ACQUISITION (Details) (USD $)
3 Months Ended9 Months Ended3 Months Ended9 Months Ended3 Months Ended9 Months Ended3 Months Ended9 Months Ended3 Months Ended9 Months Ended3 Months Ended9 Months Ended3 Months Ended9 Months Ended12 Months Ended9 Months Ended9 Months Ended9 Months Ended9 Months Ended1 Months Ended3 Months Ended9 Months Ended9 Months Ended9 Months Ended9 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
year
business
Sep. 30, 2010
Sep. 30, 2011
MIJO Corporation ("MIJO")
Sep. 30, 2011
MIJO Corporation ("MIJO")
Sep. 01, 2011
MIJO Corporation ("MIJO")
Apr. 02, 2011
MIJO Corporation ("MIJO")
Sep. 30, 2011
MIJO Corporation ("MIJO")
Customer relationships
Sep. 30, 2011
MIJO Corporation ("MIJO")
Customer relationships
year
Apr. 02, 2011
MIJO Corporation ("MIJO")
Customer relationships
Sep. 30, 2011
MIJO Corporation ("MIJO")
Trade name
Sep. 30, 2011
MIJO Corporation ("MIJO")
Trade name
year
Apr. 02, 2011
MIJO Corporation ("MIJO")
Trade name
Sep. 30, 2011
MIJO Corporation ("MIJO")
Developed technology
Sep. 30, 2011
MIJO Corporation ("MIJO")
Developed technology
year
Apr. 02, 2011
MIJO Corporation ("MIJO")
Developed technology
Sep. 30, 2011
MIJO Corporation ("MIJO")
Noncompetition agreements
Sep. 30, 2011
MIJO Corporation ("MIJO")
Noncompetition agreements
year
Apr. 02, 2011
MIJO Corporation ("MIJO")
Noncompetition agreements
Sep. 30, 2011
MediaMind Technologies ("Mediamind")
Sep. 30, 2011
MediaMind Technologies ("Mediamind")
Dec. 31, 2010
MediaMind Technologies ("Mediamind")
Sep. 01, 2011
MediaMind Technologies ("Mediamind")
Jul. 26, 2011
MediaMind Technologies ("Mediamind")
Sep. 30, 2011
MediaMind Technologies ("Mediamind")
Customer relationships
year
Jul. 26, 2011
MediaMind Technologies ("Mediamind")
Customer relationships
Sep. 30, 2011
MediaMind Technologies ("Mediamind")
Trade name
year
Jul. 26, 2011
MediaMind Technologies ("Mediamind")
Trade name
Sep. 30, 2011
MediaMind Technologies ("Mediamind")
Developed technology
year
Jul. 26, 2011
MediaMind Technologies ("Mediamind")
Developed technology
Sep. 30, 2011
MediaMind Technologies ("Mediamind")
Noncompetition agreements
year
Jul. 26, 2011
MediaMind Technologies ("Mediamind")
Noncompetition agreements
Jul. 26, 2011
MediaMind Technologies ("Mediamind")
Term Loans
Sep. 30, 2011
EyeWonder LLC and Chors GmbH ("EyeWonder")
customer
Sep. 30, 2011
EyeWonder LLC and Chors GmbH ("EyeWonder")
Sep. 30, 2011
EyeWonder LLC and Chors GmbH ("EyeWonder")
Sep. 01, 2011
EyeWonder LLC and Chors GmbH ("EyeWonder")
Sep. 30, 2011
EyeWonder LLC and Chors GmbH ("EyeWonder")
Customer relationships
year
Sep. 01, 2011
EyeWonder LLC and Chors GmbH ("EyeWonder")
Customer relationships
Sep. 30, 2011
EyeWonder LLC and Chors GmbH ("EyeWonder")
Trade name
year
Sep. 01, 2011
EyeWonder LLC and Chors GmbH ("EyeWonder")
Trade name
Sep. 30, 2011
EyeWonder LLC and Chors GmbH ("EyeWonder")
Developed technology
year
Sep. 01, 2011
EyeWonder LLC and Chors GmbH ("EyeWonder")
Developed technology
Sep. 30, 2011
EyeWonder LLC and Chors GmbH ("EyeWonder")
Noncompetition agreements
year
Sep. 01, 2011
EyeWonder LLC and Chors GmbH ("EyeWonder")
Noncompetition agreements
ACQUISITIONS                                              
Number of businesses acquired  3                                           
Acquisition                                              
Net assets acquired       $ 43,800,000                $ 499,300,000            $ 56,200,000        
Purchase consideration paid in cash       43,800,000                499,300,000            61,000,000        
Transaction cost    300,000               8,700,00011,500,000             1,800,000          
Increase (Decrease) in price allocated to finite-lived intangible assets        (700,000)  (1,100,000)  500,000  2,200,000                            
Increase (Decrease) in price allocated to goodwill    2,000,000                                         
Increase (Decrease) in price allocated to property, plant, and equipment    (2,800,000)                                         
Acquired intangible assets, weighted average term (in years)         15  10  6  5      9 6 5 5      8 5 5 3 
Revenue recognized    5,300,00010,600,000              16,300,00016,300,000             2,900,0002,900,000         
Recognized income before income tax    800,0001,800,000              4,900,0004,900,000             300,000300,000         
Preliminary net purchase price                                     56,200,000        
Contingent estimated refund of the purchase consideration                                     4,800,000        
Number of customers on which reduction of purchase price is based                                  2           
Gross receivables      4,700,000                34,400,000          10,100,00010,100,00010,100,000         
Estimated fair value of gross receivables      4,700,000                34,000,000          10,100,00010,100,00010,100,000         
Cash paid to holders of vested stock options                        71,400,000                     
Maximum borrowing capacity                                 490,000,000            
Percentage of revenues from customers outside United States (as a percent)                      72.00%                       
Purchase price allocation                                              
Current assets       5,100,000                142,300,000            13,400,000        
Property and equipment       4,000,000                9,100,000            1,600,000        
Other non-current assets                        16,200,000            1,600,000        
Amortizable intangible assets          7,800,000  1,800,000  2,600,000  4,600,000      154,000,000 15,000,000 20,000,000 11,000,000      17,300,000 1,700,000 600,000 4,500,000
Goodwill       19,500,000                220,900,000            28,900,000        
Total assets acquired       45,400,000                588,500,000            69,600,000        
Less deferred tax liabilities                        (60,000,000)                     
Less other liabilities assumed       (1,600,000)                (29,200,000)            (13,400,000)        
Net assets acquired       43,800,000                499,300,000            56,200,000        
As Reported Information                                              
Revenues84,594,00055,626,000215,956,000166,147,000                                          
Income (loss) from continuing operations(3,925,000)10,040,00019,461,00026,748,000                                          
Income per share - continuing operations: Basic (in dollars per share)$ (0.14)$ 0.35$ 0.70$ 0.99                                          
Income per share - continuing operations: Diluted (in dollars per share)$ (0.14)$ 0.35$ 0.70$ 0.97                                          
Pro Forma Information                                              
Revenue95,003,00091,881,000295,013,000274,310,000                                          
Income (loss) from continuing operations$ (9,629,000)$ 701,000$ (7,812,000)$ (565,000)                                          
Income (loss) per share - continuing operations: Basic (in dollars per share)$ (0.35)$ 0.02$ (0.28)$ (0.02)                                          
Income (loss) per share - continuing operations: Diluted (in dollars per share)$ (0.35)$ 0.02$ (0.28)$ (0.02)