Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]
Net earnings	$ 302	$ 1,262	$ 892	$ 2,175
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustments	657	(350)	(19)	(484)
Amortization of net prior service costs and net actuarial losses	10	(22)	73	30
Other comprehensive income (loss)	667	(372)	54	(454)
Comprehensive income	$ 969	$ 890	$ 946	$ 1,721