CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2013	Jul. 31, 2012
Income Statement [Abstract]
Net sales	$ 304,158	$ 251,479	$ 576,773	$ 480,928
Cost of goods sold	204,739	176,636	384,961	337,395
Gross profit	99,419	74,843	191,812	143,533
Selling, general and administrative expenses	89,044	69,454	174,872	136,068
Depreciation and amortization	3,242	2,100	6,363	4,153
Operating profit	7,133	3,289	10,577	3,312
Equity loss in joint venture		146		433
Interest and financing charges, net	1,750	1,034	3,528	2,138
Income before income taxes	5,383	2,109	7,049	741
Income tax expense	2,045	802	2,678	282
Net income	3,338	1,307	4,371	459
Add: Loss attributable to noncontrolling interest	254	55	339	55
Income attributable to G-III	3,592	1,362	4,710	514
Basic:
Net income per common share	$ 0.18	$ 0.07	$ 0.23	$ 0.03
Weighted average number of shares outstanding	20,305	19,995	20,234	19,928
Diluted:
Net income per common share	$ 0.17	$ 0.07	$ 0.23	$ 0.03
Weighted average number of shares outstanding	20,753	20,331	20,686	20,334
Net income attributable to G-III	3,592	1,362	4,710	514
Other comprehensive income (loss):
Foreign currency translation adjustments	(136)	(57)	(2,515)	(55)
Other comprehensive income (loss)	(136)	(57)	(2,515)	(55)
Comprehensive income	$ 3,456	$ 1,305	$ 2,195	$ 459