Annual report pursuant to Section 13 and 15(d)

Acquisitions - 2015 Acquisitions (Details)

v3.6.0.2
Acquisitions - 2015 Acquisitions (Details) - USD ($)
1 Months Ended 12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 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
Goodwill         259,938,000 220,097,000 $ 193,378,000
Indatus              
Business Acquisition [Line Items]              
Purchase price   $ 49,400,000          
Cash paid   43,800,000          
Deferred cash payment amount   $ 5,000,000          
Length of time after acquisition date of deferred cash payment to be made   19 months          
Liability for the estimated cash payment   $ 2,000,000          
Contingent cash holdback period   12 months          
Deferred cash payment, fair value   $ 4,700,000          
Fair value of contingent cash obligation   900,000          
Direct acquisition costs   300,000          
Paid contingent cash obligations $ 0            
Goodwill   25,575,000          
VRX              
Business Acquisition [Line Items]              
Purchase price   2,000,000          
Cash paid   $ 1,500,000          
Length of time after acquisition date of deferred cash payment to be made   15 months          
Liability for the estimated cash payment   $ 3,000,000          
Fair value of contingent cash obligation   500,000          
Deferred cash obligation   500,000          
Goodwill   $ 1,186,000          
2015 Acquisitions              
Business Acquisition [Line Items]              
Deferred cash payment amount         2,400,000    
Liability for the estimated cash payment         0 800,000  
Aggregate deferred cash obligation         2,500,000 5,100,000  
Deferred cash obligation discount         (100,000) (200,000)  
Gain (loss) due to changes in contingent cash payments         $ 800,000 600,000  
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      
Liability for the estimated cash payment       $ 2,400,000      
Deferred cash payment, fair value       $ 800,000      
Goodwill           4,135,000  
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        
Goodwill           $ 32,996,000  
Developed product technologies | Indatus              
Business Acquisition [Line Items]              
Amortized useful life of acquired intangible assets   3 years          
Developed product technologies | VRX              
Business Acquisition [Line Items]              
Amortized useful life of acquired intangible assets         3 years    
Developed product technologies | InstaManager              
Business Acquisition [Line Items]              
Amortized useful life of acquired intangible assets       3 years      
Developed product technologies | Kigo, Inc              
Business Acquisition [Line Items]              
Amortized useful life of acquired intangible assets     3 years        
Trade names | Indatus              
Business Acquisition [Line Items]              
Amortized useful life of acquired intangible assets   1 year          
Trade names | InstaManager              
Business Acquisition [Line Items]              
Amortized useful life of acquired intangible assets       0 years      
Client relationships | Indatus              
Business Acquisition [Line Items]              
Amortized useful life of acquired intangible assets   10 years          
Client relationships | Kigo, Inc              
Business Acquisition [Line Items]              
Amortized useful life of acquired intangible assets     10 years        
Maximum | VRX              
Business Acquisition [Line Items]              
Liability for the estimated cash payment         $ 1,500,000