Income Taxes - Reconciliation of Statutory Federal Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Statutory federal tax expense (benefit)	$ 25,388	$ 3,177	$ 35,155
State income tax expense (benefit), net of federal tax expense (benefit)	943	300	264
REIT income not subject to tax	(21,522)	(1,828)	(35,573)
Other	363	93	335
Income tax expense (benefit)	$ 5,172	$ 1,742	$ 181