Loans - Receivables Past Due (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	$ 4,626	$ 1,987
90 Days Past Due and Still Accruing	361	72
Non- Accrual Loans	1,944	1,090
Current	1,826,189	1,355,489
Total Loans	1,830,815	1,357,476
Commercial
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	1,397	103
90 Days Past Due and Still Accruing	52	0
Non- Accrual Loans	857	83
Current	337,680	285,869
Total Loans	339,077	285,972
Commercial Real Estate
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Loans	1,037,119	753,040
Commercial Real Estate | Construction and land development
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	69	27
90 Days Past Due and Still Accruing	0	0
Non- Accrual Loans	11	27
Current	137,851	97,213
Total Loans	137,920	97,240
Commercial Real Estate | Real estate
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	925	239
90 Days Past Due and Still Accruing	0	0
Non- Accrual Loans	274	197
Current	898,274	655,561
Total Loans	899,199	655,800
Residential Real Estate
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Loans	443,738	313,371
Residential Real Estate | Real estate
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	1,866	1,344
90 Days Past Due and Still Accruing	282	72
Non- Accrual Loans	685	659
Current	322,449	208,094
Total Loans	324,315	209,438
Residential Real Estate | Home equity
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	279	250
90 Days Past Due and Still Accruing	27	0
Non- Accrual Loans	113	124
Current	119,144	103,683
Total Loans	119,423	103,933
Consumer
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	90	24
90 Days Past Due and Still Accruing	0	0
Non- Accrual Loans	4	0
Current	10,791	5,069
Total Loans	10,881	5,093
30- 59 Days Past Due
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	1,361	665
30- 59 Days Past Due | Commercial
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	325	20
30- 59 Days Past Due | Commercial Real Estate | Construction and land development
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	58	0
30- 59 Days Past Due | Commercial Real Estate | Real estate
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	217	42
30- 59 Days Past Due | Residential Real Estate | Real estate
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	639	456
30- 59 Days Past Due | Residential Real Estate | Home equity
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	49	126
30- 59 Days Past Due | Consumer
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	73	21
60-89 Days Past Due
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	960	160
60-89 Days Past Due | Commercial
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	163	0
60-89 Days Past Due | Commercial Real Estate | Construction and land development
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	0	0
60-89 Days Past Due | Commercial Real Estate | Real estate
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	434	0
60-89 Days Past Due | Residential Real Estate | Real estate
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	260	157
60-89 Days Past Due | Residential Real Estate | Home equity
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	90	0
60-89 Days Past Due | Consumer
Analysis by portfolio segment of the entity's past due loans [Abstract]
Total Past Due	$ 13	$ 3