Loans and Allowance for Loan Losses - ALL Roll Forward (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 16,254	$ 9,097	$ 10,243	$ 8,275
Charged off loans	(170)	(107)	(331)	(652)
Recoveries of charge-offs	99	78	222	255
Provision (reallocation) charged to expense	2,634	724	8,683	1,914
Ending balance	18,817	9,792	18,817	9,792
Commercial Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,595	4,102	4,508	3,639
Charged off loans	0	(36)	0	(36)
Recoveries of charge-offs	11	39	16	63
Provision (reallocation) charged to expense	1,123	155	3,205	594
Ending balance	7,729	4,260	7,729	4,260
Consumer Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	3,313	2,189	2,576	1,789
Charged off loans	(21)	(1)	(23)	(3)
Recoveries of charge-offs	17	17	34	37
Provision (reallocation) charged to expense	135	65	857	447
Ending balance	3,444	2,270	3,444	2,270
Construction and Land Development [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,795	946	1,127	795
Charged off loans	0	0	0	0
Recoveries of charge-offs	0	3	2	7
Provision (reallocation) charged to expense	265	94	931	241
Ending balance	2,060	1,043	2,060	1,043
Commercial and Industrial [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	4,443	1,746	1,957	1,746
Charged off loans	(60)	(20)	(77)	(353)
Recoveries of charge-offs	55	12	103	66
Provision (reallocation) charged to expense	1,025	410	3,480	689
Ending balance	5,463	2,148	5,463	2,148
Consumer and Other [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	108	114	75	306
Charged off loans	(89)	(50)	(231)	(260)
Recoveries of charge-offs	16	7	67	82
Provision (reallocation) charged to expense	86	0	210	(57)
Ending balance	$ 121	$ 71	$ 121	$ 71