Note 3 - Share-based Compensation (Tables)

9 Months Ended

Sep. 30, 2022

Notes Tables

Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

	Three Months Ended September 30,				Nine Months Ended September 30,
	2022		2021		2022		2021
Restricted share units:
Pretax compensation expense	$	14,655	$	11,677	$	42,550	$	34,669
Tax benefit		3,664		2,931		10,638		8,702
Restricted share unit expense, net of tax	$	10,991	$	8,746	$	31,912	$	25,967
Performance share units:
Pretax compensation expense	$	5,498	$	4,269	$	17,187	$	12,742
Tax benefit		1,375		1,071		4,297		3,198
Performance share unit expense, net of tax	$	4,123	$	3,198	$	12,890	$	9,544