Document and Entity Information	3 Months Ended
	Apr. 30, 2014	Jun. 01, 2014
Document And Entity Information Abstract
Entity Registrant Name	G III APPAREL GROUP LTD /DE/
Entity Central Index Key	0000821002
Trading Symbol	giii
Current Fiscal Year End Date	--01-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock Shares Outstanding		20,541,266
Document Type	10-Q
Document Period End Date	Apr. 30, 2014
Amendment Flag	false
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1