Employee Benefit Plans - Components of Net Periodic Defined Benefit Cost (Income) (Detail) - Defined Benefit Pension Plans - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 355	$ 474
Expected return on plan assets	(461)	(477)
Recognized actuarial losses	380	406
Total	$ 274	$ 403