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
Mar. 31, 2016
USD ($)
Mar. 31, 2015
USD ($)
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 $ (717) $ (127)
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 $ 113,320  
Available-for-sale Securities, Weighted Average Cumulative Losses 12.30%  
Available-for-sale Securities, Weighted Average Three-Month Prepayment Speed 0.043  
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Delinquency Rate 24.40%  
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 $ (6,499) $ (8,241)
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, No Previous Impairment (292) 0
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses (425) (127)
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Cash Flows 0 0
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold 596 1,916
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held, Ending Balance $ (6,620) $ (6,452)