Description of business and basis of presentation - Additional Information (Details) |
3 Months Ended | 9 Months Ended | |||||
|---|---|---|---|---|---|---|---|
May 18, 2017 |
Sep. 30, 2021
USD ($)
|
Sep. 30, 2020
USD ($)
|
Sep. 30, 2019 |
Sep. 30, 2021
USD ($)
segment
|
Sep. 30, 2020
USD ($)
|
Dec. 31, 2019
employee
|
|
| Business Acquisition [Line Items] | |||||||
| Ownerhsip interest in American DG New York, LLC (percent) | 51.00% | 51.00% | |||||
| Number of business segments | segment | 2 | ||||||
| Decrease in gross receipts in quarter (percent) | 20.00% | ||||||
| Average number of employees | employee | 100 | ||||||
| Gain on extinguishment of debt | $ | $ 562,253 | $ 0 | $ 1,276,021 | $ 0 | |||
| American DG Energy, Inc. | |||||||
| Business Acquisition [Line Items] | |||||||
| Ownership interest (percent) | 100.00% | ||||||
| X | ||||||||||
- Definition Number of persons employed by the Entity No definition available.
|
| X | ||||||||||
- Definition Decrease in Gross Receipts No definition available.
|
| X | ||||||||||
- Definition Employee Retention Credit No definition available.
|
| X | ||||||||||
- Definition Percentage Of Owned Joint Venture. No definition available.
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions. No definition available.
|
| X | ||||||||||
- Details
|