CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balances at Dec. 31, 2010	$ 20	$ 36,940	$ (32,843)	$ 4,117
Balances (in shares) at Dec. 31, 2010	20,479
Fair value of common stock warrants issued for services rendered	0	80	0	80
Stock-based compensation expense	0	1,270	0	1,270
Issuance of common stock upon exercise of stock options	1	0	0	1
Issuance of common stock upon exercise of stock options (in shares)	99
Net loss	0	0	(356)	(356)
Balances at Dec. 31, 2011	21	38,290	(33,199)	5,112
Balances (in shares) at Dec. 31, 2011	20,578
Fair value of common stock warrants issued for services rendered	0	74	0	74
Stock-based compensation expense	0	878	0	878
Issuance of common stock upon exercise of stock options	1	14	0	15
Issuance of common stock upon exercise of stock options (in shares)	1,499
Net loss	0	0	(676)	(676)
Balances at Dec. 31, 2012	$ 22	$ 39,256	$ (33,875)	$ 5,403
Balances (in shares) at Dec. 31, 2012	22,077