Basis of Presentation	9 Months Ended
Oct. 31, 2017
Accounting Policies [Abstract]
Basis of Presentation	Note 1 – Basis of Presentation As used in these financial statements, the term “Company” or “G-III” refers to G-III Apparel Group, Ltd. and its subsidiaries. The Company designs, manufactures and markets an extensive range of apparel, including outerwear, dresses, sportswear, swimwear, women’s suits and women’s performance wear, as well as women’s handbags, footwear, small leather goods, cold weather accessories and luggage. The Company also operates retail stores and licenses its proprietary brands under several product categories. The Company consolidates the accounts of its wholly-owned and majority-owned subsidiaries. KL North America B.V. (“KLNA”) is a Dutch limited liability company that is a joint venture that is 49% owned by the Company. Karl Lagerfeld Holding B.V. (“KLH”), formerly known as Kingdom Holdings 1 B.V., is a Dutch limited liability company that is 19% owned by the Company. Fabco Holding B.V. (“Fabco”) is a Dutch limited liability company that is a joint venture that is 49% owned by the Company. These investments are accounted for using the equity method of accounting. All material intercompany balances and transactions have been eliminated. Vilebrequin International SA (“Vilebrequin”), a Swiss corporation that is wholly-owned by the Company, KLH and KLNA report results on a calendar year basis rather than on the January 31 fiscal year basis used by the Company. The Company’s retail stores report results on a 52/53-week fiscal year. The results for the three and nine-month periods ended October 31, 2017 are not necessarily indicative of the results expected for the entire fiscal year, given the recent acquisition and integration of Donna Karan International Inc.(“DKI”) and the seasonal nature of the Company’s business. The accompanying financial statements included herein are unaudited. All adjustments (consisting of only normal recurring adjustments) necessary for a fair presentation of the financial position, results of operations and cash flows for the interim period presented have been reflected. The accompanying financial statements should be read in conjunction with the financial statements and notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended January 31, 2017 filed with the Securities and Exchange Commission (the “SEC”). The Company’s international subsidiaries use different functional currencies, which are the local selling currency. In accordance with the authoritative guidance, operating assets and liabilities of the Company’s foreign operations are translated from foreign currency into U.S. dollars at period-end rates, while income and expenses are translated at the weighted-average exchange rates for the period. The related translation adjustments are reflected as a foreign currency translation adjustment in accumulated other comprehensive loss within stockholders’ equity.

Basis of Presentation

9 Months Ended

Oct. 31, 2017

Note 1 – Basis of Presentation

As used in these financial statements, the term “Company” or “G-III” refers to G-III Apparel Group, Ltd. and its subsidiaries. The Company designs, manufactures and markets an extensive range of apparel, including outerwear, dresses, sportswear, swimwear, women’s suits and women’s performance wear, as well as women’s handbags, footwear, small leather goods, cold weather accessories and luggage. The Company also operates retail stores and licenses its proprietary brands under several product categories.

The Company consolidates the accounts of its wholly-owned and majority-owned subsidiaries. KL North America B.V. (“KLNA”) is a Dutch limited liability company that is a joint venture that is 49% owned by the Company. Karl Lagerfeld Holding B.V. (“KLH”), formerly known as Kingdom Holdings 1 B.V., is a Dutch limited liability company that is 19% owned by the Company. Fabco Holding B.V. (“Fabco”) is a Dutch limited liability company that is a joint venture that is 49% owned by the Company. These investments are accounted for using the equity method of accounting. All material intercompany balances and transactions have been eliminated. Vilebrequin International SA (“Vilebrequin”), a Swiss corporation that is wholly-owned by the Company, KLH and KLNA report results on a calendar year basis rather than on the January 31 fiscal year basis used by the Company. The Company’s retail stores report results on a 52/53-week fiscal year.

The results for the three and nine-month periods ended October 31, 2017 are not necessarily indicative of the results expected for the entire fiscal year, given the recent acquisition and integration of Donna Karan International Inc.(“DKI”) and the seasonal nature of the Company’s business. The accompanying financial statements included herein are unaudited. All adjustments (consisting of only normal recurring adjustments) necessary for a fair presentation of the financial position, results of operations and cash flows for the interim period presented have been reflected.

The accompanying financial statements should be read in conjunction with the financial statements and notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended January 31, 2017 filed with the Securities and Exchange Commission (the “SEC”).

The Company’s international subsidiaries use different functional currencies, which are the local selling currency. In accordance with the authoritative guidance, operating assets and liabilities of the Company’s foreign operations are translated from foreign currency into U.S. dollars at period-end rates, while income and expenses are translated at the weighted-average exchange rates for the period. The related translation adjustments are reflected as a foreign currency translation adjustment in accumulated other comprehensive loss within stockholders’ equity.