Annual report pursuant to Section 13 and 15(d)

Loss per common share - Schedule of Loss Per Common Share, Basic and Diluted (Details)

v2.4.1.9
Loss per common share - Schedule of Loss Per Common Share, Basic and Diluted (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Loss available to stockholders $ (3,745,812)us-gaap_NetIncomeLoss $ (3,449,489)us-gaap_NetIncomeLoss
Weighted average shares outstanding - Basic and diluted 15,607,897us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted 13,385,155us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted
Basic and diluted loss per share (usd per share) $ (0.24)us-gaap_EarningsPerShareBasicAndDiluted $ (0.26)us-gaap_EarningsPerShareBasicAndDiluted
Stock Options    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive shares underlying stock options outstanding 1,356,325us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_EmployeeStockOptionMember
1,148,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_EmployeeStockOptionMember
Anti-dilutive convertible debentures 1,356,325us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_EmployeeStockOptionMember
1,148,000us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= us-gaap_EmployeeStockOptionMember
Convertible Debenture    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Anti-dilutive shares underlying stock options outstanding 555,556us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= tcgn_ConvertibleDebentureMember
555,556us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= tcgn_ConvertibleDebentureMember
Anti-dilutive convertible debentures 555,556us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= tcgn_ConvertibleDebentureMember
555,556us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= tcgn_ConvertibleDebentureMember