XML 86 R69.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Marketable Securities (Fair Value to Amortized Cost) (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Sep. 30, 2017
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Available-for-sale securities, amortized cost basis | $ 4,756 | [1] | $ 36,788 | [2]
Available-for-sale securities, unrealized gains | 0 |  | 4 |
Available-for-sale securities, unrealized losses | (20) |  | (24) |
Available-for-sale marketable securities, fair value | 4,736 | [1] | 36,768 | [2]
Purchased and accrued interest | 6 |  | 211 |
Current Assets |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Available-for-sale securities, amortized cost basis |  |  | 32,031 |
Available-for-sale securities, unrealized gains |  |  | 4 |
Available-for-sale securities, unrealized losses |  |  | (20) |
Available-for-sale marketable securities, fair value |  |  | 32,015 |
Current Assets | Corporate bonds |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Available-for-sale securities, amortized cost basis |  |  | 28,275 |
Available-for-sale securities, unrealized gains |  |  | 0 |
Available-for-sale securities, unrealized losses |  |  | (20) |
Available-for-sale marketable securities, fair value |  |  | 28,255 |
Current Assets | Certificates of deposit |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Available-for-sale securities, amortized cost basis | 4,756 |  | 3,756 |
Available-for-sale securities, unrealized gains | 0 |  | 4 |
Available-for-sale securities, unrealized losses | (20) |  | 0 |
Available-for-sale marketable securities, fair value | $ 4,736 |  | 3,760 |
Non-current Assets | Certificates of deposit |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Available-for-sale securities, amortized cost basis |  |  | 4,757 |
Available-for-sale securities, unrealized gains |  |  | 0 |
Available-for-sale securities, unrealized losses |  |  | (4) |
Available-for-sale marketable securities, fair value |  |  | $ 4,753 |
[1] | Included in amortized cost and fair value is purchased and accrued interest of $6.
[2] | Included in amortized cost and fair value is purchased and accrued interest of $211

X
- Definition Available-for-sale Securities, Purchased and accrued interest + References No definition available. + Details
Name: | dgii_AvailableForSaleSecuritiesPurchasedAndAccruedInterest
Namespace Prefix: | dgii_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109979856&loc=d3e26610-111562 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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_FinancialInstrumentAxis=us-gaap_DomesticCorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember
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: |