CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Foreign currency translation adjustments, deferred income taxes	$ (101)	$ 9,055
Net gain (loss) on cash flow hedging instruments, deferred income taxes	386	(437)
Pension liability adjustments, deferred income taxes	(406)	(4,091)
Unrealized gain on marketable securities, deferred income taxes	$ 3	$ (5)