Shareholders' Equity and Share-based Compensation (Tables)

9 Months Ended

Mar. 31, 2016

Stock Options

The following table summarizes the Company's stock option activities for the nine months ended March 31, 2016:



			Weighted
			Average
	Number of		Exercise Price		Aggregate
	Shares		Per Share		Intrinsic Value
Outstanding at June 30, 2015	2,836,217		$	10.77	$	1,410,538
Granted	—		$	—
Exercised	(426,612	)	$	7.59	$	844,067
Canceled or forfeited	(310,512	)	$	12.34
Outstanding at March 31, 2016	2,099,093		$	11.19	$	3,855,252

Information with respect to stock options outstanding and exercisable at March 31, 2016 is as follows:



	Options Outstanding				Options Vested and Exercisable
	Number Outstanding	Weighted-Average Remaining Contractual Life (years)	Weighted-Average Exercise Price		Number Exercisable	Weighted-Average Exercise Price
Total options outstanding	2,099,093	4.73	$	11.19	1,791,713	$	11.80
Options vested and expected to vest	2,074,209	4.69	$	11.23

Options expected to vest are the result of applying the pre-vesting forfeiture rate assumption to total outstanding options.

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The fair value of stock options granted were estimated at the date of grant using the Black-Scholes option valuation model for the nine months ended March 31, 2016 with the following weighted average assumptions:



	Nine Months Ended March 31,
	2016
Volatility rate	39.44% - 40.13%
Risk-free interest rate	1.6% - 1.7%
Expected term	5.5 years
Dividend yield	0%

Historically, the Company estimates its expected volatility based on that of the publicly traded shares of industry peers over a period equivalent to the expected term of the stock awards granted. Beginning in July 2015, the Company's publicly traded shares history is also included in estimating the volatility rate.

Restricted Stock Units Activity

Restricted Stock Units ("RSU")

The following table summarizes the Company's RSU activities for the nine months ended March 31, 2016:



	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, 2015	873,946		$	8.64	1.77	$	7,638,288
Granted	409,079		$	10.93
Vested	(271,859	)	$	8.83
Forfeited	(94,293	)	$	8.78
Nonvested at March 31, 2016	916,873		$	9.59	1.89	$	10,864,945
RSUs vested and expected to vest	776,954				1.79	$	9,206,903

The fair value of RSU is estimated based on the market price of the Company's share on the date of grant.

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]

Employee Share Purchase Plan ("ESPP")

The assumptions used to estimate the fair values of common shares issued under the ESPP were as follows:




	Nine Months Ended March 31,
	2016
Volatility rate	32.2%
Risk-free interest rate	0.3% - 0.9%
Expected term	1.3 years
Dividend yield	0%

Share-based Compensation, Allocation of Recognized Period Costs

Share-based Compensation Expense

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



	Three Months Ended March 31,				Nine Months Ended March 31,
	2016		2015		2016		2015
	(in thousands)				(in thousands)
Cost of goods sold	$	187	$	167	$	475	$	495
Research and development	309		43		766		542
Selling, general and administrative	677		730		1,806		2,282
	$	1,173	$	940	$	3,047	$	3,319