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Net Income Per Share - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Nov. 02, 2016 | Jun. 30, 2016 | May 01, 2013 | Apr. 30, 2013
Schedule Of Earnings Per Share [Line Items] |  |  |  |  |  |  |
Common Stock, Shares, Outstanding | 46,304,139 |  |  |  |  |  |
Class of Warrant or Right, Outstanding | 4,877,617 |  |  |  |  |  |
Number of new common stock issued | 46,477,068 | 45,865,081 |  |  |  |  |
Common Stock, Par or Stated Value Per Share |  |  |  |  |  |  | $ 0.01
Exercise price of common stock |  |  |  |  |  | $ 16.67 |
Warrant exercised | 132 | 34 | 0 |  |  |  |
Stock Issued During Period, Shares, New Issues | 4 | 8 | 0 |  |  |  |
First Warrant Buyback Authorization Dollars |  |  |  |  | $ 10 |  |
SecondWarrantBuyBackAuthorizedDollars |  |  |  | $ 10 |  |  |
RemainingWarrantBuyBackAuthorizedDollars | $ 12 |  |  |  |  |  |
Net Income (Loss) Available to Common Stockholders, Basic | $ (28) | $ (437) | $ (216) |  |  |  |
Common Stock [Member] |  |  |  |  |  |  |
Schedule Of Earnings Per Share [Line Items] |  |  |  |  |  |  |
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture | 495,000 |  |  |  |  |  |

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