Note 9 - Employee Retirement Plans (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Schedule of Allocation of Plan Assets [Table Text Block]

	Actual as of			Actual as of
	December 31, 2022			December 31, 2021
U.S. Pension plan:
Cash		3	%		2	%
Debt securities		28	%		34	%
Equity securities		69	%		64	%
Total		100	%		100	%

Schedule Of Fair Value Plan Assets Measured On Recurring Basis [Table Text Block]

			Quoted prices in		Significant		Significant
			active		observable		unobservable		Measured at
(In Thousands)			markets		inputs		inputs		Net Asset
	Fair Value		(Level 1)		(Level 2)		(Level 3)		Value
Pension plan measured at fair value:
Equity securities, primarily exchange traded funds	$	31,196	$	26,847	$	1,147	$	3,202	$	—
Debt securities		12,928		3,434		9,494		—		—
Cash and cash equivalents		1,253		—		1,253		—		—
Total fair value of plan assets	$	45,377	$	30,281	$	11,894	$	3,202	$	—

			Quoted prices in		Significant		Significant
			active		observable		unobservable		Measured at
(In Thousands)			markets		inputs		inputs		Net Asset
	Fair Value		(Level 1)		(Level 2)		(Level 3)		Value
Pension plan measured at fair value:
Equity securities, primarily exchange traded funds	$	36,240	$	36,240	$	—	$	—	$	—
Debt securities, primarily exchange traded funds		19,628		19,628		—		—		—
Cash and cash equivalents		911		—		911		—		—
Total fair value of plan assets	$	56,779	$	55,868	$	911	$	—	$	—

Schedule of Net Funded Status [Table Text Block]

(In Thousands)	Year Ended December 31,
	2022			2021			2020
Change in benefit obligation:
Benefit obligation at beginning of the period	$	84,308		$	88,960		$	91,654
Service cost		—			—			112
Interest cost		2,313			2,168			2,907
Benefits paid		(5,667	)		(5,693	)		(5,990	)
Actuarial (gain) loss (A)		(16,681	)		(1,127	)		5,277
Settlement		—			—			(4,407	)
Foreign currency exchange rate changes		—			—			(593	)
Benefit obligation at end of the period	$	64,273		$	84,308		$	88,960
Change in plan assets:
Fair value of plan assets at beginning of the period	$	56,779		$	56,495		$	59,625
Actual return		(7,337	)		4,374			6,890
Actuarial loss		—			—			18
Administrative expenses		—			—			(49	)
Employer contributions		1,603			1,603			1,615
Benefits paid		(5,667	)		(5,693	)		(5,990	)
Settlement		—			—			(5,000	)
Foreign currency exchange rate changes		—			—			(614	)
Fair value of plan assets at end of the period		45,378			56,779			56,495
Unfunded status at end of the period	$	(18,895	)	$	(27,529	)	$	(32,465	)
Net amount recognized in the balance sheet consists of:
Current liabilities	$	(1,575	)	$	(1,578	)	$	(1,524	)
Noncurrent liabilities		(17,320	)		(25,951	)		(30,941	)
Net amount recognized	$	(18,895	)	$	(27,529	)	$	(32,465	)

Defined Benefit Plan, Plan with Accumulated Benefit Obligation in Excess of Plan Assets [Table Text Block]

(In Thousands)	December 31,		December 31,
	2022		2021
Projected and accumulated benefit obligation	$	64,273	$	84,308
Fair value of plan assets		45,378		56,779

Schedule of Net Benefit Costs [Table Text Block]

(In Thousands)	Year Ended December 31,
	2022			2021			2020
Service cost	$	—		$	—		$	109
Interest cost		2,313			2,168			2,907
Expected return on plan assets		(3,006	)		(2,174	)		(2,191	)
Administrational expenses		—			—			49
Payroll tax of net pension costs		—			—			14
Amortization of net actuarial losses		63			145			(5	)
Settlement/curtailment loss		—			—			738
Net periodic pension cost	$	(630	)	$	139		$	1,621

Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]

	Pension Benefits
(In Thousands)	Year Ended December 31,
	2022			2021			2020
Total net gain recognized in other comprehensive (income) loss	$	(6,404	)	$	(3,472	)	$	(568	)

Defined Benefit Plan, Assumptions [Table Text Block]

	Pension Benefits
	2022			2021
Discount rate		2.9	%		2.5	%
Expected long-term rate of return on assets		5.5	%		4.0	%

Schedule of Expected Benefit Payments [Table Text Block]

	Pension
Year ending December 31, (In Thousands)	Benefits
2023	$	5,841
2024		5,792
2025		5,727
2026		5,634
2027		5,513
2028 – 2032		25,440
Total 10-year estimated future benefit payments	$	53,947