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Securities - Investments in Pooled Trust Preferred Securities (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018
Investments in pooled trust preferred securities |  |
Amortized Cost | $ 1,276,871 | $ 1,264,529
Fair Value | 1,290,613 | 1,250,777
Gross Unrealized Losses | (4,878) | (18,269)
Trust preferred securities |  |
Investments in pooled trust preferred securities |  |
Amortized Cost | 12,153 | 12,359
Fair Value | 9,986 | $ 10,633
Gross Unrealized Losses | (2,167) |
XXIII |  |
Investments in pooled trust preferred securities |  |
Amortized Cost | 8,182 |
Fair Value | 6,410 |
Gross Unrealized Losses | $ (1,772) |
Issuers currently in deferral or default (percent) | 15.00% |
XXVI |  |
Investments in pooled trust preferred securities |  |
Amortized Cost | $ 3,971 |
Fair Value | 3,576 |
Gross Unrealized Losses | $ (395) |
Issuers currently in deferral or default (percent) | 19.00% |

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