Quarterly report pursuant to Section 13 or 15(d)

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

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Available-for-Sale Securities, at Fair Value Other than Temporary Impairment, Credit Losses Recognized in Earnings (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2015
USD ($)
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 $ (90) $ (170) $ (807) $ (297)
Other than Temporary Impairment Losses, Investments, Number, Available-for-sale Securities     3 1
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Market Value 113,530   $ 113,530  
Available-for-sale Securities, Weighted Average Cumulative Losses     12.50%  
Available-for-sale Securities, Weighted Average Three-Month Prepayment Speed     0.071  
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Delinquency Rate     23.30%  
Available-for-sale Securities, Weighted Average FICO Score     671  
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held, Beginning Balance (6,620) (6,452) $ (6,499) $ (8,241)
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, No Previous Impairment 0 0 (292) 0
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses (90) (170) (515) (297)
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Cash Flows 0 0 0 0
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold 0 0 596 1,916
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held, Ending Balance $ (6,710) $ (6,622) $ (6,710) $ (6,622)