Segment Reporting (Schedule Of Information Relating To Segments) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information
Net sales	$ 345,296	$ 294,271	$ 1,068,838	$ 901,431
Operating profit	27,171	23,071	92,643	78,266
RV Segment
Segment Reporting Information
Net sales	313,130	263,604	979,307	812,466
Operating profit	23,720	20,287	82,961	72,048
Travel Trailer And Fifth-Wheels
Segment Reporting Information
Net sales	216,093	196,213	722,157	643,629
Motorhomes
Segment Reporting Information
Net sales	23,539	21,607	64,085	51,664
RV Aftermarket
Segment Reporting Information
Net sales	26,203	16,015	64,896	32,777
Adjacent Industries
Segment Reporting Information
Net sales	47,295	29,769	128,169	84,396
MH Segment
Segment Reporting Information
Net sales	32,166	30,667	89,531	88,965
Operating profit	3,451	2,784	9,682	8,172
Manufactured Housing OEMs
Segment Reporting Information
Net sales	22,786	21,269	61,144	58,550
Manufactured Housing Aftermarket
Segment Reporting Information
Net sales	3,880	3,677	12,010	10,849
Adjacent Industries
Segment Reporting Information
Net sales	5,500	5,721	16,377	19,566
Segment Operating Profit [Member]
Segment Reporting Information
Operating profit	27,171	23,071	92,643	80,220
Sale of Aluminum Extrusion Assets [Member]
Segment Reporting Information
Operating profit	$ 0	$ 0	$ 0	$ (1,954)