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NET SALES - Disaggregate sales by major source (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of revenue:
Net sales	$ 75,843	$ 68,778	$ 221,477	$ 168,715
Boats and accessories
Disaggregation of revenue:
Net sales	74,642	67,127	217,711	165,001
Parts
Disaggregation of revenue:
Net sales	$ 1,201	$ 1,651	$ 3,766	$ 3,714

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