Capital Requirements - Tabular Disclosure (Details) $ in Thousands	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Total Capital (to risk-weighted assets)
Actual, Amount	$ 483,870	$ 457,158
Required For Capital Adequacy Purposes, Amount	$ 307,067	$ 329,306
Actual, Ratio (as a percent)	16.5	14.6
Required For Capital Adequacy Purposes, Ratio (as a percent)	10.5	10.5
Tier 1 Capital (to risk-weighted assets)
Actual, Amount	$ 410,307	$ 393,432
Required For Capital Adequacy Purposes, Amount	$ 248,578	$ 266,581
Actual, Ratio (as a percent)	14.0	12.5
Required For Capital Adequacy Purposes, Ratio (as a percent)	8.5	8.5
Common Equity Tier 1 Capital (to risk-weighted assets)
Actual, Amount	$ 410,307	$ 393,432
Required For Capital Adequacy Purposes, Amount	$ 204,711	$ 219,538
Actual, Ratio (as a percent)	14.00%	12.50%
Required For Capital Adequacy Purposes, Ratio (as a percent)	7.00%	7.00%
Tier 1 Capital (to average assets)
Actual, Amount	$ 410,307	$ 393,432
Required For Capital Adequacy Purposes, Amount	$ 180,281	$ 161,677
Actual, Ratio (as a percent)	9.1	9.7
Required For Capital Adequacy Purposes, Ratio (as a percent)	4.0	4.0
HBC (Wholly-owned Subsidiary)
Total Capital (to risk-weighted assets)
Actual, Amount	$ 461,933	$ 435,757
To Be Well Capitalized Under Regulatory Requirements, Amount	292,258	313,485
Required For Capital Adequacy Purposes, Amount	$ 306,871	$ 329,159
Actual, Ratio (as a percent)	15.8	13.9
To Be Well Capitalized Under Regulatory Requirements, Ratio (as a percent)	10.0	10.0
Required For Capital Adequacy Purposes, Ratio (as a percent)	10.5	10.5
Tier 1 Capital (to risk-weighted assets)
Actual, Amount	$ 428,109	$ 411,585
To Be Well Capitalized Under Regulatory Requirements, Amount	233,806	250,788
Required For Capital Adequacy Purposes, Amount	$ 248,419	$ 266,462
Actual, Ratio (as a percent)	14.6	13.1
To Be Well Capitalized Under Regulatory Requirements, Ratio (as a percent)	8.0	8.0
Required For Capital Adequacy Purposes, Ratio (as a percent)	8.5	8.5
Common Equity Tier 1 Capital (to risk-weighted assets)
Actual, Amount	$ 428,109	$ 411,585
To Be Well Capitalized Under Regulatory Requirements, Amount	189,968	203,765
Required For Capital Adequacy Purposes, Amount	$ 204,580	$ 219,439
Actual, Ratio (as a percent)	14.60%	13.10%
To Be Well Capitalized Under Regulatory Requirements, Ratio (as a percent)	6.50%	6.50%
Required For Capital Adequacy Purposes, Ratio (as a percent)	7.00%	7.00%
Tier 1 Capital (to average assets)
Actual, Amount	$ 428,109	$ 411,585
To Be Well Capitalized Under Regulatory Requirements, Amount	225,263	202,013
Required For Capital Adequacy Purposes, Amount	$ 180,211	$ 161,611
Actual, Ratio (as a percent)	9.5	10.2
To Be Well Capitalized Under Regulatory Requirements, Ratio (as a percent)	5.0	5.0
Required For Capital Adequacy Purposes, Ratio (as a percent)	4.0	4.0