Organization record
VOLTERRA SEMICONDUCTOR CORP
All evidence-backed facts for this organization, identity resolved across official registers.
Facts on record
Newest first; every row links to its evidence page.
| Fact | Value | Period | Source |
|---|---|---|---|
| accounts_payable | {"amount": 9054000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2013-06-30 | sec_edgar |
| accounts_payable | {"amount": 5793000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2013-03-31 | sec_edgar |
| accounts_payable | {"amount": 7073000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2012-12-31 | sec_edgar |
| accounts_payable | {"amount": 6522000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2012-09-30 | sec_edgar |
| accounts_payable | {"amount": 6879000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2012-06-30 | sec_edgar |
| accounts_payable | {"amount": 6284000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2012-03-31 | sec_edgar |
| accounts_payable | {"amount": 5643000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2011-12-31 | sec_edgar |
| accounts_payable | {"amount": 4692000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2011-09-30 | sec_edgar |
| accounts_payable | {"amount": 7285000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2011-06-30 | sec_edgar |
| accounts_payable | {"amount": 4107000, "concept": "us-gaap:AccountsPayableCurrent", "currency": "USD"} | 2010-12-31 | sec_edgar |
| accounts_receivable | {"amount": 21944000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2013-06-30 | sec_edgar |
| accounts_receivable | {"amount": 21578000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2013-03-31 | sec_edgar |
| accounts_receivable | {"amount": 24487000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2012-12-31 | sec_edgar |
| accounts_receivable | {"amount": 24329000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2012-09-30 | sec_edgar |
| accounts_receivable | {"amount": 25726000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2012-06-30 | sec_edgar |
| accounts_receivable | {"amount": 23228000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2012-03-31 | sec_edgar |
| accounts_receivable | {"amount": 22399000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2011-12-31 | sec_edgar |
| accounts_receivable | {"amount": 21166000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2011-09-30 | sec_edgar |
| accounts_receivable | {"amount": 22531000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2011-06-30 | sec_edgar |
| accounts_receivable | {"amount": 19437000, "concept": "us-gaap:AccountsReceivableNetCurrent", "currency": "USD"} | 2010-12-31 | sec_edgar |
| capex | {"amount": 2493000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2013-06-30 | sec_edgar |
| capex | {"amount": 966000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2013-03-31 | sec_edgar |
| capex | {"amount": 6577000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2012-12-31 | sec_edgar |
| capex | {"amount": 4875000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2012-09-30 | sec_edgar |
| capex | {"amount": 2436000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2012-06-30 | sec_edgar |
| capex | {"amount": 422000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2012-03-31 | sec_edgar |
| capex | {"amount": 3972000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2011-12-31 | sec_edgar |
| capex | {"amount": 3198000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2011-09-30 | sec_edgar |
| capex | {"amount": 1583000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2011-06-30 | sec_edgar |
| capex | {"amount": 800000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curre | 2011-03-31 | sec_edgar |
