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Federal and State Income Taxes (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Federal and State Income Taxes (Textual) [Abstract]
Unrecognized tax benefit	$ 0	$ 0
Interest expense or penalties with respect to income tax liabilities	0	0
Accrued liabilities for the payment of interest or penalties	0	0
Base year reserve for bad debts	$ 3,600,000

This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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