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v3.20.4

Investments - Narrative (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) number_of_securities | Dec. 31, 2019 USD ($) number_of_securities
Debt Securities, Available-for-sale [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | $ 882,682 | $ 1,115,323
Other investments | $ 48,764 | $ 38,044
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | number_of_securities | 30 | 73
Fair Value | $ 912,429 | $ 1,135,317
Gross Unrealized Gains | $ 30,104 | 21,548
Maximum percentage of shareholders' equity security holdings held of one issuer | 10.00% |
Available-for-sale securities pledged as collateral, fair value | $ 525,800 | 484,800
Mortgage-backed securities, weighted average life | 3 years |
accrued interest receivable, held to maturity securities | $ 3,600 |
Debt Securities, Held-to-maturity, Allowance for Credit Loss | 449 |
Des Moines |  |
Debt Securities, Available-for-sale [Line Items] |  |
Other investments | 10,800 | 15,700
Reclassified to Held to Maturity [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 331,000 | 116,300
Fair Value | 352,600 | 123,200
Gross Unrealized Gains | $ 25,600 | $ 6,600

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