CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Common Stock Held In Treasury	Total
Balance at beginning of period at Jan. 31, 2023	$ 264	$ 468,712	$ (11,653)	$ 983,944		$ 1,385,448
Balance at beginning of period, treasury at Jan. 31, 2023					$ (55,819)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity awards exercised/vested, net		(53)			53
Share-based compensation expense		3,837				3,837
Taxes paid for net share settlements		(22)				(22)
Other comprehensive loss, net			4,717			4,717
Repurchases of common stock					(16,769)	(16,769)
Net income (loss) attributable to G-III Apparel Group, Ltd.				3,236		3,236
Balance at end of period, treasury at Apr. 30, 2023					(72,535)	(72,535)
Balance at end of period at Apr. 30, 2023	264	472,474	(6,936)	987,180		1,380,447
Balance at beginning of period at Jan. 31, 2024	264	458,841	(3,207)	1,160,112		1,550,260
Balance at beginning of period, treasury at Jan. 31, 2024					(65,750)	(65,750)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity awards exercised/vested, net		(7,043)			7,043
Share-based compensation expense		6,580				6,580
Taxes paid for net share settlements		(7,534)				(7,534)
Other comprehensive loss, net			(6,883)			(6,883)
Repurchases of common stock					(28,350)	(28,350)
Net income (loss) attributable to G-III Apparel Group, Ltd.				5,802		5,802
Balance at end of period, treasury at Apr. 30, 2024					$ (87,057)	(87,057)
Balance at end of period at Apr. 30, 2024	$ 264	$ 450,844	$ (10,090)	$ 1,165,914		$ 1,519,875