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Income Taxes (Schedule Of Deferred Tax Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | --- | ---
Income Tax Disclosure [Abstract] |  |  |
Net operating loss carryforward | $ 1,513 | $ 40,880 | $ 20,967
Oil and gas property basis difference | 0 | 0 | 32,054
FASB ASC 718 compensation expense | 762 | 520 | 347
Investment in pass through entities | 0 | 78 | 722
AMT credit | 1,643 | 1,000 | 693
Non-oil and gas property basis difference | 0 | 103 | 279
Charitable contributions carryover | 5 | 3 | 0
Unrealized gain on hedging activities | 3,836 | 0 | 0
Foreign tax credit carryforwards | 2,074 | 0 | 0
State net operating loss carryover | 4,315 | 6,410 | 0
Total deferred tax assets | 14,148 | 48,994 | 55,062
Valuation allowance for deferred tax assets | (4,629) | (12,347) | (54,434)
Deferred tax assets, net of valuation allowance | 9,519 | 36,647 | 628
Oil and gas property basis difference | 15,049 | 35,637 | 0
Investment in pass through entities | 3,618 | 0 | 0
Non-oil and gas property basis difference | 227 | 0 | 0
Investment in nonconsolidated affiliates | 9,232 | 0 | 0
Unrealized gain on hedging activities | 0 | 10 | 0
Total deferred tax liabilities | 28,126 | 35,647 | 0
Net deferred tax asset (liability) | $ (18,607) | $ 1,000 | $ 628

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- Definition The tax effect as of the balance sheet date of the estimated future tax effects attributable to the difference between the tax basis of oil and gas assets and the basis of oil and gas assets computed in accordance with generally accepted accounting principles. The difference in basis, attributable to different capitalization of costs, depreciation, or amortization methodologies, will impact future taxable income when such basis difference is realized. + References No definition available. + Details
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