Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net earnings	$ 4,227us-gaap_NetIncomeLoss	$ 4,632us-gaap_NetIncomeLoss
Other comprehensive income (loss):
Foreign currency translation adjustment	(696)	140
Pension and postretirement benefits, net of tax	131	121
Comprehensive income	$ 3,662us-gaap_ComprehensiveIncomeNetOfTax	$ 4,893us-gaap_ComprehensiveIncomeNetOfTax

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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