Accumulated Other Comprehensive Income (Loss) - Change in Accumulated Other Comprehensive Income (Loss) (AOCI) by Component, Net of Tax (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	[1]
Accumulated Other Comprehensive Income Loss [Line Items]
AOCI, balance as of December 31, 2015	$ 723,734
Other comprehensive (loss) income before reclassifications	(437)
Settlement loss reclassified from AOCI	7,666
Amounts reclassified from AOCI	3,906
Total other comprehensive (loss) income, net of tax	11,135	$ 5,200	$ (22,903)
AOCI, balance as of December 31, 2016	781,106	723,734
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
AOCI, balance as of December 31, 2015	(9,866)
Other comprehensive (loss) income before reclassifications	1,427
Total other comprehensive (loss) income, net of tax	1,427
AOCI, balance as of December 31, 2016	(8,439)	(9,866)
Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
AOCI, balance as of December 31, 2015	146
Other comprehensive (loss) income before reclassifications	(565)
Amounts reclassified from AOCI	591
Total other comprehensive (loss) income, net of tax	26
AOCI, balance as of December 31, 2016	172	146
Defined Benefit Pension Plans [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
AOCI, balance as of December 31, 2015	(47,871)
Other comprehensive (loss) income before reclassifications	(1,299)
Settlement loss reclassified from AOCI	7,666
Amounts reclassified from AOCI	3,315
Total other comprehensive (loss) income, net of tax	9,682
AOCI, balance as of December 31, 2016	(38,189)	(47,871)
AOCI, Total [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
AOCI, balance as of December 31, 2015	(57,591)
AOCI, balance as of December 31, 2016	$ (46,456)	$ (57,591)

[1] Revised in 2015 for the impact of the changes in accounting principle related to inventory accounting.