Annual report pursuant to Section 13 and 15(d)

Business Acquisitions (Summary of Intangible Assets Acquired) (Details)

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Business Acquisitions (Summary of Intangible Assets Acquired) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 02, 2018
Oct. 03, 2016
Feb. 01, 2016
Dec. 31, 2018
FinaConnect, Inc.        
Business Acquisition [Line Items]        
Intangible assets acquired, Amount     $ 3,800  
Wheelhouse Analytics, LLC        
Business Acquisition [Line Items]        
Intangible assets acquired, Amount   $ 6,600    
FolioDynamix        
Business Acquisition [Line Items]        
Intangible assets acquired, Amount       $ 135,700
Customer lists | FinaConnect, Inc.        
Business Acquisition [Line Items]        
Intangible assets acquired, Amount     $ 2,800  
Intangible assets acquired, Useful Life In Years     12 years  
Customer lists | Wheelhouse Analytics, LLC        
Business Acquisition [Line Items]        
Intangible assets acquired, Amount   $ 4,000    
Intangible assets acquired, Useful Life In Years   15 years    
Customer lists | FolioDynamix        
Business Acquisition [Line Items]        
Intangible assets acquired, Amount       113,500
Intangible assets acquired, Useful Life In Years 13 years      
Proprietary technologies | FinaConnect, Inc.        
Business Acquisition [Line Items]        
Intangible assets acquired, Amount     $ 900  
Intangible assets acquired, Useful Life In Years     5 years  
Proprietary technologies | Wheelhouse Analytics, LLC        
Business Acquisition [Line Items]        
Intangible assets acquired, Amount   $ 2,500    
Intangible assets acquired, Useful Life In Years   6 years    
Proprietary technologies | FolioDynamix        
Business Acquisition [Line Items]        
Intangible assets acquired, Amount       17,500
Intangible assets acquired, Useful Life In Years 5 years      
Trade names | FinaConnect, Inc.        
Business Acquisition [Line Items]        
Intangible assets acquired, Amount     $ 100  
Intangible assets acquired, Useful Life In Years     2 years  
Trade names | Wheelhouse Analytics, LLC        
Business Acquisition [Line Items]        
Intangible assets acquired, Amount   $ 100    
Intangible assets acquired, Useful Life In Years   2 years    
Trade names | FolioDynamix        
Business Acquisition [Line Items]        
Intangible assets acquired, Amount       4,700
Intangible assets acquired, Useful Life In Years 6 years      
Scenario, Previously Reported        
Business Acquisition [Line Items]        
Intangible assets acquired, Amount $ 117,700      
Scenario, Previously Reported | Customer lists        
Business Acquisition [Line Items]        
Intangible assets acquired, Amount 95,000      
Scenario, Previously Reported | Proprietary technologies        
Business Acquisition [Line Items]        
Intangible assets acquired, Amount 18,000      
Scenario, Previously Reported | Trade names        
Business Acquisition [Line Items]        
Intangible assets acquired, Amount $ 4,700      
Scenario, Adjustment        
Business Acquisition [Line Items]        
Intangible assets acquired, Amount       18,000
Scenario, Adjustment | Customer lists        
Business Acquisition [Line Items]        
Intangible assets acquired, Amount       18,500
Scenario, Adjustment | Proprietary technologies        
Business Acquisition [Line Items]        
Intangible assets acquired, Amount       (500)
Scenario, Adjustment | Trade names        
Business Acquisition [Line Items]        
Intangible assets acquired, Amount       $ 0