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STOCKHOLDERS' EQUITY - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands, shares in Millions
1 Months Ended 3 Months Ended
Apr. 30, 2019
Mar. 31, 2020
Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Proceeds from exercise of stock options and restricted stock units $ 136,300 $ 820 $ 481
Common Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Issuance of common stock under public offering, net of issuance costs (in shares) 12.7    
Public offering price of common stock issued (in USD per share) $ 11.50