Condensed Consolidated Statements of Comprehensive Income Loss (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Condensed Consolidated Statements of Comprehensive Income [Abstract]
Net income (loss)	$ 5,403	$ 298	$ 8,565	$ (723)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	718	(4,399)	(176)	1,661
Defined benefit pension plan, net of tax:
Amortization of deferred loss, net of tax provision of $8 and tax benefit of $117 for the three months ended September 30, 2012 and 2011, respectively; net of tax provision of $24 and tax benefit of $117 for the nine months ended September 30, 2012 and 2011, respectively	45	(34)	138	117
Amortization of prior service cost, net of tax provision of $1 and tax benefit of $18 for the three months ended September 30, 2012 and 2011, respectively; net of tax provision of $5 and tax benefit of $18 for the nine months ended September 30, 2012 and 2011, respectively	10	(6)	27	17
Other comprehensive income (loss), net of tax	773	(4,439)	(11)	17,965
Comprehensive income (loss)	$ 6,176	$ (4,141)	$ 8,554	$ 1,072