Nature of Business - Sale of Stock (Details) - Follow-on public offering $ / shares in Units, $ in Millions	Jan. 27, 2020 USD ($) $ / shares shares
Nature of Business
Stock sold (in shares) | shares	4,710,144
Share price (in dollars per share) | $ / shares	$ 69.00
Proceeds from issuance of common stock, net of underwriting discounts and commissions and estimated offering expenses | $	$ 308.4