Additional Balance Sheet and Cash Flow Information (Inventories, Net) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Inventory [Line Items]
Raw materials and work in process	$ 140,639	$ 161,704
Inventory at lower of FIFO cost or market	548,184	635,175
Excess of FIFO over LIFO cost	(48,267)	(49,268)
Inventories, net	499,917	585,907
Obsolescence reserves deducted from FIFO cost	39,900	26,700
Motorcycles
Inventory [Line Items]
Inventory, finished goods, net of inventory valuation adjustment	285,281	327,952
Parts And Accessories And General Merchandise
Inventory [Line Items]
Inventory, finished goods, net of inventory valuation adjustment	$ 122,264	$ 145,519