Interim Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash Flows From Operating Activities:
Net income	$ 19,476,000	$ 23,202,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	20,739,000	20,776,000
Equity in (earnings) losses of unconsolidated investments	4,584,000	(3,380,000)
Distributions from unconsolidated investments	3,741,000	4,337,000
Unrealized losses on marketable equity securities	3,069,000
Gains on sale of restricted marketable securities	(25,000)	(238,000)
Deferred income taxes	(2,376,000)	(1,540,000)
Stock–based compensation	1,177,000	832,000
Changes in operating assets and liabilities:
Accounts receivable	4,537,000	2,891,000
Income tax receivable	5,465,000	2,218,000
Inventories	(153,000)	310,000
Prepaid expenses and other assets	(1,551,000)	(969,000)
Trade accounts payable	188,000	(3,855,000)
Accrued payroll	(11,414,000)	(12,601,000)
Amounts due to third party payors	(171,000)	931,000
Accrued risk reserves	1,538,000	3,379,000
Other current liabilities	(1,386,000)	1,440,000
Other noncurrent liabilities	540,000	1,048,000
Deferred revenue	1,395,000	1,524,000
Net cash provided by operating activities	49,373,000	40,305,000
Cash Flows From Investing Activities:
Additions to property and equipment	(15,456,000)	(16,681,000)
Investments in unconsolidated companies		(176,000)
Collections of notes receivable	800,000	3,651,000
Purchase of restricted marketable securities	(6,545,000)	(22,775,000)
Sale of restricted marketable securities	4,399,000	44,756,000
Net cash (used in) provided by investing activities	(16,802,000)	8,775,000
Cash Flows From Financing Activities:
Principal payments on debt	(15,000,000)
Principal payments under capital lease obligations	(1,820,000)	(1,715,000)
Dividends paid to common stockholders	(14,602,000)	(13,649,000)
Issuance of common shares	1,327,000	1,496,000
Repurchase of common shares	(867,000)
Equity attributable to noncontrolling interest		970,000
Entrance fee refunds	(159,000)	(757,000)
Change in deposits		(418,000)
Net cash used in financing activities	(31,121,000)	(14,073,000)
Net Increase in Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents	1,450,000	35,007,000
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Beginning of Period	67,421,000	31,589,000
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, End of Period	68,871,000	66,596,000
Balance Sheet Classifications:
Total Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents	$ 67,421,000	$ 31,589,000