CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME
Revenues	$ 25,143	$ 26,847
Cost of goods sold	17,620	19,210
Gross margin	7,523	7,637
Operating costs and expenses:
Selling	1,293	1,365
General and administrative	2,992	2,947
Engineering and development	1,747	1,553
Amortization of intangible assets	84	174
Total operating costs and expenses	6,116	6,039
Operating income	1,407	1,598
Other (income) expense:
Interest expense	9	7
Other (income) expense, net	(14)	(17)
Total other (income) expense, net	(5)	(10)
Income before income taxes	1,412	1,608
Provision for income taxes	(452)	(450)
Net income	960	1,158
Foreign currency translation adjustment	(460)	515
Comprehensive income	$ 500	$ 1,673
Basic earnings per share:
Earnings per share (in dollars per share)	$ 0.11	$ 0.14
Basic weighted average common shares (in shares)	8,733	8,565
Diluted earnings per share:
Earnings per share (in dollars per share)	$ 0.11	$ 0.14
Diluted weighted average common shares (in shares)	8,733	8,565