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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified | Total | Preferred Stock | Common Stock | Additional Paid-In Capital | Retained Earnings | Accumulated Other Comprehensive Income (Loss) | Common Stock Held in Treasury
--- | --- | --- | --- | --- | --- | --- | ---
Balance at beginning of period (value) at Dec. 31, 2011 | $ 315,372 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | $ 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember | $ 383 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 147,649 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ 333,523 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | $ (13,463)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | $ (152,720)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Balance at beginning of period (shares) at Dec. 31, 2011 |  | 0 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember | 38,291 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  | 8,200 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Shares issued under share-based compensation (shares) |  |  | 31 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Shares issued under share-based compensation (value) | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation |  | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Exercise of stock options and warrants (shares) |  |  | 474 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Exercise of stock options and warrants (value) | 4,296 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised |  | 5 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 4,291 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Income tax benefit from exercise of stock options and warrants (value) | 5,841 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation |  |  | 5,841 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Share-based compensation expense (value) | 1,300 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue |  |  | 1,300 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Net income | 80,359 us-gaap_NetIncomeLoss |  |  |  | 80,359 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |
Currency translation adjustment, net of tax expense or benefit | 6,523 us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax |  |  |  |  | 6,523 us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Repurchases of treasury stock (shares) |  |  |  |  |  |  | 1,500 us-gaap_TreasuryStockSharesAcquired / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Repurchases of treasury stock (value) | (61,275)us-gaap_TreasuryStockValueAcquiredCostMethod |  |  |  |  |  | (61,275)us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Balance at end of period (value) at Dec. 31, 2012 | 352,416 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember | 388 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 159,081 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 413,882 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (6,940)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | (213,995)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Balance at end of period (shares) at Dec. 31, 2012 |  | 0 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember | 38,796 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  | 9,700 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Shares issued under share-based compensation (shares) |  |  | 8 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Shares issued under share-based compensation (value) | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation |  | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Exercise of stock options and warrants (shares) |  |  | 573 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Exercise of stock options and warrants (value) | 9,242 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised |  | 6 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 9,236 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Income tax benefit from exercise of stock options and warrants (value) | 7,805 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation |  |  | 7,805 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Share-based compensation expense (value) | 553 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue |  |  | 553 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Net income | 83,846 us-gaap_NetIncomeLoss |  |  |  | 83,846 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |
Currency translation adjustment, net of tax expense or benefit | (811)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax |  |  |  |  | (811)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Repurchases of treasury stock (shares) |  |  |  |  |  |  | 729 us-gaap_TreasuryStockSharesAcquired / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Repurchases of treasury stock (value) | (38,692)us-gaap_TreasuryStockValueAcquiredCostMethod |  |  |  |  |  | (38,692)us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Balance at end of period (value) at Dec. 31, 2013 | 414,359 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember | 394 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 176,675 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | 497,728 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | (7,751)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | (252,687)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Balance at end of period (shares) at Dec. 31, 2013 |  | 0 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember | 39,377 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  | 10,429 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |
Shares issued under share-based compensation (shares) |  |  | 37 us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Shares issued under share-based compensation (value) | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation |  | 0 us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Exercise of stock options and warrants (shares) |  |  | 294 us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  |
Exercise of stock options and warrants (value) | 5,270 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised |  | 3 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | 5,267 us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Income tax benefit from exercise of stock options and warrants (value) | 4,141 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation |  |  | 4,141 us-gaap_AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Share-based compensation expense (value) | 1,979 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue |  |  | 1,979 us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember |  |  |
Net income | 85,166 us-gaap_NetIncomeLoss |  |  |  | 85,166 us-gaap_NetIncomeLoss / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember |  |
Currency translation adjustment, net of tax expense or benefit | (18,417)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax |  |  |  |  | (18,417)us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember |
Repurchases of treasury stock (shares) |  |  |  |  |  |  | 771 us-gaap_TreasuryStockSharesAcquired / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Repurchases of treasury stock (value) | (43,947)us-gaap_TreasuryStockValueAcquiredCostMethod |  |  |  |  |  | (43,947)us-gaap_TreasuryStockValueAcquiredCostMethod / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Balance at end of period (value) at Dec. 31, 2014 | $ 448,551 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | $ 0 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember | $ 397 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember | $ 188,062 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AdditionalPaidInCapitalMember | $ 582,894 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_RetainedEarningsMember | $ (26,168)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_AccumulatedOtherComprehensiveIncomeMember | $ (296,634)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember
Balance at end of period (shares) at Dec. 31, 2014 |  | 0 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_PreferredStockMember | 39,708 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_CommonStockMember |  |  |  | 11,200 us-gaap_SharesIssued / us-gaap_StatementEquityComponentsAxis = us-gaap_TreasuryStockMember

X
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