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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Unvested Restricted Stock Units Activity | The following table summarizes activity related to our RSUs under the Equity Incentive Plan for the nine months ended September 30, 2017:
| Number Outstanding |  | Weighted Average Grant Date Fair Value |  | Weighted Average Remaining Contractual Term (in years) |  | Aggregate Intrinsic Value (in thousands) (1)
Unvested as of January 1, 2017 | 1,873,737 |  |  | $ | 27.58 |  |  |  |  |
Granted | 743,926 |  |  | $ | 31.77 |  |  |  |  |
Vested | (858,470 | ) |  | $ | 26.85 |  |  |  |  |
Forfeited / Canceled | (146,769 | ) |  | $ | 31.15 |  |  |  |  |
Unvested as of September 30, 2017 | 1,612,424 |  |  | $ | 29.58 |  |  |  |  |
Expected to vest after September 30, 2017 | 1,555,391 |  |  | $ | 29.56 |  |  | 2.7 |  | $ | 55,979 |
(1) | The aggregate intrinsic value of unvested and expected to vest RSUs represents the total pretax intrinsic value (the fair value of the Company's stock on the last day of each period multiplied by the number of units) that would have been received by the holders had all RSUs vested. This amount changes based on the market price of the Company’s common stock.
Schedule of Stock Option Activity | The following table summarizes activity related to our stock options under the Equity Incentive Plan for the nine months ended September 30, 2017:
| Number Outstanding |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Term (in years) |  | Aggregate Intrinsic Value (in thousands) (1)
Balance as of January 1, 2017 | 2,623,217 |  |  | $ | 9.19 |  |  |  |  |
Exercised | (772,157 | ) |  | $ | 8.61 |  |  |  |  | $ | 18,256 |
Forfeited / Canceled | (15,800 | ) |  | $ | 24.12 |  |  |  |  |
Balance as of September 30, 2017 | 1,835,260 |  |  | $ | 9.31 |  |  | 1.8 |  | $ | 48,969 |
Exercisable as of September 30, 2017 | 1,835,260 |  |  | $ | 9.31 |  |  | 1.8 |  | $ | 48,969 |
Exercisable as of September 30, 2017 and expected to vest thereafter | 1,835,260 |  |  | $ | 9.31 |  |  | 1.8 |  | $ | 48,969 |
(1) | The aggregate intrinsic value of outstanding, exercisable and expected to vest options represents the total pretax intrinsic value (the difference between the fair value of the Company's stock on the last day of each period and the exercise price, multiplied by the number of options where the fair value exceeds the exercise price) that would have been received by the option holders had all option holders exercised their options as of the last day of the period indicated. This amount changes based on the market price of the Company’s common stock
Schedule Of Pre-Tax Stock-Based Compensation Expense | The following table summarizes the components of pre-tax stock-based compensation expense for our continuing operations (in thousands):
| Three Months Ended |  | Nine Months Ended
| September 30, |  | September 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
RSUs | $ | 5,139 |  |  | $ | 5,546 |  |  | $ | 17,576 |  |  | $ | 16,871 |
Stock options | — |  |  | 46 |  |  | 6 |  |  | 112 |
Total stock-based compensation expense | $ | 5,139 |  |  | $ | 5,592 |  |  | $ | 17,582 |  |  | $ | 16,983 |

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- Definition Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits. + 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 (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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)(2) -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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