CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Revenues	$ 27,331	$ 22,031	$ 82,917	$ 59,451
Cost of products sold	19,118	15,474	57,955	42,943
Gross margin	8,213	6,557	24,962	16,508
Operating costs and expenses:
Selling	1,320	991	4,271	2,944
General and administrative	3,030	2,606	9,390	7,026
Engineering and development	1,417	1,074	4,501	3,014
Amortization of intangible assets	185	121	552	446
Insurance recoveries				(685)
Total operating costs and expenses	5,952	4,792	18,714	12,745
Operating income	2,261	1,765	6,248	3,763
Other expense (income), net:
Interest expense	21		68	3
Other expense (income), net	78	(37)	56	(177)
Total other expense (income), net	99	(37)	124	(174)
Income before income taxes	2,162	1,802	6,124	3,937
Provision for income taxes	(605)	(673)	(1,873)	(1,335)
Net income	$ 1,557	$ 1,129	$ 4,251	$ 2,602
Basic net income per share:
Net income per share (in dollars per share)	$ 0.18	$ 0.14	$ 0.51	$ 0.33
Basic weighted average common shares (in shares)	8,497	7,952	8,415	7,859
Diluted net income per share:
Net income per share (in dollars per share)	$ 0.18	$ 0.14	$ 0.50	$ 0.33
Diluted weighted average common shares (in shares)	8,511	7,987	8,564	7,913