XML 52 R41.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Marketable Securities (Details) $ in Thousands | 3 Months Ended
--- | ---
Dec. 31, 2016 USD ($) Security | Dec. 31, 2015 USD ($)
Schedule of Available-for-sale Securities [Line Items] |  |
Number of securities below amortized cost basis | 18 |
Number of securities | 47 |
Proceeds from maturities of marketable securities | $ | $ 32,155 | $ 7,106
Current Assets |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale securities, next twelve months, maximum year mature | 1 year |
Non-current Assets |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Available-for-sale securities, year two through five, maximum year mature | 2 years |

X
- Definition Available-For-Sale Securities, Next Twelve Months, Maximum Year Mature + References No definition available. + Details
Name: | dgii_AvailableForSaleSecuritiesNextTwelveMonthsMaximumYearMature
Namespace Prefix: | dgii_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Available-for-sale Securities, Total Number of Securities + References No definition available. + Details
Name: | dgii_AvailableForSaleSecuritiesTotalNumberOfSecurities
Namespace Prefix: | dgii_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Available-for sale Securities, Debt Maturities, Year Two Through Five, this is the maximum year (up to Five). + References No definition available. + Details
Name: | dgii_AvailableforsaleSecuritiesDebtMaturitiesYearTwoThroughFiveMaximumYearMature
Namespace Prefix: | dgii_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of investment positions in available-for-sale investments in a continuous unrealized loss position for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27290-111563 + Details
Name: | us-gaap_AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash inflow associated with the sale or maturity (principal being due) of securities not classified as either held-to-maturity securities or trading securities which are classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26853-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 + Details
Name: | us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=dgii_CurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=dgii_NonCurrentAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |