Note 4 - Acquisitions (Details Textual) - USD ($) $ in Thousands			3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2021	Oct. 27, 2021	Jan. 01, 2023	Dec. 26, 2021	Jan. 01, 2023	Dec. 26, 2021	Sep. 30, 2021	Dec. 31, 2020	Jul. 03, 2022	Jun. 27, 2021
Revenue from Contract with Customer, Excluding Assessed Tax, Total			$ 897,877	$ 943,044	$ 1,201,481	$ 1,252,417
Goodwill, Ending Balance			213,999	$ 213,999	$ 213,999	$ 213,999			$ 213,287	$ 213,287
Customer Lists [Member]
Finite-Lived Intangible Asset, Useful Life (Year)					10 years
Vital Choice [Member]
Revenue from Contract with Customer, Excluding Assessed Tax, Total								$ 27,800
Vital Choice [Member]
Business Combination, Consideration Transferred, Total		$ 20,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total		9,800	9,200		$ 9,200
Goodwill, Ending Balance		4,383	5,017		5,017
Vital Choice [Member] | Trade Names [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total		4,900
Goodwill, Ending Balance		5,000
Vital Choice [Member] | Customer Lists [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total		$ 4,300
Finite-Lived Intangible Asset, Useful Life (Year)		5 years
Alice's Table, Inc. [Member]
Business Combination, Consideration Transferred, Total	$ 1,300
Revenue from Contract with Customer, Excluding Assessed Tax, Total							$ 3,800
Goodwill, Ending Balance			800		800
Payments to Acquire Businesses, Gross	800
Business Combination, Consideration Transferred, Other	300
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value	$ 300
Business Combination, Step Acquisition, Equity Interest in Acquiree, Including Subsequent Acquisition, Percentage	100.00%
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Loss	$ 700
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue			200		200
Alice's Table, Inc. [Member] | Trademarks [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets			$ 500		500
Alice's Table, Inc. [Member] | Customer Lists [Member]
Finite-Lived Intangible Asset, Useful Life (Year)			4 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			$ 200		$ 200