STOCK-BASED COMPENSATION - Summary of Stock Option Activity (Details) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 29, 2018 USD ($) $ / shares shares	Jun. 28, 2019 USD ($) $ / shares shares	Jun. 29, 2018 USD ($) $ / shares shares
Number of Options
Outstanding, beginning of period (in shares) | shares		737,145	743,045
Granted (in shares) | shares		20,000	20,000
Exercised (in shares) | shares	(1,400)	(34,000)	(1,400)
Forfeited (in shares) | shares		(24,250)	(90,000)
Expired (in shares) | shares		(5,750)	(10,500)
Outstanding, end of period (in shares) | shares	661,145	693,145	661,145
Wgtd. Avg. Exercise Price
Outstanding, beginning of period (in dollars per share) | $ / shares		$ 4.33	$ 4.27
Granted (in dollars per share) | $ / shares		6.12	4.00
Exercised (in dollars per share) | $ / shares		4.46	4.08
Forfeited (in dollars per share) | $ / shares		3.70	4.75
Expired (in dollars per share) | $ / shares		4.06	5.24
Outstanding, end of period (in dollars per share) | $ / shares	$ 4.18	$ 4.40	$ 4.18
For options expected to vest
Number expected to vest (in shares) | shares	653,922	685,354	653,922
Number expected to vest (in dollars per share) | $ / shares	$ 4.18	$ 4.39	$ 4.18
Weighted average remaining term, in years		3 years 5 months 9 days	3 years 8 months 12 days
Intrinsic value (000s) | $	$ 1,009	$ 1,306	$ 1,009
For exercisable options
Number exercisable (in shares) | shares	450,358	533,645	450,358
Number exercisable (in dollars per share) | $ / shares	$ 4.28	$ 4.18	$ 4.28
Weighted average remaining term, in years		2 years 8 months 1 day	3 years 5 months 1 day
Intrinsic value (000s) | $	$ 721	$ 1,132	$ 721
For non-exercisable options
Expense not yet recognized (000s) | $	$ 205	$ 232	$ 205
Weighted average years to be recognized		3 years 1 month 21 days	1 year 6 months
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value | $		$ 77	$ 2