Loans by Type (Schedule of Recorded Investment and Unpaid Principal for Impaired Loans) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Participating Mortgage Loans [Line Items]
Nonaccrual	$ 215	$ 245
Recorded Investment [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual	215	245
Upaid Principal Balance [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual	215	245
Related Allowance for Loan Losses [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual
Commercial and Industrial [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual
Commercial and Industrial [Member] | Recorded Investment [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual
Commercial and Industrial [Member] | Upaid Principal Balance [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual
Commercial and Industrial [Member] | Related Allowance for Loan Losses [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual
Real Estate Commercial Mortgage [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual	215	245
Real Estate Commercial Mortgage [Member] | Recorded Investment [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual	215	245
Real Estate Commercial Mortgage [Member] | Upaid Principal Balance [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual	215	245
Real Estate Commercial Mortgage [Member] | Related Allowance for Loan Losses [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual
Real Estate Church Related Mortgage [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual
Real Estate Church Related Mortgage [Member] | Recorded Investment [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual
Real Estate Church Related Mortgage [Member] | Upaid Principal Balance [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual
Real Estate Church Related Mortgage [Member] | Related Allowance for Loan Losses [Member]
Participating Mortgage Loans [Line Items]
Nonaccrual