CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenues	$ 28,862	$ 19,998	$ 55,586	$ 37,420
Cost of products sold	20,062	14,452	38,837	27,469
Gross margin	8,800	5,546	16,749	9,951
Operating costs and expenses:
Selling	1,489	1,012	2,951	1,953
General and administrative	3,394	2,361	6,360	4,418
Engineering and development	1,550	927	3,084	1,940
Amortization of intangible assets	187	160	367	325
Insurance recoveries				(685)
Total operating costs and expenses	6,620	4,460	12,762	7,951
Operating income	2,180	1,086	3,987	2,000
Other expense (income), net:
Interest expense	23		47	3
Other expense (income), net	(21)	15	(22)	(138)
Total other expense (income), net	2	15	25	(135)
Income before income taxes	2,178	1,071	3,962	2,135
Provision for income taxes	(697)	(332)	(1,268)	(662)
Net income	$ 1,481	$ 739	$ 2,694	$ 1,473
Basic net income per share:
Net income per share (in dollars per share)	$ 0.17	$ 0.09	$ 0.32	$ 0.19
Basic weighted average common shares (in shares)	8,477	7,856	8,374	7,811
Diluted net income per share:
Net income per share (in dollars per share)	$ 0.17	$ 0.09	$ 0.32	$ 0.19
Diluted weighted average common shares (in shares)	8,523	7,869	8,539	7,819