Note 3 - Stock Based Compensation - Information Related to Stock Options (Details)	3 Months Ended
	Dec. 24, 2022 $ / shares shares
Number of shares (in shares) \| shares	164,900
Weighted-average remaining contractual life (Year)	5 years 8 months 23 days
Outstanding, weighted average exercise price (in dollars per share)	$ 3.45
Exercisable number of shares (in shares) \| shares	108,200
Exercisable weighted-average exercise price (in dollars per share)	$ 4.00
Range 1 [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share)	1.01
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share)	$ 2.00
Number of shares (in shares) \| shares	48,000
Weighted-average remaining contractual life (Year)	8 years 3 months 25 days
Outstanding, weighted average exercise price (in dollars per share)	$ 1.80
Exercisable number of shares (in shares) \| shares	12,000
Exercisable weighted-average exercise price (in dollars per share)	$ 1.87
Range 2 [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share)	2.01
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share)	$ 3.00
Number of shares (in shares) \| shares	34,300
Weighted-average remaining contractual life (Year)	5 years 2 months 1 day
Outstanding, weighted average exercise price (in dollars per share)	$ 2.61
Exercisable number of shares (in shares) \| shares	25,900
Exercisable weighted-average exercise price (in dollars per share)	$ 2.65
Range 3 [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share)	3.01
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share)	$ 4.00
Number of shares (in shares) \| shares	43,500
Weighted-average remaining contractual life (Year)	6 years 4 months 2 days
Outstanding, weighted average exercise price (in dollars per share)	$ 3.60
Exercisable number of shares (in shares) \| shares	33,300
Exercisable weighted-average exercise price (in dollars per share)	$ 3.60
Range 4 [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share)	4.01
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share)	$ 5.00
Number of shares (in shares) \| shares	16,600
Weighted-average remaining contractual life (Year)	1 year 6 months
Outstanding, weighted average exercise price (in dollars per share)	$ 4.34
Exercisable number of shares (in shares) \| shares	16,600
Exercisable weighted-average exercise price (in dollars per share)	$ 4.34
Range 5 [Member]
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share)	5.01
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share)	$ 10.00
Number of shares (in shares) \| shares	22,500
Weighted-average remaining contractual life (Year)	3 years 7 days
Outstanding, weighted average exercise price (in dollars per share)	$ 7.36
Exercisable number of shares (in shares) \| shares	20,400
Exercisable weighted-average exercise price (in dollars per share)	$ 7.37

TECHNICAL COMMUNICATIONS CORP 10-Q