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Segment Information (Details) $ in Thousands		3 Months Ended		6 Months Ended
Segment Information (Details) $ in Thousands	Jun. 30, 2019 USD ($) segment	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2019 USD ($) segment	Dec. 31, 2018 USD ($)
Segment Reporting Information [Line Items]
Net sales		$ 180,112	$ 165,793	$ 352,192	$ 289,276
Income before provision for income taxes		22,639	19,117	44,165	34,715
Assets	$ 451,314	474,705		$ 474,705
Malibu U.S., Malibu Australia, Cobalt and Pursuit
Segment Reporting Information [Line Items]
Number of reportable segments \| segment	4
Malibu U.S. And Malibu Australia
Segment Reporting Information [Line Items]
Number of reportable segments \| segment				1
Malibu, Cobalt And Pursuit
Segment Reporting Information [Line Items]
Number of reportable segments \| segment				3
Malibu
Segment Reporting Information [Line Items]
Net sales		97,327	90,020	$ 183,207	165,243
Cobalt
Segment Reporting Information [Line Items]
Net sales		48,994	45,846	99,145	94,106
Pursuit
Segment Reporting Information [Line Items]
Net sales		33,791	29,927	69,840	29,927
Operating Segments \| Malibu
Segment Reporting Information [Line Items]
Net sales		97,327	90,020	183,207	165,243
Income before provision for income taxes		15,200	11,179	26,661	19,930
Assets	$ 185,154	198,885		198,885
Operating Segments \| Cobalt
Segment Reporting Information [Line Items]
Net sales		48,994	45,846	99,145	94,106
Income before provision for income taxes		4,853	5,417	10,760	12,264
Assets	151,481	153,555		153,555
Operating Segments \| Pursuit
Segment Reporting Information [Line Items]
Net sales		33,791	29,927	69,840	29,927
Income before provision for income taxes		2,586	$ 2,521	6,744	$ 2,521
Assets	$ 114,679	$ 122,265		$ 122,265