LONG-LIVED ASSETS (Other Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Dec. 31, 2014	Sep. 30, 2014
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 9,270	$ 9,270
Impairment charge	(5,973)dwch_IntangibleAssetImpairmentCharge
Accumulated amortization	(2,355)	(2,180)
Net carrying amount balance	942us-gaap_FiniteLivedIntangibleAssetsNet	7,090us-gaap_FiniteLivedIntangibleAssetsNet
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average useful life	20 years	20 years
Gross carrying amount	160	160
Accumulated amortization	(83)	(81)
Net carrying amount balance	77	79
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average useful life	14 years	14 years
Gross carrying amount	8,990	8,990
Impairment charge	(5,973)
Accumulated amortization	(2,208)	(2,047)
Net carrying amount balance	809	6,943
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Weighted average useful life	3 years	3 years
Gross carrying amount	120	120
Accumulated amortization	(64)	(52)
Net carrying amount balance	$ 56	$ 68

Intangible Asset Impairment Charge

No definition available.

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275

+ Details

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

+ Details

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