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DEBT (Schedule of Long Term Debt) (Details) - Credit Agreement - Long-term Debt - USD ($)	Jan. 21, 2020	Dec. 29, 2019	Dec. 30, 2018
BMO Harris Bank, N.A.
Debt Instrument [Line Items]
Long-term debt, gross, initial borrowing		$ 7,500,000
Long-term debt, gross, second borrowing amount		0
Long-term debt, gross		$ 7,500,000
Texas Capital Bank, National Association (TCB)
Debt Instrument [Line Items]
Long-term debt, gross, initial borrowing			$ 1,121,000
Interest rate, initial borrowing amount		5.25%	6.50%
Long-term debt, gross, second borrowing amount			$ 9,000,000
Interest rate, second borrowing amount		0.00%	5.41%
Long-term debt, gross			$ 10,121,000
Subsequent Event | Texas Capital Bank, National Association (TCB)
Debt Instrument [Line Items]
Effective percentage	3.16%

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Debt Instrument, Interest Rate, Effective Percentage for Initial 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.

+ References

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-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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