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Acquisitions - Summary of Consideration for Acquisition (Detail)
$ in Thousands
1 Months Ended
Nov. 30, 2018
USD ($)
Telmetrics Acquisition  
Business Acquisition [Line Items]  
Cash $ 10,100
Future consideration 1,600
Total 11,700
Callcap Acquisition  
Business Acquisition [Line Items]  
Cash 24,993
Fair value of equity consideration 10,017
Total $ 35,010