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Stockholders' Equity (Tables) | 3 Months Ended
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Sep. 30, 2019
Stockholders' Equity |
Schedule of stock-based compensation expense in the consolidated statement of operations | ​ We recorded stock-based compensation expense in the consolidated statement of operations as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended September 30, | ​
​ |  | 2018 |  | 2019 | ​
Cost of goods sold | ​ | $ | 207 | ​ | $ | 171 | ​
Selling, general and administrative | ​ |  | 5,111 | ​ |  | 6,085 | ​
Research and development | ​ |  | 145 | ​ |  | 160 | ​
Stock-based compensation expense | ​ | $ | 5,463 | ​ | $ | 6,416 | ​
​
Summary of stock option activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted Average | ​ | Weighted-Average | ​ | Aggregate
​ | ​ | Number of | ​ | Exercise | ​ | Remaining Contractual | ​ | Intrinsic Value
​ |  | Options |  | Price |  | Term |  | (in thousands)
Outstanding at June 30, 2019 |  | 515,884 |  | $ | 33.74 | ​ | ​ | ​ | ​ | ​
Granted |  | — |  | ​ | — | ​ | ​ | ​ | ​ | ​
Exercised |  | (167,306) |  | ​ | 16.92 | ​ | ​ | ​ | ​ | ​
Expired or forfeited |  | — |  | ​ | — | ​ | ​ | ​ | ​ | ​
Outstanding at September 30, 2019 |  | 348,578 |  | ​ | 41.81 |  | 2.8 years | ​ | $ | 20,829
Exercisable at September 30, 2019 |  | 314,261 | ​ | ​ | 37.82 |  | 2.2 years | ​ | ​ | 20,030
​
Summary of RSU award activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted-
​ | ​ | ​ | ​ | Average
​ |  | Shares |  | Fair Value
Nonvested at June 30, 2019 |  | 521,140 | ​ | $ | 73.97
Granted |  | 272,489 | ​ | ​ | 86.98
Vested |  | (360,866) | ​ | ​ | 68.11
Forfeited |  | (4,041) | ​ | ​ | 77.57
Nonvested at September 30, 2019 |  | 428,722 | ​ | ​ | 87.14
​

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + 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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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