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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 27, 2020	Dec. 29, 2019
Statement Of Financial Position [Abstract]
Allowances on accounts receivable	$ 47	$ 202
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	200,000,000	200,000,000
Common stock, outstanding	24,323,000	23,638,000
Treasury stock, shares	9,612,000	9,465,000

X

- Definition

Amount of allowance for credit loss on accounts receivable, classified as current.

+ References

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-Topic 210
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Face amount or stated value per share of common stock.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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