XML 52 R35.htm IDEA: XBRL DOCUMENT
v3.7.0.1

STOCK-BASED COMPENSATION - Restricted Stock and Restricted Stock units Activity (Details) | 3 Months Ended
--- | ---
Mar. 31, 2017 $ / shares shares
Service Period | Equity Classified Award | Equity-Settled Award | Restricted Stock |
Number of Shares |
Unvested awards outstanding at January 1, 2017 | shares | 154,125
Awards granted | shares | 0
Awards modified | shares | 0
Awards vested | shares | (1,437)
Awards forfeited/cancelled | shares | 0
Unvested awards outstanding at March 31, 2017 | shares | 152,688
Weighted Average Grant Date Fair Value Per Share |
Unvested awards outstanding at January 1, 2016 | $ / shares | $ 40.89
Awards granted | $ / shares | 0.00
Awards modified | $ / shares | 0.00
Awards vested | $ / shares | 20.64
Awards forfeited/cancelled | $ / shares | 0.00
Unvested awards outstanding at September 30, 2016 | $ / shares | $ 41.08
Service Period | Equity Classified Award | Equity-Settled Award | Restricted Stock Units |
Number of Shares |
Unvested awards outstanding at January 1, 2017 | shares | 485,188
Awards granted | shares | 380,577
Awards modified | shares | (2,570)
Awards vested | shares | (116,183)
Awards forfeited/cancelled | shares | (19,036)
Unvested awards outstanding at March 31, 2017 | shares | 727,976
Weighted Average Grant Date Fair Value Per Share |
Unvested awards outstanding at January 1, 2016 | $ / shares | $ 67.69
Awards granted | $ / shares | 73.27
Awards modified | $ / shares | 48.49
Awards vested | $ / shares | 65.32
Awards forfeited/cancelled | $ / shares | 67.45
Unvested awards outstanding at September 30, 2016 | $ / shares | $ 71.06
Service Period | Liability Classified Award | Cash-Settled Award | Restricted Stock Units |
Number of Shares |
Unvested awards outstanding at January 1, 2017 | shares | 204,501
Awards granted | shares | 138,584
Awards modified | shares | 2,570
Awards vested | shares | (51,928)
Awards forfeited/cancelled | shares | (616)
Unvested awards outstanding at March 31, 2017 | shares | 293,111
Weighted Average Grant Date Fair Value Per Share |
Unvested awards outstanding at January 1, 2016 | $ / shares | $ 70.53
Awards granted | $ / shares | 73.27
Awards modified | $ / shares | 73.27
Awards vested | $ / shares | 70.56
Awards forfeited/cancelled | $ / shares | 70.52
Unvested awards outstanding at September 30, 2016 | $ / shares | $ 71.84
Performance Target | Equity Classified Award | Equity-Settled Award | Restricted Stock |
Number of Shares |
Unvested awards outstanding at January 1, 2017 | shares | 5,573
Awards granted | shares | 0
Awards vested | shares | (2,552)
Awards forfeited/cancelled | shares | 0
Unvested awards outstanding at March 31, 2017 | shares | 3,021
Weighted Average Grant Date Fair Value Per Share |
Unvested awards outstanding at January 1, 2016 | $ / shares | $ 33.47
Awards granted | $ / shares | 0.00
Awards vested | $ / shares | 36.57
Awards forfeited/cancelled | $ / shares | 0.00
Unvested awards outstanding at September 30, 2016 | $ / shares | $ 30.85
Performance Target | Equity Classified Award | Equity-Settled Award | Restricted Stock Units |
Number of Shares |
Unvested awards outstanding at January 1, 2017 | shares | 4,667
Awards granted | shares | 0
Awards vested | shares | 0
Awards forfeited/cancelled | shares | 0
Unvested awards outstanding at March 31, 2017 | shares | 4,667
Weighted Average Grant Date Fair Value Per Share |
Unvested awards outstanding at January 1, 2016 | $ / shares | $ 70.22
Awards granted | $ / shares | 0.00
Awards vested | $ / shares | 0.00
Awards forfeited/cancelled | $ / shares | 0.00
Unvested awards outstanding at September 30, 2016 | $ / shares | $ 70.22
Performance Target | Liability Classified Award | Equity-Settled Award | Restricted Stock |
Number of Shares |
Unvested awards outstanding at January 1, 2017 | shares | 105,602
Awards granted | shares | 0
Awards vested | shares | 0
Awards forfeited/cancelled | shares | 0
Unvested awards outstanding at March 31, 2017 | shares | 105,602
Weighted Average Grant Date Fair Value Per Share |
Unvested awards outstanding at January 1, 2016 | $ / shares | $ 38.86
Awards granted | $ / shares | 0.00
Awards vested | $ / shares | 0.00
Awards forfeited/cancelled | $ / shares | 0.00
Unvested awards outstanding at September 30, 2016 | $ / shares | $ 38.86

X
- Definition The number of awards modified during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References No definition available. + Details
Name: | epam_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsModifiedinPeriod
Namespace Prefix: | epam_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average fair value at modification date for nonvested equity-based awards modified during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References No definition available. + Details
Name: | epam_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsModifiedinPeriodWeightedAverageModificationDateFairValue
Namespace Prefix: | epam_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | epam_AwardMetricAxis=epam_ServicePeriodMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | epam_AwardClassificationAxis=epam_EquityClassifiedAwardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | epam_AwardSettlementTypeAxis=epam_EquitySettledAwardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | epam_AwardClassificationAxis=epam_LiabilityClassifiedAwardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | epam_AwardSettlementTypeAxis=epam_CashSettledAwardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | epam_AwardMetricAxis=epam_PerformanceTargetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |