Loans (Delinquent Loans By Loan Category) (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	$ 9,957	$ 5,796
Total past due	20,612	16,269
Current	2,302,125	1,807,976
Total loans, net of unamortized loan fees and costs	2,322,737	1,824,245	$ 1,561,451
30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	6,655	2,334
60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3,648	4,875
90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	352	3,264
SBL Non Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	3,047	3,693
Total past due	7,519	3,854
Current	286,173	80,725
Total loans, net of unamortized loan fees and costs	293,692	84,579	75,475
SBL Non Real Estate [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,376	36
SBL Non Real Estate [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,749	125
SBL Non Real Estate [Member] | 90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	347
SBL Commercial Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	3,007	1,047
Total past due	6,956	3,030
Current	252,064	215,080
Total loans, net of unamortized loan fees and costs	259,020	218,110	189,427
SBL Commercial Mortgage [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3,638
SBL Commercial Mortgage [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	311	1,983
SBL Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	711	711
Total past due	711	711
Current	32,482	44,599
Total loans, net of unamortized loan fees and costs	33,193	45,310	29,298
Direct Lease Financing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	2,879
Total past due	3,952	7,964
Current	418,553	426,496
Total loans, net of unamortized loan fees and costs	422,505	434,460	407,907
Direct Lease Financing [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	534	2,008
Direct Lease Financing [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	534	2,692
Direct Lease Financing [Member] | 90+ Days Still Accruing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	5	3,264
SBLOC/IBLOC [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,161	365
Current	1,286,189	1,024,055
Total loans, net of unamortized loan fees and costs	1,287,350	1,024,420	837,672
SBLOC/IBLOC [Member] | 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	107	290
SBLOC/IBLOC [Member] | 60 to 89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,054	75
Advisor Financing [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	15,529
Total loans, net of unamortized loan fees and costs	15,529
Other Specialty Lending [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	2,706	3,055
Total loans, net of unamortized loan fees and costs	2,706	3,055	$ 3,432
Consumer - other [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	313	345
Current	761	1,137
Total loans, net of unamortized loan fees and costs	761	1,137
Consumer - Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-accrual	313	345
Total past due	313	345
Current	2,929	3,072
Total loans, net of unamortized loan fees and costs	3,242	3,417
Unamortized Loan Fees And Costs [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	4,739	9,757
Total loans, net of unamortized loan fees and costs	$ 4,739	$ 9,757