Hedging Transactions and Derivative Financial Instruments - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2018 USD ($)	Apr. 01, 2017 USD ($)	Mar. 31, 2018 GBP (£)	Dec. 30, 2017 USD ($)	Dec. 30, 2017 GBP (£)
Derivative [Line Items]
Period over which outstanding cash flow hedges are expected to settle	16 months	16 months
Fair value of derivative liabilities	$ 2,600,000			$ 1,200,000
Derivative assets	0			$ 0
Gains and Losses on Derivative Instruments [Member]
Derivative [Line Items]
Cash flow hedges, charge (debit) credit to cost of sales	900,000	$ 700,000
Coffee Futures [Member] | S&D Acquisition [Member]
Derivative [Line Items]
Notional value of derivatives | £			£ 35,400,000		£ 48,100,000
Realized gain (loss) on coffee futures	$ (900,000)	$ 700,000
Coffee Futures [Member] | S&D Acquisition [Member] | Minimum [Member]
Derivative [Line Items]
Future contract period	3 months
Coffee Futures [Member] | S&D Acquisition [Member] | Maximum [Member]
Derivative [Line Items]
Future contract period	16 months