Note 12 - Noncontrolling Interests - Consolidated Common Shares (Details) - shares	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Common Shares Outstanding (in shares)	9,162,096	5,498,980	5,022,578	5,022,578
Common shares and partner capital units (in shares)	21,470,084	19,286,103	18,809,701
Noncontrolling Interest [Member] | OP Units [Member]
Partners capital units (in shares)	3,811,844	5,290,978	5,290,978
Noncontrolling Interest [Member] | Sub OPs [Member]
Partners capital units (in shares)	8,496,144	8,496,144	8,496,144