Manager and Other Related Parties - Formation Loan Transactions (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Formation Loan Transactions [Abstract]
Balance at January 1,	$ 3,812	$ 3,948
Payments received from RMC	(405)	(119)
Early withdrawal penalties applied	(19)	(17)
Balance at December 31,	$ 3,388	$ 3,812

Amount of an agreement for an unconditional promise by an owner to pay limited liability company (LLC) a definite sum of money at a future date.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=125520817&loc=d3e70261-108054

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Name:	us-gaap_NotesReceivableByOwnerToLimitedLiabilityCompanyLLC
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant