Note 6 - Other Revenues (Details Textual)	3 Months Ended		9 Months Ended
	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2020 USD ($)
Number of Skilled Nursing Centers	75		75
Insurance Services Revenue, Total	$ 1,291,000	$ 1,294,000	$ 3,832,000	$ 4,074,000
Workers Compensation Revenue [Member]
Insurance Services Revenue, Total	780,000	779,000	2,298,000	2,441,000
Professional Liability Insurance [Member]
Insurance Services Revenue, Total	$ 511,000	515,000	$ 1,534,000	1,633,000
National [Member]
Number of Skilled Nursing Centers	5		5
Property Management Fee Revenue	$ 970,000	$ 920,000	$ 2,806,000	$ 3,399,000
FLORIDA
Number of Skilled Nursing Centers	4		4