Capital Requirements - Tabular Disclosure (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Total Capital (to risk-weighted assets)
Actual, Amount	$ 457,158	$ 344,597
Required For Capital Adequacy Purposes, Amount	$ 329,306	$ 227,514
Actual, Ratio (as a percent)	14.60%	15.00%
Required For Capital Adequacy Purposes, Ratio (as a percent)	10.50%	9.875%
Tier 1 Capital (to risk-weighted assets)
Actual, Amount	$ 393,432	$ 276,675
Required For Capital Adequacy Purposes, Amount	$ 266,581	$ 181,435
Actual, Ratio (as a percent)	12.50%	12.00%
Required For Capital Adequacy Purposes, Ratio (as a percent)	8.50%	7.875%
Common Equity Tier 1 Capital (to risk-weighted assets)
Actual, Amount	$ 393,432	$ 276,675
Required For Capital Adequacy Purposes, Amount	$ 219,538	$ 146,876
Actual, Ratio (as a percent)	12.50%	12.00%
Required For Capital Adequacy Purposes, Ratio (as a percent)	7.00%	6.375%
Tier 1 Capital (to average assets)
Actual, Amount	$ 393,432	$ 276,675
Required For Capital Adequacy Purposes, Amount	$ 161,677	$ 124,726
Actual, Ratio (as a percent)	9.70%	8.90%
Required For Capital Adequacy Purposes, Ratio (as a percent)	4.00%	4.00%
HBC (Wholly-owned Subsidiary)
Total Capital (to risk-weighted assets)
Actual, Amount	$ 435,757	$ 322,283
To Be Well Capitalized Under Regulatory Requirements, Amount	313,485	230,275
Required For Capital Adequacy Purposes, Amount	$ 329,159	$ 227,397
Actual, Ratio (as a percent)	13.90%	14.00%
To Be Well Capitalized Under Regulatory Requirements, Ratio (as a percent)	10.00%	10.00%
Required For Capital Adequacy Purposes, Ratio (as a percent)	10.50%	9.875%
Tier 1 Capital (to risk-weighted assets)
Actual, Amount	$ 411,585	$ 293,730
To Be Well Capitalized Under Regulatory Requirements, Amount	250,788	184,220
Required For Capital Adequacy Purposes, Amount	$ 266,462	$ 181,342
Actual, Ratio (as a percent)	13.10%	12.80%
To Be Well Capitalized Under Regulatory Requirements, Ratio (as a percent)	8.00%	8.00%
Required For Capital Adequacy Purposes, Ratio (as a percent)	8.50%	7.875%
Common Equity Tier 1 Capital (to risk-weighted assets)
Actual, Amount	$ 411,585	$ 293,730
To Be Well Capitalized Under Regulatory Requirements, Amount	203,765	149,679
Required For Capital Adequacy Purposes, Amount	$ 219,439	$ 146,800
Actual, Ratio (as a percent)	13.10%	12.80%
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%	6.375%
Tier 1 Capital (to average assets)
Actual, Amount	$ 411,585	$ 293,730
To Be Well Capitalized Under Regulatory Requirements, Amount	202,013	155,832
Required For Capital Adequacy Purposes, Amount	$ 161,611	$ 124,666
Actual, Ratio (as a percent)	10.20%	9.40%
To Be Well Capitalized Under Regulatory Requirements, Ratio (as a percent)	5.00%	5.00%
Required For Capital Adequacy Purposes, Ratio (as a percent)	4.00%	4.00%