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Common Stock Repurchase (Details) $ in Millions | Oct. 28, 2014 USD ($)
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October 2014 Repurchase Program [Member] |
Stock repurchase program, authorized amount | $ 15.0

X
- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
Name: | us-gaap_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_ShareRepurchaseProgramAxis=dgii_October2014RepurchaseProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |