Stockholders' Equity (Tables)

12 Months Ended

Apr. 30, 2014

Stock option activity was as follows:


	Number of Options (in thousands)			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (in thousands)
Balance as of April 30, 2012		12,083		$	4.57
Options granted		5,053			8.43
Options exercised		(4,597	)		2.45
Options forfeited		(1,710	)		7.49

Balance as of April 30, 2013		10,829			6.83
Options granted		2,092			8.32
Options exercised		(3,360	)		3.34
Options forfeited		(2,470	)		10.22

Balance as of April 30, 2014		7,091		$	7.74		7.02	$	6,264

Options vested and expected to vest at April 30, 2014		6,901		$	7.70		6.98	$	6,253

Options vested and exercisable as of April 30, 2014		3,658		$	6.71		5.40	$	5,982

The summary of stock options as of April 30, 2014 is as follows (number of options in thousands):


	Options Outstanding						Options Exercisable
Range of Exercise Prices	Number of Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (in years)		Number of Options		Weighted Average Exercise Price
$0.00 – $2.86		789	$	2.04		4.31		766	$	2.02
$2.96 – $4.85		381	$	4.36		5.98		377	$	4.35
$4.86 – $4.86		759	$	4.86		4.19		714	$	4.86
$5.35 – $6.54		725	$	6.40		8.10		333	$	6.31
$6.58 – $7.32		733	$	7.08		8.96		195	$	6.82
$7.39 – $7.50		759	$	7.41		8.80		88	$	7.39
$7.51 – $9.46		815	$	8.88		7.94		300	$	8.72
$9.51 – $9.60		713	$	9.53		7.93		133	$	9.59
$10.24 – $12.60		843	$	11.91		6.21		473	$	12.24
$13.95 – $18.67		574	$	14.64		7.73		279	$	14.74

$0.00 – $18.67		7,091	$	7.74		7.02		3,658	$	6.71

Restricted stock activity was as follows (number of restricted shares in thousands):


	Number of Restricted Shares			Weighted Average Grant Date Fair Value
Unvested balance as of April 30, 2012		16		$	18.67
Restricted shares granted		1,251			11.14
Restricted shares vested		(67	)		15.59
Restricted shares forfeited		(105	)		14.71

Unvested balance as of April 30, 2013		1,095		$	10.63
Restricted shares granted		2,629			8.30
Restricted shares vested		(321	)		11.11
Restricted shares forfeited		(426	)		11.18

Unvested balance as of April 30, 2014		2,977		$	8.44

Employee Stock Purchase Plan

The fair value of the Company’s ESPP was estimated at the date of grant using a Black-Scholes option pricing model with the following assumptions:

Stock Options

The fair value of the Company’s options was estimated at the date of grant using a Black-Scholes option pricing model with the following assumptions: