Quarterly report pursuant to Section 13 or 15(d)

RECLASSIFICATION FROM ACCUMULATED OTHER COMPREHENSIVE INCOME INTO NET INCOME - Summary of Amounts Reclassified out of Accumulated Other Comprehensive Income into Net Income (Details)

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RECLASSIFICATION FROM ACCUMULATED OTHER COMPREHENSIVE INCOME INTO NET INCOME - Summary of Amounts Reclassified out of Accumulated Other Comprehensive Income into Net Income (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Other-than-temporary impairment (OTTI) on securities $ 1,765 $ 1,574 $ 7,838 $ 3,294
Total reclassifications 2,444 (22,880) (7,234) (27,936)
Accumulated Net Investment Gain (Loss) Including Portion Attributable to Noncontrolling Interest [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Gain on settlement of investments, net 679 (24,454) (15,072) (31,230)
Other-than-temporary impairment (OTTI) on securities $ 1,765 $ 1,574 $ 7,838 $ 3,294