NET INCOME PER SHARE Earnings Per Share - Summary of Shares Used in EPS Calculation (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Jan. 01, 2021 USD ($) $ / shares shares	Dec. 27, 2019 USD ($) $ / shares shares
Earnings Per Share [Abstract]
Common stock, number of classes	2
Basic net income per share:
Net income | $	$ 1,537	$ 1,189
Less: Income attributable to non-vested shares | $	(8)	(10)
Net income available to common stockholders | $	$ 1,529	$ 1,179
Basic (in shares)	10,524,842	10,365,766
Basic net income (loss) per share (in usd per share) | $ / shares	$ 0.15	$ 0.11
Diluted net income per share:
Net income | $		$ 1,189
Shares used in computing basic net income (loss) per share(in shares)	10,524,842	10,365,766
Dilutive effect of options and non-vested shares	396,024	330,211
Shares used in computing diluted net income per share	10,920,866	10,695,977
Diluted net income (loss) per share (in usd per share) | $ / shares	$ 0.14	$ 0.11
Anti-dilutive shares excluded (in shares)	1,935	0