CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2022	Jul. 31, 2021
Income Statement [Abstract]
Net sales	$ 605,244	$ 483,081	$ 1,294,001	$ 1,002,991
Cost of goods sold	376,318	290,203	819,036	614,644
Gross profit	228,926	192,878	474,965	388,347
Selling, general and administrative expenses	191,041	146,840	376,458	288,443
Depreciation and amortization	6,656	7,098	12,751	14,142
Gain on lease modifications	(29)		(38)
Operating profit (loss)	31,258	38,940	85,794	85,762
Other (loss) income	30,325	1,975	27,618	3,795
Interest and financing charges, net	(12,550)	(12,574)	(24,753)	(24,578)
Income before income taxes	49,033	28,341	88,659	64,979
Income tax expense (benefit)	12,968	9,235	21,968	19,494
Net income	36,065	19,106	66,691	45,485
Less: (Loss) income attributable to noncontrolling interests	(254)	(62)	(262)	(4)
Net income attributable to G-III Apparel Group, Ltd.	$ 36,319	$ 19,168	$ 66,953	$ 45,489
Basic:
Net income per common share	$ 0.76	$ 0.40	$ 1.39	$ 0.94
Weighted average number of shares outstanding (in shares)	47,999	48,476	48,007	48,427
Diluted:
Net income per common share	$ 0.74	$ 0.39	$ 1.36	$ 0.92
Weighted average number of shares outstanding (in shares)	49,019	49,523	49,061	49,502
Other comprehensive loss:
Foreign currency translation adjustments	$ 2,493	$ 2,021	$ (1,637)	$ (4,938)
Other comprehensive loss	2,493	2,021	(1,637)	(4,938)
Comprehensive income	38,558	21,127	65,054	40,547
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest [Abstract]
Net (loss) income	(254)	(62)	(262)	(4)
Foreign currency translation adjustments	(62)	10	(60)	6
Comprehensive income attributable to noncontrolling interests	(316)	(52)	(322)	2
Comprehensive income attributable to G-III Apparel Group, Ltd	$ 38,242	$ 21,075	$ 64,732	$ 40,549