CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Total Comprehensive Income summary
Net Income	$ 24,104	$ 25,982	$ 53,507
Translation adjustments	6,453	7,317	(690)
Unrealized gain (loss) on defined benefit plan, net of tax	(16,971)	(5,411)	10,008
Total comprehensive income	13,586	27,888	62,825
Less: NET (INCOME) LOSS attributable to noncontrolling interest	2,428	(1,830)	(2,770)
Total comprehensive income attributable to common stockholders	$ 16,014	$ 26,058	$ 60,055