Income Taxes (Details Textual) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Jan. 31, 2012	Dec. 31, 2010
Income Taxes (Textual) [Abstract]
Received Tax refund			$ 31,615
Cumulative deferred state taxable net operating losses	5,614	5,664
Reduction in tax expenses		2,972
Reserve Uncertain tax positions	537	888		4,248
Interest and Penalties recognized	0	0
Liabilities for accrued interest and penalties	$ 0	$ 0

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards.

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The amount of the additional liability or refund received or expected based on a final settlement with a taxing authority.

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The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations.

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The sum of the amounts of estimated penalties and interest recognized in the period arising from income tax examinations.

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The sum of the differences 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 all income tax settlements for the period.

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The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

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