Accumulated Other Comprehensive Loss (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income [Roll Forward]
Balance at beginning of period	$ (7,524)	$ (13,948)
Other comprehensive income before reclassifications	(1,137)	242
Amounts reclassified from accumulated other comprehensive loss, net of tax	836	968
Net current period other comprehensive income, net of tax	(301)	1,210
Accumulated other comprehensive (loss) income	(7,825)	(12,738)
Income tax benefit	(486)	(558)
Unrecognized pension and postretirement benefits
Accumulated Other Comprehensive Income [Roll Forward]
Balance at beginning of period	(9,280)	(15,532)
Other comprehensive income before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive loss, net of tax	836	968
Net current period other comprehensive income, net of tax	836	968
Accumulated other comprehensive (loss) income	(8,444)	(14,564)
Income tax benefit	(486)	(558)
Foreign currency
Accumulated Other Comprehensive Income [Roll Forward]
Balance at beginning of period	1,756	1,584
Other comprehensive income before reclassifications	(1,137)	242
Amounts reclassified from accumulated other comprehensive loss, net of tax	0	0
Net current period other comprehensive income, net of tax	(1,137)	242
Accumulated other comprehensive (loss) income	619	1,826
Income tax benefit	$ 0	$ 0