Interim Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenues and grant income:
Net patient revenues	$ 260,247,000	$ 254,817,000	$ 776,661,000	$ 708,648,000
Other revenues	10,596,000	11,491,000	33,584,000	33,916,000
Government stimulus income	0	10,429,000	10,940,000	48,304,000
Net operating revenues and grant income	270,843,000	276,737,000	821,185,000	790,868,000
Costs and expenses:
Salaries, wages, and benefits	173,198,000	170,235,000	518,828,000	483,263,000
Other operating	72,883,000	73,109,000	218,279,000	204,211,000
Rent	10,294,000	10,204,000	30,770,000	30,437,000
Depreciation and amortization	10,253,000	10,229,000	30,011,000	30,521,000
Interest	137,000	198,000	451,000	657,000
Total costs and expenses	266,765,000	263,975,000	798,339,000	749,089,000
Income from operations	4,078,000	12,762,000	22,846,000	41,779,000
Other income:
Non–operating income	2,731,000	3,399,000	8,451,000	15,245,000
Gain on acquisition of equity method investment	0	0	0	95,202,000
Unrealized losses on marketable equity securities	(11,056,000)	(23,797,000)	(11,479,000)	(23,227,000)
Income/(loss) before income taxes	(4,247,000)	(7,636,000)	19,818,000	128,999,000
Income tax (provision)/benefit	1,140,000	4,090,000	(5,415,000)	(5,907,000)
Net income/(loss)	(3,107,000)	(3,546,000)	14,403,000	123,092,000
Net (income)/loss attributable to noncontrolling interest	678,000	198,000	1,689,000	(290,000)
Net income/(loss) attributable to National HealthCare Corporation	$ (2,429,000)	$ (3,348,000)	$ 16,092,000	$ 122,802,000
Earnings/(loss) per share attributable to National HealthCare Corporation stockholders:
Basic (in dollars per share)	$ (0.16)	$ (0.22)	$ 1.04	$ 8.00
Diluted (in dollars per share)	$ (0.16)	$ (0.22)	$ 1.04	$ 7.97
Basic (in shares)	15,445,569	15,364,043	15,438,375	15,347,042
Diluted (in shares)	15,445,569	15,364,043	15,477,103	15,414,683
Dividends declared to common stockholders, per share (in dollars per share)	$ 0.57	$ 0.52	$ 1.69	$ 1.56