XML 93 R59.htm IDEA: XBRL DOCUMENT v3.8.0.1
Investment, Carried at Cost - Additional Information (Detail) - USD ($)
12 Months Ended
Dec. 29, 2017
Jun. 20, 2017
Dec. 31, 2017
Dec. 31, 2016
Apr. 27, 2017
Nov. 18, 2016
Schedule of Cost-method Investments [Line Items]            
Cost method investments     $ 35,187,000 $ 20,000,000    
Equity Option [Member]            
Schedule of Cost-method Investments [Line Items]            
Impairment losses     $ 0      
Option expiration period Jan. 15, 2019          
Weighted average cost of capital percentage 27.00%          
Option volatility rate 40.00%          
AdvisorEngine [Member]            
Schedule of Cost-method Investments [Line Items]            
Date of agreement     Nov. 18, 2016      
Cost method investments           $ 20,000,000
Ownership interest percentage     47.00%      
Original fully diluted ownership interest percentage     41.00%      
Impairment losses     $ 0 0    
Aggregate commitment amount $ 30,000,000          
AdvisorEngine [Member] | Equity Option [Member]            
Schedule of Cost-method Investments [Line Items]            
Cost method investments     3,278,000      
Aggregate commitment amount 30,000,000          
Fair value of option $ 3,278,000   3,278,000      
AdvisorEngine [Member] | Convertible Preferred Stock [Member]            
Schedule of Cost-method Investments [Line Items]            
Cost method investments     $ 25,000,000 $ 20,000,000    
AdvisorEngine [Member] | Convertible Preferred Stock [Member] | Series A Preferred Stock [Member]            
Schedule of Cost-method Investments [Line Items]            
Number of shares purchased     11,811,856      
Non-cumulative dividend     6.00%      
AdvisorEngine [Member] | Convertible Preferred Stock [Member] | Series A- One Convertible Preferred Stock [Member]            
Schedule of Cost-method Investments [Line Items]            
Cost method investments         $ 5,000,000  
Number of shares purchased         2,646,062  
Thesys Group, Inc [Member]            
Schedule of Cost-method Investments [Line Items]            
Cost method investments     $ 6,909,000      
Thesys Group, Inc [Member] | Convertible Preferred Stock [Member] | Series Y Preferred Stock [Member]            
Schedule of Cost-method Investments [Line Items]            
Original fully diluted ownership interest percentage   19.99%        
Fair value of option   $ 6,909,000        
Number of shares issued   7,797,533        
Current fully diluted ownership percentage   18.90%        
Liquidation preference   $ 0.231        
Thesys Group, Inc [Member] | Warrant [Member]            
Schedule of Cost-method Investments [Line Items]            
Warrant exercisable term   5 years        
Qualified financing determined term   2 years        
Thesys Group, Inc [Member] | Warrant [Member] | Series Y Preferred Stock [Member]            
Schedule of Cost-method Investments [Line Items]            
Warrants to purchase shares   3,898,766        
Exercisable percentage of warrant if claim brought against Company   100.00%