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Note 1 - Summary of Significant Accounting Policies (Details Textual) | 12 Months Ended
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Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
Accounts Receivable, Credit Loss Expense (Reversal) | $ 8,831,000 | $ 7,424,000 | $ 4,711,000
Accounts Receivable, Allowance for Credit Loss | $ 9,702,000 | 8,054,000 |
Number of Reportable Segments | 2 |  |
General and Administrative Expense | $ 26,236,000 | 21,412,000 | 20,651,000
Contract with Customer, Refund Liability | 6,063,000 | 6,376,000 |
Continuing Care Retirement Communities, Refund Obligation | $ 1,474,000 | $ 1,606,000 |
Impairment (Recovery) of Assets [Member] |  |  |
Accounts Receivable, Allowance for Credit Loss, Recovery |  |  | $ 3,728,000
Minimum [Member] |  |  |
Lessee, Operating Lease, Term of Contract (Year) | 2 years |  |
Minimum [Member] | Building and Building Improvements [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 20 years |  |
Minimum [Member] | Equipment and Furniture [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 3 years |  |
Maximum [Member] |  |  |
Lessee, Operating Lease, Term of Contract (Year) | 15 years |  |
Maximum [Member] | Building and Building Improvements [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 40 years |  |
Maximum [Member] | Equipment and Furniture [Member] |  |  |
Property, Plant and Equipment, Useful Life (Year) | 15 years |  |

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