Note 8 - Long-term Leases (Details Textual)		3 Months Ended		9 Months Ended
	Sep. 01, 2022 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Aug. 31, 2022 USD ($)	Jun. 30, 2022
Operating Lease, Expense		$ 10,294,000	$ 10,204,000	$ 30,770,000	$ 30,437,000
Lessee, Operating Lease, Liability, to be Paid, Year One		35,950,000		35,950,000
Lessee, Operating Lease, Liability, to be Paid, Year Two		34,353,000		34,353,000
Lessee, Operating Lease, Liability, to be Paid, Year Three		33,278,000		33,278,000
Lessee, Operating Lease, Liability, to be Paid, Year Four		$ 32,613,000		$ 32,613,000
Two Leases with NHI [Member]
Number of Skilled Nursing Centers Leased from NHI		28		28
Number of Assisted Living Centers Leased from NHI		5		5
Number of Independent Living Centers Leased from NHI		3		3
Lease One With NHI [Member]
Number of Skilled Nursing Facilities Subleased							4
Both NHI Lease Agreements [Member]
Operating Lease, Expense		$ 9,478,000	$ 9,026,000	$ 28,293,000	$ 28,336,000
NHI Lease Agreement [Member]
Number of Skilled Nursing Facilities Leased	7
Number of Real Property Leased	7
Number of Skilled Nursing Facilities Terminated	7
Operating Lease, Expense, Increased Next Four and One-third Year	$ 8,775,000
Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year, Increased During Period	875,000
Lessee, Operating Lease, Liability, to be Paid, Year One	34,075,000					$ 30,750,000
Lessee, Operating Lease, Liability, to be Paid, Year Two	32,625,000					30,750,000
Lessee, Operating Lease, Liability, to be Paid, Year Three	32,225,000					30,750,000
Lessee, Operating Lease, Liability, to be Paid, Year Four	$ 31,975,000					$ 30,750,000
Senior Healthcare Facilities [Member]
Lessee, Finance Lease, Term of Contract (Year)		10 years		10 years
Number of Additional Lease Options		2		2
Lessee, Finance Lease, Annual Base Rent Expense				$ 5,200,000
Lessee, Finance Lease Additional Percentage Rent Percentage				4.00%