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Revenue Recognition (Tables) | 9 Months Ended
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Jun. 30, 2021
Revenue From Contract With Customer [Abstract] |
Summary of Percentage on Timing of Revenue Recognition | The following tables set forth percentages on the timing of revenue recognition for the three and nine months ended June 30,
| Retail Operations |  |  | Product Manufacturing |
| Three Months Ended |  |  | Three Months Ended |
| June 30, 2020 |  |  | June 30, 2021 |  |  | June 30, 2020 |  |  | June 30, 2021 |
Goods and services transferred at a point in time |  | 94.1 | % |  |  | 92.4 | % |  |  | - |  |  |  | 100.0 | %
Goods and services transferred over time |  | 5.9 | % |  |  | 7.6 | % |  |  | - |  |  |  | - |
Total revenue |  | 100.0 | % |  |  | 100.0 | % |  |  | - |  |  |  | 100.0 | %
| Retail Operations |  |  | Product Manufacturing |
| Nine Months Ended |  |  | Nine Months Ended |
| June 30, 2020 |  |  | June 30, 2021 |  |  | June 30, 2020 |  |  | June 30, 2021 |
Goods and services transferred at a point in time |  | 92.6 | % |  |  | 92.2 | % |  |  | - |  |  |  | 100.0 | %
Goods and services transferred over time |  | 7.4 | % |  |  | 7.8 | % |  |  | - |  |  |  | - |
Total revenue |  | 100.0 | % |  |  | 100.0 | % |  |  | - |  |  |  | 100.0 | %

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- Definition Schedule of percentage on timing of revenue recognition. + References No definition available. + Details
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Namespace Prefix: | hzo_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration