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Stock-based compensation - Stock-Based Compensation (Details) (USD $)
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3 Months Ended | |
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Mar. 31, 2015
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Mar. 31, 2014
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Share-based Compensation | $ 93,254us-gaap_ShareBasedCompensation | $ 32,491us-gaap_ShareBasedCompensation |
| Tecogen | Amended Plan | Stock Options | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Shares of common stock reserved for future issuance |
3,838,750us-gaap_CommonStockCapitalSharesReservedForFutureIssuance / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_PlanNameAxis = tcgn_AmendnedStockOptionAndIncentivePlan2006Member |
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| Number of shares remaining available for future issuance |
1,748,783us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant / us-gaap_AwardTypeAxis = us-gaap_EmployeeStockOptionMember / dei_LegalEntityAxis = us-gaap_ParentCompanyMember / us-gaap_PlanNameAxis = tcgn_AmendnedStockOptionAndIncentivePlan2006Member |
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| Ilois | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition | 1 year 1 month 20 days | |
| Ilois | 2009 Plan | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Maximum number of shares allowable for issuance |
2,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized / dei_LegalEntityAxis = tcgn_IloisMember / us-gaap_PlanNameAxis = tcgn_StockIncentivePlan2009Member |
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- Definition
Aggregate number of common shares reserved for future issuance. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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