Liquidity (Details)	Jan. 31, 2025 USD ($) D $ / shares	Jan. 16, 2025 USD ($) $ / shares shares	Dec. 31, 2024 USD ($) shares	Sep. 30, 2024 USD ($)
Accumulated deficit			$ (525,907,286)	$ (543,284,900)
Debt, interest, fees			$ 32,229,130
Common stock issuable on exercise of warrants (in shares) | shares			14,193,772
January 2025 Note | Subsequent Events
Convertible promissory note	$ 33,100,000
Shares exceeding (as a percent)	19.99%
Minimum share price (in dollars per share) | $ / shares	$ 2.26
Number of days available for filing of registration statement | D	7
Number of days for effectiveness of registration statement | D	45
Monthly increase (as a percent)	0.50%
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]	us-gaap:PrimeRateMember
Variable rate (as a percent)	3.00%
Quarterly payment	$ 3,000,000
Exit fee (as a percent)	7.50%
January 2025 Note | Subsequent Events | Minimum
Total interest rate (as a percent)	9.50%
GMS Ventures | Subsequent Events
Net proceeds		$ 15,746,960
Syntone Ventures, LLC | Subsequent Events
Net proceeds		$ 2,400,000
Existing Warrants | GMS Ventures | Subsequent Events
Common stock issuable on exercise of warrants (in shares) | shares		7,074,637
Exercise price per share (in dollars per share) | $ / shares		$ 2.51
Existing Warrants | Syntone Ventures, LLC | Subsequent Events
Common stock issuable on exercise of warrants (in shares) | shares		1,071,429
Exercise price per share (in dollars per share) | $ / shares		$ 2.51
Inducement Warrants | GMS Ventures | Subsequent Events
Common stock issuable on exercise of warrants (in shares) | shares		14,149,274
Exercise price per share (in dollars per share) | $ / shares		$ 2.26
Inducement Warrants | Syntone Ventures, LLC | Subsequent Events
Common stock issuable on exercise of warrants (in shares) | shares		2,142,858
Exercise price per share (in dollars per share) | $ / shares		$ 2.26