Hedging Transactions and Derivative Financial Instruments - Additional Information (Detail)	12 Months Ended
	Dec. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 30, 2017 GBP (£)	Dec. 31, 2016 GBP (£)
Derivative [Line Items]
Period over which outstanding cash flow hedges are expected to settle	12 months	12 months
Realized (gain) loss on coffee futures		$ 5,800,000
Fair value of derivative liabilities	$ 1,200,000	6,100,000
Derivative assets	0	0
Gains and Losses on Derivative Instruments [Member]
Derivative [Line Items]
Cash flow hedges, charge (credit) to cost of sales	$ 1,300,000
Coffee Futures [Member] | S&D Acquisition [Member]
Derivative [Line Items]
Notional value of derivatives | £			£ 48,100,000	£ 44,900,000
Realized (gain) loss on coffee futures		$ 1,300,000
Coffee Futures [Member] | S&D Acquisition [Member] | Minimum [Member]
Derivative [Line Items]
Future contract period	3 years
Coffee Futures [Member] | S&D Acquisition [Member] | Maximum [Member]
Derivative [Line Items]
Future contract period	12 years