Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation of Statutory Federal Income Tax Amount (Details)

v3.20.4
Income Taxes - Reconciliation of Statutory Federal Income Tax Amount (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]                      
(Loss) income before federal income taxes                 $ (1,617,843) $ (2,009,921) $ 430,491
Expected income tax at statutory rate                 (339,747) (422,083) 90,403
State income taxes                 (14,696) (28,316) (511)
Other differences                 10,800 3,372 1,078
Change in valuation allowance due to current year activity                 350,933 439,464 (91,039)
Total income tax expense (benefit) provision $ 0 $ 0 $ 0 $ 7,290 $ 315,815 $ (144,047) $ (179,331) $ 0 $ 7,290 $ (7,563) $ (69)