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Stockholders' Equity | 6 Months Ended
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Dec. 31, 2020
Stockholders' Equity |
Stockholders' Equity | 9. Stockholders’ Equity ​ Stock-based Compensation ​ As of December 31, 2020, we maintained the Amended and Restated 2012 Incentive Award Plan (the "2012 Plan ") and the Amended and Restated 2006 Equity Participation Plan ("2006 Plan") as stock-based employee compensation plans. No further grants may be made under the 2006 Plan. The 2012 Plan and the 2006 Plan are collectively referred to as the "OSI Plans." ​ We recorded stock-based compensation expense in the consolidated statements of operations as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three Months Ended December 31, |  | Six Months Ended December 31,
​ | ​ | 2019 |  | 2020 |  | 2019 |  | 2020
Cost of goods sold | ​ | $ | 156 | ​ | $ | 194 | ​ | $ | 328 | ​ | $ | 373
Selling, general and administrative | ​ |  | 5,548 | ​ | ​ | 5,384 | ​ |  | 11,633 | ​ |  | 11,168
Research and development | ​ |  | 140 | ​ | ​ | 135 | ​ |  | 299 | ​ |  | 280
Stock-based compensation expense | ​ | $ | 5,844 | ​ | $ | 5,713 | ​ | $ | 12,260 | ​ | $ | 11,821
​ As of December 31, 2020, total unrecognized compensation cost related to share-based compensation grants under the OSI Plans were estimated at $0.6 million for stock options and $24.6 million for RSUs. We expect to recognize these costs over a weighted average period of 2.3 years with respect to the stock options and 1.9 years for grants of RSUs. ​ The following summarizes stock option activity during the six months ended December 31, 2020: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Average | ​ | Weighted-Average | ​ | Aggregate
​ | ​ | Number of | ​ | Exercise | ​ | Remaining Contractual | ​ | Intrinsic Value
​ |  | Options |  | Price |  | Term |  | (in thousands)
Outstanding at June 30, 2020 |  | 326,304 |  | $ | 44.41 |  | ​ | ​ | ​ | ​
Granted |  | 22,171 | ​ | ​ | 82.17 | ​ | ​ | ​ | ​ | ​
Exercised |  | (77,532) | ​ | ​ | 30.70 | ​ | ​ | ​ | ​ | ​
Expired or forfeited |  | (2,710) | ​ | ​ | 78.71 | ​ | ​ | ​ | ​ | ​
Outstanding at December 31, 2020 |  | 268,233 | ​ | ​ | 51.14 | ​ | 3.1 years | ​ | $ | 11,392
Exercisable at December 31, 2020 | ​ | 227,849 | ​ | ​ | 44.77 |  | 2.0 years | ​ | ​ | 11,039
​ The following summarizes RSU award activity during the six months ended December 31, 2020: ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted-
​ | ​ | ​ | ​ | Average
​ |  | Shares |  | Fair Value
Nonvested at June 30, 2020 |  | 423,590 | ​ | $ | 88.68
Granted |  | 337,778 | ​ | ​ | 80.32
Vested |  | (304,420) | ​ | ​ | 85.95
Forfeited |  | (7,150) | ​ | ​ | 85.08
Nonvested at December 31, 2020 |  | 449,798 | ​ | $ | 84.31
​ In December 2020, our shareholders authorized an increase of 1.65 million shares for the 2012 Plan resulting in a maximum pool of 7.1 million shares. As of December 31, 2020, there were approximately 2.1 million shares available for grant under the 2012 Plan. Under the terms of the 2012 Plan, RSUs and restricted stock granted from the pool of shares available for grant reduce the pool by 1.87 shares for each award granted. RSUs and restricted stock forfeited and returned to the pool of shares available for grant increase the pool by 1.87 shares for each award forfeited. ​ We granted 81,621 and 136,242 performance-based RSUs during the six months ended December 31, 2019 and 2020, respectively. These performance based RSU awards are contingent on the achievement of certain performance metrics. The payout related to these awards can range from zero to 280% of the original number of shares or units awarded. Compensation cost associated with these performance based RSUs are recognized based on the estimated number of shares that we ultimately expect will vest. If the estimated number of shares to vest is revised in the future, then stock based compensation expense will be adjusted accordingly. ​ Stock Repurchase Program ​ In April 2020, the Board of Directors authorized a share repurchase program of up to 1,000,000 shares of common stock. In August 2020, the Board of Directors increased the maximum number of shares to 3,000,000 shares authorized under the stock repurchase program. This program does not expire unless our Board of Directors acts to terminate the program. The timing and actual numbers of shares purchased depends on a variety of factors, including stock price, general business and market conditions and other investment opportunities. Repurchases may be made from time to time under the program through open-market purchases or privately-negotiated transactions at our discretion. Upon repurchase, the shares are restored to the status of authorized but unissued shares and we record them in our consolidated financial statements as a reduction in the number of shares of common stock issued and outstanding. ​ During the six months ended December 31, 2020, we repurchased 320,136 shares of our common stock, all of which occurred in the first quarter of the fiscal year. ​ Dividends ​ We have not paid any cash dividends since the consummation of our initial public offering in 1997 and we do not currently intend to pay any cash dividends in the foreseeable future. Our Board of Directors will determine the payment of future cash dividends, if any. Certain of our current bank credit facilities restrict the payment of cash dividends and future borrowings may contain similar restrictions.

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(e)(1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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