CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME
Revenues	$ 101,968	$ 110,941
Cost of products sold	72,328	77,410
Gross margin	29,640	33,531
Operating costs and expenses:
Selling	5,093	5,626
General and administrative	10,811	12,639
Engineering and development	6,060	5,983
Adjustment to contingent consideration		(1,101)
Amortization of intangible assets	548	732
Total operating costs and expenses	22,512	23,879
Operating income	7,128	9,652
Other (income) expense:
Interest expense	13	84
Other (income) expense, net	(383)	49
Total other (income) expense, net	(370)	133
Income before income taxes	7,498	9,519
Provision for income taxes	(2,101)	(2,552)
Net income	5,397	6,967
Foreign currency translation adjustment	624	(559)
Pension adjustments	(331)	(786)
Comprehensive income	$ 5,690	$ 5,622
Basic earnings per share:
Earnings per share (in dollars per share)	$ 0.63	$ 0.83
Basic weighted average common shares (in shares)	8,616	8,437
Diluted earnings per share:
Earnings per share (in dollars per share)	$ 0.63	$ 0.81
Diluted weighted average common shares (in shares)	8,616	8,575