Loans (Summary Of Gross Loans Held For Investment By Year Of Origination And Internally Assigned Credit Grade) (Details) - USD ($) $ in Thousands		Sep. 30, 2021		Dec. 31, 2020		Sep. 30, 2020
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		$ 543,530		$ 560,217
Fiscal Year Before Latest Fiscal Year		324,111		190,332
Two Years Before Latest Fiscal Year		165,735		132,082
Three Years Before Latest Fiscal Year		99,589		78,685
Four Years Before Latest Fiscal Year		62,382		59,594
Prior		93,683		72,388
Revolving loans at amortized cost		1,836,554		1,550,086
Financing Receivable, before Allowance for Credit Loss, Total		3,125,584		2,643,384
Unamortized loan fees and costs		11,078		8,939
Total loans, net of unamortized loan fees and costs	[1]	3,136,662		2,652,323		$ 2,488,760
SBL Non Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		88,137		181,685
Fiscal Year Before Latest Fiscal Year		26,276		10,943
Two Years Before Latest Fiscal Year		9,180		12,753
Three Years Before Latest Fiscal Year		10,268		6,943
Four Years Before Latest Fiscal Year		6,108		8,999
Prior		15,089		12,222
Financing Receivable, before Allowance for Credit Loss, Total		155,058		233,545
Total loans, net of unamortized loan fees and costs	[1]	171,845		255,318		293,488
SBL Commercial Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		71,975		44,563
Fiscal Year Before Latest Fiscal Year		55,850		81,585
Two Years Before Latest Fiscal Year		84,283		46,099
Three Years Before Latest Fiscal Year		46,916		39,219
Four Years Before Latest Fiscal Year		38,465		32,582
Prior		61,593		43,160
Financing Receivable, before Allowance for Credit Loss, Total		359,082		287,208
Total loans, net of unamortized loan fees and costs	[1]	367,272		300,817		270,264
SBL Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		3,194		7,335
Fiscal Year Before Latest Fiscal Year		13,958		1,146
Two Years Before Latest Fiscal Year		1,411		11,081
Three Years Before Latest Fiscal Year		3,844
Four Years Before Latest Fiscal Year				711
Prior		711
Financing Receivable, before Allowance for Credit Loss, Total		23,118		20,273
Total loans, net of unamortized loan fees and costs	[1]	23,117		20,273		27,169
Direct Lease Financing [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		214,697		276,755
Fiscal Year Before Latest Fiscal Year		182,871		93,089
Two Years Before Latest Fiscal Year		67,538		55,924
Three Years Before Latest Fiscal Year		33,741		25,189
Four Years Before Latest Fiscal Year		12,125		10,074
Prior		3,096		1,151
Financing Receivable, before Allowance for Credit Loss, Total		514,068		462,182
Total loans, net of unamortized loan fees and costs	[1]	514,068		462,182		430,675
SBLOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Revolving loans at amortized cost		1,147,756		1,112,933
Financing Receivable, before Allowance for Credit Loss, Total		1,147,756		1,112,933
IBLOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Revolving loans at amortized cost		686,767		437,153
Financing Receivable, before Allowance for Credit Loss, Total		686,767		437,153
Advisor Financing [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		36,299		48,282
Fiscal Year Before Latest Fiscal Year		44,844
Financing Receivable, before Allowance for Credit Loss, Total		81,143		48,282
Total loans, net of unamortized loan fees and costs	[1]	81,143		48,282		26,600
Real Estate Bridge Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		128,699
Financing Receivable, before Allowance for Credit Loss, Total		128,699
Total loans, net of unamortized loan fees and costs	[1]	128,699
Other Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		529	[2]	1,597	[3]
Fiscal Year Before Latest Fiscal Year		312	[2]	3,569	[3]
Two Years Before Latest Fiscal Year		3,323	[2]	6,225	[3]
Three Years Before Latest Fiscal Year		4,820	[2]	7,334	[3]
Four Years Before Latest Fiscal Year		5,684	[2]	7,228	[3]
Prior		13,194	[2]	15,855	[3]
Revolving loans at amortized cost	[2]	2,031
Financing Receivable, before Allowance for Credit Loss, Total		29,893	[2]	41,808	[3]
Total loans, net of unamortized loan fees and costs	[1]	4,917		6,426		$ 6,003
SBA Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, before Allowance for Credit Loss, Total		75,100		170,900
SBA Loan PPP [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, before Allowance for Credit Loss, Total		71,300		165,700
SBL CRA [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, before Allowance for Credit Loss, Total		25,000		35,400
Non-Rated [Member] | SBL Non Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		66,244	[4]	170,910	[5]
Fiscal Year Before Latest Fiscal Year	[4]	8,844
Financing Receivable, before Allowance for Credit Loss, Total		75,088	[4]	170,910	[5]
Non-Rated [Member] | SBL Commercial Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		9,707		17,592
Fiscal Year Before Latest Fiscal Year				2,758
Two Years Before Latest Fiscal Year		4,500
Financing Receivable, before Allowance for Credit Loss, Total		14,207		20,350
Non-Rated [Member] | SBL Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year				566
Financing Receivable, before Allowance for Credit Loss, Total				566
Non-Rated [Member] | Direct Lease Financing [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		44,973		23,273
Fiscal Year Before Latest Fiscal Year		14,486		2,888
Two Years Before Latest Fiscal Year		2,088		2,189
Three Years Before Latest Fiscal Year		1,291		1,093
Four Years Before Latest Fiscal Year		474		447
Prior		126		7
Financing Receivable, before Allowance for Credit Loss, Total		63,438		29,897
Non-Rated [Member] | SBLOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Revolving loans at amortized cost		4,465		3,772
Financing Receivable, before Allowance for Credit Loss, Total		4,465		3,772
Non-Rated [Member] | IBLOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Revolving loans at amortized cost		277,567		132,777
Financing Receivable, before Allowance for Credit Loss, Total		277,567		132,777
Non-Rated [Member] | Advisor Financing [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		1,847		22,341
Fiscal Year Before Latest Fiscal Year		264
Financing Receivable, before Allowance for Credit Loss, Total		2,111		22,341
Non-Rated [Member] | Other Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		428		1,221
Fiscal Year Before Latest Fiscal Year		184
Three Years Before Latest Fiscal Year				14
Four Years Before Latest Fiscal Year		4
Prior		217		1,558
Revolving loans at amortized cost		677
Financing Receivable, before Allowance for Credit Loss, Total		1,510		2,793
Pass [Member] | SBL Non Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		21,814		10,775
Fiscal Year Before Latest Fiscal Year		17,432		10,943
Two Years Before Latest Fiscal Year		9,180		12,002
Three Years Before Latest Fiscal Year		9,563		5,454
Four Years Before Latest Fiscal Year		5,534		7,153
Prior		12,934		9,964
Financing Receivable, before Allowance for Credit Loss, Total		76,457		56,291
Pass [Member] | SBL Commercial Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		62,268		26,971
Fiscal Year Before Latest Fiscal Year		55,850		76,975
Two Years Before Latest Fiscal Year		77,930		46,099
Three Years Before Latest Fiscal Year		46,916		39,219
Four Years Before Latest Fiscal Year		38,465		32,505
Prior		58,177		35,298
Financing Receivable, before Allowance for Credit Loss, Total		339,606		257,067
Pass [Member] | SBL Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		3,194		6,769
Fiscal Year Before Latest Fiscal Year		13,958		1,146
Two Years Before Latest Fiscal Year		1,411		11,081
Three Years Before Latest Fiscal Year		3,844
Financing Receivable, before Allowance for Credit Loss, Total		22,407		18,996
Pass [Member] | Direct Lease Financing [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		168,932		249,946
Fiscal Year Before Latest Fiscal Year		166,215		90,156
Two Years Before Latest Fiscal Year		65,411		53,638
Three Years Before Latest Fiscal Year		32,392		23,944
Four Years Before Latest Fiscal Year		11,573		9,091
Prior		2,956		1,106
Financing Receivable, before Allowance for Credit Loss, Total		447,479		427,881
Pass [Member] | SBLOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Revolving loans at amortized cost		1,143,291		1,109,161
