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Stock Benefit Plans | 6 Months Ended
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Dec. 31, 2012
Stock Benefit Plans | 9. Stock Benefit Plans Stock Incentive Plans The Company may grant incentive stock options (ISOs), nonstatutory stock options (NQSOs), restricted stock, restricted stock units, stock appreciation rights, performance-based stock awards and other forms of equity compensation, as well as performance cash awards under its 2010 Equity Incentive Plan (the 2010 Incentive Plan), or NQSOs and restricted stock units to non-employee directors under the 2010 Non-Employee Directors’ Stock Award Plan (the Directors’ Plan). To date, the Company has issued only ISOs, NQSOs and restricted stock units under the plans. As of December 31, 2012, 7,066,233 shares were reserved and 4,271,047 shares were available for issuance under the 2010 Incentive Plan, and 1,170,000 shares were reserved and 763,873 shares were available for issuance under the Directors’ Plan. Stock-Based Compensation The Company estimates the fair value of stock options at the date of grant using the Black-Scholes option-pricing model. Options are granted with an exercise price equal to the fair value of the common stock at the date of grant. The weighted average Black-Scholes model assumptions and the weighted average grant date fair value of employee stock options for the three and six months ended December 31, 2012 and 2011 were as follows:
|  | Three Months Ended December 31, |  |  | Six Months Ended December 31, |
|  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
Expected term (in years) |  |  | 4.6 |  |  |  | 4.6 |  |  |  | 4.6 |  |  |  | 4.6 |
Expected volatility |  |  | 54 | % |  |  | 56 | % |  |  | 55 | % |  |  | 55 | %
Expected dividend yield |  |  | 0.0 | % |  |  | 0.0 | % |  |  | 0.0 | % |  |  | 0.0 | %
Risk-free interest rate |  |  | 0.8 | % |  |  | 0.9 | % |  |  | 0.7 | % |  |  | 1.1 | %
Grant date fair value |  | $ | 3.07 |  |  | $ | 5.20 |  |  | $ | 3.97 |  |  | $ | 5.32 |
The fair value of restricted stock units is determined based on the closing price of the Company’s common stock on the grant date. Compensation expense is amortized net of estimated forfeitures on a straight-line basis over the requisite service period of the stock-based compensation awards.

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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 SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 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 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 93-6 -Paragraph 53 -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 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64, 65, A240 -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 8: 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 + Details
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