Notes Payable (Detail) - Schedule of Debt	9 Months Ended
	Sep. 30, 2020 USD ($)
Less unamortized loan issuance costs [Member]
Less unamortized loan issuance costs	$ (1,257,000)
Total Investment in real estate and fixed assets [Member]
Current Loan Balance	158,191,000
MVP Cincinnati Race Street, LLC [Member]
Original Debt Amount	2,550,000
Current Loan Balance	$ 2,550,000
Lender	Multiple
Term	1 year
Interest Rate	7.50%
Loan Maturity	Apr. 30, 2021
MVP Wildwood NJ Lot, LLC [Member]
Original Debt Amount	$ 1,000,000
Current Loan Balance	$ 1,000,000
Lender	Tigges Construction Co.
Term	1 year
Interest Rate	7.50%
Loan Maturity	Apr. 30, 2021
The Parking REIT D&O Insurance [Member]
Original Debt Amount	$ 1,185,000
Monthly Payment (approx.)	150,000
Current Loan Balance	$ 744,000
Lender	MetaBank
Term	1 year
Interest Rate	3.60%
Loan Maturity	Feb. 28, 2021
Minneapolis Venture [Member]
Original Debt Amount	$ 2,000,000
Current Loan Balance	$ 2,000,000
Lender	Multiple
Term	1 year
Interest Rate	8.00%
Loan Maturity	Apr. 30, 2021
MVP Raider Park Garage, LLC [Member]
Original Debt Amount	$ 7,400,000
Current Loan Balance	$ 7,400,000
Lender	LoanCore
Term	2 years
Loan Maturity	Dec. 09, 2020
MVP New Orleans Rampart, LLC [Member]
Original Debt Amount	$ 5,300,000
Current Loan Balance	$ 5,300,000
Lender	LoanCore
Term	2 years
Loan Maturity	Dec. 09, 2020
MVP Hawaii Marks Garage, LLC [Member]
Original Debt Amount	$ 13,500,000
Current Loan Balance	$ 13,500,000
Lender	LoanCore
Term	2 years
Loan Maturity	Dec. 09, 2020
MVP Milwaukee Wells, LLC [Member]
Original Debt Amount	$ 2,700,000
Current Loan Balance	$ 2,700,000
Lender	LoanCore
Term	2 years
Loan Maturity	Dec. 09, 2020
MVP Indianapolis City Park, LLC [Member]
Original Debt Amount	$ 7,200,000
Current Loan Balance	$ 7,200,000
Lender	LoanCore
Term	2 years
Loan Maturity	Dec. 09, 2020
MVP Indianapolis WA Street, LLC [Member]
Original Debt Amount	$ 3,400,000
Current Loan Balance	$ 3,400,000
Lender	LoanCore
Term	2 years
Loan Maturity	Dec. 09, 2020
MVP Clarksburg Lot [Member]
Original Debt Amount	$ 476,000
Current Loan Balance	$ 476,000
Lender	Multiple
Term	1 year
Interest Rate	7.50%
Loan Maturity	May 21, 2021
MCI 1372 Street [Member]
Original Debt Amount	$ 574,000
Current Loan Balance	$ 574,000
Lender	Multiple
Term	1 year
Interest Rate	7.50%
Loan Maturity	May 27, 2021
MVP Milwaukee Old World [Member]
Original Debt Amount	$ 771,000
Current Loan Balance	$ 771,000
Lender	Multiple
Term	1 year
Interest Rate	7.50%
Loan Maturity	May 27, 2021
MVP Milwaukee Clybourn [Member]
Original Debt Amount	$ 191,000
Current Loan Balance	$ 191,000
Lender	Multiple
Term	1 year
Interest Rate	7.50%
Loan Maturity	May 27, 2021
SBA PPP Loan [Member]
Original Debt Amount	$ 348,000
Monthly Payment (approx.)	14,700
Current Loan Balance	$ 348,000
Lender	Small Business Administration
Term	2 years
Interest Rate	1.00%
Loan Maturity	Oct. 22, 2022
MVP Memphis Poplar [Member]
Original Debt Amount	$ 1,800,000
Current Loan Balance	$ 1,800,000
Lender	LoanCore
Term	5 years
Interest Rate	5.38%
Loan Maturity	Mar. 06, 2024
MVP St. Louis [Member]
Original Debt Amount	$ 3,700,000
Current Loan Balance	$ 3,700,000
Lender	LoanCore
Term	5 years
Interest Rate	5.38%
Loan Maturity	Mar. 06, 2024
Mabley Place Garage, LLC [Member]
Original Debt Amount	$ 9,000,000
Monthly Payment (approx.)	44,000
Current Loan Balance	$ 8,052,000
Lender	Barclays
Term	10 years
Interest Rate	4.25%
Loan Maturity	Dec. 06, 2024
MVP Houston Saks Garage, LLC [Member]
Original Debt Amount	$ 3,650,000
Monthly Payment (approx.)	20,000
Current Loan Balance	$ 3,189,000
Lender	Barclays Bank PLC
Term	10 years
Interest Rate	4.25%
Loan Maturity	Aug. 06, 2025
Minneapolis City Parking, LLC [Member]
Original Debt Amount	$ 5,250,000
Monthly Payment (approx.)	29,000
Current Loan Balance	$ 4,694,000
Lender	American National Insurance, of NY
Term	10 years
Interest Rate	4.50%
Loan Maturity	May 01, 2026
MVP Bridgeport Fairfield Garage, LLC [Member]
Original Debt Amount	$ 4,400,000
Monthly Payment (approx.)	23,000
Current Loan Balance	$ 3,965,000
Lender	FBL Financial Group, Inc.
