| Income Tax Disclosure [Abstract] | Period [Axis] |
|---|
2016-01-01 - 2016-12-31 |
|---|
Income Tax Disclosure [Abstract] | |
Reconciliation of the Statutory Federal Income Tax Rate to the Effective Income Tax Rate | A reconciliation of the statutory federal income tax rate to the effective income tax rate for the years ended December 31, 2016, 2015 and 2014 is as follows: | | | | | | | | | | | 2016 | | 2015 | | 2014 | Statutory federal income tax rate | 35.0 | % | | 35.0 | % | | 35.0 | % | State income tax rate, net of federal income tax effect | 4.5 |
| | 4.4 |
| | 3.5 |
| Section 199 deductions | (2.6 | ) | | (1.9 | ) | | (1.7 | ) | Other, net | 2.5 |
| | (0.8 | ) | | 1.9 |
| Effective income tax rate | 39.4 | % | | 36.7 | % | | 38.7 | % |
|
Components of Income Tax Expense | The components of income tax expense for the years ended December 31, 2016, 2015 and 2014 are as follows (in thousands): | | | | | | | | | | | | | | 2016 | | 2015 | | 2014 | Current | | | | | | Federal | $ | 107,083 |
| | $ | 103,344 |
| | $ | 95,946 |
| State | 22,646 |
| | 23,939 |
| | 24,327 |
| Total current | 129,729 |
| | 127,283 |
| | 120,273 |
| Deferred | | | | | | Federal | (7,633 | ) | | (6,381 | ) | | 1,955 |
| State | (1,212 | ) | | (1,901 | ) | | (2,245 | ) | Total deferred | (8,845 | ) | | (8,282 | ) | | (290 | ) | Total | $ | 120,884 |
| | $ | 119,001 |
| | $ | 119,983 |
|
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Deferred Income Tax Assets and Liabilities | At December 31, 2016 and 2015, the net deferred income tax asset/(liability) is as follows (in thousands): | | | | | | | | | | 2016 | | 2015 | Deferred tax assets | $ | 38,688 |
| | $ | 33,564 |
| Deferred tax liabilities | (35,194 | ) | | (38,873 | ) | Net deferred income tax asset /(liability) | $ | 3,494 |
| | $ | (5,309 | ) |
The tax effect of temporary differences giving rise to significant portions of deferred tax assets and liabilities at December 31, 2016 and 2015 are presented below (in thousands): | | | | | | | | | | 2016 | | 2015 | Deferred tax assets: | | | | Intangibles | $ | 32 |
| | $ | 38 |
| Accrued compensation and benefits | 16,317 |
| | 15,406 |
| Property, equipment and technology, net | 619 |
| | 645 |
| Investment in affiliates | 4,668 |
| | 7,264 |
| Other | 17,052 |
| | 10,211 |
| Total deferred tax assets | 38,688 |
| | 33,564 |
| Deferred tax liabilities: | | | | Property, equipment and technology, net | (32,312 | ) | | (35,859 | ) | Investment in affiliates | (1,724 | ) | | (1,707 | ) | Prepaid | (1,145 | ) | | (1,303 | ) | Other | (13 | ) | | (4 | ) | Total deferred tax liabilities | (35,194 | ) | | (38,873 | ) | Net deferred tax assets/(liabilities) | $ | 3,494 |
| | $ | (5,309 | ) |
|
Reconciliation of the Beginning and Ending Uncertain Tax Positions | A reconciliation of the beginning and ending uncertain tax positions, excluding interest and penalties, is as follows (in thousands): | | | | | | | | | | | | | | 2016 | | 2015 | | 2014 | Balance as of January 1 | $ | 31,903 |
| | $ | 35,429 |
| | $ | 26,745 |
| Gross increases on tax positions in prior period | 8,801 |
| | 70 |
| | 2,828 |
| Gross decreases on tax positions in prior period | (608 | ) | | (4,245 | ) | | (1,053 | ) | Gross increases on tax positions in current period | 3,591 |
| | 1,891 |
| | 8,113 |
| Lapse of statute of limitations | (1,816 | ) | | (1,242 | ) | | (1,204 | ) | Balance as of December 31 | $ | 41,871 |
| | $ | 31,903 |
| | $ | 35,429 |
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