Name:	dtgi_ShareBasedCompensationArrangementByShareBasedPaymentAwardWarrantCancelledInPeriodGross
Namespace Prefix:	dtgi_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Number of share warrants (or share units) exercised during the current period.

No definition available.

Name:	dtgi_ShareBasedCompensationArrangementByShareBasedPaymentAwardWarrantExercisedInPeriodGross
Namespace Prefix:	dtgi_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Gross number of share warrant (or share units) granted during the period.

No definition available.

Name:	dtgi_ShareBasedCompensationArrangementByShareBasedPaymentAwardWarrantGrantsInPeriodGross
Namespace Prefix:	dtgi_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Number of warrant outstanding, including both vested and non-vested options.

No definition available.

Name:	dtgi_ShareBasedCompensationArrangementByShareBasedPaymentAwardWarrantOutstandingNumber
Namespace Prefix:	dtgi_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Weighted average remaining contractual term for Warrants awards exercisable, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	dtgi_ShareBasedCompensationArrangementByShareBasedPaymentAwardWarrantsOutstandingWeightedAverageRemainingContractualTermExercisable
Namespace Prefix:	dtgi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

No definition available.

Name:	dtgi_ShareBasedCompensationArrangementByShareBasedPaymentAwardWarrantsOutstandingWeightedAverageRemainingContractualTermExercised
Namespace Prefix:	dtgi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Weighted average remaining contractual term for warrants awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	dtgi_ShareBasedCompensationArrangementByShareBasedPaymentAwardWarrantsOutstandingWeightedAverageRemainingContractualTermGrants
Namespace Prefix:	dtgi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of warrants outstanding and currently exercisable under the warrant plan.

No definition available.

Name:	dtgi_ShareBasedCompensationArrangementByShareBasedPaymentAwardWarrantsWeightedAverageExercisePrice
Namespace Prefix:	dtgi_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

No definition available.

Name:	dtgi_ShareBasedCompensationArrangementByShareBasedPaymentAwardWarrantsWeightedAverageExercisePriceCancelled
Namespace Prefix:	dtgi_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

The number of shares under warrants that were exercisable during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the warrants plan.

No definition available.

Name:	dtgi_ShareBasedCompensationArrangementByShareBasedPaymentAwardWarrantsWeightedAverageExercisePriceExercisable
Namespace Prefix:	dtgi_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

Weighted average price at which warrants holders acquired shares when converting their warrants into shares.

No definition available.

Name:	dtgi_ShareBasedCompensationArrangementByShareBasedPaymentAwardWarrantsWeightedAverageExercisePriceExercised
Namespace Prefix:	dtgi_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

The weighted average grant-date fair value of warrants granted during the reporting period as calculated by applying the disclosed warrants pricing methodology.

No definition available.

Name:	dtgi_ShareBasedCompensationArrangementByShareBasedPaymentAwardWarrantsWeightedAverageExercisePriceGranted
Namespace Prefix:	dtgi_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

Number of share warrants (or share units) exercised during the current period.

No definition available.

Name:	dtgi_StockIssuedDuringPeriodSharesStockWarrantExercised
Namespace Prefix:	dtgi_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

No definition available.

Name:	dtgi_WeightedaverageRemainingContractualTermYearOutstanding
Namespace Prefix:	dtgi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

No definition available.

Name:	dtgi_WeightedaverageRemainingContractualTermYearsForfeitedAndCancelled
Namespace Prefix:	dtgi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

No definition available.

Name:	dtgi_WeightedaverageRemainingContractualTermYearsOutstanding
Namespace Prefix:	dtgi_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

No definition available.