Note 5 - Retirement Plans (Tables)

3 Months Ended

Mar. 31, 2017

Notes Tables

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended March 31,
	2017			2016
Interest cost	$	807		$	1,184
Expected return on plan assets		(976	)		(1,297	)
Loss amortization		84			153
Net periodic benefit cost	$	(85	)	$	40