Debt (Schedule Of Long-Term Debt) (Details) - USD ($) $ in Thousands	Dec. 28, 2019	Dec. 29, 2018
Debt
Notes Payable	$ 412	$ 376
Unamortized debt discounts and issuance costs	(440)	(920)
Debt outstanding	16,205	17,722
Less: current portion	(412)	(376)
Long-term debt	15,793	17,346
Senior Secured Convertible Note Due December 2025 [member]
Debt
Debt outstanding	16,233	15,934
Accrued interest	1,233	934
Unsecured Convertible Note Due August 2020
Debt
Notes Payable	$ 0	2,300
Debt outstanding		2,332
Accrued interest		$ 62

Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.

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The portion of the carrying value of long-term convertible debt as of the balance sheet date that is scheduled to be repaid within one year or in the normal operating cycle if longer. Convertible debt is a financial instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount of interest payable on debt, including, but not limited to, trade payables.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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