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Income Taxes (Tables) | 12 Months Ended
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Dec. 31, 2012
Income Tax Disclosure [Abstract] |
Income Tax Expense (Benefit) |
| Year Ended December 31,
| 2012 |  | 2011 |  | 2010
Current: |  |  |  |  |
Federal | $ | (8,463 | ) |  | $ | 2,147 |  |  | $ | 1,664 |
State | 275 |  |  | 676 |  |  | 1,494 |
Total current income tax (benefit) expense | $ | (8,188 | ) |  | $ | 2,823 |  |  | $ | 3,158 |
Deferred: |  |  |  |  |
Federal | $ | (1,035 | ) |  | $ | (3,714 | ) |  | $ | (573 | )
State | 18 |  |  | (326 | ) |  | 3 |
Total deferred income tax (benefit) expense | $ | (1,017 | ) |  | $ | (4,040 | ) |  | $ | (570 | )
Total income tax (benefit) expense | $ | (9,205 | ) |  | $ | (1,217 | ) |  | $ | 2,588 |
Deferred Tax Assets And Liabilities |
| December 31,
| 2012 |  | 2011
Deferred tax assets: |  |  |
Current: |  |  |
Other current assets | $ | 348 |  |  | $ | 351 |
Other | 8 |  |  | 8 |
Total current deferred tax asset | 356 |  |  | 359 |
Net operating loss carryforwards | 5,206 |  |  | 2,363 |
Total long-term deferred tax asset | 5,206 |  |  | 2,363 |
Valuation allowances | (543 | ) |  | (428 | )
Total deferred tax assets | $ | 5,019 |  |  | $ | 2,294 |
Deferred tax liabilities: |  |  |
Current: |  |  |
Other | $ | (658 | ) |  | $ | (211 | )
Long-term: |  |  |
Fixed assets | (4,914 | ) |  | (5,744 | )
Intangible assets | (8,896 | ) |  | (6,805 | )
Total long-term liability | (13,810 | ) |  | (12,549 | )
Total deferred tax liabilities | $ | (14,468 | ) |  | $ | (12,760 | )
Total net deferred tax liability | $ | (9,449 | ) |  | $ | (10,466 | )
Federal Statutory Income Tax Rate To Income Before Income Taxes |
| Year Ended December 31,
| 2012 |  | 2011 |  | 2010
Income (loss) before income taxes | $ | 87,114 |  |  | $ | 50,032 |  |  | $ | (47,953 | )
Partnership (income) loss not subject to tax | (89,797 | ) |  | (60,304 | ) |  | 47,357 |
Loss subject to income taxes | $ | (2,683 | ) |  | $ | (10,272 | ) |  | $ | (596 | )
Tax benefit at federal statutory rate | $ | (939 | ) |  | $ | (3,595 | ) |  | $ | (209 | )
State income taxes, net of federal benefit | 460 |  |  | 123 |  |  | 583 |
Effects of unrecognized tax positions, federal and state | (8,205 | ) |  | 1,964 |  |  | 1,909 |
Return to provision, federal and state | (166 | ) |  | 72 |  |  | 257 |
Other | (355 | ) |  | 219 |  |  | 48 |
Income tax (benefit) expense | $ | (9,205 | ) |  | $ | (1,217 | ) |  | $ | 2,588 |
Effective tax rate on income (loss) before income taxes | (1) |  | (1) |  | (1)
(1) | Income tax expense is related to taxable income generated by our corporate subsidiaries and Texas Margin Tax. Due to the income tax benefit in 2012 and 2011 and the loss before income taxes in 2010, the effective tax rate as a percentage of our total income (loss) before income taxes is not meaningful.
Reconciliation Of The Beginning And Ending Balances Of Unrecognized Tax Positions |
Balance at January 1, 2010 | $ | 4,332 |
Additions based on tax positions related to current year | 1,909 |
Balance as of December 31, 2010 | 6,241 |
Additions based on tax positions related to current year | 1,964 |
Balance as of December 31, 2011 | 8,205 |
Reversal of uncertain tax positions due to tax audit settlements | (8,205 | )
Balance as of December 31, 2012 | $ | — |

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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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