Mortgage Note and Revolving Credit Facility - Schedule of Mortgage Note and Revolving Credit Facility (Details) - USD ($)	9 Months Ended
Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Principal Balance Outstanding	$ 187,500,000
Weighted Average Interest Rate	2.17%
Deferred financing costs, net	$ (1,143,000)	$ 0
Mortgage notes and revolving credit facility, net	186,357,000	67,700,000
Revolving Credit Facility
Debt Instrument [Line Items]
Current borrowing capacity	6,600,000
Revolving Credit Facility \| Minimum
Debt Instrument [Line Items]
Line of credit facility, increase limit	100,000,000
Revolving Credit Facility \| Maximum
Debt Instrument [Line Items]
Line of credit facility, increase limit	150,000,000
Mortgages
Debt Instrument [Line Items]
Principal Balance Outstanding	$ 98,000,000
Weighted Average Interest Rate	2.56%
Line of Credit \| Revolving Credit Facility
Debt Instrument [Line Items]
Principal Balance Outstanding	$ 89,500,000	$ 67,700,000
Weighted Average Interest Rate	1.73%	2.00%
Maximum facility size	$ 100,000,000	$ 75,000,000
Line of Credit \| Revolving Credit Facility \| Federal funds rate
Debt Instrument [Line Items]
Variable interest rate	0.50%
Line of Credit \| Revolving Credit Facility \| LIBOR
Debt Instrument [Line Items]
Variable interest rate	1.00%

Line of Credit Facility, Accordion Feature, Increase Limit

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Weighted average interest rate of debt outstanding.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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