Loans, Allowance for Credit Losses and Impaired Loans - Aging (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Past due financing receivables
Total Past Due	$ 5,683	$ 10,480
Current Balance	628,646	623,423
Total Financing Receivables	634,329	633,903
Recorded Investment >90 Days Past Due and Accruing		606
Non-accrual loans	5,127	9,148
Unamortized discounts on acquired loans	668	1,327
Other real estate secured
Past due financing receivables
Total Past Due	2,574	5,747
Current Balance	423,163	420,474
Total Financing Receivables	425,737	426,221
Recorded Investment >90 Days Past Due and Accruing		338
Non-accrual loans	2,806	4,423
1 - 4 Family residential secured
Past due financing receivables
Total Past Due	2,931	3,397
Current Balance	140,349	142,906
Total Financing Receivables	143,280	146,303
Non-accrual loans	2,107	4,547
Other
Past due financing receivables
Total Past Due	178	1,336
Current Balance	65,134	60,043
Total Financing Receivables	65,312	61,379
Recorded Investment >90 Days Past Due and Accruing		268
Non-accrual loans	214	178
30-59 Days Past Due
Past due financing receivables
Total Past Due	2,423	3,203
Non-accrual loans	1,200
30-59 Days Past Due | Other real estate secured
Past due financing receivables
Total Past Due	569	876
30-59 Days Past Due | 1 - 4 Family residential secured
Past due financing receivables
Total Past Due	1,696	1,292
30-59 Days Past Due | Other
Past due financing receivables
Total Past Due	158	1,035
60-89 Days Past Due
Past due financing receivables
Total Past Due	639	2,158
Non-accrual loans	117
60-89 Days Past Due | Other real estate secured
Past due financing receivables
Total Past Due		1,742
60-89 Days Past Due | 1 - 4 Family residential secured
Past due financing receivables
Total Past Due	619	383
60-89 Days Past Due | Other
Past due financing receivables
Total Past Due	20	33
Greater than 90 Days Past Due
Past due financing receivables
Total Past Due	2,621	5,119
Non-accrual loans	2,600	4,500
Greater than 90 Days Past Due | Other real estate secured
Past due financing receivables
Total Past Due	2,005	3,129
Greater than 90 Days Past Due | 1 - 4 Family residential secured
Past due financing receivables
Total Past Due	$ 616	1,722
Greater than 90 Days Past Due | Other
Past due financing receivables
Total Past Due		$ 268