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UNAUDITED CONSOLIDATED BALANCE SHEETS - Parenthetical - USD ($)
Mar. 29, 2020
Dec. 29, 2019
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts receivable, current $ 518,481 $ 468,233
Preferred stock, par value (in USD per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 500,000 500,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value (in USD per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 19,500,000 19,500,000
Common stock, shares issued (in shares) 10,306,986 10,309,236
Common stock, shares outstanding (in shares) 10,306,986 10,309,236
Treasury stock, shares outstanding (in shares) 1,004 1,004
Deferred finance costs, line of credit arrangements, net $ 324,185 $ 351,128