Acquisitions - Additional Information (Detail) - USD ($)
1 Months Ended 9 Months Ended
May 31, 2017
Nov. 30, 2016
Aug. 31, 2015
Sep. 30, 2017
Mar. 31, 2017
Feb. 19, 2016
TZ Holdings, Inc [Member]            
Business Acquisition [Line Items]            
Cash consideration     $ 17,300,000      
Business acquisition hold back, value     800,000      
Held back warrants expiration date       Sep. 14, 2018    
Maximum contingent cash consideration     $ 2,000,000      
Contingent consideration at fair value       $ 1,600,000    
Contingent consideration paid $ 700,000 $ 900,000        
Technorati [Member]            
Business Acquisition [Line Items]            
Cash withheld to secure indemnification obligations           $ 500,000
Approximately owed, post closing working capital adjustments         $ 100,000  
Common Stock [Member] | TZ Holdings, Inc [Member]            
Business Acquisition [Line Items]            
Business acquisition equity Interest Issued, number of Shares     2,400,000      
Business acquisition equity Interest Issued, value     $ 3,200,000      
Number of shares held back     600,000      
Warrants [Member] | TZ Holdings, Inc [Member]            
Business Acquisition [Line Items]            
Business acquisition equity Interest Issued, number of Shares     480,000      
Number of shares held back     120,000