STOCKHOLDERS' EQUITY (Tables)

9 Months Ended

Jan. 31, 2013

A summary of stock option activity for the nine months ended January 31, 2013 is as follows:


	Stock Options			Weighted Average Exercise Price
Outstanding, April 30, 2012		1,661		$	10.55
Granted		285		$	4.03
Exercised		—		$	—
Forfeited		(589	)	$	11.43

Outstanding, January 31, 2013		1,357		$	8.81

Exercisable, January 31, 2013		981		$	10.64

Summary of Restricted Stock, Restricted Stock Unit and Performance Stock Unit Activity

A summary of restricted stock, restricted stock unit and performance stock unit activity for the nine months ended January 31, 2013 is as follows:


	Restricted Stock / Restricted Stock Units			Weighted Average Grant Price		Performance Stock Units (1)			Weighted Average Grant Price
Outstanding, April 30, 2012		784		$	4.47		596		$	4.96
Granted		415		$	5.02		316		$	5.17
Class A Common Stock Vested		(489	)	$	4.01		—		$	—
Forfeited		(69	)	$	4.82		(166	)	$	5.01

Outstanding, January 31, 2013		641		$	5.09		746		$	5.04

(1)	Performance stock units are included at the 100% attainment level. Attainment of maximum annual returns on net assets could result in the issuance of an additional 435 shares of Class A common stock.

Schedule of Fair Values of Stock Options Related to Shares Issued Under Employee Stock Purchase Plan

Our calculations of stock-based compensation expense associated with stock options and our Employee Stock Purchase Plan for the three and nine months ended January 31, 2013 and 2012 were made using the Black-Scholes valuation model. The fair value of stock options grants and shares to be purchased under our Employee Stock Purchase Plan were estimated assuming no expected dividend yield using the following weighted average assumptions for the three and nine months ended January 31, 2013 and 2012:


	Three Months Ended January 31,						Nine Months Ended January 31,
	2013			2012			2013			2012
Stock Options:
Expected life		6.79 years			—			6.79 years			—
Risk-free interest rate		1.04	%		0.00	%		1.04	%		0.00	%
Expected volatility		84.55	%		0.00	%		84.55	%		0.00	%

	Three Months Ended January 31,						Nine Months Ended January 31,
	2013			2012			2013			2012
Employee Stock Purchase Plan:
Expected life		0.5 years			0.5 years			0.5 years			0.5 years
Risk-free interest rate		0.12	%		0.06	%		0.11	%		0.12	%
Expected volatility		53.09	%		53.78	%		43.73	%		47.54	%