Goodwill, Impairment Test Benchmark, Equity in Acquiree Company, Percent

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- Definition

Goodwill, Impairment Test Benchmark, Number of Identified Industries

+ References

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- Definition

Market Capitalization

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- Definition

Percentage above fair value that an investor seeking to acquire control of an entity will pay, used as an input to measure fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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- Definition

Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (f)

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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- Definition

Percentage of fair value of reporting unit in excess of carrying amount.

+ References

No definition available.

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- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 4.E)

-URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707

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-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 4

-Section E

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-Publisher FASB

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-Topic 210

-SubTopic 10

-Section S99

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-Subparagraph (SX 210.5-02.29-31)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30, 31

-Article 5

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Goodwill and Other Identifiable Intangible Assets, Net Goodwill (Details) (USD $)	0 Months Ended	3 Months Ended
	Jun. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Sep. 30, 2014	Jun. 30, 2014 industry
Goodwill [Roll Forward]
Beginning balance		$ 103,398,000us-gaap_Goodwill	$ 103,569,000us-gaap_Goodwill
Foreign currency translation adjustment		(724,000)us-gaap_GoodwillTranslationAdjustments	349,000us-gaap_GoodwillTranslationAdjustments
Ending balance		102,674,000us-gaap_Goodwill	103,918,000us-gaap_Goodwill
Goodwill [Line Items]
Market capitalization	235,800,000dgii_MarketCapitalization				235,800,000dgii_MarketCapitalization
Carrying value	$ 273,000,000us-gaap_StockholdersEquity	$ 261,384,000us-gaap_StockholdersEquity		$ 265,298,000us-gaap_StockholdersEquity	$ 273,000,000us-gaap_StockholdersEquity
Control premium percent	35.00%us-gaap_FairValueInputsControlPremium
Percent fair value in excess of carrying value of goodwill	17.00%				17.00%
Target companies equity benchmark	50.00%				50.00%
Number of industries encompasses similar products	3				3
Minimum [Member]
Goodwill [Line Items]
Control premium percent	30.00%
Maximum
Goodwill [Line Items]
Control premium percent	40.00%