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Note 11 - Stock-based Compensation (Tables)

3 Months Ended

Dec. 31, 2024

Notes Tables

Share-Based Payment Arrangement, Cost by Plan [Table Text Block]

​		Three Months Ended December 31,
​		2024				2023
Restricted stock units		$	4,615			$	2,649
Employee stock purchase plan			257				352
Total stock-based compensation expense		$	4,872			$	3,001

Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]

​		​				Weighted
​		​				Average
​		​				Grant-Date
​		Shares				Fair Value
Outstanding as of September 30, 2024			764,111			$	59.65
Granted			519,862			$	47.14
Vested			(121,804	)		$	61.96
Forfeited			(59,923	)		$	94.75
Outstanding as of December 31, 2024			1,102,246			$	51.21

​		Three Months Ended December 31,
​		2024				2023
Time-based restricted stock units			364,173				199,316
Performance-based restricted stock units			155,689				388,532
Total units			519,862				587,848

X

- Definition

Tabular disclosure of cost recognized for award under share-based payment arrangement by plan. Includes, but is not limited to, related tax benefit.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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X

- Definition

Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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