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Long Term Debt and Capital Leases (Net of Issuance Costs and Debt Discounts Excluding Line-of-credit Arrangements) (Detail) - USD ($)
$ in Thousands
Apr. 22, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Accounts receivable securitization facility $ 40,000 $ 95,000
Capital lease obligations 28,087 30,427
Other notes payable 15,722 16,866
Total debt and capital lease obligations 892,298 958,157
Current maturities of long-term debt and capital lease obligations 10,511 11,490
Total long-term debt and capital lease obligations 881,787 946,667
Unsecured Credit Facility    
Debt Instrument [Line Items]    
Unsecured credit facility 16,300 24,000
2026 Notes    
Debt Instrument [Line Items]    
Senior notes 394,583 394,406
2022 Notes    
Debt Instrument [Line Items]    
Senior notes $ 397,606 $ 397,458