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Long-Term Borrowings and Subordinated Debt - Key Terms of Junior Subordinated Debt Securities (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Junior Subordinated Debentures [Line Items] |  |  |
Junior subordinated debt securities | $ 64,277 | $ 45,619 | $ 45,619
Interest Rate at December 31, 2019 | 2.60% | 2.84% | 1.88%
Junior Subordinated Debt |  |  |
Junior Subordinated Debentures [Line Items] |  |  |
Junior subordinated debt securities | $ 34,753 | $ 25,000 | $ 25,000
Trust Preferred Securities |  |  |
Junior Subordinated Debentures [Line Items] |  |  |
Junior subordinated debt securities | 29,524 | $ 20,619 | $ 20,619
2001 Trust Preferred Securities | Trust Preferred Securities |  |  |
Junior Subordinated Debentures [Line Items] |  |  |
Junior subordinated debt securities | $ 5,155 |  |
Stated Maturity Date | Jul. 25, 2031 |  |
Optional redemption date at par | Any time after 7/25/2011 |  |
Regulatory Capital | Tier 1 |  |
Interest Rate at December 31, 2019 | 6.00% |  |
2001 Trust Preferred Securities | Trust Preferred Securities | LIBOR |  |  |
Junior Subordinated Debentures [Line Items] |  |  |
Interest Rate | 3.75% |  |
2005 Trust Preferred Securities | Trust Preferred Securities |  |  |
Junior Subordinated Debentures [Line Items] |  |  |
Junior subordinated debt securities | $ 4,124 |  |
Stated Maturity Date | May 23, 2035 |  |
Optional redemption date at par | Any time after 5/23/2010 |  |
Regulatory Capital | Tier 1 |  |
Interest Rate at December 31, 2019 | 3.68% |  |
2005 Trust Preferred Securities | Trust Preferred Securities | LIBOR |  |  |
Junior Subordinated Debentures [Line Items] |  |  |
Interest Rate | 1.77% |  |
2015 Junior Subordinated Debt | Junior Subordinated Debt |  |  |
Junior Subordinated Debentures [Line Items] |  |  |
Junior subordinated debt securities | $ 9,750 |  |
Stated Maturity Date | Mar. 06, 2025 |  |
Optional redemption date at par | Quarterly after 4/1/2020 |  |
Regulatory Capital | Tier 2 |  |
Interest Rate at December 31, 2019 | 4.25% |  |
2015 Junior Subordinated Debt | Junior Subordinated Debt | Prime Rate |  |  |
Junior Subordinated Debentures [Line Items] |  |  |
Interest Rate | 1.00% |  |
2006 Junior Subordinated Debt | Junior Subordinated Debt |  |  |
Junior Subordinated Debentures [Line Items] |  |  |
Junior subordinated debt securities | $ 25,000 |  |
Stated Maturity Date | Dec. 15, 2036 |  |
Optional redemption date at par | Any time after 9/15/2011 |  |
Regulatory Capital | Tier 2 |  |
Interest Rate at December 31, 2019 | 3.49% |  |
2006 Junior Subordinated Debt | Junior Subordinated Debt | LIBOR |  |  |
Junior Subordinated Debentures [Line Items] |  |  |
Interest Rate | 1.60% |  |
2008 Trust Preferred Securities | Trust Preferred Securities |  |  |
Junior Subordinated Debentures [Line Items] |  |  |
Junior subordinated debt securities | $ 20,619 |  |
Stated Maturity Date | Mar. 15, 2038 |  |
Optional redemption date at par | Any time after 3/15/2013 |  |
Regulatory Capital | Tier 1 |  |
Interest Rate at December 31, 2019 | 5.39% |  |
2008 Trust Preferred Securities | Trust Preferred Securities | LIBOR |  |  |
Junior Subordinated Debentures [Line Items] |  |  |
Interest Rate | 3.50% |  |

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