Segment Reporting (Schedule Of Information Relating To Segments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Segment Reporting Information [Line Items]
Net sales	$ 226,323	$ 166,689	$ 700,889	$ 521,570
Operating profit	14,948	9,203	51,289	42,656
Accretion related to contingent consideration	(430)	(445)	(1,350)	(1,394)
Travel Trailer And Fifth-Wheels [Member]
Segment Reporting Information [Line Items]
Net sales	162,719	117,946	514,653	387,746
Motorhomes [Member]
Segment Reporting Information [Line Items]
Net sales	8,376	3,304	22,568	12,244
RV Aftermarket [Member]
Segment Reporting Information [Line Items]
Net sales	5,355	4,108	14,714	12,169
RV Adjacent Industries [Member]
Segment Reporting Information [Line Items]
Net sales	18,507	10,870	57,008	27,497
RV Segment [Member]
Segment Reporting Information [Line Items]
Net sales	194,957	136,228	608,943	439,656
Operating profit	12,945	7,745	47,209	40,370
Manufactured Housing OEMs [Member]
Segment Reporting Information [Line Items]
Net sales	21,188	21,487	61,678	56,112
Manufactured Housing Aftermarket [Member]
Segment Reporting Information [Line Items]
Net sales	3,990	4,254	12,730	12,693
Manufactured Housing Adjacent Industries [Member]
Segment Reporting Information [Line Items]
Net sales	6,188	4,720	17,538	13,109
MH Segment [Member]
Segment Reporting Information [Line Items]
Net sales	31,366	30,461	91,946	81,914
Operating profit	3,781	3,786	10,942	8,963
Total Segment Operating Profit [Member]
Segment Reporting Information [Line Items]
Operating profit	16,726	11,531	58,151	49,333
Corporate [Member]
Segment Reporting Information [Line Items]
Operating profit	(1,989)	(1,803)	(6,513)	(5,846)
Other Non-Segment Items [Member]
Segment Reporting Information [Line Items]
Operating profit	$ 641	$ (80)	$ 1,001	$ 563