CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Retained Earnings	Common Stock Held In Treasury	Cumulative Effect, Period of Adoption, Adjustment	Total
Balance at beginning of period at Jan. 31, 2021	$ 264	$ 448,417	$ (2,094)		$ 916,683			$ 1,336,241
Balance at beginning of period, treasury at Jan. 31, 2021						$ (27,029)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity awards exercised/vested, net		(5,172)				5,172
Share-based compensation expense		17,424						17,424
Taxes paid for net share settlements		(4,340)						(4,340)
Other comprehensive loss, net			(12,435)					(12,435)
Repurchases of common stock						(17,300)		(17,300)
Net income (loss) attributable to G-III Apparel Group, Ltd.					200,593			200,593
Balance at end of period, treasury at Jan. 31, 2022						(39,157)
Balance at end of period at Jan. 31, 2022	264	456,329	(14,529)	$ (271)	1,117,005		$ (271)	1,519,912
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity awards exercised/vested, net		(10,287)				10,287
Share-based compensation expense		32,475						32,475
Taxes paid for net share settlements		(9,805)						(9,805)
Other comprehensive loss, net			2,876					2,876
Repurchases of common stock						(26,949)		(26,949)
Net income (loss) attributable to G-III Apparel Group, Ltd.					(133,061)			(133,061)
Balance at end of period, treasury at Jan. 31, 2023						(55,819)		(55,819)
Balance at end of period at Jan. 31, 2023	264	468,712	(11,653)		983,944			1,385,448
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity awards exercised/vested, net		(16,169)				16,169
Share-based compensation expense		17,164						17,164
Taxes paid for net share settlements		(10,866)						(10,866)
Other comprehensive loss, net			8,446					8,446
Repurchases of common stock						(26,100)		(26,100)
Net income (loss) attributable to G-III Apparel Group, Ltd.					176,168			176,168
Balance at end of period, treasury at Jan. 31, 2024						$ (65,750)		(65,750)
Balance at end of period at Jan. 31, 2024	$ 264	$ 458,841	$ (3,207)		$ 1,160,112			$ 1,550,260