Loans and Allowance for Loan Losses - Aging of Past Due Loans by Class of Loan (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Loans	$ 4,063,495	$ 3,645,162
Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	4,057,254	3,636,828
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	3,072	6,507
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,173	956
Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	996	871
Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	6,241	8,334
Construction Real Estate Loans
Financing Receivable, Past Due [Line Items]
Loans	554,345	447,860
Construction Real Estate Loans | Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	553,729	447,720
Construction Real Estate Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	160	82
Construction Real Estate Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	410	58
Construction Real Estate Loans | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	46	0
Construction Real Estate Loans | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	616	140
1-4 Family Residential Real Estate Loans
Financing Receivable, Past Due [Line Items]
Loans	646,692	651,140
1-4 Family Residential Real Estate Loans | Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	644,262	647,081
1-4 Family Residential Real Estate Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,367	3,226
1-4 Family Residential Real Estate Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	547	606
1-4 Family Residential Real Estate Loans | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	516	227
1-4 Family Residential Real Estate Loans | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,430	4,059
Commercial Real Estate Loans
Financing Receivable, Past Due [Line Items]
Loans	1,901,921	1,598,172
Commercial Real Estate Loans | Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	1,901,256	1,596,882
Commercial Real Estate Loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	243	1,191
Commercial Real Estate Loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	422	0
Commercial Real Estate Loans | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	99
Commercial Real Estate Loans | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	665	1,290
Commercial loans
Financing Receivable, Past Due [Line Items]
Loans	433,538	418,998
Commercial loans | Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	431,216	416,687
Commercial loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	1,094	1,523
Commercial loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	794	251
Commercial loans | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	434	537
Commercial loans | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	2,322	2,311
Municipal loans
Financing Receivable, Past Due [Line Items]
Loans	449,219	443,078
Municipal loans | Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	449,219	442,908
Municipal loans | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	170
Municipal loans | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Municipal loans | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	0
Municipal loans | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	170
Loans to individuals
Financing Receivable, Past Due [Line Items]
Loans	77,780	85,914
Loans to individuals | Financial Asset, Current
Financing Receivable, Past Due [Line Items]
Loans	77,572	85,550
Loans to individuals | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	208	315
Loans to individuals | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	41
Loans to individuals | Greater than 90 Days Past Due
Financing Receivable, Past Due [Line Items]
Loans	0	8
Loans to individuals | Financial Asset, Past Due
Financing Receivable, Past Due [Line Items]
Loans	$ 208	$ 364