Segment Reporting (Schedule Of Information Relating To Segments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting Information
Total net sales	$ 294,271	$ 250,851	$ 901,431	$ 790,629
Total operating profit	23,071	22,830	78,266	62,126
RV Segment
Segment Reporting Information
Total net sales	263,604	217,963	812,466	695,032
Total operating profit	20,287	19,234	72,048	54,098
Travel Trailer And Fifth-Wheels
Segment Reporting Information
Total net sales	198,239	174,637	645,655	567,087
Motorhomes
Segment Reporting Information
Total net sales	19,622	12,388	49,679	35,278
RV Aftermarket
Segment Reporting Information
Total net sales	16,015	6,904	32,777	19,785
Adjacent Industries
Segment Reporting Information
Total net sales	29,728	24,034	84,355	72,882
MH Segment
Segment Reporting Information
Total net sales	30,667	32,888	88,965	95,597
Total operating profit	2,784	3,596	8,172	9,904
Manufactured Housing OEMs
Segment Reporting Information
Total net sales	21,269	22,571	58,550	62,941
Manufactured Housing Aftermarket
Segment Reporting Information
Total net sales	3,677	3,138	10,849	10,377
Adjacent Industries
Segment Reporting Information
Total net sales	5,721	7,179	19,566	22,279
Total Segment Operating Profit
Segment Reporting Information
Total operating profit	23,071	22,830	80,220	64,002
Sale Of Extrusion Assets
Segment Reporting Information
Total operating profit	0	0	(1,954)	0
Executive Succession
Segment Reporting Information
Total operating profit	$ 0	$ 0	$ 0	$ (1,876)