CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) - USD ($)	Mar. 28, 2020	Dec. 28, 2019
CONSOLIDATED CONDENSED BALANCE SHEETS
Receivables, allowance for doubtful accounts	$ 2,100	$ 1,900
Unamortized debt issuance costs - Current	13,900	13,900
Unamortized debt issuance costs - Noncurrent	$ 65,200	$ 68,700
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	3,650,753	3,947,858
Common stock, shares outstanding	3,650,753	3,947,858