Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2018

Employee Benefit Plans

Schedule of components of the net periodic benefit cost

	Three Months ended March 31,
	2018			2017
Service cost	$	2		$	2
Interest cost	586			553
Expected return on plan assets	(719		)	(577		)
Amortization:
Amortization of prior service cost	(36		)	(32		)
Amortization of net (gain) loss	463			500
Net periodic benefit cost	$	296		$	446