Segment Reporting (Schedule Of Net Sales By Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Segment Reporting Information [Line Items]
Total net sales	$ 200,234	$ 226,323	$ 251,014	$ 223,552	$ 159,596	$ 166,689	$ 186,048	$ 168,833	$ 901,123	[1]	$ 681,166	[1]	$ 572,755	[1]
Travel Trailer And Fifth-Wheels [Member]
Segment Reporting Information [Line Items]
Total net sales									658,961		499,852		427,830
Motorhomes [Member]
Segment Reporting Information [Line Items]
Total net sales									30,196		15,828		16,864
RV Aftermarket [Member]
Segment Reporting Information [Line Items]
Total net sales									19,119		14,660		13,914
RV Adjacent Industries [Member]
Segment Reporting Information [Line Items]
Total net sales									72,649		40,303		18,594
RV Segment [Member]
Segment Reporting Information [Line Items]
Total net sales									780,925	[1]	570,643	[1]	477,202	[1]
Manufactured Housing Original Equipment Manufacturers [Member]
Segment Reporting Information [Line Items]
Total net sales									80,392		77,087		68,483
Manufactured Housing Aftermarket [Member]
Segment Reporting Information [Line Items]
Total net sales									16,060		16,184		16,895
Manufactured Housing Adjacent Industries [Member]
Segment Reporting Information [Line Items]
Total net sales									23,746		17,252		10,175
MH Segment [Member]
Segment Reporting Information [Line Items]
Total net sales									$ 120,198	[1]	$ 110,523	[1]	$ 95,553	[1]

[1] Thor Industries, Inc., a customer of the RV Segment, accounted for 34 percent, 36 percent and 41 percent of the Company's consolidated net sales for the years ended December 31, 2012, 2011 and 2010, respectively. Berkshire Hathaway Inc. (through its subsidiaries Forest River, Inc. and Clayton Homes, Inc.), a customer of both segments, accounted for 27 percent, 27 percent and 26 percent of the Company's consolidated net sales for the years ended December 31, 2012, 2011 and 2010, respectively. No other customer accounted for more than 10 percent of consolidated net sales in the years ended December 31, 2012, 2011 and 2010.