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v3.21.2

Borrowings - Senior Convertible Notes - Additional Information (Detail) |  | 9 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 04, 2021 USD ($) d $ / shares | Sep. 30, 2021 USD ($) d $ / shares | Mar. 15, 2021 USD ($) | Dec. 31, 2020 $ / shares
Debt Instrument [Line Items] |  |  |  |
Principal amount |  | $ 288,400,000 |  |
Common stock, par value | $ / shares |  | $ 0.01 |  | $ 0.01
Proceeds from offering after deducting initial purchasers discounts and commissions and estimated offering expenses payable |  | $ 230,000,000 |  |
Unamortized debt issuance cost |  | 6,420,000 |  |
Senior Convertible Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal amount |  | $ 230,000,000.0 |  |
Maturity date |  | Mar. 01, 2026 |  |
Annual interest rate |  | 2.50% |  |
Common stock, par value | $ / shares |  | $ 0.01 |  |
Number of trading days | d | 20 | 20 |  |
Consecutive trading days | d | 30 | 30 |  |
Conversion price percentage | 130.00% | 130.00% |  |
Principal amount per share | $ / shares | $ 1,000 | $ 1,000 |  |
Measurement period percentage |  | 98.00% |  |
Conversion price | $ / shares | $ 5.21 | $ 5.21 |  |
Initial conversion price of premium percentage | 30.00% |  |  |
No of convertible shares | 191.8281 |  |  |
Redemption period start date | Mar. 06, 2024 |  |  |
Redemption price percentage | 100.00% |  |  |
Sinking fund | $ 0 |  |  |
Debt instrument redemption description |  | The Company may redeem for cash all or any portion of the Senior convertible notes, at its option, on or after March 6, 2024 and prior to the 36th scheduled trading day immediately preceding the maturity date, if the last reported sale price of Common Stock has been at least 130% of the conversion price for the Senior convertible notes then in effect for at least 20 trading days (whether or not consecutive) during any 30 consecutive trading day period (including the last trading day of such period) ending on, and including, the trading day immediately preceding the date on which the Company provides notice of redemption at a redemption price equal to 100% of the principal amount of the Senior convertible notes to be redeemed, plus accrued and unpaid interest to, but excluding, the redemption date. If the Company elects to redeem less than all of the outstanding Senior convertible notes, at least $75.0 million aggregate principal amount of Senior convertible notes must be outstanding and not subject to redemption as of the relevant redemption notice date. No sinking fund is provided for the Senior convertible notes. |  |
Percentage of repurchase price | 100.00% |  |  |
Debt default, description |  | If certain bankruptcy and insolvency-related events of default involving the Company (and not just any of its significant subsidiaries) occur, 100% of the principal of and accrued and unpaid interest on the Senior convertible notes will automatically become due and payable. If an event of default with respect to the Senior convertible notes, other than certain bankruptcy and insolvency-related events of default involving the Company (and not just any of its significant subsidiaries), occurs and is continuing, the trustee, by notice to the Company, or the holders of at least 25% in principal amount of the outstanding Senior convertible notes by notice to the Company and the trustee, may, and the trustee at the request of such holders shall, declare 100% of the principal of and accrued and unpaid interest, if any, on all the Senior convertible notes to be due and payable. Notwithstanding the foregoing, the Indenture provides that, to the extent the Company so elects, the sole remedy for an event of default relating to certain failures by the Company to comply with certain reporting covenants in the Indenture will, for the first 365 days after the occurrence of such an event of default consist exclusively of the right to receive additional interest on the Senior convertible notes as set forth in the Indenture |  |
Proceeds from offering after deducting initial purchasers discounts and commissions and estimated offering expenses payable | $ 222,700,000 |  |  |
Unamortized debt issuance cost |  | $ 6,400,000 |  |
Senior Convertible Notes | Minimum |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Outstanding principal amount redeemed | 75,000,000.0 |  |  |
Senior Convertible Notes | Private Placement |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal amount | $ 200,000,000.0 |  | $ 30,000,000.0 |

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