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Mortgage Loans on Real Estate (Real Estate Owned) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Mortgage Loans on Real Estate [Abstract]      
Real estate owned at beginning of period $ 20,238 $ 22,844 $ 33,172
Real estate acquired in satisfaction of mortgage loans 0 14,555 8,217
Additions 121 0 626
Sales (12,322) (14,134) (17,358)
Impairments (1,297) (2,441) (1,195)
Depreciation (255) (586) (618)
Real estate owned at end of period $ 6,485 $ 20,238 $ 22,844