Annual report pursuant to Section 13 and 15(d)

Available-for-Sale Securities, at Fair Value Other than Temporary Impairment, Credit Losses Recognized in Earnings (Details)

v3.3.1.900
Available-for-Sale Securities, at Fair Value Other than Temporary Impairment, Credit Losses Recognized in Earnings (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2015
USD ($)
Sep. 30, 2015
USD ($)
Jun. 30, 2015
USD ($)
Mar. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Sep. 30, 2014
USD ($)
Jun. 30, 2014
USD ($)
Mar. 31, 2014
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]                      
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities $ 0 $ (238) $ (170) $ (127) $ (180) $ 0 $ 0 $ (212) $ (535) $ (392) $ (1,662)
Other than Temporary Impairment Losses, Investments, Number, Available-for-sale Securities                 2 3 4
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Market Value $ 129,172               $ 129,172    
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Qualitative Disclosures, Weighted Average Cumulative Losses 11.10%               11.10%    
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Qualitative Disclosures, Weighted Average Three-Month Prepayment Speed 0.043               0.043    
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Delinquency Rate                 25.00%    
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Qualitative Disclosures, Weighted Average FICO Score 666               666    
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held, Beginning Balance       $ (8,241)       $ (9,467) $ (8,241) $ (9,467) $ (15,561)
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, No Previous Impairment                 (238) (91) 0
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses                 (297) (301) (1,662)
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Cash Flows                 0 464 1,677
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold                 2,277 1,154 6,079
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held, Ending Balance $ (6,499)       $ (8,241)       $ (6,499) $ (8,241) $ (9,467)