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STOCK-BASED COMPENSATION (Tables) | 12 Months Ended
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Jun. 30, 2015
Stock-based Compensation |
Schedule of stock-based compensation expense recorded in the condensed consolidated statements of operations | The Company recorded stock‑based‑compensation expense in the consolidated statement of operations as follows (in thousands):
|  | 2013 |  | 2014 |  | 2015 |
Cost of goods sold |  | $ | 820 |  | $ | 887 |  | $ | 1,037 |
Selling, general and administrative |  |  | 15,394 |  |  | 15,940 |  |  | 21,249 |
Research and development |  |  | 232 |  |  | 156 |  |  | 215 |
Stock based compensation expense |  |  | 16,446 |  |  | 16,983 |  |  | 22,501 |
Less: Related income tax benefit |  |  | 6,123 |  |  | 6,498 |  |  | 8,552 |
Stock based compensation expense, net |  | $ | 10,323 |  | $ | 10,485 |  | $ | 13,949 |
Schedule of weighted average assumptions used to determine the fair value calculations for stock options issued |
|  | 2013 |  | 2014 |  | 2015 |
Expected dividend |  | 0 | % | 0 | % | 0 | %
Risk-free interest rate |  | 0.6 | % | 1.3 | % | 1.5 | %
Expected volatility |  | 33.0 | % | 33.0 | % | 31.0 | %
Expected holding period (in years) |  | 4.3 |  | 4.5 |  | 4.5 |
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, 2012 |  | 1,059,397 |  |  | 23.01 |  |  |  |  |  |
Granted |  | 90,234 |  |  | 55.37 |  |  |  |  |  |
Exercised |  | (117,705) |  |  | 15.59 |  |  |  |  |  |
Expired or forfeited |  | (12,193) |  |  | 56.36 |  |  |  |  |  |
Outstanding at June 30, 2013 |  | 1,019,733 |  |  | 26.33 |  |  |  |  |  |
Granted |  | 10,294 |  |  | 70.59 |  |  |  |  |  |
Exercised |  | (1,169) |  |  | 39.97 |  |  |  |  |  |
Expired or forfeited |  | (5,867) |  |  | 54.06 |  |  |  |  |  |
Outstanding at June 30, 2014 |  | 1,022,991 |  |  | 26.60 |  |  |  |  |  |
Granted |  | 45,104 |  |  | 68.05 |  |  |  |  |  |
Exercised |  | (38,907) |  |  | 41.20 |  |  |  |  |  |
Expired or forfeited |  | (16,538) |  |  | 62.20 |  |  |  |  |  |
Outstanding at June 30, 2015 |  | 1,012,650 |  |  | 27.30 |  | 4.8 years |  | $ | 44,041 |
Exercisable at June 30, 2015 |  | 947,575 |  | $ | 24.80 |  | 4.5 years |  | $ | 43,577 |
Summary of restricted stock award and RSU award activity |
|  |  |  | Weighted- |
|  |  |  | Average |
|  | Shares |  | Fair Value |
Nonvested at June 30, 2012 |  | 580,468 |  | $ | 28.93 |
Granted |  | 296,334 |  |  | 57.29 |
Vested |  | (236,070) |  |  | 25.83 |
Forfeited |  | (13,608) |  |  | 43.03 |
Nonvested at June 30, 2013 |  | 627,124 |  | $ | 43.13 |
Granted |  | 322,275 |  |  | 63.73 |
Vested |  | (283,091) |  |  | 39.40 |
Forfeited |  | (4,908) |  |  | 49.22 |
Nonvested at June 30, 2014 |  | 661,400 |  | $ | 54.78 |
Granted |  | 281,163 |  |  | 64.68 |
Vested |  | (262,221) |  |  | 42.75 |
Forfeited |  | (20,436) |  |  | 55.62 |
Nonvested at June 30, 2015 |  | 659,906 |  | $ | 63.75 |

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