STOCK BASED COMPENSATION (Tables)

12 Months Ended

Jun. 30, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-based compensation expense

The following table shows total stock-based compensation expense included in the Consolidated Statements of Operations and Comprehensive Income for fiscal 2013, 2012 and 2011 (in thousands):

	Years Ended Years Ended June 30,
	2013		2012		2011
Cost of sales	$	446	$	117	$	30
Research and development	1,433		542		285
Sales, general and administrative	1,497		834		637
	$	3,376	$	1,493	$	952

Option activity for Company's stock incentive plans

The following is a summary of option activity for the Company’s stock incentive plans for fiscal 2013, 2012 and 2011:

	Common Stock Options Outstanding
	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
						(In thousands)
Balance, June 30, 2010	5,796,170		$	0.23	6.92	$	12,642
Granted	1,149,062		3.42
Forfeitures and cancellations	(773,525	)	1.03
Balance, June 30, 2011	6,171,707		$	0.72	6.44	$	43,135
Granted	161,000		10.44
Exercised	(2,885,470	)	0.28
Forfeitures and cancellations	(99,792	)	4.71
Balance, June 30, 2012	3,347,445		$	1.45	6.62	$	42,920
Granted	683,500		11.29
Exercised	(266,558	)	2.39
Forfeitures and cancellations	(150,125	)	5.68
Balance, June 30, 2013	3,614,262		$	3.07	6.17	$	52,330
Vested and expected to vest as of June 30, 2013	3,550,722		$	2.94	6.12	$	51,854
Vested and exercisable as of June 30, 2013	2,618,311		$	0.85	5.20	$	43,709

Stock options outstanding by exercise price range

Additional information regarding options outstanding as of June 30, 2013 is as follows (in thousands, except weighted average exercise price amounts and contractual life):

	Options Outstanding				Options Exercisable
Range of Exercise Prices	Number of Options	Weighted Average Remaining Contractual Life (Years)	Weighted Average Exercise Price		Number of Options	Weighted Average Exercise Price
$0.01 – $0.04	253,680	3.41	$	0.01	253,680	$	0.01
$0.05 – $0.39	1,764,890	4.78	0.05		1,764,890	0.05
$0.40 – $2.89	206,375	6.52	1.41		150,123	1.22
$2.90 – $4.07	383,268	7.25	2.90		264,711	2.90
$4.08 – $10.76	348,393	7.82	5.67		171,996	5.65
$10.77 – $11.74	472,500	9.37	10.77		—	—
$11.75 – $26.28	185,156	9.32	13.65		12,911	16.40
$0.01 – $26.28	3,614,262	6.17	$	3.07	2,618,311	$	0.85

Fair value of employee stock options

For fiscal 2013, 2012 and 2011 the fair value of employee stock options was estimated using the following weighted average assumptions:

	Years Ended Years Ended June 30,
	2013			2012			2011
Expected term	6.1 years			6.1 years			6.1 years
Expected volatility	52		%	49		%	65		%
Risk-free interest rate	0.9		%	1.6		%	4.2		%
Expected dividend yield	—			—			—
Weighted average grant date fair value	$	5.57		$	5.05		$	2.10

Activity of RSUs

The following table summarizes the activity of the RSUs made by the Company:

	Number of Shares		Weighted Average Grant Date Fair Value
Non-vested RSUs, June 30, 2010	501,180		$	1.92
RSUs granted	112,500		5.14
RSUs vested	(125,295	)	1.92
Non-vested RSUs, June 30, 2011	488,385		$	2.66
RSUs granted	169,710		22.33
RSUs vested	(146,475	)	2.37
RSUs cancelled	(58,000	)	8.04
Non-vested RSUs, June 30, 2012	453,620		$	9.42
RSUs granted	656,500		14.11
RSUs vested	(70,512	)	14.14
RSUs cancelled	(294,702	)	5.29
Non-vested RSUs, June 30, 2013	744,906		$	14.74