Interim Condensed Consolidated Statements of Comprehensive Income/(Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net income/(loss)	$ (3,546)	$ 12,868	$ 123,092	$ 14,574
Other comprehensive income/(loss):
Unrealized gains/(losses) on investments in marketable debt securities	(658)	632	(2,691)	2,883
Reclassification adjustment for realized gains on sales of marketable debt securities	(2)	(122)	(214)	(135)
Income tax (expense)/benefit related to items of other comprehensive income	138	(107)	614	(577)
Other comprehensive income/(loss), net of tax	(522)	403	(2,291)	2,171
Net (income)/loss attributable to noncontrolling interest	198	(19)	(290)	(253)
Comprehensive income/(loss) attributable to National HealthCare Corporation	$ (3,870)	$ 13,252	$ 120,511	$ 16,492