XML 30 R32.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Marketable Securities (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended |
--- | --- | ---
Dec. 31, 2014 Security | Dec. 31, 2013 | Sep. 30, 2014
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Number of securities below amortized cost basis | 33 us-gaap_AvailableforsaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositions1 |  |  |  |
Number of securities | 72 dgii_AvailableForSaleSecuritiesTotalNumberOfSecurities |  |  |  |
Proceeds from maturities of marketable securities | $ 9,321 us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities |  | $ 7,109 us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities |  |
Available-for-sale securities, amortized cost basis | 47,285 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis | [1] |  | 44,471 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis | [2]
Available-for-sale securities, unrealized gains | 18 us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax |  |  | 17 us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax |
Available-for-sale securities, unrealized losses | (79)us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax |  |  | (49)us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax |
Available-for-sale marketable securities, fair value | 47,224 us-gaap_AvailableForSaleSecuritiesDebtSecurities | [1] |  | 44,439 us-gaap_AvailableForSaleSecuritiesDebtSecurities | [2]
Purchased and accrued interest | 163 dgii_AvailableForSaleSecuritiesPurchasedAndAccruedInterest |  |  | 213 dgii_AvailableForSaleSecuritiesPurchasedAndAccruedInterest |
Fair value of available-for-sale securities in continuous unrealized loss position for less than twelve months | 33,296 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue |  |  | 30,453 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (78)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss |  |  | (47)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss |
Fair value of available-for-sale securities in continuous unrealized loss position for twelve months or longer | 499 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue |  |  | 748 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (1)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss |  |  | (2)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss |
Current Assets |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Available-for-sale securities, next twelve months, maximum year mature | 1 year |  |  |  |
Available-for-sale securities, amortized cost basis | 32,657 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember | [1] |  | 32,918 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember | [2]
Available-for-sale securities, unrealized gains | 2 us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember |  |  | 3 us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember |
Available-for-sale securities, unrealized losses | (35)us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember |  |  | (23)us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember |
Available-for-sale marketable securities, fair value | 32,624 us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember | [1] |  | 32,898 us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember | [2]
Non-current Assets |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Available-for-sale securities, year two through five, maximum year mature | 3 years |  |  |  |
Available-for-sale securities, amortized cost basis | 14,628 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember | [1] |  | 11,553 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember | [2]
Available-for-sale securities, unrealized gains | 16 us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember |  |  | 14 us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember |
Available-for-sale securities, unrealized losses | (44)us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember |  |  | (26)us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember |
Available-for-sale marketable securities, fair value | 14,600 us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember | [1] |  | 11,541 us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember | [2]
Corporate Bonds |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Fair value of available-for-sale securities in continuous unrealized loss position for less than twelve months | 28,324 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember |  |  | 23,475 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (52)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember |  |  | (26)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember |
Fair value of available-for-sale securities in continuous unrealized loss position for twelve months or longer | 0 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember |  |  | 0 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember |  |  | 0 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember |
Corporate Bonds | Current Assets |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Available-for-sale securities, amortized cost basis | 23,409 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember | [1] |  | 24,668 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember | [2]
Available-for-sale securities, unrealized gains | 0 us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember |  |  | 1 us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember |
Available-for-sale securities, unrealized losses | (34)us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember |  |  | (22)us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember |
Available-for-sale marketable securities, fair value | 23,375 us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember | [1] |  | 24,647 us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember | [2]
Corporate Bonds | Non-current Assets |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Available-for-sale securities, amortized cost basis | 5,122 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember | [1] |  | 2,051 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember | [2]
Available-for-sale securities, unrealized gains | 0 us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember |  |  | 0 us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember |
Available-for-sale securities, unrealized losses | (18)us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember |  |  | (4)us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember |
Available-for-sale marketable securities, fair value | 5,104 us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember | [1] |  | 2,047 us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_DomesticCorporateDebtSecuritiesMember | [2]
Commercial Paper |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Fair value of available-for-sale securities in continuous unrealized loss position for less than twelve months | 1,997 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember |  |  | 3,998 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (1)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember |  |  | (1)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember |
Fair value of available-for-sale securities in continuous unrealized loss position for twelve months or longer | 0 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember |  |  | 0 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember |  |  | 0 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember |
Commercial Paper | Current Assets |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Available-for-sale securities, amortized cost basis | 5,997 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember | [1] |  | 3,998 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember | [2]
Available-for-sale securities, unrealized gains | 0 us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember |  |  | 0 us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember |
Available-for-sale securities, unrealized losses | (1)us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember |  |  | (1)us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember |
Available-for-sale marketable securities, fair value | 5,996 us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember | [1] |  | 3,997 us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember | [2]
Certificates of Deposit |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Fair value of available-for-sale securities in continuous unrealized loss position for less than twelve months | 2,975 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember |  |  | 2,980 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (25)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember |  |  | (20)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember |
Fair value of available-for-sale securities in continuous unrealized loss position for twelve months or longer | 499 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember |  |  | 748 us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember |
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (1)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember |  |  | (2)us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember |
Certificates of Deposit | Current Assets |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Available-for-sale securities, amortized cost basis | 3,251 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember | [1] |  | 4,252 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember | [2]
Available-for-sale securities, unrealized gains | 2 us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember |  |  | 2 us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember |
Available-for-sale securities, unrealized losses | 0 us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember |  |  | 0 us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember |
Available-for-sale marketable securities, fair value | 3,253 us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember | [1] |  | 4,254 us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_BalanceSheetLocationAxis = dgii_CurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember | [2]
Certificates of Deposit | Non-current Assets |  |  |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |  |  |
Available-for-sale securities, amortized cost basis | 9,506 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember | [1] |  | 9,502 us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember | [2]
Available-for-sale securities, unrealized gains | 16 us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember |  |  | 14 us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember |
Available-for-sale securities, unrealized losses | (26)us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember |  |  | (22)us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember |
Available-for-sale marketable securities, fair value | $ 9,496 us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember | [1] |  | $ 9,494 us-gaap_AvailableForSaleSecuritiesDebtSecurities / us-gaap_BalanceSheetLocationAxis = dgii_NonCurrentAssetsMember / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = dgii_CertificatesOfDepositNotIncludedWithCashAndCashEquivalentsMember | [2]
[1] | Included in amortized cost and fair value is purchased and accrued interest of $163
[2] | Included in amortized cost and fair value is purchased and accrued interest of $213.

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- Definition Available-for sale Securities, Debt Maturities, Year Two Through Five, this is the maximum year (up to Five). + References No definition available. + Details
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- Definition Available-For-Sale Securities, Next Twelve Months, Maximum Year Mature + References No definition available. + Details
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Namespace Prefix: | dgii_
Data Type: | xbrli:durationItemType
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