Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ 15,647	$ (51,970)	$ 4,837	$ (30,684)
Other comprehensive (loss) income, net of tax:
Foreign currency translation adjustments	(826)	8,291	(3,047)	5,232
Interest rate swap contract	(16)	(85)	(81)	(119)
Total other comprehensive (loss) income, net of tax	(842)	8,206	(3,128)	5,113
Comprehensive income (loss)	14,805	(43,764)	1,709	(25,571)
Comprehensive income (loss) attributable to non-controlling interests	211	863	(145)	518
Comprehensive income (loss) attributable to MarineMax, Inc.	$ 14,594	$ (44,627)	$ 1,854	$ (26,089)

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.

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