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Income Taxes (Narrative) (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Income Taxes [Abstract]      
Taxes receivable $ 1,400,000 $ 1,400,000  
Tax credits related to low income housing partnerships 896,000 879,000 841,000
Alaska film tax credits $ 398,000 $ 500,000  
U.S. Federal Statutory Tax Rate 35.00% 35.00% 35.00%