Summary of Significant Accounting Policies - Schedule of Recurring Assets and Liabilities Measured at Fair Value (Detail) - USD ($) |
Dec. 31, 2019 |
Dec. 31, 2018 |
---|---|---|
Level 1 [Member] | Unsecured Notes [Member] | ||
Derivatives Fair Value [Line Items] | ||
Debt instruments measured at fair value | $ (25,390,000) | |
Level 2 [Member] | Interest Rate Caps [Member] | ||
Derivatives Fair Value [Line Items] | ||
Interest rate cap | $ 4,504 | 94,697 |
Level 2 [Member] | Interest Rate Swap [Member] | ||
Derivatives Fair Value [Line Items] | ||
Interest rate cap | (2,064,709) | (984,677) |
Level 2 [Member] | Mortgage Loans [Member] | ||
Derivatives Fair Value [Line Items] | ||
Debt instruments measured at fair value | $ (363,229,617) | $ (357,279,949) |