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)

v3.19.2
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, 2019
USD ($)
Jun. 30, 2018
USD ($)
Jun. 30, 2019
USD ($)
position
Jun. 30, 2018
USD ($)
position
Debt Securities, Available-for-sale [Abstract]        
Other-than-temporary impairment losses $ (4,800) $ (200) $ (5,100) $ (300)
Other than Temporary Impairment Losses, Investments, Number, Available-for-sale Securities | position     8 2
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Market Value 215,000   $ 215,000  
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Weighted Average Cumulative Losses     4.90%  
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Weighted Average Three-Month Prepayment Speed     0.068  
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Delinquency Rate     16.90%  
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Weighted Average FICO Score     687  
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]        
Cumulative credit loss at beginning of period (4,528) (6,489) $ (6,865) $ (6,395)
Other-than-temporary impairments not previously recognized (4,304) (85) (4,403) (85)
Increases related to other-than-temporary impairments on securities with previously recognized other-than-temporary impairments (544) (89) (651) (183)
Decreases related to other-than-temporary impairments on securities paid down 0 0 1,703 0
Decreases related to other-than-temporary impairments on securities sold 0 0 840 0
Cumulative credit loss at end of period $ (9,376) $ (6,663) $ (9,376) $ (6,663)