Earnings Per Share - Summary of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 04, 2020	Mar. 30, 2019	Apr. 04, 2020	Mar. 30, 2019
Earnings Per Share [Abstract]
Net loss	$ (639)	$ (673)	$ (1,042)	$ (1,893)
Weighted-average common shares outstanding	26,866,822	26,595,280	26,667,860	26,449,072
Effect of dilutive securities	0	0	0	0
Weighted-average shares and dilutive potential common shares	26,866,822	26,595,280	26,667,860	26,449,072
Basic loss per share	$ (0.02)	$ (0.03)	$ (0.04)	$ (0.07)
Diluted loss per share	$ (0.02)	$ (0.03)	$ (0.04)	$ (0.07)