Retirement Plans (Tables)

6 Months Ended

Jun. 30, 2017

Compensation And Retirement Disclosure [Abstract]

Net periodic pension cost

Net periodic pension cost are as follows:

	For the Three Months Ended June 30,						For the Six Months Ended June 30,
	2017			2016			2017			2016
Interest cost	$	63		$	68		$	126		$	136
Expected return on assets		(74	)		(80	)		(148	)		(160	)
Amortization of net loss		24			21			48			41
Net periodic pension cost	$	13		$	9		$	26		$	17
Company contributions	$	—		$	—		$	—		$	—