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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 |  |

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