Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Consolidated Statements of Comprehensive Income
Net income	$ 29,290	$ 16,188	$ 22,895
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustment	(3,475)	1,724	(1,306)
Pension and post-retirement benefit plans (net of tax expense (benefit): $1,199, ($481) and ($1,333))	2,258	(1,043)	(2,424)
Reclassification of pension liability adjustments to earnings (net of tax expense: $134, $125 and $78)	303	278	170
Other comprehensive (loss) income, net of tax	(914)	959	(3,560)
Comprehensive income	$ 28,376	$ 17,147	$ 19,335