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Note 5 - Income Taxes | 12 Months Ended
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Dec. 31, 2013
Income Tax Disclosure [Abstract] |
Income Tax Disclosure [Text Block] | 5. Income Taxes The components of the provision for income taxes consisted of the following:
(In thousands) |  | 2013 |  |  | 2012 |  |  | 2011 |
Current: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  | $ | 15,964 |  |  | $ | 12,728 |  |  | $ | 6,524 |
State |  |  | 1,889 |  |  |  | 587 |  |  |  | 1,362 |
|  |  | 17,853 |  |  |  | 13,315 |  |  |  | 7,886 |
Deferred: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  | 3,909 |  |  |  | 5,542 |  |  |  | 9,837 |
State |  |  | 394 |  |  |  | (720 | ) |  |  | 239 |
|  |  | 4,303 |  |  |  | 4,822 |  |  |  | 10,076 |
Total provision |  | $ | 22,156 |  |  | $ | 18,137 |  |  | $ | 17,962 |
The statutory federal income tax rate is reconciled to the effective income tax rate as follows:
|  | 2013 |  |  | 2012 |  |  | 2011 |
Statutory federal income tax rate |  |  | 35 | % |  |  | 35 | % |  |  | 35 | %
Per diem and other non-deductible expenses |  |  | 4 |  |  |  | 5 |  |  |  | 6 |
Increase in taxes arising from state income taxes, net of federal income tax benefit |  |  | 3 |  |  |  | - |  |  |  | 3 |
Other |  |  | - |  |  |  | - |  |  |  | (1 | )
Effective tax rate |  |  | 42 | % |  |  | 40 | % |  |  | 43 | %
Our effective income tax rate increased to 42.4% in 2013 from 39.9% in 2012 primarily due to a decrease in 2012 to our deferred income tax liability as a result of a change in income apportionment for several states. As of December 31, the net deferred tax liability consisted of the following:
(In thousands) |  | 2013 |  |  | 2012 |
Deferred tax assets: |  |  |  |  |  |  |  |
Reserves and accrued liabilities |  | $ | 6,051 |  |  | $ | 5,687 |
Other |  |  | 2,796 |  |  |  | 2,714 |
|  |  | 8,847 |  |  |  | 8,401 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
Depreciation |  |  | 116,438 |  |  |  | 111,794 |
Prepaid expenses |  |  | 2,631 |  |  |  | 2,526 |
|  |  | 119,069 |  |  |  | 114,320 |
Net deferred tax liability |  | $ | 110,222 |  |  | $ | 105,919 |
We have not provided a valuation allowance against deferred tax assets at December 31, 2013 or 2012. We believe the deferred tax assets will be realized principally through future reversals of existing taxable temporary differences (deferred tax liabilities) and future taxable income. Our reserves for unrecognized tax benefits were $340,000 as of December 31, 2013 and $281,000 as of December 31, 2012. The $59,000 increase in the amount reserved in 2013 relates to current period tax positions offset by the removal of the reserve relating to 2008. The amount reserved as of December 31, 2012 was added in 2008 through 2012 relating to current period tax positions. If recognized, $221,000 of the unrecognized tax benefits as of December 31, 2013 would impact our effective tax rate. No potential interest or penalties related to unrecognized tax benefits were recognized in our financial statements as of December 31, 2013. We do not expect the reserves for unrecognized tax benefits to change significantly within the next twelve months. The federal statute of limitations remains open for 2010 and forward. We file tax returns in numerous state jurisdictions with varying statutes of limitations.

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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 15 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 Reference 2: 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=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 Reference 4: 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 5: 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 6: 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 + Details
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