Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Summary of Anti-dilutive Stock Based Compensation Awards (Detail)

v3.19.1
Summary of Significant Accounting Policies - Summary of Anti-dilutive Stock Based Compensation Awards (Detail) - shares
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Stock Options [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Anti-dilutive stock based compensation awards 19,300 9,623
Stock Warrants [Member]    
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]    
Anti-dilutive stock based compensation awards 2,754,287 120,000