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Investment Securities Schedule of Held to Maturity Securities (Details) $ in Thousands | Dec. 31, 2019 USD ($) position | Dec. 31, 2018 USD ($) position
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Schedule of Held-to-maturity Securities [Line Items] |  |
Held-To-Maturity Securities, at Amortized Cost | $ 245,065 | $ 283,476
Held-To-Maturity Securities, at Fair Value |  | 280,338
Gross Unrealized Gains | 4,647 | 486
Gross Unrealized Losses | 94 | 3,624
Held-To-Maturity Securities, Pledged as Collateral, at Fair Value | 237,969 | 266,341
Maturities of Debt Securities, at Amortized Cost: |  |
Within One Year | 20,775 |
From 1 - 5 Years | 148,440 |
From 5 - 10 Years | 74,259 |
Over 10 Years | 1,591 |
Maturities of Debt Securities, at Fair Value: |  |
Within One Year | 20,862 |
From 1 - 5 Years | 150,891 |
From 5 - 10 Years | 76,242 |
Over 10 Years | 1,623 |
Securities in a Continuous Loss Position, at Fair Value: |  |
Less than 12 Months | 1,438 | 65,402
12 Months or Longer | 1,994 | 124,617
Total | $ 3,432 | $ 190,019
Number of Securities in a Continuous Loss Position | position | 10 | 458
Unrealized Losses on Securities in a Continuous Loss Position: |  |
Less than 12 Months | $ 85 | $ 618
12 Months or Longer | 9 | 3,006
Total | 94 | 3,624
State and Municipal Obligations |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-To-Maturity Securities, at Amortized Cost | 208,243 | 235,782
Held-To-Maturity Securities, at Fair Value | 212,319 | 233,359
Gross Unrealized Gains | 4,170 | 486
Gross Unrealized Losses | 94 | 2,909
Maturities of Debt Securities, at Amortized Cost: |  |
Within One Year | 17,243 |
From 1 - 5 Years | 115,150 |
From 5 - 10 Years | 74,259 |
Over 10 Years | 1,591 |
Maturities of Debt Securities, at Fair Value: |  |
Within One Year | 17,276 |
From 1 - 5 Years | 117,178 |
From 5 - 10 Years | 76,242 |
Over 10 Years | 1,623 |
Securities in a Continuous Loss Position, at Fair Value: |  |
Less than 12 Months | 1,438 | 32,093
12 Months or Longer | 1,994 | 110,947
Total | $ 3,432 | $ 143,040
Number of Securities in a Continuous Loss Position | position | 10 | 411
Unrealized Losses on Securities in a Continuous Loss Position: |  |
Less than 12 Months | $ 85 | $ 162
12 Months or Longer | 9 | 2,747
Total | 94 | 2,909
Collateralized Mortgage Backed Securities |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-To-Maturity Securities, at Amortized Cost | 36,822 | 47,694
Held-To-Maturity Securities, at Fair Value | 37,299 | 46,979
Gross Unrealized Gains | 477 | 0
Gross Unrealized Losses | 0 | 715
Maturities of Debt Securities, at Amortized Cost: |  |
Within One Year | 3,532 |
From 1 - 5 Years | 33,290 |
From 5 - 10 Years | 0 |
Over 10 Years | 0 |
Maturities of Debt Securities, at Fair Value: |  |
Within One Year | 3,586 |
From 1 - 5 Years | 33,713 |
From 5 - 10 Years | 0 |
Over 10 Years | 0 |
Securities in a Continuous Loss Position, at Fair Value: |  |
Less than 12 Months | 0 | 33,309
12 Months or Longer | 0 | 13,670
Total | $ 0 | $ 46,979
Number of Securities in a Continuous Loss Position | position | 0 | 47
Unrealized Losses on Securities in a Continuous Loss Position: |  |
Less than 12 Months | $ 0 | $ 456
12 Months or Longer | 0 | 259
Total | 0 | 715
Agency Securities | Collateralized Mortgage Backed Securities |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-To-Maturity Securities, at Amortized Cost | 1,703 | 2,180
Agency Securities | Collateralized Mortgage Backed Securities | Fair Value, Measurements, Recurring |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-To-Maturity Securities, at Fair Value | 1,720 | 2,143
US Government-sponsored Enterprises Debt Securities | Collateralized Mortgage Backed Securities |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-To-Maturity Securities, at Amortized Cost | 35,119 | 45,514
US Government-sponsored Enterprises Debt Securities | Collateralized Mortgage Backed Securities | Fair Value, Measurements, Recurring |  |
Schedule of Held-to-maturity Securities [Line Items] |  |
Held-To-Maturity Securities, at Fair Value | $ 35,579 | $ 44,836

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