Retirement Plans - Domestic Retirement Plan's Financial Status and Amounts Recognized in Consolidated Balance Sheets (Detail) - United States - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Benefit obligation, beginning of year	$ 48,163	$ 53,274
Interest cost	1,858	1,674
Actuarial (gain) loss	7,075	(3,207)
Benefits paid	(3,494)	(3,578)
Benefit obligation, end of year	53,602	48,163
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets, beginning of year	0	0
Employer contribution	3,494	3,578
Benefits paid	(3,494)	(3,578)
Fair value of plan assets, end of year	0	0
Funded status, end of year	(53,602)	(48,163)
Amounts recognized in the consolidated balance sheets
Other current liabilities	(3,929)	(3,410)
Other liabilities	(49,672)	(44,752)
Accumulated other comprehensive loss	19,732	13,722
Net amount recognized	(33,869)	(34,440)
Accumulated benefit obligation	$ 53,602	$ 48,163
Weighted average assumptions used to determine benefit obligation
Discount rate	2.75%	4.00%