Computation of Basic and Diluted Net Income (Loss) Per Share (Details) (USD $)	3 Months Ended			6 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Sep. 17, 2010 Warrant [Member]
Basic Shares:
Weighted average common shares outstanding (in shares)	9,227,698		9,211,998	9,226,216	9,184,655
Weighted average common shares repurchased (in shares)	(167,218)		0	(86,584)	0
Weighted average unvested restricted stock (in shares)	0		(13,634)	0	(17,735)
Basic shares (in shares)	9,060,480		9,198,364	9,139,632	9,166,920
Dilutive Shares:
Basic shares (in shares)	9,060,480		9,198,364	9,139,632	9,166,920
Weighted average dilutive securities (in shares)	215,414		538,301	247,408	0
Dilutive Shares (in shares)	9,275,894		9,736,665	9,387,040	9,166,920
Anti-dilutive potential shares of common stock	2,600,000		2,100,000	2,600,000	2,700,000
Authorized amount of stock repurchase, minimum	$ 2,000,000	$ 1,500,000
Stock repurchased (in shares)	333,823			379,811
Stock repurchased aggregate price	$ 1,200,000			$ 1,453,000	$ 0
Average price paid for shares repurchased (in dollars per share)	3.69			3.83
Warrant [Abstract]
Warrant price (in dollars per share)						$ 3.15
Number of shares warrants give right to purchase (in shares)						400,000
Exercise price of warrant (in dollars per share)						$ 4.65