Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Summary of differences between total income tax expense statutory federal income tax rate
Statutory rate of 34% applied to pre-tax loss	$ 1,611	$ (7,767)	$ (6,495)
Effect of state and local income taxes, net of federal tax benefit	237	(1,142)	(955)
Valuation allowance (decrease) increase	(715)	58,322	0
Other	(782)	786	(829)
Total expense (benefit)	$ 351	$ 50,199	$ (8,279)
Effective tax rate	7.40%	(219.76%)	43.34%

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 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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- Definition

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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- Definition

The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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