Computation of Basic and Diluted Net Income (Loss) Per Share (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Jun. 30, 2012	Mar. 31, 2012	Sep. 17, 2010 Warrant [Member]
Basic Shares:
Weighted average common shares outstanding (in shares)	8,856,289		9,224,755
Weighted average common shares repurchased (in shares)	0		(7,282)
Basic shares (in shares)	8,856,289		9,217,473
Dilutive Shares:
Basic shares (in shares)	8,856,289		9,217,473
Weighted average dilutive securities (in shares)	219,243		278,489
Dilutive Shares (in shares)	9,075,532		9,495,962
Anti-dilutive potential shares of common stock	2,600,000		2,500,000
Authorized amount of stock repurchase, minimum		$ 2,000,000	$ 1,500,000
Stock repurchased (in shares)			45,988
Stock repurchased aggregate price	$ 0		$ 224,000
Average price paid for shares repurchased (in dollars per share)			$ 4.87
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