CIK 0000788920
| Fakt | Wert | Zeit | Quelle |
|---|---|---|---|
| accounts_payable | {"amount": 5246000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2026-03-31 | sec_edgar |
| accounts_payable | {"amount": 4111000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2025-12-31 | sec_edgar |
| accounts_payable | {"amount": 3965000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2025-09-30 | sec_edgar |
| accounts_payable | {"amount": 4614000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2025-06-30 | sec_edgar |
| accounts_payable | {"amount": 5962000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2025-03-31 | sec_edgar |
| accounts_payable | {"amount": 5689000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2024-12-31 | sec_edgar |
| accounts_payable | {"amount": 4442000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2024-09-30 | sec_edgar |
| accounts_payable | {"amount": 4513000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2024-06-30 | sec_edgar |
| accounts_payable | {"amount": 3435000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2024-03-31 | sec_edgar |
| accounts_payable | {"amount": 2909000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2023-12-31 | sec_edgar |
| accounts_payable | {"amount": 2740000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2023-09-30 | sec_edgar |
| accounts_payable | {"amount": 2261000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2023-06-30 | sec_edgar |
| accounts_payable | {"amount": 3068000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2023-03-31 | sec_edgar |
| accounts_payable | {"amount": 3364000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2022-12-31 | sec_edgar |
| accounts_payable | {"amount": 3549000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2022-09-30 | sec_edgar |
| accounts_payable | {"amount": 3761000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2022-06-30 | sec_edgar |
| accounts_payable | {"amount": 3533000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2022-03-31 | sec_edgar |
| accounts_payable | {"amount": 2315000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2021-12-31 | sec_edgar |
| accounts_payable | {"amount": 2476000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2021-09-30 | sec_edgar |
| accounts_payable | {"amount": 2288000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2021-06-30 | sec_edgar |
| accounts_payable | {"amount": 2524000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2021-03-31 | sec_edgar |
| accounts_payable | {"amount": 2470000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2020-12-31 | sec_edgar |
| accounts_payable | {"amount": 1834000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2020-09-30 | sec_edgar |
| accounts_payable | {"amount": 1965000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2020-06-30 | sec_edgar |
| accounts_payable | {"amount": 1912000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2020-03-31 | sec_edgar |
| accounts_payable | {"amount": 1672000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2019-12-31 | sec_edgar |
| accounts_payable | {"amount": 1376000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2019-09-30 | sec_edgar |
| accounts_payable | {"amount": 1996000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2019-06-30 | sec_edgar |
| accounts_payable | {"amount": 1543000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2019-03-31 | sec_edgar |
| accounts_payable | {"amount": 970000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2018-12-31 | sec_edgar |
| accounts_payable | {"amount": 1197000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2018-09-30 | sec_edgar |
| accounts_payable | {"amount": 1083000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2018-06-30 | sec_edgar |
| accounts_payable | {"amount": 873000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2018-03-31 | sec_edgar |
| accounts_payable | {"amount": 923000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2017-12-31 | sec_edgar |
| accounts_payable | {"amount": 943000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2017-09-30 | sec_edgar |
| accounts_payable | {"amount": 1159000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2017-06-30 | sec_edgar |
| accounts_payable | {"amount": 946000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2017-03-31 | sec_edgar |
| accounts_payable | {"amount": 761000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2016-12-31 | sec_edgar |
| accounts_payable | {"amount": 1184000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2016-09-30 | sec_edgar |
| accounts_payable | {"amount": 841000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2016-06-30 | sec_edgar |
| accounts_payable | {"amount": 1132000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2016-03-31 | sec_edgar |
| accounts_payable | {"amount": 1286000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2015-12-31 | sec_edgar |
| accounts_payable | {"amount": 1209000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2015-09-30 | sec_edgar |
| accounts_payable | {"amount": 1867000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2015-06-30 | sec_edgar |
| accounts_payable | {"amount": 1534000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2015-03-31 | sec_edgar |
| accounts_payable | {"amount": 830000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2014-12-31 | sec_edgar |
| accounts_payable | {"amount": 617000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2014-09-30 | sec_edgar |
| accounts_payable | {"amount": 744000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2014-06-30 | sec_edgar |
| accounts_payable | {"amount": 603000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2014-03-31 | sec_edgar |
| accounts_payable | {"amount": 626000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2013-12-31 | sec_edgar |
| accounts_payable | {"amount": 482000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2013-09-30 | sec_edgar |
| accounts_payable | {"amount": 844000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2013-06-30 | sec_edgar |
| accounts_payable | {"amount": 981000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2013-03-31 | sec_edgar |
| accounts_payable | {"amount": 576000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2012-12-31 | sec_edgar |
| accounts_payable | {"amount": 1107000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2012-09-30 | sec_edgar |
| accounts_payable | {"amount": 633000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2012-06-30 | sec_edgar |
| accounts_payable | {"amount": 1029000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2012-03-31 | sec_edgar |
| accounts_payable | {"amount": 1624000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2011-12-31 | sec_edgar |
| accounts_payable | {"amount": 1163000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2011-09-30 | sec_edgar |
| accounts_payable | {"amount": 1207000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2011-06-30 | sec_edgar |
| accounts_receivable | {"amount": 19473000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2026-03-31 | sec_edgar |
| accounts_receivable | {"amount": 17883000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2025-12-31 | sec_edgar |
| accounts_receivable | {"amount": 18234000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2025-09-30 | sec_edgar |
| accounts_receivable | {"amount": 16433000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2025-06-30 | sec_edgar |
| accounts_receivable | {"amount": 15861000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2025-03-31 | sec_edgar |
| accounts_receivable | {"amount": 18467000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2024-12-31 | sec_edgar |
