Nature of Operations and Summary of Significant Accounting Policies - Inventories (Details) - USD ($) $ in Thousands	Dec. 28, 2019	Dec. 29, 2018
Nature of Operations and Summary of Significant Accounting Policies
Raw materials	$ 3,186	$ 3,622
Work in process	2,177	2,892
Finished goods	36,906	32,608
Inventories	$ 42,269	$ 39,122

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

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

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