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Investments - Additional Information (Detail) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 12 Months Ended
Jul. 27, 2016
May 31, 2014
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Apr. 08, 2016
Mar. 03, 2016
Jan. 06, 2016
Dec. 31, 2014
Aug. 31, 2014
Jan. 31, 2012
Schedule of Cost-method Investments [Line Items]                      
Investments     $ 15,857   $ 15,857            
Accounts payable     15,817   16,074            
Convertible promissory note purchased             $ 600        
Equity loss of unconsolidated entities, net of tax     $ 0 $ 683              
Proportionate share exceed of the company's consolidated assets or income     10.00%                
Bluezone Labs, LLC                      
Schedule of Cost-method Investments [Line Items]                      
Amount of investment for acquisition                     $ 300
Ownership interest                     25.00%
Purchase of products and services     $ 500 $ 300              
Accounts payable     $ 200   $ 100            
WZ (UK) Ltd.                      
Schedule of Cost-method Investments [Line Items]                      
Amount of investment for acquisition                   $ 3,900  
Ownership interest                   49.00%  
Ownership interest               57.50%      
AppMachine                      
Schedule of Cost-method Investments [Line Items]                      
Amount of investment for acquisition                 $ 15,200    
Ownership interest                 40.00%    
Remaining percentage of acquisition 60.00%                    
Fortifico Limited                      
Schedule of Cost-method Investments [Line Items]                      
Amount of investment for acquisition           $ 5,000          
Ownership interest         33.00% 33.00%          
Impairment charges on remaining investments         $ 4,700            
Minimum                      
Schedule of Cost-method Investments [Line Items]                      
Voting interest     20.00%                
Maximum                      
Schedule of Cost-method Investments [Line Items]                      
Voting interest     50.00%                
Automattic                      
Schedule of Cost-method Investments [Line Items]                      
Investment made on asset   $ 15,000                  
Percentage of outstanding shares invested   5.00%