Goodwill and Other Intangible Assets (Segment Information) (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Mar. 31, 2016
Goodwill    
Goodwill $ 127,934 $ 127,934
UGG brand    
Goodwill    
Goodwill 6,101 6,101
Sanuk brand    
Goodwill    
Goodwill 113,944 113,944
Other brands    
Goodwill    
Goodwill $ 7,889 $ 7,889