COMMITMENTS AND CONTINGENCIES - Textuals (Details) $ in Thousands, $ in Millions			1 Months Ended	12 Months Ended				35 Months Ended
	Mar. 14, 2018 USD ($)	Mar. 14, 2018 CAD ($)	Oct. 27, 2017	Jan. 31, 2022 USD ($)	Jan. 31, 2022 CAD ($)	Jan. 31, 2021 USD ($)	Jan. 31, 2020 USD ($)	Jan. 31, 2021 USD ($)	Jan. 31, 2021 CAD ($)
Commitment And Contingencies [Line Items]
Advertising expense				$ 93,100		$ 55,300	$ 94,700
Interest paid				800	$ 1.0
Deferred expenses				0				$ 11,600	$ 14.7
CBSA
Commitment And Contingencies [Line Items]
Reassessment period to additional duties			90 days
License Agreements
Commitment And Contingencies [Line Items]
Royalty expense				145,100		116,800	178,800
Advertising expense				$ 41,200		$ 29,500	$ 48,300
G-III Apparel Canada ULC
Commitment And Contingencies [Line Items]
Value of bond issued for prepayments of additional duties	$ 20,900	$ 26.9