Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements and Derivatives - Effects of foreign currency forward which were not designated as hedging instruments (Detail 7)

v2.4.1.9
Fair Value Measurements and Derivatives - Effects of foreign currency forward which were not designated as hedging instruments (Detail 7) (Not Designated as Hedging Instrument, Foreign currency forward contracts, USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Not Designated as Hedging Instrument | Foreign currency forward contracts
      
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (loss) recognized in other income (expense)    $ 20us-gaap_DerivativeGainOnDerivative
/ us-gaap_DerivativeInstrumentRiskAxis
= us-gaap_ForeignExchangeForwardMember
/ us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipAxis
= us-gaap_NondesignatedMember