| accounts_receivable | {"amount": 13456000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2024-09-30 | sec_edgar |
| accounts_receivable | {"amount": 13887000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2024-06-30 | sec_edgar |
| accounts_receivable | {"amount": 12516000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2024-03-31 | sec_edgar |
| accounts_receivable | {"amount": 13169000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2023-12-31 | sec_edgar |
| accounts_receivable | {"amount": 11034000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2023-09-30 | sec_edgar |
| accounts_receivable | {"amount": 9952000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2023-06-30 | sec_edgar |
| accounts_receivable | {"amount": 10565000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2023-03-31 | sec_edgar |
| accounts_receivable | {"amount": 12195000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2022-12-31 | sec_edgar |
| accounts_receivable | {"amount": 11045000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2022-09-30 | sec_edgar |
| accounts_receivable | {"amount": 15384000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2022-06-30 | sec_edgar |
| accounts_receivable | {"amount": 8680000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2022-03-31 | sec_edgar |
| accounts_receivable | {"amount": 8850000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2021-12-31 | sec_edgar |
| accounts_receivable | {"amount": 10093000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2021-09-30 | sec_edgar |
| accounts_receivable | {"amount": 10933000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2021-06-30 | sec_edgar |
| accounts_receivable | {"amount": 11921000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2021-03-31 | sec_edgar |
| accounts_receivable | {"amount": 4621000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2020-12-31 | sec_edgar |
| accounts_receivable | {"amount": 6138000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2020-09-30 | sec_edgar |
| accounts_receivable | {"amount": 5155000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2020-06-30 | sec_edgar |
| accounts_receivable | {"amount": 4170000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2020-03-31 | sec_edgar |
| accounts_receivable | {"amount": 2683000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2019-12-31 | sec_edgar |
| accounts_receivable | {"amount": 3157000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2019-09-30 | sec_edgar |
| accounts_receivable | {"amount": 4100000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2019-06-30 | sec_edgar |
| accounts_receivable | {"amount": 3742000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2019-03-31 | sec_edgar |
| accounts_receivable | {"amount": 3807000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2018-12-31 | sec_edgar |
| accounts_receivable | {"amount": 3624000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2018-09-30 | sec_edgar |
| accounts_receivable | {"amount": 2955000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2018-06-30 | sec_edgar |
| accounts_receivable | {"amount": 3434000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2018-03-31 | sec_edgar |
| accounts_receivable | {"amount": 3150000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2017-12-31 | sec_edgar |
| accounts_receivable | {"amount": 2254000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2017-09-30 | sec_edgar |
| accounts_receivable | {"amount": 3538000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2017-06-30 | sec_edgar |
| accounts_receivable | {"amount": 3885000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2017-03-31 | sec_edgar |
| accounts_receivable | {"amount": 1026000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2016-12-31 | sec_edgar |
| accounts_receivable | {"amount": 1542000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2016-09-30 | sec_edgar |
| accounts_receivable | {"amount": 1469000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2016-06-30 | sec_edgar |
| accounts_receivable | {"amount": 2169000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2016-03-31 | sec_edgar |
| accounts_receivable | {"amount": 1831000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2015-12-31 | sec_edgar |
| accounts_receivable | {"amount": 759000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2015-09-30 | sec_edgar |
| accounts_receivable | {"amount": 2326000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2015-06-30 | sec_edgar |
| accounts_receivable | {"amount": 2099000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2015-03-31 | sec_edgar |
| accounts_receivable | {"amount": 1115000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2014-12-31 | sec_edgar |
| accounts_receivable | {"amount": 1094000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2014-09-30 | sec_edgar |
| accounts_receivable | {"amount": 1776000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2014-06-30 | sec_edgar |
| accounts_receivable | {"amount": 1102000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2014-03-31 | sec_edgar |
| accounts_receivable | {"amount": 1580000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2013-12-31 | sec_edgar |
| accounts_receivable | {"amount": 1361000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2013-09-30 | sec_edgar |
| accounts_receivable | {"amount": 1339000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2013-06-30 | sec_edgar |
| accounts_receivable | {"amount": 1577000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2013-03-31 | sec_edgar |
| accounts_receivable | {"amount": 1175000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2012-12-31 | sec_edgar |
| accounts_receivable | {"amount": 1839000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2012-09-30 | sec_edgar |
| accounts_receivable | {"amount": 1581000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2012-06-30 | sec_edgar |
| accounts_receivable | {"amount": 2228000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2012-03-31 | sec_edgar |
| accounts_receivable | {"amount": 2248000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2011-12-31 | sec_edgar |
| accounts_receivable | {"amount": 2330000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2011-09-30 | sec_edgar |
| accounts_receivable | {"amount": 3128000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2011-06-30 | sec_edgar |
| capex | {"amount": 280000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2026-03-31 | sec_edgar |
| capex | {"amount": 168000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2025-12-31 | sec_edgar |
| capex | {"amount": 98000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curren | 2025-09-30 | sec_edgar |
| capex | {"amount": 1153000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2025-03-31 | sec_edgar |
| capex | {"amount": 973000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2024-12-31 | sec_edgar |
| capex | {"amount": 431000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2024-09-30 | sec_edgar |
| capex | {"amount": 876000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2024-03-31 | sec_edgar |
| capex | {"amount": 759000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2023-12-31 | sec_edgar |
| capex | {"amount": 126000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2023-09-30 | sec_edgar |
| capex | {"amount": 822000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2023-03-31 | sec_edgar |
| capex | {"amount": 687000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2022-12-31 | sec_edgar |
| capex | {"amount": 178000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2022-09-30 | sec_edgar |
| capex | {"amount": 1638000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2022-06-30 | sec_edgar |
