Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Detail)

v3.8.0.1
Commitments and Contingencies - Additional Information (Detail) - Chad Steelberg [Member] - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
Mar. 31, 2017
Mar. 31, 2018
Other Commitments [Line Items]    
Estimated common stock calculated value $ 125  
Annual salary under agreement   $ 250