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Acquisition of Dream and WestSoy Brands (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 15, 2021	Jul. 03, 2021	Jun. 27, 2020	Jul. 03, 2021	Jun. 27, 2020
Asset Acquisition [Line Items]
Purchase price allocated to acquired inventories		$ 64,514	$ 33,858	$ 82,108	$ 727
Purchase price allocated to acquired brand name intangible assets		$ 25,073	$ 0	$ 25,073	$ 0
Dream and WestSoy plant-based beverage brands [Member] \| Hain Celestial Group, Inc. [Member]
Asset Acquisition [Line Items]
Cash purchase price	$ 33,000
Final purchase price	31,700
Transaction costs	400
Purchase price allocated to acquired inventories	6,600
Purchase price allocated to acquired brand name intangible assets	$ 25,100
Estimated useful life of intangible assets	15 years
Tranche B Subfacility [Member]
Asset Acquisition [Line Items]
Line of credit facility, maximum borrowing capacity	$ 20,000
Revolving credit facility, term	2 years