Securities Securities - Amortized Cost and Fair Value of Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Amortized Cost	$ 188,996	$ 194,282
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	12,221	152
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	0	1,303
Fair Value	201,217	193,131
Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract]
Due in one year or less	1,062
Due in one year to five years	0
Due in five to ten years	5,772
Due after ten years	182,162
Mortgage-backed securities	0
Asset-backed securities	0
Amortized Cost	188,996	194,282
Debt Securities, Held-to-maturity, Maturity, Fair Value [Abstract]
Due in one year or less	1,062
Due in one year to five years	0
Due in five to ten years	5,860
Due after ten years	194,295
Mortgage-backed securities	0
Asset-backed securities	0
Fair Value	201,217	193,131
State And Municipal Securities
Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract]
Amortized Cost	188,996	194,282
Debt Securities, Held-to-maturity, Accumulated Unrecognized Gain	12,221	152
Debt Securities, Held-to-maturity, Accumulated Unrecognized Loss	0	1,303
Fair Value	201,217	193,131
Debt Securities, Held-to-maturity, Maturity, Amortized Cost, Net [Abstract]
Amortized Cost	188,996	194,282
Debt Securities, Held-to-maturity, Maturity, Fair Value [Abstract]
Fair Value	$ 201,217	$ 193,131