Allowance For Loan Losses - Allowance For Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	$ 19,519	$ 21,461	$ 19,697
Charge-Offs	(217)	(1,926)	(1,744)
Recoveries	961	484	308
Provision (benefit)	(1,175)	(500)	3,200
Balance, end of period	19,088	19,519	21,461
Individually evaluated for impairment	17	14	966
Collectively evaluated for impairment	19,071	19,505	20,495
Commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	5,660	6,172	5,535
Charge-Offs	(195)	(1,716)	(1,611)
Recoveries	908	442	293
Provision (benefit)	231	762	1,955
Balance, end of period	6,604	5,660	6,172
Individually evaluated for impairment	17	14	966
Collectively evaluated for impairment	6,587	5,646	5,206
Real estate construction one-to-four family
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	675	629	550
Charge-Offs	0	0	0
Recoveries	0	0	0
Provision (benefit)	(32)	46	79
Balance, end of period	643	675	629
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	643	675	629
Real estate construction other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	1,275	1,566	1,465
Charge-Offs	0	0	0
Recoveries	0		0
Provision (benefit)	(258)	(291)	101
Balance, end of period	1,017	1,275	1,566
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	1,017	1,275	1,566
Real estate term owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	2,027	2,194	2,358
Charge-Offs	0	0	0
Recoveries	0	0	0
Provision (benefit)	161	(167)	(164)
Balance, end of period	2,188	2,027	2,194
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	2,188	2,027	2,194
Real estate term non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	5,799	6,043	6,853
Charge-Offs	0	0	0
Recoveries	0	0	0
Provision (benefit)	(619)	(244)	(810)
Balance, end of period	5,180	5,799	6,043
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	5,180	5,799	6,043
Real estate term other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	716	725	819
Charge-Offs	0	(28)	(5)
Recoveries	28	3	2
Provision (benefit)	(73)	16	(91)
Balance, end of period	671	716	725
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	671	716	725
Consumer secured by 1st deeds of trust
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	306	315	313
Charge-Offs	(4)	(143)	(85)
Recoveries	0	12	2
Provision (benefit)	(32)	122	85
Balance, end of period	270	306	315
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	270	306	315
Consumer other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	426	307	408
Charge-Offs	(18)	(39)	(43)
Recoveries	25	27	11
Provision (benefit)	3	131	(69)
Balance, end of period	436	426	307
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	436	426	307
Unallocated
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance, beginning of period	2,635	3,510	1,396
Charge-Offs	0	0	0
Recoveries	0	0	0
Provision (benefit)	(556)	(875)	2,114
Balance, end of period	2,079	2,635	3,510
Individually evaluated for impairment	0	0	0
Collectively evaluated for impairment	$ 2,079	$ 2,635	$ 3,510