Interim Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net income	$ 10,569	$ 11,866	$ 23,202	$ 25,565
Other Comprehensive Income:
Unrealized gains on investments in marketable securities	13,297	18,123	12,356	30,627
Reclassification adjustment for realized gains on sale of securities	(204)	(261)	(238)	(540)
Income tax expense related to items of other comprehensive income	(5,054)	(6,887)	(4,646)	(11,554)
Other Comprehensive Income, net of tax	8,039	10,975	7,472	18,533
Loss Attributable To Noncontrolling Interest	86		181
Comprehensive Income Attributable to National HealthCare Corporation	$ 18,694	$ 22,841	$ 30,855	$ 44,098