Stock-Based Compensation and Equity Grants - Stock Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended	12 Months Ended
	Mar. 31, 2026	Sep. 30, 2025
Number of Shares
Options outstanding, beginning (in shares)	937
Granted (in shares)	250
Exercised (in shares)	0
Cancelled (in shares)	(12)
Options outstanding, ending (in shares)	1,175	937
Weighted Average Exercise Price
Options outstanding, beginning (in dollars per share)	$ 9.65
Granted (in dollars per share)	0
Exercised (in dollars per share)	0
Cancelled (in dollars per share)	11.66
Options outstanding, ending (in dollars per share)	$ 8.82	$ 9.65
Weighted Average Remaining Contractual Term
Weighted Average Remaining Contractual Term	6 years 1 month 6 days	5 years 7 months 6 days
Aggregate Intrinsic Value
Aggregate Intrinsic Value	$ 14	$ 10
Vested and exercisable (in shares)	890
Vested and exercisable, weighted average exercise price (in dollars per share)	$ 9.56
Vested and exercisable, weighted average remaining contractual term (in years)	5 years
Vested and exercisable, intrinsic value	$ 14