Quarterly report pursuant to Section 13 or 15(d)

Subsequent Event - Additional Information (Detail)

v3.10.0.1
Subsequent Event - Additional Information (Detail) - Subsequent Event - President And Chief Executive Officer
Aug. 07, 2018
USD ($)
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Subsequent Event [Line Items]  
Annual base salary $ 400,000
Minimum non-discretionary performance bonus $ 100,000
Maximum  
Subsequent Event [Line Items]  
Percentage of annual performance bonus 100.00%
Performance bonus based on target performance $ 170,000
Performance bonus based on outperform performance $ 210,000
Time-based RSUs | Tranche 1  
Subsequent Event [Line Items]  
Share based compensation arrangement by share based payment award equity instruments other than options to be granted upon approval by stockholders for an increase in number of shares available under 2018 long-term incentive plan | shares 350,000
Vesting percentage 0.25%
Restricted stock units vesting description (i) 350,000 stock-settled time-based restricted stock units which shall vest as to one-fourth of the number of shares of Common Stock subject to the time-based restricted stock units on the one-year anniversary of the Mr. Norbe’s first date of employment.
Time-based RSUs | Tranche 2  
Subsequent Event [Line Items]  
Vesting percentage 0.75%
Restricted stock units vesting description Remaining three-fourths of the number of shares of Common Stock subject to the time-based restricted stock units, in four installments on a semi-annual basis commencing on the 18-month anniversary of Mr. Norbe’s first date of employment, subject to continued employment through each such vesting date.
Performance-based RSUs  
Subsequent Event [Line Items]  
Share based compensation arrangement by share based payment award equity instruments other than options to be granted upon approval by stockholders for an increase in number of shares available under 2018 long-term incentive plan | shares 300,000
Vesting percentage 0.33%
Restricted stock units vesting description (ii) 300,000 stock settled performance-based RSUs, which shall vest in one-third annual increments, subject to performance criteria established by the Compensation Committee of the Board and continued employment through each such vesting date.