Loans - Nonperforming Loans by Class (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Nonperforming Loans by Class
Nonaccrual loans - held-for-investment	$ 8,675	$ 13,699
Restructured and Loans Over 90 Days Past Due and Still Accruing	1,153	1,188
Total	9,828	14,887
Commercial
Nonperforming Loans by Class
Nonaccrual loans - held-for-investment	3,444	8,279
Restructured and Loans Over 90 Days Past Due and Still Accruing	1,153	963
Total	4,597	9,242
CRE | Commercial
Nonperforming Loans by Class
Nonaccrual loans - held-for-investment		5,094
CRE | Real estate
Nonperforming Loans by Class
Nonaccrual loans - held-for-investment	5,094
Total	5,094	5,094
Home equity | Real estate
Nonperforming Loans by Class
Nonaccrual loans - held-for-investment	137	326
Restructured and Loans Over 90 Days Past Due and Still Accruing		225
Total	$ 137	$ 551