Loans (Non-accrual Loans, Loans Past Due 90 Days And Other Real Estate Owned And Delinquent Loans By Loan Category) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans	$ 5,796	$ 4,516
Loans past due 90 days or more and still accruing	3,264	954
Total non-performing loans	1,814,488	1,491,593
Total non-performing assets	9,060	5,470
Non-Performing Loans [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-performing loans	9,060	5,470
SBL Non Real Estate [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans	3,693	2,590
Total non-performing loans	84,579	76,340
SBL Commercial Mortgage [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans	1,047	458
Total non-performing loans	218,110	165,406
SBL Construction [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans	711
Consumer [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans	$ 345	$ 1,468