Notes Receivable - Components (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Notes receivable activities
Notes receivable loan loss reserve	$ (137)	$ (146)
Total	13,577	14,465
Mezzanine loan
Notes receivable activities
Mezzanine loan	7,461	8,445
Other loans
Notes receivable activities
Mezzanine loan	$ 6,253	$ 6,166

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Name:	us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant