Note 9 - Real Estate - Portfolio of Properties in Units (Details)	Dec. 31, 2019	Dec. 31, 2018
EDI Real Estate, LLC [Member] | Real Estate Occupied or Available to Rent, Held For Investment [Member]
Number of Real Estate Properties	6	6
EDI Real Estate, LLC [Member] | Vacant Real Estate Being Prepared or to Be Prepared to Market to Tenants, Held For Investment [Member]
Number of Real Estate Properties		3
EDI Real Estate, LLC [Member] | Real Estate Held For Investment [Member]
Number of Real Estate Properties	6	9
EDI Real Estate, LLC [Member] | Real Estate, Units Held For Sale [Member]
Number of Real Estate Properties	2
EDI Real Estate, LLC [Member] | Commercial Real Estate, Held For Resale [Member]
Number of Real Estate Properties	3	3
EDI Real Estate, LLC [Member] | Real Estate Held For Sale, Vacant Lots [Member]
Number of Real Estate Properties	3
EDI Real Estate, LLC [Member] | Real Estate, Held For Sale [Member]
Number of Real Estate Properties	5	3
Mt. Melrose LLC [Member] | Real Estate Occupied or Available to Rent, Held For Investment [Member]
Number of Real Estate Properties		98
Mt. Melrose LLC [Member] | Vacant Real Estate Being Prepared or to Be Prepared to Market to Tenants, Held For Investment [Member]
Number of Real Estate Properties		15
Mt. Melrose LLC [Member] | Real Estate Held For Investment [Member]
Number of Real Estate Properties		113
Mt. Melrose LLC [Member] | Real Estate Held For Sale, Residential and Commercial Properties [Member]
Number of Real Estate Properties		48
Mt. Melrose LLC [Member] | Real Estate Held For Sale, Vacant Lots [Member]
Number of Real Estate Properties		9
Mt. Melrose LLC [Member] | Real Estate, Held For Sale [Member]
Number of Real Estate Properties		57