Additional Balance Sheet And Cash Flow Information (Inventories, Net) (Details) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Additional Balance Sheet And Cash Flow Information [Abstract]
Raw materials and work in process	$ 113,932,000	$ 100,082,000
Motorcycle finished goods	226,261,000	158,425,000
Parts and accessories and general merchandise	121,340,000	101,975,000
Inventory at lower of FIFO cost or market	461,533,000	360,482,000
Excess of FIFO over LIFO cost	(43,527,000)	(34,036,000)
Inventories, net	418,006,000	326,446,000
Obsolescence reserves deducted from FIFO cost	$ 24,800,000	$ 34,200,000