Fair Value Measurement - Fair Value of Company's Financial Assets and Liabilities (Details) - Fair Value - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Fair Value Measurements
Mortgage notes payable, net	$ 440,115	$ 415,183
Note receivable	2,191	1,389
Level 3
Fair Value Measurements
Mortgage notes payable, net	440,115	415,183
Note receivable	$ 2,191	$ 1,389

Fair value portion of an agreement for an unconditional promise by the maker to pay the holder a definite sum of money at a future date.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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