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Income Taxes (Schedule of Income Tax Expense (Benefit)) (Details) (USD $)
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3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
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Mar. 31, 2013
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Mar. 31, 2012
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Dec. 31, 2012
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Dec. 31, 2011
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| Current: | ||||
| Federal | ||||
| State | ||||
| Current Income tax expense (benefit) | ||||
| Deferred: | ||||
| Federal | ||||
| State | ||||
| Deferred Income tax expense (benefit) | ||||
| Total Income tax expense (benefit) | ||||