QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables)

12 Months Ended

Jan. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Schedule of summarized quarterly financial data

	Quarter Ended
	April 30,  2016			July 31,  2016			October 31,  2016			January 31,  2017
Net sales		$	457,403		$	442,267		$	883,476		$	603,289
Gross profit			165,669			155,643			321,452			198,097
Net income (loss) attributable to G-III			2,771			(1,293)			70,564			(20,104)
Net income (loss) per common share
Basic		$	0.06		$	(0.03)		$	1.54		$	(0.42)
Diluted		$	0.06		$	(0.03)		$	1.50		$	(0.42)

	Quarter Ended
	April 30,  2015			July 31,  2015			October 31,  2015			January 31,  2016
Net sales		$	432,965		$	473,884		$	909,865		$	527,428
Gross profit			154,427			168,340			337,057			178,814
Net income attributable to G-III			6,760			12,453			87,156			7,964
Net income per common share
Basic		$	0.15		$	0.28		$	1.92		$	0.17
Diluted		$	0.15		$	0.27		$	1.87		$	0.17