Basis of Presentation - Summary of Accumulated Other Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Foreign currency translation adjustments, Before Tax Amount	$ 537	$ (451)
Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax	273	(2,032)
Foreign currency translation adjustments, Net of Tax	810	(2,483)
Unrealized holding gain arising during period, Before-Tax Amount	(18)	8
Unrealized holding gain arising during period, Tax (Expense) or Benefit	6	(3)
Unrealized holding gain arising during period, Net-of-tax Amount	(12)	5
Less: Reclassification adjustments for (gain) loss included in net income, Before-Tax Amount	61	54
Less: Reclassification adjustments for (gain) loss included in net income, Tax (Expense) or Benefit	(22)	(19)
Less: Reclassification adjustments for (gain) loss included in net income, Net-of-Tax Amount	39	35
Net unrealized gain (loss) on cash flow hedging instruments, Before-Tax Amount	30	183
Net unrealized gain (loss) on cash flow hedging instruments, Tax (Expense) or Benefit	(10)	(64)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	20	119
Other Comprehensive Income (Loss), before Tax	610	(206)
Other comprehensive income (loss), Tax (Expense) or Benefit	247	(2,118)
Other comprehensive income (loss), Net-of-tax Amount	$ 857	$ (2,324)