Quarterly report pursuant to Section 13 or 15(d)

Business Acquisitions (Details Textual)

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Business Acquisitions (Details Textual) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended 9 Months Ended 3 Months Ended 6 Months Ended 9 Months Ended 3 Months Ended 5 Months Ended 9 Months Ended
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Apr. 05, 2012
Bank
Sep. 30, 2012
Fund Quest [Member]
Dec. 13, 2011
Fund Quest [Member]
Sep. 30, 2012
Prima Capital Holding, Inc. [Member]
Sep. 30, 2012
Prima Capital Holding, Inc. [Member]
Sep. 30, 2012
Prima Capital Holding, Inc. [Member]
Apr. 05, 2012
Prima Capital Holding, Inc. [Member]
Sep. 30, 2012
Tamarac, Inc. [Member]
Sep. 30, 2012
Tamarac, Inc. [Member]
Sep. 30, 2012
Tamarac, Inc. [Member]
May 01, 2012
Tamarac, Inc. [Member]
Sep. 30, 2012
Tamarac, Inc. [Member]
Maximum [Member]
Sep. 30, 2012
Tamarac, Inc. [Member]
Minimum [Member]
Business Acquisitions (Textual) [Abstract]                                      
Acquisition date               Dec. 13, 2011       Apr. 05, 2012       May 01, 2012      
Total consideration of acquisition                 $ 27,796       $ 13,925       $ 48,427    
Acquisition related costs 216       2,097                            
Revenue                   1,250 2,399     3,790 5,574        
Net income 551     1,925 623 5,776       (142) (472)     (272) (861)        
Acquired intangible asset amortization                   340 665     489 815        
Unvested common stock grant                           559,551 559,551 559,551      
Granted to certain Tamarac employees stock options to acquire Envestnet common stock                               232,150      
Stock options to acquire Envestnet common stock at an exercise price   $ 12.55 $ 12.45                         $ 12.51      
Merger agreement Percentage                                   100.00% 50.00%
Aggregate proceeds of the Tamarac change of control payment                           $ 2,759 $ 2,759 $ 2,759      
Purchase registered shares of Envestnet common stock 232,150       232,150                 232,150 232,150 232,150      
Purchase registered shares of Envestnet common stock Percentage                           95.00% 95.00% 95.00%      
Service period for unvested common stock         2 years                            
Number of domestic top banks             20                        
Number of banks included in clintele of acquired company             7