Note 10 - Investments in Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

Marketable Securities [Table Text Block]

	September 30, 2022				December 31, 2021
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Investments available for sale:
Marketable equity securities	$	30,176	$	107,655	$	30,176	$	113,108
Corporate debt securities		15,457		14,912		19,038		18,843
Asset-backed securities		501		490		1,481		1,469
U.S. Treasury securities		9,464		9,157		15,082		14,998
Restricted investments available for sale:
Marketable equity securities		24,851		20,341		25,442		26,958
Corporate debt securities		60,262		56,273		60,816		62,936
Asset-based securities		26,855		24,746		32,918		33,301
U.S. Treasury securities		43,083		38,149		33,052		32,630
State and municipal securities		4,908		4,704		7,700		7,923
	$	215,557	$	276,427	$	225,705		312,166

Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]

	September 30, 2022						December 31, 2021
	Shares		Cost		Fair Value		Shares		Cost		Fair Value
NHI Common Stock		1,630,642	$	24,734	$	92,180		1,630,642	$	24,734	$	93,713

Investments Classified by Contractual Maturity Date [Table Text Block]

	September 30, 2022				December 31, 2021
	Cost		Fair Value		Cost		Fair Value
Maturities:
Within 1 year	$	39,584	$	38,955	$	32,718	$	32,843
1 to 5 years		78,047		72,953		95,293		96,937
6 to 10 years		42,899		36,523		41,580		41,835
Over 10 years		-		-		496		485
	$	160,530	$	148,431	$	170,087	$	172,100