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Income Taxes | 12 Months Ended
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Dec. 31, 2011
Income Taxes [Abstract] |
Income Taxes | Note 5. Income Taxes The components of the provision for income taxes are as follows:
|  | Year Ended December 31, |
(In thousands) |  | 2011 |  |  | 2010 |  |  | 2009 |
Current: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  | $ | 27,470 |  |  | $ | 34,255 |  |  | $ | 7,910 |
State |  |  | 9,796 |  |  |  | 6,896 |  |  |  | 3,605 |
|  |  | 37,266 |  |  |  | 41,151 |  |  |  | 11,515 |
Deferred: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  | 39,934 |  |  |  | 6,695 |  |  |  | 9,752 |
State |  |  | 3,414 |  |  |  | 929 |  |  |  | 1,027 |
|  |  | 43,348 |  |  |  | 7,624 |  |  |  | 10,779 |
Total provision for income taxes |  | $ | 80,614 |  |  | $ | 48,775 |  |  | $ | 22,294 |
The following is a reconciliation of the U.S. statutory federal income tax rates with our effective income tax rates for 2011, 2010 and 2009:
|  | Year Ended December 31, |
(In thousands) |  | 2011 |  |  | 2010 |  |  | 2009 |
Tax provision at statutory rate on income before income taxes |  | $ | 77,029 |  |  | $ | 43,549 |  |  | $ | 20,008 |
State income taxes, net of federal benefit |  |  | 7,480 |  |  |  | 5,002 |  |  |  | 2,359 |
Meals and entertainment disallowance |  |  | 721 |  |  |  | 616 |  |  |  | 521 |
Tax credits |  |  | (4,453 | ) |  |  | (744 | ) |  |  | (783 | )
Other, net |  |  | (163 | ) |  |  | 352 |  |  |  | 189 |
Total provision for income taxes |  | $ | 80,614 |  |  | $ | 48,775 |  |  | $ | 22,294 |
Deferred tax assets and liabilities consist of the following:
|  | December 31, |
(In thousands) |  | 2011 |  |  | 2010 |
Deferred tax assets: |  |  |  |  |  |  |  |
Claims and insurance reserves |  | $ | 33,424 |  |  | $ | 30,823 |
Allowance for doubtful accounts |  |  | 2,827 |  |  |  | 2,642 |
Accrued vacation |  |  | 9,339 |  |  |  | 8,332 |
Deferred compensation |  |  | 14,441 |  |  |  | 12,204 |
Other |  |  | 11,036 |  |  |  | 6,652 |
Total deferred tax assets |  |  | 71,067 |  |  |  | 60,653 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
Depreciation |  |  | (174,353 | ) |  |  | (122,950 | )
Unrecognized revenue |  |  | (6,995 | ) |  |  | (6,084 | )
Employee benefits |  |  | (3,421 | ) |  |  | (2,544 | )
Other |  |  | (1,748 | ) |  |  | (1,177 | )
Total deferred tax liabilities |  |  | (186,517 | ) |  |  | (132,755 | )
Net deferred tax liability |  | $ | (115,450 | ) |  | $ | (72,102 | )
Our net deferred tax liability consists of the following:
|  | December 31, |
(In thousands) |  | 2011 |  |  | 2010 |
Current deferred tax asset |  | $ | 19,466 |  |  | $ | 18,666 |
Noncurrent deferred tax liability |  |  | (134,916 | ) |  |  | (90,768 | )
Net deferred tax liability |  | $ | (115,450 | ) |  | $ | (72,102 | )
We are subject to U.S. federal income tax, as well as income tax of multiple state tax jurisdictions. We remain open to examination by the Internal Revenue Service for tax years 2008 through 2011. We remain open to examination by state tax jurisdictions for tax years 2007 through 2011. Changes in our liability for unrecognized tax benefits could affect our effective tax rate, if recognized, but we do not expect any material changes within the next twelve months. Interest and penalties related to uncertain income tax positions, which are immaterial, are recorded in our Provision for Income Taxes on our Statement of Operations.

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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 136, 172 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43, 44, 45, 46, 47, 48, 49 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 Reference 6: 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 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690 + Details
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