Stock-based Compensation Plans (Tables)

3 Months Ended

Dec. 31, 2021

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)	2021		2020
Product costs	$	30	$	37
Research and development		453		284
Selling, general and administrative		1,197		1,112
Total	$	1,680	$	1,433

Summary of Stock Option Grant Activity

Stock option grant activity was as follows:

	Three Months Ended
	December 31,
	2021		2020
Stock option grant activity:
Stock options granted		245,000		217,000
Weighted average grant date fair value	$	16.36	$	13.42
Weighted average exercise price	$	43.93	$	37.44