INCOME (LOSS) PER SHARE Earnings Per Share - Summary of Shares Used in EPS Calculation (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Dec. 27, 2019 USD ($) $ / shares shares	Dec. 28, 2018 USD ($) $ / shares shares
Earnings Per Share [Abstract]
Common stock, number of classes	2
Basic net income per share:
Net income | $	$ 1,189	$ 1,072
Less: Income attributable to non-vested shares | $	10	10
Net income available to common stockholders | $	$ 1,179	$ 1,062
Basic (in shares)	10,365,766	10,262,397
Basic net income (loss) per share (in usd per share) | $ / shares	$ 0.11	$ 0.10
Diluted net income per share:
Net income | $		$ 1,072
Shares used in computing basic net income (loss) per share(in shares)	10,365,766	10,262,397
Dilutive effect of non-vested shares	330,211	233,032
Shares used in computing diluted net income per share	10,695,977	10,495,429
Diluted net income (loss) per share (in usd per share) | $ / shares	$ 0.11	$ 0.10
Anti-dilutive shares excluded (in shares)	0	17,000