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ACCOUNTING POLICIES (Details 3) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2013
Dec. 31, 2012
Mar. 31, 2012
Depreciation and amortization          
Total depreciation and amortization, including internal-use software and website development $ 3,863,000 $ 4,034,000 $ 15,838,000   $ 16,385,000
Additional Disclosure          
Impairments of long-lived assets 0     0  
Impairments of goodwill 0     0  
Goodwill          
Goodwill 2,784,000   2,784,000 2,784,000  
Cost of goods sold - direct
         
Depreciation and amortization          
Total depreciation and amortization, including internal-use software and website development 104,000 108,000      
Technology
         
Depreciation and amortization          
Total depreciation and amortization, including internal-use software and website development 3,416,000 3,598,000      
General and administrative
         
Depreciation and amortization          
Total depreciation and amortization, including internal-use software and website development 343,000 328,000      
Computer software | Minimum
         
Fixed assets          
Life 2 years        
Computer software | Maximum
         
Fixed assets          
Life 4 years        
Computer hardware | Minimum
         
Fixed assets          
Life 3 years        
Computer hardware | Maximum
         
Fixed assets          
Life 4 years        
Furniture and equipment | Minimum
         
Fixed assets          
Life 3 years        
Furniture and equipment | Maximum
         
Fixed assets          
Life 5 years        
Internal-use software and website development
         
Additional Disclosure          
Capitalized costs 3,000,000 1,500,000      
Amortization of capitalized costs $ 1,700,000 $ 2,200,000      
Internal-use software and website development | Minimum
         
Fixed assets          
Life 2 years        
Internal-use software and website development | Maximum
         
Fixed assets          
Life 3 years