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Securities (Unrealized Loss NOT deemed to be OTTI) (Details) $ in Thousands | Sep. 30, 2020 USD ($) holding | Dec. 31, 2019 USD ($) holding
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Gain (Loss) on Securities [Line Items] |  |
Debt Securities, Available-for-sale, Unrealized Loss Position | $ 29,158 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 1,021 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (412) |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ (552) |
Summary of gross unrealized losses and fair value of investments |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding | 6 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 28,137 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (140) |
Agency mortgage-backed securities |  |
Gain (Loss) on Securities [Line Items] |  |
Available for Sale and Held to Maturity Securities in Unrealized Loss Positions Qualitative Disclosure Number of Positions | holding |  | 12
Debt Securities, Available-for-sale, Unrealized Loss Position | 399 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ (1) |
Summary of gross unrealized losses and fair value of investments |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding | 2 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 399 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (1) |
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Less than Twelve Months Fair Value |  | $ 34,009
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months |  | (59)
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Twelve Months or Longer Fair Value |  | 243
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months |  | (2)
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Fair Value |  | 34,252
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss |  | $ (61)
Agency Collateralized Mortgage Obligations [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Available for Sale and Held to Maturity Securities in Unrealized Loss Positions Qualitative Disclosure Number of Positions | holding |  | 17
Debt Securities, Available-for-sale, Unrealized Loss Position | 27,269 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ (119) |
Summary of gross unrealized losses and fair value of investments |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding | 2 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 27,269 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (119) |
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Less than Twelve Months Fair Value |  | $ 48,476
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months |  | (215)
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Twelve Months or Longer Fair Value |  | 37,382
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months |  | (653)
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Fair Value |  | 85,858
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss |  | $ (868)
Single issuer trust preferred securities issued by banks and insurers |  |
Gain (Loss) on Securities [Line Items] |  |
Available for Sale and Held to Maturity Securities in Unrealized Loss Positions Qualitative Disclosure Number of Positions | holding |  | 1
Debt Securities, Available-for-sale, Unrealized Loss Position | 469 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 0 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ (20) |
Summary of gross unrealized losses and fair value of investments |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding | 1 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 469 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | (20) |
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Less than Twelve Months Fair Value |  | $ 0
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months |  | 0
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Twelve Months or Longer Fair Value |  | 1,490
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months |  | (10)
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Fair Value |  | 1,490
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss |  | $ (10)
Pooled trust preferred securities issued by banks and insurers |  |
Gain (Loss) on Securities [Line Items] |  |
Available for Sale and Held to Maturity Securities in Unrealized Loss Positions Qualitative Disclosure Number of Positions | holding |  | 1
Debt Securities, Available-for-sale, Unrealized Loss Position | 1,021 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer | 1,021 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (412) |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ (412) |
Summary of gross unrealized losses and fair value of investments |  |
Debt Securities, Available-for-sale, Unrealized Loss Position, Number of Positions | holding | 1 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 0 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | $ 0 |
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Less than Twelve Months Fair Value |  | $ 0
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months |  | 0
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Twelve Months or Longer Fair Value |  | 1,114
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months |  | (374)
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Fair Value |  | 1,114
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss |  | $ (374)
Small Business Administration Pooled Securities [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Available for Sale and Held to Maturity Securities in Unrealized Loss Positions Qualitative Disclosure Number of Positions | holding |  | 1
Summary of gross unrealized losses and fair value of investments |  |
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Less than Twelve Months Fair Value |  | $ 7,349
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months |  | (55)
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Twelve Months or Longer Fair Value |  | 0
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months |  | 0
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Fair Value |  | 7,349
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss |  | $ (55)
Equity Securities [Member] |  |
Gain (Loss) on Securities [Line Items] |  |
Available for Sale and Held to Maturity Securities in Unrealized Loss Positions Qualitative Disclosure Number of Positions | holding |  | 32
Summary of gross unrealized losses and fair value of investments |  |
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Less than Twelve Months Fair Value |  | $ 89,834
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for less than 12 months |  | (329)
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Twelve Months or Longer Fair Value |  | 40,229
Unrealized loss position for available for sale and held to maturity securities in a continuous loss position for more than 12 months |  | (1,039)
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Fair Value |  | 130,063
Available for Sale and Held to Maturity Securities Continuous Unrealized Loss Position Aggregate Loss |  | $ (1,368)

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