Note 9 - Investments in Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2025

Notes Tables

Marketable Securities [Table Text Block]

	June 30, 2025				December 31, 2024
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Investments available for sale:
Marketable equity securities	$	30,176	$	146,636	$	30,176	$	140,064
Restricted investments available for sale:
Marketable equity securities		12,263		16,269		18,534		23,190
Corporate debt securities		60,995		60,888		58,927		57,471
Asset-based securities		14,327		13,381		15,593		14,410
U.S. Treasury securities		56,631		55,718		46,811		44,186
State and municipal securities		3,736		3,714		3,787		3,737
	$	178,128	$	296,606	$	173,828		283,058

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

	June 30, 2025						December 31, 2024
	Shares		Cost		Fair Value		Shares		Cost		Fair Value
NHI Common Stock		1,630,642	$	24,734	$	114,341		1,630,642	$	24,734	$	113,003

Investments Classified by Contractual Maturity Date [Table Text Block]

	June 30, 2025				December 31, 2024
	Cost		Fair Value		Cost		Fair Value
Maturities:
Within 1 year	$	31,840	$	31,665	$	25,707	$	25,317
1 to 5 years		63,525		62,311		66,117		63,379
6 to 10 years		39,769		39,280		32,648		30,606
Over 10 years		555		445		646		502
	$	135,689	$	133,701	$	125,118	$	119,804