Zions Bancorporation, National Association (ZION) 10-Q 6 Nov 15 2015 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Nov. 02, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q3
Trading Symbol	zion
Entity Registrant Name	ZIONS BANCORPORATION /UT/
Entity Central Index Key	109,380
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		204,294,516

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
ASSETS
Cash and due from banks	$ 602,694	$ 841,942
Money market investments:
Interest-bearing deposits	6,558,678	7,178,097
Federal funds sold and security resell agreements	1,325,501	1,386,291
Investment securities:
Held-to-maturity, at adjusted cost (approximate fair value $553,088 and $677,196)	544,168	647,252
Available-for-sale, at fair value	6,000,011	3,844,248
Trading account, at fair value	73,521	70,601
Marketable securities, total	6,617,700	4,562,101
Loans held for sale	139,122	132,504
Loans and leases, net of unearned income and fees:
Loans and leases receivable, net of unearned income and fees	40,113,123	40,063,658
Less allowance for loan losses	596,440	604,663
Loans, net of allowance	39,516,683	39,458,995
Other noninterest-bearing investments	851,225	865,950
Premises and equipment, net	873,800	829,809
Goodwill	1,014,129	1,014,129
Core deposit and other intangibles	18,546	25,520
Other real estate owned	12,799	18,916
Other assets	880,050	894,620
Total assets	58,410,927	57,208,874
LIABILITIES AND SHAREHOLDERS' EQUITY
Noninterest-bearing demand	21,572,022	20,529,124
Interest-bearing:
Savings and money market	24,690,359	24,583,636
Time	2,216,206	2,406,924
Foreign	441,560	328,391
Total deposits	48,920,147	47,848,075
Federal funds and other short-term borrowings	272,391	244,223
Long-term debt	944,752	1,092,282
Reserve for unfunded lending commitments	81,389	81,076
Other liabilities	554,153	573,688
Total liabilities	50,772,832	49,839,344
Shareholders' equity:
Preferred stock, without par value, authorized 4,400,000 shares	1,004,159	1,004,011
Common stock, without par value; authorized 350,000,000 shares; issued and outstanding 204,278,594 and 203,014,903 shares	4,756,288	4,723,855
Retained earnings	1,894,623	1,769,705
Accumulated other comprehensive income (loss)	(16,975)	(128,041)
Total shareholders' equity	7,638,095	7,369,530
Total liabilities and shareholders' equity	$ 58,410,927	$ 57,208,874

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Held-to-maturity, fair value	$ 553,088	$ 677,196
Preferred stock, authorized shares	4,400,000	4,400,000
Common stock, authorized shares	350,000,000	350,000,000
Common stock, issued shares	204,278,594	203,014,903
Common stock, outstanding shares	204,278,594	203,014,903

Consolidated Statements Of Inco

Consolidated Statements Of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Interest income:
Interest and fees on loans	$ 419,981	$ 430,416	$ 1,256,378	$ 1,298,567
Interest on money market investments	6,018	5,483	17,021	15,501
Interest on Securities	30,231	24,377	86,513	76,973
Interest expense:
Interest on deposits	12,542	12,313	36,967	37,188
Interest on short- and long-term borrowings	18,311	31,144	56,518	104,280
Total interest expense	30,853	43,457	93,485	141,468
Net interest income	425,377	416,819	1,266,427	1,249,573
Provision for loan losses	18,262	(54,643)	17,334	(109,669)
Net interest income after provision for loan losses	407,115	471,462	1,249,093	1,359,242
Noninterest income:
Service charges and fees on deposit accounts	43,196	43,468	126,006	126,068
Other service charges, commissions and fees	52,837	51,639	152,028	143,847
Wealth management income	7,496	7,438	23,271	22,495
Loan sales and servicing income	7,728	7,592	23,816	22,020
Capital markets and foreign exchange	6,624	5,400	19,400	16,319
Dividends and other investment income	8,449	11,324	27,164	27,183
Fair value and nonhedge derivative income (loss)	(1,555)	44	(799)	(10,429)
Equity securities gains, net	3,630	440	11,822	3,865
Fixed income securities gains (losses), net	(53)	(13,901)	(138,728)	22,039
Impairment losses on investment securities:
Impairment losses on investment securities	0	$ 0	0	(27)
Less amounts recognized in other comprehensive income	0		0	0
Net impairment losses on investment securities	0	$ 0	0	(27)
Other	2,461	2,627	9,076	5,854
Total noninterest income	130,813	116,071	253,056	379,234
Noninterest expense:
Salaries and employee benefits	242,023	245,518	736,675	717,680
Occupancy, net	29,477	28,495	88,911	85,739
Furniture, equipment and software	30,416	28,524	91,376	84,454
Other real estate expense, net	(40)	875	(111)	2,216
Credit-related expense	6,914	6,508	20,959	20,615
Provision for Unfunded Lending Commitments	(1,428)	16,095	(313)	10,328
Professional and legal services	12,699	16,588	37,292	39,754
Advertising	6,136	6,094	19,622	19,295
FDIC premiums	8,500	8,204	25,228	24,143
Amortization of core deposit and other intangibles	2,298	2,665	6,974	8,283
Debt extinguishment cost	0	44,422	2,395	44,422
Other	56,298	66,738	168,076	206,353
Total noninterest expense	396,149	438,536	1,197,710	1,242,626
Income before income taxes	141,779	148,997	304,439	495,850
Income taxes	40,780	53,109	97,455	179,202
Net income	100,999	95,888	206,984	316,648
Dividends on preferred stock	(16,761)	(16,761)	(48,567)	(56,841)
Net earnings applicable to common shareholders	$ 84,238	$ 79,127	$ 158,417	$ 259,807
Weighted average common shares outstanding during the period:
Basic shares	203,668	196,687	203,057	188,643
Diluted shares	204,155	197,271	203,511	189,260
Net earnings per common share:
Basic	$ 0.41	$ 0.40	$ 0.77	$ 1.36
Diluted	$ 0.41	$ 0.40	$ 0.77	$ 1.36
Interest and Dividend Income, Operating	$ 456,230	$ 460,276	$ 1,359,912	$ 1,391,041

Consolidated Statements Of Comp

Consolidated Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net income for the period	$ 100,999	$ 95,888	$ 206,984	$ 316,648
Other comprehensive income, net of tax:
Unrealized holding gains on investment securities	11,268	18,265	4,460	100,723
Reclassification of HTM securities to AFS Securities	0	0	10,938	0
Reclassification to earnings for realized net fixed income securities losses (gains)	33	7,886	85,845	(20,058)
Reclassification to earnings for net credit-related impairment losses on investment securities	0	0	0	17
Accretion of securities with noncredit-related impairment losses not expected to be sold	0	276	0	835
Net unrealized gains (losses) on other noninterest-bearing investments	(1,881)	454	94	(333)
Net unrealized holding gains (losses) on derivative instruments	10,607	(508)	12,941	1,011
Reclassification adjustment for increase in interest income recognized in earnings on derivatives instruments	(1,830)	(463)	(3,212)	(1,021)
Other comprehensive income	18,197	25,910	111,066	81,174
Comprehensive income	$ 119,196	$ 121,798	$ 318,050	$ 397,822

Consolidated Statements Of Chan

Consolidated Statements Of Changes In Shareholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Stock Issued During Period, Value, New Issues	$ 515,856		$ 515,856
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock Issued During Period, Shares, New Issues			17,617,450
Balance at Dec. 31, 2013	6,464,563	$ 1,003,970	$ 4,179,024	$ 1,473,670	$ (192,101)
Balance (in shares) at Dec. 31, 2013			184,677,696
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income for the period	316,648			316,648
Other comprehensive income, net of tax	81,174				81,174
Subordinated debt converted to preferred stock	31	$ 36	$ (5)
Net activity under employee plans and related tax benefits	22,420		$ 22,420
Net activity under employee plans and related tax benefits, shares			603,345
Dividends on preferred stock	(56,841)			(56,841)
Dividends on common stock, $0.16 per share	(23,039)			(23,039)
Change in deferred compensation	1,347			1,347
Balance at Sep. 30, 2014	7,322,159	$ 1,004,006	$ 4,717,295	1,711,785	(110,927)
Balance (in shares) at Sep. 30, 2014			202,898,491
Balance at Dec. 31, 2014	$ 7,369,530	1,004,011	$ 4,723,855	1,769,705	(128,041)
Balance (in shares) at Dec. 31, 2014	203,014,903		203,014,903
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income for the period	$ 206,984			206,984
Other comprehensive income, net of tax	111,066				111,066
Subordinated debt converted to preferred stock	104	148	$ (44)
Net activity under employee plans and related tax benefits	32,477		$ 32,477
Net activity under employee plans and related tax benefits, shares			1,263,691
Dividends on preferred stock	(48,567)			(48,567)
Dividends on common stock, $0.16 per share	(32,785)			(32,785)
Change in deferred compensation	(714)			(714)
Balance at Sep. 30, 2015	$ 7,638,095	$ 1,004,159	$ 4,756,288	$ 1,894,623	$ (16,975)
Balance (in shares) at Sep. 30, 2015	204,278,594		204,278,594

Consolidated Statements Of Cha7

Consolidated Statements Of Changes In Shareholders' Equity (Parenthetical) - $ / shares	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Dividends on common stock, per share	$ 0.16	$ 0.12

Consolidated Statements Of Cash

Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net income for the period	$ 100,999	$ 95,888	$ 206,984	$ 316,648
Adjustments to reconcile net income to net cash provided by operating activities:
Debt extinguishment cost	0	(44,422)	(2,395)	(44,422)
Provision for credit losses	19,690	(70,738)	17,647	(119,997)
Depreciation and amortization	40,281	33,860	109,563	97,414
Fixed income securities losses (gains), net	53	13,901	138,728	(22,039)
Deferred income tax expense (benefit)	(10,027)	2,960	(51,056)	22,368
Net decrease (increase) in trading securities	970	1,241	(2,950)	(20,868)
Net decrease (increase) in loans held for sale	23,314	53,820	3,263	60,774
Change in other liabilities	21,525	33,919	(14,738)	(24,598)
Change in other assets	31,178	4,739	(1,991)	(8,721)
Other, net	(15,461)	(5,745)	(21,475)	6,528
Net cash provided by operating activities	212,522	208,267	386,370	351,931
CASH FLOWS FROM INVESTING ACTIVITIES
Net decrease (increase) in money market investments	1,181,378	(955,971)	680,209	635,594
Proceeds from maturities and paydowns of investment securities held-to-maturity	26,875	20,796	87,785	58,921
Purchases of investment securities held-to-maturity	(142)	(14,964)	(24,203)	(78,228)
Proceeds from sales, maturities, and paydowns of investment securities available-for-sale	385,584	374,973	1,365,851	1,417,234
Purchases of investment securities available-for-sale	(1,728,939)	(451,212)	(3,486,509)	(1,125,036)
Net change in loans and leases	(122,868)	(126,173)	(74,974)	(738,706)
Purchases of premises and equipment	(38,747)	(26,153)	(106,115)	(138,884)
Proceeds from sales of other real estate owned	8,019	8,200	16,592	37,112
Other, net	17,610	12,799	46,935	19,796
Net cash provided by (used in) investing activities	(271,230)	(1,157,705)	(1,494,429)	87,803
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase (decrease) in deposits	(16,977)	594,422	1,072,072	(96,321)
Net change in short-term funds borrowed	45,267	(66,603)	28,168	(148,550)
Repayments of long-term debt	(111,477)	(834,964)	(164,082)	(1,196,123)
Debt extinguishment costs paid	0	35,435	2,395	35,435
Proceeds from issuances of common stock	13,599	519,559	19,631	524,080
Dividends paid on common and preferred stock	(27,420)	(23,243)	(79,699)	(71,191)
Other, net	172	112	(4,884)	(3,579)
Net cash provided by (used in) financing activities	(96,836)	153,848	868,811	(1,027,119)
Net increase (decrease) in cash and due from banks	(155,544)	(795,590)	(239,248)	(587,385)
Cash and due from banks at beginning of period	758,238	1,381,262	841,942	1,173,057
Cash and due from banks at end of period	602,694	585,672	602,694	585,672
Cash paid for interest	22,162	41,138	73,219	122,807
Net cash paid for income taxes	$ 8,679	$ 58,645	$ 100,505	$ 181,301

Basis of Presentaion

Basis of Presentaion	9 Months Ended
	Sep. 30, 2015
Basis Of Presentation [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	BASIS OF PRESENTATION The accompanying unaudited consolidated financial statements of Zions Bancorporation (“the Parent”) and its majority-owned subsidiaries (collectively “the Company,” “Zions,” “we,” “our,” “us”) have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. References to GAAP, including standards promulgated by the Financial Accounting Standards Board (“FASB”), are made according to sections of the Accounting Standards Codification (“ASC”) and to Accounting Standards Updates (“ASU”), which include consensus issues of the Emerging Issues Task Force (“EITF”). In certain cases, ASUs are issued jointly with International Financial Reporting Standards (“IFRS”). Certain prior period amounts have been reclassified to conform with the current period presentation. These reclassifications did not affect net income. Operating results for the three and nine months ended September 30, 2015 and 2014 are not necessarily indicative of the results that may be expected in future periods. The consolidated balance sheet at December 31, 2014 is from the audited financial statements at that date, but does not include all of the information and footnotes required by GAAP for complete financial statements. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company’s 2014 Annual Report on Form 10-K. The Company provides a full range of banking and related services through subsidiary banks in 11 Western and Southwestern states as follows: Zions First National Bank (“Zions Bank”), in Utah, Idaho and Wyoming; Amegy Corporation (“Amegy”) and its subsidiary, Amegy Bank, in Texas; California Bank & Trust (“CB&T”); National Bank of Arizona (“NBAZ”); Nevada State Bank (“NSB”); Vectra Bank Colorado (“Vectra”), in Colorado and New Mexico; and The Commerce Bank of Washington (“TCBW”), in Washington and Oregon. Effective April 1, 2015, The Commerce Bank of Oregon (“TCBO”) was merged into TCBW. The Parent and its subsidiary banks also own and operate certain nonbank subsidiaries that engage in financial services. On June 1, 2015, the Company announced certain efficiency and restructuring initiatives that included, among other things, the mergers of its seven subsidiary banks into Zions Bank, whose name will be changed to ZB, N.A. Regional brand names according to geographic location will continue to be used. The Company has received approvals from the Office of the Comptroller of the Currency and the Federal Deposit Insurance Corporation and expects to complete the mergers following the close of business on December 31, 2015.

Certain Recent Accounting Prono

Certain Recent Accounting Pronouncements (Notes)	9 Months Ended
	Sep. 30, 2015
Certain Recent Accounting Pronouncements [Abstract]
Certain Recent Accounting Pronouncements [Text Block]	RECENT ACCOUNTING PRONOUNCEMENTS Standard Description Date of adoption Effect on the financial statements or other significant matters Standards not yet adopted by the Company ASU 2015-07, Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or its Equivalent), (Topic 820) The guidance eliminates the current requirement to categorize within the fair value hierarchy investments whose fair values are measured at net asset value (“NAV”) using the practical expedient in ASC 820. Fair value disclosure of these investments will be made to facilitate reconciliation to amounts reported on the balance sheet. Other related disclosures will continue when the NAV practical expedient is used. Adoption is retrospective and early adoption is permitted. January 1, 2016 We do not currently expect this new disclosure guidance will have a material impact on the Company’s financial statements. Standard Description Date of adoption Effect on the financial statements or other significant matters Standards not yet adopted by the Company (continued) ASU 2015-05, Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement (Subtopic 350-40) The standard provides guidance to determine whether an arrangement includes a software license. If it does, the customer accounts for it the same way as for other software licenses. If no software license is included, the customer accounts for it as a service contract. Adoption may be retrospective or prospective. Early adoption is permitted. January 1, 2016 We are currently evaluating the impact this new guidance may have on the Company’s financial statements. ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs (Subtopic 835-30) The standard requires that debt issuance costs be presented in the balance sheet as a direct deduction from the carrying amount of the associated debt liability, consistent with debt discounts. Adoption is retrospective and early adoption is permitted. January 1, 2016 We currently include debt issuance costs in other assets. The amount to be reclassified to the debt liability is not material to the Company’s financial statements. ASU 2015-02, Amendments to the Consolidation Analysis (Topic 810) The new standard changes certain criteria in the variable interest model and the voting model to determine whether certain legal entities are variable interest entities (“VIEs”) and whether they should be consolidated. Additional disclosures are required for entities not currently considered VIEs, but may become VIEs under the new guidance and may be subject to consolidation. Adoption may be retrospective or modified retrospective with a cumulative effect adjustment. Early adoption is permitted. January 1, 2016 We currently do not consolidate any VIEs and do not expect this new guidance will have a material impact on the Company’s financial statements. ASU 2014-09, Revenue from Contracts with Customers (Topic 606) The core principle is that a company will recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. The banking industry does not expect significant changes because major sources of revenue are from financial instruments that have been excluded from the scope of the new standard, (including loans, derivatives, debt and equity securities, etc.). However, the new standard affects other fees charged by banks, such as asset management fees, credit card interchange fees, deposit account fees, etc. Adoption may be made on a full retrospective basis with practical expedients, or on a modified retrospective basis with a cumulative effect adjustment. Early adoption of the guidance is permitted as of January 1, 2017. January 1, 2018, as extended in August 2015 by ASU 2015-14 While we currently do not expect this standard will have a material impact on the Company’s financial statements, we are still in process of conducting our evaluation. Standards adopted by the Company ASU 2014-14, Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure (Subtopic 310-40) The standard addresses the classification of certain foreclosed mortgage loans fully or partially guaranteed under government programs. Under certain such programs, qualifying creditors can extend mortgage loans with a guarantee entitling the creditor to recover all or a portion of the unpaid principal balance from the government if the borrower defaults. A separate other receivable is established that is measured based on the amount of the loans expected to be recovered. January 1, 2015 Our adoption of this standard had no impact on the accompanying financial statements. Standard Description Date of adoption Effect on the financial statements or other significant matters Standards adopted by the Company (continued) ASU 2014-04, Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure (Subtopic 310-40) The standard clarifies that a creditor should be considered to have physical possession of a residential real estate property collateralizing a residential mortgage loan and thus would reclassify the loan to other real estate owned when certain conditions are satisfied. Additional financial statement disclosures will be required. January 1, 2015 Our adoption of this standard added a nominal amount of additional disclosure to Note 6. ASU 2014-01, Accounting for Investments in Qualified Affordable Housing Projects (Topic 323) The standard revised conditions an entity must meet to elect the effective yield method when accounting for qualified affordable housing project investments. The EITF final consensus changed the method of amortizing a Low-Income Housing Tax Credit (“LIHTC”) investment from the effective yield method to a proportional amorti-zation method. Amortization would be proportional to the tax credits and tax benefits received but, under a practical expedient available in certain circumstances, amortization could be proportional to only the tax credits. Reporting entities that invest in LIHTC investments through a limited liability entity could elect the proportional amortization method if certain conditions are met. January 1, 2015 Our adoption of this standard did not have a material impact on the accompanying financial statements.

Supplemental Cash Flow Informat

Supplemental Cash Flow Information	9 Months Ended
	Sep. 30, 2015
Supplemental Cash Flow Information [Abstract]
Cash Flow, Supplemental Disclosures [Text Block]	. SUPPLEMENTAL CASH FLOW INFORMATION Noncash activities are summarized as follows: (In thousands) Three Months Ended Nine Months Ended 2015 2014 2015 2014 Loans and leases transferred to other real estate owned $ 3,446 $ 8,954 $ 10,098 $ 20,197 Loans held for sale reclassified as loans and leases 22,299 9,658 33,042 14,739 Amortized cost of HTM securities reclassified as AFS securities — — 79,276 —

Offsetting Assets and Liabiliti

Offsetting Assets and Liabilities (Notes)	9 Months Ended
	Sep. 30, 2015
Offsetting Assets and Liabilities [Abstract]
Cash, Cash Equivalents, and Short-term Investments [Text Block]	OFFSETTING ASSETS AND LIABILITIES Gross and net information for selected financial instruments in the balance sheet is as follows: September 30, 2015 (In thousands) Gross amounts not offset in the balance sheet Description Gross amounts recognized Gross amounts offset in the balance sheet Net amounts presented in the balance sheet Financial instruments Cash collateral received/pledged Net amount Assets: Federal funds sold and security resell agreements $ 1,325,501 $ — $ 1,325,501 $ — $ — $ 1,325,501 Derivatives (included in other assets) 103,119 — 103,119 (17,207 ) — 85,912 $ 1,428,620 $ — $ 1,428,620 $ (17,207 ) $ — $ 1,411,413 Liabilities: Federal funds and other short-term borrowings $ 272,391 $ — $ 272,391 $ — $ — $ 272,391 Derivatives (included in other liabilities) 86,363 — 86,363 (17,207 ) (37,109 ) 32,047 $ 358,754 $ — $ 358,754 $ (17,207 ) $ (37,109 ) $ 304,438 December 31, 2014 (In thousands) Gross amounts not offset in the balance sheet Description Gross amounts recognized Gross amounts offset in the balance sheet Net amounts presented in the balance sheet Financial instruments Cash collateral received/pledged Net amount Assets: Federal funds sold and security resell agreements $ 1,386,291 $ — $ 1,386,291 $ — $ — $ 1,386,291 Derivatives (included in other assets) 66,420 — 66,420 (3,755 ) 62,665 $ 1,452,711 $ — $ 1,452,711 $ (3,755 ) $ — $ 1,448,956 Liabilities: Federal funds and other short-term borrowings $ 244,223 $ — $ 244,223 $ — $ — $ 244,223 Derivatives (included in other liabilities) 66,064 — 66,064 (3,755 ) (31,968 ) 30,341 $ 310,287 $ — $ 310,287 $ (3,755 ) $ (31,968 ) $ 274,564 Security resell and repurchase agreements are offset, when applicable, in the balance sheet according to master netting agreements. Security repurchase agreements are included with “Federal funds and other short-term borrowings.” Derivative instruments may be offset under their master netting agreements; however, for accounting purposes, we present these items on a gross basis in the Company’s balance sheet. See Note 7 for further information regarding derivative instruments.

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2015
Investments [Abstract]
Investment Securities	INVESTMENTS Investment Securities Investment securities are summarized below. Note 10 discusses the process to estimate fair value for investment securities. September 30, 2015 (In thousands) Amortized cost Gross unrealized gains Gross unrealized losses Estimated fair value Held-to-maturity Municipal securities $ 544,168 $ 9,976 $ 1,056 $ 553,088 Available-for-sale U.S. Government agencies and corporations: Agency securities 1,102,978 7,147 578 1,109,547 Agency guaranteed mortgage-backed securities 2,805,901 12,989 5,619 2,813,271 Small Business Administration loan-backed securities 1,815,766 14,177 10,779 1,819,164 Municipal securities 212,698 1,059 359 213,398 Other debt securities 25,485 187 2,905 22,767 5,962,828 35,559 20,240 5,978,147 Money market mutual funds and other 21,773 91 — 21,864 5,984,601 35,650 20,240 6,000,011 Total $ 6,528,769 $ 45,626 $ 21,296 $ 6,553,099 December 31, 2014 Recognized in OCI 1 Not recognized in OCI (In thousands) Amortized cost Gross unrealized gains Gross unrealized losses Carrying value Gross unrealized gains Gross unrealized losses Estimated fair value Held-to-maturity Municipal securities $ 607,675 $ — $ — $ 607,675 $ 13,018 $ 804 $ 619,889 Asset-backed securities: Trust preferred securities – banks and insurance 79,276 — 39,699 39,577 18,393 663 57,307 686,951 — 39,699 647,252 $ 31,411 $ 1,467 677,196 Available-for-sale U.S. Government agencies and corporations: Agency securities 607,523 1,572 8,343 600,752 600,752 Agency guaranteed mortgage-backed securities 935,164 12,132 2,105 945,191 945,191 Small Business Administration loan-backed securities 1,544,710 16,446 8,891 1,552,265 1,552,265 Municipal securities 189,059 1,143 945 189,257 189,257 Asset-backed securities: Trust preferred securities – banks and insurance 537,589 103 121,984 415,708 415,708 Other 5,252 207 7 5,452 5,452 3,819,297 31,603 142,275 3,708,625 3,708,625 Money market mutual funds and other 136,591 76 1,044 135,623 135,623 3,955,888 31,679 143,319 3,844,248 3,844,248 Total $ 4,642,839 $ 31,679 $ 183,018 $ 4,491,500 $ 4,521,444 1 Other comprehensive income CDO Sales and Paydowns During the second quarter of 2015 , we sold the remaining portfolio of our collateralized debt obligation (“CDO”) securities, or $574 million at amortized cost, and realized net losses of approximately $137 million . During the first quarter of 2015 , we reclassified all of the remaining held-to-maturity (“HTM”) CDO securities, or approximately $79 million at amortized cost, to available-for-sale (“AFS”) securities. The reclassification resulted from increased risk weights for these securities under the new Basel III capital rules, and was made in accordance with applicable accounting guidance that allows for such reclassifications when increased risk weights of debt securities must be used for regulatory risk-based capital purposes. No gain or loss was recognized in the statement of income at the time of reclassification. During the first nine months of 2014 , we recorded a total of $1,294 million par amount of sales and paydowns of CDO securities, resulting in net gains of approximately $22 million . These sales were made in part as a result of the Volcker Rule (“VR”). Maturities The amortized cost and estimated fair value of investment debt securities are shown subsequently as of September 30, 2015 by expected timing of principal payments. Actual principal payments may differ from contractual or expected principal payments because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. Held-to-maturity Available-for-sale (In thousands) Amortized cost Estimated fair value Amortized cost Estimated fair value Principal return in one year or less $ 88,169 $ 88,714 $ 822,647 $ 824,744 Principal return after one year through five years 168,734 171,164 2,314,091 2,319,836 Principal return after five years through ten years 152,942 158,331 1,857,898 1,862,624 Principal return after ten years 134,323 134,879 968,192 970,943 $ 544,168 $ 553,088 $ 5,962,828 $ 5,978,147 The following is a summary of the amount of gross unrealized losses for investment securities and the estimated fair value by length of time the securities have been in an unrealized loss position: September 30, 2015 Less than 12 months 12 months or more Total (In thousands) Gross unrealized losses Estimated fair value Gross unrealized losses Estimated fair value Gross unrealized losses Estimated fair value Held-to-maturity Municipal securities $ 901 $ 55,763 $ 155 $ 11,681 $ 1,056 $ 67,444 Available-for-sale U.S. Government agencies and corporations: Agency securities 65 34,737 513 137,964 578 172,701 Agency guaranteed mortgage-backed securities 5,361 1,330,271 258 15,351 5,619 1,345,622 Small Business Administration loan-backed securities 4,550 453,651 6,229 452,275 10,779 905,926 Municipal securities 305 34,703 54 4,125 359 38,828 Other debt securities — — 2,905 12,097 2,905 12,097 10,281 1,853,362 9,959 621,812 20,240 2,475,174 Total $ 11,182 $ 1,909,125 $ 10,114 $ 633,493 $ 21,296 $ 2,542,618 December 31, 2014 Less than 12 months 12 months or more Total (In thousands) Gross unrealized losses Estimated fair value Gross unrealized losses Estimated fair value Gross unrealized losses Estimated fair value Held-to-maturity Municipal securities $ 527 $ 62,762 $ 277 $ 14,003 $ 804 $ 76,765 Asset-backed securities: Trust preferred securities – banks and insurance 53 122 40,309 57,186 40,362 57,308 580 62,884 40,586 71,189 41,166 134,073 Available-for-sale U.S. Government agencies and corporations: Agency securities 4,510 295,694 3,833 101,188 8,343 396,882 Agency guaranteed mortgage-backed securities 1,914 425,114 191 12,124 2,105 437,238 Small Business Administration loan-backed securities 5,869 495,817 3,022 175,523 8,891 671,340 Municipal securities 258 36,551 687 4,616 945 41,167 Asset-backed securities: Trust preferred securities – banks and insurance — — 121,984 405,605 121,984 405,605 Other 7 1,607 — — 7 1,607 12,558 1,254,783 129,717 699,056 142,275 1,953,839 Money market mutual funds and other 1,044 71,907 — — 1,044 71,907 13,602 1,326,690 129,717 699,056 143,319 2,025,746 Total $ 14,182 $ 1,389,574 $ 170,303 $ 770,245 $ 184,485 $ 2,159,819 At September 30, 2015 and December 31, 2014 , respectively, 146 and 153 HTM and 460 and 458 AFS investment securities were in an unrealized loss position. Other-Than-Temporary Impairment Ongoing Policy We review investment securities on a quarterly basis for the presence of other-than-temporary impairment (“OTTI”). We assess whether OTTI is present when the fair value of a debt security is less than its amortized cost basis at the balance sheet date (the majority of the investment portfolio are debt securities). Under these circumstances, OTTI is considered to have occurred if (1) we have formed a documented intent to sell identified securities or initiated such sales; (2) it is “more likely than not” we will be required to sell the security before recovery of its amortized cost basis; or (3) the present value of expected cash flows is not sufficient to recover the entire amortized cost basis. Noncredit-related OTTI in securities we intend to sell is recognized in earnings as is any credit-related OTTI in securities, regardless of our intent. Noncredit-related OTTI on AFS securities not expected to be sold is recognized in OCI. The amount of noncredit-related OTTI in a security is quantified as the difference in a security’s amortized cost after adjustment for credit impairment, and its lower fair value. Presentation of OTTI is made in the statement of income on a gross basis with an offset for the amount of OTTI recognized in OCI. OTTI Conclusions Our 2014 Annual Report on Form 10-K describes in more detail our OTTI evaluation process. The following summarizes the conclusions from our OTTI evaluation by each security type that has significant gross unrealized losses at September 30, 2015 : OTTI – U.S. Government Agencies and Corporations Agency Guaranteed Mortgage-Backed Securities: These pass-through securities are comprised largely of fixed and floating-rate residential mortgage-backed securities issued by the Government National Mortgage Association (“GNMA”), the Federal National Mortgage Association, or the Federal Home Loan Mortgage Corporation. They were generally purchased at premiums with maturity dates from 10 to 15 years for fixed-rate securities and 30 years for floating-rate securities. These securities benefit from certain guarantee provisions or, in the case of GNMA, direct U.S. government guarantees. Unrealized losses relate to changes in interest rates subsequent to purchase and are not attributable to credit. At September 30, 2015 , we did not have an intent to sell identified securities with unrealized losses or initiate such sales, and we believe it is more likely than not we would not be required to sell such securities before recovery of their amortized cost basis. Therefore, we did not record OTTI for these securities during the third quarter of 2015 . Small Business Administration (“SBA”) Loan-Backed Securities: These securities were generally purchased at premiums with maturities from 5 to 25 years and have principal cash flows guaranteed by the SBA. Unrealized losses relate to changes in interest rates subsequent to purchase and are not attributable to credit. At September 30, 2015 , we did not have an intent to sell identified SBA securities with unrealized losses or initiate such sales, and we believe it is more likely than not we would not be required to sell such securities before recovery of their amortized cost basis. Therefore, we did not record OTTI for these securities during the third quarter of 2015 . The following is a tabular rollforward of the total amount of credit-related OTTI: (In thousands) Three Months Ended Nine Months Ended HTM AFS Total HTM AFS Total Balance of credit-related OTTI at beginning of period $ — $ — $ — $ (9,079 ) $ (95,472 ) $ (104,551 ) Reductions for securities sold or paid off during the period — — — — 104,551 104,551 Reclassification of securities from HTM to AFS — — — 9,079 (9,079 ) — Balance of credit-related OTTI at end of period $ — $ — $ — $ — $ — $ — (In thousands) Three Months Ended Nine Months Ended HTM AFS Total HTM AFS Total Balance of credit-related OTTI at beginning of period $ (9,079 ) $ (163,914 ) $ (172,993 ) $ (9,052 ) $ (176,833 ) $ (185,885 ) Additions recognized in earnings during the period: Additional credit-related OTTI on securities previously impaired — — — (27 ) — (27 ) Reductions for securities sold or paid off during the period — 44,929 44,929 — 57,848 57,848 Balance of credit-related OTTI at end of period $ (9,079 ) $ (118,985 ) $ (128,064 ) $ (9,079 ) $ (118,985 ) $ (128,064 ) The following summarizes gains and losses, including OTTI, that were recognized in the statement of income: Three Months Ended Nine Months Ended September 30, 2015 September 30, 2014 September 30, 2015 September 30, 2014 (In thousands) Gross gains Gross losses Gross gains Gross losses Gross gains Gross losses Gross gains Gross losses Investment securities: Held-to-maturity $ — $ — $ 2 $ — $ 1 $ — $ 2 $ 27 Available-for-sale 6 59 5,873 20,063 8,366 147,572 83,466 62,948 Other noninterest-bearing investments 14,267 10,637 5,911 5,184 23,870 11,571 10,568 5,184 14,273 10,696 11,786 25,247 32,237 159,143 94,036 68,159 Net gains (losses) $ 3,577 $ (13,461 ) $ (126,906 ) $ 25,877 Statement of income information: Net impairment losses on investment securities $ — $ — $ — $ (27 ) Equity securities gains, net 3,630 440 11,822 3,865 Fixed income securities gains (losses), net (53 ) (13,901 ) (138,728 ) 22,039 Net gains (losses) $ 3,577 $ (13,461 ) $ (126,906 ) $ 25,877 Interest income by security type is as follows: (In thousands) Three Months Ended Nine Months Ended Taxable Nontaxable Total Taxable Nontaxable Total Investment securities: Held-to-maturity $ 3,031 $ 2,629 $ 5,660 $ 9,716 $ 8,265 $ 17,981 Available-for-sale 23,427 699 24,126 64,832 2,047 66,879 Trading 445 — 445 1,653 — 1,653 $ 26,903 $ 3,328 $ 30,231 $ 76,201 $ 10,312 $ 86,513 (In thousands) Three Months Ended Nine Months Ended Taxable Nontaxable Total Taxable Nontaxable Total Investment securities: Held-to-maturity $ 3,597 $ 2,805 $ 6,402 $ 11,146 $ 8,448 $ 19,594 Available-for-sale 16,895 677 17,572 54,099 1,829 55,928 Trading 403 — 403 1,451 — 1,451 $ 20,895 $ 3,482 $ 24,377 $ 66,696 $ 10,277 $ 76,973 Investment securities with a carrying value of $1.9 billion at September 30, 2015 and $1.4 billion at December 31, 2014 were pledged to secure public and trust deposits, advances, and for other purposes as required by law. Securities are also pledged as collateral for security repurchase agreements. Private Equity Investments Effect of Volcker Rule The VR, as published pursuant to the Dodd-Frank Act in December 2013 and amended in January 2014, significantly restricted certain activities by covered bank holding companies, including restrictions on certain types of securities, proprietary trading, and private equity investing. The Company’s private equity investments (“PEIs”) consist of Small Business Investment Companies (“SBICs”) and non-SBICs. Following the sales of its CDO securities, the only prohibited investments under the VR requiring divestiture by the Company were certain of its PEIs. Of the recorded PEIs of $140 million at September 30, 2015 , approximately $24 million remain prohibited by the VR. As of September 30, 2015 , we have sold a total of approximately $17 million of PEIs, including $9 million during the first half of 2015 and $8 million during 2014 . None were sold during the third quarter of 2015 . All of these sales related to prohibited PEIs. The 2015 sales resulted in insignificant amounts of realized gains or losses. We will dispose of the remaining $24 million of prohibited PEIs before the required deadline. However, the required deadline has been extended to July 21, 2016 from July 21, 2015 and the Federal Reserve has announced its intention to act in 2015 to grant an additional one-year extension to July 21, 2017. See other discussions in Notes 10 and 11. As discussed in Note 11, we have $48 million at September 30, 2015 of unfunded commitments for PEIs, of which approximately $8 million relate to prohibited PEIs. Until we dispose of the prohibited PEIs, we expect to fund these commitments if and as the capital calls are made, as allowed under the VR.

Loans And Allowance For Credit

Loans And Allowance For Credit Losses	9 Months Ended
	Sep. 30, 2015
Loans And Allowance For Credit Losses [Abstract]
Loans And Allowance For Credit Losses	LOANS AND ALLOWANCE FOR CREDIT LOSSES Loans and Loans Held for Sale Loans are summarized as follows according to major portfolio segment and specific loan class: (In thousands) September 30, December 31, Loans held for sale $ 139,122 $ 132,504 Commercial: Commercial and industrial $ 13,035,251 $ 13,162,955 Leasing 426,781 408,974 Owner occupied 7,141,360 7,351,548 Municipal 600,258 520,887 Total commercial 21,203,650 21,444,364 Commercial real estate: Construction and land development 2,213,465 1,986,408 Term 8,089,258 8,126,600 Total commercial real estate 10,302,723 10,113,008 Consumer: Home equity credit line 2,347,061 2,321,150 1-4 family residential 5,268,840 5,200,882 Construction and other consumer real estate 370,015 370,542 Bankcard and other revolving plans 427,849 401,352 Other 192,985 212,360 Total consumer 8,606,750 8,506,286 Total loans $ 40,113,123 $ 40,063,658 Loan balances are presented net of unearned income and fees, which amounted to $144.1 million at September 30, 2015 and $144.7 million at December 31, 2014 . Owner occupied and commercial real estate (“CRE”) loans include unamortized premiums of approximately $28.8 million at September 30, 2015 and $36.5 million at December 31, 2014 . Municipal loans generally include loans to municipalities with the debt service being repaid from general funds or pledged revenues of the municipal entity, or to private commercial entities or 501(c)(3) not-for-profit entities utilizing a pass-through municipal entity to achieve favorable tax treatment. Land development loans included in the construction and land development loan class were $383.1 million at September 30, 2015 and $484.9 million at December 31, 2014 . Loans with a carrying value of approximately $22.3 billion at September 30, 2015 and $22.5 billion at December 31, 2014 have been pledged at the Federal Reserve and various Federal Home Loan Banks (“FHLBs”) as collateral for potential borrowings. We sold loans with a carrying value of $434.1 million and $1,070.2 million for the three and nine months ended September 30, 2015 , and $341.3 million and $939.0 million , for the three and nine months ended September 30, 2014 , respectively, that were classified as loans held for sale. The sold loans were derecognized from the balance sheet. Loans classified as loans held for sale primarily consist of conforming residential mortgages and the guaranteed portion of SBA loans. The principal balance of sold loans for which we retain servicing was approximately $1.2 billion at both September 30, 2015 and December 31, 2014 . Amounts added to loans held for sale during these periods were $442.4 million and $1,111.0 million for the three and nine months ended September 30, 2015 , and $297.8 million and $894.9 million for the three and nine months ended September 30, 2014 , respectively. Income from loans sold, excluding servicing, was $5.0 million and $13.9 million for the three and nine months ended September 30, 2015 , and $4.2 million and $11.3 million for the three and nine months ended September 30, 2014 , respectively. Since 2009, CB&T and NSB have had loss sharing agreements with the Federal Deposit Insurance Corporation (“FDIC”), which provided indemnification for credit losses of acquired loans and foreclosed assets up to specified thresholds. The last of the agreements for commercial loans, which comprised the major portion of the acquired portfolio, expired as of September 30, 2014. The agreements for 1-4 family residential loans will expire in 2019. In previous periods, the FDIC-supported loan balances were presented separately in this footnote and in other disclosures, and included purchased credit-impaired (“PCI”) loans, as subsequently discussed in Purchased Loans. Due to declining balances, for all periods presented herein, the FDIC-supported/PCI loans have been reclassified to their respective loan segments and classes. Allowance for Credit Losses The allowance for credit losses (“ACL”) consists of the allowance for loan and lease losses (“ALLL”) (also referred to as the allowance for loan losses) and the reserve for unfunded lending commitments (“RULC”). Allowance for Loan and Lease Losses The ALLL represents our estimate of probable and estimable losses inherent in the loan and lease portfolio as of the balance sheet date. Losses are charged to the ALLL when recognized. Generally, commercial and CRE loans are charged off or charged down when they are determined to be uncollectible in whole or in part, or when 180 days past due unless the loan is well secured and in process of collection. Consumer loans are either charged off or charged down to net realizable value no later than the month in which they become 180 days past due. Closed-end consumer loans that are not secured by residential real estate are either charged off or charged down to net realizable value no later than the month in which they become 120 days past due. We establish the amount of the ALLL by analyzing the portfolio at least quarterly, and we adjust the provision for loan losses so the ALLL is at an appropriate level at the balance sheet date. We determine our ALLL as the best estimate within a range of estimated losses. The methodologies we use to estimate the ALLL depend upon the impairment status and portfolio segment of the loan. The methodology for impaired loans is discussed subsequently. For the commercial and CRE segments, we use a comprehensive loan grading system to assign probability of default (“PD”) and loss given default (“LGD”) grades to each loan. The credit quality indicators discussed subsequently are based on this grading system. In addition, loan officers utilize their experience and judgment in assigning PD and LGD grades, subject to confirmation of the PD and LGD by either credit risk or credit examination. We create groupings of these grades for each subsidiary bank and loan class and calculate historic loss rates using a loss migration analysis that attributes historic realized losses to these loan grade groupings over the period of January 2008 through the most recent full quarter. For the consumer loan segment, we use roll rate models to forecast probable inherent losses. Roll rate models measure the rate at which consumer loans migrate from one delinquency category to the next worse delinquency category, and eventually to loss. We estimate roll rates for consumer loans using recent delinquency and loss experience by segmenting our consumer loan portfolio into separate pools based on common risk characteristics and separately calculating historical delinquency and loss experience for each pool. These roll rates are then applied to current delinquency levels to estimate probable inherent losses. When long-term average losses exceed those losses estimated through roll rates, we use long-term average loss rates for the applicable pools. Roll rates incorporate housing market trends inasmuch as these trends manifest themselves in charge-offs and delinquencies. In addition, our qualitative and environmental factors discussed subsequently incorporate the most recent housing market trends. The current status and historical changes in qualitative and environmental factors may not be reflected in our quantitative models. Thus, after applying historical loss experience, as described above, we review the quantitatively derived level of ALLL for each segment using qualitative criteria and use those criteria to determine our estimate within the range. We track various risk factors that influence our judgment regarding the level of the ALLL across the portfolio segments. These factors primarily include: • Asset quality trends • Risk management and loan administration practices • Risk identification practices • Effect of changes in the nature and volume of the portfolio • Existence and effect of any portfolio concentrations • National economic and business conditions • Regional and local economic and business conditions • Data availability and applicability • Effects of other external factors The magnitude of the impact of these factors on our qualitative assessment of the ALLL changes from quarter to quarter according to changes made by management in its assessment of these factors, the extent these factors are already reflected in historic loss rates, and the extent changes in these factors diverge from one to another. We also consider the uncertainty inherent in the estimation process when evaluating the ALLL. Reserve for Unfunded Lending Commitments We also estimate a reserve for potential losses associated with off-balance sheet commitments, including standby letters of credit. We determine the RULC using the same procedures and methodologies that we use for the ALLL. The loss factors used in the RULC are the same as the loss factors used in the ALLL, and the qualitative adjustments used in the RULC are the same as the qualitative adjustments used in the ALLL. We adjust the Company’s unfunded lending commitments that are not unconditionally cancelable to an outstanding amount equivalent using credit conversion factors, and we apply the loss factors to the outstanding equivalents. Changes in the allowance for credit losses are summarized as follows: Three Months Ended September 30, 2015 (In thousands) Commercial Commercial real estate Consumer Total Allowance for loan losses Balance at beginning of period $ 437,770 $ 125,796 $ 45,809 $ 609,375 Additions: Provision for loan losses 22,417 (6,621 ) 2,466 18,262 Adjustment for FDIC-supported/PCI loans — — — — Deductions: Gross loan and lease charge-offs (36,961 ) (1,068 ) (4,330 ) (42,359 ) Recoveries 4,471 4,162 2,529 11,162 Net loan and lease charge-offs (32,490 ) 3,094 (1,801 ) (31,197 ) Balance at end of period $ 427,697 $ 122,269 $ 46,474 $ 596,440 Reserve for unfunded lending commitments Balance at beginning of period $ 60,774 $ 18,639 $ 548 $ 79,961 Provision charged (credited) to earnings 2,808 (1,467 ) 87 1,428 Balance at end of period $ 63,582 $ 17,172 $ 635 $ 81,389 Total allowance for credit losses at end of period Allowance for loan losses $ 427,697 $ 122,269 $ 46,474 $ 596,440 Reserve for unfunded lending commitments 63,582 17,172 635 81,389 Total allowance for credit losses $ 491,279 $ 139,441 $ 47,109 $ 677,829 Nine Months Ended September 30, 2015 (In thousands) Commercial Commercial real estate Consumer Total Allowance for loan losses Balance at beginning of period $ 412,514 $ 145,009 $ 47,140 $ 604,663 Additions: Provision for loan losses 53,292 (38,491 ) 2,533 17,334 Adjustment for FDIC-supported/PCI loans (57 ) 57 — — Deductions: Gross loan and lease charge-offs (76,734 ) (5,637 ) (11,224 ) (93,595 ) Recoveries 38,682 21,331 8,025 68,038 Net loan and lease charge-offs (38,052 ) 15,694 (3,199 ) (25,557 ) Balance at end of period $ 427,697 $ 122,269 $ 46,474 $ 596,440 Reserve for unfunded lending commitments Balance at beginning of period $ 58,931 $ 21,517 $ 628 $ 81,076 Provision charged (credited) to earnings 4,651 (4,345 ) 7 313 Balance at end of period $ 63,582 $ 17,172 $ 635 $ 81,389 Total allowance for credit losses at end of period Allowance for loan losses $ 427,697 $ 122,269 $ 46,474 $ 596,440 Reserve for unfunded lending commitments 63,582 17,172 635 81,389 Total allowance for credit losses $ 491,279 $ 139,441 $ 47,109 $ 677,829 Three Months Ended September 30, 2014 (In thousands) Commercial Commercial real estate Consumer Total Allowance for loan losses Balance at beginning of period $ 442,965 $ 187,940 $ 45,002 $ 675,907 Additions: Provision for loan losses (19,960 ) (34,187 ) (496 ) (54,643 ) Adjustment for FDIC-supported/PCI loans (25 ) — — (25 ) Deductions: Gross loan and lease charge-offs (20,084 ) (3,320 ) (3,067 ) (26,471 ) Recoveries 9,149 3,332 3,028 15,509 Net loan and lease charge-offs (10,935 ) 12 (39 ) (10,962 ) Balance at end of period $ 412,045 $ 153,765 $ 44,467 $ 610,277 Reserve for unfunded lending commitments Balance at beginning of period $ 52,801 $ 38,689 $ 3,982 $ 95,472 Provision charged (credited) to earnings 1,651 (14,390 ) (3,356 ) (16,095 ) Balance at end of period $ 54,452 $ 24,299 $ 626 $ 79,377 Total allowance for credit losses at end of period Allowance for loan losses $ 412,045 $ 153,765 $ 44,467 $ 610,277 Reserve for unfunded lending commitments 54,452 24,299 626 79,377 Total allowance for credit losses $ 466,497 $ 178,064 $ 45,093 $ 689,654 Nine Months Ended September 30, 2014 (In thousands) Commercial Commercial real estate Consumer Total Allowance for loan losses Balance at beginning of period $ 469,213 $ 216,012 $ 61,066 $ 746,291 Additions: Provision for loan losses (38,274 ) (57,350 ) (14,045 ) (109,669 ) Adjustment for FDIC-supported/PCI loans (1,190 ) — (96 ) (1,286 ) Deductions: Gross loan and lease charge-offs (45,903 ) (14,135 ) (10,628 ) (70,666 ) Recoveries 28,199 9,238 8,170 45,607 Net loan and lease charge-offs (17,704 ) (4,897 ) (2,458 ) (25,059 ) Balance at end of period $ 412,045 $ 153,765 $ 44,467 $ 610,277 Reserve for unfunded lending commitments Balance at beginning of period $ 48,345 $ 37,485 $ 3,875 $ 89,705 Provision charged (credited) to earnings 6,107 (13,186 ) (3,249 ) (10,328 ) Balance at end of period $ 54,452 $ 24,299 $ 626 $ 79,377 Total allowance for credit losses at end of period Allowance for loan losses $ 412,045 $ 153,765 $ 44,467 $ 610,277 Reserve for unfunded lending commitments 54,452 24,299 626 79,377 Total allowance for credit losses $ 466,497 $ 178,064 $ 45,093 $ 689,654 The ALLL and outstanding loan balances according to the Company’s impairment method are summarized as follows: September 30, 2015 (In thousands) Commercial Commercial real estate Consumer Total Allowance for loan losses: Individually evaluated for impairment $ 32,191 $ 2,898 $ 11,014 $ 46,103 Collectively evaluated for impairment 394,836 119,286 35,010 549,132 Purchased loans with evidence of credit deterioration 670 85 450 1,205 Total $ 427,697 $ 122,269 $ 46,474 $ 596,440 Outstanding loan balances: Individually evaluated for impairment $ 279,928 $ 122,063 $ 92,612 $ 494,603 Collectively evaluated for impairment 20,859,442 10,122,697 8,503,160 39,485,299 Purchased loans with evidence of credit deterioration 64,280 57,963 10,978 133,221 Total $ 21,203,650 $ 10,302,723 $ 8,606,750 $ 40,113,123 December 31, 2014 (In thousands) Commercial Commercial real estate Consumer Total Allowance for loan losses: Individually evaluated for impairment $ 28,627 $ 4,027 $ 9,059 $ 41,713 Collectively evaluated for impairment 382,552 140,090 37,508 560,150 Purchased loans with evidence of credit deterioration 1,335 892 573 2,800 Total $ 412,514 $ 145,009 $ 47,140 $ 604,663 Outstanding loan balances: Individually evaluated for impairment $ 259,207 $ 167,435 $ 95,267 $ 521,909 Collectively evaluated for impairment 21,105,217 9,861,862 8,395,371 39,362,450 Purchased loans with evidence of credit deterioration 79,940 83,711 15,648 179,299 Total $ 21,444,364 $ 10,113,008 $ 8,506,286 $ 40,063,658 Nonaccrual and Past Due Loans Loans are generally placed on nonaccrual status when payment in full of principal and interest is not expected, or the loan is 90 days or more past due as to principal or interest, unless the loan is both well secured and in the process of collection. Factors we consider in determining whether a loan is placed on nonaccrual include delinquency status, collateral value, borrower or guarantor financial statement information, bankruptcy status, and other information which would indicate that the full and timely collection of interest and principal is uncertain. A nonaccrual loan may be returned to accrual status when all delinquent interest and principal become current in accordance with the terms of the loan agreement; the loan, if secured, is well secured; the borrower has paid according to the contractual terms for a minimum of six months; and analysis of the borrower indicates a reasonable assurance of the ability and willingness to maintain payments. Payments received on nonaccrual loans are applied as a reduction to the principal outstanding. Closed-end loans with payments scheduled monthly are reported as past due when the borrower is in arrears for two or more monthly payments. Similarly, open-end credit such as charge-card plans and other revolving credit plans are reported as past due when the minimum payment has not been made for two or more billing cycles. Other multi-payment obligations (i.e., quarterly, semiannual, etc.), single payment, and demand notes are reported as past due when either principal or interest is due and unpaid for a period of 30 days or more. Nonaccrual loans are summarized as follows: (In thousands) September 30, December 31, Commercial: Commercial and industrial $ 167,136 $ 105,591 Leasing 306 295 Owner occupied 76,624 87,243 Municipal 967 1,056 Total commercial 245,033 194,185 Commercial real estate: Construction and land development 15,202 23,880 Term 39,053 25,107 Total commercial real estate 54,255 48,987 Consumer: Home equity credit line 9,792 11,430 1-4 family residential 48,592 49,861 Construction and other consumer real estate 765 1,735 Bankcard and other revolving plans 563 196 Other 272 254 Total consumer loans 59,984 63,476 Total $ 359,272 $ 306,648 Past due loans (accruing and nonaccruing) are summarized as follows: September 30, 2015 (In thousands) Current 30-89 days past due 90+ days past due Total past due Total loans Accruing loans 90+ days past due Nonaccrual loans that are current 1 Commercial: Commercial and industrial $ 12,909,622 $ 79,246 $ 46,383 $ 125,629 $ 13,035,251 $ 4,951 $ 90,584 Leasing 423,071 3,557 153 3,710 426,781 — 55 Owner occupied 7,077,386 33,198 30,776 63,974 7,141,360 5,443 46,283 Municipal 600,210 48 — 48 600,258 — 967 Total commercial 21,010,289 116,049 77,312 193,361 21,203,650 10,394 137,889 Commercial real estate: Construction and land development 2,195,193 12,447 5,825 18,272 2,213,465 2,296 10,914 Term 8,039,923 15,578 33,757 49,335 8,089,258 20,503 23,188 Total commercial real estate 10,235,116 28,025 39,582 67,607 10,302,723 22,799 34,102 Consumer: Home equity credit line 2,336,740 4,694 5,627 10,321 2,347,061 — 2,592 1-4 family residential 5,231,005 10,137 27,698 37,835 5,268,840 877 18,739 Construction and other consumer real estate 364,283 5,524 208 5,732 370,015 — 401 Bankcard and other revolving plans 425,041 1,621 1,187 2,808 427,849 787 114 Other 192,042 877 66 943 192,985 — 46 Total consumer loans 8,549,111 22,853 34,786 57,639 8,606,750 1,664 21,892 Total $ 39,794,516 $ 166,927 $ 151,680 $ 318,607 $ 40,113,123 $ 34,857 $ 193,883 December 31, 2014 (In thousands) Current 30-89 days past due 90+ days past due Total past due Total loans Accruing loans 90+ days past due Nonaccrual loans that are current 1 Commercial: Commercial and industrial $ 13,092,731 $ 28,295 $ 41,929 $ 70,224 $ 13,162,955 $ 4,677 $ 64,385 Leasing 408,724 225 25 250 408,974 — 270 Owner occupied 7,275,842 29,182 46,524 75,706 7,351,548 3,334 39,649 Municipal 520,887 — — — 520,887 — 1,056 Total commercial 21,298,184 57,702 88,478 146,180 21,444,364 8,011 105,360 Commercial real estate: Construction and land development 1,972,206 2,711 11,491 14,202 1,986,408 92 12,481 Term 8,082,940 14,415 29,245 43,660 8,126,600 19,700 13,787 Total commercial real estate 10,055,146 17,126 40,736 57,862 10,113,008 19,792 26,268 Consumer: Home equity credit line 2,309,967 4,503 6,680 11,183 2,321,150 1 1,779 1-4 family residential 5,163,610 12,416 24,856 37,272 5,200,882 318 20,599 Construction and other consumer real estate 359,723 9,675 1,144 10,819 370,542 160 608 Bankcard and other revolving plans 397,882 2,425 1,045 3,470 401,352 946 80 Other 211,560 644 156 800 212,360 — 84 Total consumer loans 8,442,742 29,663 33,881 63,544 8,506,286 1,425 23,150 Total $ 39,796,072 $ 104,491 $ 163,095 $ 267,586 $ 40,063,658 $ 29,228 $ 154,778 1 Represents nonaccrual loans that are not past due more than 30 days; however, full payment of principal and interest is still not expected. Credit Quality Indicators In addition to the past due and nonaccrual criteria, we also analyze loans using loan risk grading systems, which vary based on the size and type of credit risk exposure. The internal risk grades assigned to loans follow our definitions of Pass, Special Mention, Substandard, and Doubtful, which are consistent with published definitions of regulatory risk classifications. Definitions of Pass, Special Mention, Substandard, and Doubtful are summarized as follows: Pass – A Pass asset is higher quality and does not fit any of the other categories described below. The likelihood of loss is considered remote. Special Mention – A Special Mention asset has potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or in the bank’s credit position at some future date. Substandard – A Substandard asset is inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Assets so classified have well-defined weaknesses and are characterized by the distinct possibility that the bank may sustain some loss if deficiencies are not corrected. Doubtful – A Doubtful asset has all the weaknesses inherent in a Substandard asset with the added characteristics that the weaknesses make collection or liquidation in full highly questionable and improbable. We generally assign internal risk grades to commercial and CRE loans with commitments equal to or greater than $750,000 based on financial and statistical models, individual credit analysis, and loan officer judgment. For these larger loans, we assign one of multiple grades within the Pass classification or one of the following four grades: Special Mention, Substandard, Doubtful, and Loss. Loss indicates that the outstanding balance has been charged off. We confirm our internal risk grades quarterly, or as soon as we identify information that affects the credit risk of the loan. For consumer loans or certain small commercial loans with commitments equal to or less than $750,000 , we generally assign internal risk grades similar to those described previously based on automated rules that depend on refreshed credit scores, payment performance, and other risk indicators. These are generally assigned either a Pass or Substandard grade and are reviewed as we identify information that might warrant a grade change. Outstanding loan balances (accruing and nonaccruing) categorized by these credit quality indicators are summarized as follows: September 30, 2015 (In thousands) Pass Special Mention Sub- standard Doubtful Total loans Total allowance Commercial: Commercial and industrial $ 12,037,219 $ 281,696 $ 709,086 $ 7,250 $ 13,035,251 Leasing 400,233 3,015 23,533 — 426,781 Owner occupied 6,684,216 142,204 314,940 — 7,141,360 Municipal 599,243 48 967 — 600,258 Total commercial 19,720,911 426,963 1,048,526 7,250 21,203,650 $ 427,697 Commercial real estate: Construction and land development 2,166,381 19,138 27,946 — 2,213,465 Term 7,862,956 59,689 166,613 — 8,089,258 Total commercial real estate 10,029,337 78,827 194,559 — 10,302,723 122,269 Consumer: Home equity credit line 2,333,240 — 13,821 — 2,347,061 1-4 family residential 5,214,015 — 54,825 — 5,268,840 Construction and other consumer real estate 368,363 — 1,652 — 370,015 Bankcard and other revolving plans 425,979 — 1,870 — 427,849 Other 192,564 — 421 — 192,985 Total consumer loans 8,534,161 — 72,589 — 8,606,750 46,474 Total $ 38,284,409 $ 505,790 $ 1,315,674 $ 7,250 $ 40,113,123 $ 596,440 December 31, 2014 (In thousands) Pass Special Mention Sub- standard Doubtful Total loans Total allowance Commercial: Commercial and industrial $ 12,515,846 $ 209,215 $ 426,002 $ 11,892 $ 13,162,955 Leasing 399,032 4,868 5,074 — 408,974 Owner occupied 6,844,310 168,423 338,815 — 7,351,548 Municipal 518,513 1,318 1,056 — 520,887 Total commercial 20,277,701 383,824 770,947 11,892 21,444,364 $ 412,514 Commercial real estate: Construction and land development 1,925,685 8,464 52,259 — 1,986,408 Term 7,802,571 96,347 223,324 4,358 8,126,600 Total commercial real estate 9,728,256 104,811 275,583 4,358 10,113,008 145,009 Consumer: Home equity credit line 2,304,352 — 16,798 — 2,321,150 1-4 family residential 5,138,660 — 62,222 — 5,200,882 Construction and other consumer real estate 367,932 — 2,610 — 370,542 Bankcard and other revolving plans 399,446 — 1,906 — 401,352 Other 211,811 — 549 — 212,360 Total consumer loans 8,422,201 — 84,085 — 8,506,286 47,140 Total $ 38,428,158 $ 488,635 $ 1,130,615 $ 16,250 $ 40,063,658 $ 604,663 Impaired Loans Loans are considered impaired when, based on current information and events, it is probable that we will be unable to collect all amounts due in accordance with the contractual terms of the loan agreement, including scheduled interest payments. For our non-purchased credit-impaired loans, if a nonaccrual loan has a balance greater than $1 million , or if a loan is a troubled debt restructuring (“TDR”), including TDRs that subsequently default, or if the loan is no longer reported as a TDR, we individually evaluate the loan for impairment and estimate a specific reserve for the loan for all portfolio segments under applicable accounting guidance. Smaller nonaccrual loans are pooled for ALLL estimation purposes. PCI loans are included in impaired loans and are accounted for under separate accounting guidance. See subsequent discussion under Purchased Loans. When a loan is impaired, we estimate a specific reserve for the loan based on the projected present value of the loan’s future cash flows discounted at the loan’s effective interest rate, the observable market price of the loan, or the fair value of the loan’s underlying collateral. The process of estimating future cash flows also incorporates the same determining factors discussed previously under nonaccrual loans. When we base the impairment amount on the fair value of the loan’s underlying collateral, we generally charge off the portion of the balance that is impaired, such that these loans do not have a specific reserve in the ALLL. Payments received on impaired loans that are accruing are recognized in interest income, according to the contractual loan agreement. Payments received on impaired loans that are on nonaccrual are not recognized in interest income, but are applied as a reduction to the principal outstanding. The amount of interest income recognized on a cash basis during the time the loans were impaired within the three and nine months ended September 30, 2015 and 2014 was not significant. Information on impaired loans individually evaluated is summarized as follows at September 30, 2015 and December 31, 2014 , including the average recorded investment and interest income recognized for the three and nine months ended September 30, 2015 and 2014 : September 30, 2015 (In thousands) Unpaid principal balance Recorded investment Total recorded investment Related allowance with no allowance with allowance Commercial: Commercial and industrial $ 245,404 $ 37,843 $ 156,665 $ 194,508 $ 26,888 Owner occupied 151,243 83,527 48,400 131,927 5,091 Municipal 1,446 967 — 967 — Total commercial 398,093 122,337 205,065 327,402 31,979 Commercial real estate: Construction and land development 47,876 7,486 23,800 31,286 1,068 Term 138,865 90,294 27,856 118,150 1,463 Total commercial real estate 186,741 97,780 51,656 149,436 2,531 Consumer: Home equity credit line 28,358 20,672 4,703 25,375 419 1-4 family residential 72,855 29,257 40,465 69,722 10,090 Construction and other consumer real estate 2,966 1,069 1,106 2,175 181 Other 3,843 36 3,162 3,198 294 Total consumer loans 108,022 51,034 49,436 100,470 10,984 Total $ 692,856 $ 271,151 $ 306,157 $ 577,308 $ 45,494 December 31, 2014 (In thousands) Unpaid principal balance Recorded investment Total recorded investment Related allowance with no allowance with allowance Commercial: Commercial and industrial $ 185,520 $ 43,257 $ 103,565 $ 146,822 $ 22,852 Owner occupied 198,231 83,179 86,382 169,561 6,087 Municipal 1,535 1,056 — 1,056 — Total commercial 385,286 127,492 189,947 317,439 28,939 Commercial real estate: Construction and land development 60,993 16,500 26,977 43,477 1,773 Term 203,788 96,351 63,740 160,091 2,345 Total commercial real estate 264,781 112,851 90,717 203,568 4,118 Consumer: Home equity credit line 30,209 14,798 11,883 26,681 437 1-4 family residential 86,575 37,096 35,831 72,927 8,494 Construction and other consumer real estate 3,902 1,449 1,410 2,859 233 Other 6,580 — 5,254 5,254 133 Total consumer loans 127,266 53,343 54,378 107,721 9,297 Total $ 777,333 $ 293,686 $ 335,042 $ 628,728 $ 42,354 Three Months Ended Nine Months Ended (In thousands) Average recorded investment Interest income recognized Average recorded investment Interest income recognized Commercial: Commercial and industrial $ 191,642 $ 1,314 $ 158,825 $ 5,525 Owner occupied 138,194 2,752 135,212 9,706 Municipal 978 — 1,007 — Total commercial 330,814 4,066 295,044 15,231 Commercial real estate: Construction and land development 31,506 499 31,920 2,691 Term 119,694 3,705 124,446 13,383 Total commercial real estate 151,200 4,204 156,366 16,074 Consumer: Home equity credit line 25,095 401 24,329 1,206 1-4 family residential 90,240 398 91,671 1,803 Construction and other consumer real estate 5,540 32 2,342 91 Bankcard and other revolving plans — 1 1 101 Other 36 177 4,109 692 Total consumer loans 120,911 1,009 122,452 3,893 Total $ 602,925 $ 9,279 $ 573,862 $ 35,198 Three Months Ended Nine Months Ended (In thousands) Average recorded investment Interest income recognized Average recorded investment Interest income recognized Commercial: Commercial and industrial $ 186,026 $ 2,335 $ 180,130 $ 8,819 Owner occupied 232,484 4,514 235,380 13,774 Municipal 8,798 — 9,343 — Total commercial 427,308 6,849 424,853 22,593 Commercial real estate: Construction and land development 59,735 515 62,404 5,398 Term 225,536 5,670 248,587 26,118 Total commercial real estate 285,271 6,185 310,991 31,516 Consumer: Home equity credit line 26,328 369 25,756 1,139 1-4 family residential 81,116 556 81,168 1,583 Construction and other consumer real estate 3,226 43 3,112 115 Bankcard and other revolving plans — 1 3 2 Other 6,284 384 7,333 1,315 Total consumer loans 116,954 1,353 117,372 4,154 Total $ 829,533 $ 14,387 $ 853,216 $ 58,263 Modified and Restructured Loans Loans may be modified in the normal course of business for competitive reasons or to strengthen the Company’s position. Loan modifications and restructurings may also occur when the borrower experiences financial difficulty and needs temporary or permanent relief from the original contractual terms of the loan. These modifications are structured on a loan-by-loan basis and, depending on the circumstances, may include extended payment terms, a modified interest rate, forgiveness of principal, or other concessions. Loans that have been modified to accommodate a borrower who is experiencing financial difficulties, and for which the Company has granted a concession that it would not otherwise consider, are considered TDRs. We consider many factors in determining whether to agree to a loan modification involving concessions, and seek a solution that will both minimize potential loss to the Company and attempt to help the borrower. We evaluate borrowers’ current and forecasted future cash flows, their ability and willingness to make current contractual or proposed modified payments, the value of the underlying collateral (if applicable), the possibility of obtaining additional security or guarantees, and the potential costs related to a repossession or foreclosure and the subsequent sale of the collateral. TDRs are classified as either accrual or nonaccrual loans. A loan on nonaccrual and restructured as a TDR will remain on nonaccrual status until the borrower has proven the ability to perform under the modified structure for a minimum of six months, and there is evidence that such payments can and are likely to continue as agreed. Performance prior to the restructuring, or significant events that coincide with the restructuring, are included in assessing whether the borrower can meet the new terms and may result in the loan being returned to accrual at the time of restructuring or after a shorter performance period. If the borrower’s ability to meet the revised payment schedule is uncertain, the loan remains classified as a nonaccrual loan. A TDR loan that specifies an interest rate that at the time of the restructuring is greater than or equal to the rate the bank is willing to accept for a new loan with comparable risk

Derivative Instruments And Hedg

Derivative Instruments And Hedging Activities	9 Months Ended
	Sep. 30, 2015
Summary of Derivative Instruments [Abstract]
Derivative Instruments And Hedging Activities	DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES Objectives Our objectives in using derivatives are to add stability to interest income or expense, to modify the duration of specific assets or liabilities as we consider advisable, to manage exposure to interest rate movements or other identified risks, and/or to directly offset derivatives sold to our customers. To accomplish these objectives, we use interest rate swaps as part of our cash flow hedging strategy. These derivatives are used to hedge the variable cash flows associated with designated commercial loans. Interest rate swap agreements designated as cash flow hedges involve the receipt of fixed-rate amounts in exchange for variable rate payments over the life of the agreements without exchange of the underlying principal amount. Derivatives not designated as accounting hedges, including basis swap agreements, are not speculative and are used to economically manage our exposure to interest rate movements and other identified risks, but do not meet the strict hedge accounting requirements. Accounting We record all derivatives on the balance sheet at fair value. Note 10 discusses the process to estimate fair value for derivatives. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative and the resulting designation. Derivatives used to hedge the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivatives used to hedge the exposure to variability in expected cash flows, or other types of forecasted transactions, are considered cash flow hedges. For derivatives designated as fair value hedges, changes in the fair value of the derivative are recognized in earnings together with changes in the fair value of the related hedged item. The net amount, if any, representing hedge ineffectiveness, is reflected in earnings. In previous years, we used fair value hedges to manage interest rate exposure to certain long-term debt. These hedges have been terminated and their remaining balances are being amortized into earnings, as discussed subsequently. For derivatives designated as cash flow hedges, the effective portion of changes in the fair value of the derivative are recorded in OCI and recognized in earnings when the hedged transaction affects earnings. The ineffective portion of changes in the fair value of cash flow hedges is recognized directly in earnings. No derivatives have been designated for hedges of investments in foreign operations. We assess the effectiveness of each hedging relationship by comparing the changes in fair value or cash flows on the derivative hedging instrument with the changes in fair value or cash flows on the designated hedged item or transaction. For derivatives not designated as accounting hedges, changes in fair value are recognized in earnings. The remaining balances of any derivative instruments terminated prior to maturity, including amounts in accumulated other comprehensive income (“AOCI”) for swap hedges, are accreted or amortized to interest income or expense over the period to their previously stated maturity dates. Amounts in AOCI are reclassified to interest income as interest is earned on variable rate loans and as amounts for terminated hedges are accreted or amortized to earnings. For the 12 months following September 30, 2015 , we estimate that an additional $11.6 million will be reclassified. Collateral and Credit Risk Exposure to credit risk arises from the possibility of nonperformance by counterparties. Financial institutions which are well capitalized and well established are the counterparties for those derivatives entered into for asset liability management and to offset derivatives sold to our customers. The Company reduces its counterparty exposure for derivative contracts by centrally clearing all eligible derivatives. For those derivatives that are not centrally cleared, the counterparties are typically financial institutions or customers of the Company. For those that are financial institutions, we manage our credit exposure through the use of a Credit Support Annex (“CSA”) to International Swaps and Derivative Association (“ISDA”) master agreements. Eligible collateral types are documented by the CSA and controlled under the Company’s general credit policies. They are typically monitored on a daily basis. A valuation haircut policy reflects the fact that collateral may fall in value between the date the collateral is called and the date of liquidation or enforcement. In practice, all of the Company’s collateral held as credit risk mitigation under a CSA is cash. We offer interest rate swaps to our customers to assist them in managing their exposure to changing interest rates. Upon issuance, all of these customer swaps are immediately offset through matching derivative contracts, such that the Company minimizes its interest rate risk exposure resulting from such transactions. Most of these customers do not have the capability for centralized clearing. Therefore we manage the credit risk through loan underwriting which includes a credit risk exposure formula for the swap, the same collateral and guarantee protection applicable to the loan and credit approvals, limits, and monitoring procedures. Fee income from customer swaps is included in other service charges, commissions and fees. No significant losses on derivative instruments have occurred as a result of counterparty nonperformance. Nevertheless, the related credit risk is considered and measured when and where appropriate. See Note 6 for further discussion of our underwriting, collateral requirements, and other procedures used to address credit risk. Our derivative contracts require us to pledge collateral for derivatives that are in a net liability position at a given balance sheet date. Certain of these derivative contracts contain credit-risk-related contingent features that include the requirement to maintain a minimum debt credit rating. We may be required to pledge additional collateral if a credit-risk-related feature were triggered, such as a downgrade of our credit rating. However, in past situations, not all counterparties have demanded that additional collateral be pledged when provided for under their contracts. At September 30, 2015 , the fair value of our derivative liabilities was $86.4 million , for which we were required to pledge cash collateral of approximately $61.0 million in the normal course of business. If our credit rating were downgraded one notch by either Standard & Poor’s or Moody’s at September 30, 2015 , the additional amount of collateral we could be required to pledge is approximately $1.9 million . As a result of the Dodd-Frank Act, all newly eligible derivatives entered into are cleared through a central clearinghouse. Derivatives that are centrally cleared do not have credit-risk-related features that require additional collateral if our credit rating were downgraded. Derivative Amounts Selected information with respect to notional amounts and recorded gross fair values at September 30, 2015 and December 31, 2014 , and the related gain (loss) of derivative instruments for the three and nine months ended September 30, 2015 and 2014 is summarized as follows: September 30, 2015 December 31, 2014 Notional amount Fair value Notional amount Fair value (In thousands) Other assets Other liabilities Other assets Other liabilities Derivatives designated as hedging instruments Asset derivatives Cash flow hedges: Interest rate swaps $ 1,387,500 $ 17,367 $ — $ 275,000 $ 1,508 $ 123 Total derivatives designated as hedging instruments 1,387,500 17,367 — 275,000 1,508 123 Derivatives not designated as hedging instruments Interest rate swaps for customers 2 3,237,694 66,805 69,991 2,770,052 48,287 50,669 Foreign exchange 340,818 18,947 16,372 443,721 16,625 15,272 Total derivatives not designated as hedging instruments 3,578,512 85,752 86,363 3,213,773 64,912 65,941 Total derivatives $ 4,966,012 $ 103,119 $ 86,363 $ 3,488,773 $ 66,420 $ 66,064 Three Months Ended September 30, 2015 Nine Months Ended September 30, 2015 Amount of derivative gain (loss) recognized/reclassified (In thousands) OCI Reclassified 3 Noninterest income (expense) Offset to interest expense OCI Reclassified from AOCI to interest income 3 Noninterest income (expense) Offset to interest expense Derivatives designated as hedging instruments Asset derivatives Cash flow hedges 1 : Interest rate swaps $ 17,343 $ 2,957 $ 21,172 $ 5,191 17,343 2,957 21,172 5,191 Liability derivatives Fair value hedges: Terminated swaps on long-term debt $ 431 $ 1,364 Total derivatives designated as hedging instruments 17,343 2,957 431 21,172 5,191 1,364 Derivatives not designated as hedging instruments Interest rate swaps for customers 2 $ 939 $ 5,329 Futures contracts 1 2 Foreign exchange 2,506 6,938 Total derivatives not designated as hedging instruments 3,446 12,269 Total derivatives $ 17,343 $ 2,957 $ 3,446 $ 431 $ 21,172 $ 5,191 $ 12,269 $ 1,364 Three Months Ended September 30, 2014 Nine Months Ended September 30, 2014 Amount of derivative gain (loss) recognized/reclassified (In thousands) OCI Reclassified 3 Noninterest income (expense) Offset to interest expense OCI Reclassified from AOCI to interest income 3 Noninterest income (expense) Offset to interest expense Derivatives designated as hedging instruments Asset derivatives Cash flow hedges 1 : Interest rate swaps $ (845 ) $ 770 $ 1,681 $ 1,698 (845 ) 770 1,681 1,698 Liability derivatives Fair value hedges: Terminated swaps on long-term debt $ 496 $ 1,822 Total derivatives designated as hedging instruments (845 ) 770 496 1,681 1,698 1,822 Derivatives not designated as hedging instruments Interest rate swaps $ 1 $ 355 Interest rate swaps for customers 2 1,419 493 Foreign exchange 2,242 5,951 Total return swap — (7,894 ) Total derivatives not designated as hedging instruments 3,662 (1,095 ) Total derivatives $ (845 ) $ 770 $ 3,662 $ 496 $ 1,681 $ 1,698 $ (1,095 ) $ 1,822 Note: These schedules are not intended to present at any given time the Company’s long/short position with respect to its derivative contracts. 1 Amounts recognized in OCI and reclassified from AOCI represent the effective portion of the derivative gain. 2 Notional amounts include both the customer swaps and the offsetting derivative contracts. 3 Amounts for the three and nine months ended September 30 , of $3.0 million and $5.2 million in 2015 , and $0.8 million and $1.7 million in 2014 , respectively, are the amounts of reclassification to earnings from AOCI presented in Note 8. At September 30, 2015 , the fair value of derivative assets was reduced by a net credit valuation adjustment of $3.0 million . The adjustment for derivative liabilities was not significant. At September 30, 2014 , these same adjustments were $1.7 million and $0.3 million , respectively. These adjustments are required to reflect both our own nonperformance risk and the respective counterparty’s nonperformance risk.

Debt And Shareholders' Equity

Debt And Shareholders' Equity	9 Months Ended
	Sep. 30, 2015
Capitalization, Long-term Debt and Equity [Abstract]
Debt And Shareholders' Equity	DEBT AND SHAREHOLDERS’ EQUITY Long-term debt is summarized as follows: (In thousands) September 30, December 31, 2014 Junior subordinated debentures related to trust preferred securities $ 164,950 $ 168,043 Convertible subordinated notes 70,119 132,838 Subordinated notes 302,102 335,798 Senior notes 406,631 432,385 FHLB advances — 22,156 Capital lease obligations 950 1,062 Total $ 944,752 $ 1,092,282 The preceding carrying values represent the par value of the debt adjusted for any unamortized premium or discount or other basis adjustments, including the value of associated hedges. Debt Redemptions and Maturities During the third quarter of 2015, approximately $109 million carrying value of 6.0% subordinated and convertible subordinated notes matured. During the first half of 2015, we redeemed approximately $27 million of long-term senior notes at their initial call dates, and we redeemed $3.1 million of trust preferred securities and the entire $22 million of FHLB advances; the FHLB redemption resulted in debt extinguishment cost of $2.4 million . On November 16, 2015 , approximately $122 million carrying value at September 30, 2015 of 5.5% subordinated and convertible subordinated notes will mature. Preferred Stock On October, 19 2015 , we announced the commencement of a $180 million cash tender offer to purchase certain outstanding preferred stock and depositary shares. The tender offer will expire on November 16, 2015 . Basel III Capital Framework Effective January 1, 2015, we adopted the new Basel III capital framework that was issued by the Federal Reserve for U.S. banking organizations. We adopted the new capital rules on a 2015 phase-in basis and will adopt the fully phased-in requirements effective January 1, 2019. During the first quarter of 2015, we made the “opt-out” election with respect to the regulatory capital treatment of AOCI under the Basel III framework. Among other things, the new rules revise capital adequacy guidelines and the regulatory framework for prompt corrective action, and they modify specified quantitative measures of our assets, liabilities, and capital. The impact of these new rules will require the Company to maintain capital in excess of current “well-capitalized” regulatory standards. Accumulated Other Comprehensive Income Changes in AOCI by component are as follows: (In thousands) Net unrealized gains (losses) on investment securities Net unrealized gains (losses) on derivatives and other Pension and post-retirement Total Nine Months Ended September 30, 2015 Balance at December 31, 2014 $ (91,921 ) $ 2,226 $ (38,346 ) $ (128,041 ) Other comprehensive income before reclassifications, net of tax 15,398 13,035 — 28,433 Amounts reclassified from AOCI, net of tax 85,845 (3,212 ) — 82,633 Other comprehensive income 101,243 9,823 — 111,066 Balance at September 30, 2015 $ 9,322 $ 12,049 $ (38,346 ) $ (16,975 ) Income tax expense included in other comprehensive income $ 65,549 $ 6,311 $ — $ 71,860 Nine Months Ended September 30, 2014 Balance at December 31, 2013 $ (168,805 ) $ 1,556 $ (24,852 ) $ (192,101 ) Other comprehensive income before reclassifications, net of tax 100,723 678 — 101,401 Amounts reclassified from AOCI, net of tax (19,206 ) (1,021 ) — (20,227 ) Other comprehensive income (loss) 81,517 (343 ) — 81,174 Balance at September 30, 2014 $ (87,288 ) $ 1,213 $ (24,852 ) $ (110,927 ) Income tax expense (benefit) included in other comprehensive income (loss) $ 61,714 $ (214 ) $ — $ 61,500 Amounts reclassified from AOCI 1 Statement of income (SI) Balance sheet (BS) (In thousands) Three Months Ended Nine Months Ended Details about AOCI components 2015 2014 2015 2014 Affected line item Net realized gains (losses) on investment securities $ (53 ) $ (13,901 ) $ (138,728 ) $ 22,039 SI Fixed income securities gains (losses), net Income tax expense (benefit) (20 ) (6,015 ) (52,883 ) 1,981 (33 ) (7,886 ) (85,845 ) 20,058 Net unrealized losses on investment securities — — — (27 ) SI Net impairment losses on investment securities Income tax benefit — — — (10 ) — — — (17 ) Accretion of securities with noncredit-related impairment losses not expected to be sold — (467 ) — (1,411 ) BS Investment securities, held-to-maturity Deferred income taxes — 191 — 576 BS Other assets $ (33 ) $ (8,162 ) $ (85,845 ) $ 19,206 Net unrealized gains on derivative instruments $ 2,957 $ 770 $ 5,191 $ 1,698 SI Interest and fees on loans Income tax expense 1,127 307 1,979 677 $ 1,830 $ 463 $ 3,212 $ 1,021 1 Negative reclassification amounts indicate decreases to earnings in the statement of income and increases to balance sheet assets. The opposite applies to positive reclassification amounts.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	INCOME TAXES The effective income tax rate of 28.8% for the third quarter of 2015 was lower than the 2014 third quarter rate of 35.6% , primarily due to the recognition of tax credits for certain research and development initiatives and for a project related to alternative energy that was placed in service during the third quarter of 2015. On a year-to-date basis, the 2015 tax rate of 32.0% was lower than the 2014 rate of 36.1% due primarily to the tax credit projects and to an increase in the proportion of nontaxable items relative to pretax income. Net deferred tax assets were approximately $201 million at September 30, 2015 and $224 million at December 31, 2014 . We evaluate deferred tax assets on a regular basis to determine whether an additional valuation allowance is required. Based on this evaluation, and considering the weight of the positive evidence compared to the negative evidence, we have concluded that an additional valuation allowance is not required as of September 30, 2015 .

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value	FAIR VALUE Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. To measure fair value, a hierarchy has been established that requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs. This hierarchy uses three levels of inputs to measure the fair value of assets and liabilities as follows: Level 1 – Quoted prices in active markets for identical assets or liabilities in active markets that the Company has the ability to access; Level 2 – Observable inputs other than Level 1 including quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in less active markets, observable inputs other than quoted prices that are used in the valuation of an asset or liability, and inputs that are derived principally from or corroborated by observable market data by correlation or other means; and Level 3 – Unobservable inputs supported by little or no market activity for financial instruments whose value is determined by pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation. The level in the fair value hierarchy within which the fair value measurement is classified is determined based on the lowest level input that is significant to the fair value measure in its entirety. Market activity is presumed to be orderly in the absence of evidence of forced or disorderly sales, although such sales may still be indicative of fair value. Applicable accounting guidance precludes the use of blockage factors or liquidity adjustments due to the quantity of securities held by an entity. We use fair value to measure certain assets and liabilities on a recurring basis when fair value is the primary measure for accounting. Fair value is used on a nonrecurring basis to measure certain assets when adjusting carrying values, such as the application of lower of cost or fair value accounting, including recognition of impairment on assets. Fair value is also used when providing required disclosures for certain financial instruments. Fair Value Policies and Procedures We have various policies, processes and controls in place to ensure that fair values are reasonably developed, reviewed and approved for use. These include a Securities Valuation Committee (“SVC”) comprised of executive management appointed by the Board of Directors. The SVC reviews and approves on a quarterly basis the key components of fair value estimation, including critical valuation assumptions for Level 3 modeling. A Model Risk Management Group conducts model validations, including internal models, and sets policies and procedures for revalidation, including the timing of revalidation. Third Party Service Providers We use a third party pricing service to provide pricing for approximately 92% of our AFS Level 2 securities. Fair values for other AFS Level 2 and for Level 3 securities generally use certain inputs corroborated by market data and include standard form discounted cash flow modeling. For Level 2 securities, the third party pricing service provides documentation on an ongoing basis that presents market corroborative data, including detail pricing information and market reference data. The documentation includes benchmark yields, reported trades, broker/dealer quotes, issuer spreads, two-sided markets, benchmark securities, bids, offers, and reference data, including information from the vendor trading platform. We review, test and validate this information as appropriate. Absent observable trade data, we do not adjust prices from our third party sources. The following describes the hierarchy designations, valuation methodologies, and key inputs to measure fair value on a recurring basis for designated financial instruments: Available-for-Sale U.S. Treasury, Agencies and Corporations U.S. Treasury securities are measured under Level 1 using quoted market prices when available. U.S. agencies and corporations are measured under Level 2 generally using the previously discussed third party pricing service. Municipal Securities Municipal securities are measured under Level 2 generally using the third party pricing service. Valuation inputs include Baa municipal curves, as well as FHLB and London Interbank Offered Rate (“LIBOR”) swap curves. Money Market Mutual Funds and Other Money market mutual funds and other securities are measured under Level 1 or Level 2. For Level 1, quoted market prices are used which may include net asset values or their equivalents. Level 2 valuations generally use quoted prices for similar securities. Trading Account Securities in the trading account are measured under Level 1 using quoted market prices. If not available, quoted prices under Level 2 for similar securities are used. Bank-Owned Life Insurance Bank-owned life insurance (“BOLI”) is measured under Level 2 according to cash surrender values (“CSVs”) of the insurance policies that are provided by a third party service. Nearly all policies are general account policies with CSVs based on the Company’s claims on the assets of the insurance companies. The insurance companies’ investments include predominantly fixed income securities consisting of investment-grade corporate bonds and various types of mortgage instruments. Management regularly reviews its BOLI investment performance, including concentrations among insurance providers. Private Equity Investments Private equity investments are measured under Level 3. The Equity Investments Committee, consisting of executives familiar with the investments, reviews periodic financial information, including audited financial statements when available. Certain analytics may be employed that include current and projected financial performance, recent financing activities, economic and market conditions, market comparables, market liquidity, sales restrictions, and other factors. The amount of unfunded commitments to invest is disclosed in Note 11. Certain restrictions apply for the redemption of these investments and certain investments are prohibited by the Volcker Rule. See discussions in Notes 5 and 11. Agriculture Loan Servicing This asset results from our servicing of agriculture loans approved and funded by Federal Agricultural Mortgage Corporation (“FAMC”). We provide this servicing under an agreement with FAMC for loans they own. The asset’s fair value represents our projection of the present value of future cash flows measured under Level 3 using discounted cash flow methodologies. Interest-Only Strips Interest-only strips are created as a by-product of the securitization process. When the guaranteed portions of SBA 7(a) loans are pooled, interest-only strips may be created in the pooling process. The asset’s fair value represents our projection of the present value of future cash flows measured under Level 3 using discounted cash flow methodologies. Deferred Compensation Plan Assets and Obligations Invested assets in the deferred compensation plan consist of shares of registered investment companies. These mutual funds are valued under Level 1 at quoted market prices, which represents the NAV of shares held by the plan at the end of the period. Derivatives Derivatives are measured according to their classification as either exchange-traded or over-the-counter (“OTC”). Exchange-traded derivatives consist of foreign currency exchange contracts measured under Level 1 because they are traded in active markets. OTC derivatives, including those for customers, consist of interest rate swaps and options. These derivatives are measured under Level 2 using third party services. Observable market inputs include yield curves (the LIBOR swap curve and relevant overnight index swap curves), foreign exchange rates, commodity prices, option volatilities, counterparty credit risk, and other related data. Credit valuation adjustments are required to reflect nonperformance risk for both the Company and the respective counterparty. These adjustments are determined generally by applying a credit spread to the total expected exposure of the derivative. Securities Sold, Not Yet Purchased Securities sold, not yet purchased, included in “Federal funds and other short-term borrowings” on the balance sheet, are measured under Level 1 using quoted market prices. If not available, quoted prices under Level 2 for similar securities are used. Quantitative Disclosure of Fair Value Measurements Assets and liabilities measured at fair value by class on a recurring basis are summarized as follows: (In thousands) September 30, 2015 Level 1 Level 2 Level 3 Total ASSETS Investment securities: Available-for-sale: U.S. Treasury, agencies and corporations $ — $ 5,741,982 $ — $ 5,741,982 Municipal securities 213,398 213,398 Other debt securities 22,767 22,767 Money market mutual funds and other 18,509 3,355 21,864 18,509 5,981,502 — 6,000,011 Trading account 73,521 73,521 Other noninterest-bearing investments: Bank-owned life insurance 482,199 482,199 Private equity investments 120,195 120,195 Other assets: Agriculture loan servicing and interest-only strips 13,161 13,161 Deferred compensation plan assets 83,703 83,703 Derivatives: Interest rate related and other 18,270 18,270 Interest rate swaps for customers 66,805 66,805 Foreign currency exchange contracts 18,947 18,947 18,947 85,075 — 104,022 $ 121,159 $ 6,622,297 $ 133,356 $ 6,876,812 LIABILITIES Securities sold, not yet purchased $ 29,566 $ — $ — $ 29,566 Other liabilities: Deferred compensation plan obligations 83,703 83,703 Derivatives: Interest rate related and other 245 245 Interest rate swaps for customers 69,991 69,991 Foreign currency exchange contracts 16,372 16,372 16,372 70,236 — 86,608 $ 129,641 $ 70,236 $ — $ 199,877 (In thousands) December 31, 2014 Level 1 Level 2 Level 3 Total ASSETS Investment securities: Available-for-sale: U.S. Treasury, agencies and corporations $ — $ 3,098,208 $ — $ 3,098,208 Municipal securities 185,093 4,164 189,257 Asset-backed securities: Trust preferred – banks and insurance 22,701 393,007 415,708 Auction rate 4,761 4,761 Other 666 25 691 Money market mutual funds and other 105,348 30,275 135,623 105,348 3,336,943 401,957 3,844,248 Trading account 70,601 70,601 Other noninterest-bearing investments: Bank-owned life insurance 476,290 476,290 Private equity investments 99,865 99,865 Other assets: Agriculture loan servicing and interest-only strips 12,227 12,227 Deferred compensation plan assets 88,878 88,878 Derivatives: Interest rate related and other 1,508 1,508 Interest rate swaps for customers 48,287 48,287 Foreign currency exchange contracts 16,625 16,625 16,625 49,795 — 66,420 $ 210,851 $ 3,933,629 $ 514,049 $ 4,658,529 LIABILITIES Securities sold, not yet purchased $ 24,230 $ — $ — $ 24,230 Other liabilities: Deferred compensation plan obligations 88,878 88,878 Derivatives: Interest rate related and other 297 297 Interest rate swaps for customers 50,669 50,669 Foreign currency exchange contracts 15,272 15,272 15,272 50,966 — 66,238 Other 13 13 $ 128,380 $ 50,966 $ 13 $ 179,359 Reconciliation of Level 3 Fair Value Measurements The following reconciles the beginning and ending balances of assets and liabilities that are measured at fair value by class on a recurring basis using Level 3 inputs: Level 3 Instruments Three Months Ended September 30, 2015 (In thousands) Municipal securities Trust preferred – banks and insurance Other Private equity investments Ag loan svcg and int-only strips Derivatives and other liabilities Balance at June 30, 2015 $ — $ — $ — $ 110,115 $ 13,502 $ — Net gains (losses) included in: Statement of income: Dividends and other investment income (loss) (620 ) Equity securities gains, net 3,587 Other noninterest loss, net (375 ) Purchases 8,184 234 Sales (126 ) Redemptions and paydowns (945 ) (200 ) Balance at September 30, 2015 $ — $ — $ — $ 120,195 $ 13,161 $ — Level 3 Instruments Nine Months Ended September 30, 2015 (In thousands) Municipal securities Trust preferred – banks and insurance Other Private equity investments Ag loan svcg and int-only strips Derivatives and other liabilities Balance at December 31, 2014 $ 4,164 $ 393,007 $ 4,761 $ 97,649 $ 12,227 $ (13 ) Net gains (losses) included in: Statement of income: Accretion of purchase discount on securities available-for-sale 3 471 Dividends and other investment loss (1,179 ) Equity securities gains, net 7,554 Fixed income securities losses, net (344 ) (136,691 ) (606 ) Other noninterest income, net 1,112 Other noninterest expense 13 Other comprehensive income (loss) 687 141,547 (74 ) Fair value of HTM securities reclassified as AFS 57,308 Purchases 20,498 615 Sales (2,651 ) (440,055 ) (4,081 ) (2,634 ) Redemptions and paydowns (1,859 ) (15,587 ) (1,693 ) (793 ) Balance at September 30, 2015 $ — $ — $ — $ 120,195 $ 13,161 $ — Level 3 Instruments Three Months Ended September 30, 2014 (In thousands) Municipal securities Trust preferred – banks and insurance Trust preferred – REIT 1 Auction rate Other asset-backed Private equity investments Ag loan svcg and int-only strips Derivatives and other liabilities Balance at June 30, 2014 $ 10,038 $ 685,805 $ — $ 6,578 $ 28 $ 82,256 $ 11,461 $ (132 ) Net gains (losses) included in: Statement of income: Accretion of purchase discount on securities available-for-sale 9 480 1 Dividends and other investment income 1,451 Equity securities losses, net (3,684 ) Fixed income securities gains (losses), net 2 (13,956 ) 37 Other noninterest income 139 Other noninterest expense 65 Other comprehensive income 4 45,521 48 Purchases 4,438 531 Sales (155,869 ) (950 ) (1 ) (476 ) Redemptions and paydowns (125 ) (36,511 ) (100 ) (213 ) Balance at September 30, 2014 $ 9,928 $ 525,470 $ — $ 5,714 $ 27 $ 83,885 $ 11,918 $ (67 ) Level 3 Instruments Nine Months Ended September 30, 2014 (In thousands) Municipal securities Trust preferred – banks and insurance Trust preferred – REIT 1 Auction rate Other asset-backed Private equity investments Ag loan svcg and int-only strips Derivatives and other liabilities Balance at December 31, 2013 $ 10,662 $ 1,238,820 $ 22,996 $ 6,599 $ 25,800 $ 82,410 $ 8,852 $ (4,303 ) Net gains (losses) included in: Statement of income: Accretion of purchase discount on securities available-for-sale 27 1,833 3 Dividends and other investment income (loss) (1,296 ) Fair value and nonhedge derivative loss (7,894 ) Equity securities gains, net (3,100 ) Fixed income securities gains, net 18 9,009 1,399 37 10,917 Other noninterest income 665 Other noninterest expense 174 Other comprehensive income (loss) (178 ) 146,861 25 (15 ) Purchases 12,898 2,987 Sales (702,257 ) (24,395 ) (950 ) (36,670 ) (1,315 ) Redemptions and paydowns (601 ) (99,603 ) (5 ) (5,712 ) (586 ) 11,956 Transfers to Level 2 (69,193 ) Balance at September 30, 2014 $ 9,928 $ 525,470 $ — $ 5,714 $ 27 $ 83,885 $ 11,918 $ (67 ) 1 Real Estate Investment Trust Except for the transfers included in the previous schedule, no transfers of assets or liabilities occurred among Levels 1, 2 or 3 for the three and nine months ended September 30, 2015 and 2014 . Transfers are considered to have occurred as of the end of the reporting period. The preceding reconciling amounts using Level 3 inputs include the following realized amounts in the statement of income: (In thousands) Three Months Ended Nine Months Ended 2015 2014 2015 2014 Dividends and other investment income $ (6 ) $ — $ (2 ) $ 34 Fixed income securities gains (losses), net — (13,917 ) (137,641 ) 21,380 Equity securities losses, net (10,637 ) — (11,311 ) — Nonrecurring Fair Value Measurements Included in the balance sheet amounts are the following amounts of assets that had fair value changes during the year-to-date period measured on a nonrecurring basis. (In thousands) Fair value at September 30, 2015 Fair value at December 31, 2014 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total ASSETS Private equity investments, carried at cost $ — $ — $ 2,974 $ 2,974 $ — $ — $ 23,454 $ 23,454 Impaired loans — 14,419 — 14,419 — 16,574 — 16,574 Other real estate owned — 2,221 — 2,221 — 8,034 — 8,034 $ — $ 16,640 $ 2,974 $ 19,614 $ — $ 24,608 $ 23,454 $ 48,062 The previous fair values may not be current as of the dates indicated, but rather as of the date the fair value change occurred, such as a charge for impairment. Accordingly, carrying values may not equal current fair value. Gains (losses) from fair value changes (In thousands) Three Months Ended Nine Months Ended 2015 2014 2015 2014 ASSETS HTM securities adjusted for OTTI $ — $ — $ — $ (27 ) Private equity investments, carried at cost (625 ) (339 ) (2,903 ) (471 ) Impaired loans (7,666 ) (807 ) (12,682 ) (12,126 ) Other real estate owned (565 ) (3,088 ) (1,883 ) (6,259 ) $ (8,856 ) $ (4,234 ) $ (17,468 ) $ (18,883 ) During the three and nine months ended September 30, we recognized net gains of $0.8 million and $2.7 million in 2015 and $1.9 million and $4.4 million in 2014 from the sale of other real estate owned (“OREO”) properties that had a carrying value at the time of sale of approximately $13.1 million and $30.7 million during the nine months ended September 30, 2015 and 2014 , respectively. Previous to their sale in these periods, we recognized impairment on these properties that was not significant for the three months ended September 30, 2015 and 2014, and was $0.4 million and $0.5 million for the nine months ended September 30, 2015 and 2014 , respectively. Private equity investments carried at cost were measured at fair value for impairment purposes according to the methodology previously discussed for these investments. Amounts of private equity investments carried at cost were $28.7 million at September 30, 2015 and $39.1 million at December 31, 2014 . Amounts of other noninterest-bearing investments carried at cost were $220.2 million at September 30, 2015 and $250.7 million at December 31, 2014 , which were comprised of Federal Reserve, Federal Home Loan Bank, and Farmer Mac stock. Impaired (or nonperforming) loans that are collateral-dependent were measured at fair value based on the fair value of the collateral. OREO was measured initially at fair value based on property appraisals at the time of transfer and subsequently at the lower of cost or fair value. Measurement of fair value for collateral-dependent loans and OREO was based on third party appraisals that utilize one or more valuation techniques (income, market and/or cost approaches). Any adjustments to calculated fair value were made based on recently completed and validated third party appraisals, third party appraisal services, automated valuation services, or our informed judgment. Evaluations were made to determine that the appraisal process met the relevant concepts and requirements of applicable accounting guidance. Automated valuation services may be used primarily for residential properties when values from any of the previous methods were not available within 90 days of the balance sheet date. These services use models based on market, economic, and demographic values. The use of these models has only occurred in a very few instances and the related property valuations have not been significant to consider disclosure under Level 3 rather than Level 2. Impaired loans not collateral-dependent were measured at fair valued based on the present value of future cash flows discounted at the expected coupon rates over the lives of the loans. Because the loans were not discounted at market interest rates, the valuations do not represent fair value and have been excluded from the nonrecurring fair value balance in the preceding schedules. Fair Value of Certain Financial Instruments Following is a summary of the carrying values and estimated fair values of certain financial instruments: September 30, 2015 December 31, 2014 (In thousands) Carrying value Estimated fair value Level Carrying value Estimated fair value Level Financial assets: HTM investment securities $ 544,168 $ 553,088 3 $ 647,252 $ 677,196 3 Loans and leases (including loans held for sale), net of allowance 39,655,805 39,414,672 3 39,591,499 39,426,498 3 Financial liabilities: Time deposits 2,216,206 2,223,094 2 2,406,924 2,408,550 2 Foreign deposits 441,560 441,548 2 328,391 328,447 2 Long-term debt (less fair value hedges) 944,613 975,642 2 1,090,778 1,159,287 2 This summary excludes financial assets and liabilities for which carrying value approximates fair value. For financial assets, these include cash and due from banks and money market investments. For financial liabilities, these include demand, savings and money market deposits, and federal funds purchased and security repurchase agreements. The estimated fair value of demand, savings and money market deposits is the amount payable on demand at the reporting date. Carrying value is used because the accounts have no stated maturity and the customer has the ability to withdraw funds immediately. Also excluded from the summary are financial instruments recorded at fair value on a recurring basis, as previously described. HTM investment securities primarily consist of municipal securities. They were measured at fair value according to the methodologies previously discussed for these investment types. Loans are measured at fair value according to their status as nonimpaired or impaired. For nonimpaired loans, fair value is estimated by discounting future cash flows using the LIBOR yield curve adjusted by a factor which reflects the credit and interest rate risk inherent in the loan. These future cash flows are then reduced by the estimated “life of the loan” aggregate credit losses in the loan portfolio. These adjustments for lifetime future credit losses are derived from the methods used to estimate the ALLL for our loan portfolio and are adjusted quarterly as necessary to reflect the most recent loss experience. Impaired loans are already considered to be held at fair value, except those whose fair value is determined by discounting cash flows, as discussed previously. See Impaired Loans in Note 6 for details on the impairment measurement method for impaired loans. Loans, other than those held for sale, are not normally purchased and sold by the Company, and there are no active trading markets for most of this portfolio. Time and foreign deposits, and any other short-term borrowings, are measured at fair value by discounting future cash flows using the LIBOR yield curve to the given maturity dates. Long-term debt is measured at fair value based on actual market trades (i.e., an asset value) when available, or discounting cash flows to maturity using the LIBOR yield curve adjusted for credit spreads. These fair value disclosures represent our best estimates based on relevant market information and information about the financial instruments. Fair value estimates are based on judgments regarding current economic conditions, future expected loss experience, risk characteristics of the various instruments, and other factors. These estimates are subjective in nature, involve uncertainties and matters of significant judgment, and cannot be determined with precision. Changes in these methodologies and assumptions could significantly affect the estimates.

Commitments, Guarantees, And Co

Commitments, Guarantees, And Contingent Liabilities	9 Months Ended
	Sep. 30, 2015
Guarantees, Commitments And Contingencies [Abstract]
Guarantees, Commitments And Contingencies	COMMITMENTS, GUARANTEES AND CONTINGENT LIABILITIES Commitments and Guarantees Contractual amounts of off-balance sheet financial instruments used to meet the financing needs of our customers are as follows: (In thousands) September 30, December 31, Net unfunded commitments to extend credit 1 $ 16,969,127 $ 16,658,757 Standby letters of credit: Financial 701,945 745,895 Performance 204,949 183,482 Commercial letters of credit 77,874 32,144 Total unfunded lending commitments $ 17,953,895 $ 17,620,278 1 Net of participations The Company’s 2014 Annual Report on Form 10-K contains further information about these commitments and guarantees including their terms and collateral requirements. At September 30, 2015 , the Company had recorded approximately $15.2 million as a liability for the guarantees associated with the standby letters of credit, which consisted of $12.0 million attributable to the RULC and $3.2 million of deferred commitment fees. At September 30, 2015 , the Parent has guaranteed $15 million of debt of affiliated trusts issuing trust preferred securities. At September 30, 2015 , we had unfunded commitments for private equity investments of approximately $48 million . These obligations have no stated maturity. Certain PEIs related to these commitments are prohibited by the Volcker Rule. See related discussions about these investments in Notes 5 and 10. Legal Matters We are subject to litigation in court and arbitral proceedings, as well as proceedings, investigations, examinations and other actions brought or considered by governmental and self-regulatory agencies. Litigation may relate to lending, deposit and other customer relationships, vendor and contractual issues, employee matters, intellectual property matters, personal injuries and torts, regulatory and legal compliance, and other matters. While most matters relate to individual claims, we are also subject to putative class action claims and similar broader claims. Proceedings, investigations, examinations and other actions brought or considered by governmental and self-regulatory agencies may relate to our banking, investment advisory, trust, securities, and other products and services; our customers’ involvement in money laundering, fraud, securities violations and other illicit activities or our policies and practices relating to such customer activities; and our compliance with the broad range of banking, securities and other laws and regulations applicable to us. At any given time, we may be in the process of responding to subpoenas, requests for documents, data and testimony relating to such matters and engaging in discussions to resolve the matters. As of September 30, 2015 , we were subject to the following material litigation and governmental inquiries: • a class action case, Reyes v. Zions First National Bank, et. al., which was brought in the United States District Court for the Eastern District of Pennsylvania in early 2010. This case relates to our banking relationships with customers that allegedly engaged in wrongful telemarketing practices. The plaintiff is seeking a trebled monetary award under the federal RICO Act. In the third quarter of 2013, the District Court denied the plaintiff’s motion for class certification in the Reyes case. The plaintiff appealed the District Court decision to the Third Circuit Court of Appeals. In the third quarter of 2015, the Third Circuit vacated the District Court’s decision denying class certification and remanded the matter to the District Court with instructions to reconsider the class certification determination in light of particular standards articulated by the Third Circuit in its opinion. The District Court judge has directed the parties to participate in a settlement conference with a federal magistrate judge in the fourth quarter of 2015. • a governmental inquiry into possible money laundering activities of a customer of one of our subsidiary banks and the anti-money laundering practices of that bank (conducted by the United States Attorney’s Office for the Southern District of New York). Our first contact with the United States Attorney’s Office relating to this matter occurred in early 2012. We are unclear about the status of this inquiry. • a governmental inquiry into the practices of our subsidiary, Zions Bank; our former subsidiary, NetDeposit, LLC; and possibly other of our affiliates relating primarily to payment processing for allegedly fraudulent telemarketers and other customer types (conducted by the Department of Justice). This inquiry has been directed towards the banking industry generally, including numerous banks unrelated to us, and has led to a number of enforcement actions. Our first contact with the Department of Justice relating to this matter occurred in early 2013. We are unclear about the status of the inquiry as it relates to us. At least quarterly, we review outstanding and new legal matters, utilizing then available information. In accordance with applicable accounting guidance, if we determine that a loss from a matter is probable and the amount of the loss can be reasonably estimated, we establish an accrual for the loss. In the absence of such a determination, no accrual is made. Once established, accruals are adjusted to reflect developments relating to the matters. In our review, we also assess whether we can determine the range of reasonably possible losses for significant matters in which we are unable to determine that the likelihood of a loss is remote. Because of the difficulty of predicting the outcome of legal matters, discussed subsequently, we are able to meaningfully estimate such a range only for a limited number of matters. Based on information available as of September 30, 2015 , we estimated the aggregate range of reasonably possible losses for those matters to be from $0 million to roughly $50 million in excess of amounts accrued. The matters underlying the estimated range will change from time to time, and actual results may vary significantly from this estimate. Those matters for which an estimate is not possible are not included within this estimated range and, therefore, this estimated range does not represent our maximum loss exposure. Based on our current knowledge, we believe that our current estimated liability for litigation and other legal actions and claims, reflected in our accruals and determined in accordance with applicable accounting guidance, is adequate and that liabilities in excess of the amounts currently accrued, if any, arising from litigation and other legal actions and claims for which an estimate as previously described is possible, will not have a material impact on our financial condition, results of operations, or cash flows. However, in light of the significant uncertainties involved in these matters, and the very large or indeterminate damages sought in some of these matters, an adverse outcome in one or more of these matters could be material to our financial condition, results of operations, or cash flows for any given reporting period. Any estimate or determination relating to the future resolution of litigation, arbitration, governmental or self-regulatory examinations, investigations or actions or similar matters is inherently uncertain and involves significant judgment. This is particularly true in the early stages of a legal matter, when legal issues and facts have not been well articulated, reviewed, analyzed, and vetted through discovery, preparation for trial or hearings, substantive and productive mediation or settlement discussions, or other actions. It is also particularly true with respect to class action and similar claims involving multiple defendants, matters with complex procedural requirements or substantive issues or novel legal theories, and examinations, investigations and other actions conducted or brought by governmental and self-regulatory agencies, in which the normal adjudicative process is not applicable. Accordingly, we usually are unable to determine whether a favorable or unfavorable outcome is remote, reasonably likely, or probable, or to estimate the amount or range of a probable or reasonably likely loss, until relatively late in the course of a legal matter, sometimes not until a number of years have elapsed. Accordingly, our judgments and estimates relating to claims will change from time to time in light of developments and actual outcomes will differ from our estimates. These differences may be material.

Retirement Plans

Retirement Plans	9 Months Ended
	Sep. 30, 2015
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Retirement Plans	RETIREMENT PLANS The following discloses the net periodic benefit cost (credit) and its components for the Company’s pension and postretirement plans: Pension benefits Supplemental retirement benefits Postretirement benefits Pension benefits Supplemental retirement benefits Postretirement benefits (In thousands) Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 2015 2014 2015 2014 2015 2014 2015 2014 Service cost $ — $ — $ — $ — $ 8 $ 8 $ — $ — $ — $ — $ 25 $ 23 Interest cost 1,755 1,869 101 113 10 12 5,320 5,608 302 340 30 35 Expected return on plan assets (3,090 ) (3,326 ) (9,270 ) (9,979 ) Amortization of prior service cost — 13 — — — 38 — — Amortization of net actuarial (gain) loss 1,297 735 31 5 (13 ) (18 ) 4,445 2,206 92 14 (40 ) (53 ) Net periodic benefit cost (credit) $ (38 ) $ (722 ) $ 132 $ 131 $ 5 $ 2 $ 495 $ (2,165 ) $ 394 $ 392 $ 15 $ 5 As disclosed in the Company’s 2014 Annual Report on Form 10-K, the Company has frozen its participation and benefit accruals for the pension plan and its contributions for individual benefit payments in the postretirement benefit plan.

Operating Segment Information

Operating Segment Information	9 Months Ended
	Sep. 30, 2015
Operating Segment Information [Abstract]
Operating Segment Information	. OPERATING SEGMENT INFORMATION We manage our operations and prepare management reports and other information with a primary focus on geographical area. As of September 30, 2015 , we operate seven community/regional banks in distinct geographical areas. Performance assessment and resource allocation are based upon this geographical structure. Zions Bank operates 99 branches in Utah, 24 branches in Idaho, and one branch in Wyoming. Amegy operates 77 branches in Texas. CB&T operates 94 branches in California. NBAZ operates 66 branches in Arizona. NSB operates 49 branches in Nevada. Vectra operates 36 branches in Colorado and one branch in New Mexico. TCBW operates one branch in Washington and one branch in Oregon. Effective April 1, 2015, TCBO was merged into TCBW. Note 1 discusses the approval to merge the Company’s seven subsidiary banks into Zions Bank following the close of business on December 31, 2015. This consolidation will affect the presentation of segment reporting, although certain geographical information will continue. The operating segment identified as “Other” includes the Parent, Zions Management Services Company (“ZMSC”), certain nonbank financial service subsidiaries, and eliminations of transactions between segments. The Parent’s operations are significant to the Other segment. Net interest income is substantially affected by the Parent’s interest on long-term debt. ZMSC provides internal technology and operational services to affiliated operating businesses of the Company. ZMSC charges most of its costs to the affiliates on an approximate break-even basis. The accounting policies of the individual operating segments are the same as those of the Company. Transactions between operating segments are primarily conducted at fair value, resulting in profits that are eliminated for reporting consolidated results of operations. Operating segments pay for centrally provided services based upon estimated or actual usage of those services. The following schedule presents selected operating segment information for the three months ended September 30, 2015 and 2014 : (In millions) Zions Bank Amegy CB&T NBAZ NSB 2015 2014 2015 2014 2015 2014 2015 2014 2015 2014 CONDENSED INCOME STATEMENT Net interest income $ 145.9 $ 146.7 $ 99.9 $ 95.8 $ 95.0 $ 98.9 $ 40.4 $ 40.3 $ 27.6 $ 28.4 Provision for loan losses (5.7 ) (27.7 ) 31.8 (3.5 ) 1.1 (10.1 ) (2.4 ) (4.5 ) (3.7 ) (4.9 ) Net interest income after provision for loan losses 151.6 174.4 68.1 99.3 93.9 109.0 42.8 44.8 31.3 33.3 Noninterest income 50.4 44.8 33.4 39.4 18.6 17.5 9.9 9.6 9.4 9.6 Noninterest expense 128.8 123.4 90.2 79.1 70.6 77.1 35.8 33.2 32.3 31.8 Income before income taxes 73.2 95.8 11.3 59.6 41.9 49.4 16.9 21.2 8.4 11.1 Income taxes (benefit) 26.4 35.4 3.5 20.4 16.4 19.1 2.6 7.9 2.8 3.7 Net income (loss) 46.8 60.4 7.8 39.2 25.5 30.3 14.3 13.3 5.6 7.4 Net income (loss) applicable to noncontrolling interests 0.6 — — — — — — — — — Net income (loss) applicable to controlling interest $ 46.2 $ 60.4 $ 7.8 $ 39.2 $ 25.5 $ 30.3 $ 14.3 $ 13.3 $ 5.6 $ 7.4 AVERAGE BALANCE SHEET DATA Total assets $ 18,437 $ 18,083 $ 13,901 $ 13,861 $ 11,846 $ 11,252 $ 5,018 $ 4,710 $ 4,354 $ 4,074 Cash and due from banks 241 322 101 172 88 134 43 70 70 94 Money market investments 2,064 3,083 2,230 2,555 1,944 1,577 441 401 961 741 Total securities 3,211 1,814 319 266 538 258 535 380 864 799 Total loans 12,200 12,312 10,078 9,721 8,532 8,520 3,799 3,660 2,321 2,318 Total deposits 15,944 15,827 11,411 11,382 10,181 9,592 4,360 4,081 3,951 3,670 Shareholder’s equity: Preferred equity 280 280 226 226 162 162 85 85 50 50 Common equity 1,689 1,578 1,967 1,903 1,415 1,386 500 465 326 330 Noncontrolling interests 17 — — — — — — — — — Total shareholder’s equity 1,986 1,858 2,193 2,129 1,577 1,548 585 550 376 380 Vectra TCBW Other Consolidated Company 2015 2014 2015 2014 2015 2014 2015 2014 CONDENSED INCOME STATEMENT Net interest income $ 25.5 $ 25.4 $ 7.5 $ 8.3 $ (16.4 ) $ (27.1 ) $ 425.4 $ 416.7 Provision for loan losses (1.6 ) (3.2 ) (1.2 ) (0.7 ) — (0.1 ) 18.3 (54.7 ) Net interest income after provision for loan losses 27.1 28.6 8.7 9.0 (16.4 ) (27.0 ) 407.1 471.4 Noninterest income 5.8 6.0 1.1 1.1 2.2 (12.0 ) 130.8 116.0 Noninterest expense 24.7 24.2 5.3 5.7 8.4 64.0 396.1 438.5 Income (loss) before income taxes 8.2 10.4 4.5 4.4 (22.6 ) (103.0 ) 141.8 148.9 Income taxes (benefit) 2.7 3.6 1.5 1.5 (15.1 ) (38.5 ) 40.8 53.1 Net income (loss) 5.5 6.8 3.0 2.9 (7.5 ) (64.5 ) 101.0 95.8 Net income (loss) applicable to noncontrolling interests — — — — (0.6 ) — — — Net income (loss) applicable to controlling interest $ 5.5 $ 6.8 $ 3.0 $ 2.9 $ (6.9 ) $ (64.5 ) $ 101.0 $ 95.8 AVERAGE BALANCE SHEET DATA Total assets $ 3,246 $ 2,751 $ 1,058 $ 977 $ 546 $ 420 $ 58,406 $ 56,128 Cash and due from banks 26 41 29 34 (14 ) (9 ) 584 858 Money market investments 514 174 227 140 395 (178 ) 8,776 8,493 Total securities 247 152 86 78 56 300 5,856 4,047 Total loans 2,397 2,319 702 712 (4 ) 5 40,025 39,567 Total deposits 2,834 2,339 906 827 (668 ) (1,427 ) 48,919 46,291 Shareholder’s equity: Preferred equity 25 26 3 3 173 172 1,004 1,004 Common equity 324 307 111 107 324 145 6,656 6,221 Noncontrolling interests — — — — (17 ) — — — Total shareholder’s equity 349 333 114 110 480 317 7,660 7,225 The following schedule presents selected operating segment information for the nine months ended September 30, 2015 and 2014 : (In millions) Zions Bank Amegy CB&T NBAZ NSB 2015 2014 2015 2014 2015 2014 2015 2014 2015 2014 CONDENSED INCOME STATEMENT Net interest income $ 431.2 $ 434.8 $ 291.6 $ 285.9 $ 289.4 $ 311.8 $ 119.7 $ 120.9 $ 83.9 $ 84.6 Provision for loan losses (18.7 ) (51.8 ) 56.9 5.9 (6.5 ) (25.1 ) 1.0 (15.5 ) (15.4 ) (13.2 ) Net interest income after provision for loan losses 449.9 486.6 234.7 280.0 295.9 336.9 118.7 136.4 99.3 97.8 Noninterest income 1 90.6 139.0 101.2 107.7 56.5 37.1 29.2 26.2 26.8 23.4 Noninterest expense 385.5 366.0 280.9 258.6 224.4 244.8 109.5 109.4 98.0 97.9 Income before income taxes 155.0 259.6 55.0 129.1 128.0 129.2 38.4 53.2 28.1 23.3 Income taxes (benefit) 54.4 95.4 17.2 43.6 50.0 50.2 10.0 19.7 9.4 7.7 Net income (loss) 100.6 164.2 37.8 85.5 78.0 79.0 28.4 33.5 18.7 15.6 Net income (loss) applicable to noncontrolling interests 2.0 — — — — — — — — — Net income (loss) applicable to controlling interest $ 98.6 $ 164.2 $ 37.8 $ 85.5 $ 78.0 $ 79.0 $ 28.4 $ 33.5 $ 18.7 $ 15.6 AVERAGE BALANCE SHEET DATA Total assets $ 18,628 $ 17,983 $ 13,846 $ 13,650 $ 11,578 $ 11,063 $ 4,929 $ 4,673 $ 4,277 $ 4,046 Cash and due from banks 263 332 127 235 88 152 45 72 72 88 Money market investments 2,664 3,101 2,086 2,498 1,794 1,321 413 368 861 735 Total securities 2,827 1,720 295 256 434 274 466 372 854 789 Total loans 12,184 12,292 10,170 9,550 8,502 8,571 3,803 3,668 2,354 2,314 Total deposits 16,186 15,709 11,362 11,217 9,917 9,421 4,277 4,016 3,870 3,648 Shareholder’s equity: Preferred equity 280 280 226 202 162 162 85 101 50 50 Common equity 1,654 1,556 1,953 1,875 1,405 1,368 492 447 330 324 Noncontrolling interests 13 — — — — — — — — — Total shareholder’s equity 1,947 1,836 2,179 2,077 1,567 1,530 577 548 380 374 Vectra TCBW Other Consolidated 2015 2014 2015 2014 2015 2014 2015 2014 CONDENSED INCOME STATEMENT Net interest income $ 77.6 $ 76.1 $ 22.6 $ 24.0 $ (49.6 ) $ (88.6 ) $ 1,266.4 $ 1,249.5 Provision for loan losses 1.9 (9.5 ) (1.8 ) (0.4 ) (0.1 ) (0.1 ) 17.3 (109.7 ) Net interest income after provision for loan losses 75.7 85.6 24.4 24.4 (49.5 ) (88.5 ) 1,249.1 1,359.2 Noninterest income 1 15.6 15.7 3.3 1.4 (70.1 ) 28.7 253.1 379.2 Noninterest expense 73.0 73.2 11.6 17.1 14.8 75.6 1,197.7 1,242.6 Income (loss) before income taxes 18.3 28.1 16.1 8.7 (134.4 ) (135.4 ) 304.5 495.8 Income taxes (benefit) 5.8 9.7 5.5 3.0 (54.8 ) (50.1 ) 97.5 179.2 Net income (loss) 12.5 18.4 10.6 5.7 (79.6 ) (85.3 ) 207.0 316.6 Net income (loss) applicable to noncontrolling interests — — — — (2.0 ) — — — Net income (loss) applicable to controlling interest $ 12.5 $ 18.4 $ 10.6 $ 5.7 $ (77.6 ) $ (85.3 ) $ 207.0 $ 316.6 AVERAGE BALANCE SHEET DATA Total assets $ 3,154 $ 2,639 $ 1,007 $ 957 $ 154 $ 524 $ 57,573 $ 55,535 Cash and due from banks 28 45 33 28 (17 ) (14 ) 639 938 Money market investments 459 70 166 122 (39 ) (168 ) 8,404 8,047 Total securities 221 158 82 84 120 409 5,299 4,062 Total loans 2,385 2,305 712 710 1 4 40,111 39,414 Total deposits 2,745 2,231 863 809 (1,039 ) (1,205 ) 48,181 45,846 Shareholder’s equity: Preferred equity 25 46 3 3 173 160 1,004 1,004 Common equity 320 279 107 105 258 (98 ) 6,519 5,856 Noncontrolling interests — — — — (13 ) — — — Total shareholder’s equity 345 325 110 108 418 62 7,523 6,860 1 Includes loss on sale of CDOs in the second quarter of 2015 of (in millions) $62.5 (Zions Bank), $0.6 (NSB), $0.6 (Vectra) and $73.1 (Other).

Basis of Presentaion Organizati

Basis of Presentaion Organization and Presentation (Policies)	9 Months Ended
	Sep. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]	BASIS OF PRESENTATION The accompanying unaudited consolidated financial statements of Zions Bancorporation (“the Parent”) and its majority-owned subsidiaries (collectively “the Company,” “Zions,” “we,” “our,” “us”) have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. References to GAAP, including standards promulgated by the Financial Accounting Standards Board (“FASB”), are made according to sections of the Accounting Standards Codification (“ASC”) and to Accounting Standards Updates (“ASU”), which include consensus issues of the Emerging Issues Task Force (“EITF”). In certain cases, ASUs are issued jointly with International Financial Reporting Standards (“IFRS”). Certain prior period amounts have been reclassified to conform with the current period presentation. These reclassifications did not affect net income. Operating results for the three and nine months ended September 30, 2015 and 2014 are not necessarily indicative of the results that may be expected in future periods. The consolidated balance sheet at December 31, 2014 is from the audited financial statements at that date, but does not include all of the information and footnotes required by GAAP for complete financial statements. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company’s 2014 Annual Report on Form 10-K. The Company provides a full range of banking and related services through subsidiary banks in 11 Western and Southwestern states as follows: Zions First National Bank (“Zions Bank”), in Utah, Idaho and Wyoming; Amegy Corporation (“Amegy”) and its subsidiary, Amegy Bank, in Texas; California Bank & Trust (“CB&T”); National Bank of Arizona (“NBAZ”); Nevada State Bank (“NSB”); Vectra Bank Colorado (“Vectra”), in Colorado and New Mexico; and The Commerce Bank of Washington (“TCBW”), in Washington and Oregon. Effective April 1, 2015, The Commerce Bank of Oregon (“TCBO”) was merged into TCBW. The Parent and its subsidiary banks also own and operate certain nonbank subsidiaries that engage in financial services. On June 1, 2015, the Company announced certain efficiency and restructuring initiatives that included, among other things, the mergers of its seven subsidiary banks into Zions Bank, whose name will be changed to ZB, N.A. Regional brand names according to geographic location will continue to be used. The Company has received approvals from the Office of the Comptroller of the Currency and the Federal Deposit Insurance Corporation and expects to complete the mergers following the close of business on December 31, 2015.

Supplemental Cash Flow Inform23

Supplemental Cash Flow Information (Tables)	9 Months Ended
	Sep. 30, 2015
Supplemental Cash Flow Information [Abstract]
Schedule of Other Significant Noncash Transactions [Table Text Block]	(In thousands) Three Months Ended Nine Months Ended 2015 2014 2015 2014 Loans and leases transferred to other real estate owned $ 3,446 $ 8,954 $ 10,098 $ 20,197 Loans held for sale reclassified as loans and leases 22,299 9,658 33,042 14,739 Amortized cost of HTM securities reclassified as AFS securities — — 79,276 —

Offsetting Assets and Liabili24

Offsetting Assets and Liabilities (Tables)	9 Months Ended
	Sep. 30, 2015
Offsetting Assets and Liabilities [Abstract]
Fair Value, by Balance Sheet Grouping [Table Text Block]	September 30, 2015 (In thousands) Gross amounts not offset in the balance sheet Description Gross amounts recognized Gross amounts offset in the balance sheet Net amounts presented in the balance sheet Financial instruments Cash collateral received/pledged Net amount Assets: Federal funds sold and security resell agreements $ 1,325,501 $ — $ 1,325,501 $ — $ — $ 1,325,501 Derivatives (included in other assets) 103,119 — 103,119 (17,207 ) — 85,912 $ 1,428,620 $ — $ 1,428,620 $ (17,207 ) $ — $ 1,411,413 Liabilities: Federal funds and other short-term borrowings $ 272,391 $ — $ 272,391 $ — $ — $ 272,391 Derivatives (included in other liabilities) 86,363 — 86,363 (17,207 ) (37,109 ) 32,047 $ 358,754 $ — $ 358,754 $ (17,207 ) $ (37,109 ) $ 304,438 December 31, 2014 (In thousands) Gross amounts not offset in the balance sheet Description Gross amounts recognized Gross amounts offset in the balance sheet Net amounts presented in the balance sheet Financial instruments Cash collateral received/pledged Net amount Assets: Federal funds sold and security resell agreements $ 1,386,291 $ — $ 1,386,291 $ — $ — $ 1,386,291 Derivatives (included in other assets) 66,420 — 66,420 (3,755 ) 62,665 $ 1,452,711 $ — $ 1,452,711 $ (3,755 ) $ — $ 1,448,956 Liabilities: Federal funds and other short-term borrowings $ 244,223 $ — $ 244,223 $ — $ — $ 244,223 Derivatives (included in other liabilities) 66,064 — 66,064 (3,755 ) (31,968 ) 30,341 $ 310,287 $ — $ 310,287 $ (3,755 ) $ (31,968 ) $ 274,564 September 30, 2015 December 31, 2014 (In thousands) Carrying value Estimated fair value Level Carrying value Estimated fair value Level Financial assets: HTM investment securities $ 544,168 $ 553,088 3 $ 647,252 $ 677,196 3 Loans and leases (including loans held for sale), net of allowance 39,655,805 39,414,672 3 39,591,499 39,426,498 3 Financial liabilities: Time deposits 2,216,206 2,223,094 2 2,406,924 2,408,550 2 Foreign deposits 441,560 441,548 2 328,391 328,447 2 Long-term debt (less fair value hedges) 944,613 975,642 2 1,090,778 1,159,287 2

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Summary Of Investment Securities	September 30, 2015 (In thousands) Amortized cost Gross unrealized gains Gross unrealized losses Estimated fair value Held-to-maturity Municipal securities $ 544,168 $ 9,976 $ 1,056 $ 553,088 Available-for-sale U.S. Government agencies and corporations: Agency securities 1,102,978 7,147 578 1,109,547 Agency guaranteed mortgage-backed securities 2,805,901 12,989 5,619 2,813,271 Small Business Administration loan-backed securities 1,815,766 14,177 10,779 1,819,164 Municipal securities 212,698 1,059 359 213,398 Other debt securities 25,485 187 2,905 22,767 5,962,828 35,559 20,240 5,978,147 Money market mutual funds and other 21,773 91 — 21,864 5,984,601 35,650 20,240 6,000,011 Total $ 6,528,769 $ 45,626 $ 21,296 $ 6,553,099 December 31, 2014 Recognized in OCI 1 Not recognized in OCI (In thousands) Amortized cost Gross unrealized gains Gross unrealized losses Carrying value Gross unrealized gains Gross unrealized losses Estimated fair value Held-to-maturity Municipal securities $ 607,675 $ — $ — $ 607,675 $ 13,018 $ 804 $ 619,889 Asset-backed securities: Trust preferred securities – banks and insurance 79,276 — 39,699 39,577 18,393 663 57,307 686,951 — 39,699 647,252 $ 31,411 $ 1,467 677,196 Available-for-sale U.S. Government agencies and corporations: Agency securities 607,523 1,572 8,343 600,752 600,752 Agency guaranteed mortgage-backed securities 935,164 12,132 2,105 945,191 945,191 Small Business Administration loan-backed securities 1,544,710 16,446 8,891 1,552,265 1,552,265 Municipal securities 189,059 1,143 945 189,257 189,257 Asset-backed securities: Trust preferred securities – banks and insurance 537,589 103 121,984 415,708 415,708 Other 5,252 207 7 5,452 5,452 3,819,297 31,603 142,275 3,708,625 3,708,625 Money market mutual funds and other 136,591 76 1,044 135,623 135,623 3,955,888 31,679 143,319 3,844,248 3,844,248 Total $ 4,642,839 $ 31,679 $ 183,018 $ 4,491,500 $ 4,521,444 1 Other comprehensive income
Contractual Maturities Debt Securities	Held-to-maturity Available-for-sale (In thousands) Amortized cost Estimated fair value Amortized cost Estimated fair value Principal return in one year or less $ 88,169 $ 88,714 $ 822,647 $ 824,744 Principal return after one year through five years 168,734 171,164 2,314,091 2,319,836 Principal return after five years through ten years 152,942 158,331 1,857,898 1,862,624 Principal return after ten years 134,323 134,879 968,192 970,943 $ 544,168 $ 553,088 $ 5,962,828 $ 5,978,147
Summary Of Amount Of Gross Unrealized Losses For Debt Securities And Estimated Fair Value	The following is a summary of the amount of gross unrealized losses for investment securities and the estimated fair value by length of time the securities have been in an unrealized loss position: September 30, 2015 Less than 12 months 12 months or more Total (In thousands) Gross unrealized losses Estimated fair value Gross unrealized losses Estimated fair value Gross unrealized losses Estimated fair value Held-to-maturity Municipal securities $ 901 $ 55,763 $ 155 $ 11,681 $ 1,056 $ 67,444 Available-for-sale U.S. Government agencies and corporations: Agency securities 65 34,737 513 137,964 578 172,701 Agency guaranteed mortgage-backed securities 5,361 1,330,271 258 15,351 5,619 1,345,622 Small Business Administration loan-backed securities 4,550 453,651 6,229 452,275 10,779 905,926 Municipal securities 305 34,703 54 4,125 359 38,828 Other debt securities — — 2,905 12,097 2,905 12,097 10,281 1,853,362 9,959 621,812 20,240 2,475,174 Total $ 11,182 $ 1,909,125 $ 10,114 $ 633,493 $ 21,296 $ 2,542,618	December 31, 2014 Less than 12 months 12 months or more Total (In thousands) Gross unrealized losses Estimated fair value Gross unrealized losses Estimated fair value Gross unrealized losses Estimated fair value Held-to-maturity Municipal securities $ 527 $ 62,762 $ 277 $ 14,003 $ 804 $ 76,765 Asset-backed securities: Trust preferred securities – banks and insurance 53 122 40,309 57,186 40,362 57,308 580 62,884 40,586 71,189 41,166 134,073 Available-for-sale U.S. Government agencies and corporations: Agency securities 4,510 295,694 3,833 101,188 8,343 396,882 Agency guaranteed mortgage-backed securities 1,914 425,114 191 12,124 2,105 437,238 Small Business Administration loan-backed securities 5,869 495,817 3,022 175,523 8,891 671,340 Municipal securities 258 36,551 687 4,616 945 41,167 Asset-backed securities: Trust preferred securities – banks and insurance — — 121,984 405,605 121,984 405,605 Other 7 1,607 — — 7 1,607 12,558 1,254,783 129,717 699,056 142,275 1,953,839 Money market mutual funds and other 1,044 71,907 — — 1,044 71,907 13,602 1,326,690 129,717 699,056 143,319 2,025,746 Total $ 14,182 $ 1,389,574 $ 170,303 $ 770,245 $ 184,485 $ 2,159,819
Rollforward Of Total Amount Of Credit-Related OTTI	(In thousands) Three Months Ended Nine Months Ended HTM AFS Total HTM AFS Total Balance of credit-related OTTI at beginning of period $ — $ — $ — $ (9,079 ) $ (95,472 ) $ (104,551 ) Reductions for securities sold or paid off during the period — — — — 104,551 104,551 Reclassification of securities from HTM to AFS — — — 9,079 (9,079 ) — Balance of credit-related OTTI at end of period $ — $ — $ — $ — $ — $ — (In thousands) Three Months Ended Nine Months Ended HTM AFS Total HTM AFS Total Balance of credit-related OTTI at beginning of period $ (9,079 ) $ (163,914 ) $ (172,993 ) $ (9,052 ) $ (176,833 ) $ (185,885 ) Additions recognized in earnings during the period: Additional credit-related OTTI on securities previously impaired — — — (27 ) — (27 ) Reductions for securities sold or paid off during the period — 44,929 44,929 — 57,848 57,848 Balance of credit-related OTTI at end of period $ (9,079 ) $ (118,985 ) $ (128,064 ) $ (9,079 ) $ (118,985 ) $ (128,064 )
Gains And Losses, Including OTTI, Recognized In Statement Of Income	Three Months Ended Nine Months Ended September 30, 2015 September 30, 2014 September 30, 2015 September 30, 2014 (In thousands) Gross gains Gross losses Gross gains Gross losses Gross gains Gross losses Gross gains Gross losses Investment securities: Held-to-maturity $ — $ — $ 2 $ — $ 1 $ — $ 2 $ 27 Available-for-sale 6 59 5,873 20,063 8,366 147,572 83,466 62,948 Other noninterest-bearing investments 14,267 10,637 5,911 5,184 23,870 11,571 10,568 5,184 14,273 10,696 11,786 25,247 32,237 159,143 94,036 68,159 Net gains (losses) $ 3,577 $ (13,461 ) $ (126,906 ) $ 25,877 Statement of income information: Net impairment losses on investment securities $ — $ — $ — $ (27 ) Equity securities gains, net 3,630 440 11,822 3,865 Fixed income securities gains (losses), net (53 ) (13,901 ) (138,728 ) 22,039 Net gains (losses) $ 3,577 $ (13,461 ) $ (126,906 ) $ 25,877
Tax and Nontaxable Interest Income by Investment Type [Table Text Block]	(In thousands) Three Months Ended Nine Months Ended Taxable Nontaxable Total Taxable Nontaxable Total Investment securities: Held-to-maturity $ 3,031 $ 2,629 $ 5,660 $ 9,716 $ 8,265 $ 17,981 Available-for-sale 23,427 699 24,126 64,832 2,047 66,879 Trading 445 — 445 1,653 — 1,653 $ 26,903 $ 3,328 $ 30,231 $ 76,201 $ 10,312 $ 86,513

Loans And Allowance For Credi26

Loans And Allowance For Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Quantitative Information about Transferred Financial Assets that have been Derecognized and Other Financial Assets Managed Together [Table Text Block]	(In billions) September 30, December 31, Loan Servicing Assets $ 1.2 $ 1.2
Summary Of Major Portfolio Segment And Specific Loan Class	(In thousands) September 30, December 31, Loans held for sale $ 139,122 $ 132,504 Commercial: Commercial and industrial $ 13,035,251 $ 13,162,955 Leasing 426,781 408,974 Owner occupied 7,141,360 7,351,548 Municipal 600,258 520,887 Total commercial 21,203,650 21,444,364 Commercial real estate: Construction and land development 2,213,465 1,986,408 Term 8,089,258 8,126,600 Total commercial real estate 10,302,723 10,113,008 Consumer: Home equity credit line 2,347,061 2,321,150 1-4 family residential 5,268,840 5,200,882 Construction and other consumer real estate 370,015 370,542 Bankcard and other revolving plans 427,849 401,352 Other 192,985 212,360 Total consumer 8,606,750 8,506,286 Total loans $ 40,113,123 $ 40,063,658
Summary Of Changes in The Allowance For Credit Losses	Changes in the allowance for credit losses are summarized as follows: Three Months Ended September 30, 2015 (In thousands) Commercial Commercial real estate Consumer Total Allowance for loan losses Balance at beginning of period $ 437,770 $ 125,796 $ 45,809 $ 609,375 Additions: Provision for loan losses 22,417 (6,621 ) 2,466 18,262 Adjustment for FDIC-supported/PCI loans — — — — Deductions: Gross loan and lease charge-offs (36,961 ) (1,068 ) (4,330 ) (42,359 ) Recoveries 4,471 4,162 2,529 11,162 Net loan and lease charge-offs (32,490 ) 3,094 (1,801 ) (31,197 ) Balance at end of period $ 427,697 $ 122,269 $ 46,474 $ 596,440 Reserve for unfunded lending commitments Balance at beginning of period $ 60,774 $ 18,639 $ 548 $ 79,961 Provision charged (credited) to earnings 2,808 (1,467 ) 87 1,428 Balance at end of period $ 63,582 $ 17,172 $ 635 $ 81,389 Total allowance for credit losses at end of period Allowance for loan losses $ 427,697 $ 122,269 $ 46,474 $ 596,440 Reserve for unfunded lending commitments 63,582 17,172 635 81,389 Total allowance for credit losses $ 491,279 $ 139,441 $ 47,109 $ 677,829 Nine Months Ended September 30, 2015 (In thousands) Commercial Commercial real estate Consumer Total Allowance for loan losses Balance at beginning of period $ 412,514 $ 145,009 $ 47,140 $ 604,663 Additions: Provision for loan losses 53,292 (38,491 ) 2,533 17,334 Adjustment for FDIC-supported/PCI loans (57 ) 57 — — Deductions: Gross loan and lease charge-offs (76,734 ) (5,637 ) (11,224 ) (93,595 ) Recoveries 38,682 21,331 8,025 68,038 Net loan and lease charge-offs (38,052 ) 15,694 (3,199 ) (25,557 ) Balance at end of period $ 427,697 $ 122,269 $ 46,474 $ 596,440 Reserve for unfunded lending commitments Balance at beginning of period $ 58,931 $ 21,517 $ 628 $ 81,076 Provision charged (credited) to earnings 4,651 (4,345 ) 7 313 Balance at end of period $ 63,582 $ 17,172 $ 635 $ 81,389 Total allowance for credit losses at end of period Allowance for loan losses $ 427,697 $ 122,269 $ 46,474 $ 596,440 Reserve for unfunded lending commitments 63,582 17,172 635 81,389 Total allowance for credit losses $ 491,279 $ 139,441 $ 47,109 $ 677,829 Three Months Ended September 30, 2014 (In thousands) Commercial Commercial real estate Consumer Total Allowance for loan losses Balance at beginning of period $ 442,965 $ 187,940 $ 45,002 $ 675,907 Additions: Provision for loan losses (19,960 ) (34,187 ) (496 ) (54,643 ) Adjustment for FDIC-supported/PCI loans (25 ) — — (25 ) Deductions: Gross loan and lease charge-offs (20,084 ) (3,320 ) (3,067 ) (26,471 ) Recoveries 9,149 3,332 3,028 15,509 Net loan and lease charge-offs (10,935 ) 12 (39 ) (10,962 ) Balance at end of period $ 412,045 $ 153,765 $ 44,467 $ 610,277 Reserve for unfunded lending commitments Balance at beginning of period $ 52,801 $ 38,689 $ 3,982 $ 95,472 Provision charged (credited) to earnings 1,651 (14,390 ) (3,356 ) (16,095 ) Balance at end of period $ 54,452 $ 24,299 $ 626 $ 79,377 Total allowance for credit losses at end of period Allowance for loan losses $ 412,045 $ 153,765 $ 44,467 $ 610,277 Reserve for unfunded lending commitments 54,452 24,299 626 79,377 Total allowance for credit losses $ 466,497 $ 178,064 $ 45,093 $ 689,654 Nine Months Ended September 30, 2014 (In thousands) Commercial Commercial real estate Consumer Total Allowance for loan losses Balance at beginning of period $ 469,213 $ 216,012 $ 61,066 $ 746,291 Additions: Provision for loan losses (38,274 ) (57,350 ) (14,045 ) (109,669 ) Adjustment for FDIC-supported/PCI loans (1,190 ) — (96 ) (1,286 ) Deductions: Gross loan and lease charge-offs (45,903 ) (14,135 ) (10,628 ) (70,666 ) Recoveries 28,199 9,238 8,170 45,607 Net loan and lease charge-offs (17,704 ) (4,897 ) (2,458 ) (25,059 ) Balance at end of period $ 412,045 $ 153,765 $ 44,467 $ 610,277 Reserve for unfunded lending commitments Balance at beginning of period $ 48,345 $ 37,485 $ 3,875 $ 89,705 Provision charged (credited) to earnings 6,107 (13,186 ) (3,249 ) (10,328 ) Balance at end of period $ 54,452 $ 24,299 $ 626 $ 79,377 Total allowance for credit losses at end of period Allowance for loan losses $ 412,045 $ 153,765 $ 44,467 $ 610,277 Reserve for unfunded lending commitments 54,452 24,299 626 79,377 Total allowance for credit losses $ 466,497 $ 178,064 $ 45,093 $ 689,654 The ALLL and outstanding loan balances according to the Company’s impairment method are summarized as follows: September 30, 2015 (In thousands) Commercial Commercial real estate Consumer Total Allowance for loan losses: Individually evaluated for impairment $ 32,191 $ 2,898 $ 11,014 $ 46,103 Collectively evaluated for impairment 394,836 119,286 35,010 549,132 Purchased loans with evidence of credit deterioration 670 85 450 1,205 Total $ 427,697 $ 122,269 $ 46,474 $ 596,440 Outstanding loan balances: Individually evaluated for impairment $ 279,928 $ 122,063 $ 92,612 $ 494,603 Collectively evaluated for impairment 20,859,442 10,122,697 8,503,160 39,485,299 Purchased loans with evidence of credit deterioration 64,280 57,963 10,978 133,221 Total $ 21,203,650 $ 10,302,723 $ 8,606,750 $ 40,113,123
Summary Of Nonaccrual Loans	Nonaccrual loans are summarized as follows: (In thousands) September 30, December 31, Commercial: Commercial and industrial $ 167,136 $ 105,591 Leasing 306 295 Owner occupied 76,624 87,243 Municipal 967 1,056 Total commercial 245,033 194,185 Commercial real estate: Construction and land development 15,202 23,880 Term 39,053 25,107 Total commercial real estate 54,255 48,987 Consumer: Home equity credit line 9,792 11,430 1-4 family residential 48,592 49,861 Construction and other consumer real estate 765 1,735 Bankcard and other revolving plans 563 196 Other 272 254 Total consumer loans 59,984 63,476 Total $ 359,272 $ 306,648
Summary Of Past Due Loans (Accruing And Nonaccruing)	Past due loans (accruing and nonaccruing) are summarized as follows: September 30, 2015 (In thousands) Current 30-89 days past due 90+ days past due Total past due Total loans Accruing loans 90+ days past due Nonaccrual loans that are current 1 Commercial: Commercial and industrial $ 12,909,622 $ 79,246 $ 46,383 $ 125,629 $ 13,035,251 $ 4,951 $ 90,584 Leasing 423,071 3,557 153 3,710 426,781 — 55 Owner occupied 7,077,386 33,198 30,776 63,974 7,141,360 5,443 46,283 Municipal 600,210 48 — 48 600,258 — 967 Total commercial 21,010,289 116,049 77,312 193,361 21,203,650 10,394 137,889 Commercial real estate: Construction and land development 2,195,193 12,447 5,825 18,272 2,213,465 2,296 10,914 Term 8,039,923 15,578 33,757 49,335 8,089,258 20,503 23,188 Total commercial real estate 10,235,116 28,025 39,582 67,607 10,302,723 22,799 34,102 Consumer: Home equity credit line 2,336,740 4,694 5,627 10,321 2,347,061 — 2,592 1-4 family residential 5,231,005 10,137 27,698 37,835 5,268,840 877 18,739 Construction and other consumer real estate 364,283 5,524 208 5,732 370,015 — 401 Bankcard and other revolving plans 425,041 1,621 1,187 2,808 427,849 787 114 Other 192,042 877 66 943 192,985 — 46 Total consumer loans 8,549,111 22,853 34,786 57,639 8,606,750 1,664 21,892 Total $ 39,794,516 $ 166,927 $ 151,680 $ 318,607 $ 40,113,123 $ 34,857 $ 193,883 December 31, 2014 (In thousands) Current 30-89 days past due 90+ days past due Total past due Total loans Accruing loans 90+ days past due Nonaccrual loans that are current 1 Commercial: Commercial and industrial $ 13,092,731 $ 28,295 $ 41,929 $ 70,224 $ 13,162,955 $ 4,677 $ 64,385 Leasing 408,724 225 25 250 408,974 — 270 Owner occupied 7,275,842 29,182 46,524 75,706 7,351,548 3,334 39,649 Municipal 520,887 — — — 520,887 — 1,056 Total commercial 21,298,184 57,702 88,478 146,180 21,444,364 8,011 105,360 Commercial real estate: Construction and land development 1,972,206 2,711 11,491 14,202 1,986,408 92 12,481 Term 8,082,940 14,415 29,245 43,660 8,126,600 19,700 13,787 Total commercial real estate 10,055,146 17,126 40,736 57,862 10,113,008 19,792 26,268 Consumer: Home equity credit line 2,309,967 4,503 6,680 11,183 2,321,150 1 1,779 1-4 family residential 5,163,610 12,416 24,856 37,272 5,200,882 318 20,599 Construction and other consumer real estate 359,723 9,675 1,144 10,819 370,542 160 608 Bankcard and other revolving plans 397,882 2,425 1,045 3,470 401,352 946 80 Other 211,560 644 156 800 212,360 — 84 Total consumer loans 8,442,742 29,663 33,881 63,544 8,506,286 1,425 23,150 Total $ 39,796,072 $ 104,491 $ 163,095 $ 267,586 $ 40,063,658 $ 29,228 $ 154,778 1 Represents nonaccrual loans that are not past due more than 30 days; however, full payment of principal and interest is still not expected.
Summary Of Outstanding Loan Balances (Accruing And Nonaccruing) Categorized By Credit Quality Indicators	September 30, 2015 (In thousands) Pass Special Mention Sub- standard Doubtful Total loans Total allowance Commercial: Commercial and industrial $ 12,037,219 $ 281,696 $ 709,086 $ 7,250 $ 13,035,251 Leasing 400,233 3,015 23,533 — 426,781 Owner occupied 6,684,216 142,204 314,940 — 7,141,360 Municipal 599,243 48 967 — 600,258 Total commercial 19,720,911 426,963 1,048,526 7,250 21,203,650 $ 427,697 Commercial real estate: Construction and land development 2,166,381 19,138 27,946 — 2,213,465 Term 7,862,956 59,689 166,613 — 8,089,258 Total commercial real estate 10,029,337 78,827 194,559 — 10,302,723 122,269 Consumer: Home equity credit line 2,333,240 — 13,821 — 2,347,061 1-4 family residential 5,214,015 — 54,825 — 5,268,840 Construction and other consumer real estate 368,363 — 1,652 — 370,015 Bankcard and other revolving plans 425,979 — 1,870 — 427,849 Other 192,564 — 421 — 192,985 Total consumer loans 8,534,161 — 72,589 — 8,606,750 46,474 Total $ 38,284,409 $ 505,790 $ 1,315,674 $ 7,250 $ 40,113,123 $ 596,440 December 31, 2014 (In thousands) Pass Special Mention Sub- standard Doubtful Total loans Total allowance Commercial: Commercial and industrial $ 12,515,846 $ 209,215 $ 426,002 $ 11,892 $ 13,162,955 Leasing 399,032 4,868 5,074 — 408,974 Owner occupied 6,844,310 168,423 338,815 — 7,351,548 Municipal 518,513 1,318 1,056 — 520,887 Total commercial 20,277,701 383,824 770,947 11,892 21,444,364 $ 412,514 Commercial real estate: Construction and land development 1,925,685 8,464 52,259 — 1,986,408 Term 7,802,571 96,347 223,324 4,358 8,126,600 Total commercial real estate 9,728,256 104,811 275,583 4,358 10,113,008 145,009 Consumer: Home equity credit line 2,304,352 — 16,798 — 2,321,150 1-4 family residential 5,138,660 — 62,222 — 5,200,882 Construction and other consumer real estate 367,932 — 2,610 — 370,542 Bankcard and other revolving plans 399,446 — 1,906 — 401,352 Other 211,811 — 549 — 212,360 Total consumer loans 8,422,201 — 84,085 — 8,506,286 47,140 Total $ 38,428,158 $ 488,635 $ 1,130,615 $ 16,250 $ 40,063,658 $ 604,663
Summary Of Information On Impaired Loans	The ALLL and outstanding loan balances according to the Company’s impairment method are summarized as follows: September 30, 2015 (In thousands) Commercial Commercial real estate Consumer Total Allowance for loan losses: Individually evaluated for impairment $ 32,191 $ 2,898 $ 11,014 $ 46,103 Collectively evaluated for impairment 394,836 119,286 35,010 549,132 Purchased loans with evidence of credit deterioration 670 85 450 1,205 Total $ 427,697 $ 122,269 $ 46,474 $ 596,440 Outstanding loan balances: Individually evaluated for impairment $ 279,928 $ 122,063 $ 92,612 $ 494,603 Collectively evaluated for impairment 20,859,442 10,122,697 8,503,160 39,485,299 Purchased loans with evidence of credit deterioration 64,280 57,963 10,978 133,221 Total $ 21,203,650 $ 10,302,723 $ 8,606,750 $ 40,113,123 December 31, 2014 (In thousands) Commercial Commercial real estate Consumer Total Allowance for loan losses: Individually evaluated for impairment $ 28,627 $ 4,027 $ 9,059 $ 41,713 Collectively evaluated for impairment 382,552 140,090 37,508 560,150 Purchased loans with evidence of credit deterioration 1,335 892 573 2,800 Total $ 412,514 $ 145,009 $ 47,140 $ 604,663 Outstanding loan balances: Individually evaluated for impairment $ 259,207 $ 167,435 $ 95,267 $ 521,909 Collectively evaluated for impairment 21,105,217 9,861,862 8,395,371 39,362,450 Purchased loans with evidence of credit deterioration 79,940 83,711 15,648 179,299 Total $ 21,444,364 $ 10,113,008 $ 8,506,286 $ 40,063,658 September 30, 2015 (In thousands) Unpaid principal balance Recorded investment Total recorded investment Related allowance with no allowance with allowance Commercial: Commercial and industrial $ 245,404 $ 37,843 $ 156,665 $ 194,508 $ 26,888 Owner occupied 151,243 83,527 48,400 131,927 5,091 Municipal 1,446 967 — 967 — Total commercial 398,093 122,337 205,065 327,402 31,979 Commercial real estate: Construction and land development 47,876 7,486 23,800 31,286 1,068 Term 138,865 90,294 27,856 118,150 1,463 Total commercial real estate 186,741 97,780 51,656 149,436 2,531 Consumer: Home equity credit line 28,358 20,672 4,703 25,375 419 1-4 family residential 72,855 29,257 40,465 69,722 10,090 Construction and other consumer real estate 2,966 1,069 1,106 2,175 181 Other 3,843 36 3,162 3,198 294 Total consumer loans 108,022 51,034 49,436 100,470 10,984 Total $ 692,856 $ 271,151 $ 306,157 $ 577,308 $ 45,494 December 31, 2014 (In thousands) Unpaid principal balance Recorded investment Total recorded investment Related allowance with no allowance with allowance Commercial: Commercial and industrial $ 185,520 $ 43,257 $ 103,565 $ 146,822 $ 22,852 Owner occupied 198,231 83,179 86,382 169,561 6,087 Municipal 1,535 1,056 — 1,056 — Total commercial 385,286 127,492 189,947 317,439 28,939 Commercial real estate: Construction and land development 60,993 16,500 26,977 43,477 1,773 Term 203,788 96,351 63,740 160,091 2,345 Total commercial real estate 264,781 112,851 90,717 203,568 4,118 Consumer: Home equity credit line 30,209 14,798 11,883 26,681 437 1-4 family residential 86,575 37,096 35,831 72,927 8,494 Construction and other consumer real estate 3,902 1,449 1,410 2,859 233 Other 6,580 — 5,254 5,254 133 Total consumer loans 127,266 53,343 54,378 107,721 9,297 Total $ 777,333 $ 293,686 $ 335,042 $ 628,728 $ 42,354 Three Months Ended Nine Months Ended (In thousands) Average recorded investment Interest income recognized Average recorded investment Interest income recognized Commercial: Commercial and industrial $ 191,642 $ 1,314 $ 158,825 $ 5,525 Owner occupied 138,194 2,752 135,212 9,706 Municipal 978 — 1,007 — Total commercial 330,814 4,066 295,044 15,231 Commercial real estate: Construction and land development 31,506 499 31,920 2,691 Term 119,694 3,705 124,446 13,383 Total commercial real estate 151,200 4,204 156,366 16,074 Consumer: Home equity credit line 25,095 401 24,329 1,206 1-4 family residential 90,240 398 91,671 1,803 Construction and other consumer real estate 5,540 32 2,342 91 Bankcard and other revolving plans — 1 1 101 Other 36 177 4,109 692 Total consumer loans 120,911 1,009 122,452 3,893 Total $ 602,925 $ 9,279 $ 573,862 $ 35,198 Three Months Ended Nine Months Ended (In thousands) Average recorded investment Interest income recognized Average recorded investment Interest income recognized Commercial: Commercial and industrial $ 186,026 $ 2,335 $ 180,130 $ 8,819 Owner occupied 232,484 4,514 235,380 13,774 Municipal 8,798 — 9,343 — Total commercial 427,308 6,849 424,853 22,593 Commercial real estate: Construction and land development 59,735 515 62,404 5,398 Term 225,536 5,670 248,587 26,118 Total commercial real estate 285,271 6,185 310,991 31,516 Consumer: Home equity credit line 26,328 369 25,756 1,139 1-4 family residential 81,116 556 81,168 1,583 Construction and other consumer real estate 3,226 43 3,112 115 Bankcard and other revolving plans — 1 3 2 Other 6,284 384 7,333 1,315 Total consumer loans 116,954 1,353 117,372 4,154 Total $ 829,533 $ 14,387 $ 853,216 $ 58,263
Summary Of Selected Information On TDRs That Includes Recorded Investment On An Accruing And Nonaccruing Basis By Loan Class And Modification Type	Three Months Ended Nine Months Ended (In thousands) Accruing Nonaccruing Total Accruing Nonaccruing Total Commercial: Commercial and industrial $ — $ 9 $ 9 $ — $ 104 $ 104 Owner occupied — — — — 943 943 Total commercial — 9 9 — 1,047 1,047 Commercial real estate: Construction and land development — — — — — — Term — — — — 833 833 Total commercial real estate — — — — 833 833 Consumer: Home equity credit line — — — — — — 1-4 family residential — 595 595 — 595 595 Construction and other consumer real estate — — — — — — Total consumer loans — 595 595 — 595 595 Total $ — $ 604 $ 604 $ — $ 2,475 $ 2,475 Three Months Ended Nine Months Ended (In thousands) Accruing Nonaccruing Total Accruing Nonaccruing Total Commercial: Commercial and industrial $ 96 $ 633 $ 729 $ 96 $ 752 $ 848 Owner occupied — 1,025 1,025 — 1,025 1,025 Total commercial 96 1,658 1,754 96 1,777 1,873 Commercial real estate: Construction and land development — — — — — — Term — — — — — — Total commercial real estate — — — — — — Consumer: Home equity credit line — 158 158 — 201 201 1-4 family residential — 353 353 — 353 353 Construction and other consumer real estate — — — — 39 39 Total consumer loans — 511 511 — 593 593 Total $ 96 $ 2,169 $ 2,265 $ 96 $ 2,370 $ 2,466 Note: Total loans modified as TDRs during the 12 months previous to September 30, 2015 and 2014 were $93.4 million and September 30, 2015 Recorded investment resulting from the following modification types: (In thousands) Interest rate below market Maturity or term extension Principal forgiveness Payment deferral Other 1 Multiple modification types 2 Total Accruing Commercial: Commercial and industrial $ 455 $ 3,906 $ 14 $ 108 $ 223 $ 35,228 $ 39,934 Owner occupied 2,034 701 938 — 8,151 17,172 28,996 Total commercial 2,489 4,607 952 108 8,374 52,400 68,930 Commercial real estate: Construction and land development 97 — — — — 13,431 13,528 Term 4,758 766 170 975 2,409 20,825 29,903 Total commercial real estate 4,855 766 170 975 2,409 34,256 43,431 Consumer: Home equity credit line 192 1,060 11,143 — 164 2,360 14,919 1-4 family residential 2,482 358 7,388 435 3,474 34,901 49,038 Construction and other consumer real estate 177 488 — — — 1,153 1,818 Total consumer loans 2,851 1,906 18,531 435 3,638 38,414 65,775 Total accruing 10,195 7,279 19,653 1,518 14,421 125,070 178,136 Nonaccruing Commercial: Commercial and industrial 90 471 — 2,018 5,351 37,950 45,880 Owner occupied 1,220 1,742 — 5,833 36 9,060 17,891 Municipal — 967 — — — — 967 Total commercial 1,310 3,180 — 7,851 5,387 47,010 64,738 Commercial real estate: Construction and land development 10,512 354 — — 3,197 968 15,031 Term 2,456 — 833 — 2,899 9,919 16,107 Total commercial real estate 12,968 354 833 — 6,096 10,887 31,138 Consumer: Home equity credit line 8 514 512 58 — 48 1,140 1-4 family residential — 268 2,085 173 1,227 7,325 11,078 Construction and other consumer real estate — 143 18 60 — 72 293 Total consumer loans 8 925 2,615 291 1,227 7,445 12,511 Total nonaccruing 14,286 4,459 3,448 8,142 12,710 65,342 108,387 Total $ 24,481 $ 11,738 $ 23,101 $ 9,660 $ 27,131 $ 190,412 $ 286,523 December 31, 2014 Recorded investment resulting from the following modification types: (In thousands) Interest rate below market Maturity or term extension Principal forgiveness Payment deferral Other 1 Multiple modification types 2 Total Accruing Commercial: Commercial and industrial $ 2,611 $ 6,509 $ 18 $ 3,203 $ 3,855 $ 34,585 $ 50,781 Owner occupied 19,981 1,124 960 1,251 10,960 17,505 51,781 Total commercial 22,592 7,633 978 4,454 14,815 52,090 102,562 Commercial real estate: Construction and land development — — — — 521 19,854 20,375 Term 7,328 9,027 179 3,153 2,546 39,007 61,240 Total commercial real estate 7,328 9,027 179 3,153 3,067 58,861 81,615 Consumer: Home equity credit line 742 70 11,320 — 166 1,281 13,579 1-4 family residential 2,425 552 6,828 446 753 34,719 45,723 Construction and other consumer real estate 290 422 42 90 — 1,227 2,071 Total consumer loans 3,457 1,044 18,190 536 919 37,227 61,373 Total accruing 33,377 17,704 19,347 8,143 18,801 148,178 245,550 Nonaccruing Commercial: Commercial and industrial 442 576 — 611 5,199 20,410 27,238 Owner occupied 2,714 1,219 — 883 2,852 12,040 19,708 Municipal — 1,056 — — — — 1,056 Total commercial 3,156 2,851 — 1,494 8,051 32,450 48,002 Commercial real estate: Construction and land development 11,080 68 — 93 3,300 6,427 20,968 Term 2,851 — — — 277 4,607 7,735 Total commercial real estate 13,931 68 — 93 3,577 11,034 28,703 Consumer: Home equity credit line — — 420 203 — 399 1,022 1-4 family residential 3,378 1,029 1,951 191 3,527 9,413 19,489 Construction and other consumer real estate — 463 — — — 100 563 Total consumer loans 3,378 1,492 2,371 394 3,527 9,912 21,074 Total nonaccruing 20,465 4,411 2,371 1,981 15,155 53,396 97,779 Total $ 53,842 $ 22,115 $ 21,718 $ 10,124 $ 33,956 $ 201,574 $ 343,329 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.
Schedule Of Net Financial Impact On Interest Income Due To Interest Rate Modifications Below Market For Accruing TDR Loans	Three Months Ended Nine Months Ended (In thousands) 2015 2014 2015 2014 Commercial: Commercial and industrial $ (67 ) $ (36 ) $ (189 ) $ (34 ) Owner occupied (46 ) (124 ) (230 ) (400 ) Total commercial (113 ) (160 ) (419 ) (434 ) Commercial real estate: Construction and land development (26 ) (48 ) (88 ) (154 ) Term (84 ) (150 ) (295 ) (435 ) Total commercial real estate (110 ) (198 ) (383 ) (589 ) Consumer: Home equity credit line — (1 ) (1 ) (4 ) 1-4 family residential (260 ) (276 ) (800 ) (863 ) Construction and other consumer real estate (7 ) (8 ) (21 ) (25 ) Total consumer loans (267 ) (285 ) (822 ) (892 ) Total decrease to interest income 1 $ (490 ) $ (643 ) $ (1,624 ) $ (1,915 ) 1 Calculated based on the difference between the modified rate and the premodified rate applied to the recorded investment.
Schedule Of Outstanding Balances Of All Required Payments And The Related Carrying Amounts For PCI Loans	(In thousands) September 30, 2015 December 31, 2014 Commercial $ 78,180 $ 104,942 Commercial real estate 81,012 118,217 Consumer 12,204 17,910 Outstanding balance $ 171,396 $ 241,069 Carrying amount $ 133,221 $ 179,299 Less ALLL 1,205 2,800 Carrying amount, net $ 132,016 $ 176,499
Schedule Of Changes In The Accretable Yield For PCI Loans	(In thousands) Three Months Ended Nine Months Ended 2015 2014 2015 2014 Balance at beginning of period $ 46,702 $ 60,834 $ 45,055 $ 77,528 Accretion (7,535 ) (10,279 ) (28,792 ) (46,767 ) Reclassification from nonaccretable difference 1,005 2,955 18,865 17,406 Disposals and other 1,126 (38 ) 6,170 5,305 Balance at end of period $ 41,298 $ 53,472 $ 41,298 $ 53,472 Note: Amounts have been adjusted based on refinements to the original estimates of the accretable yield.

Derivative Instruments And He27

Derivative Instruments And Hedging Activities Derivative Instruments and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2015
Summary of Derivative Instruments [Abstract]
Schedule of Derivative Instruments	September 30, 2015 December 31, 2014 Notional amount Fair value Notional amount Fair value (In thousands) Other assets Other liabilities Other assets Other liabilities Derivatives designated as hedging instruments Asset derivatives Cash flow hedges: Interest rate swaps $ 1,387,500 $ 17,367 $ — $ 275,000 $ 1,508 $ 123 Total derivatives designated as hedging instruments 1,387,500 17,367 — 275,000 1,508 123 Derivatives not designated as hedging instruments Interest rate swaps for customers 2 3,237,694 66,805 69,991 2,770,052 48,287 50,669 Foreign exchange 340,818 18,947 16,372 443,721 16,625 15,272 Total derivatives not designated as hedging instruments 3,578,512 85,752 86,363 3,213,773 64,912 65,941 Total derivatives $ 4,966,012 $ 103,119 $ 86,363 $ 3,488,773 $ 66,420 $ 66,064
Schedule Of Gain (Loss) Of Derivative Instruments	Three Months Ended September 30, 2015 Nine Months Ended September 30, 2015 Amount of derivative gain (loss) recognized/reclassified (In thousands) OCI Reclassified 3 Noninterest income (expense) Offset to interest expense OCI Reclassified from AOCI to interest income 3 Noninterest income (expense) Offset to interest expense Derivatives designated as hedging instruments Asset derivatives Cash flow hedges 1 : Interest rate swaps $ 17,343 $ 2,957 $ 21,172 $ 5,191 17,343 2,957 21,172 5,191 Liability derivatives Fair value hedges: Terminated swaps on long-term debt $ 431 $ 1,364 Total derivatives designated as hedging instruments 17,343 2,957 431 21,172 5,191 1,364 Derivatives not designated as hedging instruments Interest rate swaps for customers 2 $ 939 $ 5,329 Futures contracts 1 2 Foreign exchange 2,506 6,938 Total derivatives not designated as hedging instruments 3,446 12,269 Total derivatives $ 17,343 $ 2,957 $ 3,446 $ 431 $ 21,172 $ 5,191 $ 12,269 $ 1,364 Three Months Ended September 30, 2014 Nine Months Ended September 30, 2014 Amount of derivative gain (loss) recognized/reclassified (In thousands) OCI Reclassified 3 Noninterest income (expense) Offset to interest expense OCI Reclassified from AOCI to interest income 3 Noninterest income (expense) Offset to interest expense Derivatives designated as hedging instruments Asset derivatives Cash flow hedges 1 : Interest rate swaps $ (845 ) $ 770 $ 1,681 $ 1,698 (845 ) 770 1,681 1,698 Liability derivatives Fair value hedges: Terminated swaps on long-term debt $ 496 $ 1,822 Total derivatives designated as hedging instruments (845 ) 770 496 1,681 1,698 1,822 Derivatives not designated as hedging instruments Interest rate swaps $ 1 $ 355 Interest rate swaps for customers 2 1,419 493 Foreign exchange 2,242 5,951 Total return swap — (7,894 ) Total derivatives not designated as hedging instruments 3,662 (1,095 ) Total derivatives $ (845 ) $ 770 $ 3,662 $ 496 $ 1,681 $ 1,698 $ (1,095 ) $ 1,822 Note: These schedules are not intended to present at any given time the Company’s long/short position with respect to its derivative contracts. 1 Amounts recognized in OCI and reclassified from AOCI represent the effective portion of the derivative gain. 2 Notional amounts include both the customer swaps and the offsetting derivative contracts. 3 Amounts for the three and nine months ended September 30 , of $3.0 million and $5.2 million in 2015 , and $0.8 million and $1.7 million in 2014 , respectively, are the amounts of reclassification to earnings from AOCI presented in Note 8.

Debt And Shareholders' Equity (

Debt And Shareholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2015
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Minimum and Maximum Interest Rate on debt repayment [Table Text Block]	Interest rate Minimum interest rate Maximum interest rate Minimum and maximum Interest rates on long-term senior debt redemptions during 1st and 2nd quarters
Schedule of Long-term Debt Instruments [Table Text Block]	Long-term debt is summarized as follows: (In thousands) September 30, December 31, 2014 Junior subordinated debentures related to trust preferred securities $ 164,950 $ 168,043 Convertible subordinated notes 70,119 132,838 Subordinated notes 302,102 335,798 Senior notes 406,631 432,385 FHLB advances — 22,156 Capital lease obligations 950 1,062 Total $ 944,752 $ 1,092,282
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]	Amounts reclassified from AOCI 1 Statement of income (SI) Balance sheet (BS) (In thousands) Three Months Ended Nine Months Ended Details about AOCI components 2015 2014 2015 2014 Affected line item Net realized gains (losses) on investment securities $ (53 ) $ (13,901 ) $ (138,728 ) $ 22,039 SI Fixed income securities gains (losses), net Income tax expense (benefit) (20 ) (6,015 ) (52,883 ) 1,981 (33 ) (7,886 ) (85,845 ) 20,058 Net unrealized losses on investment securities — — — (27 ) SI Net impairment losses on investment securities Income tax benefit — — — (10 ) — — — (17 ) Accretion of securities with noncredit-related impairment losses not expected to be sold — (467 ) — (1,411 ) BS Investment securities, held-to-maturity Deferred income taxes — 191 — 576 BS Other assets $ (33 ) $ (8,162 ) $ (85,845 ) $ 19,206 Net unrealized gains on derivative instruments $ 2,957 $ 770 $ 5,191 $ 1,698 SI Interest and fees on loans Income tax expense 1,127 307 1,979 677 $ 1,830 $ 463 $ 3,212 $ 1,021 1 Negative reclassification amounts indicate decreases to earnings in the statement of income and increases to balance sheet assets. The opposite applies to positive reclassification amounts.
Schedule Of Changes In Accumulated Other Comprehensive Income (Loss)	(In thousands) Net unrealized gains (losses) on investment securities Net unrealized gains (losses) on derivatives and other Pension and post-retirement Total Nine Months Ended September 30, 2015 Balance at December 31, 2014 $ (91,921 ) $ 2,226 $ (38,346 ) $ (128,041 ) Other comprehensive income before reclassifications, net of tax 15,398 13,035 — 28,433 Amounts reclassified from AOCI, net of tax 85,845 (3,212 ) — 82,633 Other comprehensive income 101,243 9,823 — 111,066 Balance at September 30, 2015 $ 9,322 $ 12,049 $ (38,346 ) $ (16,975 ) Income tax expense included in other comprehensive income $ 65,549 $ 6,311 $ — $ 71,860 Nine Months Ended September 30, 2014 Balance at December 31, 2013 $ (168,805 ) $ 1,556 $ (24,852 ) $ (192,101 ) Other comprehensive income before reclassifications, net of tax 100,723 678 — 101,401 Amounts reclassified from AOCI, net of tax (19,206 ) (1,021 ) — (20,227 ) Other comprehensive income (loss) 81,517 (343 ) — 81,174 Balance at September 30, 2014 $ (87,288 ) $ 1,213 $ (24,852 ) $ (110,927 ) Income tax expense (benefit) included in other comprehensive income (loss) $ 61,714 $ (214 ) $ — $ 61,500

Debt And Shareholders' Equity S

Debt And Shareholders' Equity Schedule of Long-term Debt Instruments (Tables)	9 Months Ended
	Sep. 30, 2015
Debt Instrument [Line Items]
Schedule of Long-term Debt Instruments [Table Text Block]	Long-term debt is summarized as follows: (In thousands) September 30, December 31, 2014 Junior subordinated debentures related to trust preferred securities $ 164,950 $ 168,043 Convertible subordinated notes 70,119 132,838 Subordinated notes 302,102 335,798 Senior notes 406,631 432,385 FHLB advances — 22,156 Capital lease obligations 950 1,062 Total $ 944,752 $ 1,092,282

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Schedule Of Assets And Liabilities Measured At Fair Value By Class On A Recurring Basis	(In thousands) September 30, 2015 Level 1 Level 2 Level 3 Total ASSETS Investment securities: Available-for-sale: U.S. Treasury, agencies and corporations $ — $ 5,741,982 $ — $ 5,741,982 Municipal securities 213,398 213,398 Other debt securities 22,767 22,767 Money market mutual funds and other 18,509 3,355 21,864 18,509 5,981,502 — 6,000,011 Trading account 73,521 73,521 Other noninterest-bearing investments: Bank-owned life insurance 482,199 482,199 Private equity investments 120,195 120,195 Other assets: Agriculture loan servicing and interest-only strips 13,161 13,161 Deferred compensation plan assets 83,703 83,703 Derivatives: Interest rate related and other 18,270 18,270 Interest rate swaps for customers 66,805 66,805 Foreign currency exchange contracts 18,947 18,947 18,947 85,075 — 104,022 $ 121,159 $ 6,622,297 $ 133,356 $ 6,876,812 LIABILITIES Securities sold, not yet purchased $ 29,566 $ — $ — $ 29,566 Other liabilities: Deferred compensation plan obligations 83,703 83,703 Derivatives: Interest rate related and other 245 245 Interest rate swaps for customers 69,991 69,991 Foreign currency exchange contracts 16,372 16,372 16,372 70,236 — 86,608 $ 129,641 $ 70,236 $ — $ 199,877 (In thousands) December 31, 2014 Level 1 Level 2 Level 3 Total ASSETS Investment securities: Available-for-sale: U.S. Treasury, agencies and corporations $ — $ 3,098,208 $ — $ 3,098,208 Municipal securities 185,093 4,164 189,257 Asset-backed securities: Trust preferred – banks and insurance 22,701 393,007 415,708 Auction rate 4,761 4,761 Other 666 25 691 Money market mutual funds and other 105,348 30,275 135,623 105,348 3,336,943 401,957 3,844,248 Trading account 70,601 70,601 Other noninterest-bearing investments: Bank-owned life insurance 476,290 476,290 Private equity investments 99,865 99,865 Other assets: Agriculture loan servicing and interest-only strips 12,227 12,227 Deferred compensation plan assets 88,878 88,878 Derivatives: Interest rate related and other 1,508 1,508 Interest rate swaps for customers 48,287 48,287 Foreign currency exchange contracts 16,625 16,625 16,625 49,795 — 66,420 $ 210,851 $ 3,933,629 $ 514,049 $ 4,658,529 LIABILITIES Securities sold, not yet purchased $ 24,230 $ — $ — $ 24,230 Other liabilities: Deferred compensation plan obligations 88,878 88,878 Derivatives: Interest rate related and other 297 297 Interest rate swaps for customers 50,669 50,669 Foreign currency exchange contracts 15,272 15,272 15,272 50,966 — 66,238 Other 13 13 $ 128,380 $ 50,966 $ 13 $ 179,359
Schedule Of Assets And Liabilities Measured At Fair Value By Class On A Recurring Basis Using Level 3 Inputs	Level 3 Instruments Three Months Ended September 30, 2015 (In thousands) Municipal securities Trust preferred – banks and insurance Other Private equity investments Ag loan svcg and int-only strips Derivatives and other liabilities Balance at June 30, 2015 $ — $ — $ — $ 110,115 $ 13,502 $ — Net gains (losses) included in: Statement of income: Dividends and other investment income (loss) (620 ) Equity securities gains, net 3,587 Other noninterest loss, net (375 ) Purchases 8,184 234 Sales (126 ) Redemptions and paydowns (945 ) (200 ) Balance at September 30, 2015 $ — $ — $ — $ 120,195 $ 13,161 $ — Level 3 Instruments Nine Months Ended September 30, 2015 (In thousands) Municipal securities Trust preferred – banks and insurance Other Private equity investments Ag loan svcg and int-only strips Derivatives and other liabilities Balance at December 31, 2014 $ 4,164 $ 393,007 $ 4,761 $ 97,649 $ 12,227 $ (13 ) Net gains (losses) included in: Statement of income: Accretion of purchase discount on securities available-for-sale 3 471 Dividends and other investment loss (1,179 ) Equity securities gains, net 7,554 Fixed income securities losses, net (344 ) (136,691 ) (606 ) Other noninterest income, net 1,112 Other noninterest expense 13 Other comprehensive income (loss) 687 141,547 (74 ) Fair value of HTM securities reclassified as AFS 57,308 Purchases 20,498 615 Sales (2,651 ) (440,055 ) (4,081 ) (2,634 ) Redemptions and paydowns (1,859 ) (15,587 ) (1,693 ) (793 ) Balance at September 30, 2015 $ — $ — $ — $ 120,195 $ 13,161 $ — Level 3 Instruments Three Months Ended September 30, 2014 (In thousands) Municipal securities Trust preferred – banks and insurance Trust preferred – REIT 1 Auction rate Other asset-backed Private equity investments Ag loan svcg and int-only strips Derivatives and other liabilities Balance at June 30, 2014 $ 10,038 $ 685,805 $ — $ 6,578 $ 28 $ 82,256 $ 11,461 $ (132 ) Net gains (losses) included in: Statement of income: Accretion of purchase discount on securities available-for-sale 9 480 1 Dividends and other investment income 1,451 Equity securities losses, net (3,684 ) Fixed income securities gains (losses), net 2 (13,956 ) 37 Other noninterest income 139 Other noninterest expense 65 Other comprehensive income 4 45,521 48 Purchases 4,438 531 Sales (155,869 ) (950 ) (1 ) (476 ) Redemptions and paydowns (125 ) (36,511 ) (100 ) (213 ) Balance at September 30, 2014 $ 9,928 $ 525,470 $ — $ 5,714 $ 27 $ 83,885 $ 11,918 $ (67 ) Level 3 Instruments Nine Months Ended September 30, 2014 (In thousands) Municipal securities Trust preferred – banks and insurance Trust preferred – REIT 1 Auction rate Other asset-backed Private equity investments Ag loan svcg and int-only strips Derivatives and other liabilities Balance at December 31, 2013 $ 10,662 $ 1,238,820 $ 22,996 $ 6,599 $ 25,800 $ 82,410 $ 8,852 $ (4,303 ) Net gains (losses) included in: Statement of income: Accretion of purchase discount on securities available-for-sale 27 1,833 3 Dividends and other investment income (loss) (1,296 ) Fair value and nonhedge derivative loss (7,894 ) Equity securities gains, net (3,100 ) Fixed income securities gains, net 18 9,009 1,399 37 10,917 Other noninterest income 665 Other noninterest expense 174 Other comprehensive income (loss) (178 ) 146,861 25 (15 ) Purchases 12,898 2,987 Sales (702,257 ) (24,395 ) (950 ) (36,670 ) (1,315 ) Redemptions and paydowns (601 ) (99,603 ) (5 ) (5,712 ) (586 ) 11,956 Transfers to Level 2 (69,193 ) Balance at September 30, 2014 $ 9,928 $ 525,470 $ — $ 5,714 $ 27 $ 83,885 $ 11,918 $ (67 ) 1 Real Estate Investment Trust
Schedule Of Realized Gains (Losses) Using Level 3 Inputs	(In thousands) Three Months Ended Nine Months Ended 2015 2014 2015 2014 Dividends and other investment income $ (6 ) $ — $ (2 ) $ 34 Fixed income securities gains (losses), net — (13,917 ) (137,641 ) 21,380 Equity securities losses, net (10,637 ) — (11,311 ) —
Schedule Of Assets With Fair Value Changes On Nonrecurring Basis	(In thousands) Fair value at September 30, 2015 Fair value at December 31, 2014 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total ASSETS Private equity investments, carried at cost $ — $ — $ 2,974 $ 2,974 $ — $ — $ 23,454 $ 23,454 Impaired loans — 14,419 — 14,419 — 16,574 — 16,574 Other real estate owned — 2,221 — 2,221 — 8,034 — 8,034 $ — $ 16,640 $ 2,974 $ 19,614 $ — $ 24,608 $ 23,454 $ 48,062 The previous fair values may not be current as of the dates indicated, but rather as of the date the fair value change occurred, such as a charge for impairment. Accordingly, carrying values may not equal current fair value. Gains (losses) from fair value changes (In thousands) Three Months Ended Nine Months Ended 2015 2014 2015 2014 ASSETS HTM securities adjusted for OTTI $ — $ — $ — $ (27 ) Private equity investments, carried at cost (625 ) (339 ) (2,903 ) (471 ) Impaired loans (7,666 ) (807 ) (12,682 ) (12,126 ) Other real estate owned (565 ) (3,088 ) (1,883 ) (6,259 ) $ (8,856 ) $ (4,234 ) $ (17,468 ) $ (18,883 )
Fair Value, by Balance Sheet Grouping [Table Text Block]	September 30, 2015 (In thousands) Gross amounts not offset in the balance sheet Description Gross amounts recognized Gross amounts offset in the balance sheet Net amounts presented in the balance sheet Financial instruments Cash collateral received/pledged Net amount Assets: Federal funds sold and security resell agreements $ 1,325,501 $ — $ 1,325,501 $ — $ — $ 1,325,501 Derivatives (included in other assets) 103,119 — 103,119 (17,207 ) — 85,912 $ 1,428,620 $ — $ 1,428,620 $ (17,207 ) $ — $ 1,411,413 Liabilities: Federal funds and other short-term borrowings $ 272,391 $ — $ 272,391 $ — $ — $ 272,391 Derivatives (included in other liabilities) 86,363 — 86,363 (17,207 ) (37,109 ) 32,047 $ 358,754 $ — $ 358,754 $ (17,207 ) $ (37,109 ) $ 304,438 December 31, 2014 (In thousands) Gross amounts not offset in the balance sheet Description Gross amounts recognized Gross amounts offset in the balance sheet Net amounts presented in the balance sheet Financial instruments Cash collateral received/pledged Net amount Assets: Federal funds sold and security resell agreements $ 1,386,291 $ — $ 1,386,291 $ — $ — $ 1,386,291 Derivatives (included in other assets) 66,420 — 66,420 (3,755 ) 62,665 $ 1,452,711 $ — $ 1,452,711 $ (3,755 ) $ — $ 1,448,956 Liabilities: Federal funds and other short-term borrowings $ 244,223 $ — $ 244,223 $ — $ — $ 244,223 Derivatives (included in other liabilities) 66,064 — 66,064 (3,755 ) (31,968 ) 30,341 $ 310,287 $ — $ 310,287 $ (3,755 ) $ (31,968 ) $ 274,564 September 30, 2015 December 31, 2014 (In thousands) Carrying value Estimated fair value Level Carrying value Estimated fair value Level Financial assets: HTM investment securities $ 544,168 $ 553,088 3 $ 647,252 $ 677,196 3 Loans and leases (including loans held for sale), net of allowance 39,655,805 39,414,672 3 39,591,499 39,426,498 3 Financial liabilities: Time deposits 2,216,206 2,223,094 2 2,406,924 2,408,550 2 Foreign deposits 441,560 441,548 2 328,391 328,447 2 Long-term debt (less fair value hedges) 944,613 975,642 2 1,090,778 1,159,287 2

Commitments, Guarantees, And 31

Commitments, Guarantees, And Contingent Liabilities (Tables)	9 Months Ended
	Sep. 30, 2015
Guarantees, Commitments And Contingencies [Abstract]
Schedule Of Guarantees Issued	(In thousands) September 30, December 31, Net unfunded commitments to extend credit 1 $ 16,969,127 $ 16,658,757 Standby letters of credit: Financial 701,945 745,895 Performance 204,949 183,482 Commercial letters of credit 77,874 32,144 Total unfunded lending commitments $ 17,953,895 $ 17,620,278

Retirement Plans (Tables)

Retirement Plans (Tables)	9 Months Ended
	Sep. 30, 2015
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Schedule Of Net Periodic Benefit Cost (Credit) For Pension And Postretirement Plans	Pension benefits Supplemental retirement benefits Postretirement benefits Pension benefits Supplemental retirement benefits Postretirement benefits (In thousands) Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 2015 2014 2015 2014 2015 2014 2015 2014 Service cost $ — $ — $ — $ — $ 8 $ 8 $ — $ — $ — $ — $ 25 $ 23 Interest cost 1,755 1,869 101 113 10 12 5,320 5,608 302 340 30 35 Expected return on plan assets (3,090 ) (3,326 ) (9,270 ) (9,979 ) Amortization of prior service cost — 13 — — — 38 — — Amortization of net actuarial (gain) loss 1,297 735 31 5 (13 ) (18 ) 4,445 2,206 92 14 (40 ) (53 ) Net periodic benefit cost (credit) $ (38 ) $ (722 ) $ 132 $ 131 $ 5 $ 2 $ 495 $ (2,165 ) $ 394 $ 392 $ 15 $ 5

Operating Segment Information (

Operating Segment Information (Tables)	9 Months Ended
	Sep. 30, 2015
Segment Reporting Information [Line Items]
Operating Segment Information	. OPERATING SEGMENT INFORMATION We manage our operations and prepare management reports and other information with a primary focus on geographical area. As of September 30, 2015 , we operate seven community/regional banks in distinct geographical areas. Performance assessment and resource allocation are based upon this geographical structure. Zions Bank operates 99 branches in Utah, 24 branches in Idaho, and one branch in Wyoming. Amegy operates 77 branches in Texas. CB&T operates 94 branches in California. NBAZ operates 66 branches in Arizona. NSB operates 49 branches in Nevada. Vectra operates 36 branches in Colorado and one branch in New Mexico. TCBW operates one branch in Washington and one branch in Oregon. Effective April 1, 2015, TCBO was merged into TCBW. Note 1 discusses the approval to merge the Company’s seven subsidiary banks into Zions Bank following the close of business on December 31, 2015. This consolidation will affect the presentation of segment reporting, although certain geographical information will continue. The operating segment identified as “Other” includes the Parent, Zions Management Services Company (“ZMSC”), certain nonbank financial service subsidiaries, and eliminations of transactions between segments. The Parent’s operations are significant to the Other segment. Net interest income is substantially affected by the Parent’s interest on long-term debt. ZMSC provides internal technology and operational services to affiliated operating businesses of the Company. ZMSC charges most of its costs to the affiliates on an approximate break-even basis. The accounting policies of the individual operating segments are the same as those of the Company. Transactions between operating segments are primarily conducted at fair value, resulting in profits that are eliminated for reporting consolidated results of operations. Operating segments pay for centrally provided services based upon estimated or actual usage of those services. The following schedule presents selected operating segment information for the three months ended September 30, 2015 and 2014 : (In millions) Zions Bank Amegy CB&T NBAZ NSB 2015 2014 2015 2014 2015 2014 2015 2014 2015 2014 CONDENSED INCOME STATEMENT Net interest income $ 145.9 $ 146.7 $ 99.9 $ 95.8 $ 95.0 $ 98.9 $ 40.4 $ 40.3 $ 27.6 $ 28.4 Provision for loan losses (5.7 ) (27.7 ) 31.8 (3.5 ) 1.1 (10.1 ) (2.4 ) (4.5 ) (3.7 ) (4.9 ) Net interest income after provision for loan losses 151.6 174.4 68.1 99.3 93.9 109.0 42.8 44.8 31.3 33.3 Noninterest income 50.4 44.8 33.4 39.4 18.6 17.5 9.9 9.6 9.4 9.6 Noninterest expense 128.8 123.4 90.2 79.1 70.6 77.1 35.8 33.2 32.3 31.8 Income before income taxes 73.2 95.8 11.3 59.6 41.9 49.4 16.9 21.2 8.4 11.1 Income taxes (benefit) 26.4 35.4 3.5 20.4 16.4 19.1 2.6 7.9 2.8 3.7 Net income (loss) 46.8 60.4 7.8 39.2 25.5 30.3 14.3 13.3 5.6 7.4 Net income (loss) applicable to noncontrolling interests 0.6 — — — — — — — — — Net income (loss) applicable to controlling interest $ 46.2 $ 60.4 $ 7.8 $ 39.2 $ 25.5 $ 30.3 $ 14.3 $ 13.3 $ 5.6 $ 7.4 AVERAGE BALANCE SHEET DATA Total assets $ 18,437 $ 18,083 $ 13,901 $ 13,861 $ 11,846 $ 11,252 $ 5,018 $ 4,710 $ 4,354 $ 4,074 Cash and due from banks 241 322 101 172 88 134 43 70 70 94 Money market investments 2,064 3,083 2,230 2,555 1,944 1,577 441 401 961 741 Total securities 3,211 1,814 319 266 538 258 535 380 864 799 Total loans 12,200 12,312 10,078 9,721 8,532 8,520 3,799 3,660 2,321 2,318 Total deposits 15,944 15,827 11,411 11,382 10,181 9,592 4,360 4,081 3,951 3,670 Shareholder’s equity: Preferred equity 280 280 226 226 162 162 85 85 50 50 Common equity 1,689 1,578 1,967 1,903 1,415 1,386 500 465 326 330 Noncontrolling interests 17 — — — — — — — — — Total shareholder’s equity 1,986 1,858 2,193 2,129 1,577 1,548 585 550 376 380 Vectra TCBW Other Consolidated Company 2015 2014 2015 2014 2015 2014 2015 2014 CONDENSED INCOME STATEMENT Net interest income $ 25.5 $ 25.4 $ 7.5 $ 8.3 $ (16.4 ) $ (27.1 ) $ 425.4 $ 416.7 Provision for loan losses (1.6 ) (3.2 ) (1.2 ) (0.7 ) — (0.1 ) 18.3 (54.7 ) Net interest income after provision for loan losses 27.1 28.6 8.7 9.0 (16.4 ) (27.0 ) 407.1 471.4 Noninterest income 5.8 6.0 1.1 1.1 2.2 (12.0 ) 130.8 116.0 Noninterest expense 24.7 24.2 5.3 5.7 8.4 64.0 396.1 438.5 Income (loss) before income taxes 8.2 10.4 4.5 4.4 (22.6 ) (103.0 ) 141.8 148.9 Income taxes (benefit) 2.7 3.6 1.5 1.5 (15.1 ) (38.5 ) 40.8 53.1 Net income (loss) 5.5 6.8 3.0 2.9 (7.5 ) (64.5 ) 101.0 95.8 Net income (loss) applicable to noncontrolling interests — — — — (0.6 ) — — — Net income (loss) applicable to controlling interest $ 5.5 $ 6.8 $ 3.0 $ 2.9 $ (6.9 ) $ (64.5 ) $ 101.0 $ 95.8 AVERAGE BALANCE SHEET DATA Total assets $ 3,246 $ 2,751 $ 1,058 $ 977 $ 546 $ 420 $ 58,406 $ 56,128 Cash and due from banks 26 41 29 34 (14 ) (9 ) 584 858 Money market investments 514 174 227 140 395 (178 ) 8,776 8,493 Total securities 247 152 86 78 56 300 5,856 4,047 Total loans 2,397 2,319 702 712 (4 ) 5 40,025 39,567 Total deposits 2,834 2,339 906 827 (668 ) (1,427 ) 48,919 46,291 Shareholder’s equity: Preferred equity 25 26 3 3 173 172 1,004 1,004 Common equity 324 307 111 107 324 145 6,656 6,221 Noncontrolling interests — — — — (17 ) — — — Total shareholder’s equity 349 333 114 110 480 317 7,660 7,225 The following schedule presents selected operating segment information for the nine months ended September 30, 2015 and 2014 : (In millions) Zions Bank Amegy CB&T NBAZ NSB 2015 2014 2015 2014 2015 2014 2015 2014 2015 2014 CONDENSED INCOME STATEMENT Net interest income $ 431.2 $ 434.8 $ 291.6 $ 285.9 $ 289.4 $ 311.8 $ 119.7 $ 120.9 $ 83.9 $ 84.6 Provision for loan losses (18.7 ) (51.8 ) 56.9 5.9 (6.5 ) (25.1 ) 1.0 (15.5 ) (15.4 ) (13.2 ) Net interest income after provision for loan losses 449.9 486.6 234.7 280.0 295.9 336.9 118.7 136.4 99.3 97.8 Noninterest income 1 90.6 139.0 101.2 107.7 56.5 37.1 29.2 26.2 26.8 23.4 Noninterest expense 385.5 366.0 280.9 258.6 224.4 244.8 109.5 109.4 98.0 97.9 Income before income taxes 155.0 259.6 55.0 129.1 128.0 129.2 38.4 53.2 28.1 23.3 Income taxes (benefit) 54.4 95.4 17.2 43.6 50.0 50.2 10.0 19.7 9.4 7.7 Net income (loss) 100.6 164.2 37.8 85.5 78.0 79.0 28.4 33.5 18.7 15.6 Net income (loss) applicable to noncontrolling interests 2.0 — — — — — — — — — Net income (loss) applicable to controlling interest $ 98.6 $ 164.2 $ 37.8 $ 85.5 $ 78.0 $ 79.0 $ 28.4 $ 33.5 $ 18.7 $ 15.6 AVERAGE BALANCE SHEET DATA Total assets $ 18,628 $ 17,983 $ 13,846 $ 13,650 $ 11,578 $ 11,063 $ 4,929 $ 4,673 $ 4,277 $ 4,046 Cash and due from banks 263 332 127 235 88 152 45 72 72 88 Money market investments 2,664 3,101 2,086 2,498 1,794 1,321 413 368 861 735 Total securities 2,827 1,720 295 256 434 274 466 372 854 789 Total loans 12,184 12,292 10,170 9,550 8,502 8,571 3,803 3,668 2,354 2,314 Total deposits 16,186 15,709 11,362 11,217 9,917 9,421 4,277 4,016 3,870 3,648 Shareholder’s equity: Preferred equity 280 280 226 202 162 162 85 101 50 50 Common equity 1,654 1,556 1,953 1,875 1,405 1,368 492 447 330 324 Noncontrolling interests 13 — — — — — — — — — Total shareholder’s equity 1,947 1,836 2,179 2,077 1,567 1,530 577 548 380 374 Vectra TCBW Other Consolidated 2015 2014 2015 2014 2015 2014 2015 2014 CONDENSED INCOME STATEMENT Net interest income $ 77.6 $ 76.1 $ 22.6 $ 24.0 $ (49.6 ) $ (88.6 ) $ 1,266.4 $ 1,249.5 Provision for loan losses 1.9 (9.5 ) (1.8 ) (0.4 ) (0.1 ) (0.1 ) 17.3 (109.7 ) Net interest income after provision for loan losses 75.7 85.6 24.4 24.4 (49.5 ) (88.5 ) 1,249.1 1,359.2 Noninterest income 1 15.6 15.7 3.3 1.4 (70.1 ) 28.7 253.1 379.2 Noninterest expense 73.0 73.2 11.6 17.1 14.8 75.6 1,197.7 1,242.6 Income (loss) before income taxes 18.3 28.1 16.1 8.7 (134.4 ) (135.4 ) 304.5 495.8 Income taxes (benefit) 5.8 9.7 5.5 3.0 (54.8 ) (50.1 ) 97.5 179.2 Net income (loss) 12.5 18.4 10.6 5.7 (79.6 ) (85.3 ) 207.0 316.6 Net income (loss) applicable to noncontrolling interests — — — — (2.0 ) — — — Net income (loss) applicable to controlling interest $ 12.5 $ 18.4 $ 10.6 $ 5.7 $ (77.6 ) $ (85.3 ) $ 207.0 $ 316.6 AVERAGE BALANCE SHEET DATA Total assets $ 3,154 $ 2,639 $ 1,007 $ 957 $ 154 $ 524 $ 57,573 $ 55,535 Cash and due from banks 28 45 33 28 (17 ) (14 ) 639 938 Money market investments 459 70 166 122 (39 ) (168 ) 8,404 8,047 Total securities 221 158 82 84 120 409 5,299 4,062 Total loans 2,385 2,305 712 710 1 4 40,111 39,414 Total deposits 2,745 2,231 863 809 (1,039 ) (1,205 ) 48,181 45,846 Shareholder’s equity: Preferred equity 25 46 3 3 173 160 1,004 1,004 Common equity 320 279 107 105 258 (98 ) 6,519 5,856 Noncontrolling interests — — — — (13 ) — — — Total shareholder’s equity 345 325 110 108 418 62 7,523 6,860 1 Includes loss on sale of CDOs in the second quarter of 2015 of (in millions) $62.5 (Zions Bank), $0.6 (NSB), $0.6 (Vectra) and $73.1 (Other).
Schedule of Segment Reporting Information, by Segment	(In millions) Zions Bank Amegy CB&T NBAZ NSB 2015 2014 2015 2014 2015 2014 2015 2014 2015 2014 CONDENSED INCOME STATEMENT Net interest income $ 145.9 $ 146.7 $ 99.9 $ 95.8 $ 95.0 $ 98.9 $ 40.4 $ 40.3 $ 27.6 $ 28.4 Provision for loan losses (5.7 ) (27.7 ) 31.8 (3.5 ) 1.1 (10.1 ) (2.4 ) (4.5 ) (3.7 ) (4.9 ) Net interest income after provision for loan losses 151.6 174.4 68.1 99.3 93.9 109.0 42.8 44.8 31.3 33.3 Noninterest income 50.4 44.8 33.4 39.4 18.6 17.5 9.9 9.6 9.4 9.6 Noninterest expense 128.8 123.4 90.2 79.1 70.6 77.1 35.8 33.2 32.3 31.8 Income before income taxes 73.2 95.8 11.3 59.6 41.9 49.4 16.9 21.2 8.4 11.1 Income taxes (benefit) 26.4 35.4 3.5 20.4 16.4 19.1 2.6 7.9 2.8 3.7 Net income (loss) 46.8 60.4 7.8 39.2 25.5 30.3 14.3 13.3 5.6 7.4 Net income (loss) applicable to noncontrolling interests 0.6 — — — — — — — — — Net income (loss) applicable to controlling interest $ 46.2 $ 60.4 $ 7.8 $ 39.2 $ 25.5 $ 30.3 $ 14.3 $ 13.3 $ 5.6 $ 7.4 AVERAGE BALANCE SHEET DATA Total assets $ 18,437 $ 18,083 $ 13,901 $ 13,861 $ 11,846 $ 11,252 $ 5,018 $ 4,710 $ 4,354 $ 4,074 Cash and due from banks 241 322 101 172 88 134 43 70 70 94 Money market investments 2,064 3,083 2,230 2,555 1,944 1,577 441 401 961 741 Total securities 3,211 1,814 319 266 538 258 535 380 864 799 Total loans 12,200 12,312 10,078 9,721 8,532 8,520 3,799 3,660 2,321 2,318 Total deposits 15,944 15,827 11,411 11,382 10,181 9,592 4,360 4,081 3,951 3,670 Shareholder’s equity: Preferred equity 280 280 226 226 162 162 85 85 50 50 Common equity 1,689 1,578 1,967 1,903 1,415 1,386 500 465 326 330 Noncontrolling interests 17 — — — — — — — — — Total shareholder’s equity 1,986 1,858 2,193 2,129 1,577 1,548 585 550 376 380 Vectra TCBW Other Consolidated Company 2015 2014 2015 2014 2015 2014 2015 2014 CONDENSED INCOME STATEMENT Net interest income $ 25.5 $ 25.4 $ 7.5 $ 8.3 $ (16.4 ) $ (27.1 ) $ 425.4 $ 416.7 Provision for loan losses (1.6 ) (3.2 ) (1.2 ) (0.7 ) — (0.1 ) 18.3 (54.7 ) Net interest income after provision for loan losses 27.1 28.6 8.7 9.0 (16.4 ) (27.0 ) 407.1 471.4 Noninterest income 5.8 6.0 1.1 1.1 2.2 (12.0 ) 130.8 116.0 Noninterest expense 24.7 24.2 5.3 5.7 8.4 64.0 396.1 438.5 Income (loss) before income taxes 8.2 10.4 4.5 4.4 (22.6 ) (103.0 ) 141.8 148.9 Income taxes (benefit) 2.7 3.6 1.5 1.5 (15.1 ) (38.5 ) 40.8 53.1 Net income (loss) 5.5 6.8 3.0 2.9 (7.5 ) (64.5 ) 101.0 95.8 Net income (loss) applicable to noncontrolling interests — — — — (0.6 ) — — — Net income (loss) applicable to controlling interest $ 5.5 $ 6.8 $ 3.0 $ 2.9 $ (6.9 ) $ (64.5 ) $ 101.0 $ 95.8 AVERAGE BALANCE SHEET DATA Total assets $ 3,246 $ 2,751 $ 1,058 $ 977 $ 546 $ 420 $ 58,406 $ 56,128 Cash and due from banks 26 41 29 34 (14 ) (9 ) 584 858 Money market investments 514 174 227 140 395 (178 ) 8,776 8,493 Total securities 247 152 86 78 56 300 5,856 4,047 Total loans 2,397 2,319 702 712 (4 ) 5 40,025 39,567 Total deposits 2,834 2,339 906 827 (668 ) (1,427 ) 48,919 46,291 Shareholder’s equity: Preferred equity 25 26 3 3 173 172 1,004 1,004 Common equity 324 307 111 107 324 145 6,656 6,221 Noncontrolling interests — — — — (17 ) — — — Total shareholder’s equity 349 333 114 110 480 317 7,660 7,225 The following schedule presents selected operating segment information for the nine months ended September 30, 2015 and 2014 : (In millions) Zions Bank Amegy CB&T NBAZ NSB 2015 2014 2015 2014 2015 2014 2015 2014 2015 2014 CONDENSED INCOME STATEMENT Net interest income $ 431.2 $ 434.8 $ 291.6 $ 285.9 $ 289.4 $ 311.8 $ 119.7 $ 120.9 $ 83.9 $ 84.6 Provision for loan losses (18.7 ) (51.8 ) 56.9 5.9 (6.5 ) (25.1 ) 1.0 (15.5 ) (15.4 ) (13.2 ) Net interest income after provision for loan losses 449.9 486.6 234.7 280.0 295.9 336.9 118.7 136.4 99.3 97.8 Noninterest income 1 90.6 139.0 101.2 107.7 56.5 37.1 29.2 26.2 26.8 23.4 Noninterest expense 385.5 366.0 280.9 258.6 224.4 244.8 109.5 109.4 98.0 97.9 Income before income taxes 155.0 259.6 55.0 129.1 128.0 129.2 38.4 53.2 28.1 23.3 Income taxes (benefit) 54.4 95.4 17.2 43.6 50.0 50.2 10.0 19.7 9.4 7.7 Net income (loss) 100.6 164.2 37.8 85.5 78.0 79.0 28.4 33.5 18.7 15.6 Net income (loss) applicable to noncontrolling interests 2.0 — — — — — — — — — Net income (loss) applicable to controlling interest $ 98.6 $ 164.2 $ 37.8 $ 85.5 $ 78.0 $ 79.0 $ 28.4 $ 33.5 $ 18.7 $ 15.6 AVERAGE BALANCE SHEET DATA Total assets $ 18,628 $ 17,983 $ 13,846 $ 13,650 $ 11,578 $ 11,063 $ 4,929 $ 4,673 $ 4,277 $ 4,046 Cash and due from banks 263 332 127 235 88 152 45 72 72 88 Money market investments 2,664 3,101 2,086 2,498 1,794 1,321 413 368 861 735 Total securities 2,827 1,720 295 256 434 274 466 372 854 789 Total loans 12,184 12,292 10,170 9,550 8,502 8,571 3,803 3,668 2,354 2,314 Total deposits 16,186 15,709 11,362 11,217 9,917 9,421 4,277 4,016 3,870 3,648 Shareholder’s equity: Preferred equity 280 280 226 202 162 162 85 101 50 50 Common equity 1,654 1,556 1,953 1,875 1,405 1,368 492 447 330 324 Noncontrolling interests 13 — — — — — — — — — Total shareholder’s equity 1,947 1,836 2,179 2,077 1,567 1,530 577 548 380 374 Vectra TCBW Other Consolidated 2015 2014 2015 2014 2015 2014 2015 2014 CONDENSED INCOME STATEMENT Net interest income $ 77.6 $ 76.1 $ 22.6 $ 24.0 $ (49.6 ) $ (88.6 ) $ 1,266.4 $ 1,249.5 Provision for loan losses 1.9 (9.5 ) (1.8 ) (0.4 ) (0.1 ) (0.1 ) 17.3 (109.7 ) Net interest income after provision for loan losses 75.7 85.6 24.4 24.4 (49.5 ) (88.5 ) 1,249.1 1,359.2 Noninterest income 1 15.6 15.7 3.3 1.4 (70.1 ) 28.7 253.1 379.2 Noninterest expense 73.0 73.2 11.6 17.1 14.8 75.6 1,197.7 1,242.6 Income (loss) before income taxes 18.3 28.1 16.1 8.7 (134.4 ) (135.4 ) 304.5 495.8 Income taxes (benefit) 5.8 9.7 5.5 3.0 (54.8 ) (50.1 ) 97.5 179.2 Net income (loss) 12.5 18.4 10.6 5.7 (79.6 ) (85.3 ) 207.0 316.6 Net income (loss) applicable to noncontrolling interests — — — — (2.0 ) — — — Net income (loss) applicable to controlling interest $ 12.5 $ 18.4 $ 10.6 $ 5.7 $ (77.6 ) $ (85.3 ) $ 207.0 $ 316.6 AVERAGE BALANCE SHEET DATA Total assets $ 3,154 $ 2,639 $ 1,007 $ 957 $ 154 $ 524 $ 57,573 $ 55,535 Cash and due from banks 28 45 33 28 (17 ) (14 ) 639 938 Money market investments 459 70 166 122 (39 ) (168 ) 8,404 8,047 Total securities 221 158 82 84 120 409 5,299 4,062 Total loans 2,385 2,305 712 710 1 4 40,111 39,414 Total deposits 2,745 2,231 863 809 (1,039 ) (1,205 ) 48,181 45,846 Shareholder’s equity: Preferred equity 25 46 3 3 173 160 1,004 1,004 Common equity 320 279 107 105 258 (98 ) 6,519 5,856 Noncontrolling interests — — — — (13 ) — — — Total shareholder’s equity 345 325 110 108 418 62 7,523 6,860

Basis of Presentaion (Details)

Basis of Presentaion (Details)	Sep. 30, 2015States
Basis Of Presentation [Abstract]
Number of States in which Entity Operates	11

Supplemental Cash Flow Inform35

Supplemental Cash Flow Information (Schedule Of Noncash Activities) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Other Significant Noncash Transactions [Line Items]
Loans Transfered to Other Real Estate Owned	$ 3,446	$ 8,954	$ 10,098	$ 20,197
Transfer of Portfolio Loans and Leases to Held-for-sale	22,299	9,658	(33,042)	14,739
Subordinated debt converted to preferred stock			104	31
Amortized Cost of Securities Reclassified from HTM to AFS	$ 0	$ 0	$ 79,276	$ 0

Offsetting Assets and Liabili36

Offsetting Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Federal Funds Sold and Securities Borrowed or Purchased under Agreements to Resell [Member] | Assets [Member]
Offsetting Assets [Line Items]
Net amount	$ 1,325,501	$ 1,386,291
Gross amounts recognized	1,325,501	1,386,291
Gross amounts offset in the balance sheet	0	0
Net amounts presented in the balance sheet	1,325,501	1,386,291
Gross amounts not offset in the balance sheet	0	0
Cash Collateral Received/Pledged	0	0
Derivative Financial Instruments, Assets [Member] | Assets [Member]
Offsetting Assets [Line Items]
Net amount	85,912	62,665
Gross amounts recognized	103,119	66,420
Gross amounts offset in the balance sheet	0	0
Net amounts presented in the balance sheet	103,119	66,420
Gross amounts not offset in the balance sheet	(17,207)	$ (3,755)
Cash Collateral Received/Pledged	0
Assets, Total [Member] | Assets [Member]
Offsetting Assets [Line Items]
Net amount	1,411,413	$ 1,448,956
Gross amounts recognized	1,428,620	1,452,711
Gross amounts offset in the balance sheet	0	0
Net amounts presented in the balance sheet	1,428,620	1,452,711
Gross amounts not offset in the balance sheet	(17,207)	(3,755)
Cash Collateral Received/Pledged	0	0
Federal Funds Purchased and Securities Sold under Agreements to Repurchase [Member] | Other Liabilities [Member]
Offsetting Assets [Line Items]
Net amount	272,391	244,223
Gross amounts recognized	272,391	244,223
Gross amounts offset in the balance sheet	0	0
Net amounts presented in the balance sheet	272,391	244,223
Gross amounts not offset in the balance sheet	0	0
Cash Collateral Received/Pledged	0	0
Derivative Financial Instruments, Liabilities [Member] | Other Liabilities [Member]
Offsetting Assets [Line Items]
Net amount	32,047	30,341
Gross amounts recognized	86,363	66,064
Gross amounts offset in the balance sheet	0	0
Net amounts presented in the balance sheet	86,363	66,064
Gross amounts not offset in the balance sheet	(17,207)	(3,755)
Cash Collateral Received/Pledged	(37,109)	(31,968)
Liabilities, Total [Member] | Other Liabilities [Member]
Offsetting Assets [Line Items]
Net amount	304,438	274,564
Gross amounts recognized	358,754	310,287
Gross amounts offset in the balance sheet	0	0
Net amounts presented in the balance sheet	358,754	310,287
Gross amounts not offset in the balance sheet	(17,207)	(3,755)
Cash Collateral Received/Pledged	$ (37,109)	$ (31,968)

Investment Securities (Narrativ

Investment Securities (Narrative) (Details) $ in Thousands	Sep. 30, 2015USD ($)Securitiesyr	Dec. 31, 2014USD ($)Securities	Jun. 30, 2015USD ($)	Sep. 30, 2015USD ($)Securities	Sep. 30, 2014USD ($)	Dec. 31, 2014USD ($)Securities	Mar. 31, 2015USD ($)
Investment [Line Items]
Sale of CDO, Amortized Cost			$ 574,000
Held-to-maturity, Amortized cost	$ 544,168	$ 686,951		$ 544,168		$ 686,951
Private equity investments prohibited by Volker rule	$ 24,000			$ 24,000
Number of HTM investment securities in an unrealized loss position | Securities	146	153		146		153
Number of AFS investment securities in an unrealized loss position | Securities	460	458		460		458
Carrying value of pledged securities	$ 1,900,000	$ 1,400,000		$ 1,900,000		$ 1,400,000
Private Equity Investments	140,000			140,000
Par Value of CDO Securities Sold					$ 1,294,000
Realized Losses on Sales of CDOs			(137,000)
Held To Maturity Securities Gross Unrealized Losses		39,699
Private Equity Investments Sold Prohibited by Volcker Rule			$ 9,000	17,000	$ 22,000	8,000
Commitments for Private Equity and Other Noninterest-bearing Investments	48,000			48,000
Commitments for Private Equity or Other Non-Interest Bearing Investments Prohibited by the Volcker Rule	$ 8,000			8,000
Small Business Administration Loan-Backed Securities [Member] | Minimum [Member]
Investment [Line Items]
Investment term of maturity | yr	5
Small Business Administration Loan-Backed Securities [Member] | Maximum [Member]
Investment [Line Items]
Investment term of maturity | yr	25
Municipal Securities [Member]
Investment [Line Items]
Held-to-maturity, Amortized cost	$ 544,168	607,675		$ 544,168		$ 607,675
Held To Maturity Securities Gross Unrealized Losses		0
Asset-backed Securities [Member] | Trust Preferred Securities - Banks And Insurance [Member]
Investment [Line Items]
Held-to-maturity, Amortized cost							$ 79,276
Held To Maturity Securities Gross Unrealized Losses		$ 39,699

Investment Securities (Summary

Investment Securities (Summary Of Investment Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Mar. 31, 2015
Investment [Line Items]
Held-to-maturity, fair value	$ 553,088	$ 677,196
Held-to-maturity, Amortized cost	544,168	686,951
Held To Maturity Securities Gross Unrealized Gains Losses 1		0
Held To Maturity Securities Gross Unrealized Losses		39,699
Held-to-maturity, Carrying value	544,168	647,252
Available-for-sale Debt Securities, Amortized Cost Basis	5,962,828	3,819,297
Available-For-Sale Debt Securities, Gross Unrealized Gains, Recognized In O C I	35,559	31,603
Available-For-Sale Debt Securities, Gross Unrealized Losses, Recognized In O C I	20,240	142,275
Available-For-Sale Securities, Debt Securities, Net Carrying Amount	5,978,147
Available-for-sale debt securities, Estimated fair value	5,978,147	3,708,625
Available-for-sale Securities, Gross Unrealized Gain	35,650	31,679
Available-for-sale equity securities, Carrying value		3,708,625
Available-for-sale, Amortized cost	5,984,601	3,955,888
Available-for-sale, Gross unrealized losses, Recognized in OCI	20,240	143,319
Carrying value	6,000,011	3,844,248
Available-for-sale securities, Estimated fair value	6,000,011	3,844,248
Held-to-maturity Securities, Unrecognized Holding Gain		31,411
Held-to-maturity Securities, Unrecognized Holding Loss		1,467
amortized cost of investment securities	6,528,769	4,642,839
Gross Unrealized Gains of Investment Securities Recognized in OCI	45,626	31,679
Gross Unrealized Losses of Investment Securities Recognized in OCI	21,296	183,018
Carrying Value of Investment Securities	6,553,099	4,491,500
Estimated Fair Value of Investment Securities		4,521,444
Money Market Mutual Funds and Other [Member]
Investment [Line Items]
Available-for-sale Securities, Gross Unrealized Gain	91
Available-for-sale, Amortized cost	21,773
Available-for-sale, Gross unrealized losses, Recognized in OCI	0
Carrying value	21,864
Municipal Securities [Member]
Investment [Line Items]
Held-to-maturity, fair value		619,889
Held-to-maturity, Amortized cost	544,168	607,675
Held To Maturity Securities Gross Unrealized Gains Losses 1		0
Held To Maturity Securities Gross Unrealized Losses		0
Held-to-maturity, Carrying value	553,088	607,675
Available-for-sale Debt Securities, Amortized Cost Basis	212,698	189,059
Available-For-Sale Debt Securities, Gross Unrealized Gains, Recognized In O C I	1,059	1,143
Available-For-Sale Debt Securities, Gross Unrealized Losses, Recognized In O C I	359	945
Available-For-Sale Securities, Debt Securities, Net Carrying Amount	213,398	189,257
Available-for-sale debt securities, Estimated fair value		189,257
Held-to-maturity Securities, Unrecognized Holding Gain	9,976	13,018
Held-to-maturity Securities, Unrecognized Holding Loss	1,056	804
Available-for-sale Securities [Member]
Investment [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	25,485
Available-For-Sale Debt Securities, Gross Unrealized Gains, Recognized In O C I	187
Available-For-Sale Debt Securities, Gross Unrealized Losses, Recognized In O C I	2,905
Available-For-Sale Securities, Debt Securities, Net Carrying Amount	22,767
Trust Preferred Securities - Banks And Insurance [Member] | Asset-backed Securities [Member]
Investment [Line Items]
Held-to-maturity, fair value		57,307
Held-to-maturity, Amortized cost			$ 79,276
Held To Maturity Securities Gross Unrealized Gains Losses 1		0
Held To Maturity Securities Gross Unrealized Losses		39,699
Held-to-maturity, Carrying value		39,577
Available-For-Sale Debt Securities, Gross Unrealized Gains, Recognized In O C I		103
Available-For-Sale Debt Securities, Gross Unrealized Losses, Recognized In O C I		121,984
Available-for-sale equity securities, Carrying value		415,708
Available-for-sale, Amortized cost		537,589
Available-for-sale securities, Estimated fair value		415,708
Held-to-maturity Securities, Unrecognized Holding Gain		18,393
Held-to-maturity Securities, Unrecognized Holding Loss		663
Agency Securities [Member]
Investment [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	1,102,978	607,523
Available-For-Sale Debt Securities, Gross Unrealized Gains, Recognized In O C I	7,147	1,572
Available-For-Sale Debt Securities, Gross Unrealized Losses, Recognized In O C I	578	8,343
Available-For-Sale Securities, Debt Securities, Net Carrying Amount	1,109,547	600,752
Available-for-sale debt securities, Estimated fair value		600,752
Agency Guaranteed Mortgage-Backed Securities [Member]
Investment [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	2,805,901	935,164
Available-For-Sale Debt Securities, Gross Unrealized Gains, Recognized In O C I	12,989	12,132
Available-For-Sale Debt Securities, Gross Unrealized Losses, Recognized In O C I	5,619	2,105
Available-For-Sale Securities, Debt Securities, Net Carrying Amount	2,813,271	945,191
Available-for-sale debt securities, Estimated fair value		945,191
Small Business Administration Loan-Backed Securities [Member]
Investment [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	1,815,766	1,544,710
Available-For-Sale Debt Securities, Gross Unrealized Gains, Recognized In O C I	14,177	16,446
Available-For-Sale Debt Securities, Gross Unrealized Losses, Recognized In O C I	10,779	8,891
Available-For-Sale Securities, Debt Securities, Net Carrying Amount	$ 1,819,164	1,552,265
Available-for-sale debt securities, Estimated fair value		1,552,265
Auction Rate Securities [Member] | Asset-backed Securities [Member]
Investment [Line Items]
Available-For-Sale Debt Securities, Gross Unrealized Gains, Recognized In O C I		207
Available-For-Sale Debt Securities, Gross Unrealized Losses, Recognized In O C I		7
Available-for-sale equity securities, Carrying value		5,452
Available-for-sale, Amortized cost		5,252
Available-for-sale securities, Estimated fair value		5,452
Mutual Funds And Other [Member]
Investment [Line Items]
Available-for-sale Securities, Gross Unrealized Gain		76
Available-for-sale, Amortized cost		136,591
Available-for-sale, Gross unrealized losses, Recognized in OCI		1,044
Carrying value		135,623
Available-for-sale securities, Estimated fair value		$ 135,623

Investment Securities (Contract

Investment Securities (Contractual Maturities Debt Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Investments [Abstract]
Held-to-maturity Securities, Debt Maturities, Next Rolling Twelve Months, Amortized Cost	$ 88,169
Held-to-maturity, Due in one year or less, Estimated fair value	88,714
Held-to-maturity, Due after one year through five years, Amortized cost	168,734
Held-to-maturity, Due after one year through five years, Estimated fair value	171,164
Held-to-maturity, Due after five years through ten years, Amortized cost	152,942
Held-to-maturity, Due after five years through ten years, Estimated fair value	158,331
Held-to-maturity Securities, Debt Maturities, Rolling after Ten Years, Amortized Cost	134,323
Held-to-maturity, Due after ten years, Estimated fair value	134,879
Held-to-maturity, Amortized cost	544,168	$ 686,951
Held-to-maturity, fair value	553,088
Available-for-sale, Due in one year or less, Amortized cost	822,647
Available-for-sale, Due in one year or less, Estimated fair value	824,744
Available-for-sale, Due after one year through five years, Amortized cost	2,314,091
Available-for-sale, Due after one year through five years, Estimated fair value	2,319,836
Available-for-sale, Due after five years through ten years, Amortized cost	1,857,898
Available-for-sale, Due after five years through ten years, Estimated fair value	1,862,624
Available-for-sale, Due after ten years, Amortized cost	968,192
Available-for-sale, Due after ten years, Estimated fair value	970,943
Available-for-sale, Amortized cost	5,962,828	3,819,297
Available-for-sale, Estimated fair value	$ 5,978,147	$ 3,708,625

Investment Securities (Summar40

Investment Securities (Summary Of Amount Of Gross Unrealized Losses For Debt Securities And Estimated Fair Value) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Investment [Line Items]
Available-for-sale, Less than 12 months - Gross unrealized losses		$ 13,602
Available-for-sale, Less than 12 months - Estimated fair value		1,326,690
Available-for-sale, 12 months or more - Gross unrealized losses		129,717
Available-for-sale, 12 months or more - Estimated fair value		699,056
Available-for-sale, Total - Gross unrealized losses		143,319
Available-for-sale, Total - Estimated fair value		2,025,746
Investment Securities Gross Unrealized Losses Less Than 12 Months	$ 11,182	14,182
Investment Securities Estimated Fair Value Less Than 12 Months	1,909,125	1,389,574
Investment Securities Gross Unrealized Losses 12 Months or More	10,114	170,303
Investment Securities Estimated Fair Value 12 Months or More	633,493	770,245
Investment Securities Gross Unrealized Losses Total	21,296	184,485
Investment Securities Estimated Fair Value Total	2,542,618	2,159,819
Municipal Securities [Member]
Investment [Line Items]
Held-to-maturity, Less than 12 months - Gross unrealized losses	901	527
Held-to-maturity, Less than 12 months - Estimated fair value	55,763	62,762
Held-to-maturity, 12 months or more - Gross unrealized losses	155	277
Held-to-maturity, 12 months or more - Estimated fair value	11,681	14,003
Held-to-maturity, Total - Gross unrealized losses	1,056	804
Held-to-maturity, Total - Estimated fair value	67,444	76,765
Available-for-sale, Less than 12 months - Gross unrealized losses	305	258
Available-for-sale, Less than 12 months - Estimated fair value	34,703	36,551
Available-for-sale, 12 months or more - Gross unrealized losses	54	687
Available-for-sale, 12 months or more - Estimated fair value	4,125	4,616
Available-for-sale, Total - Gross unrealized losses	359	945
Available-for-sale, Total - Estimated fair value	38,828	41,167
Available-for-sale Securities [Member]
Investment [Line Items]
Available-for-sale, Less than 12 months - Gross unrealized losses	0
Available-for-sale, Less than 12 months - Estimated fair value	0
Agency Securities [Member]
Investment [Line Items]
Available-for-sale, Less than 12 months - Gross unrealized losses	65	4,510
Available-for-sale, Less than 12 months - Estimated fair value	34,737	295,694
Available-for-sale, 12 months or more - Gross unrealized losses	513	3,833
Available-for-sale, 12 months or more - Estimated fair value	137,964	101,188
Available-for-sale, Total - Gross unrealized losses	578	8,343
Available-for-sale, Total - Estimated fair value	172,701	396,882
Agency Guaranteed Mortgage-Backed Securities [Member]
Investment [Line Items]
Available-for-sale, Less than 12 months - Gross unrealized losses	5,361	1,914
Available-for-sale, Less than 12 months - Estimated fair value	1,330,271	425,114
Available-for-sale, 12 months or more - Gross unrealized losses	258	191
Available-for-sale, 12 months or more - Estimated fair value	15,351	12,124
Available-for-sale, Total - Gross unrealized losses	5,619	2,105
Available-for-sale, Total - Estimated fair value	1,345,622	437,238
Small Business Administration Loan-Backed Securities [Member]
Investment [Line Items]
Available-for-sale, Less than 12 months - Gross unrealized losses	4,550	5,869
Available-for-sale, Less than 12 months - Estimated fair value	453,651	495,817
Available-for-sale, 12 months or more - Gross unrealized losses	6,229	3,022
Available-for-sale, 12 months or more - Estimated fair value	452,275	175,523
Available-for-sale, Total - Gross unrealized losses	10,779	8,891
Available-for-sale, Total - Estimated fair value	905,926	671,340
Mutual Funds And Other [Member]
Investment [Line Items]
Available-for-sale, Less than 12 months - Gross unrealized losses		1,044
Available-for-sale, Less than 12 months - Estimated fair value		71,907
Available-for-sale, 12 months or more - Gross unrealized losses		0
Available-for-sale, 12 months or more - Estimated fair value		0
Available-for-sale, Total - Gross unrealized losses		1,044
Available-for-sale, Total - Estimated fair value		71,907
Held-to-maturity Securities [Member]
Investment [Line Items]
Held-to-maturity, Less than 12 months - Gross unrealized losses		580
Held-to-maturity, Less than 12 months - Estimated fair value		62,884
Held-to-maturity, 12 months or more - Gross unrealized losses		40,586
Held-to-maturity, 12 months or more - Estimated fair value		71,189
Held-to-maturity, Total - Gross unrealized losses		41,166
Held-to-maturity, Total - Estimated fair value		134,073
Available-for-sale Securities [Member]
Investment [Line Items]
Available-for-sale, Less than 12 months - Gross unrealized losses	10,281	12,558
Available-for-sale, Less than 12 months - Estimated fair value	1,853,362	1,254,783
Available-for-sale, 12 months or more - Gross unrealized losses	9,959	129,717
Available-for-sale, 12 months or more - Estimated fair value	621,812	699,056
Available-for-sale, Total - Gross unrealized losses	20,240	142,275
Available-for-sale, Total - Estimated fair value	2,475,174	1,953,839
Available-for-sale Securities [Member] | Municipal Securities [Member]
Investment [Line Items]
Available-for-sale, 12 months or more - Gross unrealized losses	2,905
Available-for-sale, 12 months or more - Estimated fair value	12,097
Available-for-sale, Total - Gross unrealized losses	2,905
Available-for-sale, Total - Estimated fair value	$ 12,097
Asset-backed Securities [Member] | Trust Preferred Securities - Banks And Insurance [Member]
Investment [Line Items]
Held-to-maturity, Less than 12 months - Gross unrealized losses		53
Held-to-maturity, Less than 12 months - Estimated fair value		122
Held-to-maturity, 12 months or more - Gross unrealized losses		40,309
Held-to-maturity, 12 months or more - Estimated fair value		57,186
Held-to-maturity, Total - Gross unrealized losses		40,362
Held-to-maturity, Total - Estimated fair value		57,308
Available-for-sale, Less than 12 months - Gross unrealized losses		0
Available-for-sale, Less than 12 months - Estimated fair value		0
Available-for-sale, 12 months or more - Gross unrealized losses		121,984
Available-for-sale, 12 months or more - Estimated fair value		405,605
Available-for-sale, Total - Gross unrealized losses		121,984
Available-for-sale, Total - Estimated fair value		405,605
Asset-backed Securities [Member] | Auction Rate Securities [Member]
Investment [Line Items]
Available-for-sale, Less than 12 months - Gross unrealized losses		7
Available-for-sale, Less than 12 months - Estimated fair value		1,607
Available-for-sale, 12 months or more - Gross unrealized losses		0
Available-for-sale, 12 months or more - Estimated fair value		0
Available-for-sale, Total - Gross unrealized losses		7
Available-for-sale, Total - Estimated fair value		$ 1,607

Investment Securities (Rollforw

Investment Securities (Rollforward Of Total Amount Of Credit-Related OTTI) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Investment [Line Items]
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses		$ 0		$ (27)
Balance of credit-related OTTI at beginning of period	$ 0	(172,993)	$ 104,551	185,885
Reductions for securities sold during the period	0	44,929	104,551	57,848
Balance of credit-related OTTI at end of period	0	(128,064)	0	(128,064)
Transfer of Securities from HTM to AFS	0		0
Held-to-maturity Securities [Member]
Investment [Line Items]
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses		0		(27)
Balance of credit-related OTTI at beginning of period	0	(9,079)	9,079	9,052
Reductions for securities sold during the period	0	0	0	0
Balance of credit-related OTTI at end of period	0	(9,079)	0	(9,079)
Transfer of Securities from HTM to AFS	0		9,079
Available-for-sale Securities [Member]
Investment [Line Items]
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses		0		0
Balance of credit-related OTTI at beginning of period	0	(163,914)	95,472	176,833
Reductions for securities sold during the period	0	44,929	104,551	57,848
Balance of credit-related OTTI at end of period	0	$ (118,985)	0	$ (118,985)
Transfer of Securities from HTM to AFS	$ 0		$ (9,079)

Investment Securities (Gains An

Investment Securities (Gains And Losses, Including OTTI, Recognized In Statement Of Income) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Investments [Abstract]
Investment securities, Held-to-maturity, Gross gains	$ 0	$ 2	$ 1	$ 2
Other than Temporary Impairment Losses, Investments, Held-to-maturity Securities	0	0	0	27
Investment securities, Available-for-sale, Gross gains	6	5,873	8,366	83,466
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities	59	20,063	147,572	62,948
Other noninterest-bearing investments, Nonmarketable equity securities, Gross gains	14,267	5,911	23,870	10,568
Other noninterest-bearing investments, Nonmarketable equity securities, Gross losses	10,637	5,184	11,571	5,184
Total investment securities and other noninterest-bearing investments, Gross gains	14,273	11,786	32,237	94,036
Total investment securities and other noninterest-bearing investments, Gross losses	10,696	25,247	159,143	68,159
Net losses	3,577	(13,461)	(126,906)	25,877
Net impairment losses on investment securities	0	0	0	(27)
Equity securities gains (losses)	3,630	440	11,822	3,865
Fixed income securities gains (losses), net	$ (53)	$ (13,901)	$ (138,728)	$ 22,039

Investment Securities Taxable a

Investment Securities Taxable and Nontaxable Interest Income by Investment Type (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Noninterest Income	$ 30,231	$ 24,377	$ 86,513	$ 76,973
Taxable [Member]
Noninterest Income	26,903	20,895	76,201	66,696
Nontaxable [Member]
Noninterest Income	3,328	3,482	10,312	10,277
Held-to-maturity Securities [Member]
Noninterest Income	5,660	6,402	17,981	19,594
Held-to-maturity Securities [Member] | Taxable [Member]
Noninterest Income	3,031	3,597	9,716	11,146
Held-to-maturity Securities [Member] | Nontaxable [Member]
Noninterest Income	2,629	2,805	8,265	8,448
Available-for-sale Securities [Member]
Noninterest Income	24,126	17,572	66,879	55,928
Available-for-sale Securities [Member] | Taxable [Member]
Noninterest Income	23,427	16,895	64,832	54,099
Available-for-sale Securities [Member] | Nontaxable [Member]
Noninterest Income	699	677	2,047	1,829
Trading Securities [Member]
Noninterest Income	445	403	1,653	1,451
Trading Securities [Member] | Taxable [Member]
Noninterest Income	445	403	1,653	1,451
Trading Securities [Member] | Nontaxable [Member]
Noninterest Income	$ 0	$ 0	$ 0	$ 0

Loans And Allowance For Credi44

Loans And Allowance For Credit Losses (Narrative) (Details)		3 Months Ended		9 Months Ended		12 Months Ended
		Sep. 30, 2015USD ($)	Sep. 30, 2014USD ($)	Sep. 30, 2015USD ($)moBilling_CyclesdPayments	Sep. 30, 2014USD ($)	Sep. 30, 2015USD ($)	Sep. 30, 2014USD ($)	Dec. 31, 2014USD ($)
Loans And Allowance For Credit Losses [Line Items]
Unfunded Lending Commitments on Troubled Debt Restructuring		$ 3,600,000		$ 3,600,000		$ 3,600,000		$ 6,100,000
Loans and Leases Receivable, Gross		40,113,123,000		40,113,123,000		40,113,123,000		40,063,658,000
Financing Receivable, Recorded Investment, Current		39,794,516,000		39,794,516,000		39,794,516,000		39,796,072,000
Certain Loans Account for as Cash Basis, Net Carrying Amounts								5,300,000
Threshold for Internal risk grades assigned to commercial and commercial real estate loans		750,000		750,000		750,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses		800,000	$ 0	300,000	$ (2,500,000)
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		604,000	2,265,000	2,475,000	2,466,000	93,400,000	$ 97,300,000
Unearned income and fees, net of related costs		144,100,000		144,100,000		144,100,000		144,700,000
Owner occupied and commercial real estate loans, unamortized premiums		28,800,000		28,800,000		28,800,000		36,500,000
Land Development Loans		383,100,000		383,100,000		383,100,000		484,900,000
Loans at carrying value pledged as collateral for current and potential borrowings		22,300,000,000		22,300,000,000		22,300,000,000		22,500,000,000
Payments for Origination and Purchases of Loans Held-for-sale		442,400,000	297,800,000	1,111,000,000	894,900,000
Loans and Leases Receivable, Gain (Loss) on Sales, Net		5,000,000	4,200,000	13,900,000	11,300,000
Principle amount of loans held for sale sold		434,100,000	341,300,000	1,070,200,000	939,000,000
Servicing Retained for Loans Sold		1,200,000,000		1,200,000,000		1,200,000,000
Servicing Asset at Amortized Cost		0		$ 0		0		0
Number of days for consumer loans to be charged off | d				180
Number of days for closed-end loans to be charged off | d				120
Minimum number of days past due for nonaccrual status | d				90
Minimum number of monthly payments in arrears when reporting past due | Payments				2
Minimum number of billing cycles in arrears when reported as past due | Billing_Cycles				2
Minimum number of days unpaid when reported as past due | d				30
Threshold for nonaccrual loans for evaluation of impairment				$ 1,000,000
Minimum number of months for borrower to meet terms For TDR status | mo				6
Recorded investment in TDR loans modified with interest rates below market		190,700,000		$ 190,700,000		190,700,000		219,300,000
Total reversal amount to ALLL		600,000	800,000	3,100,000	4,400,000
Additional interest income due to increased cash flows from acquired loans		5,400,000	7,700,000	22,100,000	37,900,000
Provision for Loan and Lease Losses		18,262,000	(54,643,000)	17,334,000	(109,669,000)
Provision for Unfunded Lending Commitments		(1,428,000)	16,095,000	(313,000)	10,328,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets		1,600,000		1,600,000		1,600,000
Other Real Estate, In Process of Forecloseing Assets		9,300,000		9,300,000		9,300,000
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		166,927,000		166,927,000		166,927,000		104,491,000
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		151,680,000		151,680,000		151,680,000		163,095,000
Financing Receivable, Recorded Investment, Past Due		318,607,000		318,607,000		318,607,000		267,586,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		34,857,000		34,857,000		34,857,000		29,228,000
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	193,883,000		193,883,000		193,883,000		154,778,000
Commercial [Member]
Loans And Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross		21,203,650,000		$ 21,203,650,000		21,203,650,000		21,444,364,000
Subsequent payment default period, number of days | d				90
Provision for Loan and Lease Losses		22,417,000	(19,960,000)	$ 53,292,000	(38,274,000)
Provision for Unfunded Lending Commitments		(2,808,000)	(1,651,000)	(4,651,000)	(6,107,000)
Consumer Portfolio Segment [Member]
Loans And Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross		8,606,750,000		$ 8,606,750,000		8,606,750,000		8,506,286,000
Subsequent payment default period, number of days | d				60
Provision for Loan and Lease Losses		2,466,000	(496,000)	$ 2,533,000	(14,045,000)
Provision for Unfunded Lending Commitments		(87,000)	3,356,000	(7,000)	3,249,000
Financing Receivable, Recorded Investment, Nonaccrual Status		272,000		272,000		272,000		254,000
Consumer Loan [Member]
Loans And Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross		8,606,750,000		8,606,750,000		8,606,750,000		8,506,286,000
Financing Receivable, Recorded Investment, Current		8,549,111,000		8,549,111,000		8,549,111,000		8,442,742,000
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		22,853,000		22,853,000		22,853,000		29,663,000
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		34,786,000		34,786,000		34,786,000		33,881,000
Financing Receivable, Recorded Investment, Past Due		57,639,000		57,639,000		57,639,000		63,544,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		1,664,000		1,664,000		1,664,000		1,425,000
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	21,892,000		21,892,000		21,892,000		23,150,000
Consumer Portfolio Segment [Member]
Loans And Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross		192,985,000		192,985,000		192,985,000		212,360,000
Financing Receivable, Recorded Investment, Current		192,042,000		192,042,000		192,042,000		211,560,000
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		877,000		877,000		877,000		644,000
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		66,000		66,000		66,000		156,000
Financing Receivable, Recorded Investment, Past Due		943,000		943,000		943,000		800,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		0		0		0		0
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	46,000		46,000		46,000		84,000
Commercial and Industrial Sector [Member]
Loans And Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross		13,035,251,000		13,035,251,000		13,035,251,000		13,162,955,000
Financing Receivable, Recorded Investment, Current		12,909,622,000		12,909,622,000		12,909,622,000		13,092,731,000
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		79,246,000		79,246,000		79,246,000		28,295,000
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		46,383,000		46,383,000		46,383,000		41,929,000
Financing Receivable, Recorded Investment, Past Due		125,629,000		125,629,000		125,629,000		70,224,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		4,951,000		4,951,000		4,951,000		4,677,000
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	90,584,000		90,584,000		90,584,000		64,385,000
Finance Leases Portfolio Segment [Member]
Loans And Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross		426,781,000		426,781,000		426,781,000		408,974,000
Financing Receivable, Recorded Investment, Current		423,071,000		423,071,000		423,071,000		408,724,000
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		3,557,000		3,557,000		3,557,000		225,000
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		153,000		153,000		153,000		25,000
Financing Receivable, Recorded Investment, Past Due		3,710,000		3,710,000		3,710,000		250,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		0		0		0		0
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	55,000		55,000		55,000		270,000
Owner Occupied [Member]
Loans And Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross		7,141,360,000		7,141,360,000		7,141,360,000		7,351,548,000
Financing Receivable, Recorded Investment, Current		7,077,386,000		7,077,386,000		7,077,386,000		7,275,842,000
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		33,198,000		33,198,000		33,198,000		29,182,000
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		30,776,000		30,776,000		30,776,000		46,524,000
Financing Receivable, Recorded Investment, Past Due		63,974,000		63,974,000		63,974,000		75,706,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		5,443,000		5,443,000		5,443,000		3,334,000
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	46,283,000		46,283,000		46,283,000		39,649,000
Municipal [Member]
Loans And Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross		600,258,000		600,258,000		600,258,000		520,887,000
Financing Receivable, Recorded Investment, Current		600,210,000		600,210,000		600,210,000		520,887,000
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		48,000		48,000		48,000		0
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		0		0		0		0
Financing Receivable, Recorded Investment, Past Due		48,000		48,000		48,000		0
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		0		0		0		0
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	967,000		967,000		967,000		1,056,000
Commercial Loan [Member]
Loans And Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross		21,203,650,000		21,203,650,000		21,203,650,000		21,444,364,000
Financing Receivable, Recorded Investment, Current		21,010,289,000		21,010,289,000		21,010,289,000		21,298,184,000
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		116,049,000		116,049,000		116,049,000		57,702,000
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		77,312,000		77,312,000		77,312,000		88,478,000
Financing Receivable, Recorded Investment, Past Due		193,361,000		193,361,000		193,361,000		146,180,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		10,394,000		10,394,000		10,394,000		8,011,000
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	137,889,000		137,889,000		137,889,000		105,360,000
Commercial Real Estate [Member]
Loans And Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross		2,213,465,000		2,213,465,000		2,213,465,000		1,986,408,000
Financing Receivable, Recorded Investment, Current		2,195,193,000		2,195,193,000		2,195,193,000		1,972,206,000
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		12,447,000		12,447,000		12,447,000		2,711,000
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		5,825,000		5,825,000		5,825,000		11,491,000
Financing Receivable, Recorded Investment, Past Due		18,272,000		18,272,000		18,272,000		14,202,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		2,296,000		2,296,000		2,296,000		92,000
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	10,914,000		10,914,000		10,914,000		12,481,000
Term [Member]
Loans And Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross		8,089,258,000		8,089,258,000		8,089,258,000		8,126,600,000
Financing Receivable, Recorded Investment, Current		8,039,923,000		8,039,923,000		8,039,923,000		8,082,940,000
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		15,578,000		15,578,000		15,578,000		14,415,000
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		33,757,000		33,757,000		33,757,000		29,245,000
Financing Receivable, Recorded Investment, Past Due		49,335,000		49,335,000		49,335,000		43,660,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		20,503,000		20,503,000		20,503,000		19,700,000
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	23,188,000		23,188,000		23,188,000		13,787,000
Commercial Real Estate [Member]
Loans And Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross		10,302,723,000		10,302,723,000		10,302,723,000		10,113,008,000
Financing Receivable, Recorded Investment, Current		10,235,116,000		10,235,116,000		10,235,116,000		10,055,146,000
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		28,025,000		28,025,000		28,025,000		17,126,000
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		39,582,000		39,582,000		39,582,000		40,736,000
Financing Receivable, Recorded Investment, Past Due		67,607,000		67,607,000		67,607,000		57,862,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		22,799,000		22,799,000		22,799,000		19,792,000
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	34,102,000		34,102,000		34,102,000		26,268,000
Home Equity Line of Credit [Member]
Loans And Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross		2,347,061,000		2,347,061,000		2,347,061,000		2,321,150,000
Financing Receivable, Recorded Investment, Current		2,336,740,000		2,336,740,000		2,336,740,000		2,309,967,000
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		4,694,000		4,694,000		4,694,000		4,503,000
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		5,627,000		5,627,000		5,627,000		6,680,000
Financing Receivable, Recorded Investment, Past Due		10,321,000		10,321,000		10,321,000		11,183,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		0		0		0		1,000
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	2,592,000		2,592,000		2,592,000		1,779,000
One Through Four Family Residential [Member]
Loans And Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross		5,268,840,000		5,268,840,000		5,268,840,000		5,200,882,000
Financing Receivable, Recorded Investment, Current		5,231,005,000		5,231,005,000		5,231,005,000		5,163,610,000
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		10,137,000		10,137,000		10,137,000		12,416,000
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		27,698,000		27,698,000		27,698,000		24,856,000
Financing Receivable, Recorded Investment, Past Due		37,835,000		37,835,000		37,835,000		37,272,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		877,000		877,000		877,000		318,000
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	18,739,000		18,739,000		18,739,000		20,599,000
Construction And Other Consumer Real Estate [Member]
Loans And Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross		370,015,000		370,015,000		370,015,000		370,542,000
Financing Receivable, Recorded Investment, Current		364,283,000		364,283,000		364,283,000		359,723,000
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		5,524,000		5,524,000		5,524,000		9,675,000
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		208,000		208,000		208,000		1,144,000
Financing Receivable, Recorded Investment, Past Due		5,732,000		5,732,000		5,732,000		10,819,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		0		0		0		160,000
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	401,000		401,000		401,000		608,000
Revolving Credit Facility [Member]
Loans And Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross		427,849,000		427,849,000		427,849,000		401,352,000
Financing Receivable, Recorded Investment, Current		425,041,000		425,041,000		425,041,000		397,882,000
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		1,621,000		1,621,000		1,621,000		2,425,000
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		1,187,000		1,187,000		1,187,000		1,045,000
Financing Receivable, Recorded Investment, Past Due		2,808,000		2,808,000		2,808,000		3,470,000
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		787,000		787,000		787,000		946,000
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	114,000		114,000		114,000		80,000
Accruing [Member]
Loans And Allowance For Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment		178,136,000		178,136,000		178,136,000		245,550,000
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	96,000	0	96,000
Nonaccruing [Member]
Loans And Allowance For Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment		286,523,000		286,523,000		286,523,000		343,329,000
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		604,000	$ 2,169,000	2,475,000	$ 2,370,000
Nonaccruing [Member] | Consumer Portfolio Segment [Member]
Loans And Allowance For Credit Losses [Line Items]
Financing Receivable, Modifications, Recorded Investment		$ 12,511,000		$ 12,511,000		$ 12,511,000		$ 21,074,000
[1]	Represents nonaccrual loans that are not past due more than 30 days; however, full payment of principal and interest is still not expected.

Loans And Allowance For Credi45

Loans And Allowance For Credit Losses (Summary Of Major Portfolio Segment And Specific Loan Class) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Provision for Loan Losses	$ 800	$ 0	$ 300	$ (2,500)
Balance at end of period	596,440	610,277	596,440	610,277
Loans held for sale	139,122		139,122			$ 132,504
Commercial and industrial	13,035,251		13,035,251			13,162,955
Leasing	426,781		426,781			408,974
Owner occupied	7,141,360		7,141,360			7,351,548
Municipal	600,258		600,258			520,887
Construction and land development	2,213,465		2,213,465			1,986,408
Term	8,089,258		8,089,258			8,126,600
Provision for loan losses	(18,262)	54,643	(17,334)	109,669
Change In Allowance Covered By F D I C Indemnification	0	25	0	1,286
Allowance for Loan and Lease Losses, Write-offs	(42,359)	(26,471)	(93,595)	(70,666)
Allowance for Loan and Lease Losses, Recoveries of Bad Debts	11,162	15,509	68,038	45,607
Net loan and lease charge-offs	(31,197)	(10,962)	(25,557)	(25,059)
Reserve for unfunded lending commitments	81,389	79,377	81,389	79,377	$ 79,961	81,076	$ 95,472	$ 89,705
Provision for Unfunded Lending Commitments	(1,428)	16,095	(313)	10,328
Total allowance for credit losses	677,829	689,654	677,829	689,654
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at end of period	46,474	44,467	46,474	44,467
Provision for loan losses	(2,466)	496	(2,533)	14,045
Change In Allowance Covered By F D I C Indemnification	0	0	0	96
Allowance for Loan and Lease Losses, Write-offs	(4,330)	(3,067)	(11,224)	(10,628)
Allowance for Loan and Lease Losses, Recoveries of Bad Debts	2,529	3,028	8,025	8,170
Net loan and lease charge-offs	(1,801)	(39)	(3,199)	(2,458)
Reserve for unfunded lending commitments	635	626	635	626	548	628	3,982	3,875
Provision for Unfunded Lending Commitments	(87)	3,356	(7)	3,249
Total allowance for credit losses	47,109	45,093	47,109	45,093
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at end of period	122,269	153,765	122,269	153,765
Construction and land development	2,213,465		2,213,465			1,986,408
Term	8,089,258		8,089,258			8,126,600
Provision for loan losses	6,621	34,187	38,491	57,350
Change In Allowance Covered By F D I C Indemnification	0	0	(57)	0
Allowance for Loan and Lease Losses, Write-offs	(1,068)	(3,320)	(5,637)	(14,135)
Allowance for Loan and Lease Losses, Recoveries of Bad Debts	4,162	3,332	21,331	9,238
Net loan and lease charge-offs	3,094	12	15,694	(4,897)
Reserve for unfunded lending commitments	17,172	24,299	17,172	24,299	18,639	21,517	38,689	37,485
Provision for Unfunded Lending Commitments	1,467	14,390	4,345	13,186
Total allowance for credit losses	139,441	178,064	139,441	178,064
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance at end of period	427,697	412,045	427,697	412,045
Commercial and industrial	13,035,251		13,035,251			13,162,955
Leasing	426,781		426,781			408,974
Owner occupied	7,141,360		7,141,360			7,351,548
Municipal	600,258		600,258			520,887
Provision for loan losses	(22,417)	19,960	(53,292)	38,274
Change In Allowance Covered By F D I C Indemnification	0	25	57	1,190
Allowance for Loan and Lease Losses, Write-offs	(36,961)	(20,084)	(76,734)	(45,903)
Allowance for Loan and Lease Losses, Recoveries of Bad Debts	4,471	9,149	38,682	28,199
Net loan and lease charge-offs	(32,490)	(10,935)	(38,052)	(17,704)
Reserve for unfunded lending commitments	63,582	54,452	63,582	54,452	$ 60,774	$ 58,931	$ 52,801	$ 48,345
Provision for Unfunded Lending Commitments	(2,808)	(1,651)	(4,651)	(6,107)
Total allowance for credit losses	$ 491,279	$ 466,497	$ 491,279	$ 466,497

Loans And Allowance For Credi46

Loans And Allowance For Credit Losses (Summary Of Changes In The Allowance For Credit Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses, Provision for Loss, Gross	$ (18,262)	$ 54,643	$ (17,334)	$ 109,669
Change In Allowance Covered By F D I C Indemnification	0	(25)	0	(1,286)
Allowance for Loan and Lease Losses, Write-offs	(42,359)	(26,471)	(93,595)	(70,666)
Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	609,375	675,907	604,663	746,291
Net loan and lease charge-offs	(31,197)	(10,962)	(25,557)	(25,059)
Balance at end of period	81,389	79,377	81,389	79,377
Allowance for loan losses	609,375	675,907	604,663	746,291	$ 596,440	$ 609,375	$ 604,663	$ 610,277	$ 675,907	$ 746,291
Reserve for unfunded lending commitments	81,389	79,377	81,389	79,377	81,389	79,961	81,076	79,377	95,472	89,705
Total allowance for credit losses					677,829			689,654
Allowance for Loan and Lease Losses, Recoveries of Bad Debts	11,162	15,509	68,038	45,607
Provision for Unfunded Lending Commitments	1,428	(16,095)	313	(10,328)
Balance at end of period	596,440	610,277	596,440	610,277
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses, Provision for Loss, Gross	(22,417)	19,960	(53,292)	38,274
Change In Allowance Covered By F D I C Indemnification	0	(25)	(57)	(1,190)
Allowance for Loan and Lease Losses, Write-offs	(36,961)	(20,084)	(76,734)	(45,903)
Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	437,770	442,965	412,514	469,213
Net loan and lease charge-offs	(32,490)	(10,935)	(38,052)	(17,704)
Balance at end of period	63,582	54,452	63,582	54,452
Allowance for loan losses	437,770	442,965	412,514	469,213	427,697	437,770	412,514	412,045	442,965	469,213
Reserve for unfunded lending commitments	63,582	54,452	63,582	54,452	63,582	60,774	58,931	54,452	52,801	48,345
Total allowance for credit losses					491,279			466,497
Allowance for Loan and Lease Losses, Recoveries of Bad Debts	4,471	9,149	38,682	28,199
Provision for Unfunded Lending Commitments	2,808	1,651	4,651	6,107
Balance at end of period	427,697	412,045	427,697	412,045
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses, Provision for Loss, Gross	6,621	34,187	38,491	57,350
Change In Allowance Covered By F D I C Indemnification	0	0	57	0
Allowance for Loan and Lease Losses, Write-offs	(1,068)	(3,320)	(5,637)	(14,135)
Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	125,796	187,940	145,009	216,012
Net loan and lease charge-offs	3,094	12	15,694	(4,897)
Balance at end of period	17,172	24,299	17,172	24,299
Allowance for loan losses	125,796	187,940	145,009	216,012	122,269	125,796	145,009	153,765	187,940	216,012
Reserve for unfunded lending commitments	17,172	24,299	17,172	24,299	17,172	18,639	21,517	24,299	38,689	37,485
Total allowance for credit losses					139,441			178,064
Allowance for Loan and Lease Losses, Recoveries of Bad Debts	4,162	3,332	21,331	9,238
Provision for Unfunded Lending Commitments	(1,467)	(14,390)	(4,345)	(13,186)
Balance at end of period	122,269	153,765	122,269	153,765
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses, Provision for Loss, Gross	(2,466)	496	(2,533)	14,045
Change In Allowance Covered By F D I C Indemnification	0	0	0	(96)
Allowance for Loan and Lease Losses, Write-offs	(4,330)	(3,067)	(11,224)	(10,628)
Allowance for Credit Losses [Roll Forward]
Balance at beginning of period	45,809	45,002	47,140	61,066
Net loan and lease charge-offs	(1,801)	(39)	(3,199)	(2,458)
Balance at end of period	635	626	635	626
Allowance for loan losses	45,809	45,002	47,140	61,066	46,474	45,809	47,140	44,467	45,002	61,066
Reserve for unfunded lending commitments	635	626	635	626	635	$ 548	$ 628	626	$ 3,982	$ 3,875
Total allowance for credit losses					$ 47,109			$ 45,093
Allowance for Loan and Lease Losses, Recoveries of Bad Debts	2,529	3,028	8,025	8,170
Provision for Unfunded Lending Commitments	87	(3,356)	7	(3,249)
Balance at end of period	$ 46,474	$ 44,467	$ 46,474	$ 44,467

Loans And Allowance For Credi47

Loans And Allowance For Credit Losses (Summary Of ALLL And Outstanding Loan Balances According To The Company's Impairment Method) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Impaired Financing Receivable, Average Recorded Investment	$ 602,925	$ 829,533	$ 573,862	$ 853,216
Impaired Financing Receivable, Interest Income, Accrual Method	9,279	14,387	35,198	58,263
Allowance for loan losses: Individually evaluated for impairment	(46,103)		(46,103)			$ (41,713)
Allowance for loan losses: Collectively evaluated for impairment	549,132		549,132			560,150
Allowance for loan losses: Purchased loans with evidence of credit deterioration	1,205		1,205			2,800
Allowance for loan losses: Total	596,440	610,277	596,440	610,277	$ 609,375	604,663	$ 675,907	$ 746,291
Outstanding loan balances: Individually evaluated for impairment	494,603		494,603			521,909
Outstanding loan balances: Collectively evaluated for impairment	39,485,299		39,485,299			39,362,450
Financing Receivable Allowance For Credit Losses and Receivables Acquired With Deteriorated Credit Quality	133,221		133,221			179,299
Total loans	40,113,123		40,113,123			40,063,658
Commercial and Industrial Sector [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Impaired Financing Receivable, Average Recorded Investment	191,642	186,026	158,825	180,130
Impaired Financing Receivable, Interest Income, Accrual Method	1,314	2,335	5,525	8,819
Owner Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Impaired Financing Receivable, Average Recorded Investment	138,194	232,484	135,212	235,380
Impaired Financing Receivable, Interest Income, Accrual Method	2,752	4,514	9,706	13,774
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses: Individually evaluated for impairment	(32,191)		(32,191)			(28,627)
Allowance for loan losses: Collectively evaluated for impairment	394,836		394,836			382,552
Allowance for loan losses: Purchased loans with evidence of credit deterioration	670		670			1,335
Allowance for loan losses: Total	427,697	412,045	427,697	412,045	437,770	412,514	442,965	469,213
Outstanding loan balances: Individually evaluated for impairment	279,928		279,928			259,207
Outstanding loan balances: Collectively evaluated for impairment	20,859,442		20,859,442			21,105,217
Financing Receivable Allowance For Credit Losses and Receivables Acquired With Deteriorated Credit Quality	64,280		64,280			79,940
Total loans	21,203,650		21,203,650			21,444,364
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Impaired Financing Receivable, Average Recorded Investment	31,506	59,735	31,920	62,404
Impaired Financing Receivable, Interest Income, Accrual Method	499	515	2,691	5,398
Allowance for loan losses: Total	122,269	153,765	122,269	153,765	125,796	145,009	187,940	216,012
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Impaired Financing Receivable, Average Recorded Investment	36	6,284	4,109	7,333
Impaired Financing Receivable, Interest Income, Accrual Method	177	384	692	1,315
Allowance for loan losses: Individually evaluated for impairment	(11,014)		(11,014)			(9,059)
Allowance for loan losses: Collectively evaluated for impairment	35,010		35,010			37,508
Allowance for loan losses: Purchased loans with evidence of credit deterioration	450		450			573
Allowance for loan losses: Total	46,474	44,467	46,474	44,467	$ 45,809	47,140	$ 45,002	$ 61,066
Outstanding loan balances: Individually evaluated for impairment	92,612		92,612			95,267
Outstanding loan balances: Collectively evaluated for impairment	8,503,160		8,503,160			8,395,371
Financing Receivable Allowance For Credit Losses and Receivables Acquired With Deteriorated Credit Quality	10,978		10,978			15,648
Total loans	8,606,750		8,606,750			8,506,286
Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Impaired Financing Receivable, Average Recorded Investment	330,814	427,308	295,044	424,853
Impaired Financing Receivable, Interest Income, Accrual Method	4,066	6,849	15,231	22,593
Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Impaired Financing Receivable, Average Recorded Investment	119,694	225,536	124,446	248,587
Impaired Financing Receivable, Interest Income, Accrual Method	3,705	5,670	13,383	26,118
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Impaired Financing Receivable, Average Recorded Investment	151,200	285,271	156,366	310,991
Impaired Financing Receivable, Interest Income, Accrual Method	4,204	6,185	16,074	31,516
Allowance for loan losses: Individually evaluated for impairment	(2,898)		(2,898)			(4,027)
Allowance for loan losses: Collectively evaluated for impairment	119,286		119,286			140,090
Allowance for loan losses: Purchased loans with evidence of credit deterioration	85		85			892
Allowance for loan losses: Total	122,269		122,269			145,009
Outstanding loan balances: Individually evaluated for impairment	122,063		122,063			167,435
Outstanding loan balances: Collectively evaluated for impairment	10,122,697		10,122,697			9,861,862
Financing Receivable Allowance For Credit Losses and Receivables Acquired With Deteriorated Credit Quality	57,963		57,963			83,711
Total loans	10,302,723		10,302,723			$ 10,113,008
Home Equity Line of Credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Impaired Financing Receivable, Average Recorded Investment	25,095	26,328	24,329	25,756
Impaired Financing Receivable, Interest Income, Accrual Method	401	369	1,206	1,139
One Through Four Family Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Impaired Financing Receivable, Average Recorded Investment	90,240	81,116	91,671	81,168
Impaired Financing Receivable, Interest Income, Accrual Method	398	556	1,803	1,583
Construction And Other Consumer Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Impaired Financing Receivable, Average Recorded Investment	5,540	3,226	2,342	3,112
Impaired Financing Receivable, Interest Income, Accrual Method	32	43	91	115
Revolving Credit Facility [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Impaired Financing Receivable, Average Recorded Investment	0	0	1	3
Impaired Financing Receivable, Interest Income, Accrual Method	1	1	101	2
Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Impaired Financing Receivable, Average Recorded Investment	120,911	116,954	122,452	117,372
Impaired Financing Receivable, Interest Income, Accrual Method	1,009	1,353	3,893	4,154
Municipal [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Impaired Financing Receivable, Average Recorded Investment	978	8,798	1,007	9,343
Impaired Financing Receivable, Interest Income, Accrual Method	$ 0	$ 0	$ 0	$ 0

Loans And Allowance For Credi48

Loans And Allowance For Credit Losses (Summary Of Nonaccrual Loans) (Details) - USD ($) $ in Thousands		Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Total	[1]	$ 193,883	$ 154,778
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total		15,202	23,880
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total		272	254
Commercial and Industrial Sector [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total		167,136	105,591
Finance Leases Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total		306	295
Owner Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total		76,624	87,243
Municipal [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total		967	1,056
Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total		245,033	194,185
Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total		39,053	25,107
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total		54,255	48,987
Home Equity Line of Credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total		9,792	11,430
One Through Four Family Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total		48,592	49,861
Construction And Other Consumer Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total		765	1,735
Revolving Credit Facility [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total		563	196
Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total		59,984	63,476
Financing Receivables, Total [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total		$ 359,272	$ 306,648
[1]	Represents nonaccrual loans that are not past due more than 30 days; however, full payment of principal and interest is still not expected.

Loans And Allowance For Credi49

Loans And Allowance For Credit Losses (Summary Of Past Due Loans (Accruing And Nonaccruing)) (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, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		$ 604	$ 2,265	$ 2,475	$ 2,466	$ 93,400	$ 97,300
Financing Receivable, Recorded Investment, Current		39,794,516		39,794,516		39,794,516		$ 39,796,072
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		166,927		166,927		166,927		104,491
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		151,680		151,680		151,680		163,095
Total past due		318,607		318,607		318,607		267,586
Total loans		40,113,123		40,113,123		40,113,123		40,063,658
Accruing loans 90+ days past due		34,857		34,857		34,857		29,228
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	193,883		193,883		193,883		154,778
Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		9	729	104	848
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans		21,203,650		21,203,650		21,203,650		21,444,364
Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		9	1,754	1,047	1,873
Financing Receivable, Recorded Investment, Nonaccrual Status		245,033		245,033		245,033		194,185
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Financing Receivable, Recorded Investment, Nonaccrual Status		15,202		15,202		15,202		23,880
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans		8,606,750		8,606,750		8,606,750		8,506,286
Financing Receivable, Recorded Investment, Nonaccrual Status		272		272		272		254
Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		595	511	595	593
Financing Receivable, Recorded Investment, Nonaccrual Status		59,984		59,984		59,984		63,476
Commercial and Industrial Sector [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status		167,136		167,136		167,136		105,591
Finance Leases Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status		306		306		306		295
Owner Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	1,025	943	1,025
Financing Receivable, Recorded Investment, Nonaccrual Status		76,624		76,624		76,624		87,243
Municipal [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status		967		967		967		1,056
Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	833	0
Financing Receivable, Recorded Investment, Nonaccrual Status		39,053		39,053		39,053		25,107
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	833	0
Total loans		10,302,723		10,302,723		10,302,723		10,113,008
Financing Receivable, Recorded Investment, Nonaccrual Status		54,255		54,255		54,255		48,987
Home Equity Line of Credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	158	0	201
Financing Receivable, Recorded Investment, Nonaccrual Status		9,792		9,792		9,792		11,430
One Through Four Family Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		595	353	595	353
Financing Receivable, Recorded Investment, Nonaccrual Status		48,592		48,592		48,592		49,861
Construction And Other Consumer Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	39
Financing Receivable, Recorded Investment, Nonaccrual Status		765		765		765		1,735
Revolving Credit Facility [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Recorded Investment, Nonaccrual Status		563		563		$ 563		$ 196
Accruing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	96	0	96
Accruing [Member] | Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	96	0	96
Accruing [Member] | Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	96	0	96
Accruing [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Accruing [Member] | Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Accruing [Member] | Owner Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Accruing [Member] | Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Accruing [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Accruing [Member] | Home Equity Line of Credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Accruing [Member] | One Through Four Family Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Accruing [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Nonaccruing [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		604	2,169	2,475	2,370
Nonaccruing [Member] | Commercial And Industrial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		9	633	104	752
Nonaccruing [Member] | Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		9	1,658	1,047	1,777
Nonaccruing [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Nonaccruing [Member] | Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		595	511	595	593
Nonaccruing [Member] | Owner Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	1,025	943	1,025
Nonaccruing [Member] | Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	833	0
Nonaccruing [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	833	0
Nonaccruing [Member] | Home Equity Line of Credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	158	0	201
Nonaccruing [Member] | One Through Four Family Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		595	353	595	353
Nonaccruing [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		$ 0	$ 0	$ 0	$ 39
[1]	Represents nonaccrual loans that are not past due more than 30 days; however, full payment of principal and interest is still not expected.

Loans And Allowance For Credi50

Loans And Allowance For Credit Losses (Summary Of Outstanding Loan Balances (Accruing And Nonaccruing) Categorized By Credit Quality Indicators) (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, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		$ 604	$ 2,265	$ 2,475	$ 2,466	$ 93,400	$ 97,300
Financing Receivable, Recorded Investment, Current		39,794,516		39,794,516		39,794,516		$ 39,796,072
Loans held for sale		139,122		139,122		139,122		132,504
Commercial and industrial		13,035,251		13,035,251		13,035,251		13,162,955
Leasing		426,781		426,781		426,781		408,974
Owner occupied		7,141,360		7,141,360		7,141,360		7,351,548
Municipal		600,258		600,258		600,258		520,887
Total commercial		21,203,650		21,203,650		21,203,650		21,444,364
Construction and land development		2,213,465		2,213,465		2,213,465		1,986,408
Term		8,089,258		8,089,258		8,089,258		8,126,600
Loans Receivable, Gross, Commercial, Real Estate		10,302,723		10,302,723		10,302,723		10,113,008
Loans and Leases Receivable, Gross, Consumer, Home Equity		2,347,061		2,347,061		2,347,061		2,321,150
1-4 family residential		5,268,840		5,268,840		5,268,840		5,200,882
Loans and Leases Receivable, Gross, Consumer, Construction		370,015		370,015		370,015		370,542
Bankcard and other revolving plans		427,849		427,849		427,849		401,352
Other		192,985		192,985		192,985		212,360
Total consumer		8,606,750		8,606,750		8,606,750		8,506,286
Total loans		40,113,123		40,113,123		40,113,123		40,063,658
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		166,927		166,927		166,927		104,491
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		151,680		151,680		151,680		163,095
Financing Receivable, Recorded Investment, Past Due		318,607		318,607		318,607		267,586
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		34,857		34,857		34,857		29,228
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	193,883		193,883		193,883		154,778
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity		2,347,061		2,347,061		2,347,061		2,321,150
1-4 family residential		5,268,840		5,268,840		5,268,840		5,200,882
Loans and Leases Receivable, Gross, Consumer, Construction		370,015		370,015		370,015		370,542
Bankcard and other revolving plans		427,849		427,849		427,849		401,352
Other		192,985		192,985		192,985		212,360
Total consumer		8,606,750		8,606,750		8,606,750		8,506,286
Total loans		8,606,750		8,606,750		8,606,750		8,506,286
Financing Receivable, Recorded Investment, Nonaccrual Status		272		272		272		254
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	$ 0	0	$ 0
Construction and land development		2,213,465		2,213,465		2,213,465		1,986,408
Term		8,089,258		8,089,258		8,089,258		8,126,600
Loans Receivable, Gross, Commercial, Real Estate		10,302,723		10,302,723		10,302,723		10,113,008
Financing Receivable, Recorded Investment, Nonaccrual Status		15,202		15,202		15,202		23,880
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Commercial and industrial		13,035,251		13,035,251		13,035,251		13,162,955
Leasing		426,781		426,781		426,781		408,974
Owner occupied		7,141,360		7,141,360		7,141,360		7,351,548
Municipal		600,258		600,258		600,258		520,887
Total commercial		21,203,650		21,203,650		21,203,650		21,444,364
Total loans		21,203,650		21,203,650		21,203,650		21,444,364
Pass [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans		38,284,409		38,284,409		38,284,409		38,428,158
Pass [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity		2,333,240		2,333,240		2,333,240		2,304,352
1-4 family residential		5,214,015		5,214,015		5,214,015		5,138,660
Loans and Leases Receivable, Gross, Consumer, Construction		368,363		368,363		368,363		367,932
Bankcard and other revolving plans		425,979		425,979		425,979		399,446
Other		192,564		192,564		192,564		211,811
Total consumer		8,534,161		8,534,161		8,534,161		8,422,201
Pass [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Construction and land development		2,166,381		2,166,381		2,166,381		1,925,685
Term		7,862,956		7,862,956		7,862,956		7,802,571
Loans Receivable, Gross, Commercial, Real Estate		10,029,337		10,029,337		10,029,337		9,728,256
Pass [Member] | Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Commercial and industrial		12,037,219		12,037,219		12,037,219		12,515,846
Leasing		400,233		400,233		400,233		399,032
Owner occupied		6,684,216		6,684,216		6,684,216		6,844,310
Municipal		599,243		599,243		599,243		518,513
Total commercial		19,720,911		19,720,911		19,720,911		20,277,701
Special Mention [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans		505,790		505,790		505,790		488,635
Special Mention [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity		0		0		0		0
1-4 family residential		0		0		0		0
Loans and Leases Receivable, Gross, Consumer, Construction		0		0		0		0
Bankcard and other revolving plans		0		0		0		0
Other		0		0		0		0
Total consumer		0		0		0		0
Special Mention [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Construction and land development		19,138		19,138		19,138		8,464
Term		59,689		59,689		59,689		96,347
Loans Receivable, Gross, Commercial, Real Estate		78,827		78,827		78,827		104,811
Special Mention [Member] | Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Commercial and industrial		281,696		281,696		281,696		209,215
Leasing		3,015		3,015		3,015		4,868
Owner occupied		142,204		142,204		142,204		168,423
Municipal		48		48		48		1,318
Total commercial		426,963		426,963		426,963		383,824
Total Allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans		596,440		596,440		596,440		604,663
Total Allowance [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total consumer		46,474		46,474		46,474		47,140
Total Allowance [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans Receivable, Gross, Commercial, Real Estate		122,269		122,269		122,269		145,009
Total Allowance [Member] | Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total commercial		427,697		427,697		427,697		412,514
Doubtful [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans		7,250		7,250		7,250		16,250
Doubtful [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity		0		0		0		0
1-4 family residential		0		0		0		0
Loans and Leases Receivable, Gross, Consumer, Construction		0		0		0		0
Bankcard and other revolving plans		0		0		0		0
Other		0		0		0		0
Total consumer		0		0		0		0
Doubtful [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Construction and land development		0		0		0		0
Term		0		0		0		4,358
Loans Receivable, Gross, Commercial, Real Estate		0		0		0		4,358
Doubtful [Member] | Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Commercial and industrial		7,250		7,250		7,250		11,892
Leasing		0		0		0		0
Owner occupied		0		0		0		0
Municipal		0		0		0		0
Total commercial		7,250		7,250		7,250		11,892
Substandard [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Total loans		1,315,674		1,315,674		1,315,674		1,130,615
Substandard [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity		13,821		13,821		13,821		16,798
1-4 family residential		54,825		54,825		54,825		62,222
Loans and Leases Receivable, Gross, Consumer, Construction		1,652		1,652		1,652		2,610
Bankcard and other revolving plans		1,870		1,870		1,870		1,906
Other		421		421		421		549
Total consumer		72,589		72,589		72,589		84,085
Substandard [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Construction and land development		27,946		27,946		27,946		52,259
Term		166,613		166,613		166,613		223,324
Loans Receivable, Gross, Commercial, Real Estate		194,559		194,559		194,559		275,583
Substandard [Member] | Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Commercial and industrial		709,086		709,086		709,086		426,002
Leasing		23,533		23,533		23,533		5,074
Owner occupied		314,940		314,940		314,940		338,815
Municipal		967		967		967		1,056
Total commercial		1,048,526		1,048,526		1,048,526		770,947
Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Recorded Investment, Current		8,549,111		8,549,111		8,549,111		8,442,742
Total loans		8,606,750		8,606,750		8,606,750		8,506,286
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		22,853		22,853		22,853		29,663
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		34,786		34,786		34,786		33,881
Financing Receivable, Recorded Investment, Past Due		57,639		57,639		57,639		63,544
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		1,664		1,664		1,664		1,425
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	21,892		21,892		21,892		23,150
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Recorded Investment, Current		192,042		192,042		192,042		211,560
Total loans		192,985		192,985		192,985		212,360
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		877		877		877		644
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		66		66		66		156
Financing Receivable, Recorded Investment, Past Due		943		943		943		800
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		0		0		0		0
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	46		46		46		84
Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Recorded Investment, Current		8,039,923		8,039,923		8,039,923		8,082,940
Total loans		8,089,258		8,089,258		8,089,258		8,126,600
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		15,578		15,578		15,578		14,415
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		33,757		33,757		33,757		29,245
Financing Receivable, Recorded Investment, Past Due		49,335		49,335		49,335		43,660
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		20,503		20,503		20,503		19,700
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	23,188		23,188		23,188		13,787
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Recorded Investment, Current		2,195,193		2,195,193		2,195,193		1,972,206
Total loans		2,213,465		2,213,465		2,213,465		1,986,408
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		12,447		12,447		12,447		2,711
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		5,825		5,825		5,825		11,491
Financing Receivable, Recorded Investment, Past Due		18,272		18,272		18,272		14,202
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		2,296		2,296		2,296		92
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	10,914		10,914		10,914		12,481
Commercial and Industrial Sector [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Recorded Investment, Current		12,909,622		12,909,622		12,909,622		13,092,731
Total loans		13,035,251		13,035,251		13,035,251		13,162,955
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		79,246		79,246		79,246		28,295
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		46,383		46,383		46,383		41,929
Financing Receivable, Recorded Investment, Past Due		125,629		125,629		125,629		70,224
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		4,951		4,951		4,951		4,677
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	90,584		90,584		90,584		64,385
Finance Leases Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Recorded Investment, Current		423,071		423,071		423,071		408,724
Total loans		426,781		426,781		426,781		408,974
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		3,557		3,557		3,557		225
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		153		153		153		25
Financing Receivable, Recorded Investment, Past Due		3,710		3,710		3,710		250
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		0		0		0		0
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	55		55		55		270
Owner Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Recorded Investment, Current		7,077,386		7,077,386		7,077,386		7,275,842
Total loans		7,141,360		7,141,360		7,141,360		7,351,548
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		33,198		33,198		33,198		29,182
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		30,776		30,776		30,776		46,524
Financing Receivable, Recorded Investment, Past Due		63,974		63,974		63,974		75,706
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		5,443		5,443		5,443		3,334
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	46,283		46,283		46,283		39,649
Municipal [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Recorded Investment, Current		600,210		600,210		600,210		520,887
Total loans		600,258		600,258		600,258		520,887
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		48		48		48		0
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		0		0		0		0
Financing Receivable, Recorded Investment, Past Due		48		48		48		0
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		0		0		0		0
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	967		967		967		1,056
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Recorded Investment, Current		10,235,116		10,235,116		10,235,116		10,055,146
Total loans		10,302,723		10,302,723		10,302,723		10,113,008
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		28,025		28,025		28,025		17,126
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		39,582		39,582		39,582		40,736
Financing Receivable, Recorded Investment, Past Due		67,607		67,607		67,607		57,862
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		22,799		22,799		22,799		19,792
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	34,102		34,102		34,102		26,268
Home Equity Line of Credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Recorded Investment, Current		2,336,740		2,336,740		2,336,740		2,309,967
Total loans		2,347,061		2,347,061		2,347,061		2,321,150
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		4,694		4,694		4,694		4,503
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		5,627		5,627		5,627		6,680
Financing Receivable, Recorded Investment, Past Due		10,321		10,321		10,321		11,183
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		0		0		0		1
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	2,592		2,592		2,592		1,779
Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Recorded Investment, Current		21,010,289		21,010,289		21,010,289		21,298,184
Total loans		21,203,650		21,203,650		21,203,650		21,444,364
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		116,049		116,049		116,049		57,702
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		77,312		77,312		77,312		88,478
Financing Receivable, Recorded Investment, Past Due		193,361		193,361		193,361		146,180
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		10,394		10,394		10,394		8,011
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	137,889		137,889		137,889		105,360
One Through Four Family Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Recorded Investment, Current		5,231,005		5,231,005		5,231,005		5,163,610
Total loans		5,268,840		5,268,840		5,268,840		5,200,882
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		10,137		10,137		10,137		12,416
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		27,698		27,698		27,698		24,856
Financing Receivable, Recorded Investment, Past Due		37,835		37,835		37,835		37,272
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		877		877		877		318
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	18,739		18,739		18,739		20,599
Construction And Other Consumer Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Recorded Investment, Current		364,283		364,283		364,283		359,723
Total loans		370,015		370,015		370,015		370,542
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		5,524		5,524		5,524		9,675
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		208		208		208		1,144
Financing Receivable, Recorded Investment, Past Due		5,732		5,732		5,732		10,819
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		0		0		0		160
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	$ 401		$ 401		$ 401		$ 608
[1]	Represents nonaccrual loans that are not past due more than 30 days; however, full payment of principal and interest is still not expected.