| capex | {"amount": 6111000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2010-12-31 | sec_edgar |
| capex | {"amount": 5586000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2010-09-30 | sec_edgar |
| capex | {"amount": 4520000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2010-06-30 | sec_edgar |
| capex | {"amount": 1361000, "concept": "us-gaap:PaymentsToAcquirePropertyPlantAndEquipment", "curr | 2009-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 153988000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currenc | 2013-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 149382000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currenc | 2013-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 148364000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currenc | 2012-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 140683000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currenc | 2012-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 144792000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currenc | 2012-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 140078000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currenc | 2012-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 126733000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currenc | 2011-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 111853000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currenc | 2011-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 104824000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currenc | 2011-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 89592000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2011-03-31 | sec_edgar |
| cash_and_equivalents | {"amount": 86931000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2010-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 84132000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2010-09-30 | sec_edgar |
| cash_and_equivalents | {"amount": 80094000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2010-06-30 | sec_edgar |
| cash_and_equivalents | {"amount": 69227000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2009-12-31 | sec_edgar |
| cash_and_equivalents | {"amount": 46893000, "concept": "us-gaap:CashAndCashEquivalentsAtCarryingValue", "currency | 2008-12-31 | sec_edgar |
| cashflow_financing | {"amount": -2804000, "concept": "us-gaap:NetCashProvidedByUsedInFinancingActivities", "cur | 2013-06-30 | sec_edgar |
| cashflow_financing | {"amount": -1235000, "concept": "us-gaap:NetCashProvidedByUsedInFinancingActivities", "cur | 2013-03-31 | sec_edgar |
| cashflow_financing | {"amount": -2915000, "concept": "us-gaap:NetCashProvidedByUsedInFinancingActivities", "cur | 2012-12-31 | sec_edgar |
| cashflow_financing | {"amount": -2137000, "concept": "us-gaap:NetCashProvidedByUsedInFinancingActivities", "cur | 2012-09-30 | sec_edgar |
| cashflow_financing | {"amount": 6963000, "concept": "us-gaap:NetCashProvidedByUsedInFinancingActivities", "curr | 2012-06-30 | sec_edgar |
| cashflow_financing | {"amount": 5619000, "concept": "us-gaap:NetCashProvidedByUsedInFinancingActivities", "curr | 2012-03-31 | sec_edgar |
| cashflow_financing | {"amount": 1887000, "concept": "us-gaap:NetCashProvidedByUsedInFinancingActivities", "curr | 2011-12-31 | sec_edgar |
| cashflow_financing | {"amount": 1049000, "concept": "us-gaap:NetCashProvidedByUsedInFinancingActivities", "curr | 2011-09-30 | sec_edgar |
| cashflow_financing | {"amount": 4308000, "concept": "us-gaap:NetCashProvidedByUsedInFinancingActivities", "curr | 2011-06-30 | sec_edgar |
