Note K - Stock-based Compensation (Tables)

12 Months Ended

Sep. 30, 2023

Notes Tables

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

	Incentive Stock Options					Nonqualified Stock Options
				Weighted-					Weighted-
	Stock			Average		Stock			Average
	Options			Exercise		Options			Exercise
	Outstanding			Price		Outstanding			Price
Balance, September 26, 2020		470,420			136.62		346,442			122.04
Granted		111,862			165.53		43,970			160.14
Exercised		(102,976	)		120.83		(55,453	)		120.92
Canceled		(31,684	)		143.74		(41,222	)		95.95
Balance, September 25, 2021		447,622			146.98		293,737			132.29
Granted		103,405			132.38		11,545			132.38
Exercised		(67,782	)		131.35		(60,581	)		107.17
Canceled		(49,886	)		150.85		(16,383	)		151.50
Balance, September 24, 2022		433,359			146.98		228,318			132.29
Granted		-			-		-			-
Exercised		(83,401	)		140.30		(11,294	)		137.81
Canceled		(78,137	)		143.96		(5,646	)		153.04
Balance, September 30, 2023		271,821			147.45		211,378			140.79
Exercisable Options September 30, 2023		102,158			145.91		161,128			136.55

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

				Weighted-		Weighted-
				Average		Average
	Number of			Grant-Date		Remaining		Aggregate
	Performance			Fair Value		Contractual		Intrinsic
	Share Unites			Per Share		Life		Value
Balance, September 25, 2021		-			-		-
Granted		9,200			154.85
Vested		-			-
Canceled		-			-
Balance, September 24, 2022		9,200			154.85		2.1
Granted		21,864			154.32
Vested		(3,165	)		154.94
Canceled		-			-
Balance, September 30, 2023		27,899			154.46		2.2		4,566

Schedule of Nonvested Performance-Based Units Activity [Table Text Block]

				Weighted-		Weighted-
				Average		Average
	Number of			Grant-Date		Remaining		Aggregate
	Performance			Fair Value		Contractual		Intrinsic
	Share Unites			Per Share		Life		Value
Balance, September 25, 2021		-			-		-
Granted		8,868			155.01
Vested		-			-
Canceled		-			-
Balance, September 24, 2022		8,868			155.01		2.1
Granted		21,260			155.29
Vested		-			-
Canceled (1)		(8,868	)		155.01
Balance, September 30, 2023		21,260			155.29		2.2		3,479

Incentive Stock Options [Member]

Notes Tables

Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block]

			Options Outstanding						Options Exercisable
			Number		Weighted-				Number
			Outstanding		Average		Weighted-		Outstanding		Weighted-
			at		Remaining		Average		at		Average
Range of			September 30,		Contractual		Exercise		September 30,		Exercise
Exercise Prices			2023		Life		Price		2023		Price
$125.83	-	$158.97		136,548		3.0	$	130.26		48,508	$	126.27
$163.29	-	$192.13		135,273		1.8	$	164.81		53,650	$	163.67
Total options				271,821						102,158		145.91

			Options Outstanding						Options Exercisable
			Number		Weighted-				Number
			Outstanding		Average		Weighted-		Outstanding		Weighted-
			at		Remaining		Average		at		Average
Range of			September 30,		Contractual		Exercise		September 30,		Exercise
Exercise Prices			2023		Life		Price		2023		Price
$94.24	-	$119.44		60,000		2.0	$	110.51		60,000	$	110.51
$125.83	-	$153.65		91,544		4.5	$	139.28		61,784	$	135.71
$163.29	-	$191.40		59,834		3.1	$	173.46		39,344	$	177.58
Total options				211,378						161,128		136.55