Financing Receivable, before Allowance for Credit Loss, Total		1,143,291		1,109,161
Pass [Member] | IBLOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Revolving loans at amortized cost		409,200		304,376
Financing Receivable, before Allowance for Credit Loss, Total		409,200		304,376
Pass [Member] | Advisor Financing [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		34,452		25,941
Fiscal Year Before Latest Fiscal Year		44,580
Financing Receivable, before Allowance for Credit Loss, Total		79,032		25,941
Pass [Member] | Real Estate Bridge Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		128,699
Financing Receivable, before Allowance for Credit Loss, Total		128,699
Pass [Member] | Other Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		101		376
Fiscal Year Before Latest Fiscal Year		114		3,569
Two Years Before Latest Fiscal Year		3,323		6,225
Three Years Before Latest Fiscal Year		4,820		7,320
Four Years Before Latest Fiscal Year		5,632		7,228
Prior		12,977		13,996
Revolving loans at amortized cost		1,278
Financing Receivable, before Allowance for Credit Loss, Total		28,245		38,714
Special Mention [Member] | SBL Non Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		79
Two Years Before Latest Fiscal Year				731
Three Years Before Latest Fiscal Year		687
Four Years Before Latest Fiscal Year				499
Prior		873		767
Financing Receivable, before Allowance for Credit Loss, Total		1,639		1,997
Special Mention [Member] | SBL Commercial Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Fiscal Year Before Latest Fiscal Year				1,852
Two Years Before Latest Fiscal Year		1,853
Prior		249		257
Financing Receivable, before Allowance for Credit Loss, Total		2,102		2,109
Substandard [Member] | SBL Non Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Two Years Before Latest Fiscal Year				20
Three Years Before Latest Fiscal Year		18		1,489
Four Years Before Latest Fiscal Year		574		1,347
Prior		1,282		1,491
Financing Receivable, before Allowance for Credit Loss, Total		1,874		4,347
Substandard [Member] | SBL Commercial Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Four Years Before Latest Fiscal Year				77
Prior		3,167		7,605
Financing Receivable, before Allowance for Credit Loss, Total		3,167		7,682
Substandard [Member] | SBL Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Four Years Before Latest Fiscal Year				711
Prior		711
Financing Receivable, before Allowance for Credit Loss, Total		711		711
Substandard [Member] | Direct Lease Financing [Member]
Financing Receivable, Recorded Investment [Line Items]
Current Fiscal Year		792		3,536
Fiscal Year Before Latest Fiscal Year		2,170		45
Two Years Before Latest Fiscal Year		39		97
Three Years Before Latest Fiscal Year		58		152
Four Years Before Latest Fiscal Year		78		536
Prior		14		38
Financing Receivable, before Allowance for Credit Loss, Total		3,151		4,404
Substandard [Member] | Other Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Fiscal Year Before Latest Fiscal Year		14
Four Years Before Latest Fiscal Year		48
Prior				301
Revolving loans at amortized cost		76
Financing Receivable, before Allowance for Credit Loss, Total		$ 138		$ 301

[1] The ending balance for loans in the unallocated column represents deferred costs and fees.

[2] Included in Other loans are $25.0 million of SBA loans purchased for CRA purposes as of September 30, 2021. These loans are classified as SBL in the Company’s loan table which classify loans by type, as opposed to risk characteristics.

[3] Included in Other loans are $35.4 million of SBA loans purchased for CRA purposes as of December 31, 2020. These loans are classified as SBL in the Company’s loan table which classify loans by type, as opposed to risk characteristics.

[4] Included in the SBL non real estate non-rated total of $75.1 million, were $71.3 million of PPP loans which are government guaranteed.

[5] Included in the SBL non real estate non-rated total of $170.9 million, were $165.7 million of PPP loans which are government guaranteed.