Note 4 - Marketable Equity Securities (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Marketable Securities [Table Text Block]

	201 9		201 8
	(in thousands)
Available-for-sale securities:
Fair market value	$	29,521	$	27,549
Cost		24,156		25,602
Unrealized gain	$	5,365	$	1,947

Unrealized Gain (Loss) on Investments [Table Text Block]

	201 9		201 8
	(in thousands)
Available-for-sale securities:
Gross unrealized gains	$	7,808	$	5,668
Gross unrealized losses		2,443		3,721
Net unrealized gains	$	5,365	$	1,947

Schedule of Realized Gain (Loss) [Table Text Block]

	201 9		201 8		201 7
	(in thousands)
Realized gains:
Sale proceeds	$	2,984	$	1,044	$	6,833
Cost of securities sold		1,929		669		2,098
Realized gains	$	1,055	$	375	$	4,735
Realized gains, net of taxes	$	815	$	278	$	2,938