Note 8 - Investments in Marketable Securities (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Available-for-sale Securities [Table Text Block]

	December 31, 2019				December 31, 2018
(in thousands)	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Investments available for sale:
Marketable equity securities	$	30,176	$	152,453	$	30,176	$	140,223
Restricted investments available for sale:
Corporate debt securities		63,414		65,653		69,439		67,632
Asset–backed securities		54,451		55,185		62,772		62,068
U.S. Treasury securities		13,379		13,410		22,038		21,457
State and municipal securities		12,922		13,158		21,818		21,436
	$	174,342	$	299,859	$	206,243	$	312,816

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

	December 31, 2019						December 31, 2018
	Shares		Cost		Fair Value		Shares		Cost		Fair Value
NHI Common Stock		1,630,642	$	24,734	$	132,865		1,630,642	$	24,734	$	123,179

Investments Classified by Contractual Maturity Date [Table Text Block]

	December 31, 2019				December 31, 2018
(in thousands)	Cost		Fair Value		Cost		Fair Value
Maturities:
Within 1 year	$	15,726	$	15,767	$	11,448	$	11,401
1 to 5 years		88,314		90,408		98,487		97,430
6 to 10 years		40,126		41,231		64,932		62,527
Over 10 years		–		–		1,200		1,235
	$	144,166	$	147,406	$	176,067	$	172,593