Acquisitions - Unaudited Proforma Information (Details) - Boat Holdings, LLC - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Net sales	$ 6,782,518	$ 6,429,700	$ 5,980,741
Net income	$ 328,800	$ 360,690	$ 182,749
Basic earnings per share (in dollars per share)	$ 5.35	$ 5.77	$ 2.90
Diluted earnings per common share (in dollars per share)	$ 5.28	$ 5.64	$ 2.85

The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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-Publisher FASB
-Name Accounting Standards Codification
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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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