Quarterly report pursuant to Section 13 or 15(d)

RECLASSIFICATION FROM ACCUMULATED OTHER COMPREHENSIVE INCOME INTO NET INCOME (Details)

v3.10.0.1
RECLASSIFICATION FROM ACCUMULATED OTHER COMPREHENSIVE INCOME INTO NET INCOME (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Other-than-temporary impairment (OTTI) on securities $ 3,889 $ 1,509 $ 23,190 $ 8,736
Net Income (Loss) 195,477 239,721 995,677 714,282
Reclassification out of Accumulated Other Comprehensive Income        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Net Income (Loss) 32,626 (5,833) 89,885 (20,856)
Accumulated Net Investment Gain (Loss) Including Portion Attributable to Noncontrolling Interest | Reclassification out of Accumulated Other Comprehensive Income        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Gain (loss) on settlement of investments, net 28,737 (7,342) 66,695 (29,592)
Other-than-temporary impairment (OTTI) on securities $ 3,889 $ 1,509 $ 23,190 $ 8,736