Capital Requirements - Tabular Disclosure (Details) $ in Thousands	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)
Total Capital (to risk-weighted assets)
Actual, Amount	$ 491,475	$ 483,870
Required For Capital Adequacy Purposes, Amount	$ 329,965	$ 307,067
Actual, Ratio (as a percent)	0.156	0.165
Required For Capital Adequacy Purposes, Ratio (as a percent)	0.105	0.105
Tier 1 Capital (to risk-weighted assets)
Actual, Amount	$ 418,134	$ 410,307
Required For Capital Adequacy Purposes, Amount	$ 267,115	$ 248,578
Actual, Ratio (as a percent)	0.133	0.140
Required For Capital Adequacy Purposes, Ratio (as a percent)	0.085	0.085
Common Equity Tier 1 Capital (to risk-weighted assets)
Actual, Amount	$ 418,134	$ 410,307
Required For Capital Adequacy Purposes, Amount	$ 219,977	$ 204,711
Actual, Ratio (as a percent)	0.133%	0.14%
Required For Capital Adequacy Purposes, Ratio (as a percent)	0.07%	0.07%
Tier 1 Capital (to average assets)
Actual, Amount	$ 418,134	$ 410,307
Required For Capital Adequacy Purposes, Amount	$ 194,156	$ 180,281
Actual, Ratio (as a percent)	0.086	0.091
Required For Capital Adequacy Purposes, Ratio (as a percent)	0.040	0.040
HBC (Wholly-owned Subsidiary)
Total Capital (to risk-weighted assets)
Actual, Amount	$ 469,701	$ 461,933
To Be Well Capitalized Under Regulatory Requirements, Amount	314,070	292,258
Required For Capital Adequacy Purposes, Amount	$ 329,773	$ 306,871
Actual, Ratio (as a percent)	0.150	0.158
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	$ 436,192	$ 428,109
To Be Well Capitalized Under Regulatory Requirements, Amount	251,256	233,806
Required For Capital Adequacy Purposes, Amount	$ 266,959	$ 248,419
Actual, Ratio (as a percent)	0.139	0.146
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	$ 436,192	$ 428,109
To Be Well Capitalized Under Regulatory Requirements, Amount	204,145	189,968
Required For Capital Adequacy Purposes, Amount	$ 219,849	$ 204,580
Actual, Ratio (as a percent)	0.139%	0.146%
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	$ 436,192	$ 428,109
To Be Well Capitalized Under Regulatory Requirements, Amount	242,600	225,263
Required For Capital Adequacy Purposes, Amount	$ 194,080	$ 180,211
Actual, Ratio (as a percent)	0.090	0.095
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