Investment Securities - Schedule of the Fair Values of Securities with Unrealized Losses (Details) $ in Thousands	Dec. 31, 2021 USD ($)
Marketable Securities [Line Items]
AFS, Less than 12 months, Estimated Fair Value	$ 328,196
AFS, Less than 12 months, Unrealized Losses	3,956
AFS, 12 months or more, Estimated Fair Value	0
AFS, 12 months or more, Unrealized Losses	0
AFS, Total Estimated Fair Value	328,196
AFS, Total Unrealized Losses	3,956
State and political subdivisions
Marketable Securities [Line Items]
AFS, Less than 12 months, Estimated Fair Value	60,083
AFS, Less than 12 months, Unrealized Losses	990
AFS, 12 months or more, Estimated Fair Value	0
AFS, 12 months or more, Unrealized Losses	0
AFS, Total Estimated Fair Value	60,083
AFS, Total Unrealized Losses	990
Mortgage-backed securities issued or guaranteed by U.S. government agencies or sponsored enterprises
Marketable Securities [Line Items]
AFS, Less than 12 months, Estimated Fair Value	163,652
AFS, Less than 12 months, Unrealized Losses	2,200
AFS, 12 months or more, Estimated Fair Value	0
AFS, 12 months or more, Unrealized Losses	0
AFS, Total Estimated Fair Value	163,652
AFS, Total Unrealized Losses	2,200
Corporate bonds
Marketable Securities [Line Items]
AFS, Less than 12 months, Estimated Fair Value	55,120
AFS, Less than 12 months, Unrealized Losses	272
AFS, 12 months or more, Estimated Fair Value	0
AFS, 12 months or more, Unrealized Losses
AFS, Total Estimated Fair Value	55,120
AFS, Total Unrealized Losses	272
Asset backed securities issued or guaranteed by U.S. Government agencies or sponsored enterprises
Marketable Securities [Line Items]
AFS, Less than 12 months, Estimated Fair Value	49,341
AFS, Less than 12 months, Unrealized Losses	494
AFS, 12 months or more, Estimated Fair Value	0
AFS, 12 months or more, Unrealized Losses	0
AFS, Total Estimated Fair Value	49,341
AFS, Total Unrealized Losses	$ 494