Income Taxes (Statutory Federal Income Tax Rate) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Difference between income tax benefit and statutory federal income tax rate
Federal income tax benefit	$ (4,368)	$ 35,112	$ 1,832
Federal income tax benefit, rate (percent)	(35.00%)	35.00%	35.00%
State income tax benefit, net of federal income tax effect	(91)	121	141
State income tax benefit, net of federal income tax effect, rate (percent)	0.00%	0.00%	3.00%
Valuation allowance	7,055	(34,191)	(894)
Valuation allowance, rate (percent)	57.00%	(34.00%)	(17.00%)
State deferred tax adjustment	(2,687)	0	0
State deferred tax adjustment (percent)	(22.00%)	0.00%	0.00%
Other	0	(856)	0
Other, rate (percent)	0.00%	(1.00%)	0.00%
Benefit (provision) applicable to income (loss) from continuing operations	$ (91)	$ 186	$ 1,079
Benefit (provision) applicable to income (loss) from continuing operations, rate (percent)	0.00%	0.00%	21.00%

Income Tax Reconciliation, State Deferred Tax Adjustment

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Income Tax Reconciliation, State Deferred Tax Adustment, Percent

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A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to changes in the valuation allowance for deferred tax assets.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate attributable to all other items not otherwise listed in the existing taxonomy.

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The portion of the difference between the effective income tax rate and domestic federal statutory income tax rate that can be explained by the state and local income tax expense or benefit, net of the federal tax benefit (expense) thereon, recorded during the period.

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The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to changes in the valuation allowance for deferred tax assets in the period.

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The portion of the difference, between total income tax expense or benefit as reported in the Income Statement for the year/accounting period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to all other items not otherwise listed in the existing taxonomy.

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