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Leases - Lease term, discount rate, and other information (Details) - USD ($)	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Weighted-average remaining lease terms (in years):
Operating lease	6 years 3 months		6 years 8 months 12 days
Finance lease	9 months		1 year 3 months 18 days
Weighted-average discount rate:
Operating lease	7.80%		7.80%
Finance lease	7.80%		7.80%
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows - operating leases	$ 250,448	$ 252,997
Operating cash flows - finance leases	0	3,526
Financing cash flows - finance leases	7,591	5,477
Leased assets obtained in exchange for new finance lease liabilities	4,651	9,925
Leased assets obtained in exchange for new operating lease liabilities	$ 0	$ 0

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