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Business - Additional Information (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2018 | Dec. 31, 2019 | Dec. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |
Entity information, date to change former legal or registered name |  | Jun. 21, 2018 |
Net proceeds from issuance of common stock after deducting underwriting discounts and commissions and offering costs |  |  | $ 78,334,457
Common Stock |  |  |
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |
Common stock, shares issued |  |  | 5,980,000
IPO |  |  |
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |
Net proceeds from issuance of common stock after deducting underwriting discounts and commissions and offering costs | $ 77,500,000 |  |
Underwriting discounts and commissions and offering costs | $ 12,200,000 |  |
IPO | Common Stock |  |  |
Organization Consolidation And Presentation Of Financial Statements [Line Items] |  |  |
Common stock, shares issued | 5,980,000 |  |
Common stock, issue price per share | $ 15.00 |  |

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