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CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands | Oct. 02, 2021 | Jan. 02, 2021
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Statement of Financial Position [Abstract] |  |
Allowance for doubtful accounts receivable | $ 4,471 | $ 4,123
Debt discount, current | 0 | 74
Debt discount, noncurrent | $ 3,608 | $ 8,936
Common stock, par value (in dollars per share) | $ 0.01 | $ 0.01
Common stock, shares authorized (in shares) | 20,000,000 | 20,000,000
Common stock, shares outstanding (in shares) | 9,723,838 | 9,462,774

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