Investments in Unconsolidated Entities - Summary of Investments in Unconsolidated Entities (Details)		9 Months Ended
		Sep. 30, 2021 USD ($) Unit	Dec. 31, 2020 USD ($)
Schedule Of Equity Method Investments [Line Items]
Units | Unit		4,332
Carrying Value		$ 89,644,649	$ 106,878,570
Maximum Remaining Equity Commitment		$ 37,427,822
Vantage At Powdersville [Member] | Powdersville S C [Member]
Schedule Of Equity Method Investments [Line Items]
Units | Unit		288
Month Commitment Executed		November 2017
Construction Completion Date		2020-02
Carrying Value			12,295,801
Vantage At Stone Creek [Member] | Omaha, NE [Member]
Schedule Of Equity Method Investments [Line Items]
Units | Unit		294
Month Commitment Executed		March 2018
Construction Completion Date		2020-04
Carrying Value		$ 7,840,500	7,840,500
Vantage At Bulverde [Member] | Bulverde T X [Member]
Schedule Of Equity Method Investments [Line Items]
Units | Unit		288
Month Commitment Executed		March 2018
Construction Completion Date		2019-08
Carrying Value			10,570,000
Vantage At Germantown [Member] | Germantown, TN [Member]
Schedule Of Equity Method Investments [Line Items]
Units | Unit		288
Month Commitment Executed		June 2018
Construction Completion Date		2020-03
Carrying Value			12,425,000
Vantage At Murfreesboro [Member] | Murfreesboro, TN [Member]
Schedule Of Equity Method Investments [Line Items]
Units | Unit		288
Month Commitment Executed		September 2018
Construction Completion Date		2020-10
Carrying Value		$ 12,240,000	14,640,000
Vantage At Coventry [Member] | Omaha, NE [Member]
Schedule Of Equity Method Investments [Line Items]
Units | Unit		294
Month Commitment Executed		September 2018
Construction Completion Date		2021-02
Carrying Value		$ 9,007,435	9,007,435
Vantage At O'Connor [Member] | San Antonio, TX [Member]
Schedule Of Equity Method Investments [Line Items]
Units | Unit		288
Month Commitment Executed		October 2019
Construction Completion Date		2021-06
Carrying Value		$ 8,885,353	8,245,890
Vantage At Conroe [Member] | Conroe T X [Member]
Schedule Of Equity Method Investments [Line Items]
Units | Unit		288
Month Commitment Executed		April 2019
Construction Completion Date		2021-01
Carrying Value		$ 11,164,625	10,406,895
Vantage At Westover Hills [Member] | San Antonio, TX [Member]
Schedule Of Equity Method Investments [Line Items]
Units | Unit		288
Month Commitment Executed		January 2020
Construction Completion Date		2021-07
Carrying Value		$ 8,643,608	8,021,544
Vantage At Tomball [Member] | Tomball TX [Member]
Schedule Of Equity Method Investments [Line Items]
Units | Unit		288
Month Commitment Executed		August 2020
Carrying Value		$ 11,524,260	9,280,134
Vantage At Hutto | Hutto T X
Schedule Of Equity Method Investments [Line Items]
Units | Unit	[1]	288
Month Commitment Executed	[1]	November 2020
Carrying Value	[1]		3,163,676
Maximum Remaining Equity Commitment	[1]	$ 7,359,952
Vantage At San Marcos [Member] | San Marcos TX [Member]
Schedule Of Equity Method Investments [Line Items]
Units | Unit		288
Month Commitment Executed		November 2020
Carrying Value		$ 1,057,823	$ 981,695
Maximum Remaining Equity Commitment		$ 8,943,914
Vantage at Loveland [Member] | Loveland, CO [Member]
Schedule Of Equity Method Investments [Line Items]
Units | Unit		288
Month Commitment Executed		April 2021
Carrying Value		$ 7,970,362
Maximum Remaining Equity Commitment		$ 8,633,831
Vantage at Helotes [Member] | Helotes, TX [Member]
Schedule Of Equity Method Investments [Line Items]
Units | Unit		288
Month Commitment Executed		May 2021
Carrying Value		$ 6,932,720
Maximum Remaining Equity Commitment		$ 5,833,703
Vantage At Fair Oaks [Member] | Boerne, TX [Member]
Schedule Of Equity Method Investments [Line Items]
Units | Unit		288
Month Commitment Executed		June 2021
Carrying Value		$ 4,377,963
Maximum Remaining Equity Commitment		$ 6,656,422

[1] The property became a consolidated VIE effective during the second quarter of 2021 (Note 5).