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COMMON AND PREFERRED STOCK (Conversion of Preferred Stock) (Details) (IPO) | 1 Months Ended
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Feb. 29, 2012
Class of Stock [Line Items] |
Conversion of preferred stock (in shares) | 21,840,128 us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities
Series A-1 Convertible Redeemable Preferred Stock |
Class of Stock [Line Items] |
Conversion of preferred stock (in shares) | 16,439,480 us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities / us-gaap_ShareholdersEquityClassAxis = epam_SeriesAOnePreferredStockMember / us-gaap_SubsidiarySaleOfStockAxis = us-gaap_IPOMember
Series A-2 Convertible Redeemable Preferred Stock |
Class of Stock [Line Items] |
Conversion of preferred stock (in shares) | 3,078,432 us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities / us-gaap_ShareholdersEquityClassAxis = epam_SeriesATwoPreferredStockMember / us-gaap_SubsidiarySaleOfStockAxis = us-gaap_IPOMember
Series A-3 Convertible Preferred Stock |
Class of Stock [Line Items] |
Conversion of preferred stock (in shares) | 2,322,216 us-gaap_StockIssuedDuringPeriodSharesConversionOfConvertibleSecurities / us-gaap_ShareholdersEquityClassAxis = epam_SeriesAThreePreferredStockMember / us-gaap_SubsidiarySaleOfStockAxis = us-gaap_IPOMember

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- Definition Number of shares issued during the period as a result of the conversion of convertible securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-30) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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