Stockholders' equity - Underwritten public offering and Registered direct offering (Details) - American Depository Shares (ADSs) - USD ($) $ in Millions |
Jun. 04, 2020 |
Jan. 24, 2020 |
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| Stockholders' equity | ||
| Issuance of common stock (in shares) | 3,075,000 | 21,000,000 |
| Net proceeds | $ 243.8 | $ 90.5 |
| Underwritten public offering | ||
| Stockholders' equity | ||
| Issuance of common stock (in shares) | 23,575,000 | |
| Over-Allotment Option | ||
| Stockholders' equity | ||
| Issuance of common stock (in shares) | 3,150,000 |
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- Definition The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Number of new stock issued during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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