Business Segments - Information on Operating Segments (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Net sales	$ 698,408	$ 720,753	$ 1,299,904	$ 1,363,778
Operating profit (loss):	32,763	84,201	59,218	142,195
Interest expense	(8,417)	(8,210)	(16,108)	(16,037)
Interest income	1,988	1,755	4,303	3,557
Other pension and postretirement benefit expense	(6,967)	(9,369)	(13,953)	(18,693)
Other non-operating expense	(1,391)	(255)	(3,050)	(491)
Income before income taxes	17,976	68,122	30,410	110,531
Americas Tire
Segment Reporting Information [Line Items]
Net sales	573,807	605,234	1,052,634	1,127,603
Operating profit (loss):	40,480	90,884	71,715	161,669
International Tire
Segment Reporting Information [Line Items]
Net sales	124,601	115,519	247,270	236,175
Operating profit (loss):	5,652	2,690	13,086	5,715
Eliminations - Intercompany
Segment Reporting Information [Line Items]
Net sales	(53,843)	(45,973)	(98,983)	(76,272)
Operating profit (loss):	336	(174)	87	(526)
Eliminations - Intercompany | Americas Tire
Segment Reporting Information [Line Items]
Net sales	10,605	10,122	17,170	19,112
Eliminations - Intercompany | International Tire
Segment Reporting Information [Line Items]
Net sales	43,238	35,851	81,813	57,160
Operating Segments | Americas Tire
Segment Reporting Information [Line Items]
Net sales	584,412	615,356	1,069,804	1,146,715
Operating Segments | International Tire
Segment Reporting Information [Line Items]
Net sales	167,839	151,370	329,083	293,335
Unallocated corporate charges
Segment Reporting Information [Line Items]
Operating profit (loss):	$ (13,705)	$ (9,199)	$ (25,670)	$ (24,663)