Note 9 - Investments in Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Available-for-sale Securities [Table Text Block]

	March 31, 2020				December 31, 2019
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Investments available for sale:
Marketable equity securities	$	30,176	$	92,061	$	30,176	$	152,453
Restricted investments available for sale:
Corporate debt securities		66,599		67,151		63,414		65,653
Asset-based securities		54,273		53,465		54,451		55,185
U.S. Treasury securities		13,372		14,130		13,379		13,410
State and municipal securities		12,873		13,065		12,922		13,158
	$	177,293	$	239,872	$	174,342	$	299,859

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

	March 31, 2020						December 31, 2019
	Shares		Cost		Fair Value		Shares		Cost		Fair Value
NHI Common Stock		1,630,642	$	24,734	$	80,749		1,630,642	$	24,734	$	132,865

Investments Classified by Contractual Maturity Date [Table Text Block]

	March 31, 2020				December 31, 2019
	Cost		Fair Value		Cost		Fair Value
Maturities:
Within 1 year	$	14,754	$	14,600	$	15,726	$	15,767
1 to 5 years		94,416		94,603		88,314		90,408
6 to 10 years		37,947		38,608		40,126		41,231
Over 10 years		-		-		-		-
	$	147,117	$	147,811	$	144,166	$	147,406