CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash dividends declared per common share	$ 0.615	$ 0.615
Translation adjustments, deferred income taxes	$ (1,094)	$ (4,618)
Cash flow hedging instrument adjustments, deferred income taxes	915	(653)
Pension liability adjustments, deferred income taxes	(2,439)	189
Unrealized gain on marketable securities, deferred income taxes	$ (13)	$ (2)
Stock options exercised (in shares)	20,000	38,900
Vesting of restricted stock units and other (in shares)	62,039	68,558