XML 16 R54.htm IDEA: XBRL DOCUMENT v2.4.1.9
STOCKHOLDERS' EQUITY (Detail Textuals) (USD $)
 1 Months Ended 12 Months Ended
Jun. 30, 2014
Jan. 31, 2015
Jan. 31, 2014
Jan. 31, 2013
Jan. 31, 2012
Sep. 30, 2011
Stockholders Equity [Line Items]            
Number of common share sold 1,725,000us-gaap_StockIssuedDuringPeriodSharesNewIssues          
Number of shares sold to underwriters 225,000giii_NumberOfSharesSoldToUnderwriters          
Public offering price per share (in dollars per share) $ 77.63us-gaap_SharesIssuedPricePerShare          
Net proceed from offering $ 128,700,000us-gaap_StockIssuedDuringPeriodValueNewIssues $ 128,686,000us-gaap_StockIssuedDuringPeriodValueNewIssues        
Common stock, shares, repurchase program           2,000,000us-gaap_StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased
Repurchases of common stock         125,000us-gaap_TreasuryStockSharesAcquired  
Repurchases of stock, value         2,900,000us-gaap_TreasuryStockValueAcquiredCostMethod  
Share repurchase description   The Company did not repurchase any shares during fiscal 2015. The Company's credit agreement permits G-III to make payments for cash dividends, stock redemptions and share repurchases subject to compliance with certain covenants.        
Shares available for grant   480,683us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant        
Expected dividend yield       0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate    
Weighted average remaining term for stock options outstanding   5 years 2 months 12 days        
Aggregate intrinsic value for stock options outstanding   17,600,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue        
Aggregate intrinsic value for stock options exercisable   10,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableAggregateIntrinsicValue        
Proceeds from exercise of stock options   729,000,000giii_ProceedsFromStockOptionsExercisedGross 1,900,000giii_ProceedsFromStockOptionsExercisedGross      
Intrinsic value of stock options exercised   2,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue 4,000,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue      
Expected date through which unrecognized stock compensation is recognized   Jan. 31, 2017        
Weighted average grant date fair value       $ 12.06us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue $ 12.97us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue  
Maximum            
Stockholders Equity [Line Items]            
Term of option awards   10 years        
Restricted Stock Units (RSUs)            
Stockholders Equity [Line Items]            
Recognized compensation expense   11,600,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember		 9,200,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember		 7,000,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember		    
Unrecognized stock compensation related to restricted stock units   32,200,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember		 26,100,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember		 21,400,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember		    
Restricted Stock Units (RSUs) | Minimum            
Stockholders Equity [Line Items]            
Vesting period of awards   3 years        
Restricted Stock Units (RSUs) | Maximum            
Stockholders Equity [Line Items]            
Vesting period of awards   5 years        
Stock Options            
Stockholders Equity [Line Items]            
Recognized compensation expense   541,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		 680,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		 1,000,000us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember		    
Unrecognized stock compensation related to unvested option awards   $ 533,000us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember