Leases (Tables)

12 Months Ended

Dec. 31, 2021

Leases [Abstract]

Summary of Concentration of Risk Percentage of Tenants

For the year ended December 31, 2021 and 2020, we had four tenants that each account for more than 10% of our rental revenue as indicated below:

	2021	2020
Pratt and Whitney – Huntsville, AL property	17.8%	21.0%
General Services Administration – Walmer Ave.    Norfolk, VA property	22.9%	25.3%
Maersk Shipping – Walmer Ave. Norfolk, VA property	9.7%	10.7%
PRA Holding – Corporate Blvd. Norfolk, VA property	18.9%	21.8%

Summary of Future Minimum Rental Cash Payments Due

The following table presents future minimum rental cash payments due to the Company over the next five calendar years and thereafter as of December 31, 2021:

	Future Minimum Rent Payments
2022	$	3,796,000
2023		3,427,000
2024		3,432,000
2025		3,296,000
2026		3,211,000
Thereafter		6,298,000
	$	23,460,000