Note 10 - Segment Reporting - Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Total revenues	$ 32,050	$ 30,651
Property operating expenses	7,539	8,642
Real estate taxes and insurance	7,931	7,312
General and administrative	2,942	2,293
Transaction pursuit costs	424	60
Depreciation and amortization	6,705	6,227
Total operating expenses	25,541	24,534
Income from operations	6,509	6,117
Total Assets	1,226,779		$ 1,233,657
Interest expense	9,985	10,217
Capital expenditures	16,434	5,542
Rental Income [Member]
Total revenues	32,050	30,651
Commercial Segment [Member]
Total revenues	10,588	9,047
Property operating expenses	1,143	1,119
Real estate taxes and insurance	2,020	1,896
General and administrative	524	299
Transaction pursuit costs	79	60
Depreciation and amortization	1,356	1,243
Total operating expenses	5,122	4,617
Income from operations	5,466	4,430
Total Assets	310,782		310,423
Interest expense	2,494	2,076
Capital expenditures	790	2,370
Commercial Segment [Member] | Rental Income [Member]
Total revenues	10,588	9,047
Residential Segment [Member]
Total revenues	21,462	21,604
Property operating expenses	6,396	7,523
Real estate taxes and insurance	5,911	5,416
General and administrative	2,418	1,994
Transaction pursuit costs	345	0
Depreciation and amortization	5,349	4,984
Total operating expenses	20,419	19,917
Income from operations	1,043	1,687
Total Assets	915,997		$ 923,324
Interest expense	7,491	8,141
Capital expenditures	15,644	3,172
Residential Segment [Member] | Rental Income [Member]
Total revenues	$ 21,462	$ 21,604