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Shareholders' Equity and Share-based Compensation (Tables) | 9 Months Ended
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Mar. 31, 2018
Share-based Compensation [Abstract] |
Summary of Stock Option Activities | Stock Options The Company did not grant any stock options during the nine months ended March 31, 2018. The number of options expected to vest is the result of applying the pre-vesting forfeiture rate assumption to total outstanding options. The following table summarizes the Company's stock option activities for the nine months ended March 31, 2018:
|  |  |  |  | Weighted |  |
|  |  | Weighted |  | Average |  |
|  |  | Average |  | Remaining |  |
| Number of |  | Exercise Price |  | Contractual |  | Aggregate
| Shares |  | Per Share |  | Term (in years) |  | Intrinsic Value
Outstanding at June 30, 2017 | 1,053,367 |  |  | $ | 10.98 |  |  | 4.43 |  | $ | 6,212,660 |
Exercised | (133,514 | ) |  | $ | 10.90 |  |  |  |  | $ | 818,624 |
Outstanding at March 31, 2018 | 919,853 |  |  | $ | 10.99 |  |  | 4.19 |  | $ | 4,521,710 |
Options vested and expected to vest | 919,821 |  |  | $ | 10.99 |  |  | 4.19 |  | $ | 4,521,497 |
Exercisable at March 31, 2018 | 916,936 |  |  | $ | 11.00 |  |  | 4.19 |  | $ | 4,502,312 |
Restricted Stock Units Activity | Restricted Stock Units ("RSUs") The following table summarizes the Company's RSU activities for the nine months ended March 31, 2018:
| 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, 2017 | 1,144,865 |  |  | $ | 14.11 |  |  | 1.76 |  | $ | 19,084,900 |
Granted | 745,071 |  |  | $ | 16.40 |  |  |  |  |
Vested | (473,657 | ) |  | $ | 13.58 |  |  |  |  |
Forfeited | (63,403 | ) |  | $ | 14.04 |  |  |  |  |
Nonvested at March 31, 2018 | 1,352,876 |  |  | $ | 15.56 |  |  | 1.95 |  | $ | 20,901,934 |
RSUs vested and expected to vest | 1,177,238 |  |  |  |  | 1.87 |  | $ | 18,188,334 |
The fair value of RSU is 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,
| 2018
Volatility rate | 45.32%
Risk-free interest rate | 1.4% - 1.7%
Expected term | 1.3 years
Dividend yield | 0%
Share-based Compensation, Allocation of Recognized Period Costs | Share-based Compensation Expense T he 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,
| 2018 |  | 2017 |  | 2018 |  | 2017
| (in thousands) |  | (in thousands)
Cost of goods sold | $ | 449 |  |  | $ | 222 |  |  | $ | 1,180 |  |  | $ | 622 |
Research and development | 361 |  |  | 395 |  |  | 1,340 |  |  | 1,138 |
Selling, general and administrative | 1,650 |  |  | 1,098 |  |  | 5,957 |  |  | 2,825 |
| $ | 2,460 |  |  | $ | 1,715 |  |  | $ | 8,477 |  |  | $ | 4,585 |

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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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