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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2014
Income Tax Disclosure [Abstract] |
Reconciliation of Effective Tax Rate to Federal Statutory Tax Rate | The following is a reconciliation of our effective tax rate to the federal statutory tax rate:
| Years Ended December 31, |  |
| 2014 |  |  | 2013 |  |  | 2012 |  |
U.S. federal statutory rate |  | 35.0 |  | % |  | 35.0 |  | % |  | 35.0 |  | %
State taxes, net of federal benefit |  | 2.9 |  |  | 3.2 |  |  | 2.9 |  |
State incentives |  | (0.8 | ) |  | (0.6) |  |  | - |  |
State law changes |  | (0.9 | ) |  | 0.1 |  |  | 0.3 |  |
Nondeductible expenses |  | 0.9 |  |  | 0.8 |  |  | 0.5 |  |
Other |  | (0.1 | ) |  | 0.1 |  |  | 0.2 |  |
Net effective rate |  | 37.0 |  | % |  | 38.6 |  | % |  | 38.9 |  | %
Summary of Provision for Income Taxes | The following is a summary of our provision for income taxes (in thousands):
| Years Ended December 31, |
| 2014 |  |  | 2013 |  |  | 2012 |
Current |  |  |  |  |  |  |  |  |  |  |
Federal | $ | 5,939 |  |  | $ | 22,880 |  |  | $ | 30,375 |
State and local |  | 445 |  |  |  | 3,817 |  |  |  | 4,331 |
Foreign |  | 249 |  |  |  | 205 |  |  |  | 47 |
|  | 6,633 |  |  |  | 26,902 |  |  |  | 34,753 |
Deferred |  |  |  |  |  |  |  |  |  |  |
Federal |  | 23,600 |  |  |  | 15,920 |  |  |  | 7,865 |
State and local |  | 191 |  |  |  | 627 |  |  |  | 693 |
Foreign |  | (115 | ) |  |  | (4 | ) |  |  | (7 | )
|  | 23,676 |  |  |  | 16,543 |  |  |  | 8,551 |
Total provision | $ | 30,309 |  |  | $ | 43,445 |  |  | $ | 43,304 |
Summary of Deferred Tax Assets and Liabilities | The following is a summary of our deferred tax assets and liabilities (in thousands):
| December 31, |
| 2014 |  |  | 2013 |
Reserve for uncollectible accounts receivable | $ | 2,101 |  |  | $ | 2,398 |
Accrued compensation |  | 7,161 |  |  |  | 8,175 |
Other reserves |  | 2,036 |  |  |  | 2,356 |
Current deferred tax assets |  | 11,298 |  |  |  | 12,929 |
Accrued compensation |  | 6,829 |  |  |  | 5,919 |
Other reserves |  | 764 |  |  |  | 545 |
Operating loss carryforwards |  | 1,387 |  |  |  | 883 |
Less valuation allowance |  | (108 | ) |  |  | (108 | )
Non-current deferred tax assets |  | 8,872 |  |  |  | 7,239 |
Total deferred tax assets | $ | 20,170 |  |  | $ | 20,168 |
Prepaids | $ | (1,551 | ) |  | $ | (2,473 | )
Other receivables |  | (4,931 | ) |  |  | (4,630 | )
Current deferred tax liabilities |  | (6,482 | ) |  |  | (7,103 | )
Property and equipment |  | (67,726 | ) |  |  | (45,185 | )
Goodwill |  | (81,647 | ) |  |  | (79,889 | )
Non-current deferred tax liabilities |  | (149,373 | ) |  |  | (125,074 | )
Total deferred tax liabilities | $ | (155,855 | ) |  | $ | (132,177 | )
Unrecognized Tax Benefits | A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows (in thousands):
Balance at January 1, 2013 | $ | 783 |
Additions for tax positions taken in prior years |  | 17 |
Reductions for tax positions taken in prior years |  | (184 | )
Reductions as a result of a lapse of the applicable statute of limitations |  | (157 | )
Balance at December 31, 2013 | $ | 459 |
Additions for tax positions taken in prior years |  | 231 |
Additions for tax positions related to the current year |  | 587 |
Reductions as a result of a lapse of the applicable statute of limitations |  | (212 | )
Balance at December 31, 2014 | $ | 1,065 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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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=6907707&loc=d3e32687-109319 + Details
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- Definition Tabular disclosure of the change in unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 55 -Paragraph 217 -URI http://asc.fasb.org/extlink&oid=32707879&loc=d3e36027-109320 Reference 2: 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=6907707&loc=SL6600010-109319 + Details
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