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CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 30, 2018
--- | --- | ---
Allowance for doubtful accounts | $ 4,392 | $ 5,026
Preferred stock, par value (in dollars per share) | $ 0.131 | $ 0.131
Preferred stock, shares authorized | 20,000,000 | 20,000,000
Preferred stock, shares issued | 0 | 0
Preferred stock, shares outstanding | 0 | 0
Common stock, par value (in dollars per share) | $ 0 | $ 0
Common stock, shares authorized | 100,000,000 | 100,000,000
Common stock, shares issued | 40,058,000 | 40,054,000
Common stock, shares outstanding | 40,058,000 | 40,054,000

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