Stock-based Compensation Plans (Tables)

6 Months Ended

Mar. 31, 2024

Share-Based Payment Arrangement [Abstract]

Stock-based Compensation Expenses

Stock-based compensation expense was reported as follows in the condensed consolidated statements of operations:

	Three Months Ended March 31,				Six Months Ended March 31,
(In thousands)	2024		2023		2024		2023
Product costs	$	70	$	72	$	142	$	139
Research and development		389		329		759		703
Selling, general and administrative		1,667		1,381		3,193		2,905
Total	$	2,126	$	1,782	$	4,094	$	3,747

Summary of Stock Option Grant Activity

Stock option grant activity was as follows:

	Six Months Ended March 31,
	2024		2023
Stock option grant activity:
Stock options granted		281,000		293,000
Weighted average grant date fair value	$	15.70	$	15.27
Weighted average exercise price	$	33.40	$	35.40