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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Allowance for Sales Returns and Exchanges (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Allowance for sales returns and exchanges - beginning of year $ 9,510avid_AllowanceForSalesReturnsAndRebates $ 12,519avid_AllowanceForSalesReturnsAndRebates $ 19,460avid_AllowanceForSalesReturnsAndRebates $ 22,767avid_AllowanceForSalesReturnsAndRebates
Additions to the allowance 9,260avid_AdditionstotheAllowanceforSalesReturnsandRebates 9,243avid_AdditionstotheAllowanceforSalesReturnsandRebates 11,402avid_AdditionstotheAllowanceforSalesReturnsandRebates  
Deductions against the allowance (12,269)avid_DeductionstotheAllowanceforSalesReturnsandRebates (16,184)avid_DeductionstotheAllowanceforSalesReturnsandRebates (14,709)avid_DeductionstotheAllowanceforSalesReturnsandRebates  
Sales Returns and Allowances [Member]        
Allowance for sales returns and exchanges - beginning of year $ 3,700avid_AllowanceForSalesReturnsAndRebates
/ us-gaap_DeferredRevenueArrangementTypeAxis
= us-gaap_SalesReturnsAndAllowancesMember		 $ 6,100avid_AllowanceForSalesReturnsAndRebates
/ us-gaap_DeferredRevenueArrangementTypeAxis
= us-gaap_SalesReturnsAndAllowancesMember		 $ 8,700avid_AllowanceForSalesReturnsAndRebates
/ us-gaap_DeferredRevenueArrangementTypeAxis
= us-gaap_SalesReturnsAndAllowancesMember