CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2022	Oct. 31, 2021
Income Statement [Abstract]
Net sales	$ 1,078,299	$ 1,015,392	$ 2,372,300	$ 2,018,383
Cost of goods sold	733,672	667,882	1,552,708	1,282,526
Gross profit	344,627	347,510	819,592	735,857
Selling, general and administrative expenses	239,893	182,360	616,351	470,803
Depreciation and amortization	7,270	7,024	20,021	21,166
Asset impairments, net of gain on lease terminations	250		212
Operating profit (loss)	97,214	158,126	183,008	243,888
Other (loss) income	(2,795)	898	24,823	4,693
Interest and financing charges, net	(16,052)	(12,354)	(40,805)	(36,932)
Income before income taxes	78,367	146,670	167,026	211,649
Income tax expense (benefit)	17,521	40,198	39,489	59,692
Net income	60,846	106,472	127,537	151,957
Less: (Loss) income attributable to noncontrolling interests	(257)	(202)	(519)	(206)
Net income attributable to G-III Apparel Group, Ltd.	$ 61,103	$ 106,674	$ 128,056	$ 152,163
Basic:
Net income per common share	$ 1.29	$ 2.20	$ 2.68	$ 3.14
Weighted average number of shares outstanding (in shares)	47,488	48,567	47,832	48,474
Diluted:
Net income per common share	$ 1.26	$ 2.16	$ 2.62	$ 3.07
Weighted average number of shares outstanding (in shares)	48,475	49,458	48,866	49,499
Other comprehensive loss:
Foreign currency translation adjustments	$ (26,473)	$ (4,402)	$ (28,111)	$ (9,340)
Other comprehensive loss	(26,473)	(4,402)	(28,111)	(9,340)
Comprehensive income	34,373	102,070	99,426	142,617
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest [Abstract]
Net (loss) income	(257)	(202)	(519)	(206)
Foreign currency translation adjustments	(45)		(104)	6
Comprehensive income attributable to noncontrolling interests	(302)	(202)	(623)	(200)
Comprehensive income attributable to G-III Apparel Group, Ltd	$ 34,071	$ 101,868	$ 98,803	$ 142,417