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Accounting policies (Tables) | 6 Months Ended
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Jun. 30, 2022
Accounting policies |
Schedule of Disaggregation of revenue | The following table presents the Company’s revenue disaggregated by revenue source. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, |  | Six Months Ended June 30,
​ |  | 2022 |  | 2021 |  | 2022 |  | 2021
Retail revenue | ​ | $ | 6,526,803 | ​ | $ | 5,674,790 | ​ | $ | 12,840,003 | ​ | $ | 11,386,095
Bulk revenue | ​ |  | 8,423,749 | ​ |  | 6,711,971 | ​ |  | 15,774,393 | ​ |  | 12,957,941
Services revenue | ​ |  | 5,055,483 | ​ |  | 3,763,239 | ​ |  | 9,799,303 | ​ |  | 7,304,085
Manufacturing revenue | ​ |  | 1,061,092 | ​ |  | 551,524 | ​ |  | 2,211,333 | ​ |  | 2,156,720
Total revenue | ​ | $ | 21,067,127 | ​ | $ | 16,701,524 | ​ | $ | 40,625,032 | ​ | $ | 33,804,841
​
Summary of revenue recognized and amounts billed on services segment and manufacturing segment contracts in progress | Revenue recognized and amounts billed on contracts in progress are summarized as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, | ​ | December 31 | ​
​ | ​ | 2022 | ​ | 2021 | ​
Revenue recognized to date on contracts in progress |  | $ | 10,234,946 | ​ | $ | 6,109,396 | ​
Amounts billed to date on contracts in progress | ​ |  | (12,905,981) | ​ |  | (6,370,855) | ​
Retainage | ​ | ​ | 543,593 | ​ | ​ | 237,542 | ​
Net contract liability | ​ | $ | (2,127,442) | ​ | $ | (23,917) | ​
Summary of net balances of billings reflected in the accompanying consolidated balance sheet | The above net balances are reflected in the accompanying condensed consolidated balance sheets as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, | ​ | December 31 | ​
​ | ​ | 2022 | ​ | 2021 | ​
Contract assets |  | $ | 1,098,240 |  | $ | 489,961 | ​
Contract liabilities | ​ |  | (3,225,682) | ​ |  | (513,878) | ​
Net contract liability | ​ | $ | (2,127,442) | ​ | $ | (23,917) | ​

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- Definition The tabular disclosure of revenue recognized and amounts billed on services segment and manufacturing segment contracts in progress. + References No definition available. + Details
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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 + Details
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