Balance sheet information - Inventory (Details) - USD ($) $ in Thousands	Apr. 02, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Raw materials and supplies	$ 14,324	$ 12,213
Finished goods	51,669	50,805
Gross	65,993	63,018
Excess and obsolete reserves	(1,302)	(1,330)
Inventory, net	$ 64,691	$ 61,688

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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Amount of valuation reserve for inventory.

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