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Consolidated Balance Sheets (Parenthetical) - USD ($)	Sep. 28, 2019	Sep. 29, 2018
Allowance for doubtful accounts receivable	$ 156,145	$ 433,355
Preferred stock, par value	$ 0.05	$ 0.05
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Class A Common Stock [Member]
Common stock, par value	$ 0.05	$ 0.05
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	14,180,485	14,145,385
Common stock, shares outstanding	14,180,485	14,145,385
Class B Common Stock [Member]
Common stock, par value	$ 0.05	$ 0.05
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	6,079,291	6,114,391
Common stock, shares outstanding	6,079,291	6,114,391

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