Stock-Based Compensation (Details Textual) (USD $)	3 Months Ended		12 Months Ended	3 Months Ended					3 Months Ended		1 Months Ended	3 Months Ended
	Apr. 30, 2013	Apr. 30, 2012	Jan. 31, 2013	Apr. 30, 2013 Stock Option Plan [Member]	Apr. 30, 2013 Stock Plan [Member]	Jan. 31, 2013 Stock Plan [Member]	Jun. 30, 2011 Stock Plan [Member]	Apr. 30, 2013 Two plans [Member]	Apr. 30, 2013 ISOs [Member]	Apr. 30, 2013 NSOs [Member]	Jun. 30, 2011 Restricted Stock [Member]	Apr. 30, 2013 Restricted Stock [Member]	Apr. 30, 2012 Restricted Stock [Member]
Stock-Based Compensation (Textual) [Abstract]
Number of shares of common stock authorized for grant during the period							500,000	495,000
Number of shares of common stock available for award at January 31, 2013						10,500
Expiration dates of stock incentive plans				2011-07	2021-07
Incentive stock option award maximum expiration period									10 years	10 years
Incentive stock option award minimum expiration period									7 years
Period to become exercisable									1 year	1 year
Restricted stock awarded to employee											5,000
Vesting period												2 years
Market value of the shares amortized												$ 6,000	$ 6,000
Stock-Based Compensation (Additional Textual) [Abstract]
Compensation expense	436,000	236,000
Unrecognized compensation cost	844,000
Intrinsic value of the stock options exercised	0
Intrinsic value of outstanding stock options	3,224,000
Intrinsic value of exercisable stock options	$ 3,178,000
Method used for fair value assumption	Black-Scholes option-pricing model
Conversion price for outstanding warrants	7.75
Shares exercised related to warrants		4,000	160,000
Warrants outstanding			0