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DEBT - Borrowing Under Term Loan (Details) - Texas Capital Bank, National Association (TCB) - Revolving Credit Facility - Credit Agreement - USD ($)	Sep. 29, 2019	Dec. 30, 2018
Debt Instrument [Line Items]
Long-Term Debt, Gross, Initial Borrowing	$ 0	$ 1,121,000
Debt Instrument, Interest Rate, Effective Percentage for Initial Borrowing Amount	0.00%	6.50%
Long-Term Debt, Gross, Second Borrowing Amount	$ 0	$ 6,500,000
Debt Instrument, Interest Rate, Effective Percentage for Second Borrowing Amount	0.00%	5.41%
Long-Term Debt, Gross, Third Borrowing Amount	$ 0	$ 2,500,000
Debt Instrument, Interest Rate, Effective Percentage for Third Borrowing Amount	0.00%	5.41%
Long-term debt, less current portion	$ 0	$ 10,121,000

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Debt Instrument, Interest Rate, Effective Percentage for Initial Borrowing Amount

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Debt Instrument, Interest Rate, Effective Percentage for Third Borrowing Amount

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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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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