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CAPITAL STOCK, Employee Stock Purchase Plan (Details) (USD $)
3 Months Ended 4 Months Ended 12 Months Ended
Jan. 31, 2015
Apr. 30, 2008
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Employee Stock Purchase Plan [Abstract]          
Employee purchase price, percent of market value   85.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardDiscountFromMarketPriceOfferingDate      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent 10.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent        
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Amount $ 2,500us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeeAmount        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant     3,267,184us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant    
Employee Stock Purchase Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant     441,913us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
   
Weighted-average assumptions and fair value of shares issued under the ESPP          
Expected dividend yield (in hundredths)     0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
0.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
Risk-free interest rate (in hundredths)     0.09%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
0.09%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
0.08%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
Expected volatility (in hundredths)     35.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
51.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
51.50%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
Expected life (in years)     62 days 3 months 3 months
Weighted-average fair value of shares issued (in dollars per share)     $ 2.02avid_ShareBasedCompensationArrangementsWeightedAverageFairValueOfSharesIssuedPerShare
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
$ 1.00avid_ShareBasedCompensationArrangementsWeightedAverageFairValueOfSharesIssuedPerShare
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
$ 1.30avid_ShareBasedCompensationArrangementsWeightedAverageFairValueOfSharesIssuedPerShare
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
Shares issued under the ESPP (in shares)     0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
27,936,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
142,658,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
Average price of shares issued (in dollars per share)     $ 0.00us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
$ 6.29us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
$ 6.96us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerShareWeightedAveragePriceOfSharesPurchased
/ us-gaap_AwardTypeAxis
= us-gaap_EmployeeStockMember
Maximum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent 15.00%us-gaap_DefinedContributionPlanMaximumAnnualContributionsPerEmployeePercent
/ us-gaap_RangeAxis
= us-gaap_MaximumMember