Investment in Unconsolidated Entities - Additional Information (Details) - USD ($)	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Schedule Of Equity Method Investments [Line Items]
Partnership's investment in an unconsolidated entity	$ 60,494,767		$ 39,608,927
Vantage At Panama City Beach [Member]
Schedule Of Equity Method Investments [Line Items]
Partnership's investment in an unconsolidated entity				$ 11,700,000
Vantage At Stone Creek [Member]
Schedule Of Equity Method Investments [Line Items]
Partnership's investment in an unconsolidated entity		$ 7,100,000
Vantage At Bulverde [Member]
Schedule Of Equity Method Investments [Line Items]
Partnership's investment in an unconsolidated entity		$ 8,600,000
Vantage at Germantown [Member]
Schedule Of Equity Method Investments [Line Items]
Partnership's investment in an unconsolidated entity	$ 10,400,000