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Securities, AFS Securities in Continuous Unrealized Loss Position (Details) $ in Thousands | Mar. 31, 2020 USD ($) Position | Dec. 31, 2019 USD ($) Position
--- | --- | ---
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months | $ 48,520 | $ 198,501
12 months or longer | 3,950 | 97,243
Total | 52,470 | 295,744
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | (166) | (718)
12 months or longer | (52) | (815)
Total | $ (218) | $ (1,533)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 16 | 48
12 months or longer | Position | 3 | 34
Total | Position | 19 | 82
Federal Agency [Member] |  |
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months |  | $ 14,891
12 months or longer |  | 9,866
Total |  | 24,757
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months |  | (109)
12 months or longer |  | (134)
Total |  | $ (243)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position |  | 2
12 months or longer | Position |  | 1
Total | Position |  | 3
State & Municipal [Member] |  |
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months |  | $ 2,503
12 months or longer |  | 0
Total |  | 2,503
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months |  | (20)
12 months or longer |  | 0
Total |  | $ (20)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position |  | 1
12 months or longer | Position |  | 0
Total | Position |  | 1
Mortgage-Backed [Member] |  |
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months | $ 6,003 | $ 67,986
12 months or longer | 789 | 37,745
Total | 6,792 | 105,731
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | (46) | (273)
12 months or longer | (9) | (122)
Total | $ (55) | $ (395)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 3 | 21
12 months or longer | Position | 2 | 16
Total | Position | 5 | 37
Collateralized Mortgage Obligations [Member] |  |
Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 months | $ 42,517 | $ 113,121
12 months or longer | 3,161 | 49,632
Total | 45,678 | 162,753
Unrealized Loss Position, Unrealized Losses [Abstract] |  |
Less than 12 months | (120) | (316)
12 months or longer | (43) | (559)
Total | $ (163) | $ (875)
Unrealized Loss Position, Number of Positions [Abstract] |  |
Less than 12 months | Position | 13 | 24
12 months or longer | Position | 1 | 17
Total | Position | 14 | 41

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