XML 22 R37.htm IDEA: XBRL DOCUMENT v2.4.1.9
SHARE-BASED COMPENSATION: (Details 3) (USD $)
In Millions, except Share data, unless otherwise specified
9 Months Ended 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Mar. 31, 2014
Non-vested restricted stock unit activity      
Outstanding at the end of the period (in shares) 245,404us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber    
Non-vested restricted stock units, Weighted average fair value per share at grant date      
Outstanding at the end of the period (in dollars per share) $ 40.00us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue    
Weighted-average remaining contractual term      
Weighted-average remaining contractual term at the beginning of the period 2 years 3 months    
Weighted-average remaining contractual term at the end of the period 2 years 3 months    
Restricted Stock Unit Activity - Other disclosures      
Aggregate fair value of restricted stock units granted $ 1.0acxm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodTotalFairValue    
Minimum      
Restricted Stock Unit Activity - Other disclosures      
Performance share awards vested (as a percent) 0.00%acxm_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfEquityInstrumentOtherThanOptionsPercentageOfVesting
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Maximum      
Restricted Stock Unit Activity - Other disclosures      
Performance share awards vested (as a percent) 100.00%acxm_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfEquityInstrumentOtherThanOptionsPercentageOfVesting
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
   
Performance-based      
Share-based compensation      
Share-based compensation expense 0.2us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Future share-based compensation expense expected 0.8us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Period for recognition of unrecognized stock-based compensation expense 3 years    
Non-vested restricted stock unit activity      
Granted (in shares) 201,464us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Outstanding at the end of the period (in shares) 201,464us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Non-vested restricted stock units, Weighted average fair value per share at grant date      
Granted (in dollars per share) $ 5.18us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Outstanding at the end of the period (in dollars per share) $ 5.18us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Weighted-average remaining contractual term      
Weighted-average remaining contractual term at the beginning of the period 2 years 3 months    
Weighted-average remaining contractual term at the end of the period 2 years 3 months    
Restricted Stock Unit Activity - Other disclosures      
Performance share awards vested (as a percent) 100.00%acxm_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfEquityInstrumentOtherThanOptionsPercentageOfVesting
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Consecutive trading days during the performance period 20 days    
Performance-based | Minimum      
Restricted Stock Unit Activity - Other disclosures      
Price (in dollars per share) $ 40us-gaap_SharePrice
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Performance-based | Maximum      
Restricted Stock Unit Activity - Other disclosures      
Price (in dollars per share) $ 70us-gaap_SharePrice
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Restricted stock units      
Share-based compensation      
Share-based compensation expense 12.8us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
8.6us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
 
Future share-based compensation expense expected 39.5us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
   
Period for recognition of unrecognized stock-based compensation expense 4 years    
Restricted stock units | Time-vesting      
Non-vested restricted stock unit activity      
Outstanding at the beginning of the period (in shares) 1,078,029us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= acxm_TimeBasedVestingMember
   
Granted (in shares) 1,650,662us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= acxm_TimeBasedVestingMember
   
Vested (in shares) (404,428)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= acxm_TimeBasedVestingMember
   
Forfeited or cancelled (in shares) (207,608)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= acxm_TimeBasedVestingMember
   
Outstanding at the end of the period (in shares) 2,116,655us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= acxm_TimeBasedVestingMember
  1,078,029us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= acxm_TimeBasedVestingMember
Non-vested restricted stock units, Weighted average fair value per share at grant date      
Outstanding at the beginning of the period (in dollars per share) $ 18.46us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= acxm_TimeBasedVestingMember
   
Granted (in dollars per share) $ 21.43us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= acxm_TimeBasedVestingMember
   
Vested (in dollars per share) $ 17.94us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= acxm_TimeBasedVestingMember
   
Forfeited or cancelled (in dollars per share) $ 22.02us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= acxm_TimeBasedVestingMember
   
Outstanding at the end of the period (in dollars per share) $ 21.59us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= acxm_TimeBasedVestingMember
  $ 18.46us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= acxm_TimeBasedVestingMember
Weighted-average remaining contractual term      
Weighted-average remaining contractual term at the beginning of the period 2 years 2 months 16 days   2 years 2 months 1 day
Weighted-average remaining contractual term at the end of the period 2 years 2 months 16 days   2 years 2 months 1 day
Restricted Stock Unit Activity - Other disclosures      
Aggregate fair value of restricted stock units granted 35.4acxm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodTotalFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= acxm_TimeBasedVestingMember
   
Restricted stock units | Vesting in equal annual increments over four years      
Non-vested restricted stock unit activity      
Granted (in shares) 673,482us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= acxm_TimeBasedVestingOverFourYearsMember
   
Restricted Stock Unit Activity - Other disclosures      
Award vesting period 4 years    
Restricted stock units | Vesting in equal annual increments over two years      
Non-vested restricted stock unit activity      
Granted (in shares) 928,252us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= acxm_TimeBasedVestingOverTwoYearsMember
   
Restricted Stock Unit Activity - Other disclosures      
Award vesting period 2 years    
Restricted stock units | Vesting in one year      
Non-vested restricted stock unit activity      
Granted (in shares) 48,928us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= acxm_TimeBasedVestingInOneYearMember
   
Restricted Stock Unit Activity - Other disclosures      
Award vesting period 1 year    
Restricted stock units | Performance-based      
Non-vested restricted stock unit activity      
Outstanding at the beginning of the period (in shares) 1,066,828us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Granted (in shares) 259,167us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Vested (in shares) (523,378)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Forfeited or cancelled (in shares) (43,864)us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Outstanding at the end of the period (in shares) 758,753us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
  1,066,828us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
Non-vested restricted stock units, Weighted average fair value per share at grant date      
Outstanding at the beginning of the period (in dollars per share) $ 14.19us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Granted (in dollars per share) $ 18.98us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Vested (in dollars per share) $ 9.64us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Forfeited or cancelled (in dollars per share) $ 24.87us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Outstanding at the end of the period (in dollars per share) $ 18.57us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
  $ 14.19us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
Weighted-average remaining contractual term      
Weighted-average remaining contractual term at the beginning of the period 1 year 4 months 28 days   10 months 28 days
Weighted-average remaining contractual term at the end of the period 1 year 4 months 28 days   10 months 28 days
Restricted Stock Unit Activity - Other disclosures      
Aggregate fair value of restricted stock units granted 4.9acxm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodTotalFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Restricted stock units | Vesting based on total shareholder return | Minimum      
Restricted Stock Unit Activity - Other disclosures      
Performance share awards vested (as a percent) 0.00%acxm_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfEquityInstrumentOtherThanOptionsPercentageOfVesting
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
/ us-gaap_VestingAxis
= acxm_PerformanceSharesVestingTotalShareholderReturnMember
   
Restricted stock units | Vesting based on total shareholder return | Maximum      
Restricted Stock Unit Activity - Other disclosures      
Performance share awards vested (as a percent) 200.00%acxm_ShareBasedCompensationArrangementByShareBasedPaymentAwardPercentageOfEquityInstrumentOtherThanOptionsPercentageOfVesting
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
/ us-gaap_VestingAxis
= acxm_PerformanceSharesVestingTotalShareholderReturnMember
   
Stock options      
Share-based compensation      
Share-based compensation expense 7.0us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
1.7us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
 
Future share-based compensation expense expected 23.7us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockOptionMember
   
Period for recognition of unrecognized stock-based compensation expense 4 years    
Restricted Stock Unit Activity - Other disclosures      
Pricing model used for share-based compensation arrangement binomial lattice    
Stock Appreciation Rights (SARs) | Performance-based      
Share-based compensation      
Share-based compensation expense 0.1us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Future share-based compensation expense expected 0.4us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Period for recognition of unrecognized stock-based compensation expense 3 years    
Non-vested restricted stock unit activity      
Granted (in shares) 245,404us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Non-vested restricted stock units, Weighted average fair value per share at grant date      
Granted (in dollars per share) $ 40.00us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Restricted Stock Unit Activity - Other disclosures      
Aggregate fair value of restricted stock units granted 0.5acxm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodTotalFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Exercise price $ 40acxm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedExcercisePrice
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Price (in dollars per share) $ 70us-gaap_SharePrice
/ us-gaap_AwardTypeAxis
= us-gaap_StockAppreciationRightsSARSMember
/ us-gaap_VestingAxis
= us-gaap_PerformanceSharesMember
   
Consecutive trading days during the performance period 20 days    
LiveRamp Inc      
Restricted Stock Unit Activity - Other disclosures      
Aggregate fair value of restricted stock units granted $ 23.7acxm_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodTotalFairValue
/ us-gaap_BusinessAcquisitionAxis
= acxm_LiverampIncMember
   
LiveRamp Inc | Restricted stock units | Time-vesting      
Non-vested restricted stock unit activity      
Granted (in shares) 1,075,392us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_BusinessAcquisitionAxis
= acxm_LiverampIncMember
/ us-gaap_VestingAxis
= acxm_TimeBasedVestingMember
   
LiveRamp Inc | Stock options      
Restricted Stock Unit Activity - Other disclosures      
Pricing model used for share-based compensation arrangement binomial lattice