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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of share options (or share units) exercised during the current period.

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Stock-Based Compensation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Dec. 28, 2021	Dec. 29, 2020	Dec. 29, 2021	Sep. 28, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 95	$ 61
Stock option exercises, shares	5,000	7,984
Proceeds from stock option exercise	$ 6	$ 13
Stock options granted, shares	80,000
Stock options granted, exercise price	$ 3.89			$ 3.63
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option exercises, shares	5,000	7,984
2018 Plan [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance	900,000
2018 Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance	1,050,000
Chief Executive Officer [Member] \| 2018 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted, per-share weighted average fair value	$ 2.65	$ 1.24
Stock options granted, shares	80,000	90,000
Stock options granted, exercise price	$ 5.20		$ 2.33
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate Intrinsic Value, Outstanding	$ 393
Aggregate Intrinsic Value, Exercisable	369
Remaining total unrecognized compensation cost related to unvested stock-based arrangements	$ 265
Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, period for recognition	1 year 8 months 12 days
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Remaining total unrecognized compensation cost related to unvested stock-based arrangements	$ 22
Employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, period for recognition	8 months 12 days
Restricted and Unrestricted Common Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 40
Stock options granted, per-share weighted average fair value	$ 4.35
Stock options granted, shares	9,256