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Share-based Compensation (Tables)

12 Months Ended

Jun. 30, 2019

Share-based Payment Arrangement, Noncash Expense [Abstract]

Summary of Stock Option Activities

The following table summarizes the Company's stock option activities:

								Weighted
				Weighted				Average
				Average				Remaining
	Number of			Exercise Price				Contractual		Aggregate
	Shares			Per Share				Term (in years)		Intrinsic Value
Outstanding at June 30, 2016	1,859,260			$	11.37			4.71
Granted	—			$	—
Exercised	(693,393	)		$	11.76					$	5,681,783
Canceled or forfeited	(112,500	)		$	12.72
Outstanding at June 30, 2017	1,053,367			$	10.98			4.43
Granted	—			$	—
Exercised	(166,389	)		$	11.00					$	959,257
Canceled or forfeited	—			$	—
Outstanding at June 30, 2018	886,978			$	10.97			4.03
Granted	—			$	—
Exercised	(10,500	)		$	10.50					$	43,415
Canceled or forfeited	—			$	—
Outstanding at June 30, 2019	876,478			$	10.98			3.06		$	758,871
Options vested and expected to vest	876,478			$	10.98			3.06		$	758,871
Exercisable at June 30, 2019	876,478			$	10.98			3.06		$	758,871

Shares Authorized under Stock Option Plans, by Exercise Price Range

Information with respect to stock options outstanding and exercisable as of June 30, 2019 is as follows:

		Options Outstanding									Options Exercisable
Range of Exercise Prices		Number Outstanding			Weighted-Average Remaining Contractual Life  (Years)		Weighted-Average Exercise Price				Number Exercisable			Weighted-Average Exercise Price
$7.21 - $7.21		6,875			4.58		$	7.21			6,875			$	7.21
$7.44 - $7.44		331,139			4.71		$	7.44			331,139			$	7.44
$7.56 - $9.90		195,150			3.71		$	8.93			195,150			$	8.93
$10.50 - $15.00		178,314			1.30		$	13.45			178,314			$	13.45
$17.90 - $18.00		165,000			0.83		$	17.99			165,000			$	17.99
$7.21 - $18.00		876,478			3.06		$	10.98			876,478			$	10.98

Restricted Stock Units Activity

The following table summarizes the Company's MSUs activities:

	Number of Performance-based Restricted Stock Units			Weighted Average Grant Date Fair Value Per Share				Weighted Average Remaining Recognition Period (Years)
Nonvested at June 30, 2018	—			$	—			—
Granted	1,310,000			$	5.17
Vested	—			$	—
Forfeited	(20,000	)		$	5.17
Nonvested at June 30, 2019	1,290,000			$	5.17			4.97
MSUs vested and expected to vest	948,998							4.97

The following table summarizes the Company's PRSU activities:

		Number of Performance-based Restricted Stock Units			Weighted Average Grant Date Fair Value Per Share				Weighted Average Remaining Recognition Period (Years)			Aggregate Intrinsic Value
Nonvested at June 30, 2016		—			$	—			—			$	—
Granted		170,000			$	17.58
Vested		—			$	—
Forfeited		—			$	—
Nonvested at June 30, 2017		170,000			$	17.58			2.21			$	2,833,900
Granted		298,050			$	16.22
Vested		(38,247	)		$	17.58
Forfeited		(7,503	)		$	17.26
Nonvested at June 30, 2018		422,300			$	16.63			2.06			$	6,013,552
Granted		291,750			$	11.18
Vested		(111,623	)		$	16.68
Forfeited		(5,703	)		$	16.78
Nonvested at June 30, 2019		596,724			$	13.95			1.88			$	5,573,402

The following table summarizes the Company's TRSU activities:

		Number of Restricted Stock Units			Weighted Average Grant Date Fair Value Per Share				Weighted Average Remaining Recognition Period (Years)		Aggregate Intrinsic Value
Nonvested at June 30, 2016		933,063			$	9.18			1.73		$	12,997,568
Granted		446,719			$	18.26
Vested		(364,567	)		$	8.34
Forfeited		(40,850	)		$	12.74
Nonvested at June 30, 2017		974,365			$	13.51			1.68		$	16,244,748
Granted		482,397			$	16.46
Vested		(468,051	)		$	13.24
Forfeited		(69,688	)		$	14.25
Nonvested at June 30, 2018		919,023			$	15.14			1.62		$	13,086,888
Granted		527,022			$	11.28
Vested		(499,954	)		$	13.09
Forfeited		(39,750	)		$	13.82
Nonvested at June 30, 2019		906,341			$	14.09			1.62		$	8,465,225

Employee Stock Purchase Plan, Valuation Assumptions

The ESPP is compensatory and results in compensation expense. The fair values of common shares to be issued under the ESPP were determined using the Black-Scholes option pricing model with the following assumptions:

	Year Ended June 30,
	2019		2018		2017
Volatility rate	40.1% - 40.7%		42.1% - 45.3%		39.1% - 44.7%
Risk-free interest rate	2.1% - 2.9%		1.4% - 2.6%		0.6% - 1.3%
Expected term	1.3 years		1.3 years		1.3 years
Dividend yield	—%		—%		—%

Share-based Compensation, Allocation of Recognized Period Costs

Share-based Compensation Expenses

The total share-based compensation expense related to TRSU, PSUs, MSUs, stock options and ESPP described above, recognized in the consolidated statements of operations for the years presented was as follows:

	Year Ended June 30,
	2019				2018				2017
	(in thousands)
Cost of goods sold	$	1,963			$	1,641			$	1,041
Research and development	2,453				1,855				1,361
Selling, general and administrative	8,761				7,916				4,232
	$	13,177			$	11,412			$	6,634

X

- Definition

Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms.

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