CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income	$ 19,155	$ 16,806	$ 13,779
Other comprehensive income:
Change in pension plans, net of income taxes of $4,028, $1,832, and $3,712	6,572	(2,989)	(6,056)
Foreign currency translation adjustments	2,950	1,241	(2,232)
Total other comprehensive income (loss), net of tax	9,522	(1,748)	(8,288)
Comprehensive income	$ 28,677	$ 15,058	$ 5,491