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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2015
Income Tax Disclosure [Abstract] |
Reconciliation of Unrecognized Income Tax Benefits | A reconciliation of the beginning and end of year unrecognized income tax benefits is as follows (in thousands):
| 2015 |  | 2014
Balance at beginning of year | $ | 5,203 |  |  | $ | 3,116 |
Additions based on tax positions related to the current year | 611 |  |  | 1,053 |
Additions based on tax positions related to prior years | — |  |  | 2,816 |
Reductions for tax positions of prior years | (1,053 | ) |  | (1,162 | )
Reductions for expired statute of limitations | — |  |  | (620 | )
Balance at end of year | $ | 4,761 |  |  | $ | 5,203 |
Schedule of Income Tax Provision | The income tax provision in the accompanying Consolidated Statements of Operations for the years ended December 31, 2015, 2014 and 2013 consisted of the following (in thousands):
| 2015 |  | 2014 |  | 2013
Current: |  |  |  |  |
Federal provision | $ | 94,405 |  |  | $ | 80,852 |  |  | $ | 60,449 |
State and local provisions | 21,320 |  |  | 14,532 |  |  | 2,897 |
Foreign provision | 831 |  |  | 2,396 |  |  | 7,083 |
| 116,556 |  |  | 97,780 |  |  | 70,429 |
Deferred | (10,300 | ) |  | 5,748 |  |  | 11,857 |
| $ | 106,256 |  |  | $ | 103,528 |  |  | $ | 82,286 |
Schedule of U.S. Statutory Income Tax Rates From Continuing Operations | Factors accounting for the variation from U.S. statutory income tax rates from continuing operations for the years ended December 31, 2015, 2014 and 2013 were as follows (in thousands):
| 2015 |  | 2014 |  | 2013
Federal income taxes at the statutory rate | $ | 97,588 |  |  | $ | 98,576 |  |  | $ | 81,448 |
Noncontrolling interests | (77 | ) |  | (1,667 | ) |  | (1,247 | )
State and local income taxes, net of federal tax benefits | 12,590 |  |  | 9,944 |  |  | 9,446 |
State tax reserves | 62 |  |  | (38 | ) |  | (6,529 | )
Permanent differences | 3,096 |  |  | 2,961 |  |  | 3,226 |
Domestic manufacturing deduction | (6,604 | ) |  | (5,008 | ) |  | (4,778 | )
Foreign income taxes (including UK statutory rate changes) | (361 | ) |  | (1,237 | ) |  | 1,183 |
Federal tax reserves | 14 |  |  | 62 |  |  | 263 |
Other | (52 | ) |  | (65 | ) |  | (726 | )
| $ | 106,256 |  |  | $ | 103,528 |  |  | $ | 82,286 |
Schedule of Deferred Tax Assets and Liabilities | The amounts recorded for the years ended December 31, 2015 and 2014 were as follows (in thousands):
| 2015 |  | 2014
Deferred income tax assets: |  |  |
Excess of amounts expensed for financial statement purposes over amounts deducted for income tax purposes: |  |  |
Insurance liabilities | $ | 58,582 |  |  | $ | 54,351 |
Pension liability | 6,255 |  |  | 10,142 |
Deferred compensation | 28,033 |  |  | 17,886 |
Other (including liabilities and reserves) | 28,562 |  |  | 31,828 |
Total deferred income tax assets | 121,432 |  |  | 114,207 |
Valuation allowance for deferred tax assets | (805 | ) |  | (2,024 | )
Net deferred income tax assets | 120,627 |  |  | 112,183 |
Deferred income tax liabilities: |  |  |
Costs capitalized for financial statement purposes and deducted for income tax purposes: |  |  |
Goodwill and identifiable intangible assets | (218,715 | ) |  | (216,126 | )
Other, primarily depreciation of property, plant and equipment | (22,510 | ) |  | (23,884 | )
Total deferred income tax liabilities | (241,225 | ) |  | (240,010 | )
Net deferred income tax liabilities | $ | (120,598 | ) |  | $ | (127,827 | )
Schedule of Income before Income Tax From Continuing Operations | Income before income taxes from continuing operations for the years ended December 31, 2015, 2014 and 2013 consisted of the following (in thousands):
| 2015 |  | 2014 |  | 2013
United States | $ | 264,867 |  |  | $ | 265,529 |  |  | $ | 219,300 |
Foreign | 13,956 |  |  | 16,116 |  |  | 13,409 |
| $ | 278,823 |  |  | $ | 281,645 |  |  | $ | 232,709 |

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