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NET SALES - Disaggregate sales by major source (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of revenue:
Net sales	$ 67,259	$ 40,818	$ 145,634	$ 99,937
Boats and accessories
Disaggregation of revenue:
Net sales	65,810	39,652	143,069	97,874
Parts
Disaggregation of revenue:
Net sales	$ 1,449	$ 1,166	$ 2,565	$ 2,063

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