Other Operating (Income) Expense - Additional Information (Detail)	9 Months Ended	12 Months Ended
	Sep. 30, 2017 USD ($)	Dec. 31, 2018 USD ($) Distribution	Dec. 31, 2017 USD ($)
Other Operating Income Expenses [Line Items]
Number of distribution centers | Distribution		1
Fair value estimated			$ (2,537,000)
Millen, Georgia Facility
Other Operating Income Expenses [Line Items]
Value of comparable building per square foot	35
Impairment of long-lived assets	$ 125,759,000	$ 0
Consideration receivable on sale of plant		23,000,000
Millen, Georgia Facility | Fair Value, Inputs, Level 3
Other Operating Income Expenses [Line Items]
Fair value estimated	$ 18,756,000
Millen, Georgia Facility | Discontinued Operations, Held-for-sale
Other Operating Income Expenses [Line Items]
Carrying value of assets held for sale		$ 17,842,000
Millen, Georgia Facility | Construction Documents and Historical Expenditures
Other Operating Income Expenses [Line Items]
Fair value downward adjustment percentage	65.00%
Millen, Georgia Facility | Building and Building Improvements
Other Operating Income Expenses [Line Items]
Fair value downward adjustment percentage	94.00%
Minimum | Millen, Georgia Facility
Other Operating Income Expenses [Line Items]
Percentage of salvage value	12.00%
Value of comparable building per square foot	30
Maximum | Millen, Georgia Facility
Other Operating Income Expenses [Line Items]
Percentage of salvage value	50.00%
Value of comparable building per square foot	40