Employee Benefit Plans (Tables)

9 Months Ended

Sep. 30, 2018

Retirement Benefits [Abstract]

Components of Net Periodic Benefit Cost

The following table presents the components of net periodic benefit cost (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Service cost	$	338	$	79	$	1,014	$	239
Interest cost	117		134		351		403
Net periodic benefit cost	$	455	$	213	$	1,365	$	642