Term	10 years
Interest Rate	4.00%
Loan Maturity	Aug. 01, 2026
West 9th Properties II, LLC [Member]
Original Debt Amount	$ 5,300,000
Monthly Payment (approx.)	30,000
Current Loan Balance	$ 4,808,000
Lender	American National Insurance Co.
Term	10 years
Interest Rate	4.50%
Loan Maturity	Nov. 01, 2026
MVP Fort Worth Taylor, LLC [Member]
Original Debt Amount	$ 13,150,000
Monthly Payment (approx.)	73,000
Current Loan Balance	$ 11,959,000
Lender	American National Insurance, of NY
Term	10 years
Interest Rate	4.50%
Loan Maturity	Dec. 01, 2026
MVP Detroit Center Garage, LLC [Member]
Original Debt Amount	$ 31,500,000
Monthly Payment (approx.)	194,000
Current Loan Balance	$ 29,212,000
Lender	Bank of America
Term	10 years
Interest Rate	5.52%
Loan Maturity	Feb. 01, 2027
MVP St Louis Washington, LLC [Member]
Original Debt Amount	$ 1,380,000
Monthly Payment (approx.)	8,000
Current Loan Balance	$ 1,341,000
Lender	KeyBank
Term	10 years
Interest Rate	4.90%
Loan Maturity	May 01, 2027
St Paul Holiday Garage, LLC [Member]
Original Debt Amount	$ 4,132,000
Monthly Payment (approx.)	24,000
Current Loan Balance	$ 4,013,000
Lender	KeyBank
Term	10 years
Interest Rate	4.90%
Loan Maturity	May 01, 2027
Cleveland Lincoln Garage, LLC [Member]
Original Debt Amount	$ 3,999,000
Monthly Payment (approx.)	23,000
Current Loan Balance	$ 3,884,000
Lender	KeyBank
Term	10 years
Interest Rate	4.90%
Loan Maturity	May 01, 2027
MVP Denver Sherman, LLC [Member]
Original Debt Amount	$ 286,000
Monthly Payment (approx.)	2,000
Current Loan Balance	$ 277,000
Lender	KeyBank
Term	10 years
Interest Rate	4.90%
Loan Maturity	May 01, 2027
MVP Milwaukee Arena Lot, LLC [Member]
Original Debt Amount	$ 2,142,000
Monthly Payment (approx.)	12,000
Current Loan Balance	$ 2,081,000
Lender	KeyBank
Term	10 years
Interest Rate	4.90%
Loan Maturity	May 01, 2027
MVP Denver Sherman 1935, LLC [Member]
Original Debt Amount	$ 762,000
Monthly Payment (approx.)	4,000
Current Loan Balance	$ 740,000
Lender	KeyBank
Term	10 years
Interest Rate	4.90%
Loan Maturity	May 01, 2027
MVP Louisville Broadway Station, LLC [Member]
Original Debt Amount	$ 1,682,000
Current Loan Balance	$ 1,682,000
Lender	Cantor Commercial Real Estate
Term	10 years
Interest Rate	5.03%
Loan Maturity	May 06, 2027
MVP Whitefront Garage, LLC [Member]
Original Debt Amount	$ 6,454,000
Current Loan Balance	$ 6,454,000
Lender	Cantor Commercial Real Estate
Term	10 years
Interest Rate	5.03%
Loan Maturity	May 06, 2027
MVP Houston Preston Lot, LLC [Member]
Original Debt Amount	$ 1,627,000
Current Loan Balance	$ 1,627,000
Lender	Cantor Commercial Real Estate
Term	10 years
Interest Rate	5.03%
Loan Maturity	May 06, 2027
MVP Houston San Jacinto Lot, LLC [Member]
Original Debt Amount	$ 1,820,000
Current Loan Balance	$ 1,820,000
Lender	Cantor Commercial Real Estate
Term	10 years
Interest Rate	5.03%
Loan Maturity	May 06, 2027
St. Louis Broadway, LLC [Member]
Original Debt Amount	$ 1,671,000
Current Loan Balance	$ 1,671,000
Lender	Cantor Commercial Real Estate
Term	10 years
Interest Rate	5.03%
Loan Maturity	May 06, 2027
St. Louis Seventh & Cerre, LLC [Member]
Original Debt Amount	$ 2,057,000
Current Loan Balance	$ 2,057,000
Lender	Cantor Commercial Real Estate
Term	10 years
Interest Rate	5.03%
Loan Maturity	May 06, 2027
MVP Indianapolis Meridian Lot, LLC [Member]
Original Debt Amount	$ 938,000
Current Loan Balance	$ 938,000
Lender	Cantor Commercial Real Estate
Term	10 years
Interest Rate	5.03%
Loan Maturity	May 06, 2027
MVP Preferred Parking, LLC [Member]
Original Debt Amount	$ 11,330,000
Current Loan Balance	$ 11,330,000
Lender	Key Bank
Term	10 years
Interest Rate	5.02%
Loan Maturity	Aug. 01, 2027