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STOCK BASED COMPENSATION | 6 Months Ended
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Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
STOCK BASED COMPENSATION | STOCK BASED COMPENSATION Stock-Based Compensation Plans The Company’s 2010 Equity Incentive Plan and 2005 Equity Incentive Plan are described in its Annual Report. As of December 31, 2013, the Company had 5,620,284 authorized shares available for future issuance under all of its stock incentive plans. Stock-based Compensation 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 |
Stock Options 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 |
During the three months ended December 31, 2013 and 2012, the aggregate intrinsic value of options exercised under the Company’s stock incentive plans was $3.8 million and $185,000, respectively, as determined as of the date of option exercise. During the six months ended December 31, 2013 and 2012, the aggregate intrinsic value of options exercised under the Company’s stock incentive plans was $13.7 million and $363,000, respectively, as determined as of the date of option exercise. As of December 31, 2013, the Company had unrecognized compensation costs of $2.6 million related to stock options which the Company expects to recognize over a weighted-average period of 2.6 years. Future option grants will increase the amount of compensation expense to be recorded in these periods. The Company estimates the fair value of employee stock options using the Black-Scholes option pricing model. The fair value of employee stock options is being amortized on a straight-line basis over the requisite service period of the awards. The Company did not grant any employee stock options during the three and six months ended December 31, 2013. 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 |
Restricted Stock Units (“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 |
The intrinsic value of RSUs vested in the three months ended December 31, 2013 and 2012 was $1.5 million and $142,000, respectively. The intrinsic value of RSUs vested in the six months ended December 31, 2013 and 2012 was $2.9 million and $233,000, respectively. As of December 31, 2013, there was unrecognized compensation costs related to RSUs of $7.0 million which the Company expects to recognize over a weighted average period of 3.2 years.

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -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 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 + Details
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