| capex | {"amount": 1270000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2022-03-31 | sec_edgar |
| capex | {"amount": 1072000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2021-12-31 | sec_edgar |
| capex | {"amount": 848000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2021-09-30 | sec_edgar |
| capex | {"amount": 1769000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2021-06-30 | sec_edgar |
| capex | {"amount": 316000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2020-12-31 | sec_edgar |
| capex | {"amount": 6500000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2020-11-06 | sec_edgar |
| capex | {"amount": 6500, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "currenc | 2020-11-06 | sec_edgar |
| capex | {"amount": 89000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curren | 2020-09-30 | sec_edgar |
| capex | {"amount": 519000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2020-06-30 | sec_edgar |
| capex | {"amount": 61000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curren | 2019-09-30 | sec_edgar |
| capex | {"amount": 1387000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2019-06-30 | sec_edgar |
| capex | {"amount": 477000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2018-09-30 | sec_edgar |
| capex | {"amount": 820000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2018-03-31 | sec_edgar |
| capex | {"amount": 713000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2017-12-31 | sec_edgar |
| capex | {"amount": 139000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2017-09-30 | sec_edgar |
| capex | {"amount": 552000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2017-03-31 | sec_edgar |
| capex | {"amount": 376000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2016-12-31 | sec_edgar |
| capex | {"amount": 316000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2016-09-30 | sec_edgar |
| capex | {"amount": 106000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2016-03-31 | sec_edgar |
| capex | {"amount": 21000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curren | 2015-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 6627000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2026-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 5273000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2025-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 33000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency": | 2025-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 33000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency": | 2025-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 33000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency": | 2025-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 66000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency": | 2024-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 3081000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2024-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 45000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency": | 2024-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 3219000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2024-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 1289000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2023-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 1904000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2023-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 2936000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2023-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 2088000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2023-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 382000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency": | 2022-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 2798000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2022-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 849000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency": | 2022-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 4761000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2022-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 5252000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2021-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 5177000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2021-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 3721000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2021-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 3874000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2021-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 5523000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2020-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 5202000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2020-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 6421000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2020-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 4378000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2020-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 6175000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2019-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 6502000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2019-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 7742000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2019-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 9661000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2019-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 8871000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2018-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 8315000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2018-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 5188000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2018-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 5099000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2018-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 5262000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2017-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 5855000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2017-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 4205000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2017-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 3699000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2017-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 2180000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2016-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 2168000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2016-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 2294000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2016-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 1452000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2016-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 1053000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2015-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 493000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency": | 2015-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 697000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency": | 2015-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 1475000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2015-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 1973000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2014-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 3609000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2014-09-30 | sec_edgar |