Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash Flows From Operating Activities:
Net income	$ 102,086,000	$ 65,288,000	$ 19,977,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	41,985,000	42,034,000	40,489,000
Equity in earnings of unconsolidated investments	(589,000)	(2,015,000)	(477,000)
Distributions from unconsolidated investments	512,000	470,000	439,000
Unrealized (gains) losses on marketable equity securities	(30,958,000)	(14,944,000)	15,806,000
(Gains) losses on sale of marketable securities	(1,093,000)	667,000	1,326,000
Gain on sale of unconsolidated company	(1,024,000)	0	0
Gain on sale of property and equipment	0	(6,230,000)	0
Impairment (recovery) of assets	0	0	(3,728,000)
Deferred income taxes	(17,941,000)	(5,768,000)	(5,995,000)
Stock–based compensation	4,160,000	2,782,000	2,612,000
Changes in operating assets and liabilities:
Accounts receivable	(26,441,000)	(8,559,000)	(3,862,000)
Inventories	(599,000)	(298,000)	1,494,000
Prepaid expenses and other assets	6,283,000	(669,000)	(11,111,000)
Operating lease obligations	273,000	(1,244,000)	(430,000)
Trade accounts payable	6,299,000	2,236,000	(5,530,000)
Accrued payroll	4,951,000	11,600,000	(34,188,000)
Amounts due to third party payors	(3,018,000)	1,738,000	(964,000)
Accrued risk reserves	357,000	790,000	4,421,000
Provider relief funds	0	0	(9,443,000)
Contract liabilities	0	0	(15,022,000)
Other current liabilities	(3,349,000)	5,376,000	(2,444,000)
Other noncurrent liabilities	(10,473,000)	6,426,000	3,382,000
Net cash provided by operating activities	107,303,000	111,216,000	8,742,000
Cash Flows From Investing Activities:
Purchases of property and equipment	(27,600,000)	(27,901,000)	(30,200,000)
Investments in unconsolidated companies	(14,298,000)	(4,661,000)	0
Proceeds from sale of assets	2,100,000	0	4,175,000
(Investments in) collections of notes receivable	(9,000)	(201,000)	3,879,000
Purchases of marketable securities	(35,057,000)	(29,501,000)	(33,793,000)
Sale of marketable securities	51,970,000	47,396,000	49,961,000
Net cash used in investing activities	(236,693,000)	(17,568,000)	(5,978,000)
Cash Flows From Financing Activities:
Borrowings under credit facility	150,000,000	0	0
Repayments under credit facility	(13,000,000)	0	0
Debt issuance costs	(400,000)	0	0
Principal payments under finance lease obligations	(860,000)	(4,985,000)	(4,695,000)
Dividends paid to common stockholders	(36,964,000)	(35,560,000)	(34,604,000)
Issuance of common shares	14,268,000	313,000	2,114,000
Repurchase of common shares	(13,502,000)	(2,482,000)	(9,903,000)
Noncontrolling interest contributions	1,115,000	0	250,000
Entrance fee deposits (refunds)	(313,000)	169,000	(804,000)
Net cash provided by / (used in) financing activities	100,344,000	(42,545,000)	(47,642,000)
Net Increase (Decrease) in Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents	(29,046,000)	51,103,000	(44,878,000)
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Beginning of Period	125,968,000	74,865,000	119,743,000
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, End of Period	96,922,000	125,968,000	74,865,000
Balance Sheet Classifications:
Cash and cash equivalents	76,121,000	107,076,000	58,667,000
Restricted Cash and Cash Equivalents	20,801,000	18,892,000	16,198,000
Total Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents	96,922,000	125,968,000	74,865,000
Supplemental Information:
Cash payments for interest	3,416,000	290,000	493,000
Cash payments for income taxes	17,525,000	14,571,000	8,765,000
White Oak Senior Living Portfolio [Member]
Cash Flows From Investing Activities:
Acquisition of businesses, net of cash acquired	(215,896,000)	0	0
Other Business Acquisitions [Member]
Cash Flows From Investing Activities:
Acquisition of businesses, net of cash acquired	$ 2,097,000	$ (2,700,000)	$ 0