Note 12 - Stock-based Compensation (Tables)

12 Months Ended

Sep. 30, 2023

Notes Tables

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

	Year Ended
	September 2023					September 2022
	Number of Units			Weighted average grant date fair value		Number of Units			Weighted average grant date fair value
Units outstanding, beginning of fiscal period		385,250		$	27.85		260,000		$	20.38
Units granted		26,000		$	10.61		319,950		$	30.09
Units issued		(105,000	)	$	21.04		(144,700	)	$	19.42
Units forfeited		(98,624	)	$	27.35		(50,000	)	$	27.72
Units outstanding, end of fiscal period		207,626		$	29.37		385,250		$	27.85

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

Restricted Stock Units/Performance Units	Number of Units		Average Market Price on Date of Grant		Vesting Date*
Fiscal Year 2023 Restricted Units		95,626	$	29.07	November 2023
Fiscal Year 2024 Restricted Units		94,000	$	31.19	November 2024
Fiscal Year 2024 Performance Units		16,000	$	22.82	November 2024
Fiscal Year 2025 Restricted Units		1,000	$	10.61	November 2025
Fiscal Year 2025 Performance Units		1,000	$	10.61	November 2025
		207,626