Victory Motorcycles Wind Down (Liability Balance) (Details) - Victory Motorcycles - Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations, Abandonment $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($)
Disposal Group, Including Discontinued Operation, Liabilities [Roll Forward]
Liability balance as of January 1, 2017	$ 0
Expenses	27,022
Cash payments	(2,961)
Liability balance as of March 31, 2017	24,061
Contract termination charges
Disposal Group, Including Discontinued Operation, Liabilities [Roll Forward]
Liability balance as of January 1, 2017	0
Expenses	14,307
Cash payments	(187)
Liability balance as of March 31, 2017	14,120
Inventory charges
Disposal Group, Including Discontinued Operation, Liabilities [Roll Forward]
Liability balance as of January 1, 2017	0
Expenses	7,451
Cash payments	0
Liability balance as of March 31, 2017	7,451
Other costs
Disposal Group, Including Discontinued Operation, Liabilities [Roll Forward]
Liability balance as of January 1, 2017	0
Expenses	5,264
Cash payments	(2,774)
Liability balance as of March 31, 2017	$ 2,490