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CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands | Sep. 29, 2018 | Dec. 30, 2017
--- | --- | ---
Statement of Financial Position [Abstract] |  |
Allowance for doubtful accounts receivable | $ 4,278 | $ 2,761
Debt discount, current | 64 | 0
Debt discount, noncurrent | $ 13,280 | $ 3,792
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 issued (in shares) | 9,288,673 | 9,100,923
Common stock, shares outstanding (in shares) | 9,288,673 | 9,100,923

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