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Stockholders' Equity - Narrative (Details) - Common Stock - USD ($) $ / shares in Units, $ in Millions |  | 3 Months Ended
--- | --- | ---
Sep. 23, 2019 | Sep. 30, 2019
Class of Stock [Line Items] |  |
Stock issued upon conversion of redeemable convertible preferred shares (in shares) |  | 7,816,643
IPO |  |
Class of Stock [Line Items] |  |
Initial public offering (in shares) | 4,140,000 |
Shares issued in public offering, price per share (in dollars per share) | $ 14.00 |
Sale of Stock, Consideration Received on Transaction | $ 50.4 |
Estimated offering expenses for aggregate expenses | $ 7.5 |
Stock issued upon conversion of redeemable convertible preferred shares (in shares) | 7,816,643 |
Over-Allotment Option |  |
Class of Stock [Line Items] |  |
Initial public offering (in shares) | 540,000 |

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