Income Taxes - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) entity	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Number of subsidiaries taxed as taxable REIT | entity	2
Net operating loss carry forwards related to federal income taxes	$ 33,400
Net operating loss carryforwards no expiration period	42,300
Net operating loss carryforwards related to State income taxes	86,000
Interest expense carryforward with no expiration	4,500
Unrecognized tax benefits	0	$ 0	$ 0
Interest and penalties related to income taxes	0	0	0
Valuation allowance	26,624	$ 24,747	$ 8,361
Deferred tax assets valuation allowance change	$ 1,900
Federal | Maximum
Net operating loss carry forwards, expiration period	16 years
Federal | Minimum
Net operating loss carry forwards, expiration period	11 years
State | Maximum
Net operating loss carry forwards, expiration period	20 years
State | Minimum
Net operating loss carry forwards, expiration period	1 year