Bank Loans (Schedule of Term Loans Amortized Cost Basis by Origination Year and Revolving Cost Amortized Cost Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	$ 20,819,250	$ 16,743,487
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	9,394,557	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	1,274,266
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	1,673,223
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	327,702
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	332,417
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	463,370
Commercial and Industrial [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	419,913
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	4,903,666
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	7,048,762	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	2,374,782
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	2,517,588
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	1,010,216
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	449,707
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	187,318
Residential Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	509,151
Securities-Based Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	2,785,679	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	11,194
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	45,049
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	35,821
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	25,428
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	2,657,875
Construction And Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	564,581	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	95,571
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	85,292
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	214,609
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	104,793
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	47,806
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	872,010	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	416,733
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	126,737
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	72,387
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	131,082
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	78,018
Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	47,053
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	106,037	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	106,037
Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	47,624	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	9,320
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	1,691
Other [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	24,104
Other [Member] | Revolving Loans Amortized Cost Basis [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,727
Pass [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	20,579,965	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	9,254,217	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	1,274,266
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	1,649,819
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	327,252
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	273,715
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	421,262
Pass [Member] | Commercial and Industrial [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	409,037
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	4,898,866
Pass [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	7,046,822	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	2,374,782
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	2,517,438
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	1,010,216
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	449,707
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	187,318
Pass [Member] | Residential Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	507,361
Pass [Member] | Securities-Based Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	2,785,676	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	11,194
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	45,049
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	35,821
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	25,428
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	2,657,872
Pass [Member] | Construction And Land [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	564,581	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	95,571
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	85,292
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	214,609
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	104,793
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	47,806
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	775,010	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	416,733
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	126,737
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	72,387
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	54,082
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	58,018
Pass [Member] | Commercial Real Estate [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	47,053
Pass [Member] | Home Equity Lines Of Credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	106,037	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	106,037
Pass [Member] | Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	47,622	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	9,320
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	1,691
Pass [Member] | Other [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	24,104
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	1,725
Special Mention [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	146,919	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	69,769	38,000
Special Mention [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	23,404
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	30,689
Special Mention [Member] | Commercial and Industrial [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	10,876
Special Mention [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	4,800
Special Mention [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	150
Special Mention [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	150
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	77,000	2,548
Special Mention [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	77,000
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	81,346	127,831
Substandard [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	61,346	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	28,013
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	33,333
Substandard [Member] | Commercial and Industrial [Member] | Prior [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	0
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	0
Substandard [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	0	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	0
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	11,020	7,821
Doubtful [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	9,225	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	0
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	450
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	0
Doubtful [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Term loans amortized cost basis by origination year	1,790	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	1,790
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	2
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	$ 2