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Statements of Comprehensive Income (Loss) Statement (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Net Income (Loss) Attributable to Parent $ 1,848us-gaap_NetIncomeLoss $ (724)us-gaap_NetIncomeLoss
Available-for-sale Securities, Change in Net Unrealized Holding Gain (Loss), Net of Tax (1)us-gaap_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLossNetOfTax 3us-gaap_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLossNetOfTax
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax 447us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax (132)us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
Comprehensive Income (Loss), Net of Tax, Attributable to Parent $ 2,294us-gaap_ComprehensiveIncomeNetOfTax $ (853)us-gaap_ComprehensiveIncomeNetOfTax