Loans - Collateral Dependent Loans by Collateral Type (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Other information concerning the credit quality
Nonaccrual loans	$ 29,209	$ 8,500
Office Properties
Other information concerning the credit quality
Nonaccrual loans	288
Industrial Properties
Other information concerning the credit quality
Nonaccrual loans	1,536
Retail Properties
Other information concerning the credit quality
Nonaccrual loans	2,594
Land Properties
Other information concerning the credit quality
Nonaccrual loans	5,304
Hotel Properties
Other information concerning the credit quality
Nonaccrual loans	1,455
Residential Properties
Other information concerning the credit quality
Nonaccrual loans	113
Business Assets
Other information concerning the credit quality
Nonaccrual loans	2,747
Collateral Dependent Loans
Other information concerning the credit quality
Nonaccrual loans	14,037
Investor loans secured by real estate
Other information concerning the credit quality
Nonaccrual loans	4,049
Investor loans secured by real estate | Office Properties
Other information concerning the credit quality
Nonaccrual loans	0
Investor loans secured by real estate | Industrial Properties
Other information concerning the credit quality
Nonaccrual loans	0
Investor loans secured by real estate | Retail Properties
Other information concerning the credit quality
Nonaccrual loans	2,594
Investor loans secured by real estate | Land Properties
Other information concerning the credit quality
Nonaccrual loans	0
Investor loans secured by real estate | Hotel Properties
Other information concerning the credit quality
Nonaccrual loans	1,455
Investor loans secured by real estate | Residential Properties
Other information concerning the credit quality
Nonaccrual loans	0
Investor loans secured by real estate | Business Assets
Other information concerning the credit quality
Nonaccrual loans	0
Investor loans secured by real estate | Collateral Dependent Loans
Other information concerning the credit quality
Nonaccrual loans	4,049
Investor loans secured by real estate | CRE non-owner-occupied
Other information concerning the credit quality
Nonaccrual loans	2,792
Investor loans secured by real estate | CRE non-owner-occupied | Office Properties
Other information concerning the credit quality
Nonaccrual loans	0
Investor loans secured by real estate | CRE non-owner-occupied | Industrial Properties
Other information concerning the credit quality
Nonaccrual loans	0
Investor loans secured by real estate | CRE non-owner-occupied | Retail Properties
Other information concerning the credit quality
Nonaccrual loans	2,594
Investor loans secured by real estate | CRE non-owner-occupied | Land Properties
Other information concerning the credit quality
Nonaccrual loans	0
Investor loans secured by real estate | CRE non-owner-occupied | Hotel Properties
Other information concerning the credit quality
Nonaccrual loans	198
Investor loans secured by real estate | CRE non-owner-occupied | Residential Properties
Other information concerning the credit quality
Nonaccrual loans	0
Investor loans secured by real estate | CRE non-owner-occupied | Business Assets
Other information concerning the credit quality
Nonaccrual loans	0
Investor loans secured by real estate | CRE non-owner-occupied | Collateral Dependent Loans
Other information concerning the credit quality
Nonaccrual loans	2,792
Investor loans secured by real estate | SBA secured by real estate
Other information concerning the credit quality
Nonaccrual loans	1,257
Investor loans secured by real estate | SBA secured by real estate | Office Properties
Other information concerning the credit quality
Nonaccrual loans	0
Investor loans secured by real estate | SBA secured by real estate | Industrial Properties
Other information concerning the credit quality
Nonaccrual loans	0
Investor loans secured by real estate | SBA secured by real estate | Retail Properties
Other information concerning the credit quality
Nonaccrual loans	0
Investor loans secured by real estate | SBA secured by real estate | Land Properties
Other information concerning the credit quality
Nonaccrual loans	0
Investor loans secured by real estate | SBA secured by real estate | Hotel Properties
Other information concerning the credit quality
Nonaccrual loans	1,257
Investor loans secured by real estate | SBA secured by real estate | Residential Properties
Other information concerning the credit quality
Nonaccrual loans	0
Investor loans secured by real estate | SBA secured by real estate | Business Assets
Other information concerning the credit quality
Nonaccrual loans	0
Investor loans secured by real estate | SBA secured by real estate | Collateral Dependent Loans