| cashflow_financing | {"amount": 1879000, "concept": "us-gaap:NetCashProvidedByUsedInFinancingActivities", "curr | 2011-03-31 | sec_edgar |
| cashflow_financing | {"amount": 1500000, "concept": "us-gaap:NetCashProvidedByUsedInFinancingActivities", "curr | 2010-12-31 | sec_edgar |
| cashflow_financing | {"amount": 3318000, "concept": "us-gaap:NetCashProvidedByUsedInFinancingActivities", "curr | 2010-09-30 | sec_edgar |
| cashflow_financing | {"amount": 6379000, "concept": "us-gaap:NetCashProvidedByUsedInFinancingActivities", "curr | 2010-06-30 | sec_edgar |
| cashflow_financing | {"amount": -492000, "concept": "us-gaap:NetCashProvidedByUsedInFinancingActivities", "curr | 2009-12-31 | sec_edgar |
| cashflow_investing | {"amount": -5354000, "concept": "us-gaap:NetCashProvidedByUsedInInvestingActivities", "cur | 2013-06-30 | sec_edgar |
| cashflow_investing | {"amount": -5827000, "concept": "us-gaap:NetCashProvidedByUsedInInvestingActivities", "cur | 2013-03-31 | sec_edgar |
| cashflow_investing | {"amount": -9215000, "concept": "us-gaap:NetCashProvidedByUsedInInvestingActivities", "cur | 2012-12-31 | sec_edgar |
| cashflow_investing | {"amount": -6875000, "concept": "us-gaap:NetCashProvidedByUsedInInvestingActivities", "cur | 2012-09-30 | sec_edgar |
| cashflow_investing | {"amount": -4436000, "concept": "us-gaap:NetCashProvidedByUsedInInvestingActivities", "cur | 2012-06-30 | sec_edgar |
| cashflow_investing | {"amount": -2422000, "concept": "us-gaap:NetCashProvidedByUsedInInvestingActivities", "cur | 2012-03-31 | sec_edgar |
| cashflow_investing | {"amount": 8928000, "concept": "us-gaap:NetCashProvidedByUsedInInvestingActivities", "curr | 2011-12-31 | sec_edgar |
| cashflow_investing | {"amount": 4702000, "concept": "us-gaap:NetCashProvidedByUsedInInvestingActivities", "curr | 2011-09-30 | sec_edgar |
| cashflow_investing | {"amount": 2317000, "concept": "us-gaap:NetCashProvidedByUsedInInvestingActivities", "curr | 2011-06-30 | sec_edgar |
| cashflow_investing | {"amount": -3897000, "concept": "us-gaap:NetCashProvidedByUsedInInvestingActivities", "cur | 2011-03-31 | sec_edgar |
| cashflow_investing | {"amount": -14451000, "concept": "us-gaap:NetCashProvidedByUsedInInvestingActivities", "cu | 2010-12-31 | sec_edgar |
| cashflow_investing | {"amount": -13828000, "concept": "us-gaap:NetCashProvidedByUsedInInvestingActivities", "cu | 2010-09-30 | sec_edgar |
| cashflow_investing | {"amount": -11664000, "concept": "us-gaap:NetCashProvidedByUsedInInvestingActivities", "cu | 2010-06-30 | sec_edgar |
| cashflow_investing | {"amount": 4594000, "concept": "us-gaap:NetCashProvidedByUsedInInvestingActivities", "curr | 2009-12-31 | sec_edgar |
| cashflow_operating | {"amount": 13782000, "concept": "us-gaap:NetCashProvidedByUsedInOperatingActivities", "cur | 2013-06-30 | sec_edgar |
| cashflow_operating | {"amount": 8080000, "concept": "us-gaap:NetCashProvidedByUsedInOperatingActivities", "curr | 2013-03-31 | sec_edgar |
| cashflow_operating | {"amount": 33761000, "concept": "us-gaap:NetCashProvidedByUsedInOperatingActivities", "cur | 2012-12-31 | sec_edgar |
| cashflow_operating | {"amount": 22962000, "concept": "us-gaap:NetCashProvidedByUsedInOperatingActivities", "cur | 2012-09-30 | sec_edgar |
| cashflow_operating | {"amount": 15532000, "concept": "us-gaap:NetCashProvidedByUsedInOperatingActivities", "cur | 2012-06-30 | sec_edgar |
| cashflow_operating | {"amount": 10148000, "concept": "us-gaap:NetCashProvidedByUsedInOperatingActivities", "cur | 2012-03-31 | sec_edgar |
| cashflow_operating | {"amount": 28987000, "concept": "us-gaap:NetCashProvidedByUsedInOperatingActivities", "cur | 2011-12-31 | sec_edgar |
