Represents the consolidated leverage ratio as defined in the credit agreement.

No definition available.

Name:	dgit_DebtInstrumentCovenantConsolidatedLeverageRatio
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Data Type:	xbrli:pureItemType
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Period Type:	duration

- Definition

Represents the consolidated fixed charge coverage ratio as defined in the credit agreement.

+ References

No definition available.

+ Details

Name:	dgit_DebtInstrumentCovenantFixedChargeCoverageRatio
Namespace Prefix:	dgit_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the percentage of mandatory prepayments of excess cash flow (as defined by the terms of agreement) which is dependent on the consolidated leverage ratio.

+ References

No definition available.

+ Details

Name:	dgit_DebtInstrumentCovenantMandatoryPrepaymentAsPercentageOfExcessCashFlow
Namespace Prefix:	dgit_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the maximum annual capital expenditures allowed under the terms of the credit agreement.

+ References

No definition available.

+ Details

Name:	dgit_DebtInstrumentCovenantMaximumAnnualCapitalExpenditure
Namespace Prefix:	dgit_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the LIBOR floor rate.

+ References

No definition available.

+ Details

Name:	dgit_DebtInstrumentRateOfVariableRateBasis
Namespace Prefix:	dgit_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Decrease for amounts repaid on the debt instrument for the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(f))

-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph f

-Article 4

+ Details

Name:	us-gaap_DebtInstrumentDecreaseRepayments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of the fee that accompanies borrowing money under the debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Increase in basis points of the stated interest rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentInterestRateIncrease
Namespace Prefix:	us-gaap_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments applied to principal.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

+ Details

Name:	us-gaap_DebtInstrumentPeriodicPaymentPrincipal
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 129

-Paragraph 2, 4

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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Subsequent Event-Amendment to Credit Facility (Details) (USD $)	12 Months Ended					0 Months Ended			0 Months Ended		0 Months Ended		0 Months Ended
	Dec. 31, 2012 July 2011 Credit Facility Credit Facility	Dec. 31, 2012 July 2011 Credit Facility Term Loans	Jul. 31, 2011 July 2011 Credit Facility Term Loans	Dec. 31, 2012 July 2011 Credit Facility Revolving Loans	Jul. 31, 2011 July 2011 Credit Facility Revolving Loans	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Credit Facility	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Credit Facility March 8, 2013 to June 29, 2014 Maximum	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Credit Facility March 8, 2013 to June 29, 2014 Minimum	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Credit Facility June 30, 2014 to June 29, 2015 Maximum	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Credit Facility June 30, 2014 to June 29, 2015 Minimum	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Credit Facility June 30, 2015 and thereafter Maximum	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Credit Facility June 30, 2015 and thereafter Minimum	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Term Loans	Mar. 15, 2013 Subsequent event March 2013 Amended Credit Facility Term Loans	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Term Loans Greater than 3.00	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Term Loans Greater than 3.00 Minimum	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Term Loans 2.25 to 3.00	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Term Loans 2.25 to 3.00 Maximum	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Term Loans 2.25 to 3.00 Minimum	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Term Loans 1.25 to 2.25	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Term Loans 1.25 to 2.25 Maximum	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Term Loans 1.25 to 2.25 Minimum	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Term Loans Less than 1.25	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Term Loans Less than 1.25 Maximum	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Term Loans March 31, 2013	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Term Loans June 30, 2013	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Term Loans September 30, 2013	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Term Loans December 31, 2013	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Term Loans Each quarter thereafter	Mar. 08, 2013 Subsequent event March 2013 Amended Credit Facility Revolving Loans
Subsequent event-Amendment to Credit Facility
Consolidated leverage ratio	3.38						4.00		3.50		3.25					3.00		3.00	2.25		2.25	1.25		1.25
Consolidated fixed charge coverage ratio	330.00%							105.00%		110.00%		110.00%
Maximum borrowing capacity			$ 490,000,000	$ 120,000,000	$ 120,000,000																									$ 50,000,000
Increase of interest rate percentage on borrowings																														0.010
Margin (as a percent)		4.50%											6.00%
LIBOR floor rate (as a percent)													1.25%
Minimum quarterly principal payment																									1,225,000	8,575,000	8,575,000	8,575,000	6,125,000
Percentage of mandatory prepayments of excess cash flow depending on consolidated leverage ratio															75.00%		50.00%			25.00%			0.00%
Annual capital expenditures limit						30,000,000
Principal payment						50,000,000								25,000,000
Consent and arrangement fees						$ 2,600,000