Stock-based Compensation Plans (Tables)

9 Months Ended

Jun. 30, 2022

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-based Compensation Expenses

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

	Three Months Ended				Nine Months Ended
	June 30,				June 30,
(In thousands)	2022		2021		2022		2021
Product costs	$	62	$	23	$	170	$	92
Research and development		355		329		1,086		918
Selling, general and administrative		1,382		1,104		3,942		3,308
Total	$	1,799	$	1,456	$	5,198	$	4,318

Summary of Stock Option Grant Activity

Stock option grant activity was as follows:

	Nine Months Ended June 30,
	2022		2021
Stock option grant activity:
Stock options granted		312,000		244,000
Weighted average grant date fair value	$	16.11	$	14.08
Weighted average exercise price	$	42.78	$	39.24