Capital Requirements - Tabular Disclosure (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Total Capital (to risk-weighted assets)
Actual, Amount	$ 230,697	$ 218,915
Required For Capital Adequacy Purposes, Amount	$ 156,339	$ 140,041
Actual, Ratio (as a percent)	12.70%	12.50%
Required For Capital Adequacy Purposes, Ratio (as a percent)	8.625%	8.00%
Capital conservation buffer (as a percent)	0.625%
Tier 1 Capital (to risk-weighted assets)
Actual, Amount	$ 210,021	$ 199,299
Required For Capital Adequacy Purposes, Amount	$ 120,086	$ 105,031
Actual, Ratio (as a percent)	11.60%	11.40%
Required For Capital Adequacy Purposes, Ratio (as a percent)	6.625%	6.00%
Common Equity Tier 1 Capital (to risk-weighted assets)
Actual, Amount	$ 210,021	$ 181,221
Required For Capital Adequacy Purposes, Amount	$ 92,897	$ 78,773
Actual, Ratio (as a percent)	11.60%	10.40%
Required For Capital Adequacy Purposes, Ratio (as a percent)	5.125%	4.50%
Tier 1 Capital (to average assets)
Actual, Amount	$ 210,021	$ 199,299
Required For Capital Adequacy Purposes, Amount	$ 94,807	$ 92,918
Actual, Ratio (as a percent)	8.90%	8.60%
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	$ 227,746	$ 219,943
To Be Well Capitalized Under Regulatory Requirements, Amount	181,220	175,022
Required For Capital Adequacy Purposes, Amount	$ 156,303	$ 140,018
Actual, Ratio (as a percent)	12.60%	12.60%
To Be Well Capitalized Under Regulatory Requirements, Ratio (as a percent)	10.00%	10.00%
Required For Capital Adequacy Purposes, Ratio (as a percent)	8.625%	8.00%
Capital conservation buffer (as a percent)	0.625%
Tier 1 Capital (to risk-weighted assets)
Actual, Amount	$ 207,070	$ 200,327
To Be Well Capitalized Under Regulatory Requirements, Amount	144,976	140,018
Required For Capital Adequacy Purposes, Amount	$ 120,059	$ 105,013
Actual, Ratio (as a percent)	11.40%	11.40%
To Be Well Capitalized Under Regulatory Requirements, Ratio (as a percent)	8.00%	8.00%
Required For Capital Adequacy Purposes, Ratio (as a percent)	6.625%	6.00%
Common Equity Tier 1 Capital (to risk-weighted assets)
Actual, Amount	$ 207,070	$ 200,327
To Be Well Capitalized Under Regulatory Requirements, Amount	117,793	113,764
Required For Capital Adequacy Purposes, Amount	$ 92,875	$ 78,760
Actual, Ratio (as a percent)	11.40%	11.40%
To Be Well Capitalized Under Regulatory Requirements, Ratio (as a percent)	6.50%	6.50%
Required For Capital Adequacy Purposes, Ratio (as a percent)	5.125%	4.50%
Tier 1 Capital (to average assets)
Actual, Amount	$ 207,070	$ 200,327
To Be Well Capitalized Under Regulatory Requirements, Amount	118,472	116,112
Required For Capital Adequacy Purposes, Amount	$ 94,777	$ 92,889
Actual, Ratio (as a percent)	8.70%	8.60%
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%