Note 7 - Leases (Details Textual)	1 Months Ended
	Jan. 31, 2023	Jun. 30, 2023	May 04, 2021
Minimum [Member]
Lessor, Operating Lease, Term of Contract (Year)		1 year
Maximum [Member]
Lessor, Operating Lease, Term of Contract (Year)		10 years
Ground Leases at SGR, OPF, and BNA [Member] | Minimum [Member]
Lessee, Operating Lease, Term of Contract (Year)		26 years
Ground Leases at SGR, OPF, and BNA [Member] | Maximum [Member]
Lessee, Operating Lease, Term of Contract (Year)		74 years
ADS Expansion Parcels, Lease Agreement[Member]
Number of Additional Parcels of Land	2
DVT Lease [Member]
Lessee, Operating Lease, Term of Contract (Year)			40 years