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Investments - Additional Information (Detail) - USD ($)
1 Months Ended 12 Months Ended
May 31, 2014
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Apr. 08, 2016
Mar. 03, 2016
Schedule of Investments [Line Items]              
Investments   $ 15,000,000 $ 15,000,000        
Impairment on the remaining investment   $ 0          
Voting interest   20.00%          
Loss of unconsolidated entities   $ 0 $ 267,000 $ (110,000)      
Proportionate share exceed of the company's consolidated assets or income   10.00%          
Web and Money Management Solution              
Schedule of Investments [Line Items]              
Interest note receivable             $ 600,000
Impairment on the remaining investment       $ 600,000      
Fortifico Limited              
Schedule of Investments [Line Items]              
Impairment on the remaining investment         $ 4,700,000    
Investments           $ 5,000,000.0  
Ownership interest         33.00% 33.00%  
Minimum              
Schedule of Investments [Line Items]              
Voting interest   20.00%          
Minimum | WZ UK Ltd.              
Schedule of Investments [Line Items]              
Proportionate share of company's income from continuing operations   20.00%          
Maximum              
Schedule of Investments [Line Items]              
Voting interest   50.00%          
Automattic              
Schedule of Investments [Line Items]              
Investment made on asset $ 15,000,000.0            
Percentage of outstanding shares invested 5.00%