CIK 0001158780
| Fakt | Wert | Zeit | Quelle |
|---|---|---|---|
| accounts_payable | {"amount": 1968000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2020-06-30 | sec_edgar |
| accounts_payable | {"amount": 1810000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2020-03-31 | sec_edgar |
| accounts_payable | {"amount": 1857000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2019-12-31 | sec_edgar |
| accounts_payable | {"amount": 2890000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2019-09-30 | sec_edgar |
| accounts_payable | {"amount": 2281000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2019-06-30 | sec_edgar |
| accounts_payable | {"amount": 2892000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2019-03-31 | sec_edgar |
| accounts_payable | {"amount": 2073000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2018-12-31 | sec_edgar |
| accounts_payable | {"amount": 2133000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2018-09-30 | sec_edgar |
| accounts_payable | {"amount": 3261000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2018-06-30 | sec_edgar |
| accounts_payable | {"amount": 1924000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2018-03-31 | sec_edgar |
| accounts_payable | {"amount": 1808000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2017-12-31 | sec_edgar |
| accounts_payable | {"amount": 1553000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2017-09-30 | sec_edgar |
| accounts_payable | {"amount": 1966000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2017-06-30 | sec_edgar |
| accounts_payable | {"amount": 1679000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2017-03-31 | sec_edgar |
| accounts_payable | {"amount": 2775000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2016-12-31 | sec_edgar |
| accounts_payable | {"amount": 2288000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2016-09-30 | sec_edgar |
| accounts_payable | {"amount": 2705000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2016-06-30 | sec_edgar |
| accounts_payable | {"amount": 1968000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2016-03-31 | sec_edgar |
| accounts_payable | {"amount": 1835000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2015-12-31 | sec_edgar |
| accounts_payable | {"amount": 1495000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2015-09-30 | sec_edgar |
| accounts_payable | {"amount": 3268000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2015-06-30 | sec_edgar |
| accounts_payable | {"amount": 2395000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2015-03-31 | sec_edgar |
| accounts_payable | {"amount": 2522000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2014-12-31 | sec_edgar |
| accounts_payable | {"amount": 2421000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2014-09-30 | sec_edgar |
| accounts_payable | {"amount": 3465000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2014-06-30 | sec_edgar |
| accounts_payable | {"amount": 2696000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2014-03-31 | sec_edgar |
| accounts_payable | {"amount": 2711000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2013-12-31 | sec_edgar |
| accounts_payable | {"amount": 2880000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2013-09-30 | sec_edgar |
| accounts_payable | {"amount": 2837000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2013-06-30 | sec_edgar |
| accounts_payable | {"amount": 2577000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2013-03-31 | sec_edgar |
| accounts_payable | {"amount": 3397, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2012-12-31 | sec_edgar |
| accounts_payable | {"amount": 1696000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2012-09-30 | sec_edgar |
| accounts_payable | {"amount": 1368, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2012-06-30 | sec_edgar |
| accounts_payable | {"amount": 1529000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2012-03-31 | sec_edgar |
| accounts_payable | {"amount": 1174000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2011-12-31 | sec_edgar |
| accounts_payable | {"amount": 1076000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2011-09-30 | sec_edgar |
| accounts_payable | {"amount": 1177000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2011-06-30 | sec_edgar |
| accounts_receivable | {"amount": 3000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2022-06-30 | sec_edgar |
| accounts_receivable | {"amount": 19000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2021-06-30 | sec_edgar |
| accounts_receivable | {"amount": 285000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2019-03-31 | sec_edgar |
| accounts_receivable | {"amount": 82000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2018-12-31 | sec_edgar |
| accounts_receivable | {"amount": 37000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2018-09-30 | sec_edgar |
| accounts_receivable | {"amount": 58000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2018-06-30 | sec_edgar |
| accounts_receivable | {"amount": 596000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2018-03-31 | sec_edgar |
| accounts_receivable | {"amount": 172000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2017-12-31 | sec_edgar |
| accounts_receivable | {"amount": 25000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2017-09-30 | sec_edgar |
| accounts_receivable | {"amount": 1036000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2017-06-30 | sec_edgar |
| accounts_receivable | {"amount": 318000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2017-03-31 | sec_edgar |
| accounts_receivable | {"amount": 287000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2016-12-31 | sec_edgar |
| accounts_receivable | {"amount": 459000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2016-09-30 | sec_edgar |
| accounts_receivable | {"amount": 2228000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2016-06-30 | sec_edgar |
| accounts_receivable | {"amount": 180000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2016-03-31 | sec_edgar |
| accounts_receivable | {"amount": 150000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2015-12-31 | sec_edgar |
| accounts_receivable | {"amount": 419000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2015-09-30 | sec_edgar |
| accounts_receivable | {"amount": 1691000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2015-06-30 | sec_edgar |
| accounts_receivable | {"amount": 204000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2015-03-31 | sec_edgar |
| accounts_receivable | {"amount": 158000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2014-12-31 | sec_edgar |
| accounts_receivable | {"amount": 451000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2014-09-30 | sec_edgar |
| accounts_receivable | {"amount": 2263000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2014-06-30 | sec_edgar |
| accounts_receivable | {"amount": 273000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2013-06-30 | sec_edgar |
| capex | {"amount": 607000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2026-03-31 | sec_edgar |
| capex | {"amount": 563000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2025-12-31 | sec_edgar |
| capex | {"amount": 116000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2025-09-30 | sec_edgar |
| capex | {"amount": 1618000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2025-06-30 | sec_edgar |
| capex | {"amount": 897000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2025-03-31 | sec_edgar |
| capex | {"amount": 320000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2024-12-31 | sec_edgar |
