Basis of Presentation	9 Months Ended
Oct. 31, 2016
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. The Company consolidates the accounts of all its wholly-owned and majority-owned subsidiaries. KL North America BV (“KLNA”) is a Dutch limited liability company which is a joint venture that is 49% owned by the Company. Kingdom Holdings 1 B.V. (“KH1”) is a Dutch limited liability company that is 19% 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, which is wholly-owned by the Company, KH1 and KLNA report results on a calendar year basis rather than on the January 31 fiscal year basis used by the Company. The results for the nine month period ended October 31, 2016 are not necessarily indicative of the results expected for the entire fiscal year, given 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, 2016 filed with the Securities and Exchange Commission (the “SEC”). On April 1, 2015, the Board of Directors approved a two-for-one stock split of the Company’s outstanding shares of common stock, to be effected in the form of a stock dividend. The stock dividend was paid to stockholders of record as of the close of market on April 20, 2015 and was effected on May 1, 2015. All share and per share information has been retroactively adjusted to reflect this stock split. The Company’s international subsidiaries use different functional currencies, which are the local selling currency. In accordance with the authoritative guidance, 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 income within stockholders’ equity. Certain reclassifications have been made to the Condensed Consolidated Statements of Cash Flows as a result of the Company’s electing to apply the amendments related to the presentation of excess tax benefits on the statement of cash flows using a retrospective transition method as prescribed by Accounting Standard Update (“ASU”) 2016-09. This change resulted in a $10.5 million decrease in net cash used in operating activities and a corresponding decrease in net cash provided by financing activities in the accompanying Condensed Consolidated Statement of Cash Flows for the period ended October 31, 2015, compared to the amounts previously reported.

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.

The Company consolidates the accounts of all its wholly-owned and majority-owned subsidiaries. KL North America BV (“KLNA”) is a Dutch limited liability company which is a joint venture that is 49% owned by the Company. Kingdom Holdings 1 B.V. (“KH1”) is a Dutch limited liability company that is 19% 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, which is wholly-owned by the Company, KH1 and KLNA report results on a calendar year basis rather than on the January 31 fiscal year basis used by the Company.

The results for the nine month period ended October 31, 2016 are not necessarily indicative of the results expected for the entire fiscal year, given 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, 2016 filed with the Securities and Exchange Commission (the “SEC”).

On April 1, 2015, the Board of Directors approved a two-for-one stock split of the Company’s outstanding shares of common stock, to be effected in the form of a stock dividend. The stock dividend was paid to stockholders of record as of the close of market on April 20, 2015 and was effected on May 1, 2015. All share and per share information has been retroactively adjusted to reflect this stock split.

The Company’s international subsidiaries use different functional currencies, which are the local selling currency. In accordance with the authoritative guidance, 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 income within stockholders’ equity.

Certain reclassifications have been made to the Condensed Consolidated Statements of Cash Flows as a result of the Company’s electing to apply the amendments related to the presentation of excess tax benefits on the statement of cash flows using a retrospective transition method as prescribed by Accounting Standard Update (“ASU”) 2016-09. This change resulted in a $10.5 million decrease in net cash used in operating activities and a corresponding decrease in net cash provided by financing activities in the accompanying Condensed Consolidated Statement of Cash Flows for the period ended October 31, 2015, compared to the amounts previously reported.