Supplemental lease information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Right-of-use asset	$ 9,565,700	$ 10,109,154
Short-term operating lease liability (included in Other current liabilities)	$ 2,253,994	$ 1,501,539
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other current liabilities	Other current liabilities
Long-term operating lease liability	$ 8,675,477	$ 9,145,049
Operating Lease, Weighted Average Remaining Lease Term	8 years 10 months 24 days	9 years
Weighted average discount rate	8.30%	8.25%
Cash paid for amounts included in the measurement of lease liabilities for operating lease	$ 1,617,645	$ 1,164,234
Right-of-use assets obtained in exchange for lease obligation	$ 998,821	$ 11,171,471