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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Statement Of Income And Comprehensive Income [Abstract]      
Net income $ 8,661us-gaap_NetIncomeLoss $ 6,015us-gaap_NetIncomeLoss $ 34,961us-gaap_NetIncomeLoss
Other comprehensive income (loss), net of tax:      
Currency translation adjustment arising during the year     1,203us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax
Currency translation adjustment less reclassification adjustment for amount included in gain on disposal (See Note 2)     (12,693)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationReclassificationAdjustmentFromAOCIRealizedUponSaleOrLiquidationNetOfTax
Currency translation adjustment     (11,490)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
Impact from cash flow hedges, net     (4)us-gaap_OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
Total other comprehensive loss, net     (11,494)us-gaap_OtherComprehensiveIncomeLossNetOfTax
Comprehensive income $ 8,661us-gaap_ComprehensiveIncomeNetOfTax $ 6,015us-gaap_ComprehensiveIncomeNetOfTax $ 23,467us-gaap_ComprehensiveIncomeNetOfTax