Summary Of Significant Accounting Policies (Narrative) (Details) - USD ($)			1 Months Ended		12 Months Ended
	Jul. 10, 2018	Nov. 29, 2012	Jan. 31, 2020	May 31, 2016	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Aug. 13, 2020	Mar. 31, 2020
Accounting Policies [Line Items]
Other than temporary impairment charges						$ 0	$ 0
Loans held for sale					$ 1,810,000,000	1,180,000,000
Amortization of intangible assets					556,000	1,531,000	1,531,000
Other real estate owned					0	0
Advertising costs					$ 1,300,000	$ 782,000	$ 423,000
Stock options included in dilutive earnings per share, due to exercise price per share being less than average market price					1,056,604	971,604	1,160,000
Minimum exercisable prices (in dollars per share)					$ 6.75	$ 6.75	$ 6.75
Maximum exercisable prices (in dollars per share)					$ 8.57	$ 9.58	$ 9.84
Common stock options (in shares)					105,000	340,000
Restricted cash and cash equivalents					$ 0	$ 314,700,000
Gross Carrying Amount					6,308,000	17,228,000
Amortization expense per year					398,000
Accumulated Amortization					$ 3,463,000	$ 14,913,000
Number of stock repurchased under, Stock repurchase program (in shares)					100,000	100,000
Amount per quarter planned for stock repurchase					$ 10,000,000.0
Long-term borrowings					40,300,000	$ 41,000,000.0
Accumulated earnings					128,453,000	50,742,000
Deferred Tax Assets, Gross					36,032,000	31,479,000
Other liabilities					$ 81,583,000	65,962,000
Senior Debt [Member]
Accounting Policies [Line Items]
Debt instrument, face amount								$ 100,000,000.0
Debt instrument, maturity date					Aug. 15, 2025
Interest rate (in hundredths)								4.75%
McMahon Leasing [Member]
Accounting Policies [Line Items]
Extinguishment of debt			$ 3,900,000
Investment in subsidiary			3,100,000
Acquired finite-lived intangible assets			1,100,000
Payments for purchase of business			8,700,000
Purchase of lease receivables			9,900,000
Purchase of automobile inventory and other assets			958,000
Excess of consideration issued over book value of assets acquired			1,600,000
Goodwill			263,000
Lease receivable and inventory fair value adjustment			550,000
Safe Harbor Individual Retirement Account Shira Portfolio [Member] | Discontinued Operations, Disposed of by Sale [Member]
Accounting Policies [Line Items]
Deposits, Savings Deposits	$ 400,000,000
Disposal Group, Including Discontinued Operation, Consideration	65,000,000.0
Accounting Standards Update 2016-13 [Member]
Accounting Policies [Line Items]
Accumulated earnings									$ 2,400,000
Deferred Tax Assets, Gross									834,000
Allowance for credit losses									2,600,000
Other liabilities									(569,000)
Reserve on unfunded commitments									$ 569,000
Internal Use Software [Member]
Accounting Policies [Line Items]
Estimated useful life					7 years
Total capitalized software costs					$ 5,600,000	7,500,000
Amortization of intangible assets					2,400,000	2,300,000	$ 2,400,000
Software Intangible [Member]
Accounting Policies [Line Items]
Estimated useful life		8 years
Amortization of intangible assets		$ 217,000
Acquired finite-lived intangible assets		$ 1,800,000
Gross Carrying Amount					1,817,000	1,817,000
Accumulated Amortization					1,817,000	1,658,000
Customer List Intangibles [Member]
Accounting Policies [Line Items]
Estimated useful life				10 years
Acquired finite-lived intangible assets				$ 3,400,000	3,400,000	3,400,000
Acquired finite lived intangible assets accumulated amortization					1,600,000	1,200,000
Gross Carrying Amount					4,093,000	15,411,000
Amortization expense per year					340,000
Amortization expense over next five years					1,700,000
Accumulated Amortization					$ 1,646,000	13,255,000
Purchase of lease receivables				$ 60,000,000
Customer List Intangibles [Member] | McMahon Leasing [Member]
Accounting Policies [Line Items]
Estimated useful life					12 years
Gross Carrying Amount			689,000
Amortization expense per year					$ 57,000
Amortization expense over next five years					285,000
Accumulated Amortization					57,000
Leases [Member] | McMahon Leasing [Member]
Accounting Policies [Line Items]
Excess of consideration issued over book value of assets acquired			453,000
Trade Names [Member]
Accounting Policies [Line Items]
Gross Carrying Amount					135,000
Trade Names [Member] | McMahon Leasing [Member]
Accounting Policies [Line Items]
Acquired finite-lived intangible assets			$ 135,000
Fair Value, Measurements, Recurring [Member]
Accounting Policies [Line Items]
Loans held for sale					$ 1,810,812,000	$ 1,180,546,000
SHIRA Portfolio, Deposit Account [Member]
Accounting Policies [Line Items]
Non-interest income	$ 3,400,000