Loans (Non-accrual Loans, Loans Past Due 90 Days And Other Real Estate Owned And Delinquent Loans By Loan Category) (Details) - USD ($) $ in Thousands		Mar. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans		$ 3,621	$ 3,161
Loans past due 90 days or more and still accruing		4,597	461
Total non-performing loans		4,156,261	3,739,171
Other real estate owned		18,873	18,873	$ 0
Total non-performing assets		27,091	22,495
Non-Performing Loans [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-performing loans		8,218	3,622
SBL Non Real Estate [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans		1,639	1,313
Total non-performing loans		122,387	147,722
SBL Non Real Estate [Member] | Non-Accrual Loans [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans		1,639	1,313
SBL Commercial Mortgage [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans		589	812
Total non-performing loans		385,559	361,171
SBL Commercial Mortgage [Member] | Non-Accrual Loans [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans		589	812
SBL Construction [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans		710	710
Total non-performing loans		31,432	27,199
SBL Construction [Member] | Non-Accrual Loans [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans		710	710
Direct Lease Financing [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans		8	254
Total non-performing loans		538,616	531,012
Direct Lease Financing [Member] | Non-Accrual Loans [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans		8	254
Other Loans [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans		607
Total non-performing loans	[1]	61,096	5,014
Other Loans [Member] | Non-Accrual Loans [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans		607
Consumer - Home Equity [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans		68	72
Consumer - Home Equity [Member] | Non-Accrual Loans [Member]
Financing Receivables Past Due and Other Real Estate Owned [Line Items]
Total non-accrual loans		$ 68	$ 72

[1] Includes demand deposit overdrafts reclassified as loan balances totaling $310,000 and $322,000 at March 31, 2022 and December 31, 2021, respectively. Estimated overdraft charge-offs and recoveries are reflected in the allowance for credit losses and have been immaterial.