| capex | {"amount": 208000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2024-09-30 | sec_edgar |
| capex | {"amount": 323000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2024-06-30 | sec_edgar |
| capex | {"amount": 313000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2024-03-31 | sec_edgar |
| capex | {"amount": 224000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2023-12-31 | sec_edgar |
| capex | {"amount": 103000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2023-09-30 | sec_edgar |
| capex | {"amount": 262000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2023-06-30 | sec_edgar |
| capex | {"amount": 165000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2023-03-31 | sec_edgar |
| capex | {"amount": 141000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2022-12-31 | sec_edgar |
| capex | {"amount": 73000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curren | 2022-09-30 | sec_edgar |
| capex | {"amount": 280000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2022-06-30 | sec_edgar |
| capex | {"amount": 81000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curren | 2022-03-31 | sec_edgar |
| capex | {"amount": 44000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curren | 2021-12-31 | sec_edgar |
| capex | {"amount": 15000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curren | 2021-09-30 | sec_edgar |
| capex | {"amount": 373000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2021-06-30 | sec_edgar |
| capex | {"amount": 331000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2021-03-31 | sec_edgar |
| capex | {"amount": 207000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2020-12-31 | sec_edgar |
| capex | {"amount": 77000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curren | 2020-09-30 | sec_edgar |
| capex | {"amount": 270000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2020-06-30 | sec_edgar |
| capex | {"amount": 157000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2020-03-31 | sec_edgar |
| capex | {"amount": 128000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2019-12-31 | sec_edgar |
| capex | {"amount": 54000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curren | 2019-09-30 | sec_edgar |
| capex | {"amount": 239000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2019-06-30 | sec_edgar |
| capex | {"amount": 217000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2019-03-31 | sec_edgar |
| capex | {"amount": 193000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2018-12-31 | sec_edgar |
| capex | {"amount": 177000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2018-09-30 | sec_edgar |
| capex | {"amount": 342000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2018-06-30 | sec_edgar |
| capex | {"amount": 219000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2018-03-31 | sec_edgar |
| capex | {"amount": 185000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2017-12-31 | sec_edgar |
| capex | {"amount": 148000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2017-09-30 | sec_edgar |
| capex | {"amount": 378000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2017-06-30 | sec_edgar |
| capex | {"amount": 360000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2017-03-31 | sec_edgar |
| capex | {"amount": 273000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2016-12-31 | sec_edgar |
| capex | {"amount": 145000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2016-09-30 | sec_edgar |
| capex | {"amount": 1750000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2016-06-30 | sec_edgar |
| capex | {"amount": 1535000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2016-03-31 | sec_edgar |
| capex | {"amount": 1471000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2015-12-31 | sec_edgar |
| capex | {"amount": 1106000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2015-09-30 | sec_edgar |
| capex | {"amount": 831000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2015-06-30 | sec_edgar |
| capex | {"amount": 638000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2015-03-31 | sec_edgar |
| capex | {"amount": 552000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2014-12-31 | sec_edgar |
| capex | {"amount": 271000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2014-09-30 | sec_edgar |
| capex | {"amount": 1573000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2014-06-30 | sec_edgar |
| capex | {"amount": 1436000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2014-03-31 | sec_edgar |
| capex | {"amount": 1169000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2013-12-31 | sec_edgar |
| capex | {"amount": 462000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2013-09-30 | sec_edgar |
| capex | {"amount": 4309000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2013-06-30 | sec_edgar |
| capex | {"amount": 3247000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2013-03-31 | sec_edgar |
| capex | {"amount": 3338000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2012-12-31 | sec_edgar |
| capex | {"amount": 1978000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2012-09-30 | sec_edgar |
| capex | {"amount": 1480000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2012-06-30 | sec_edgar |
| capex | {"amount": 1313000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2012-03-31 | sec_edgar |
| capex | {"amount": 996, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "currency | 2011-12-31 | sec_edgar |
| capex | {"amount": 179000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2011-09-30 | sec_edgar |
| capex | {"amount": 962000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2011-06-30 | sec_edgar |
| capex | {"amount": 672000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2011-03-31 | sec_edgar |
| capex | {"amount": 560000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2010-12-31 | sec_edgar |
| capex | {"amount": 426000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2010-09-30 | sec_edgar |
| capex | {"amount": 389000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2010-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 3419000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2026-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 4690000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2025-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 4259000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2025-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 5895000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2025-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 8499000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2025-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 7229000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2024-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 3198000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2024-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 6783000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2024-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 7081000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2024-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 5468000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2023-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 5253000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2023-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 5360000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2023-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 3677000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2023-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 