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Debt, Inventory Financing Facilities, Finance Leases and Other Financing Obligations - Long-Term Debt (Detail) - USD ($)
Sep. 30, 2019
Dec. 31, 2018
Long-term debt    
Accounts receivable securitization financing facility   $ 194,000,000
Finance leases and other financing obligations $ 1,813,000 2,920,000
Total 836,856,000 196,920,000
Less: current portion of long-term debt (1,142,000) (1,395,000)
Long-term debt 835,714,000 $ 195,525,000
ABL Facility [Member]    
Long-term debt    
Revolving credit facility 553,000,000  
Convertible Senior Notes due 2025 [Member]    
Long-term debt    
Convertible senior notes due 2025 $ 282,043,000