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Contingencies (Details) (Patent Infringement [Member], USD $)	0 Months Ended
	Oct. 23, 2012	Apr. 22, 2013 Subsequent Event [Member]
Loss Contingencies [Line Items]
Litigation Settlement, Amount	$ 500,000	$ 1,500,000
Litigation settlement amount, net of taxes		$ 1,000,000
Litigation settlement amount, impact on diluted earnings per share		$ 0.04

X

- Definition

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

+ References

No definition available.

+ Details

Name:	dgii_LitigationSettlementAmount
Namespace Prefix:	dgii_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Litigation settlement amount, impact on diluted earnings per share

+ References

No definition available.

+ Details

Name:	dgii_LitigationSettlementAmountImpactOnDilutedEarningsPerShare
Namespace Prefix:	dgii_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Litigation settlement amount, net of taxes

+ References

No definition available.

+ Details

Name:	dgii_LitigationSettlementAmountNetOfTaxes
Namespace Prefix:	dgii_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

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