Annual report pursuant to Section 13 and 15(d)

Consolidated Statements of Net and Comprehensive Income (Parenthetical)

v2.4.1.9
Consolidated Statements of Net and Comprehensive Income (Parenthetical) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Income Statement [Abstract]      
Unrealized gain on marketable securities, tax $ 16us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax $ 0us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax $ 0us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax
Foreign currency translation gain, tax $ 90us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax $ 0us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax $ 0us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax