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Securities - Securities with Unrealized Losses (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Available-for-sale securities |  |
Fair value, less than 12 months | $ 85,636 | $ 241,757
Unrealized losses, less than 12 months | 519 | 1,371
Fair value, 12 months or longer | 20,089 | 288,210
Unrealized losses, 12 months or longer | 290 | 3,747
Fair Value | 105,725 | 529,967
Unrealized Losses | 809 | 5,118
Obligations of U.S. Government sponsored entities |  |
Available-for-sale securities |  |
Fair value, less than 12 months | 24,209 | 18,654
Unrealized losses, less than 12 months | 42 | 76
Fair value, 12 months or longer | 0 | 3,479
Unrealized losses, 12 months or longer | 0 | 8
Fair Value | 24,209 | 22,133
Unrealized Losses | 42 | 84
Obligations of U.S. states and political subdivisions |  |
Available-for-sale securities |  |
Fair value, less than 12 months | 18,179 | 10,456
Unrealized losses, less than 12 months | 127 | 54
Fair value, 12 months or longer | 0 | 2,300
Unrealized losses, 12 months or longer | 0 | 7
Fair Value | 18,179 | 12,756
Unrealized Losses | 127 | 61
U.S. Government agencies |  |
Available-for-sale securities |  |
Fair value, less than 12 months | 38,813 | 54,846
Unrealized losses, less than 12 months | 340 | 489
Fair value, 12 months or longer | 6,618 | 45,999
Unrealized losses, 12 months or longer | 114 | 1,030
Fair Value | 45,431 | 100,845
Unrealized Losses | 454 | 1,519
U.S. Government sponsored entities |  |
Available-for-sale securities |  |
Fair value, less than 12 months | 4,435 | 157,801
Unrealized losses, less than 12 months | 10 | 752
Fair value, 12 months or longer | 11,038 | 233,999
Unrealized losses, 12 months or longer | 109 | 2,635
Fair Value | 15,473 | 391,800
Unrealized Losses | 119 | 3,387
U.S. corporate debt securities |  |
Available-for-sale securities |  |
Fair value, less than 12 months | 0 | 0
Unrealized losses, less than 12 months | 0 | 0
Fair value, 12 months or longer | 2,433 | 2,433
Unrealized losses, 12 months or longer | 67 | 67
Fair Value | 2,433 | 2,433
Unrealized Losses | $ 67 | $ 67

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