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Business Combination (Details) - Grand Design [Member] - USD ($)
$ / shares in Units, $ in Thousands
Apr. 11, 2017
Nov. 08, 2016
Business Acquisition [Line Items]    
Cash   $ 396,442
Winnebago shares: 4,586,555 at $27.05 per share   124,066
Total   $ 520,508
Shares issued for acquisition   4,586,555
Share price (in dollars per share)   $ 27.05
Shares sold after acquisition 2,293,277