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Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | $ 114,373 | $ 67,661 | $ 217,914 | $ 129,682
Income before provision for income taxes | 44,974 | 11,682 | 51,130 | 18,055
Malibu U.S. |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 68,081 | 61,488 | 128,941 | 118,014
Income before provision for income taxes | 40,845 | 11,215 | 44,717 | 17,276
Cobalt Boats, LLC |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 39,367 |  | 76,285 |
Malibu Australia |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 6,925 | 6,173 | 12,688 | 11,668
Income before provision for income taxes | 766 | 455 | 1,236 | 839
Operating Segments [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 114,373 | 67,661 | 217,914 | 129,682
Operating Segments [Member] | Malibu U.S. |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 70,226 | 63,672 | 133,258 | 122,440
Operating Segments [Member] | Cobalt Boats, LLC |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 39,367 | 0 | 76,285 | 0
Income before provision for income taxes | 3,369 | 0 | 5,193 | 0
Operating Segments [Member] | Malibu Australia |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 6,925 | 6,173 | 12,688 | 11,668
Intersegment Eliminations |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | (2,145) | (2,184) | (4,317) | (4,426)
Income before provision for income taxes | (6) | 12 | (16) | (60)
Intersegment Eliminations | Malibu U.S. |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 2,145 | $ 2,184 | 4,317 | $ 4,426
Intersegment Eliminations | Cobalt Boats, LLC |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | $ 0 |  | $ 0 |

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