Note 9 - Investments in Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2024

Notes Tables

Marketable Securities [Table Text Block]

	March 31, 2024				December 31, 2023
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Investments available for sale:
Marketable equity securities	$	30,176	$	123,040	$	30,176	$	111,117
Corporate debt securities		494		484		2,497		2,441
U.S. Treasury securities		-		-		2,990		2,986
Restricted investments available for sale:
Marketable equity securities		24,495		29,616		24,134		26,779
Corporate debt securities		61,488		59,398		59,586		57,731
Asset-based securities		19,026		17,438		19,388		17,659
U.S. Treasury securities		47,323		43,004		46,771		42,863
State and municipal securities		4,079		3,992		4,106		4,047
	$	187,081	$	276,972	$	189,648		265,623

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

	March 31, 2024						December 31, 2023
	Shares		Cost		Fair Value		Shares		Cost		Fair Value
NHI Common Stock		1,630,642	$	24,734	$	102,453		1,630,642	$	24,734	$	91,071

Investments Classified by Contractual Maturity Date [Table Text Block]

	March 31, 2024				December 31, 2023
	Cost		Fair Value		Cost		Fair Value
Maturities:
Within 1 year	$	21,299	$	20,785	$	19,664	$	19,328
1 to 5 years		77,738		73,370		81,517		77,118
6 to 10 years		32,012		28,925		33,515		30,802
Over 10 years		1,361		1,236		642		479
	$	132,410	$	124,316	$	135,338	$	127,727