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STOCK BASED COMPENSATION (Tables) | 6 Months Ended
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Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock-based compensation expense | The following table shows total stock-based compensation expense included in the Condensed Consolidated Statements of Operations for the three and six months ended December 31, 2013 and 2012 (in thousands):
| Three Months Ended December 31, |  | Six Months Ended December 31,
| 2013 |  | 2012 |  | 2013 |  | 2012
Cost of sales | $ | 148 |  |  | $ | 104 |  |  | $ | 292 |  |  | $ | 185 |
Research and development | 553 |  |  | 401 |  |  | 1,049 |  |  | 667 |
Sales, general and administrative | 721 |  |  | 388 |  |  | 1,248 |  |  | 697 |
| $ | 1,422 |  |  | $ | 893 |  |  | $ | 2,589 |  |  | $ | 1,549 |
Summary of option activity for the company's stock incentive plans | The following is a summary of option activity for the Company’s stock incentive plans for the six months ended December 31, 2013:
| Common Stock Options Outstanding
| Number of Shares |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life (Years) |  | Aggregate Intrinsic Value
|  |  |  |  |  |  | (In thousands)
Balance, June 30, 2013 | 3,614,262 |  |  | $ | 3.07 |  |  |  |  |
Exercised | (455,980 | ) |  | 2.20 |  |  |  |  |
Forfeitures and cancellations | (107,318 | ) |  | 10.55 |  |  |  |  |
Balance, December 31, 2013 | 3,050,964 |  |  | $ | 2.93 |  |  | 5.65 |  | $ | 131,270 |
Vested and expected to vest as of December 31, 2013 | 3,016,040 |  |  | $ | 2.85 |  |  | 5.61 |  | $ | 130,033 |
Vested and exercisable as of December 31, 2013 | 2,421,183 |  |  | $ | 1.30 |  |  | 4.97 |  | $ | 108,131 |
Fair value of employee stock options | For the three and six months ended December 31, 2012, the fair value of employee stock options was estimated using the following weighted average assumptions:
| Three And Six Months Ended December 31, 2012
Expected term | 6.1 years |
Expected volatility | 52 | %
Risk-free interest rate | 0.8 | %
Expected dividend yield | — |
Weighted average grant date fair value | $ | 5.37 |
Activity of RSUs | The following table summarizes the activity of the RSUs made by the Company:
| Number of Shares |  | Weighted Average Grant Date Fair Value
Non-vested RSUs, June 30, 2013 | 744,906 |  |  | $ | 14.74 |
RSUs granted | 77,033 |  |  | 32.48 |
RSUs vested | (100,431 | ) |  | 16.09 |
RSUs canceled | (188,905 | ) |  | 14.98 |
Non-vested RSUs, December 31, 2013 | 532,603 |  |  | $ | 16.96 |

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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 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: 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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F Reference 4: 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=6415400&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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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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