Consolidated Statements of Comprehensive Income (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Consolidated Statements of Comprehensive Income (unaudited) [Abstract]
Net income	$ 7,993	$ 982
Other comprehensive (loss)/income:
Foreign currency translation adjustments	(17,983)	(323)
Interest rate swap agreement, net of tax of $30 and $14 at respective dates	54	27
Pension plan amortization of net actuarial loss and prior service cost, net of tax of $108 and $70 at respective dates	230	145
Comprehensive (loss)/income	$ (9,706)	$ 831