Pension Information - Components of Net Periodic Pension Cost (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Compensation And Retirement Disclosure [Abstract]
Service cost	$ 0	$ 0
Interest cost	121	128
Expected return on plan assets	(187)	(256)
Other components	73	147
Net periodic pension cost	$ 7	$ 19