Segment Reporting (Schedule Of Information Relating To Segments) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information
Net sales	$ 362,085	$ 321,783	$ 723,542	$ 607,160
Operating profit	33,634	29,149	65,472	55,195
RV Segment
Segment Reporting Information
Net sales	331,606	289,826	666,177	548,862
Operating profit	30,108	28,032	59,241	51,761
Travel Trailer And Fifth-Wheels
Segment Reporting Information
Net sales	245,707	235,286	506,064	447,416
Motorhomes
Segment Reporting Information
Net sales	18,899	15,673	40,546	30,057
RV Aftermarket
Segment Reporting Information
Net sales	21,484	9,668	38,693	16,762
Adjacent Industries
Segment Reporting Information
Net sales	45,516	29,199	80,874	54,627
MH Segment
Segment Reporting Information
Net sales	30,479	31,957	57,365	58,298
Operating profit	3,526	3,071	6,231	5,388
Manufactured Housing OEMs
Segment Reporting Information
Net sales	20,535	20,764	38,358	37,281
Manufactured Housing Aftermarket
Segment Reporting Information
Net sales	4,301	3,705	8,130	7,172
Adjacent Industries
Segment Reporting Information
Net sales	5,643	7,488	10,877	13,845
Segment Operating Profit [Member]
Segment Reporting Information
Operating profit	33,634	31,103	65,472	57,149
Sale of Aluminum Extrusion Assets [Member]
Segment Reporting Information
Operating profit	$ 0	$ (1,954)	$ 0	$ (1,954)