| cashflow_operating | {"amount": 19171000, "concept": "us-gaap:NetCashProvidedByUsedInOperatingActivities", "cur | 2011-09-30 | sec_edgar |
| cashflow_operating | {"amount": 11268000, "concept": "us-gaap:NetCashProvidedByUsedInOperatingActivities", "cur | 2011-06-30 | sec_edgar |
| cashflow_operating | {"amount": 4679000, "concept": "us-gaap:NetCashProvidedByUsedInOperatingActivities", "curr | 2011-03-31 | sec_edgar |
| cashflow_operating | {"amount": 30655000, "concept": "us-gaap:NetCashProvidedByUsedInOperatingActivities", "cur | 2010-12-31 | sec_edgar |
| cashflow_operating | {"amount": 25415000, "concept": "us-gaap:NetCashProvidedByUsedInOperatingActivities", "cur | 2010-09-30 | sec_edgar |
| cashflow_operating | {"amount": 16152000, "concept": "us-gaap:NetCashProvidedByUsedInOperatingActivities", "cur | 2010-06-30 | sec_edgar |
| cashflow_operating | {"amount": 18232000, "concept": "us-gaap:NetCashProvidedByUsedInOperatingActivities", "cur | 2009-12-31 | sec_edgar |
| common_shares_issued | {"unit": "shares", "value": 29091000, "concept": "us-gaap:CommonStockSharesIssued"} | 2013-06-30 | sec_edgar |
| common_shares_issued | {"unit": "shares", "value": 28859000, "concept": "us-gaap:CommonStockSharesIssued"} | 2013-03-31 | sec_edgar |
| common_shares_issued | {"unit": "shares", "value": 28793000, "concept": "us-gaap:CommonStockSharesIssued"} | 2012-12-31 | sec_edgar |
| common_shares_issued | {"unit": "shares", "value": 28690000, "concept": "us-gaap:CommonStockSharesIssued"} | 2012-09-30 | sec_edgar |
| common_shares_issued | {"unit": "shares", "value": 28577000, "concept": "us-gaap:CommonStockSharesIssued"} | 2012-06-30 | sec_edgar |
| common_shares_issued | {"unit": "shares", "value": 28416000, "concept": "us-gaap:CommonStockSharesIssued"} | 2012-03-31 | sec_edgar |
| common_shares_issued | {"unit": "shares", "value": 27847000, "concept": "us-gaap:CommonStockSharesIssued"} | 2011-12-31 | sec_edgar |
| common_shares_issued | {"unit": "shares", "value": 27590000, "concept": "us-gaap:CommonStockSharesIssued"} | 2011-09-30 | sec_edgar |
| common_shares_issued | {"unit": "shares", "value": 27425000, "concept": "us-gaap:CommonStockSharesIssued"} | 2011-06-30 | sec_edgar |
| common_shares_issued | {"unit": "shares", "value": 27038000, "concept": "us-gaap:CommonStockSharesIssued"} | 2010-12-31 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 25103644, "concept": "dei:EntityCommonStockSharesOutstanding"} | 2013-07-31 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 25050000, "concept": "us-gaap:CommonStockSharesOutstanding"} | 2013-06-30 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 25012292, "concept": "dei:EntityCommonStockSharesOutstanding"} | 2013-04-26 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 25090000, "concept": "us-gaap:CommonStockSharesOutstanding"} | 2013-03-31 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 25165558, "concept": "dei:EntityCommonStockSharesOutstanding"} | 2013-01-31 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 25152000, "concept": "us-gaap:CommonStockSharesOutstanding"} | 2012-12-31 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 25052967, "concept": "dei:EntityCommonStockSharesOutstanding"} | 2012-10-23 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 25143000, "concept": "us-gaap:CommonStockSharesOutstanding"} | 2012-09-30 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 25460920, "concept": "dei:EntityCommonStockSharesOutstanding"} | 2012-07-24 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 25467000, "concept": "us-gaap:CommonStockSharesOutstanding"} | 2012-06-30 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 25365169, "concept": "dei:EntityCommonStockSharesOutstanding"} | 2012-04-24 