Note 6 - Real Estate - Portfolio of Properties in Units (Details) - EDI Real Estate, LLC [Member]	Jun. 30, 2022	Dec. 31, 2021
Real Estate Occupied or Available to Rent, Held For Investment [Member]
Number of Real Estate Properties	0	1
Vacant Real Estate Being Prepared or to Be Prepared to Market to Tenants, Held For Investment [Member]
Number of Real Estate Properties	2	2
Real Estate Held for Investment [Member]
Number of Real Estate Properties	2	3