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Stockholders' equity - Recent Issuances (Details) - February 2020 Public Offering $ in Millions	Feb. 12, 2020 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Proceeds from common shares offering | $	$ 14.5
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Issued (in shares) | shares	10,350,000

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The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

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