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Significant Accounting Policies (Details) $ in Thousands |  |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Sep. 25, 2019 USD ($) shares | Sep. 17, 2019 shares | Sep. 30, 2019 shares | Sep. 30, 2020 segment | Sep. 30, 2019 USD ($) shares
Significant Accounting Policies |  |  |  |  |
Number of operating segments | segment |  |  |  | 4 |
Shares sold | shares |  |  | 3,289,000 |  | 3,289,000
Aggregate offering price | $ 69,100 |  |  |  |
Underwriting Discounts | 4,700 |  |  |  |
Offering cost | 1,600 |  |  |  |
Net proceeds | $ 62,800 |  |  |  | $ 62,804
IPO |  |  |  |  |
Significant Accounting Policies |  |  |  |  |
Shares sold | shares |  | 2,860,000 |  |  |
Underwriter |  |  |  |  |
Significant Accounting Policies |  |  |  |  |
Shares sold | shares | 429,000 |  |  |  |

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