Income Taxes - Schedule of Components of Income Tax Expense/(Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current:
Federal	$ 105,294	$ 44,088	$ 10,012
State	13,640	9,957	879
Deferred:
Federal	5,091	81,852	114,059
State	9,266	21,705	6,942
Total	$ 133,291	$ 157,602	$ 131,892