Capital Requirements - Tabular Disclosure (Details) $ in Thousands	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Total Capital (to risk-weighted assets)
Actual, Amount	$ 598,795	$ 594,371
Required For Capital Adequacy Purposes, Amount	$ 402,267	$ 403,060
Actual, Ratio (as a percent)	0.156	0.155
Required For Capital Adequacy Purposes, Ratio (as a percent)	0.105	0.105
Tier 1 Capital (to risk-weighted assets)
Actual, Amount	$ 513,473	$ 511,799
Required For Capital Adequacy Purposes, Amount	$ 325,644	$ 326,287
Actual, Ratio (as a percent)	0.134	0.133
Required For Capital Adequacy Purposes, Ratio (as a percent)	0.085	0.085
Common Equity Tier 1 Capital (to risk-weighted assets)
Actual, Amount	$ 513,473	$ 511,799
Required For Capital Adequacy Purposes, Amount	$ 268,178	$ 268,707
Actual, Ratio (as a percent)	0.134%	0.133%
Required For Capital Adequacy Purposes, Ratio (as a percent)	0.07%	0.07%
Tier 1 Capital (to average assets)
Actual, Amount	$ 513,473	$ 511,799
Required For Capital Adequacy Purposes, Amount	$ 200,413	$ 204,024
Actual, Ratio (as a percent)	0.102	0.100
Required For Capital Adequacy Purposes, Ratio (as a percent)	0.040	0.040
HBC
Total Capital (to risk-weighted assets)
Actual, Amount	$ 577,519	$ 572,907
To Be Well Capitalized Under Regulatory Requirements, Amount	382,910	383,542
Required For Capital Adequacy Purposes, Amount	$ 402,055	$ 402,719
Actual, Ratio (as a percent)	0.151	0.149
To Be Well Capitalized Under Regulatory Requirements, Ratio (as a percent)	0.100	0.100
Required For Capital Adequacy Purposes, Ratio (as a percent)	0.105	0.105
Tier 1 Capital (to risk-weighted assets)
Actual, Amount	$ 531,736	$ 529,836
To Be Well Capitalized Under Regulatory Requirements, Amount	306,328	306,834
Required For Capital Adequacy Purposes, Amount	$ 325,473	$ 326,011
Actual, Ratio (as a percent)	0.139	0.138
To Be Well Capitalized Under Regulatory Requirements, Ratio (as a percent)	0.080	0.080
Required For Capital Adequacy Purposes, Ratio (as a percent)	0.085	0.085
Common Equity Tier 1 Capital (to risk-weighted assets)
Actual, Amount	$ 531,736	$ 529,836
To Be Well Capitalized Under Regulatory Requirements, Amount	248,891	249,302
Required For Capital Adequacy Purposes, Amount	$ 268,037	$ 268,479
Actual, Ratio (as a percent)	0.139%	0.138%
To Be Well Capitalized Under Regulatory Requirements, Ratio (as a percent)	0.065%	0.065%
Required For Capital Adequacy Purposes, Ratio (as a percent)	0.07%	0.07%
Tier 1 Capital (to average assets)
Actual, Amount	$ 531,736	$ 529,836
To Be Well Capitalized Under Regulatory Requirements, Amount	250,346	254,869
Required For Capital Adequacy Purposes, Amount	$ 200,277	$ 203,895
Actual, Ratio (as a percent)	0.106	0.104
To Be Well Capitalized Under Regulatory Requirements, Ratio (as a percent)	0.050	0.050
Required For Capital Adequacy Purposes, Ratio (as a percent)	0.040	0.040