Acquisition of American DG Energy Inc. - Additional Information (Details) |
12 Months Ended | ||
|---|---|---|---|
|
May 18, 2017
USD ($)
shares
|
Dec. 31, 2017
USD ($)
|
Dec. 31, 2016
USD ($)
|
|
| Business Acquisition [Line Items] | |||
| Energy production revenue | $ 3,833,940 | $ 0 | |
| Gross profit | 12,954,404 | 9,300,678 | |
| Payment of stock issuance costs | 377,246 | 0 | |
| Shares issued in acquisition (shares) | shares | 4,662,937 | ||
| Goodwill | 13,365,655 | $ 40,870 | |
| Goodwill expected to be tax deductible | $ 0 | ||
| Discount rate used to calculate fair value of noncontrolling interest (percent) | 5.61% | ||
| General and Administrative Expense | |||
| Business Acquisition [Line Items] | |||
| Acquisition related costs | 374,156 | ||
| American DG Energy | |||
| Business Acquisition [Line Items] | |||
| Ownership interest (percent) | 100.00% | ||
| Gross profit | $ 1,799,422 | ||
| Goodwill | $ 13,324,785 | ||
| Common stock | |||
| Business Acquisition [Line Items] | |||
| Conversion ratio of American DG shares to Tecogen shares | 0.092 | ||
| X | ||||||||||
- Definition Conversion Ratio No definition available.
|
| X | ||||||||||
- Definition Payment of Stock Issuance Costs, Acquisition No definition available.
|
| X | ||||||||||
- Definition Number of shares of equity interests issued or issuable to acquire entity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| 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 The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Revenue derived from energy-related services such as supplying various forms of energy from the operation of on-site facilities or cogeneration plants and procurement services provided to energy purchasers. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| 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
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|