CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2014	Jul. 31, 2013
Income Statement [Abstract]
Net sales	$ 424,010	$ 304,158	$ 790,202	$ 576,773
Cost of goods sold	275,951	204,739	511,966	384,961
Gross profit	148,059	99,419	278,236	191,812
Selling, general and administrative expenses	131,609	89,044	254,050	174,872
Depreciation and amortization	4,955	3,242	9,181	6,363
Operating profit	11,495	7,133	15,005	10,577
Interest and financing charges, net	1,965	1,750	3,718	3,528
Income before income taxes	9,530	5,383	11,287	7,049
Income tax expense	3,622	2,045	4,289	2,678
Net income	5,908	3,338	6,998	4,371
Add: Loss attributable to noncontrolling interest	328	254	528	339
Income attributable to G-III	6,236	3,592	7,526	4,710
Basic:
Net income per common share	$ 0.29	$ 0.18	$ 0.36	$ 0.23
Weighted average number of shares outstanding	21,187	20,305	20,843	20,234
Diluted:
Net income per common share	$ 0.29	$ 0.17	$ 0.35	$ 0.23
Weighted average number of shares outstanding	21,660	20,753	21,346	20,686
Net income attributable to G-III	6,236	3,592	7,526	4,710
Other comprehensive loss:
Foreign currency translation adjustments	(293)	(136)	(329)	(2,515)
Other comprehensive loss	(293)	(136)	(329)	(2,515)
Comprehensive income	$ 5,943	$ 3,456	$ 7,197	$ 2,195