Other information concerning the credit quality
Nonaccrual loans	1,257
Business loans secured by real estate
Other information concerning the credit quality
Nonaccrual loans	7,226
Business loans secured by real estate | Office Properties
Other information concerning the credit quality
Nonaccrual loans	288
Business loans secured by real estate | Industrial Properties
Other information concerning the credit quality
Nonaccrual loans	1,536
Business loans secured by real estate | Retail Properties
Other information concerning the credit quality
Nonaccrual loans	0
Business loans secured by real estate | Land Properties
Other information concerning the credit quality
Nonaccrual loans	5,304
Business loans secured by real estate | Hotel Properties
Other information concerning the credit quality
Nonaccrual loans	0
Business loans secured by real estate | Residential Properties
Other information concerning the credit quality
Nonaccrual loans	98
Business loans secured by real estate | Business Assets
Other information concerning the credit quality
Nonaccrual loans	0
Business loans secured by real estate | Collateral Dependent Loans
Other information concerning the credit quality
Nonaccrual loans	7,226
Business loans secured by real estate | SBA secured by real estate
Other information concerning the credit quality
Nonaccrual loans	1,143
Business loans secured by real estate | SBA secured by real estate | Office Properties
Other information concerning the credit quality
Nonaccrual loans	288
Business loans secured by real estate | SBA secured by real estate | Industrial Properties
Other information concerning the credit quality
Nonaccrual loans	757
Business loans secured by real estate | SBA secured by real estate | Retail Properties
Other information concerning the credit quality
Nonaccrual loans	0
Business loans secured by real estate | SBA secured by real estate | Land Properties
Other information concerning the credit quality
Nonaccrual loans	0
Business loans secured by real estate | SBA secured by real estate | Hotel Properties
Other information concerning the credit quality
Nonaccrual loans	0
Business loans secured by real estate | SBA secured by real estate | Residential Properties
Other information concerning the credit quality
Nonaccrual loans	98
Business loans secured by real estate | SBA secured by real estate | Business Assets
Other information concerning the credit quality
Nonaccrual loans	0
Business loans secured by real estate | SBA secured by real estate | Collateral Dependent Loans
Other information concerning the credit quality
Nonaccrual loans	1,143
Business loans secured by real estate | CRE owner-occupied
Other information concerning the credit quality
Nonaccrual loans	6,083
Business loans secured by real estate | CRE owner-occupied | Office Properties
Other information concerning the credit quality
Nonaccrual loans	0
Business loans secured by real estate | CRE owner-occupied | Industrial Properties
Other information concerning the credit quality
Nonaccrual loans	779
Business loans secured by real estate | CRE owner-occupied | Retail Properties
Other information concerning the credit quality
Nonaccrual loans	0
Business loans secured by real estate | CRE owner-occupied | Land Properties
Other information concerning the credit quality
Nonaccrual loans	5,304
Business loans secured by real estate | CRE owner-occupied | Hotel Properties
Other information concerning the credit quality
Nonaccrual loans	0
Business loans secured by real estate | CRE owner-occupied | Residential Properties
Other information concerning the credit quality
Nonaccrual loans	0
Business loans secured by real estate | CRE owner-occupied | Business Assets
Other information concerning the credit quality
Nonaccrual loans	0
Business loans secured by real estate | CRE owner-occupied | Collateral Dependent Loans
Other information concerning the credit quality
Nonaccrual loans	6,083
Commercial loans
Other information concerning the credit quality
Nonaccrual loans	17,919
Commercial loans | Office Properties
Other information concerning the credit quality
Nonaccrual loans	0
Commercial loans | Industrial Properties
Other information concerning the credit quality
Nonaccrual loans	0
Commercial loans | Retail Properties
Other information concerning the credit quality
Nonaccrual loans	0
Commercial loans | Land Properties
Other information concerning the credit quality
Nonaccrual loans	0
Commercial loans | Hotel Properties
Other information concerning the credit quality
Nonaccrual loans	0
Commercial loans | Residential Properties
Other information concerning the credit quality
