Debt - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2010	May 27, 2015	May 26, 2015
Debt Instrument [Line Items]
Effect of tax exemption granted to Texarkana Industrial Revenue Bonds				100.00%
Assets associated with city of Texarkana	$ 20,000,000	$ 20,000,000
Liabilities associated with city of Texarkana	20,000,000	20,000,000
Future due payment related to debt in year 2016	2,421,000
Future due payment related to debt in year 2017	1,489,000
Future due payment related to debt in year 2018	174,488,000
Future due payment related to debt in year 2019	0
Future due payment related to debt in year 2020	0
Short-term notes payable	$ 26,286,000	$ 12,437,000
Weighted average interest rate of short term notes payable (as a percent)	4.26%	2.18%
Interest Paid	$ 28,842,000	$ 27,560,000	$ 30,346,000
Interest capitalized	3,016,000	4,473,000	$ 1,878,000
Letter of Credit
Debt Instrument [Line Items]
Amounts used to secure letters of credit	21,800,000	$ 37,400,000
Bank Group And Accounts Receivable Securitization Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	519,000,000
Asian Credit Lines
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	69,200,000
Additional borrowing capacity of credit facility	42,900,000
Accounts Receivable Facility Before May 27, 2015 | Accounts Receivable Securitization Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity						$ 175,000,000
Amended Accounts Receivable Facility | Accounts Receivable Securitization Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 150,000,000
Borrowings outstanding	0
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					400,000,000
Increase in line credit facility (up to)					100,000,000
Borrowings outstanding	0
Line of Credit | Letter of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 110,000,000
Secured Notes
Debt Instrument [Line Items]
Secured notes outstanding	$ 0