Note 12 - Retirement Plans (Tables)

9 Months Ended

Sep. 30, 2017

Notes Tables

Schedule of Net Benefit Costs [Table Text Block]

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2017			2016			2017			2016
Interest cost	$	153		$	166		$	465		$	501
Expected return on plan assets		(184	)		(180	)		(554	)		(542	)
Amortization of loss		184			77			550			538
Net periodic pension expense	$	153		$	63		$	461		$	497