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 25340000, "concept": "us-gaap:CommonStockSharesOutstanding"} | 2012-03-31 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 25072011, "concept": "dei:EntityCommonStockSharesOutstanding"} | 2012-01-31 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 24804000, "concept": "us-gaap:CommonStockSharesOutstanding"} | 2011-12-31 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 24584207, "concept": "dei:EntityCommonStockSharesOutstanding"} | 2011-10-25 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 24687000, "concept": "us-gaap:CommonStockSharesOutstanding"} | 2011-09-30 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 24806749, "concept": "dei:EntityCommonStockSharesOutstanding"} | 2011-07-26 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 24770000, "concept": "us-gaap:CommonStockSharesOutstanding"} | 2011-06-30 | sec_edgar |
| common_shares_outstanding | {"unit": "shares", "value": 24383000, "concept": "us-gaap:CommonStockSharesOutstanding"} | 2010-12-31 | sec_edgar |
| cost_of_revenue | {"amount": 14403000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2013-06-30 | sec_edgar |
| cost_of_revenue | {"amount": 31626000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2013-06-30 | sec_edgar |
| cost_of_revenue | {"amount": 17223000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2013-03-31 | sec_edgar |
| cost_of_revenue | {"amount": 71064000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2012-12-31 | sec_edgar |
| cost_of_revenue | {"amount": 53871000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2012-09-30 | sec_edgar |
| cost_of_revenue | {"amount": 17683000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2012-09-30 | sec_edgar |
| cost_of_revenue | {"amount": 36188000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2012-06-30 | sec_edgar |
| cost_of_revenue | {"amount": 18292000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2012-06-30 | sec_edgar |
| cost_of_revenue | {"amount": 17896000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2012-03-31 | sec_edgar |
| cost_of_revenue | {"amount": 66468000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2011-12-31 | sec_edgar |
| cost_of_revenue | {"amount": 17776000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2011-09-30 | sec_edgar |
| cost_of_revenue | {"amount": 50303000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2011-09-30 | sec_edgar |
| cost_of_revenue | {"amount": 18048000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2011-06-30 | sec_edgar |
| cost_of_revenue | {"amount": 32527000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2011-06-30 | sec_edgar |
| cost_of_revenue | {"amount": 14479000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2011-03-31 | sec_edgar |
| cost_of_revenue | {"amount": 59185000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2010-12-31 | sec_edgar |
| cost_of_revenue | {"amount": 16053000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2010-09-30 | sec_edgar |
| cost_of_revenue | {"amount": 44923000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2010-09-30 | sec_edgar |
| cost_of_revenue | {"amount": 28870000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2010-06-30 | sec_edgar |
| cost_of_revenue | {"amount": 14888000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2010-06-30 | sec_edgar |
| cost_of_revenue | {"amount": 42250000, "concept": "us-gaap:CostOfRevenue", "currency": "USD"} | 2009-12-31 | sec_edgar |
| current_assets | {"amount": 200384000, "concept": "us-gaap:AssetsCurrent", "currency": "USD"} | 2013-06-30 | sec_edgar |
| current_assets | {"amount": 194843000, "concept": "us-gaap:AssetsCurrent", "currency": "USD"} | 2013-03-31 | sec_edgar |
