Stockholders' Equity - Accumulated Other Comprehensive Income (Loss), Net of Tax (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 970,093	$ 1,258,905	$ 1,293,813
Other comprehensive income (loss) before reclassifications	(24,547)	(52,036)	73,754
Adjustments for items reclassified to earnings, net of tax	4,717	10,735	7,951
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	(19,830)	(41,301)	81,705
Balance	681,574	970,093	1,258,905
Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(130,137)	(83,535)	(155,204)
Other comprehensive income (loss) before reclassifications	9,551	(46,602)	71,669
Adjustments for items reclassified to earnings, net of tax		0
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	9,551	(46,602)	71,669
Balance	(120,586)	(130,137)	(83,535)
Employee Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(143,683)	(148,984)	(159,020)
Other comprehensive income (loss) before reclassifications	(34,098)	(5,434)	2,085
Adjustments for items reclassified to earnings, net of tax	4,717	10,735	7,951
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	(29,381)	5,301	10,036
Balance	(173,064)	(143,683)	(148,984)
AOCI Attributable to Noncontrolling Interest [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(2)	(1)	(2)
Other comprehensive income (loss) before reclassifications		(1)	1
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX		(1)	1
Balance	(2)	(2)	(1)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(273,818)	(232,518)	(314,222)
Other comprehensive income (loss) before reclassifications	(24,547)	(52,035)	73,753
Adjustments for items reclassified to earnings, net of tax	4,717	10,735	7,951
OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX	(19,830)	(41,300)	81,704
Balance	(293,648)	(273,818)	(232,518)
Total AOCI [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(273,820)	(232,519)	(314,224)
Balance	$ (293,650)	$ (273,820)	$ (232,519)