Loans (Delinquent Loans By Loan Category) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	$ 5,796	$ 4,516
Total past due	16,269	11,396
Current	1,807,976	1,490,580
Total loans, net of unamortized loan fees and costs	1,824,245	1,501,976
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,334	3,535
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	4,875	2,391
90 Days or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3,264	954
SBL Non Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	3,693	2,590
Total past due	3,854	3,061
Current	80,725	73,279
Total loans, net of unamortized loan fees and costs	84,579	76,340
SBL Non Real Estate [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	36	346
SBL Non Real Estate [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	125	125
SBL Commercial Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	1,047	458
Total past due	3,030	458
Current	215,080	164,948
Total loans, net of unamortized loan fees and costs	218,110	165,406
SBL Commercial Mortgage [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,983
SBL Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	711
Total past due	711	694
Current	44,599	20,942
Total loans, net of unamortized loan fees and costs	45,310	21,636
SBL Construction [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		694
Direct Lease Financing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	7,964	5,120
Current	426,496	389,650
Total loans, net of unamortized loan fees and costs	434,460	394,770
Direct Lease Financing [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,008	2,594
Direct Lease Financing [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,692	1,572
Direct Lease Financing [Member] | 90 Days or Greater [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3,264	954
SBLOC/IBLOC [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	365	487
Current	1,024,055	784,816
Total loans, net of unamortized loan fees and costs	1,024,420	785,303
SBLOC/IBLOC [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	290	487
SBLOC/IBLOC [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	75
Other Specialty Lending [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		108
Current	3,055	31,728
Total loans, net of unamortized loan fees and costs	3,055	31,836
Other Specialty Lending [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		108
Consumer - Other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	1,137	9,147
Total loans, net of unamortized loan fees and costs	1,137	9,147
Consumer - Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	345	1,468
Total past due	345	1,468
Current	3,072	5,687
Total loans, net of unamortized loan fees and costs	3,417	7,155
Unamortized Loan Fees And Costs [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	9,757	10,383
Total loans, net of unamortized loan fees and costs	$ 9,757	$ 10,383