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Income Taxes and Distributions (Details 4) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Valuation Allowance        
Additions $ 9,234,000 $ 0 $ 317,000  
Deductions 0 (4,732,000) 0  
Valuation allowance $ 12,199,000 $ 2,965,000 $ 7,697,000 $ 7,380,000