Consolidated Balance Sheets (Parenthetical) - $ / shares |
Dec. 31, 2020 |
Jun. 10, 2020 |
Dec. 31, 2019 |
May 30, 2018 |
Mar. 13, 2018 |
Mar. 12, 2018 |
Feb. 16, 2018 |
May 18, 2017 |
Nov. 18, 2015 |
Oct. 14, 2015 |
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| Statement Of Financial Position [Abstract] | ||||||||||
| Undesignated preferred shares, par value | $ 0.01 | $ 0.01 | ||||||||
| Undesignated preferred shares, authorized | 100,000,000 | 100,000,000 | ||||||||
| Undesignated preferred shares issued | 0 | 0 | ||||||||
| Ordinary shares, par value | $ 0.01 | $ 0.01 | $ 0.01 | $ 0.001 | $ 0.0001 | $ 0.01 | $ 0.01 | $ 0.01 | $ 0.01 | |
| Ordinary shares, shares authorized | 150,000,000 | 100,000,000 | 50,000,000 | 50,000,000 | 44,557,606 | 44,557,606 | 7,956,715 | 3,659,453 | 413,110 | |
| Ordinary shares, shares issued | 49,431,028 | 14,868,973 | 413,110 | 413,110 |
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- Definition Face amount or stated value per share of common stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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