CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) - USD ($)	Sep. 26, 2020	Dec. 28, 2019
CONSOLIDATED CONDENSED BALANCE SHEETS
Receivables, allowance for doubtful accounts	$ 800	$ 1,900
Unamortized debt issuance costs - Current	13,900	13,900
Unamortized debt issuance costs - Noncurrent	$ 58,300	$ 68,700
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	3,735,437	3,947,858
Common stock, shares outstanding	3,735,437	3,947,858

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

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Face amount per share of no-par value 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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Amount, after accumulated amortization, of debt issuance costs classified as current. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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