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LONG-LIVED ASSETS (Narrative) (Details) (USD $)
3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Sep. 30, 2013
Finite-Lived Intangible Assets [Line Items]      
Intangible assets $ 9,270,000us-gaap_FiniteLivedIntangibleAssetsGross $ 9,270,000us-gaap_FiniteLivedIntangibleAssetsGross  
Customer Lists [Member]      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets 8,990,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerListsMember
8,990,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerListsMember
 
Estimated lives 14 years 14 years  
Panopticon [Member] | Intellectual Property [Member]      
Finite-Lived Intangible Assets [Line Items]      
Purchase price for intellectual property assets     7,900,000us-gaap_FinitelivedIntangibleAssetsAcquired1
/ us-gaap_BusinessAcquisitionAxis
= dwch_PanopticonMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_IntellectualPropertyMember
Intangible assets 3,562,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_BusinessAcquisitionAxis
= dwch_PanopticonMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_IntellectualPropertyMember
7,900,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_BusinessAcquisitionAxis
= dwch_PanopticonMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_IntellectualPropertyMember
 
Estimated lives 7 years 6 months    
Impairment charge 4,338,000us-gaap_ImpairmentOfIntangibleAssetsFinitelived
/ us-gaap_BusinessAcquisitionAxis
= dwch_PanopticonMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_IntellectualPropertyMember
   
Panopticon [Member] | Customer Lists [Member]      
Finite-Lived Intangible Assets [Line Items]      
Intangible assets 3,017,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_BusinessAcquisitionAxis
= dwch_PanopticonMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerListsMember
8,990,000us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_BusinessAcquisitionAxis
= dwch_PanopticonMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerListsMember
 
Impairment charge $ 5,973,000us-gaap_ImpairmentOfIntangibleAssetsFinitelived
/ us-gaap_BusinessAcquisitionAxis
= dwch_PanopticonMember
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_CustomerListsMember