Pension Information (Tables)

3 Months Ended

Mar. 31, 2018

Compensation And Retirement Disclosure [Abstract]

Components of Net Periodic Pension Benefit

Net periodic pension benefit was as follows:

	Three months ended
	March 31,
	2018			2017
Service cost	$	—		$	—
Interest cost		125			167
Expected return on plan assets		(273	)		(278	)
Other components		143			94
Net periodic pension benefit	$	(5	)	$	(17	)