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Segment Reporting (Schedule Of Information Relating To Segments) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Segment Reporting Information    
Net sales $ 361,457us-gaap_SalesRevenueGoodsNet $ 285,377us-gaap_SalesRevenueGoodsNet
Operating profit 31,838us-gaap_OperatingIncomeLoss 26,046us-gaap_OperatingIncomeLoss
RV Segment    
Segment Reporting Information    
Net sales 334,571us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= dw_RVSegmentMember		 259,036us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= dw_RVSegmentMember
Operating profit 29,133us-gaap_OperatingIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= dw_RVSegmentMember		 23,729us-gaap_OperatingIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= dw_RVSegmentMember
Travel Trailer And Fifth-Wheels    
Segment Reporting Information    
Net sales 260,357us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= dw_TravelTrailerAndFifthWheelsMember		 212,130us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= dw_TravelTrailerAndFifthWheelsMember
Motorhomes    
Segment Reporting Information    
Net sales 21,647us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= dw_MotorhomesMember		 14,384us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= dw_MotorhomesMember
RV Aftermarket    
Segment Reporting Information    
Net sales 17,209us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= dw_RvAftermarketMember		 7,094us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= dw_RvAftermarketMember
Adjacent Industries    
Segment Reporting Information    
Net sales 35,358us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= dw_RvAdjacentIndustriesMember		 25,428us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= dw_RvAdjacentIndustriesMember
MH Segment    
Segment Reporting Information    
Net sales 26,886us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= dw_MHSegmentMember		 26,341us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= dw_MHSegmentMember
Operating profit 2,705us-gaap_OperatingIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= dw_MHSegmentMember		 2,317us-gaap_OperatingIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= dw_MHSegmentMember
Manufactured Housing OEMs    
Segment Reporting Information    
Net sales 17,823us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= dw_ManufacturedHousingOemsMember		 16,517us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= dw_ManufacturedHousingOemsMember
Manufactured Housing Aftermarket    
Segment Reporting Information    
Net sales 3,829us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= dw_ManufacturedHousingAftermarketMember		 3,467us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= dw_ManufacturedHousingAftermarketMember
Adjacent Industries    
Segment Reporting Information    
Net sales $ 5,234us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= dw_ManufacturedHousingAdjacentIndustriesMember		 $ 6,357us-gaap_SalesRevenueGoodsNet
/ us-gaap_StatementBusinessSegmentsAxis
= dw_ManufacturedHousingAdjacentIndustriesMember