Note 6 - Defined Benefit Plan (Tables)

3 Months Ended

Mar. 31, 2020

Notes Tables

Schedule of Defined Benefit Plans Disclosures [Table Text Block]

	Pension Benefits
	Three Months Ended March, 31
	2020			2019
Service cost	$	270		$	200
Interest cost		205			221
Expected return on plan assets		(420	)		(365	)
Amortization of prior service cost		(27	)		(27	)
Recognized net actuarial loss		177			158
Net periodic benefit cost	$	205		$	187