Income Taxes - Reconciliation of Tax Rate (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Reconciliation of statutory tax to effective tax
Federal statutory tax rate	$ (15,329)	$ 16,137
REIT and other non-taxable income	9,914	(16,160)
State income taxes	(1,779)	(6)
Federal benefit of state tax deduction	374	1
Other	91	362
Total income tax provision	$ (6,729)	$ 334
Reconciliation of statutory tax rate to effective tax rate
Federal statutory tax rate (as a percent)	21.00%	21.00%
REIT and other non-taxable income (as a percent)	(13.60%)	(21.00%)
State income taxes (as a percent)	2.40%
Federal benefit of state tax deduction (as a percent)	(0.50%)
Other (as a percent)	(0.10%)	0.40%
Effective tax rate (as a percent)	9.20%	0.40%