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

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

No definition available.

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