Note 5 - Defined Benefit Plan (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

	Pension Benefits
	Three Months Ended June 30,
	2022			2021
Service cost	$	324		$	361
Interest cost		204			184
Expected return on plan assets		(629	)		(555	)
Amortization of prior service cost		-			(3	)
Recognized net actuarial loss		110			208
Net periodic benefit cost	$	9		$	195

	Pension Benefits
	Six Months Ended June 30,
	2022			2021
Service cost	$	648		$	722
Interest cost		408			368
Expected return on plan assets		(1,258	)		(1,110	)
Amortization of prior service cost		-			(6	)
Recognized net actuarial loss		220			416
Net periodic benefit cost	$	18		$	390