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v3.19.3.a.u2

Investments - Narrative (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 USD ($) number_of_securities | Dec. 31, 2018 USD ($) number_of_securities
Debt Securities, Available-for-sale [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | $ 1,115,323 | $ 733,279
Other investments | $ 38,044 | $ 26,654
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | number_of_securities | 73 | 131
Fair Value | $ 1,135,317 | $ 721,369
accumulated other comprehensive income loss available for sale securities adjustment pre tax | 6,900 |
Gross Unrealized Gains | $ 21,548 | 1,487
Maximum percentage of shareholders' equity security holdings held of one issuer | 10.00% |
Available-for-sale securities pledged as collateral, fair value | $ 484,800 | 433,700
Mortgage-backed securities, weighted average life | 4 years |
Des Moines |  |
Debt Securities, Available-for-sale [Line Items] |  |
Other investments | $ 15,700 | $ 9,200
Reclassified to Held to Maturity [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Debt Securities, Available-for-sale, Amortized Cost | 116,300 |
Fair Value | 123,200 |
Gross Unrealized Gains | $ 6,800 |

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