Retirement Plans - Components of Net Periodic Benefit Cost for Domestic Retirement Plans (Detail) - United States - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 1,858	$ 1,674
Recognized net actuarial loss	1,065	2,091
Net periodic benefit cost	$ 2,923	$ 3,765
Discount rate	4.00%	3.25%