Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity Schedule of Accumulated Other Comprehensive Income (Loss) (Details)

v3.20.2
Stockholders' Equity Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Equity [Abstract]    
Unrealized gains $ 722,380 $ 730,043
Unrealized losses (2,040) (40,643)
Accumulated other comprehensive income $ 720,340 $ 689,400