Options and warrants - Options and warrants outstanding and exercisable (Details 1) (Stock Options and Warrants, USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding Options and Warrants, Number Outstanding	5,405,413	5,405,413	3,215,413
Exercisable Options and Warrants, Number Exercisable	5,405,413	5,405,413
Stock Option and Warrant Exercise Price $ 0.10 - $ 2.00
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding Options and Warrants, Number Outstanding	5,405,413
Outstanding Options and Warrants, Weighted Average Remaining Life	2 years 10 months 13 days
Outstanding Options and Warrants, Weighted Average Price	0.29
Exercisable Options and Warrants, Weighted Average Remaining Life	2 years 10 months 13 days
Exercisable Options and Warrants, Number Exercisable	5,405,413
Exercisable Options and Warrants, Weighted Average Price	0.29

This element represents number of stock option and warrants exercisable.

No definition available.

Name:	tteg_ShareBasedCompensationArrangementByShareBasedPaymentAwardStockOptionAndWarrantExercisableNumber
Namespace Prefix:	tteg_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents exercise price of number of stock option and warrants exercisable.

+ References

No definition available.

+ Details

Name:	tteg_ShareBasedCompensationArrangementByShareBasedPaymentAwardStockOptionAndWarrantExercisableWeightedAverageExercisePrice
Namespace Prefix:	tteg_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents weighted average remaining life of shares and option reserved for issuance under stock option agreements awarded under the plan that validly exist and are exercisable as of the balance sheet date, including vested options.

+ References

No definition available.

+ Details

Name:	tteg_ShareBasedCompensationArrangementByShareBasedPaymentAwardStockOptionAndWarrantExercisableWeightedAverageRemainingLife
Namespace Prefix:	tteg_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents number of shares and option reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

+ References

No definition available.

+ Details

Name:	tteg_ShareBasedCompensationArrangementByShareBasedPaymentAwardStockOptionAndWarrantOutstandingNumber
Namespace Prefix:	tteg_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

This element represents exercise price of stock option and warrants outstanding.

+ References

No definition available.

+ Details

Name:	tteg_ShareBasedCompensationArrangementByShareBasedPaymentAwardStockOptionAndWarrantOutstandingWeightedAverageExercisePrice
Namespace Prefix:	tteg_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

This element represents weighted average remaining life of shares and option reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

+ References

No definition available.

+ Details

Name:	tteg_ShareBasedCompensationArrangementByShareBasedPaymentAwardStockOptionAndWarrantOutstandingWeightedAverageRemainingLife
Namespace Prefix:	tteg_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration