Loans And Allowance For Credit Losses (Summary Of Selected Information On TDRs That Includes Recorded Investment On An Accruing And Nonaccruing Basis By Loan Class And Modification Type) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended		12 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		$ 604	$ 2,265	$ 2,475	$ 2,466	$ 93,400	$ 97,300
1-4 family residential		5,268,840		5,268,840		5,268,840		$ 5,200,882
Construction and other consumer real estate		370,015		370,015		370,015		370,542
Commercial and industrial		13,035,251		13,035,251		13,035,251		13,162,955
Home equity credit line		2,347,061		2,347,061		2,347,061		2,321,150
Bankcard and other revolving plans		427,849		427,849		427,849		401,352
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Commercial and industrial		13,035,251		13,035,251		13,035,251		13,162,955
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
1-4 family residential		5,268,840		5,268,840		5,268,840		5,200,882
Construction and other consumer real estate		370,015		370,015		370,015		370,542
Home equity credit line		2,347,061		2,347,061		2,347,061		2,321,150
Bankcard and other revolving plans		427,849		427,849		427,849		401,352
Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		9	729	104	848
Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	1,025	943	1,025
Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		9	1,754	1,047	1,873
Term [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	833	0
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	833	0
Home Equity Line of Credit [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	158	0	201
One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		595	353	595	353
Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	39
Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		595	511	595	593
Accruing [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	96	0	96
Recorded investment resulting from the following modification types		178,136		178,136		178,136		245,550
Accruing [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Recorded investment resulting from the following modification types		13,528		13,528		13,528		20,375
Accruing [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Construction and other consumer real estate		1,818		1,818		1,818		2,071
Accruing [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	96	0	96
Commercial and industrial		39,934		39,934		39,934		50,781
Accruing [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Recorded investment resulting from the following modification types		28,996		28,996		28,996		51,781
Accruing [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	96	0	96
Recorded investment resulting from the following modification types		68,930		68,930		68,930		102,562
Accruing [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Recorded investment resulting from the following modification types		29,903		29,903		29,903		61,240
Accruing [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Recorded investment resulting from the following modification types		43,431		43,431		43,431		81,615
Accruing [Member] | Home Equity Line of Credit [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Accruing [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Home equity credit line		14,919		14,919		14,919		13,579
Accruing [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
1-4 family residential		49,038		49,038		49,038		45,723
Accruing [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Recorded investment resulting from the following modification types		65,775		65,775		65,775		61,373
Accruing [Member] | Interest Rate Below Market [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		10,195		10,195		10,195		33,377
Accruing [Member] | Interest Rate Below Market [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		97		97		97		0
Accruing [Member] | Interest Rate Below Market [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Construction and other consumer real estate		177		177		177		290
Accruing [Member] | Interest Rate Below Market [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Commercial and industrial		455		455		455		2,611
Accruing [Member] | Interest Rate Below Market [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		2,034		2,034		2,034		19,981
Accruing [Member] | Interest Rate Below Market [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		2,489		2,489		2,489		22,592
Accruing [Member] | Interest Rate Below Market [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		4,758		4,758		4,758		7,328
Accruing [Member] | Interest Rate Below Market [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		4,855		4,855		4,855		7,328
Accruing [Member] | Interest Rate Below Market [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Home equity credit line		192		192		192		742
Accruing [Member] | Interest Rate Below Market [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
1-4 family residential		2,482		2,482		2,482		2,425
Accruing [Member] | Interest Rate Below Market [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		2,851		2,851		2,851		3,457
Accruing [Member] | Maturity Or Team Extension [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		7,279		7,279		7,279		17,704
Accruing [Member] | Maturity Or Team Extension [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		0		0		0		0
Accruing [Member] | Maturity Or Team Extension [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Construction and other consumer real estate		488		488		488		422
Accruing [Member] | Maturity Or Team Extension [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Commercial and industrial		3,906		3,906		3,906		6,509
Accruing [Member] | Maturity Or Team Extension [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		701		701		701		1,124
Accruing [Member] | Maturity Or Team Extension [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		4,607		4,607		4,607		7,633
Accruing [Member] | Maturity Or Team Extension [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		766		766		766		9,027
Accruing [Member] | Maturity Or Team Extension [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		766		766		766		9,027
Accruing [Member] | Maturity Or Team Extension [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Home equity credit line		1,060		1,060		1,060		70
Accruing [Member] | Maturity Or Team Extension [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
1-4 family residential		358		358		358		552
Accruing [Member] | Maturity Or Team Extension [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		1,906		1,906		1,906		1,044
Accruing [Member] | Principal Forgiveness [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		19,653		19,653		19,653		19,347
Accruing [Member] | Principal Forgiveness [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		0		0		0		0
Accruing [Member] | Principal Forgiveness [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Construction and other consumer real estate		0		0		0		42
Accruing [Member] | Principal Forgiveness [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Commercial and industrial		14		14		14		18
Accruing [Member] | Principal Forgiveness [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		938		938		938		960
Accruing [Member] | Principal Forgiveness [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		952		952		952		978
Accruing [Member] | Principal Forgiveness [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		170		170		170		179
Accruing [Member] | Principal Forgiveness [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		170		170		170		179
Accruing [Member] | Principal Forgiveness [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Home equity credit line		11,143		11,143		11,143		11,320
Accruing [Member] | Principal Forgiveness [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
1-4 family residential		7,388		7,388		7,388		6,828
Accruing [Member] | Principal Forgiveness [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		18,531		18,531		18,531		18,190
Accruing [Member] | Payment Deferral [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		1,518		1,518		1,518		8,143
Accruing [Member] | Payment Deferral [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		0		0		0		0
Accruing [Member] | Payment Deferral [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Construction and other consumer real estate		0		0		0		90
Accruing [Member] | Payment Deferral [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Commercial and industrial		108		108		108		3,203
Accruing [Member] | Payment Deferral [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		0		0		0		1,251
Accruing [Member] | Payment Deferral [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		108		108		108		4,454
Accruing [Member] | Payment Deferral [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		975		975		975		3,153
Accruing [Member] | Payment Deferral [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		975		975		975		3,153
Accruing [Member] | Payment Deferral [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Home equity credit line		0		0		0		0
Accruing [Member] | Payment Deferral [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
1-4 family residential		435		435		435		446
Accruing [Member] | Payment Deferral [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		435		435		435		536
Accruing [Member] | Other Recorded Investment Resulting From Following Modification [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[1]	14,421		14,421		14,421		18,801
Accruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[1]	0		0		0		521
Accruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Construction and other consumer real estate	[1]	0		0		0		0
Accruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Commercial and industrial	[1]	223		223		223		3,855
Accruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[1]	8,151		8,151		8,151		10,960
Accruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[1]	8,374		8,374		8,374		14,815
Accruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[1]	2,409		2,409		2,409		2,546
Accruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[1]	2,409		2,409		2,409		3,067
Accruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Home equity credit line	[1]	164		164		164		166
Accruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
1-4 family residential	[1]	3,474		3,474		3,474		753
Accruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[1]	3,638		3,638		3,638		919
Accruing [Member] | Multiple Modification Types [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[2]	125,070		125,070		125,070		148,178
Accruing [Member] | Multiple Modification Types [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[2]	13,431		13,431		13,431		19,854
Accruing [Member] | Multiple Modification Types [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Construction and other consumer real estate	[2]	1,153		1,153		1,153		1,227
Accruing [Member] | Multiple Modification Types [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Commercial and industrial	[2]	35,228		35,228		35,228		34,585
Accruing [Member] | Multiple Modification Types [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[2]	17,172		17,172		17,172		17,505
Accruing [Member] | Multiple Modification Types [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[2]	52,400		52,400		52,400		52,090
Accruing [Member] | Multiple Modification Types [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[2]	20,825		20,825		20,825		39,007
Accruing [Member] | Multiple Modification Types [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[2]	34,256		34,256		34,256		58,861
Accruing [Member] | Multiple Modification Types [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Home equity credit line	[2]	2,360		2,360		2,360		1,281
Accruing [Member] | Multiple Modification Types [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
1-4 family residential	[2]	34,901		34,901		34,901		34,719
Accruing [Member] | Multiple Modification Types [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[2]	38,414		38,414		38,414		37,227
Nonaccruing [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		604	2,169	2,475	2,370
Recorded investment resulting from the following modification types		286,523		286,523		286,523		343,329
Nonaccruing [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Recorded investment resulting from the following modification types		15,031		15,031		15,031		20,968
Nonaccruing [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		12,511		12,511		12,511		21,074
Nonaccruing [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		9	633	104	752
Commercial and industrial		45,880		45,880		45,880		27,238
Nonaccruing [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	1,025	943	1,025
Recorded investment resulting from the following modification types		17,891		17,891		17,891		19,708
Nonaccruing [Member] | Municipal [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		967		967		967		1,056
Nonaccruing [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		9	1,658	1,047	1,777
Recorded investment resulting from the following modification types		64,738		64,738		64,738		48,002
Nonaccruing [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	833	0
Recorded investment resulting from the following modification types		16,107		16,107		16,107		7,735
Nonaccruing [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	833	0
Recorded investment resulting from the following modification types		31,138		31,138		31,138		28,703
Nonaccruing [Member] | Home Equity Line of Credit [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	158	0	201
Nonaccruing [Member] | Home Equity Credit Line [Member]
Financing Receivable, Modifications [Line Items]
Home equity credit line		1,140		1,140		1,140		1,022
Nonaccruing [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		595	353	595	353
1-4 family residential		11,078		11,078		11,078		19,489
Nonaccruing [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	39
Construction and other consumer real estate		293		293		293		563
Nonaccruing [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		595	$ 511	595	$ 593
Recorded investment resulting from the following modification types		108,387		108,387		108,387		97,779
Nonaccruing [Member] | Interest Rate Below Market [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		24,481		24,481		24,481		53,842
Nonaccruing [Member] | Interest Rate Below Market [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		10,512		10,512		10,512		11,080
Nonaccruing [Member] | Interest Rate Below Market [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		8		8		8		3,378
Nonaccruing [Member] | Interest Rate Below Market [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Commercial and industrial		90		90		90		442
Nonaccruing [Member] | Interest Rate Below Market [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		1,220		1,220		1,220		2,714
Nonaccruing [Member] | Interest Rate Below Market [Member] | Municipal [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		0		0		0		0
Nonaccruing [Member] | Interest Rate Below Market [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		1,310		1,310		1,310		3,156
Nonaccruing [Member] | Interest Rate Below Market [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		2,456		2,456		2,456		2,851
Nonaccruing [Member] | Interest Rate Below Market [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		12,968		12,968		12,968		13,931
Nonaccruing [Member] | Interest Rate Below Market [Member] | Home Equity Credit Line [Member]
Financing Receivable, Modifications [Line Items]
Home equity credit line		8		8		8		0
Nonaccruing [Member] | Interest Rate Below Market [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
1-4 family residential		0		0		0		3,378
Nonaccruing [Member] | Interest Rate Below Market [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Construction and other consumer real estate		0		0		0		0
Nonaccruing [Member] | Interest Rate Below Market [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		14,286		14,286		14,286		20,465
Nonaccruing [Member] | Maturity Or Team Extension [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		11,738		11,738		11,738		22,115
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		354		354		354		68
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		925		925		925		1,492
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Commercial and industrial		471		471		471		576
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		1,742		1,742		1,742		1,219
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Municipal [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		967		967		967		1,056
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		3,180		3,180		3,180		2,851
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		0		0		0		0
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		354		354		354		68
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Home Equity Credit Line [Member]
Financing Receivable, Modifications [Line Items]
Home equity credit line		514		514		514		0
Nonaccruing [Member] | Maturity Or Team Extension [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
1-4 family residential		268		268		268		1,029
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Construction and other consumer real estate		143		143		143		463
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		4,459		4,459		4,459		4,411
Nonaccruing [Member] | Principal Forgiveness [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		23,101		23,101		23,101		21,718
Nonaccruing [Member] | Principal Forgiveness [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		0		0		0		0
Nonaccruing [Member] | Principal Forgiveness [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		2,615		2,615		2,615		2,371
Nonaccruing [Member] | Principal Forgiveness [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Commercial and industrial		0		0		0		0
Nonaccruing [Member] | Principal Forgiveness [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		0		0		0		0
Nonaccruing [Member] | Principal Forgiveness [Member] | Municipal [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		0		0		0		0
Nonaccruing [Member] | Principal Forgiveness [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		0		0		0		0
Nonaccruing [Member] | Principal Forgiveness [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		833		833		833		0
Nonaccruing [Member] | Principal Forgiveness [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		833		833		833		0
Nonaccruing [Member] | Principal Forgiveness [Member] | Home Equity Credit Line [Member]
Financing Receivable, Modifications [Line Items]
Home equity credit line		512		512		512		420
Nonaccruing [Member] | Principal Forgiveness [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
1-4 family residential		2,085		2,085		2,085		1,951
Nonaccruing [Member] | Principal Forgiveness [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Construction and other consumer real estate		18		18		18		0
Nonaccruing [Member] | Principal Forgiveness [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		3,448		3,448		3,448		2,371
Nonaccruing [Member] | Payment Deferral [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		9,660		9,660		9,660		10,124
Nonaccruing [Member] | Payment Deferral [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		0		0		0		93
Nonaccruing [Member] | Payment Deferral [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		291		291		291		394
Nonaccruing [Member] | Payment Deferral [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Commercial and industrial		2,018		2,018		2,018		611
Nonaccruing [Member] | Payment Deferral [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		5,833		5,833		5,833		883
Nonaccruing [Member] | Payment Deferral [Member] | Municipal [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		0		0		0		0
Nonaccruing [Member] | Payment Deferral [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		7,851		7,851		7,851		1,494
Nonaccruing [Member] | Payment Deferral [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		0		0		0		0
Nonaccruing [Member] | Payment Deferral [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		0		0		0		93
Nonaccruing [Member] | Payment Deferral [Member] | Home Equity Credit Line [Member]
Financing Receivable, Modifications [Line Items]
Home equity credit line		58		58		58		203
Nonaccruing [Member] | Payment Deferral [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
1-4 family residential		173		173		173		191
Nonaccruing [Member] | Payment Deferral [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Construction and other consumer real estate		60		60		60		0
Nonaccruing [Member] | Payment Deferral [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		8,142		8,142		8,142		1,981
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[1]	27,131		27,131		27,131		33,956
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[1]	3,197		3,197		3,197		3,300
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[1]	1,227		1,227		1,227		3,527
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Commercial and industrial	[1]	5,351		5,351		5,351		5,199
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[1]	36		36		36		2,852
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Municipal [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		0		0		0		0
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[1]	5,387		5,387		5,387		8,051
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[1]	2,899		2,899		2,899		277
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[1]	6,096		6,096		6,096		3,577
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Home Equity Credit Line [Member]
Financing Receivable, Modifications [Line Items]
Home equity credit line	[1]	0		0		0		0
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
1-4 family residential	[1]	1,227		1,227		1,227		3,527
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Construction and other consumer real estate	[1]	0		0		0		0
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[1]	12,710		12,710		12,710		15,155
Nonaccruing [Member] | Multiple Modification Types [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[2]	190,412		190,412		190,412		201,574
Nonaccruing [Member] | Multiple Modification Types [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[2]	968		968		968		6,427
Nonaccruing [Member] | Multiple Modification Types [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[2]	7,445		7,445		7,445		9,912
Nonaccruing [Member] | Multiple Modification Types [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Commercial and industrial	[2]	37,950		37,950		37,950		20,410
Nonaccruing [Member] | Multiple Modification Types [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[2]	9,060		9,060		9,060		12,040
Nonaccruing [Member] | Multiple Modification Types [Member] | Municipal [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types		0		0		0		0
Nonaccruing [Member] | Multiple Modification Types [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[2]	47,010		47,010		47,010		32,450
Nonaccruing [Member] | Multiple Modification Types [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[2]	9,919		9,919		9,919		4,607
Nonaccruing [Member] | Multiple Modification Types [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[2]	10,887		10,887		10,887		11,034
Nonaccruing [Member] | Multiple Modification Types [Member] | Home Equity Credit Line [Member]
Financing Receivable, Modifications [Line Items]
Home equity credit line	[2]	48		48		48		399
Nonaccruing [Member] | Multiple Modification Types [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
1-4 family residential	[2]	7,325		7,325		7,325		9,413
Nonaccruing [Member] | Multiple Modification Types [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Construction and other consumer real estate	[2]	72		72		72		100
Nonaccruing [Member] | Multiple Modification Types [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Recorded investment resulting from the following modification types	[2]	$ 65,342		$ 65,342		$ 65,342		$ 53,396

[1] Includes TDRs that resulted from other modification types including, but not limited to, a legal judgment awarded on different terms, a bankruptcy plan confirmed on different terms, a settlement that includes the delivery of collateral in exchange for debt reduction, etc.

[2] Includes TDRs that resulted from a combination of any of the previous modification types.