CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
Net income	$ 9,463	$ 16,674	$ 22,759	$ 42,169
Other comprehensive income/(loss), before tax:
Foreign currency translation adjustments	11,121	(48,693)	3,899	(8,950)
Pension settlement			118,350
Pension plan remeasurement			(24,617)
Amortization of pension liability adjustment
Transition obligation	22	22	59	66
Prior service cost/(credit)	(595)	(908)	(2,412)	(2,723)
Net actuarial loss	1,739	2,175	6,186	6,525
Derivative valuation adjustment	(235)	(2,517)	(899)	(4,033)
Income taxes related to items of other comprehensive (loss)/income:
Pension settlement			(39,146)
Pension plan remeasurement			7,270
Amortization of pension liability adjustment	(361)	(400)	(1,188)	(1,199)
Derivative valuation adjustment	92	982	351	1,573
Other comprehensive income, net of tax	11,783	(49,339)	67,853	(8,741)
Comprehensive income/(loss)	$ 21,246	$ (32,665)	$ 90,612	$ 33,428