Note 15 - Dividends and Dividend Equivalents (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Dividends Declared [Table Text Block]

	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Dividend declared per share	$	0.75	$	0.60	$	1.50	$	1.20
Total amount	$	35,029	$	27,501	$	69,937	$	54,894