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v3.22.1

Common and Preferred Stock - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2021 | Feb. 28, 2018 | Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021
Class of Stock [Line Items] |  |  |  |  |
Common stock, shares authorized |  |  | 400,000,000 |  | 400,000,000
Common stock, par value |  |  | $ 0.01 |  | $ 0.01
Undesignated preferred stock, shares authorized |  |  | 10,000,000 |  | 10,000,000
Undesignated preferred stock, par value |  |  | $ 0.01 |  | $ 0.01
Common stock, shares issued |  |  | 252,413,434 |  | 251,477,562
Common stock, shares outstanding |  |  | 252,413,434 |  | 251,477,562
Preferred stock, shares outstanding |  |  | 0 |  | 0
Debt issuance amount | $ 230,000 |  |  |  |
Proceeds from market price stock purchase plan |  |  | $ 684 | $ 0 |
Market price stock purchase plan |  |  | 252,176 |  |
Employee Stock |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Common stock available for issuance |  |  | 900,000 |  |
Convertible Promissory Note | Mann Group |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Conversion of notes accrued interest to common shares, value |  |  |  | 400 |
Debt issuance amount |  |  |  | $ 9,600 | $ 9,600
Conversion of notes to common shares, shares |  |  |  | 4,000,000 | 4,000,000
2024 Convertible Notes |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Debt issuance amount |  |  |  | $ 5,000 |
Conversion of notes to common shares, shares |  |  |  | 1,666,667 |
Common Stock |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Issuance of common stock under Employee Stock Purchase Plan (in shares) |  |  | 233,401 | 292,981 |
Controlled Equity Offering Sales Agreement | Cantor Fitzgerald |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Stock sales agreements date |  | Feb. 28, 2018 |  |  |
Controlled Equity Offering Sales Agreement | Cantor Fitzgerald | Common Stock | Maximum |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Amount of net proceeds from issuance of securities |  | $ 50,000 |  |  |
At Market Issuance Sales Agreement |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Sales under sales agreement |  |  | $ 0 |  |
At Market Issuance Sales Agreement | Cantor Fitzgerald | Common Stock |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Amount of net proceeds from issuance of securities |  |  |  | $ 1,900 |
Number of shares sold during the period |  |  |  | 578,063 |
At Market Issuance Sales Agreement | Cantor Fitzgerald | Common Stock | Weighted Average |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Exchange price per share | $ 3.26 |  |  | $ 3.26 |

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