Stock Incentive Plan and Employee Stock Purchase Plan (Tables)

12 Months Ended

Jun. 30, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of share-based compensation charges included in the Company's consolidated statements of operations and comprehensive loss

The following table summarizes the share‑based compensation charges included in the Company’s consolidated statements of operations and comprehensive loss (in thousands):

	Years ended June 30,
	2018		2017		2016
Cost of revenue	$	1,866	$	1,991	$	1,677
Research and development		2,312		2,490		2,564
Selling and marketing		1,390		2,827		2,633
General and administrative		6,721		6,321		5,764
Total	$	12,289	$	13,629	$	12,638

Schedule of assumptions used for determining fair value of stock options

The fair value of each option is estimated at the date of grant using the Black‑Scholes option pricing formula with the following assumptions:

	Years Ended June 30,
	2018			2017			2016(1)
Risk–free interest rate		1.98	%		1.76	%		—	%
Dividend yield		—	%		—	%		—	%
Expected term		5.25			5.12			—
Expected volatility		43.9	%		46.4	%		—	%

(1) The Company did not issue any stock options for the year ended June 30, 2016.

Schedule of option activity under the Company's Incentive Plan

A summary of option activity under the Company’s incentive plan during the fiscal years is presented below (in thousands except per share and term amounts):

	Options Outstanding			Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (In Years)		Aggregate Intrinsic Value
Balance at June 30, 2015		2,537		$	7.91		5.10	$	1,862
Options granted		—			—
Options exercised		(59	)		4.89
Options forfeited/expired		(101	)		7.53
Balance at June 30, 2016		2,377			8.00		3.97	$	452
Options granted		760			5.05
Options exercised		(113	)		5.18
Options forfeited/expired		(561	)		13.38
Balance at June 30, 2017		2,463			6.05		5.42	$	191
Options granted		795			4.12
Options exercised		(109	)		4.02
Options forfeited/expired		(465	)		7.76
Balance at June 30, 2018		2,684			5.26		6.16	$	60
Vested or Expected to vest at June 30, 2018		2,684			5.26		6.16	$	60
Exercisable at June 30, 2018		1,496		$	5.92		3.90	$	9

Summary of information about outstanding and exercisable options

The following table summarizes information about outstanding and exercisable options at June 30, 2018 (in thousands, except years and exercise price):

	Options Outstanding						Options Exercisable
Range of Exercise Prices	Number Outstanding		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Number Outstanding		Weighted Average Exercise Price
$4.00 – 4.00		708		9.07	$	4.00		22	$	4.00
$4.01 – 5.00		243		6.01		4.46		134		4.14
$5.05 – 5.05		650		8.42		5.05		257		5.05
$5.38 – 5.77		303		1.52		5.68		303		5.67
$5.97 – 6.28		300		4.07		6.26		300		6.23
$6.32 – 6.96		428		3.18		6.74		428		6.74
$7.06 – 8.25		19		2.76		7.75		19		7.75
$8.54 – 8.54		—		0.16		8.54		—		8.54
$8.56 – 8.56		27		2.59		8.56		27		8.56
$8.89 – 8.89		6		2.83		8.89		6		8.89
Total Outstanding		2,684		6.16	$	5.26		1,496	$	5.92

Summary of activity of RSUs, PSUs and MSUs

The following table summarizes the activity of RSUs, PSUs and MSUs (in thousands, except fair value per share):

Unvested Restricted Stock	Restricted Stock Units			Performance Stock Units			Market Stock Units			Total Number of Shares Underlying Stock Awards			Weighted Average Grant Date Fair Value Per Share
Unvested at June 30, 2015		3,325			20			1,138			4,483		$	6.86
Granted		2,563			—			585			3,148			6.12
Vested		(1,138	)		(20	)		(413	)		(1,571	)		6.81
Cancelled/Forfeited		(546	)		—			(148	)		(694	)		6.59
Unvested at June 30, 2016		4,204			—			1,162			5,366			6.48
Granted		1,622			10			708			2,340			5.03
Vested		(1,534	)		—			(176	)		(1,710	)		4.99
Cancelled/Forfeited		(408	)		—			(361	)		(769	)		5.86
Unvested at June 30, 2017		3,884			10			1,333			5,227			5.75
Granted		1,529			53			654			2,236			4.40
Vested		(1,167	)		—			—			(1,167	)		6.24
Cancelled/Forfeited		(546	)		—			(590	)		(1,136	)		5.87
Unvested at June 30, 2018		3,700			63			1,397			5,160		$	5.03

Schedule of weighted average assumptions used for determining fair value of ESPP shares

The Company estimates the fair value of ESPP shares at the date of grant using the Black‑Scholes option pricing model. The weighted average assumptions were as follows:

	Years Ended June 30,
	2018	2017	2016
Risk–free interest rate	1.07% –2.28%	0.49% – 0.70%	0.51% – 0.70%
Dividend yield	—%	—%	—%
Expected term	0.5 – 1.0	0.5 – 1.0	0.5 – 1.0
Expected volatility	31.3% – 51.1%	24.6% – 42.0%	33.3% – 49.1%