CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME
Revenues	$ 25,352	$ 26,836	$ 50,495	$ 53,683
Cost of products sold	17,817	18,685	35,437	37,895
Gross margin	7,535	8,151	15,058	15,788
Operating costs and expenses:
Selling	1,214	1,290	2,507	2,655
General and administrative	2,715	2,978	5,584	5,854
Engineering and development	1,658	1,563	3,405	3,116
Business development costs	565		638
Relocation costs	234		234
Amortization of intangible assets	85	166	169	340
Total operating costs and expenses	6,471	5,997	12,537	11,965
Operating income	1,064	2,154	2,521	3,823
Other income (expense), net:
Interest expense	(8)	(3)	(17)	(10)
Other income, net	132	373	96	319
Total other income, net	124	370	79	309
Income before income taxes	1,188	2,524	2,600	4,132
Provision for income taxes	(369)	(707)	(821)	(1,157)
Net income	819	1,817	1,779	2,975
Foreign currency translation adjustment	6	(955)	(454)	(440)
Comprehensive income	$ 825	$ 862	$ 1,325	$ 2,535
Basic net income per share:
Net income per share (in dollars per share)	$ 0.09	$ 0.21	$ 0.20	$ 0.35
Basic weighted average common shares (in shares)	8,806	8,675	8,766	8,621
Diluted net income per share:
Net income per share (in dollars per share)	$ 0.09	$ 0.21	$ 0.20	$ 0.35
Diluted weighted average common shares (in shares)	8,806	8,675	8,766	8,621