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Borrowings - Components of Borrowings (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Aug. 16, 2022
Debt Instrument [Line Items] |  |  |  |
Interest Expense, Debt | $ 9,300 | $ 10,300 | $ 10,300 |
Outstanding Balance | 200,000 | 200,000 |  |
Other Deferred Costs, Net | (950) | (556) |  |
Senior notes | Series C |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Outstanding Balance | $ 0 |  |  | $ 90,000
Interest Rate Per Annum | 5.82% |  |  |
Senior notes | Series D |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Outstanding Balance | $ 60,000 | 60,000 |  |
Interest Rate Per Annum | 4.29% |  |  |
Senior notes | Series E Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Outstanding Balance | $ 50,000 | 50,000 |  |
Interest Rate Per Annum | 4.53% |  |  |
Senior notes | Series F Senior Notes |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Outstanding Balance | $ 90,000 | 0 |  |
Interest Rate Per Annum | 3.10% |  |  |
Revolving credit agreement |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Outstanding Balance | $ 0 | $ 0 |  |

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