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Taxes on Income (Tables) | 12 Months Ended
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Dec. 31, 2016
Taxes on Income [Abstract] |
Earnings Before Taxes | Earnings before taxes on income and details of the provision for taxes on income for the years ended December 31, 2016, 2015 and 2014 were as follows (in thousands):
|  | 2016 |  |  | 2015 |  |  | 2014 |
Earnings before taxes on income — United States |  | $ | 227,746 |  |  | $ | 361,712 |  |  | $ | 454,390 |
Provision for taxes on income: |  |  |  |  |  |  |  |  |  |  |  |
Federal: |  |  |  |  |  |  |  |  |  |  |  |
Current |  | $ | 28,919 |  |  | $ | 64,707 |  |  | $ | 81,953 |
Deferred |  |  | 49,685 |  |  |  | 59,582 |  |  |  | 72,920 |
State and local |  |  | 6,338 |  |  |  | 9,453 |  |  |  | 14,909 |
|  | $ | 84,942 |  |  | $ | 133,742 |  |  | $ | 169,782 |
Schedule of Effective Income Tax Rate Reconciliation | The Company’s provision for taxes on income varied from the statutory federal income tax rate for the years ended December 31, 2016, 2015 and 2014 due to the following:
|  | 2016 |  |  | 2015 |  |  | 2014 |
United States income tax statutory rate |  |  | 35.0 | % |  |  | 35.0 | % |  |  | 35.0 | %
State and local taxes, net of federal benefit |  |  | 1.8 |  |  |  | 1.7 |  |  |  | 2.2 |
Other – net |  |  | .5 |  |  |  | .3 |  |  |  | .2 |
|  |  | 37.3 | % |  |  | 37.0 | % |  |  | 37.4 | %
Schedule of Deferred Tax Assets and Liabilities | The tax effects of temporary differences that give rise to significant portions of the current deferred tax assets and non-current deferred tax assets and liabilities at December 31, 2016 and 2015 were as follows (in thousands):
|  | 2016 |  |  | 2015 |
Current deferred tax assets: |  |  |  |  |  |
Compensated absences |  | $ | 739 |  |  | $ | 829 |
Allowance for doubtful accounts |  |  | 2,534 |  |  |  | 3,288 |
Insurance accruals |  |  | 6,218 |  |  |  | 4,234 |
Other |  |  | 4,113 |  |  |  | 3,372 |
|  | $ | 13,604 |  |  | $ | 11,723 |
Non-current deferred tax assets and liabilities: |  |  |  |  |  |  |  |
Deferred tax assets: |  |  |  |  |  |  |  |
Postretirement health care benefits |  | $ | 2,234 |  |  | $ | 2,501 |
Insurance accruals |  |  | 2,910 |  |  |  | 3,410 |
Deferred compensation |  |  | 11,124 |  |  |  | 10,534 |
Unrealized loss on defined benefit plans |  |  | 28,832 |  |  |  | 25,245 |
Operating loss carryforwards |  |  | 7,846 |  |  |  | 5,188 |
Other |  |  | 21,622 |  |  |  | 20,702 |
Valuation allowances |  |  | (7,417) |  |  |  | (4,716) |
|  |  | 67,151 |  |  |  | 62,864 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
Property |  |  | (654,751 | ) |  |  | (604,737 | )
Deferred state taxes |  |  | (54,812 | ) |  |  | (53,542 | )
Pension benefits |  |  | (2,799 | ) |  |  | (8,471 | )
Goodwill and other intangibles |  |  | (51,551 | ) |  |  | (44,185 | )
Other |  |  | (22,295 | ) |  |  | (21,737 | )
|  |  | (786,208 | ) |  |  | (732,672 | )
|  | $ | (719,057 | ) |  | $ | (669,808 | )
Reconciliation of Liability for Unrecognized Tax Benefits | A reconciliation of the beginning and ending amount of the liability for unrecognized tax benefits for the years ended December 31, 2016, 2015 and 2014, is as follows (in thousands):
|  | 2016 |  |  | 2015 |  |  | 2014 |
Balance at beginning of year |  | $ | 1,958 |  |  | $ | 1,171 |  |  | $ | 949 |
Additions based on tax positions related to the current year |  |  | 187 |  |  |  | 339 |  |  |  | 470 |
Additions for tax positions of prior years |  |  | 867 |  |  |  | 785 |  |  |  | 39 |
Reductions for tax positions of prior years |  |  | (441 | ) |  |  | (337 | ) |  |  | (287 | )
Settlements |  |  | (552 | ) |  |  | — |  |  |  | — |
Balance at end of year |  | $ | 2,019 |  |  | $ | 1,958 |  |  | $ | 1,171 |

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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32687-109319 + Details
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- Definition Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -URI http://asc.fasb.org/extlink&oid=65882285&loc=SL6600010-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32840-109319 + Details
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