Share-Based Compensation and Cash-Based Incentive Compensation - Summary of Incentive Compensation Expense under Share-Based Payment Arrangements and Related Tax Benefit (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2015 |
Jun. 30, 2014 |
Jun. 30, 2015 |
Jun. 30, 2014 |
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| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||||
| Share-based compensation | $ 2,892 | $ 3,887 | $ 5,708 | $ 7,644 |
| Tax benefit computed at the statutory rate | 1,012 | 1,360 | 1,998 | 2,675 |
| Restricted Shares | ||||
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||||
| Share-based compensation | 90 | 84 | 183 | 183 |
| Restricted Stock Units (RSUs) | ||||
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||||
| Share-based compensation | $ 2,802 | 3,625 | 5,619 | 6,161 |
| Common Stock | ||||
| Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||||
| Share-based compensation | $ 178 | $ (94) | $ 1,300 | |
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- Definition The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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