REVENUE RECOGNITION - Summary of Revenues from Contracts with Customers by Major Product Category and Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2025	Mar. 30, 2025	Dec. 29, 2024	Sep. 29, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Oct. 01, 2023	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Revenue by Categories
Revenue	$ 79,516	$ 75,960	$ 63,368	$ 65,359	$ 54,318	$ 83,977	$ 89,750	$ 94,305	$ 284,203	$ 322,351	$ 609,903
Mastercraft Segment [Member]
Revenue by Categories
Revenue									240,763	262,736	468,656
Pontoon [Member]
Revenue by Categories
Revenue									43,440	59,615	141,247
Boats and trailers
Revenue by Categories
Revenue									267,036	303,795	592,557
Boats and trailers | Mastercraft Segment [Member]
Revenue by Categories
Revenue									226,016	245,963	452,903
Boats and trailers | Pontoon [Member]
Revenue by Categories
Revenue									41,020	57,832	139,654
Parts
Revenue by Categories
Revenue									13,396	14,809	14,992
Parts | Mastercraft Segment [Member]
Revenue by Categories
Revenue									11,704	13,567	13,922
Parts | Pontoon [Member]
Revenue by Categories
Revenue									1,692	1,242	1,070
Other revenue
Revenue by Categories
Revenue									3,771	3,747	2,354
Other revenue | Mastercraft Segment [Member]
Revenue by Categories
Revenue									3,043	3,206	1,831
Other revenue | Pontoon [Member]
Revenue by Categories
Revenue									$ 728	$ 541	$ 523