Stock-based Compensation Plans (Tables)

3 Months Ended

Dec. 31, 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
	December 31,
(In thousands)	2022		2021
Product costs	$	67	$	30
Research and development		374		453
Selling, general and administrative		1,524		1,197
Total	$	1,965	$	1,680

Summary of Stock Option Grant Activity

Stock option grant activity was as follows:

	Three Months Ended December 31,
	2022		2021
Stock option grant activity:
Stock options granted		269,000		245,000
Weighted average grant date fair value	$	15.53	$	16.36
Weighted average exercise price	$	35.97	$	43.93