Note 9 - Investments in Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2019

Notes Tables

Available-for-sale Securities [Table Text Block]

	September 30, 2019				December 31, 2018
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Investments available for sale:
Marketable equity securities	$	30,176	$	156,319	$	30,176	$	140,223
Restricted investments available for sale:
Corporate debt securities		62,584		64,683		69,439		67,632
Asset-based securities		57,451		58,454		62,772		62,068
U.S. Treasury securities		13,088		13,211		22,038		21,457
State and municipal securities		12,976		13,209		21,818		21,436
	$	176,275	$	305,876	$	206,243	$	312,816

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

	September 30, 2019						December 31, 2018
	Shares		Cost		Fair Value		Shares		Cost		Fair Value
NHI Common Stock		1,630,642	$	24,734	$	134,349		1,630,642	$	24,734	$	123,179

Investments Classified by Contractual Maturity Date [Table Text Block]

	September 30, 2019				December 31, 2018
	Cost		Fair Value		Cost		Fair Value
Maturities:
Within 1 year	$	11,139	$	11,153	$	11,448	$	11,401
1 to 5 years		90,140		92,120		98,487		97,430
6 to 10 years		44,820		46,284		64,932		62,527
Over 10 years		-		-		1,200		1,235
	$	146,099	$	149,557	$	176,067	$	172,593