Name:	dwch_AmortizationOfIntangibleAssets1
Namespace Prefix:	dwch_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Capitalized Closing Costs And Adjustments.

No definition available.

Name:	dwch_CapitalizedClosingCostsAndAdjustments
Namespace Prefix:	dwch_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Deferred Revenue Recognition Period.

No definition available.

Name:	dwch_DeferredRevenueRecognitionPeriod
Namespace Prefix:	dwch_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Initial Service Period.

No definition available.

Name:	dwch_InitialServicePeriod
Namespace Prefix:	dwch_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

License Sales To Distributors And Resellers As Percentage Of Total Revenue.

No definition available.

Name:	dwch_LicenseSalesToDistributorsAndResellersAsPercentageOfTotalRevenue
Namespace Prefix:	dwch_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Money Back Guarantee Period.

No definition available.

Name:	dwch_MoneyBackGuaranteePeriod
Namespace Prefix:	dwch_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Number Of Major Customers.

No definition available.

Name:	dwch_NumberOfMajorCustomers
Namespace Prefix:	dwch_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

Product Warranty Period.

No definition available.

Name:	dwch_ProductWarrantyPeriod
Namespace Prefix:	dwch_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Regular Invoicing Period

No definition available.

Name:	dwch_RegularInvoicingPeriod
Namespace Prefix:	dwch_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Subscription Cancellation Notice Period.

No definition available.

Name:	dwch_SubscriptionCancellationNoticePeriod
Namespace Prefix:	dwch_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Total increases or decreases in capitalized computer software costs for period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 985

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756

Name:	us-gaap_CapitalizedComputerSoftwarePeriodIncreaseDecrease
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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Unamortized costs incurred for development of computer software, which is to be sold, leased or otherwise marketed, after establishing technological feasibility through to the general release of the software products. Excludes capitalized costs of developing software for internal use.

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 17

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 985

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756

Name:	us-gaap_CapitalizedSoftwareDevelopmentCostsForSoftwareSoldToCustomers
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination.

No definition available.

Name:	us-gaap_FinitelivedIntangibleAssetsAcquired1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.