CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash dividends declared per common share	$ 0.41	$ 0.41
Translation adjustments, deferred income taxes	$ 7,555	$ 2,357
Cash flow hedging instrument adjustments, deferred income taxes	769	(895)
Pension liability adjustments, deferred income taxes	(4,548)	(1,325)
Unrealized gain (loss) on marketable securities, deferred income taxes	$ (5)	$ (1)
Stock options exercised (in shares)	20,000	38,900
Vesting of restricted stock units and other (in shares)	60,674	48,519