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Acquisitions, Goodwill And Other Intangible Assets (Summary of Other Intangible Assets by Segment) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Acquired Finite-Lived Intangible Assets [Line Items]    
Other intangible assets $ 96,959us-gaap_IntangibleAssetsNetExcludingGoodwill $ 59,392us-gaap_IntangibleAssetsNetExcludingGoodwill
RV Segment    
Acquired Finite-Lived Intangible Assets [Line Items]    
Other intangible assets 95,075us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= dw_RVSegmentMember
56,954us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= dw_RVSegmentMember
MH Segment    
Acquired Finite-Lived Intangible Assets [Line Items]    
Other intangible assets $ 1,884us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= dw_MHSegmentMember
$ 2,438us-gaap_IntangibleAssetsNetExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= dw_MHSegmentMember