Note 11 - Investments in Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2021

Notes Tables

Marketable Securities [Table Text Block]

	September 30, 2021				December 31, 2020
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Investments available for sale:
Marketable equity securities	$	30,176	$	105,893	$	30,176	$	128,590
Corporate debt securities		20,005		19,905		25,812		25,778
Asset-backed securities		2,467		2,456		2,485		2,480
U.S. Treasury securities		14,251		14,229		19,519		19,504
Restricted investments available for sale:
Marketable equity securities		25,153		24,520		4,783		4,680
Corporate debt securities		64,796		67,786		61,709		66,247
Asset-based securities		33,804		34,512		40,655		41,769
U.S. Treasury securities		26,067		25,736		20,760		21,159
State and municipal securities		9,239		9,497		12,497		12,898
	$	225,958	$	304,534	$	218,396		323,105

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

	September 30, 2021						December 31, 2020
	Shares		Cost		Fair Value		Shares		Cost		Fair Value
NHI Common Stock		1,630,642	$	24,734	$	87,239		1,630,642	$	24,734	$	112,792

Investments Classified by Contractual Maturity Date [Table Text Block]

	September 30, 2021				December 31, 2020
	Cost		Fair Value		Cost		Fair Value
Maturities:
Within 1 year	$	34,690	$	34,792	$	49,694	$	49,863
1 to 5 years		97,382		99,947		99,143		103,002
6 to 10 years		38,060		38,901		34,326		36,685
Over 10 years		497		481		274		285
	$	170,629	$	174,121	$	183,437	$	189,835