The Company's IPO and Formation Transactions (Details Narrative) - IPO [Member]	May 19, 2019 USD ($) $ / shares shares
The Company's Initial Public Offering and Formation Transactions (Textual)
Sold IPO | shares	4,500,000
Public offering price | $ / shares	$ 17.00
Gross proceeds from initial public offering	$ 76,500,000
Net proceeds of initial public offering	71,100,000
Underwriting discounts	5,400,000
Repayment of outstanding indebtedness	$ 31,700,000
Formation transactions, description	The initial properties and other interests were contributed in exchange for 1,333,112 OP Units, 637,058 shares of Class A common stock, 27,206 shares of Voting Equivalency stock and $1.9 million of cash. In addition, the Operating Partnership purchased 81 post office properties (the "Acquisition Properties") in exchange for $26.9 million in cash, including approximately $1.0 million paid to Mr. Spodek, the Company's chief executive officer and a director for his non-controlling ownership in nine of the Acquisition Properties.
Other expenses	$ 6,400,000