XML 29 R76.htm IDEA: XBRL DOCUMENT v2.4.1.9
COMMON AND PREFERRED STOCK (Series A-1 Preferred) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
0 Months Ended 12 Months Ended
Jan. 20, 2006
Dec. 31, 2014
vote
Dec. 31, 2011
Jan. 20, 2006
Class of Stock [Line Items]        
Deemed dividend 6,803us-gaap_CumulativeDividends     6,803us-gaap_CumulativeDividends
Series A-1 Convertible Redeemable Preferred Stock        
Class of Stock [Line Items]        
Issuance of preferred stock (in shares) 657,354us-gaap_PreferredStockSharesIssued
/ us-gaap_ShareholdersEquityClassAxis
= epam_SeriesAOnePreferredStockMember
    657,354us-gaap_PreferredStockSharesIssued
/ us-gaap_ShareholdersEquityClassAxis
= epam_SeriesAOnePreferredStockMember
Compounded annual rate of return (as a percent) 12.50%epam_AnnualRateOfReturn
/ us-gaap_ShareholdersEquityClassAxis
= epam_SeriesAOnePreferredStockMember
     
Number of votes   1epam_PreferredStockNumberofVotes
/ us-gaap_ShareholdersEquityClassAxis
= epam_SeriesAOnePreferredStockMember
   
Redemption value     41,245us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
/ us-gaap_ShareholdersEquityClassAxis
= epam_SeriesAOnePreferredStockMember
 
Private Placement        
Class of Stock [Line Items]        
Common stock converted to preferred stock (in shares) 11,180,648epam_CommonSharesConvertedToPreferredStock
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
     
Private Placement | Common Stock        
Class of Stock [Line Items]        
Sale of stock price per share (in dollars per share) 1.13us-gaap_SaleOfStockPricePerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
    1.13us-gaap_SaleOfStockPricePerShare
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
Private Placement | Series A-1 Convertible Redeemable Preferred Stock        
Class of Stock [Line Items]        
Sale of stock price per share (in dollars per share) 12.17us-gaap_SaleOfStockPricePerShare
/ us-gaap_ShareholdersEquityClassAxis
= epam_SeriesAOnePreferredStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
    12.17us-gaap_SaleOfStockPricePerShare
/ us-gaap_ShareholdersEquityClassAxis
= epam_SeriesAOnePreferredStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
Number of installments   4epam_PreferredStockRedemptionNumberofInstallments
/ us-gaap_ShareholdersEquityClassAxis
= epam_SeriesAOnePreferredStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
   
Net proceeds from issuance of stock 8,000us-gaap_SaleOfStockConsiderationReceivedOnTransaction
/ us-gaap_ShareholdersEquityClassAxis
= epam_SeriesAOnePreferredStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
     
Stock issued during period shares convertible preferred new issues (in shares) 1,397,581epam_StockIssuedDuringPeriodSharesConvertiblePreferredNewIssues
/ us-gaap_ShareholdersEquityClassAxis
= epam_SeriesAOnePreferredStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
     
Minimum | Private Placement | Series A-1 Convertible Redeemable Preferred Stock        
Class of Stock [Line Items]        
Redemption period (in years)   30epam_PreferredStockRedemptionNumberofCalendarDays
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_ShareholdersEquityClassAxis
= epam_SeriesAOnePreferredStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_PrivatePlacementMember
   
Maximum | Private Placement | Series A-1 Convertible Redeemable Preferred Stock        
Class of Stock [Line Items]        
Redemption period (in days)   1 year 6 months