Supplemental Information to Statements of Cash Flows - Schedule of Supplemental Information to Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Supplemental Cash Flows [Line Items]
Cash and cash equivalents	$ 58,376		$ 61,766
Restricted cash reserves	5,623		3,882
Cash, cash equivalents, and restricted cash reserves	63,999	$ 22,337	$ 65,648	$ 23,719
Rangers Sub I, LLC
Supplemental Cash Flows [Line Items]
Cash and cash equivalents		16,995
Restricted cash reserves		5,342
Cash, cash equivalents, and restricted cash reserves	63,999	22,337
Interest paid	1,818	1,631
Interest paid to a related party	666	1,008
Income taxes refunded	(2)	(39)
Operating Lease, Payments	1,309	1,949
Accrued capital expenditures	$ 6,298	$ 2,751