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STOCK BASED COMPENSATION (Tables) | 3 Months Ended
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Sep. 30, 2012
Stock-based compensation expense | The following table shows total stock-based compensation expense included in the Condensed Consolidated Statements of Operations for the months ended September 30, 2012 and 2011 (in thousands):
|  | Three Months Ended September 30, |
|  | 2012 |  |  | 2011 |
Cost of sales |  | $ | 81 |  |  | $ | 6 |
Research and development |  |  | 266 |  |  |  | 116 |
Sales, general and administrative |  |  | 309 |  |  |  | 229 |
|  | $ | 656 |  |  | $ | 351 |
Option activity for Company's stock incentive plans | The following is a summary of option activity for the Company’s stock incentive plans for the three months ended September 30, 2012:
|  | 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, 2012 |  |  | 3,347,445 |  |  |  | 1.45 |  |  |  |  |  |  |  |  |
Granted |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Exercised |  |  | (29,705 | ) |  |  | 3.42 |  |  |  |  |  |  |  |  |
Forfeitures and cancellations |  |  | (11,803 | ) |  |  | 5.53 |  |  |  |  |  |  |  |  |
Balance, September 30, 2012 |  |  | 3,305,937 |  |  | $ | 1.42 |  |  |  | 6.34 |  |  | $ | 34,809 |
Vested and expected to vest as of September 30, 2012 |  |  | 3,274,056 |  |  | $ | 1.39 |  |  |  | 6.32 |  |  | $ | 34,570 |
Vested and exercisable as of September 30, 2012 |  |  | 2,563,713 |  |  | $ | 0.63 |  |  |  | 5.83 |  |  | $ | 28,903 |
Fair value of employee stock options | 2011, the fair value of employee stock options was estimated using the following weighted average assumptions:
|  | Three Months Ended September 30, 2011 |
Expected term |  |  | 6.1 years |
Expected volatility |  |  | 49 | %
Risk-free interest rate |  |  | 1.8 | %
Expected dividend yield |  |  | — |
Weighted average grant date fair value |  | $ | 4.03 |
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, 2012 |  |  | 453,620 |  |  | $ | 9.42 |
RSUs granted |  |  | 257,500 |  |  |  | 13.86 |
RSUs vested |  |  | (7,290 | ) |  |  | 12.14 |
RSUs cancelled |  |  | (10,000 | ) |  |  | 28.78 |
Non-vested RSUs, September 30, 2012 |  |  | 693,830 |  |  | $ | 10.76 |

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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 Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph g(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F Reference 3: 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 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 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: 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=6793087&loc=d3e301413-122809 + 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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- 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=6415400&loc=d3e5070-113901 + Details
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