Consolidated Statements of Comprehensive Income (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
Income Statement [Abstract]
Net earnings	$ 213	$ (1,746)	$ 1,783	$ (557)
Other comprehensive income, net of tax:
Foreign currency translation adjustments	151	(813)	48	(560)
Amortization of net prior service costs and net actuarial losses	34	(124)	25	(150)
Other comprehensive income	185	(937)	73	(710)
Comprehensive income	$ 398	$ (2,683)	$ 1,856	$ (1,267)