CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Treasury Stock, Common [Member]	Total
Balance at beginning of period at Jan. 31, 2022	$ 264	$ 456,329	$ (14,529)	$ 1,117,005		$ 1,519,912
Balance at beginning of period, treasury at Jan. 31, 2022					$ (39,157)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity awards exercised/vested, net		(7,204)			7,204
Share-based compensation expense		20,549				20,549
Taxes paid for net share settlements		(8,675)				(8,675)
Other comprehensive gain (loss), net			(4,128)			(4,128)
Net income (loss) attributable to G-III Apparel Group, Ltd.				30,634		30,634
Balance at end of period, treasury at Apr. 30, 2022					(31,953)	(31,953)
Balance at end of period at Apr. 30, 2022	264	460,999	(18,657)	1,147,639		1,558,292
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)	(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 gain (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