Annual report pursuant to Section 13 and 15(d)

Acquisitions - 2014 Acquisitions (Details)

v3.6.0.2
Acquisitions - 2014 Acquisitions (Details) - USD ($)
1 Months Ended 12 Months Ended
Jun. 30, 2014
May 31, 2014
Mar. 31, 2014
Jan. 31, 2014
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Business Acquisition [Line Items]              
Gain (loss) due to changes in contingent cash payments         $ (877,000) $ (3,268,000) $ 173,000
InstaManager              
Business Acquisition [Line Items]              
Purchase price       $ 9,200,000      
Cash paid       6,000,000      
Deferred cash payment amount       $ 1,000,000      
Length of time after acquisition date of deferred cash payment to be made       2 years      
Additional future cash payment amount       $ 7,000,000      
Deferred cash payment, fair value       800,000      
Liability for the estimated cash payment       $ 2,400,000      
InstaManager | Developed product technologies              
Business Acquisition [Line Items]              
Amortized useful life of acquired intangible assets       3 years      
InstaManager | Trade names              
Business Acquisition [Line Items]              
Amortized useful life of acquired intangible assets       0 years      
VMM              
Business Acquisition [Line Items]              
Purchase price     $ 1,200,000        
Cash paid     1,000,000        
Deferred cash payment amount     $ 200,000        
Length of time after acquisition date of deferred cash payment to be made     2 years        
Additional future cash payment amount     $ 2,000,000        
Deferred cash payment, fair value     200,000        
Liability for the estimated cash payment     $ 100,000        
VMM | Developed product technologies              
Business Acquisition [Line Items]              
Amortized useful life of acquired intangible assets     3 years        
VMM | Client relationships              
Business Acquisition [Line Items]              
Amortized useful life of acquired intangible assets     10 years        
Notivus              
Business Acquisition [Line Items]              
Purchase price   $ 4,400,000          
Cash paid   3,600,000          
Deferred cash payment amount   $ 800,000          
Length of time after acquisition date of deferred cash payment to be made   2 years          
Deferred cash payment, fair value   $ 800,000          
Notivus | Developed product technologies              
Business Acquisition [Line Items]              
Amortized useful life of acquired intangible assets   3 years          
Kigo, Inc              
Business Acquisition [Line Items]              
Purchase price $ 36,200,000            
Cash paid 30,700,000            
Deferred cash payment amount $ 5,500,000            
Length of time after acquisition date of deferred cash payment to be made 2 years 6 months            
Direct acquisition costs $ 500,000            
Kigo, Inc | LIBOR              
Business Acquisition [Line Items]              
Basis spread on variable rate 1.00%            
Kigo, Inc | Developed product technologies              
Business Acquisition [Line Items]              
Amortized useful life of acquired intangible assets 3 years            
Kigo, Inc | Client relationships              
Business Acquisition [Line Items]              
Amortized useful life of acquired intangible assets 10 years            
2014 Acquisitions              
Business Acquisition [Line Items]              
Liability for the estimated cash payment         0    
Aggregate deferred cash obligation         3,900,000 6,200,000  
Paid deferred cash obligations         $ 2,500,000 1,200,000  
Gain (loss) due to changes in contingent cash payments           1,800,000  
Paid contingent cash obligations           $ 500,000.0