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Accounting policies (Tables) | 3 Months Ended
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Mar. 31, 2022
Accounting policies |
Schedule of Disaggregation of revenue | The following table presents the Company’s revenue disaggregated by revenue source. ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended March 31, |
​ |  | 2022 |  | 2021 |
Retail revenue | ​ | $ | 6,313,200 | ​ | $ | 5,711,305 | ​
Bulk revenue | ​ |  | 7,350,644 | ​ |  | 6,245,970 | ​
Services revenue | ​ |  | 4,743,820 | ​ |  | 3,540,846 | ​
Manufacturing revenue | ​ |  | 1,150,241 | ​ |  | 1,605,196 | ​
Total revenue | ​ | $ | 19,557,905 | ​ | $ | 17,103,317 | ​
​
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:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31 | ​
​ | ​ | 2022 | ​ | 2021 | ​
Revenue recognized to date on contracts in progress |  | $ | 8,073,714 | ​ | $ | 6,109,396 | ​
Amounts billed to date on contracts in progress | ​ |  | (8,071,419) | ​ |  | (6,370,855) | ​
Retainage | ​ | ​ | 246,815 | ​ | ​ | 237,542 | ​
Net contract asset (liability) | ​ | $ | 249,110 | ​ | $ | (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:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31 | ​
​ | ​ | 2022 | ​ | 2021 | ​
Contract assets |  | $ | 828,962 |  | $ | 489,961 | ​
Contract liabilities | ​ |  | (579,852) | ​ |  | (513,878) | ​
Net contract asset (liability) | ​ | $ | 249,110 | ​ | $ | (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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