Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013
Changes in accumulated other comprehensive income [Roll Forward]
Beginning balance at Beginning of period	$ 884			$ 1,786
Other comprehensive income before reclassifications	(1,715)			(2,321)
Amounts reclassified from accumulated other comprehensive income	(118)			(414)
Current period other comprehensive income, net	(1,833)			(2,735)
Ending balance at End of period	(949)			(949)
Amortization of pension and postretirement benefit plans [Abstract]
Prior service benefit	755		1,078	2,264		3,238
Unrecognized loss	(569)		(781)	(1,707)		(2,342)
Income tax benefit	(68)		(110)	(143)		(269)
Total reclassifications for the period	(118)			(414)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Changes in accumulated other comprehensive income [Roll Forward]
Amounts reclassified from accumulated other comprehensive income	(118)			(414)
Amortization of pension and postretirement benefit plans [Abstract]
Prior service benefit	(755)	[1]		(2,264)	[1]
Unrecognized loss	569	[1]		1,707	[1]
Total before income tax	(186)			(557)
Income tax benefit	68			143
Total reclassifications for the period	(118)			(414)
Foreign Currency Translation Adjustments [Member]
Changes in accumulated other comprehensive income [Roll Forward]
Beginning balance at Beginning of period	2,831			3,562
Other comprehensive income before reclassifications	(1,693)			(2,424)
Amounts reclassified from accumulated other comprehensive income	0			0
Current period other comprehensive income, net	(1,693)			(2,424)
Ending balance at End of period	1,138			1,138
Amortization of pension and postretirement benefit plans [Abstract]
Total reclassifications for the period	0			0
Unrecognized Pension and Postretirement Benefit Costs (Credit) [Member]
Changes in accumulated other comprehensive income [Roll Forward]
Beginning balance at Beginning of period	(1,947)			(1,776)
Other comprehensive income before reclassifications	(22)			103
Amounts reclassified from accumulated other comprehensive income	(118)			(414)
Current period other comprehensive income, net	(140)			(311)
Ending balance at End of period	(2,087)			(2,087)
Amortization of pension and postretirement benefit plans [Abstract]
Total reclassifications for the period	$ (118)			$ (414)

[1] These accumulated other comprehensive income components are included in the computation of net periodic pension and postretirement benefit costs, which are included in selling, general and administrative expenses in our consolidated statements of operations (see Note 11 for additional details)