Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data	Total	Common stock	Additional Paid-in Capital	Accumulated Deficit
Beginning Balance at Dec. 31, 2009	$ 12,015	$ 209	$ 37,609	$ (25,803)
Beginning Balance (in shares) at Dec. 31, 2009		20,941,706
Sale of common stock and warrants (in shares)		2,737,500
Sale of common stock and warrants	5,034	28	5,006	0
Issuance of common stock upon exercise of stock options (in shares)		101,400
Issuance of common stock upon exercise of stock options	91	1	90	0
Value of share-based arrangements (in shares)		0
Value of share-based arrangements	182	0	182	0
Net income	701	0	0	701
Ending Balance at Dec. 31, 2010	18,023	238	42,887	(25,102)
Ending Balance (in shares) at Dec. 31, 2010		23,780,606
Repurchase of warrants	(90)	0	(90)	0
Issuance of common stock upon exercise of stock options (in shares)		2,500
Issuance of common stock upon exercise of stock options	3	0	3	0
Value of share-based arrangements (in shares)		0
Value of share-based arrangements	69	0	69	0
Net income	1,034	0	0	1,034
Ending Balance at Dec. 31, 2011	$ 19,039	$ 238	$ 42,869	$ (24,068)
Ending Balance (in shares) at Dec. 31, 2011		23,783,106