Bank Loans (Schedule of Term Loans Amortized Cost Basis by Origination Year and Revolving Cost Amortized Cost Basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	$ 19,158,620	$ 16,743,487
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	8,347,410	7,345,753
Commercial and Industrial [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty Two [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	966,755
Commercial and Industrial [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty One [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,657,882
Commercial and Industrial [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	360,233
Commercial and Industrial [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Nineteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	349,917
Commercial and Industrial [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Eighteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	477,004
Commercial and Industrial [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	556,701
Commercial and Industrial [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	3,978,918
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	6,607,825	5,482,026
Residential Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty Two [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,764,281
Residential Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty One [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	2,573,959
Residential Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,050,178
Residential Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Nineteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	470,393
Residential Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Eighteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	194,258
Residential Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	554,756
Securities-Based Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	2,993,552	2,880,158
Securities-Based Loans [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty Two [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,049
Securities-Based Loans [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty One [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	48,119
Securities-Based Loans [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	33,218
Securities-Based Loans [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Nineteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	89,378
Securities-Based Loans [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Eighteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	0
Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	10,312
Securities-Based Loans [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	2,811,476
Construction And Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	432,039	511,084
Construction And Land [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty Two [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	26,193
Construction And Land [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty One [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	56,293
Construction And Land [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	183,362
Construction And Land [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Nineteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	104,565
Construction And Land [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Eighteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	45,116
Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	16,510
Construction And Land [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	0
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	629,459	409,847
Commercial Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty Two [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	162,591
Commercial Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty One [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	125,644
Commercial Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	72,644
Commercial Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Nineteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	141,162
Commercial Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Eighteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	78,384
Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	49,034
Commercial Real Estate [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	0
Home Equity Lines Of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	103,096	82,508
Home Equity Lines Of Credit [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty Two [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	0
Home Equity Lines Of Credit [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty One [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	0
Home Equity Lines Of Credit [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	0
Home Equity Lines Of Credit [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Nineteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	0
Home Equity Lines Of Credit [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Eighteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	0
Home Equity Lines Of Credit [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	0
Home Equity Lines Of Credit [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	103,096
Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	45,239	32,111
Other [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty Two [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	7,263
Other [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty One [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	782
Other [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	10,000
Other [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Nineteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	0
Other [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Eighteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,581
Other [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	24,105
Other [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,508
Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	18,989,865	16,553,018
Pass [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	8,200,462	7,193,435
Pass [Member] | Commercial and Industrial [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty Two [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	966,755
Pass [Member] | Commercial and Industrial [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty One [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,645,898
Pass [Member] | Commercial and Industrial [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	359,765
Pass [Member] | Commercial and Industrial [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Nineteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	291,693
Pass [Member] | Commercial and Industrial [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Eighteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	422,874
Pass [Member] | Commercial and Industrial [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	538,748
Pass [Member] | Commercial and Industrial [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	3,974,729
Pass [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	6,606,035	5,480,693
Pass [Member] | Residential Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty Two [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,764,281
Pass [Member] | Residential Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty One [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	2,573,959
Pass [Member] | Residential Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,050,178
Pass [Member] | Residential Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Nineteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	470,393
Pass [Member] | Residential Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Eighteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	194,258
Pass [Member] | Residential Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	552,966
Pass [Member] | Securities-Based Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	2,993,549	2,880,158
Pass [Member] | Securities-Based Loans [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty Two [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,049
Pass [Member] | Securities-Based Loans [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty One [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	48,119
Pass [Member] | Securities-Based Loans [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	33,218
Pass [Member] | Securities-Based Loans [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Nineteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	89,378
Pass [Member] | Securities-Based Loans [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	10,312
Pass [Member] | Securities-Based Loans [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	2,811,473
Pass [Member] | Construction And Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	432,039	476,844
Pass [Member] | Construction And Land [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty Two [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	26,193
Pass [Member] | Construction And Land [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty One [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	56,293
Pass [Member] | Construction And Land [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	183,362
Pass [Member] | Construction And Land [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Nineteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	104,565
Pass [Member] | Construction And Land [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Eighteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	45,116
Pass [Member] | Construction And Land [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	16,510
Pass [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	609,459	407,298
Pass [Member] | Commercial Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty Two [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	162,591
Pass [Member] | Commercial Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty One [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	125,644
Pass [Member] | Commercial Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	72,644
Pass [Member] | Commercial Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Nineteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	141,162
Pass [Member] | Commercial Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Eighteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	58,384
Pass [Member] | Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	49,034
Pass [Member] | Home Equity Lines Of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	103,096	82,479
Pass [Member] | Home Equity Lines Of Credit [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	103,096
Pass [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	45,225	32,111
Pass [Member] | Other [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty Two [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	7,263
Pass [Member] | Other [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty One [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	782
Pass [Member] | Other [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	10,000
Pass [Member] | Other [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Eighteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,581
Pass [Member] | Other [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	24,105
Pass [Member] | Other [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,494
Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	30,000	54,817
Special Mention [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	30,000	38,000
Special Mention [Member] | Commercial and Industrial [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Nineteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	30,000
Special Mention [Member] | Construction And Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year		14,240
Special Mention [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year		2,548
Special Mention [Member] | Home Equity Lines Of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year		29
Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	109,670	127,831
Substandard [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	89,596	107,747
Substandard [Member] | Commercial and Industrial [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Nineteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	28,224
Substandard [Member] | Commercial and Industrial [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Eighteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	45,355
Substandard [Member] | Commercial and Industrial [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	11,828
Substandard [Member] | Commercial and Industrial [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	4,189
Substandard [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	74	84
Substandard [Member] | Residential Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	74
Substandard [Member] | Construction And Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year		20,000
Substandard [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	20,000
Substandard [Member] | Commercial Real Estate [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Eighteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	20,000
Doubtful [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	29,085	7,821
Doubtful [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	27,352	6,571
Doubtful [Member] | Commercial and Industrial [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty One [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	11,984
Doubtful [Member] | Commercial and Industrial [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Twenty [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	468
Doubtful [Member] | Commercial and Industrial [Member] | Term Loans Amortized Cost Basis By Origination Year Two Thousand Eighteen [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	8,775
Doubtful [Member] | Commercial and Industrial [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	6,125
Doubtful [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,716	1,249
Doubtful [Member] | Residential Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,716
Doubtful [Member] | Securities-Based Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	3
Doubtful [Member] | Securities-Based Loans [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	3
Doubtful [Member] | Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year		$ 1
Doubtful [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	14
Doubtful [Member] | Other [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	$ 14