ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			$ (288,447)	$ (216,840)	$ (216,840)
Other comprehensive income (loss) before reclassifications			8,727		(83,820)
Amounts reclassified from accumulated other comprehensive loss			3,487		12,213
Other comprehensive income (loss), net of tax	$ 2,289	$ (40,709)	12,214	(22,676)	(71,607)
Ending balance	(302,490)		(302,490)		(288,447)
Foreign Currency Translation Adjustments, Net [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			(147,148)	(94,708)	(94,708)
Other comprehensive income (loss) before reclassifications			8,782		(52,440)
Amounts reclassified from accumulated other comprehensive loss			0		0
Other comprehensive income (loss), net of tax			8,782		(52,440)
Ending balance	(139,684)		(139,684)		(147,148)
Total Pension and Postretirment Adjustments, Net [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			(141,299)	$ (122,132)	(122,132)
Other comprehensive income (loss) before reclassifications			(55)		(31,380)
Amounts reclassified from accumulated other comprehensive loss			3,487		12,213
Other comprehensive income (loss), net of tax			3,432		(19,167)
Ending balance	(162,806)		(162,806)		$ (141,299)
Accounting Standards Update 2018-02 [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Ending balance	(26,257)		(26,257)
Accounting Standards Update 2018-02 [Member] | Foreign Currency Translation Adjustments, Net [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Ending balance	(1,318)		(1,318)
Accounting Standards Update 2018-02 [Member] | Total Pension and Postretirment Adjustments, Net [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Ending balance	$ (24,939)		$ (24,939)