Net Income (Loss) per Common Share (Tables)

6 Months Ended

Jul. 31, 2017

Earnings Per Share [Abstract]

Schedule of reconciliation between basic and diluted net income per share

	Three Months Ended						Six Months Ended
	July 31,						July 31,
	2017			2016			2017			2016
	(In thousands, except per share amounts)
Net income (loss) attributable to G-III	$	(8,568	)	$	(1,293	)	$	(18,959	)	$	1,478
Basic net income (loss) per share:
Basic common shares		48,689			45,667			48,669			45,601
Basic net income (loss) per share	$	(0.18	)	$	(0.03	)	$	(0.39	)	$	0.03
Diluted net income (loss) per share:
Basic common shares		48,689			45,667			48,669			45,601
Diluted restricted stock awards and stock options		—			—			—			1,366
Diluted common shares		48,689			45,667			48,669			46,967
Diluted net income (loss) per share	$	(0.18	)	$	(0.03	)	$	(0.39	)	$	0.03