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Investment Securities - Held to Maturity (Details) | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2021 USD ($) security | Dec. 31, 2020 USD ($) security | Sep. 30, 2020 USD ($) security
Schedule of Held-to-maturity Securities [Line Items] |  |  |
Debt securities, available-for-sale, allowance for credit loss | $ 0 |  |
Held-To-Maturity Securities, at Amortized Cost | 198,337,000 | $ 218,405,000 | $ 224,799,000
Gross Unrealized Gains | 5,599,000 | 8,174,000 | 8,745,000
Gross Unrealized Losses | 0 | (3,000) | (43,000)
Held-To-Maturity Securities, at Fair Value | 203,936,000 | 226,576,000 | 233,501,000
Maturities of Debt Securities, at Amortized Cost: |  |  |
Within One Year | 24,221,000 |  |
From 1 - 5 Years | 157,459,000 |  |
From 5 - 10 Years | 15,791,000 |  |
Over 10 Years | 866,000 |  |
Maturities of Debt Securities, at Fair Value: |  |  |
Within One Year | 24,407,000 |  |
From 1 - 5 Years | 162,185,000 |  |
From 5 - 10 Years | 16,473,000 |  |
Over 10 Years | 871,000 |  |
Securities in a Continuous Loss Position, at Fair Value: |  |  |
Less than 12 Months | 0 | 1,513,000 | 1,476,000
12 Months or Longer | 0 | 0 | 0
Total | $ 0 | $ 1,513,000 | $ 1,476,000
Number of Securities in a Continuous Loss Position | security | 0 | 4 | 4
Unrealized Losses on Securities in a Continuous Loss Position: |  |  |
Less than 12 Months | $ 0 | $ 3,000 | $ 42,000
12 Months or Longer | 0 | 0 | 1,000
Total | 0 | 3,000 | 43,000
Debt securities, available-for-sale, allowance for credit loss, not to sell before recovery, credit loss, previously recorded, expense (reversal) | 0 |  |
Debt securities, held-to-maturity, allowance for credit loss | 0 |  |
Equity Securities | 1,886,000 | 1,636,000 | 1,511,000
State and Municipal Obligations |  |  |
Schedule of Held-to-maturity Securities [Line Items] |  |  |
Held-To-Maturity Securities, at Amortized Cost | 179,952,000 | 192,352,000 | 195,735,000
Gross Unrealized Gains | 4,834,000 | 7,080,000 | 7,488,000
Gross Unrealized Losses | 0 | (3,000) | (43,000)
Held-To-Maturity Securities, at Fair Value | 184,786,000 | 199,429,000 | 203,180,000
Maturities of Debt Securities, at Amortized Cost: |  |  |
Within One Year | 23,281,000 |  |
From 1 - 5 Years | 140,014,000 |  |
From 5 - 10 Years | 15,791,000 |  |
Over 10 Years | 866,000 |  |
Maturities of Debt Securities, at Fair Value: |  |  |
Within One Year | 23,448,000 |  |
From 1 - 5 Years | 143,994,000 |  |
From 5 - 10 Years | 16,473,000 |  |
Over 10 Years | 871,000 |  |
Securities in a Continuous Loss Position, at Fair Value: |  |  |
Less than 12 Months | 0 | 1,513,000 | 1,476,000
12 Months or Longer | 0 | 0 | 0
Total | $ 0 | $ 1,513,000 | $ 1,476,000
Number of Securities in a Continuous Loss Position | security | 0 | 4 | 4
Unrealized Losses on Securities in a Continuous Loss Position: |  |  |
Less than 12 Months | $ 0 | $ 3,000 | $ 42,000
12 Months or Longer | 0 | 0 | 1,000
Total | 0 | 3,000 | 43,000
Mortgage-Backed Securities - Residential |  |  |
Schedule of Held-to-maturity Securities [Line Items] |  |  |
Held-To-Maturity Securities, at Amortized Cost | 18,385,000 | 26,053,000 | 29,064,000
Gross Unrealized Gains | 765,000 | 1,094,000 | 1,257,000
Gross Unrealized Losses | 0 | 0 | 0
Held-To-Maturity Securities, at Fair Value | 19,150,000 | 27,147,000 | 30,321,000
Maturities of Debt Securities, at Amortized Cost: |  |  |
Within One Year | 940,000 |  |
From 1 - 5 Years | 17,445,000 |  |
From 5 - 10 Years | 0 |  |
Over 10 Years | 0 |  |
Maturities of Debt Securities, at Fair Value: |  |  |
Within One Year | 959,000 |  |
From 1 - 5 Years | 18,191,000 |  |
From 5 - 10 Years | 0 |  |
Over 10 Years | 0 |  |
Securities in a Continuous Loss Position, at Fair Value: |  |  |
Less than 12 Months | 0 | 0 | 0
12 Months or Longer | 0 | 0 | 0
Total | $ 0 | $ 0 | $ 0
Number of Securities in a Continuous Loss Position | security | 0 | 0 | 0
Unrealized Losses on Securities in a Continuous Loss Position: |  |  |
Less than 12 Months | $ 0 | $ 0 | $ 0
12 Months or Longer | 0 | 0 | 0
Total | 0 | 0 | 0
Fair Value, Measurements, Recurring |  |  |
Unrealized Losses on Securities in a Continuous Loss Position: |  |  |
Equity Securities | 1,886,000 | 1,636,000 | 1,511,000
Collateral Pledged |  |  |
Schedule of Held-to-maturity Securities [Line Items] |  |  |
Held-To-Maturity Securities, Pledged as Collateral, at Fair Value | 192,929,000 | 211,176,000 | 221,844,000
US Government Agencies Debt Securities | Mortgage-Backed Securities - Residential |  |  |
Schedule of Held-to-maturity Securities [Line Items] |  |  |
Held-To-Maturity Securities, at Amortized Cost | 6,302,000 | 9,440,000 | 10,669,000
US Government Agencies Debt Securities | Fair Value, Measurements, Recurring | Mortgage-Backed Securities - Residential |  |  |
Schedule of Held-to-maturity Securities [Line Items] |  |  |
Held-To-Maturity Securities, at Fair Value | 6,506,000 | 9,762,000 | 11,049,000
US Government-sponsored Enterprises Debt Securities | Mortgage-Backed Securities - Residential |  |  |
Schedule of Held-to-maturity Securities [Line Items] |  |  |
Held-To-Maturity Securities, at Amortized Cost | 12,083,000 | 16,613,000 | 18,392,000
US Government-sponsored Enterprises Debt Securities | Fair Value, Measurements, Recurring | Mortgage-Backed Securities - Residential |  |  |
Schedule of Held-to-maturity Securities [Line Items] |  |  |
Held-To-Maturity Securities, at Fair Value | $ 12,644,000 | $ 17,385,000 | $ 19,272,000

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