Note 4 - Defined Benefit Plan (Tables)

6 Months Ended

Jun. 30, 2023

Notes Tables

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

	Pension Benefits
	Three Months Ended June 30,
	2023			2022
Service cost	$	203		$	324
Interest cost		273			204
Expected return on plan assets		(518	)		(629	)
Amortization of prior service cost		-			-
Recognized net actuarial loss		17			110
Net periodic benefit (income) cost	$	(25	)	$	9

	Pension Benefits
	Six Months Ended June 30,
	2023			2022
Service cost	$	406		$	648
Interest cost		546			408
Expected return on plan assets		(1,036	)		(1,258	)
Amortization of prior service cost		-			-
Recognized net actuarial loss		34			220
Net periodic benefit (income) cost	$	(50	)	$	18