Note I - Pension and Other Post-retirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2024

Notes Tables

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended June 30,											Six Months Ended June 30,
	Pension Plans						Post-Retirement Healthcare Plan					Pension Plans						Post-Retirement Healthcare Plan
	2024			2023			2024			2023		2024			2023			2024			2023
Service cost	$	—		$	—		$	5		$	13	$	—		$	—		$	10		$	26
Interest cost		6,614			8,631			23			33		13,228			17,262			46			66
Expected return on plan assets		(8,122	)		(10,192	)		—			—		(16,244	)		(20,384	)		—			—
Amortization of net loss		2,594			4,745			(24	)		—		5,188			9,490			(47	)		—
Net periodic benefit cost (income)	$	1,086		$	3,184		$	4		$	46	$	2,172		$	6,368		$	9		$	92