REPORTABLE OPERATING SEGMENTS - Schedule of Operating Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Net sales	$ 959,758	$ 1,560,307	$ 1,091,907	$ 675,791	$ 791,571	$ 1,345,640	$ 875,614	$ 614,461	$ 4,287,763	$ 3,627,286	$ 3,150,339
Income (loss) from operations	$ 144,262	$ 487,899	$ 224,617	$ 70,736	$ 105,919	$ 362,660	$ 127,831	$ 56,341	927,514	652,751	564,707
Depreciation, amortization, and accretion									57,587	47,858	42,878
Capital expenditures									93,065	94,553	57,714
Segment reconciling items
Segment Reporting Information [Line Items]
Income (loss) from operations									(557,508)	(442,275)	(395,076)
Depreciation, amortization, and accretion									41,831	34,154	30,118
Capital expenditures									64,348	72,709	44,542
Wholesale | Reportable segments | UGG brand wholesale
Segment Reporting Information [Line Items]
Net sales									1,115,241	1,004,356	1,088,082
Income (loss) from operations									349,509	267,013	315,240
Depreciation, amortization, and accretion									526	611	416
Capital expenditures									334	826	109
Wholesale | Reportable segments | HOKA brand wholesale
Segment Reporting Information [Line Items]
Net sales									1,126,126	925,877	628,674
Income (loss) from operations									376,286	285,257	155,344
Depreciation, amortization, and accretion									856	945	701
Capital expenditures									315	1,229	1,191
Wholesale | Reportable segments | Teva brand wholesale
Segment Reporting Information [Line Items]
Net sales									113,739	149,111	129,094
Income (loss) from operations									18,685	32,595	33,294
Wholesale | Reportable segments | Sanuk brand wholesale
Segment Reporting Information [Line Items]
Net sales									17,175	27,678	30,316
Income (loss) from operations									(12,836)	2,891	6,463
Depreciation, amortization, and accretion									1,490	1,490	1,490
Wholesale | Reportable segments | Other brands wholesale
Segment Reporting Information [Line Items]
Net sales									60,026	53,653	60,573
Income (loss) from operations									4,722	(1,678)	14,028
Depreciation, amortization, and accretion									380	382	382
Direct-to-Consumer | Reportable segments | Direct-to-Consumer
Segment Reporting Information [Line Items]
Net sales									1,855,456	1,466,611	1,213,600
Income (loss) from operations									748,656	508,948	435,414
Depreciation, amortization, and accretion									12,504	10,276	9,771
Capital expenditures									$ 28,068	$ 19,789	$ 11,872