Retirement Plans (Tables)

9 Months Ended

Sep. 30, 2018

Compensation And Retirement Disclosure [Abstract]

Net periodic pension cost

Net periodic pension cost is as follows:

	For the Three Months Ended September 30,						For the Nine Months Ended September 30,
	2018			2017			2018			2017
Interest cost	$	56		$	63		$	168		$	189
Expected return on assets		(79	)		(74	)		(237	)		(222	)
Amortization of net loss		21			24			63			72
Net periodic pension cost	$	(2	)	$	13		$	(6	)	$	39