Unaudited Condensed Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (1,524)	$ 4,422
Foreign currency translation adjustment	(174)	479
Deferred gain on available for sale securities	63	244
Current period cash flow hedging activity, net of $225 tax benefit and $76 tax expense in the three months ended March 31, 2014 and March 31, 2013, respectively.	(407)	120
Reclassification of hedging activities into earnings, net of $96 and $93 tax benefit in the three months ended March 31, 2014 and March 31, 2013, respectively.	180	149
Reclassification of pension and postretirement adjustments into earnings, net of $83 and $144 tax benefit in the three months ended March 31, 2014 and March 31, 2013, respectively.	158	442
Total other comprehensive income (loss)	(180)	1,434
Comprehensive income (loss)	$ (1,704)	$ 5,856