Supplemental Balance Sheet Disclosures - Intangible assets (Details) - USD ($)	3 Months Ended				6 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023
Finite-Lived Intangible Assets, Net
Accumulated Impairment	$ (44,400)				$ (44,400)		$ (44,400)
Accumulated Amortization	(1,443,785)				(1,443,785)		(906,785)
Intangible asset amortization expense	268,500		$ 0		537,000	$ 0
Intangible Assets, Net (Excluding Goodwill)
Gross Carrying Value	17,136,506				17,136,506		17,136,506
Accumulated Impairment	(44,400)				(44,400)		(44,400)
Accumulated Amortization	(1,443,785)				(1,443,785)		(906,785)
Net Carrying Value	15,648,321				15,648,321		16,185,321
Customer relationships acquired from the Transaction
Finite-Lived Intangible Assets, Net
Gross Carrying Value	10,740,000				10,740,000		10,740,000
Accumulated Amortization	(805,500)				(805,500)		(268,500)
Total	$ 9,934,500				$ 9,934,500		10,471,500
Estimated weighted average life	9 years 3 months		9 years 3 months		9 years 3 months	9 years 3 months
Intangible Assets, Net (Excluding Goodwill)
Accumulated Amortization	$ (805,500)				$ (805,500)		(268,500)
Licensing and certification rights
Finite-Lived Intangible Assets, Net
Gross Carrying Value	696,506				696,506		696,506
Accumulated Impairment	(44,400)				(44,400)		(44,400)
Accumulated Amortization	(638,285)				(638,285)		(638,285)
Total	13,821				13,821		13,821
Impairment charges		$ 0		$ 0	0	$ 0
Intangible Assets, Net (Excluding Goodwill)
Accumulated Impairment	(44,400)				(44,400)		(44,400)
Accumulated Amortization	(638,285)				(638,285)		(638,285)
Licensing and certification rights
Indefinite-Lived Intangible Assets (Excluding Goodwill)
Gross Carrying Value	5,700,000				5,700,000		5,700,000
Net Carrying Value	5,700,000				5,700,000		$ 5,700,000
Honeywell International, Inc | Asset Purchase and License Agreement (the "Honeywell Agreement") | Customer relationships acquired from the Transaction
Finite-Lived Intangible Assets, Net
Impairment charges	$ 0				$ 0