Note 4 - Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2023

Table Text Block [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

We sponsor three defined benefit pension plans, two of which cover substantially all U.S. employees. Net periodic pension (benefit) cost for the plans consisted of the following for the three and nine months ended September 30, 2023 and 2022 (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2023			2022			2023			2022
Service cost	$	949		$	1,566		$	2,847		$	4,697
Interest cost		1,993			1,369			5,979			4,107
Expected return on plan assets		(3,107	)		(3,363	)		(9,321	)		(10,089	)
Amortization of prior service cost		125			128			375			384
Amortization of net loss		(47	)		512			(141	)		1,537
Net periodic pension (benefit) cost	$	(87	)	$	212		$	(261	)	$	636