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Demand note payable and convertible debentures - related party (Details) (Convertible debentures, USD $)
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12 Months Ended | 3 Months Ended | 12 Months Ended | |
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Dec. 31, 2012
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Dec. 31, 2013
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Dec. 31, 2013
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Dec. 31, 2014
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Common stock
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| Debt Instrument [Line Items] | ||||
| Common stock issuable upon conversion |
555,556us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments / us-gaap_LongtermDebtTypeAxis = tcgn_ConvertibleUnsecuredDebtMember / us-gaap_StatementClassOfStockAxis = us-gaap_CommonStockMember |
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Michaelson Capital Special Finance Fund LP. [Member]
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| Debt Instrument [Line Items] | ||||
| Related party debt, stated interest rate |
4.00%us-gaap_RelatedPartyTransactionRate / us-gaap_LongtermDebtTypeAxis = tcgn_ConvertibleUnsecuredDebtMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = tcgn_MichaelsonCapitalSpecialFinanceFundLP.Member |
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| Conversion price in usd per share |
$ 5.40us-gaap_DebtInstrumentConvertibleConversionPrice1 / us-gaap_LongtermDebtTypeAxis = tcgn_ConvertibleUnsecuredDebtMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = tcgn_MichaelsonCapitalSpecialFinanceFundLP.Member |
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| Debt conversion, amount converted |
$ 1,000us-gaap_DebtConversionOriginalDebtAmount1 / us-gaap_LongtermDebtTypeAxis = tcgn_ConvertibleUnsecuredDebtMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = tcgn_MichaelsonCapitalSpecialFinanceFundLP.Member |
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| Convertible debentures, related party, current |
3,000,000tcgn_ConvertibleDebentureRelatedPartiesCurrent / us-gaap_LongtermDebtTypeAxis = tcgn_ConvertibleUnsecuredDebtMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = tcgn_MichaelsonCapitalSpecialFinanceFundLP.Member |
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| Debt Instrument, Term | 3 years | |||
| Debt Instrument, Convertible, Accrue Rate After Occurrence and During Continuance |
8.00%tcgn_DebtInstrumentConvertibleAccrueRateAfterOccurrenceandDuringContinuance / us-gaap_LongtermDebtTypeAxis = tcgn_ConvertibleUnsecuredDebtMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = tcgn_MichaelsonCapitalSpecialFinanceFundLP.Member |
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| Debt Instrument, Convertible, Accrue Rate After Occurrence and During Continuance, Other Default |
2.00%tcgn_DebtInstrumentConvertibleAccrueRateAfterOccurrenceandDuringContinuanceOtherDefault / us-gaap_LongtermDebtTypeAxis = tcgn_ConvertibleUnsecuredDebtMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = tcgn_MichaelsonCapitalSpecialFinanceFundLP.Member |
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| Debt Instrument, Convertible, Threshold Consecutive Trading Days | 20 days | |||
| Debt Instrument, Convertible, If-converted Value in Excess of Principal |
150,000us-gaap_DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal / us-gaap_LongtermDebtTypeAxis = tcgn_ConvertibleUnsecuredDebtMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = tcgn_MichaelsonCapitalSpecialFinanceFundLP.Member |
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| Debt Instrument, Repurchase, Percentage of Principal and Interest |
120.00%tcgn_DebtInstrumentRepurchasePercentageofPrincipalandInterest / us-gaap_LongtermDebtTypeAxis = tcgn_ConvertibleUnsecuredDebtMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = tcgn_MichaelsonCapitalSpecialFinanceFundLP.Member |
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| Debt Issuance Cost |
$ 147,577us-gaap_DebtIssuanceCosts / us-gaap_LongtermDebtTypeAxis = tcgn_ConvertibleUnsecuredDebtMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = tcgn_MichaelsonCapitalSpecialFinanceFundLP.Member |
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Michaelson Capital Special Finance Fund LP. [Member] | Common stock
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| Debt Instrument [Line Items] | ||||
| Debt conversion, number of shares issued |
185.19us-gaap_DebtConversionConvertedInstrumentSharesIssued1 / us-gaap_LongtermDebtTypeAxis = tcgn_ConvertibleUnsecuredDebtMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = tcgn_MichaelsonCapitalSpecialFinanceFundLP.Member / us-gaap_StatementClassOfStockAxis = us-gaap_CommonStockMember |
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| Common stock issuable upon conversion |
555,556us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments / us-gaap_LongtermDebtTypeAxis = tcgn_ConvertibleUnsecuredDebtMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = tcgn_MichaelsonCapitalSpecialFinanceFundLP.Member / us-gaap_StatementClassOfStockAxis = us-gaap_CommonStockMember |
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- Definition
Convertible Debenture, Related Parties, Current No definition available.
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- Definition
Debt Instrument, Convertible, Accrue Rate After Occurrence and During Continuance No definition available.
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- Definition
Debt Instrument, Convertible, Accrue Rate After Occurrence and During Continuance, Other Default No definition available.
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- Definition
Debt Instrument, Repurchase, Percentage of Principal and Interest No definition available.
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- Definition
The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The price per share of the conversion feature embedded in the debt instrument. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount by which the convertible debt's if-converted value exceeds its principle amount at the balance sheet date, regardless of whether the instrument is currently convertible. This element applies to public companies only. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The number of equity instruments that the holder of the debt instrument would receive if the debt was converted to equity. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instruments must exceed threshold percentage for a specified number of trading days to trigger conversion feature, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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- Details
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- Definition
Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available.
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- Definition
Amount of debt issuance costs (for example, but not limited to, legal, accounting, broker, and regulatory fees). No definition available.
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- Definition
Identify the stated interest rate per the agreement, for example, leasing and debt arrangements between related parties. No definition available.
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