Fair Value Measures and Disclosures - Schedule of Carrying Amount and Estimated Fair Values (Details) - Payne Place - Mortgages - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Carrying Amount
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Mortgage notes payable- outstanding borrowings	$ 147,287,697	$ 101,315,236
Estimated Fair Value
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Mortgage notes payable- outstanding borrowings	$ 146,712,929	$ 100,698,311

Fair value portion of notes payable.

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 210.5-02.19,20,22)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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