Securities - Amortized Cost and Estimated Fair Value of Investment Securities by Contractual Maturity (Details) $ in Thousands	Mar. 31, 2023 USD ($)
Amortized Cost
Less than one year	$ 33,091
Due after one year through five years	165,074
Due after five years through ten years	216,802
Due after ten years	273,873
Total amortized cost	688,840
Estimated Fair Value
Less than one year	32,799
Due after one year through five years	153,196
Due after five years through ten years	203,049
Due after ten years	254,726
Total estimated fair value	$ 643,770