Accounting policies - Disaggregated revenue (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Total Revenue	$ 94,104,972	$ 66,863,502
Contracts in progress
Number of days after consumption billings are considered past due	45 days
Minimum [Member]
Contracts in progress
Number of days after consumption billings are collected	30 days
Maximum [Member]
Contracts in progress
Number of days after consumption billings are collected	45 days
Retail revenue [Member]
Total Revenue	$ 25,954,013	22,104,953
Bulk revenue [Member]
Total Revenue	32,991,066	26,800,869
Services revenue [Member]
Total Revenue	28,835,428	13,884,857
Manufacturing revenue [Member]
Total Revenue	$ 6,324,465	$ 4,072,823