| current_assets | {"amount": 196673000, "concept": "us-gaap:AssetsCurrent", "currency": "USD"} | 2012-12-31 | sec_edgar |
| current_assets | {"amount": 190377000, "concept": "us-gaap:AssetsCurrent", "currency": "USD"} | 2012-09-30 | sec_edgar |
| current_assets | {"amount": 192208000, "concept": "us-gaap:AssetsCurrent", "currency": "USD"} | 2012-06-30 | sec_edgar |
| current_assets | {"amount": 181949000, "concept": "us-gaap:AssetsCurrent", "currency": "USD"} | 2012-03-31 | sec_edgar |
| current_assets | {"amount": 166752000, "concept": "us-gaap:AssetsCurrent", "currency": "USD"} | 2011-12-31 | sec_edgar |
| current_assets | {"amount": 156408000, "concept": "us-gaap:AssetsCurrent", "currency": "USD"} | 2011-09-30 | sec_edgar |
| current_assets | {"amount": 154826000, "concept": "us-gaap:AssetsCurrent", "currency": "USD"} | 2011-06-30 | sec_edgar |
| current_assets | {"amount": 137348000, "concept": "us-gaap:AssetsCurrent", "currency": "USD"} | 2010-12-31 | sec_edgar |
| current_liabilities | {"amount": 18948000, "concept": "us-gaap:LiabilitiesCurrent", "currency": "USD"} | 2013-06-30 | sec_edgar |
| current_liabilities | {"amount": 15059000, "concept": "us-gaap:LiabilitiesCurrent", "currency": "USD"} | 2013-03-31 | sec_edgar |
| current_liabilities | {"amount": 21047000, "concept": "us-gaap:LiabilitiesCurrent", "currency": "USD"} | 2012-12-31 | sec_edgar |
| current_liabilities | {"amount": 16021000, "concept": "us-gaap:LiabilitiesCurrent", "currency": "USD"} | 2012-09-30 | sec_edgar |
| current_liabilities | {"amount": 16697000, "concept": "us-gaap:LiabilitiesCurrent", "currency": "USD"} | 2012-06-30 | sec_edgar |
| current_liabilities | {"amount": 14912000, "concept": "us-gaap:LiabilitiesCurrent", "currency": "USD"} | 2012-03-31 | sec_edgar |
| current_liabilities | {"amount": 13942000, "concept": "us-gaap:LiabilitiesCurrent", "currency": "USD"} | 2011-12-31 | sec_edgar |
| current_liabilities | {"amount": 13562000, "concept": "us-gaap:LiabilitiesCurrent", "currency": "USD"} | 2011-09-30 | sec_edgar |
| current_liabilities | {"amount": 17376000, "concept": "us-gaap:LiabilitiesCurrent", "currency": "USD"} | 2011-06-30 | sec_edgar |
| current_liabilities | {"amount": 15323000, "concept": "us-gaap:LiabilitiesCurrent", "currency": "USD"} | 2010-12-31 | sec_edgar |
| dei:EntityCommonStockSharesOutstanding | {"unit": "shares", "value": 25103644} | 2013-07-31 | sec_edgar |
| dei:EntityCommonStockSharesOutstanding | {"unit": "shares", "value": 25012292} | 2013-04-26 | sec_edgar |
| dei:EntityCommonStockSharesOutstanding | {"unit": "shares", "value": 25165558} | 2013-01-31 | sec_edgar |
| dei:EntityCommonStockSharesOutstanding | {"unit": "shares", "value": 25052967} | 2012-10-23 | sec_edgar |
| dei:EntityCommonStockSharesOutstanding | {"unit": "shares", "value": 25460920} | 2012-07-24 | sec_edgar |
| dei:EntityCommonStockSharesOutstanding | {"unit": "shares", "value": 25365169} | 2012-04-24 | sec_edgar |
| dei:EntityCommonStockSharesOutstanding | {"unit": "shares", "value": 25072011} | 2012-01-31 | sec_edgar |
| dei:EntityCommonStockSharesOutstanding | {"unit": "shares", "value": 24584207} | 2011-10-25 | sec_edgar |
| dei:EntityCommonStockSharesOutstanding | {"unit": "shares", "value": 24806749} | 2011-07-26 | sec_edgar |
| dei:EntityPublicFloat | {"amount": 427402350, "currency": "USD"} | 2012-06-29 | sec_edgar |
| dei:EntityPublicFloat | {"amount": 410305139, "currency": "USD"} | 2011-06-30 | sec_edgar |
| depreciation_amortization | {"amount": 1869000, "concept": "us-gaap:DepreciationDepletionAndAmortization", "currency": | 2013-06-30 | sec_edgar |
