Stockholders' Equity | 9 Months Ended |
Sep. 30, 2013 |
Stockholders' Equity | ' |
Stockholders' Equity | ' |
6. Stockholders’ Equity |
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Treasury Stock |
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In November 2011, the Company announced that the Board of Directors authorized the Company to purchase up to $50 million of its outstanding common stock. During the nine months ended September 30, 2012, the Company purchased 221,763 shares of stock for $8,710,000 (including commissions) under this share repurchase program. This share repurchase program was completed in January 2012. |
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In August 2012, the Company announced that the Board of Directors authorized the Company to purchase up to an additional $50 million of its outstanding common stock. During the nine months ended September 30, 2013, the Company purchased 402,955 shares of stock for $23,562,000 (including commissions) under this share repurchase program. |
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Stock-Based Compensation |
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The Company accounts for stock-based compensation under Topic 718—Stock Compensation (Topic 718), which requires compensation costs related to share-based transactions, including employee stock options, to be recognized in the financial statements based on fair value. |
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Stock Options |
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Under Topic 718, the fair value of each option award is estimated on the date of grant using the Black-Scholes option pricing model. |
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The following table summarizes the assumptions relating to the Company’s stock options for the three and nine months ended September 30, 2013 and 2012, respectively: |
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| | Three Months | | Nine Months | |
| | Ended | | Ended | |
| | September 30, | | September 30, | |
| | 2013 | | 2012 | | 2013 | | 2012 | |
Dividend yield | | 0 | % | 0% | | 0% | | 0% | |
Volatility | | 47 | % | 53% | | 47%-54% | | 52%-55% | |
Risk-free interest rate | | 1.71 | % | 0.80%-0.89% | | 1.02%-1.71% | | 0.80%-1.27% | |
Expected term, in years | | 6.08 | | 6.02-6.08 | | 5.50-6.08 | | 5.27-6.55 | |
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The Company granted 47,097 and 214,572 stock options during the three months ended September 30, 2013 and 2012, respectively, and 179,068 and 1,425,481 stock options during the nine months ended September 30, 2013 and 2012, respectively. The Company recorded stock-based compensation expense related to stock options of $2,873,000 and $3,562,000 for three months ended September 30, 2013 and 2012, respectively, and $9,442,000 and $13,461,000 for the nine months ended September 30, 2013 and 2012, respectively. |
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Restricted Stock Units |
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The Company began granting restricted stock units (“RSUs”) to its employees in November 2010. The cost of RSUs is determined using the fair value of the Company’s common stock on the date of grant. RSUs typically vest and become exercisable annually, based on a one to four year total vesting term. Stock-based compensation expense is amortized using a graded vesting attribution method over the requisite service period. |
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The Company granted 23,561 and 24,358 RSUs during the three months ended September 30, 2013 and 2012, respectively, and 202,227 and 120,155 RSUs during the nine months ended September 30, 2013 and 2012, respectively. The Company recorded stock-based compensation expense related to RSUs of $1,797,000 and $1,348,000, respectively, for the three months ended September 30, 2013 and 2012, respectively, and $3,099,000 and $2,626,000 for the nine months ended September 30, 2013 and 2012, respectively. |
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Excess Tax Benefits |
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Topic 718 requires the benefits of tax deductions in excess of recognized compensation expense to be reported as a financing cash flow, rather than as an operating cash flow. For the three months ended September 30, 2013 and 2012, the Company recorded $4,132,000 and $1,802,000, respectively, of excess tax benefits from stock-based compensation and $5,351,000 and $9,750,000, for the nine months ended September 30, 2013 and 2012, respectively. |