Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
NET INCOME	$ 52,433	$ 119,484	$ 81,260
OTHER COMPREHENSIVE INCOME/(LOSS):
Foreign currency translation adjustment	5,616	(3,511)	21,877
Net unrealized income/(loss) on qualifying cash flow hedges, net of tax provision/(benefit) of $2,702, $759 and ($904), respectively	4,053	1,334	(1,590)
Changes in pension and other postretirement benefit, net of tax (benefit)/provision of ($166), ($24) and $106, respectively	(293)	(42)	344
Other comprehensive income/(loss)	9,376	(2,219)	20,631
COMPREHENSIVE INCOME	$ 61,809	$ 117,265	$ 101,891