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Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Jun. 30, 2020 | Mar. 31, 2020 | Feb. 29, 2020
Stockholders Equity Disclosure [Line Items] |  |  |  |
Net proceeds from sale of common stock after deducting underwriting commissions and offering expenses | $ 49.3 |  |  |
Underwriting discounts, commissions and offering expenses payable | $ 3.6 |  |  |
Common Stock |  |  |  |
Stockholders Equity Disclosure [Line Items] |  |  |  |
Issuance of common stock for public offering, net of issuance costs of $2,514 and $3,536, shares | 9,185,000 | 4,615,384 | 5,307,692 |
Common stock price, per share |  |  |  | $ 5.75
Common Stock | Underwriters' Overallotment Option |  |  |  |
Stockholders Equity Disclosure [Line Items] |  |  |  |
Issuance of common stock for public offering, net of issuance costs of $2,514 and $3,536, shares | 485,000 |  |  |

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