8818000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2022-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 8744000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2022-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 9772000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2022-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 23791000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2022-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 18715000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2021-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 14611000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2021-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 31241000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2021-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 12265000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2021-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 7824000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2020-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 6625000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2020-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 8270000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2020-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 6762000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2020-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 7300000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2019-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 3715000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2019-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 4106000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2019-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 9535000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2019-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 6796000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2018-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 8433000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2018-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 8821000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2018-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 5940000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2018-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 8581000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2017-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 12294000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2017-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 4707000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2017-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 5319000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2017-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 7334000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2016-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 6098000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2016-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 6223000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2016-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 5404000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2016-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 4948000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2015-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 10805000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2015-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 22626000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2015-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 8944000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2015-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 6961000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2014-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 5662000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2014-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 4493000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2014-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 3638000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2014-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 4626000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2013-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 8603000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2013-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 9007000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2013-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 27821000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2013-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 23548000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2012-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 38751000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2012-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 9389, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency": " | 2012-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 11605000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2012-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 6672, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency": " | 2011-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 13633000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2011-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 42829, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency": | 2011-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 44866000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2011-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 4739000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2010-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 1127000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2010-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 1583000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2010-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 2339000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency" | 2009-06-30 | sec_edgar |
| cash_and_restricted_cash | {"amount": 4592000, "concept": "us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCash | 2026-03-31 | sec_edgar |
| cash_and_restricted_cash | {"amount": 5853000, "concept": "us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCash | 2025-12-31 | sec_edgar |
| cash_and_restricted_cash | {"amount": 5596000, "concept": "us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCash | 2025-09-30 | sec_edgar |
| cash_and_restricted_cash | {"amount": 7196000, "concept": "us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCash | 2025-06-30 | sec_edgar |
| cash_and_restricted_cash | {"amount": 9692000, "concept": "us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCash | 2025-03-31 | sec_edgar |
| cash_and_restricted_cash | {"amount": 8290000, "concept": "us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCash | 2024-12-31 | sec_edgar |
| cash_and_restricted_cash | {"amount": 4216000, "concept": "us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCash | 2024-09-30 | sec_edgar |
| cash_and_restricted_cash | {"amount": 7671000, "concept": "us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCash | 2024-06-30 | sec_edgar |
| cash_and_restricted_cash | {"amount": 7991000, "concept": "us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCash | 2024-03-31 | sec_edgar |
| cash_and_restricted_cash | {"amount": 6486000, "concept": "us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCash | 2023-12-31 | sec_edgar |
| cash_and_restricted_cash | {"amount": 6159000, "concept": "us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCash | 2023-09-30 | sec_edgar |