| depreciation_amortization | {"amount": 922000, "concept": "us-gaap:DepreciationDepletionAndAmortization", "currency": | 2013-03-31 | sec_edgar |
| depreciation_amortization | {"amount": 3364000, "concept": "us-gaap:DepreciationDepletionAndAmortization", "currency": | 2012-12-31 | sec_edgar |
| depreciation_amortization | {"amount": 2430000, "concept": "us-gaap:DepreciationDepletionAndAmortization", "currency": | 2012-09-30 | sec_edgar |
| depreciation_amortization | {"amount": 1544000, "concept": "us-gaap:DepreciationDepletionAndAmortization", "currency": | 2012-06-30 | sec_edgar |
| depreciation_amortization | {"amount": 757000, "concept": "us-gaap:DepreciationDepletionAndAmortization", "currency": | 2012-03-31 | sec_edgar |
| depreciation_amortization | {"amount": 2851000, "concept": "us-gaap:DepreciationDepletionAndAmortization", "currency": | 2011-12-31 | sec_edgar |
| depreciation_amortization | {"amount": 2059000, "concept": "us-gaap:DepreciationDepletionAndAmortization", "currency": | 2011-09-30 | sec_edgar |
| depreciation_amortization | {"amount": 1335000, "concept": "us-gaap:DepreciationDepletionAndAmortization", "currency": | 2011-06-30 | sec_edgar |
| depreciation_amortization | {"amount": 632000, "concept": "us-gaap:DepreciationDepletionAndAmortization", "currency": | 2011-03-31 | sec_edgar |
| depreciation_amortization | {"amount": 2129000, "concept": "us-gaap:DepreciationDepletionAndAmortization", "currency": | 2010-12-31 | sec_edgar |
| depreciation_amortization | {"amount": 1511000, "concept": "us-gaap:DepreciationDepletionAndAmortization", "currency": | 2010-09-30 | sec_edgar |
| depreciation_amortization | {"amount": 938000, "concept": "us-gaap:DepreciationDepletionAndAmortization", "currency": | 2010-06-30 | sec_edgar |
| depreciation_amortization | {"amount": 1774000, "concept": "us-gaap:DepreciationDepletionAndAmortization", "currency": | 2009-12-31 | sec_edgar |
| eps_basic | {"per": "shares", "amount": 0.03, "concept": "us-gaap:EarningsPerShareBasic", "currency": | 2013-06-30 | sec_edgar |
| eps_basic | {"per": "shares", "amount": 0.15, "concept": "us-gaap:EarningsPerShareBasic", "currency": | 2013-06-30 | sec_edgar |
| eps_basic | {"per": "shares", "amount": 0.12, "concept": "us-gaap:EarningsPerShareBasic", "currency": | 2013-03-31 | sec_edgar |
| eps_basic | {"per": "shares", "amount": 0.9, "concept": "us-gaap:EarningsPerShareBasic", "currency": " | 2012-12-31 | sec_edgar |
| eps_basic | {"per": "shares", "amount": 0.18, "concept": "us-gaap:EarningsPerShareBasic", "currency": | 2012-12-31 | sec_edgar |
| eps_basic | {"per": "shares", "amount": 0.72, "concept": "us-gaap:EarningsPerShareBasic", "currency": | 2012-09-30 | sec_edgar |
| eps_basic | {"per": "shares", "amount": 0.24, "concept": "us-gaap:EarningsPerShareBasic", "currency": | 2012-09-30 | sec_edgar |
| eps_basic | {"per": "shares", "amount": 0.48, "concept": "us-gaap:EarningsPerShareBasic", "currency": | 2012-06-30 | sec_edgar |
| eps_basic | {"per": "shares", "amount": 0.24, "concept": "us-gaap:EarningsPerShareBasic", "currency": | 2012-06-30 | sec_edgar |
| eps_basic | {"per": "shares", "amount": 0.25, "concept": "us-gaap:EarningsPerShareBasic", "currency": | 2012-03-31 | sec_edgar |
| eps_basic | {"per": "shares", "amount": 0.23, "concept": "us-gaap:EarningsPerShareBasic", "currency": | 2011-12-31 | sec_edgar |
| eps_basic | {"per": "shares", "amount": 0.84, "concept": "us-gaap:EarningsPerShareBasic", "currency": | 2011-12-31 | sec_edgar |
| eps_basic | {"per": "shares", "amount": 0.61, "concept": "us-gaap:EarningsPerShareBasic", "currency": | 2011-09-30 | sec_edgar |
| eps_basic | {"per": "shares", "amount": 0.28, "concept": "us-gaap:EarningsPerShareBasic", "currency": | 2011-09-30 | sec_edgar |