Loans by Type (Schedule of the Aging of Loans by Loan Categories) (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Participating Mortgage Loans [Line Items]
Nonaccrual
Loans	871,020	891,676
Commercial and Industrial [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual
Loans	330,714	298,984
Real Estate Commercial Mortgage [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual
Loans	103,878	100,419
Real Estate Commercial Construction [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual
Loans	24,500	25,090
Real Estate Faith-based Mortgage [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual
Loans	331,235	333,661
Real Estate Faith-based Construction [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual
Loans	24,051	23,818
Paycheck protection program ("PPP") [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual
Loans	56,642	109,704
Current [Member]
Participating Mortgage Loans [Line Items]
Gross	871,020	891,676
Current [Member] | Commercial and Industrial [Member]
Participating Mortgage Loans [Line Items]
Gross	330,714	298,984
Current [Member] | Real Estate Commercial Mortgage [Member]
Participating Mortgage Loans [Line Items]
Gross	103,878	100,419
Current [Member] | Real Estate Commercial Construction [Member]
Participating Mortgage Loans [Line Items]
Gross	24,500	25,090
Current [Member] | Real Estate Faith-based Mortgage [Member]
Participating Mortgage Loans [Line Items]
Gross	331,235	333,661
Current [Member] | Real Estate Faith-based Construction [Member]
Participating Mortgage Loans [Line Items]
Gross	24,051	23,818
30 to 59 Days Past Due [Member]
Participating Mortgage Loans [Line Items]
Gross
30 to 59 Days Past Due [Member] | Commercial and Industrial [Member]
Participating Mortgage Loans [Line Items]
Gross
30 to 59 Days Past Due [Member] | Real Estate Commercial Mortgage [Member]
Participating Mortgage Loans [Line Items]
Gross
30 to 59 Days Past Due [Member] | Real Estate Commercial Construction [Member]
Participating Mortgage Loans [Line Items]
Gross
30 to 59 Days Past Due [Member] | Real Estate Faith-based Mortgage [Member]
Participating Mortgage Loans [Line Items]
Gross
30 to 59 Days Past Due [Member] | Real Estate Faith-based Construction [Member]
Participating Mortgage Loans [Line Items]
Gross
30 to 59 Days Past Due [Member] | Paycheck protection program ("PPP") [Member]
Participating Mortgage Loans [Line Items]
Gross
60 to 89 Days Past Due [Member]
Participating Mortgage Loans [Line Items]
Gross
60 to 89 Days Past Due [Member] | Commercial and Industrial [Member]
Participating Mortgage Loans [Line Items]
Gross
60 to 89 Days Past Due [Member] | Real Estate Commercial Mortgage [Member]
Participating Mortgage Loans [Line Items]
Gross
60 to 89 Days Past Due [Member] | Real Estate Commercial Construction [Member]
Participating Mortgage Loans [Line Items]
Gross
60 to 89 Days Past Due [Member] | Real Estate Faith-based Mortgage [Member]
Participating Mortgage Loans [Line Items]
Gross
60 to 89 Days Past Due [Member] | Real Estate Faith-based Construction [Member]
Participating Mortgage Loans [Line Items]
Gross
60 to 89 Days Past Due [Member] | Paycheck protection program ("PPP") [Member]
Participating Mortgage Loans [Line Items]
Gross
90 Days and Over [Member]
Participating Mortgage Loans [Line Items]
Gross
90 Days and Over [Member] | Commercial and Industrial [Member]
Participating Mortgage Loans [Line Items]
Gross
90 Days and Over [Member] | Real Estate Commercial Mortgage [Member]
Participating Mortgage Loans [Line Items]
Gross
90 Days and Over [Member] | Real Estate Commercial Construction [Member]
Participating Mortgage Loans [Line Items]
Gross
90 Days and Over [Member] | Real Estate Faith-based Mortgage [Member]
Participating Mortgage Loans [Line Items]
Gross
90 Days and Over [Member] | Real Estate Faith-based Construction [Member]
Participating Mortgage Loans [Line Items]
Gross
90 Days and Over [Member] | Paycheck protection program ("PPP") [Member]
Participating Mortgage Loans [Line Items]
Gross
Current [Member] | Paycheck protection program ("PPP") [Member]
Participating Mortgage Loans [Line Items]
Gross	$ 56,642	$ 109,704