Hedging Transactions and Derivative Financial Instruments - Additional Information (Detail) lb in Millions	3 Months Ended		12 Months Ended
	Mar. 30, 2019 USD ($) lb	Mar. 31, 2018 USD ($)	Dec. 29, 2018 USD ($) lb
Derivative [Line Items]
Cost of sales	$ 291,200,000	$ 287,300,000
Fair value of derivative liabilities	17,100,000		$ 10,900,000
Fair value of derivative instruments			$ 0
Gains and Losses on Derivative Instruments | Reclassification Out of Accumulated Other Comprehensive (Loss) Income
Derivative [Line Items]
Cost of sales	(2,600,000)	(900,000)
Coffee Futures
Derivative [Line Items]
Loss to be reclassified	$ 16,200,000
Coffee Futures | Crystal Rock Acquisition
Derivative [Line Items]
Notional amount of derivatives (in pounds) | lb	104.7		73.3
Coffee Futures | Crystal Rock Acquisition | Minimum
Derivative [Line Items]
Future contract period	2 months
Coffee Futures | Crystal Rock Acquisition | Maximum
Derivative [Line Items]
Future contract period	21 months
Coffee Futures | Gains and Losses on Derivative Instruments | Crystal Rock Acquisition | Reclassification Out of Accumulated Other Comprehensive (Loss) Income
Derivative [Line Items]
Cost of sales	$ 2,600,000	900,000
Cost of Sales | Coffee Futures | Gains and Losses on Derivative Instruments
Derivative [Line Items]
Loss (gain) reclassified from AOCI into expense	$ (2,600,000)	$ (900,000)