Nonaccrual loans	0
Commercial loans | Business Assets
Other information concerning the credit quality
Nonaccrual loans	2,747
Commercial loans | Collateral Dependent Loans
Other information concerning the credit quality
Nonaccrual loans	2,747
Commercial loans | Commercial and industrial
Other information concerning the credit quality
Nonaccrual loans	3,974
Commercial loans | Commercial and industrial | Office Properties
Other information concerning the credit quality
Nonaccrual loans	0
Commercial loans | Commercial and industrial | Industrial Properties
Other information concerning the credit quality
Nonaccrual loans	0
Commercial loans | Commercial and industrial | Retail Properties
Other information concerning the credit quality
Nonaccrual loans	0
Commercial loans | Commercial and industrial | Land Properties
Other information concerning the credit quality
Nonaccrual loans	0
Commercial loans | Commercial and industrial | Hotel Properties
Other information concerning the credit quality
Nonaccrual loans	0
Commercial loans | Commercial and industrial | Residential Properties
Other information concerning the credit quality
Nonaccrual loans	0
Commercial loans | Commercial and industrial | Business Assets
Other information concerning the credit quality
Nonaccrual loans	2,040
Commercial loans | Commercial and industrial | Collateral Dependent Loans
Other information concerning the credit quality
Nonaccrual loans	2,040
Commercial loans | SBA non-real estate secured
Other information concerning the credit quality
Nonaccrual loans	707
Commercial loans | SBA non-real estate secured | Office Properties
Other information concerning the credit quality
Nonaccrual loans	0
Commercial loans | SBA non-real estate secured | Industrial Properties
Other information concerning the credit quality
Nonaccrual loans	0
Commercial loans | SBA non-real estate secured | Retail Properties
Other information concerning the credit quality
Nonaccrual loans	0
Commercial loans | SBA non-real estate secured | Land Properties
Other information concerning the credit quality
Nonaccrual loans	0
Commercial loans | SBA non-real estate secured | Hotel Properties
Other information concerning the credit quality
Nonaccrual loans	0
Commercial loans | SBA non-real estate secured | Residential Properties
Other information concerning the credit quality
Nonaccrual loans	0
Commercial loans | SBA non-real estate secured | Business Assets
Other information concerning the credit quality
Nonaccrual loans	707
Commercial loans | SBA non-real estate secured | Collateral Dependent Loans
Other information concerning the credit quality
Nonaccrual loans	707
Retail loans
Other information concerning the credit quality
Nonaccrual loans	15
Retail loans | Office Properties
Other information concerning the credit quality
Nonaccrual loans	0
Retail loans | Industrial Properties
Other information concerning the credit quality
Nonaccrual loans	0
Retail loans | Retail Properties
Other information concerning the credit quality
Nonaccrual loans	0
Retail loans | Land Properties
Other information concerning the credit quality
Nonaccrual loans	0
Retail loans | Hotel Properties
Other information concerning the credit quality
Nonaccrual loans	0
Retail loans | Residential Properties
Other information concerning the credit quality
Nonaccrual loans	15
Retail loans | Business Assets
Other information concerning the credit quality
Nonaccrual loans	0
Retail loans | Collateral Dependent Loans
Other information concerning the credit quality
Nonaccrual loans	15
Retail loans | Single family residential
Other information concerning the credit quality
Nonaccrual loans	15
Retail loans | Single family residential | Office Properties
Other information concerning the credit quality
Nonaccrual loans	0
Retail loans | Single family residential | Industrial Properties
Other information concerning the credit quality
Nonaccrual loans	0
Retail loans | Single family residential | Retail Properties
Other information concerning the credit quality
Nonaccrual loans	0
Retail loans | Single family residential | Land Properties
Other information concerning the credit quality
Nonaccrual loans	0
Retail loans | Single family residential | Hotel Properties
Other information concerning the credit quality
Nonaccrual loans	0
Retail loans | Single family residential | Residential Properties
Other information concerning the credit quality
Nonaccrual loans	15
Retail loans | Single family residential | Business Assets
Other information concerning the credit quality
Nonaccrual loans	0
Retail loans | Single family residential | Collateral Dependent Loans
Other information concerning the credit quality
Nonaccrual loans	$ 15