10. WARRANTS

9 Months Ended

Jan. 31, 2013

Warrants and Rights Note Disclosure [Abstract]

10. WARRANTS

During the quarter ended January 31, 2013, 118,444 warrants were exercised on a cashless basis in exchange for 46,427 shares of our common stock. The warrants were issued in December 2008 in connection with a three-year term loan we entered into during fiscal year 2009.

As of January 31, 2013, the following warrants to purchase an aggregate of 374,803 shares of our common stock were outstanding:

Date Issued	Warrants Outstanding	Exercise Price Per Share	Expiration Date
December 19, 2008	101,523	$1.4775	December 19, 2013
August 30, 2012 (Note 7)	273,280	$2.4700	August 30, 2018
Total Warrants Outstanding	374,803