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)

v3.6.0.2
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, 2016
USD ($)
Sep. 30, 2016
USD ($)
Jun. 30, 2016
USD ($)
Mar. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Sep. 30, 2015
USD ($)
Jun. 30, 2015
USD ($)
Mar. 31, 2015
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]                      
Other-than-temporary impairment losses $ 0 $ (1,015) $ (90) $ (717) $ 0 $ (238) $ (170) $ (127) $ (1,822) $ (535) $ (392)
Other than Temporary Impairment Losses, Investments, Number, Available-for-sale Securities                 4 2 3
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Market Value 111,504               $ 111,504    
Available-for-sale Securities, Weighted Average Cumulative Losses                 4.90%    
Available-for-sale Securities, Weighted Average Three-Month Prepayment Speed                 0.059    
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities, Portion Recognized in Earnings, Net, Qualitative Disclosures, Delinquency Rate                 23.00%    
Available-for-sale Securities, Weighted Average FICO Score                 660    
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held, Beginning Balance       $ (6,499)       $ (8,241) $ (6,499) $ (8,241) $ (9,467)
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, No Previous Impairment                 (1,307) (238) (91)
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses                 (515) (297) (301)
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Cash Flows                 1,387 0 464
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold                 1,328 2,277 1,154
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held, Ending Balance $ (5,606)       $ (6,499)       $ (5,606) $ (6,499) $ (8,241)