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Income Taxes Components of current and deferred income tax expense (benefit) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Current provision (benefit) |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | $ 5,725 | $ (8,523) | $ (71,796)
State and other |  |  |  |  |  |  |  |  | (1,596) | (14,068) | (28,116)
Current Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | 4,129 | (22,591) | (99,912)
Deferred provision (benefit) |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | (1,833,580) | 0 | 0
State and other |  |  |  |  |  |  |  |  | (262,843) | 0 | 0
Deferred tax assets, net | 2,086,754 |  |  |  | 0 |  |  |  | 2,086,754 | 0 |
Deferred Income Tax Expense (Benefit) |  |  |  |  |  |  |  |  | (2,096,423) | 0 | 0
Income tax expense (benefit) | $ 12,367 | $ (2,107,162) | $ 1,913 | $ 588 | $ (7,529) | $ (10,727) | $ (2,510) | $ (1,825) | $ (2,092,294) | $ (22,591) | $ (99,912)

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