Loans And Allowance For Credi51

Loans And Allowance For Credit Losses (Summary Of Information On Impaired Loans) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity	$ 2,347,061		$ 2,347,061		$ 2,321,150
Unpaid principal balance	692,856		692,856		777,333
Recorded investment	577,308		577,308		628,728
Impaired Financing Receivable, Related Allowance	45,494		45,494		42,354
Average recorded investment	602,925	$ 829,533	573,862	$ 853,216
Interest income recognized	9,279	14,387	35,198	58,263
Commercial and Industrial Sector [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	245,404		245,404		185,520
Recorded investment	194,508		194,508		146,822
Impaired Financing Receivable, Related Allowance	26,888		26,888		22,852
Average recorded investment	191,642	186,026	158,825	180,130
Interest income recognized	1,314	2,335	5,525	8,819
Owner Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	151,243		151,243		198,231
Recorded investment	131,927		131,927		169,561
Impaired Financing Receivable, Related Allowance	5,091		5,091		6,087
Average recorded investment	138,194	232,484	135,212	235,380
Interest income recognized	2,752	4,514	9,706	13,774
Municipal [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	1,446		1,446		1,535
Recorded investment	967		967		1,056
Impaired Financing Receivable, Related Allowance	0		0		0
Average recorded investment	978	8,798	1,007	9,343
Interest income recognized	0	0	0	0
Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	398,093		398,093		385,286
Recorded investment	327,402		327,402		317,439
Impaired Financing Receivable, Related Allowance	31,979		31,979		28,939
Average recorded investment	330,814	427,308	295,044	424,853
Interest income recognized	4,066	6,849	15,231	22,593
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	47,876		47,876		60,993
Recorded investment	31,286		31,286		43,477
Impaired Financing Receivable, Related Allowance	1,068		1,068		1,773
Average recorded investment	31,506	59,735	31,920	62,404
Interest income recognized	499	515	2,691	5,398
Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	138,865		138,865		203,788
Recorded investment	118,150		118,150		160,091
Impaired Financing Receivable, Related Allowance	1,463		1,463		2,345
Average recorded investment	119,694	225,536	124,446	248,587
Interest income recognized	3,705	5,670	13,383	26,118
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	186,741		186,741		264,781
Recorded investment	149,436		149,436		203,568
Impaired Financing Receivable, Related Allowance	2,531		2,531		4,118
Average recorded investment	151,200	285,271	156,366	310,991
Interest income recognized	4,204	6,185	16,074	31,516
Home Equity Line of Credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	28,358		28,358		30,209
Recorded investment	25,375		25,375		26,681
Impaired Financing Receivable, Related Allowance	419		419		437
Average recorded investment	25,095	26,328	24,329	25,756
Interest income recognized	401	369	1,206	1,139
Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity	2,347,061		2,347,061		2,321,150
Unpaid principal balance	3,843		3,843		6,580
Recorded investment	3,198		3,198		5,254
Impaired Financing Receivable, Related Allowance	294		294		133
Average recorded investment	36	6,284	4,109	7,333
Interest income recognized	177	384	692	1,315
One Through Four Family Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	72,855		72,855		86,575
Recorded investment	69,722		69,722		72,927
Impaired Financing Receivable, Related Allowance	10,090		10,090		8,494
Average recorded investment	90,240	81,116	91,671	81,168
Interest income recognized	398	556	1,803	1,583
Construction And Other Consumer Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	2,966		2,966		3,902
Recorded investment	2,175		2,175		2,859
Impaired Financing Receivable, Related Allowance	181		181		233
Average recorded investment	5,540	3,226	2,342	3,112
Interest income recognized	32	43	91	115
Revolving Credit Facility [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Average recorded investment	0	0	1	3
Interest income recognized	1	1	101	2
Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	108,022		108,022		127,266
Recorded investment	100,470		100,470		107,721
Impaired Financing Receivable, Related Allowance	10,984		10,984		9,297
Average recorded investment	120,911	116,954	122,452	117,372
Interest income recognized	1,009	$ 1,353	3,893	$ 4,154
Impaired Financing Receivable Related Allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	306,157		306,157		335,042
Impaired Financing Receivable Related Allowance [Member] | Commercial and Industrial Sector [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	156,665		156,665		103,565
Impaired Financing Receivable Related Allowance [Member] | Owner Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	48,400		48,400		86,382
Impaired Financing Receivable Related Allowance [Member] | Municipal [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	0		0		0
Impaired Financing Receivable Related Allowance [Member] | Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	205,065		205,065		189,947
Impaired Financing Receivable Related Allowance [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	23,800		23,800		26,977
Impaired Financing Receivable Related Allowance [Member] | Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	27,856		27,856		63,740
Impaired Financing Receivable Related Allowance [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	51,656		51,656		90,717
Impaired Financing Receivable Related Allowance [Member] | Home Equity Line of Credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	4,703		4,703		11,883
Impaired Financing Receivable Related Allowance [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	3,162		3,162		5,254
Impaired Financing Receivable Related Allowance [Member] | One Through Four Family Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	40,465		40,465		35,831
Impaired Financing Receivable Related Allowance [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	1,106		1,106		1,410
Impaired Financing Receivable Related Allowance [Member] | Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	49,436		49,436		54,378
Impaired Financing Receivable Recorded Investment With No Allowance [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	271,151		271,151		293,686
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Commercial and Industrial Sector [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	37,843		37,843		43,257
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Owner Occupied [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	83,527		83,527		83,179
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Municipal [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	967		967		1,056
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Commercial Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	122,337		122,337		127,492
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	7,486		7,486		16,500
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Term [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	90,294		90,294		96,351
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	97,780		97,780		112,851
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Home Equity Line of Credit [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	20,672		20,672		14,798
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	36		36		0
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | One Through Four Family Residential [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	29,257		29,257		37,096
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	1,069		1,069		1,449
Impaired Financing Receivable Recorded Investment With No Allowance [Member] | Consumer Loan [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment	$ 51,034		$ 51,034		$ 53,343

Loans And Allowance For Credi52

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.

Loans And Allowance For Credi53

Loans And Allowance For Credit Losses (Summary Of Net Financial Impact On Interest Income Due To Interest Rate Modifications Below Market For Accruing TDR Loans) (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
Loans and Leases Receivable, Gross, Consumer, Home Equity		2,347,061		2,347,061		2,347,061		$ 2,321,150
Net financial impact on interest income		490	643	1,624	1,915
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Net financial impact on interest income		113	160	419	434
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Net financial impact on interest income		(26)	(48)	(88)	(154)
Consumer Portfolio Segment [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity		2,347,061		2,347,061		2,347,061		2,321,150
Net financial impact on interest income		267	285	822	892
Commercial and Industrial Sector [Member]
Financing Receivable, Modifications [Line Items]
Net financial impact on interest income		(67)	(36)	(189)	(34)
Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	1,025	943	1,025
Net financial impact on interest income		(46)	(124)	(230)	(400)
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
Net financial impact on interest income		(84)	(150)	(295)	(435)
One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		595	353	595	353
Net financial impact on interest income		(260)	(276)	(800)	(863)
Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	39
Net financial impact on interest income		(7)	(8)	(21)	(25)
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	833	0
Net financial impact on interest income		110	198	383	589
Home Equity Line of Credit [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	158	0	201
Net financial impact on interest income		0	(1)	(1)	(4)
Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		595	511	595	593
Nonaccruing [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		604	2,169	2,475	2,370
Nonaccruing [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	1,025	943	1,025
Nonaccruing [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		9	1,658	1,047	1,777
Nonaccruing [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	833	0
Nonaccruing [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		595	353	595	353
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
Nonaccruing [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	833	0
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] | 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
Accruing [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Accruing [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	96	0	96
Accruing [Member] | Term [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
Loans and Leases Receivable, Gross, Consumer, Home Equity		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
Accruing [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
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] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	$ 0	0	$ 0
Accruing [Member] | Principal Forgiveness [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity		11,143		11,143		11,143		11,320
Accruing [Member] | Interest Rate Below Market [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity		192		192		192		742
Accruing [Member] | Maturity Or Team Extension [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity		1,060		1,060		1,060		70
Accruing [Member] | Payment Deferral [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity		0		0		0		0
Accruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity	[1]	164		164		164		166
Accruing [Member] | Multiple Modification Types [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity	[2]	$ 2,360		$ 2,360		$ 2,360		$ 1,281
[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.

Loans And Allowance For Credi54

Loans And Allowance For Credit Losses (Schedule Of Investment Of Accruing And Nonaccruing Loans Modified As Troubled Debt Restructurings) (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
Loans Receivable, Gross, Commercial and Industrial		13,035,251		13,035,251		13,035,251		$ 13,162,955
Loans and Leases Receivable, Gross, Consumer, Home Equity		2,347,061		2,347,061		2,347,061		2,321,150
Loans and Leases Receivable, Gross, Consumer, Mortgage		5,268,840		5,268,840		5,268,840		5,200,882
Loans and Leases Receivable, Gross, Consumer, Construction		370,015		370,015		370,015		370,542
Loans and Leases Receivable, Gross, Consumer, Revolving, Credit Card		427,849		427,849		427,849		401,352
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Loans Receivable, Gross, 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
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
ERROR in label resolution.
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity		2,347,061		2,347,061		2,347,061		2,321,150
Loans and Leases Receivable, Gross, Consumer, Mortgage		5,268,840		5,268,840		5,268,840		5,200,882
Loans and Leases Receivable, Gross, Consumer, Construction		370,015		370,015		370,015		370,542
Loans and Leases Receivable, Gross, Consumer, Revolving, Credit Card		427,849		427,849		427,849		401,352
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
Financing Receivable, Modifications, Recorded Investment		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
Financing Receivable, Modifications, Recorded Investment		13,528		13,528		13,528		20,375
Accruing [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	96	0	96
Loans Receivable, Gross, 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
Financing Receivable, Modifications, Recorded Investment		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
Financing Receivable, Modifications, Recorded Investment		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
Financing Receivable, Modifications, Recorded Investment		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
Financing Receivable, Modifications, Recorded Investment		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
Loans and Leases Receivable, Gross, Consumer, Home Equity		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
Loans and Leases Receivable, Gross, Consumer, Mortgage		49,038		49,038		49,038		45,723
Accruing [Member] | ERROR in label resolution.
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Construction		1,818		1,818		1,818		2,071
Accruing [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		0	0	0	0
Financing Receivable, Modifications, Recorded Investment		65,775		65,775		65,775		61,373
Accruing [Member] | Interest Rate Below Market [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		10,195		10,195		10,195		33,377
Accruing [Member] | Interest Rate Below Market [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		97		97		97		0
Accruing [Member] | Interest Rate Below Market [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Loans Receivable, Gross, Commercial and Industrial		455		455		455		2,611
Accruing [Member] | Interest Rate Below Market [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		2,034		2,034		2,034		19,981
Accruing [Member] | Interest Rate Below Market [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		2,489		2,489		2,489		22,592
Accruing [Member] | Interest Rate Below Market [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		4,758		4,758		4,758		7,328
Accruing [Member] | Interest Rate Below Market [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		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]
Loans and Leases Receivable, Gross, Consumer, Home Equity		192		192		192		742
Accruing [Member] | Interest Rate Below Market [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Mortgage		2,482		2,482		2,482		2,425
Accruing [Member] | Interest Rate Below Market [Member] | ERROR in label resolution.
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Construction		177		177		177		290
Accruing [Member] | Interest Rate Below Market [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		2,851		2,851		2,851		3,457
Accruing [Member] | Multiple Modification Types [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[1]	125,070		125,070		125,070		148,178
Accruing [Member] | Multiple Modification Types [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[1]	13,431		13,431		13,431		19,854
Accruing [Member] | Multiple Modification Types [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Loans Receivable, Gross, Commercial and Industrial	[1]	35,228		35,228		35,228		34,585
Accruing [Member] | Multiple Modification Types [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[1]	17,172		17,172		17,172		17,505
Accruing [Member] | Multiple Modification Types [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[1]	52,400		52,400		52,400		52,090
Accruing [Member] | Multiple Modification Types [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[1]	20,825		20,825		20,825		39,007
Accruing [Member] | Multiple Modification Types [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[1]	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]
Loans and Leases Receivable, Gross, Consumer, Home Equity	[1]	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]
Loans and Leases Receivable, Gross, Consumer, Mortgage	[1]	34,901		34,901		34,901		34,719
Accruing [Member] | Multiple Modification Types [Member] | ERROR in label resolution.
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Construction	[1]	1,153		1,153		1,153		1,227
Accruing [Member] | Multiple Modification Types [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[1]	38,414		38,414		38,414		37,227
Accruing [Member] | Other Recorded Investment Resulting From Following Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[2]	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]
Financing Receivable, Modifications, Recorded Investment	[2]	0		0		0		521
Accruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Loans Receivable, Gross, Commercial and Industrial	[2]	223		223		223		3,855
Accruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[2]	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]
Financing Receivable, Modifications, Recorded Investment	[2]	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]
Financing Receivable, Modifications, Recorded Investment	[2]	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]
Financing Receivable, Modifications, Recorded Investment	[2]	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]
Loans and Leases Receivable, Gross, Consumer, Home Equity	[2]	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]
Loans and Leases Receivable, Gross, Consumer, Mortgage	[2]	3,474		3,474		3,474		753
Accruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | ERROR in label resolution.
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Construction	[2]	0		0		0		0
Accruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[2]	3,638		3,638		3,638		919
Accruing [Member] | Payment Deferral [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		1,518		1,518		1,518		8,143
Accruing [Member] | Payment Deferral [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		0		0		0		0
Accruing [Member] | Payment Deferral [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Loans Receivable, Gross, Commercial and Industrial		108		108		108		3,203
Accruing [Member] | Payment Deferral [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		0		0		0		1,251
Accruing [Member] | Payment Deferral [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		108		108		108		4,454
Accruing [Member] | Payment Deferral [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		975		975		975		3,153
Accruing [Member] | Payment Deferral [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		975		975		975		3,153
Accruing [Member] | Payment Deferral [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity		0		0		0		0
Accruing [Member] | Payment Deferral [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Mortgage		435		435		435		446
Accruing [Member] | Payment Deferral [Member] | ERROR in label resolution.
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Construction		0		0		0		90
Accruing [Member] | Payment Deferral [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		435		435		435		536
Accruing [Member] | Principal Forgiveness [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		19,653		19,653		19,653		19,347
Accruing [Member] | Principal Forgiveness [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		0		0		0		0
Accruing [Member] | Principal Forgiveness [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Loans Receivable, Gross, Commercial and Industrial		14		14		14		18
Accruing [Member] | Principal Forgiveness [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		938		938		938		960
Accruing [Member] | Principal Forgiveness [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		952		952		952		978
Accruing [Member] | Principal Forgiveness [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		170		170		170		179
Accruing [Member] | Principal Forgiveness [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		170		170		170		179
Accruing [Member] | Principal Forgiveness [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity		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]
Loans and Leases Receivable, Gross, Consumer, Mortgage		7,388		7,388		7,388		6,828
Accruing [Member] | Principal Forgiveness [Member] | ERROR in label resolution.
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Construction		0		0		0		42
Accruing [Member] | Principal Forgiveness [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		18,531		18,531		18,531		18,190
Accruing [Member] | Maturity Or Team Extension [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		7,279		7,279		7,279		17,704
Accruing [Member] | Maturity Or Team Extension [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		0		0		0		0
Accruing [Member] | Maturity Or Team Extension [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Loans Receivable, Gross, 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]
Financing Receivable, Modifications, Recorded Investment		701		701		701		1,124
Accruing [Member] | Maturity Or Team Extension [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		4,607		4,607		4,607		7,633
Accruing [Member] | Maturity Or Team Extension [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		766		766		766		9,027
Accruing [Member] | Maturity Or Team Extension [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		766		766		766		9,027
Accruing [Member] | Maturity Or Team Extension [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity		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]
Loans and Leases Receivable, Gross, Consumer, Mortgage		358		358		358		552
Accruing [Member] | Maturity Or Team Extension [Member] | ERROR in label resolution.
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Construction		488		488		488		422
Accruing [Member] | Maturity Or Team Extension [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		1,906		1,906		1,906		1,044
Nonaccruing [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		604	2,169	2,475	2,370
Financing Receivable, Modifications, Recorded Investment		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
Financing Receivable, Modifications, Recorded Investment		15,031		15,031		15,031		20,968
Nonaccruing [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		9	633	104	752
Loans Receivable, Gross, 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
Financing Receivable, Modifications, Recorded Investment		17,891		17,891		17,891		19,708
Nonaccruing [Member] | Municipal [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		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
Financing Receivable, Modifications, Recorded Investment		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
Financing Receivable, Modifications, Recorded Investment		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
Financing Receivable, Modifications, Recorded Investment		31,138		31,138		31,138		28,703
Nonaccruing [Member] | Home Equity Credit Line [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity		1,140		1,140		1,140		1,022
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] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		595	353	595	353
Loans and Leases Receivable, Gross, Consumer, Mortgage		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
Loans and Leases Receivable, Gross, Consumer, Construction		293		293		293		563
Nonaccruing [Member] | ERROR in label resolution.
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		12,511		12,511		12,511		21,074
Nonaccruing [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment		595	$ 511	595	$ 593
Financing Receivable, Modifications, Recorded Investment		108,387		108,387		108,387		97,779
Nonaccruing [Member] | Interest Rate Below Market [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		24,481		24,481		24,481		53,842
Nonaccruing [Member] | Interest Rate Below Market [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		10,512		10,512		10,512		11,080
Nonaccruing [Member] | Interest Rate Below Market [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Loans Receivable, Gross, Commercial and Industrial		90		90		90		442
Nonaccruing [Member] | Interest Rate Below Market [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		1,220		1,220		1,220		2,714
Nonaccruing [Member] | Interest Rate Below Market [Member] | Municipal [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		0		0		0		0
Nonaccruing [Member] | Interest Rate Below Market [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		1,310		1,310		1,310		3,156
Nonaccruing [Member] | Interest Rate Below Market [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		2,456		2,456		2,456		2,851
Nonaccruing [Member] | Interest Rate Below Market [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		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]
Loans and Leases Receivable, Gross, Consumer, Home Equity		8		8		8		0
Nonaccruing [Member] | Interest Rate Below Market [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Mortgage		0		0		0		3,378
Nonaccruing [Member] | Interest Rate Below Market [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Construction		0		0		0		0
Nonaccruing [Member] | Interest Rate Below Market [Member] | ERROR in label resolution.
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		8		8		8		3,378
Nonaccruing [Member] | Interest Rate Below Market [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		14,286		14,286		14,286		20,465
Nonaccruing [Member] | Multiple Modification Types [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[1]	190,412		190,412		190,412		201,574
Nonaccruing [Member] | Multiple Modification Types [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[1]	968		968		968		6,427
Nonaccruing [Member] | Multiple Modification Types [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Loans Receivable, Gross, Commercial and Industrial	[1]	37,950		37,950		37,950		20,410
Nonaccruing [Member] | Multiple Modification Types [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[1]	9,060		9,060		9,060		12,040
Nonaccruing [Member] | Multiple Modification Types [Member] | Municipal [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		0		0		0		0
Nonaccruing [Member] | Multiple Modification Types [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[1]	47,010		47,010		47,010		32,450
Nonaccruing [Member] | Multiple Modification Types [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[1]	9,919		9,919		9,919		4,607
Nonaccruing [Member] | Multiple Modification Types [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[1]	10,887		10,887		10,887		11,034
Nonaccruing [Member] | Multiple Modification Types [Member] | Home Equity Credit Line [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity	[1]	48		48		48		399
Nonaccruing [Member] | Multiple Modification Types [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Mortgage	[1]	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]
Loans and Leases Receivable, Gross, Consumer, Construction	[1]	72		72		72		100
Nonaccruing [Member] | Multiple Modification Types [Member] | ERROR in label resolution.
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[1]	7,445		7,445		7,445		9,912
Nonaccruing [Member] | Multiple Modification Types [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[1]	65,342		65,342		65,342		53,396
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[2]	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]
Financing Receivable, Modifications, Recorded Investment	[2]	3,197		3,197		3,197		3,300
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Loans Receivable, Gross, Commercial and Industrial	[2]	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]
Financing Receivable, Modifications, Recorded Investment	[2]	36		36		36		2,852
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Municipal [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		0		0		0		0
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[2]	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]
Financing Receivable, Modifications, Recorded Investment	[2]	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]
Financing Receivable, Modifications, Recorded Investment	[2]	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]
Loans and Leases Receivable, Gross, Consumer, Home Equity	[2]	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]
Loans and Leases Receivable, Gross, Consumer, Mortgage	[2]	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]
Loans and Leases Receivable, Gross, Consumer, Construction	[2]	0		0		0		0
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | ERROR in label resolution.
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[2]	1,227		1,227		1,227		3,527
Nonaccruing [Member] | Other Recorded Investment Resulting From Following Modification [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	[2]	12,710		12,710		12,710		15,155
Nonaccruing [Member] | Payment Deferral [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		9,660		9,660		9,660		10,124
Nonaccruing [Member] | Payment Deferral [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		0		0		0		93
Nonaccruing [Member] | Payment Deferral [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Loans Receivable, Gross, Commercial and Industrial		2,018		2,018		2,018		611
Nonaccruing [Member] | Payment Deferral [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		5,833		5,833		5,833		883
Nonaccruing [Member] | Payment Deferral [Member] | Municipal [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		0		0		0		0
Nonaccruing [Member] | Payment Deferral [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		7,851		7,851		7,851		1,494
Nonaccruing [Member] | Payment Deferral [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		0		0		0		0
Nonaccruing [Member] | Payment Deferral [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		0		0		0		93
Nonaccruing [Member] | Payment Deferral [Member] | Home Equity Credit Line [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity		58		58		58		203
Nonaccruing [Member] | Payment Deferral [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Mortgage		173		173		173		191
Nonaccruing [Member] | Payment Deferral [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Construction		60		60		60		0
Nonaccruing [Member] | Payment Deferral [Member] | ERROR in label resolution.
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		291		291		291		394
Nonaccruing [Member] | Payment Deferral [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		8,142		8,142		8,142		1,981
Nonaccruing [Member] | Principal Forgiveness [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		23,101		23,101		23,101		21,718
Nonaccruing [Member] | Principal Forgiveness [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		0		0		0		0
Nonaccruing [Member] | Principal Forgiveness [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Loans Receivable, Gross, Commercial and Industrial		0		0		0		0
Nonaccruing [Member] | Principal Forgiveness [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		0		0		0		0
Nonaccruing [Member] | Principal Forgiveness [Member] | Municipal [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		0		0		0		0
Nonaccruing [Member] | Principal Forgiveness [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		0		0		0		0
Nonaccruing [Member] | Principal Forgiveness [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		833		833		833		0
Nonaccruing [Member] | Principal Forgiveness [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		833		833		833		0
Nonaccruing [Member] | Principal Forgiveness [Member] | Home Equity Credit Line [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity		512		512		512		420
Nonaccruing [Member] | Principal Forgiveness [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Mortgage		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]
Loans and Leases Receivable, Gross, Consumer, Construction		18		18		18		0
Nonaccruing [Member] | Principal Forgiveness [Member] | ERROR in label resolution.
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		2,615		2,615		2,615		2,371
Nonaccruing [Member] | Principal Forgiveness [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		3,448		3,448		3,448		2,371
Nonaccruing [Member] | Maturity Or Team Extension [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		11,738		11,738		11,738		22,115
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		354		354		354		68
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Commercial And Industrial [Member]
Financing Receivable, Modifications [Line Items]
Loans Receivable, Gross, Commercial and Industrial		471		471		471		576
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Owner Occupied [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		1,742		1,742		1,742		1,219
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Municipal [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		967		967		967		1,056
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Commercial Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		3,180		3,180		3,180		2,851
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Term [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		0		0		0		0
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		354		354		354		68
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Home Equity Credit Line [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Home Equity		514		514		514		0
Nonaccruing [Member] | Maturity Or Team Extension [Member] | One Through Four Family Residential [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Mortgage		268		268		268		1,029
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Construction And Other Consumer Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Loans and Leases Receivable, Gross, Consumer, Construction		143		143		143		463
Nonaccruing [Member] | Maturity Or Team Extension [Member] | ERROR in label resolution.
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		925		925		925		1,492
Nonaccruing [Member] | Maturity Or Team Extension [Member] | Consumer Loan [Member]
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment		$ 4,459		$ 4,459		$ 4,459		$ 4,411
[1]	Includes TDRs that resulted from a combination of any of the previous modification types.
[2]	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.

Loans And Allowance For Credi55

Loans And Allowance For Credit Losses (Schedule Of Outstanding Balances Of All Required Payments And The Related Carrying Amounts For PCI Loans) (Details) - USD ($) $ in Thousands		Sep. 30, 2015	Dec. 31, 2014
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Financing Receivable, Recorded Investment, Past Due		$ 318,607	$ 267,586
Financing Receivable, Recorded Investment, Current		39,794,516	39,796,072
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		166,927	104,491
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		151,680	163,095
Loans and Leases Receivable, Gross		40,113,123	40,063,658
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		34,857	29,228
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	193,883	154,778
Commercial		78,180	104,942
Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Commercial Real Estate		81,012	118,217
Consumer		12,204	17,910
Outstanding balance		171,396	241,069
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Carrying Amount, Net		133,221	179,299
ALLL		1,205	2,800
Carrying amount, net		132,016	176,499
Commercial and Industrial Sector [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Financing Receivable, Recorded Investment, Past Due		125,629	70,224
Financing Receivable, Recorded Investment, Current		12,909,622	13,092,731
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		79,246	28,295
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		46,383	41,929
Loans and Leases Receivable, Gross		13,035,251	13,162,955
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		4,951	4,677
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	90,584	64,385
Finance Leases Portfolio Segment [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Financing Receivable, Recorded Investment, Past Due		3,710	250
Financing Receivable, Recorded Investment, Current		423,071	408,724
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		3,557	225
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		153	25
Loans and Leases Receivable, Gross		426,781	408,974
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	55	270
Owner Occupied [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Financing Receivable, Recorded Investment, Past Due		63,974	75,706
Financing Receivable, Recorded Investment, Current		7,077,386	7,275,842
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		33,198	29,182
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		30,776	46,524
Loans and Leases Receivable, Gross		7,141,360	7,351,548
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		5,443	3,334
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	46,283	39,649
Municipal [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Financing Receivable, Recorded Investment, Past Due		48	0
Financing Receivable, Recorded Investment, Current		600,210	520,887
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		48	0
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		0	0
Loans and Leases Receivable, Gross		600,258	520,887
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	967	1,056
Commercial Loan [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Financing Receivable, Recorded Investment, Past Due		193,361	146,180
Financing Receivable, Recorded Investment, Current		21,010,289	21,298,184
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		116,049	57,702
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		77,312	88,478
Loans and Leases Receivable, Gross		21,203,650	21,444,364
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		10,394	8,011
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	137,889	105,360
Commercial Real Estate [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Financing Receivable, Recorded Investment, Past Due		18,272	14,202
Financing Receivable, Recorded Investment, Current		2,195,193	1,972,206
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		12,447	2,711
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		5,825	11,491
Loans and Leases Receivable, Gross		2,213,465	1,986,408
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		2,296	92
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	10,914	12,481
Term [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Financing Receivable, Recorded Investment, Past Due		49,335	43,660
Financing Receivable, Recorded Investment, Current		8,039,923	8,082,940
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		15,578	14,415
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		33,757	29,245
Loans and Leases Receivable, Gross		8,089,258	8,126,600
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		20,503	19,700
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	23,188	13,787
Commercial Real Estate [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Financing Receivable, Recorded Investment, Past Due		67,607	57,862
Financing Receivable, Recorded Investment, Current		10,235,116	10,055,146
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		28,025	17,126
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		39,582	40,736
Loans and Leases Receivable, Gross		10,302,723	10,113,008
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		22,799	19,792
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	34,102	26,268
Home Equity Line of Credit [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Financing Receivable, Recorded Investment, Past Due		10,321	11,183
Financing Receivable, Recorded Investment, Current		2,336,740	2,309,967
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		4,694	4,503
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		5,627	6,680
Loans and Leases Receivable, Gross		2,347,061	2,321,150
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		0	1
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	2,592	1,779
One Through Four Family Residential [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Financing Receivable, Recorded Investment, Past Due		37,835	37,272
Financing Receivable, Recorded Investment, Current		5,231,005	5,163,610
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		10,137	12,416
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		27,698	24,856
Loans and Leases Receivable, Gross		5,268,840	5,200,882
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		877	318
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	18,739	20,599
Construction And Other Consumer Real Estate [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Financing Receivable, Recorded Investment, Past Due		5,732	10,819
Financing Receivable, Recorded Investment, Current		364,283	359,723
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		5,524	9,675
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		208	1,144
Loans and Leases Receivable, Gross		370,015	370,542
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		0	160
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	401	608
Revolving Credit Facility [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Financing Receivable, Recorded Investment, Past Due		2,808	3,470
Financing Receivable, Recorded Investment, Current		425,041	397,882
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		1,621	2,425
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		1,187	1,045
Loans and Leases Receivable, Gross		427,849	401,352
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		787	946
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	114	80
Consumer Portfolio Segment [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Financing Receivable, Recorded Investment, Past Due		943	800
Financing Receivable, Recorded Investment, Current		192,042	211,560
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		877	644
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		66	156
Loans and Leases Receivable, Gross		192,985	212,360
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		0	0
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	46	84
Consumer Loan [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Financing Receivable, Recorded Investment, Past Due		57,639	63,544
Financing Receivable, Recorded Investment, Current		8,549,111	8,442,742
Financing Receivable Recorded Investment Thirty To Eighty Nine Days Past Due		22,853	29,663
Financing Receivable Recorded Investments, Equal To and Greater Than 90 Days Past Due		34,786	33,881
Loans and Leases Receivable, Gross		8,606,750	8,506,286
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing		1,664	1,425
Financing Receivable, Recorded Investment, Nonaccrual Status	[1]	$ 21,892	$ 23,150
[1]	Represents nonaccrual loans that are not past due more than 30 days; however, full payment of principal and interest is still not expected.

Loans And Allowance For Credi56

Loans And Allowance For Credit Losses (Schedule Of Changes In The Accretable Yield For PCI Loans) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Loans And Allowance For Credit Losses [Abstract]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	$ (7,535)	$ (10,279)	$ (28,792)	$ (46,767)
Changes in Accretable Yield [Roll Forward]
Balance at beginning of period	46,702	60,834	45,055	77,528
Disposals and other	1,126	(38)	6,170	5,305
Balance at end of period	41,298	53,472	41,298	53,472
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference	$ 1,005	$ 2,955	$ 18,865	$ 17,406

Derivative Instruments And He57

Derivative Instruments And Hedging Activities (Narrative) (Details) - USD ($)		3 Months Ended				9 Months Ended
		Sep. 30, 2015		Sep. 30, 2014		Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net		$ 17,343,000		$ (845,000)		$ 21,172,000	$ 1,681,000
Derivative Instruments in Hedges, Net Investment in Foreign Operations, Assets, Fair Value		0				0
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net		2,957,000		770,000		5,191,000	1,698,000
Fair values of derivative assets reduced (increased) by net credit valuation adjustments		3,000,000		1,700,000		3,000,000	1,700,000
Fair values of derivative liabilities reduced (increased) by net credit valuation adjustments				300,000			300,000
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Future Expected						11,600,000
Total derivatives, Notional amount		4,966,012,000				4,966,012,000		$ 3,488,773,000
Cash collateral pledged for derivative liabilities		61,000,000				61,000,000
Additional collateral that would be required to be pledge if credit rating was downgraded by one notch		1,900,000				1,900,000
Derivative Instrument, Noninterest Income (Expense)		3,446,000		3,662,000		12,269,000	(1,095,000)
Derivatives Designated As Hedging Instrument Offset To Interest Expense		$ 431,000		496,000		$ 1,364,000	1,822,000
Cash Flow Hedging [Member]
Derivative [Line Items]
Derivative Instrument, Noninterest Income (Expense)	[1]
Derivatives Designated As Hedging Instruments [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net		$ 17,343,000		(845,000)		$ 21,172,000	1,681,000
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net		2,957,000		770,000		5,191,000	1,698,000
Total derivatives, Notional amount		$ 1,387,500,000				$ 1,387,500,000		275,000,000
Derivative Instrument, Noninterest Income (Expense)
Derivatives Designated As Hedging Instrument Offset To Interest Expense		$ 431,000		496,000		$ 1,364,000	1,822,000
Derivatives Designated As Hedging Instruments [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net	[1]	17,343,000		(845,000)		21,172,000	1,681,000
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net	[1]	2,957,000		770,000		5,191,000	1,698,000
Derivatives Designated As Hedging Instruments [Member] | Cash Flow Hedging [Member] | Interest Rate Swaps [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion, Net		17,343,000		(845,000)		21,172,000	1,681,000
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net		2,957,000	[1]	770,000	[1]	5,191,000	1,698,000
Total derivatives, Notional amount		1,387,500,000				1,387,500,000		275,000,000
Derivatives Designated As Hedging Instruments [Member] | Fair Value Hedging [Member] | Terminated Swaps On Long Term Debt [Member]
Derivative [Line Items]
Derivatives Designated As Hedging Instrument Offset To Interest Expense		431,000		496,000		1,364,000	1,822,000
Derivatives Not Designated As Hedging Instruments [Member]
Derivative [Line Items]
Total derivatives, Notional amount		3,578,512,000				3,578,512,000		3,213,773,000
Derivative Instrument, Noninterest Income (Expense)		3,446,000		3,662,000		12,269,000	(1,095,000)
Derivatives Not Designated As Hedging Instruments [Member] | Interest Rate Swaps [Member]
Derivative [Line Items]
Derivative Instrument, Noninterest Income (Expense)				1,000			355,000
Derivatives Not Designated As Hedging Instruments [Member] | Total Return Swap [Member]
Derivative [Line Items]
Derivative Instrument, Noninterest Income (Expense)				0			(7,894,000)
Derivatives Not Designated As Hedging Instruments [Member] | Interest Rate Swaps For Customers [Member]
Derivative [Line Items]
Total derivatives, Notional amount		3,237,694,000				3,237,694,000		2,770,052,000
Derivative Instrument, Noninterest Income (Expense)		939,000		1,419,000		5,329,000	493,000
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange [Member]
Derivative [Line Items]
Total derivatives, Notional amount		340,818,000				340,818,000		443,721,000
Derivative Instrument, Noninterest Income (Expense)		2,506,000		$ 2,242,000		6,938,000	$ 5,951,000
Other Liabilities [Member]
Derivative [Line Items]
Derivative Liability, Fair Value, Gross Liability		86,363,000				86,363,000		66,064,000
Other Liabilities [Member] | Derivatives Designated As Hedging Instruments [Member]
Derivative [Line Items]
Derivative Liability, Fair Value, Gross Liability		0				0		123,000
Other Liabilities [Member] | Derivatives Designated As Hedging Instruments [Member] | Cash Flow Hedging [Member] | Interest Rate Swaps [Member]
Derivative [Line Items]
Derivative Liability, Fair Value, Gross Liability		0				0		123,000
Other Liabilities [Member] | Derivatives Not Designated As Hedging Instruments [Member]
Derivative [Line Items]
Derivative Liability, Fair Value, Gross Liability		86,363,000				86,363,000		65,941,000
Other Liabilities [Member] | Derivatives Not Designated As Hedging Instruments [Member] | Interest Rate Swaps For Customers [Member]
Derivative [Line Items]
Derivative Liability, Fair Value, Gross Liability		69,991,000				69,991,000		50,669,000
Other Liabilities [Member] | Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange [Member]
Derivative [Line Items]
Derivative Liability, Fair Value, Gross Liability		16,372,000				16,372,000		15,272,000
Other Liabilities [Member] | Derivative Financial Instruments, Liabilities [Member]
Derivative [Line Items]
Gross amounts recognized		$ 86,363,000				$ 86,363,000		$ 66,064,000
[1]	Amounts recognized in OCI and reclassified from AOCI represent the effective portion of the derivative gain.

Derivative Instruments And He58

Derivative Instruments And Hedging Activities (Schedule Of Notional Amounts And Recorded Gross Fair Values And Related Gain (Loss) Of Derivative Instruments) (Details) - USD ($) $ in Thousands		3 Months Ended				9 Months Ended
		Sep. 30, 2015		Sep. 30, 2014		Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Derivative [Line Items]
Total derivatives, Notional amount		$ 4,966,012				$ 4,966,012		$ 3,488,773
Amount of derivative gain (loss), recognized in OCI		17,343		$ (845)		21,172	$ 1,681
Amount of derivative gain (loss), Reclassified from AOCI to interest income		2,957		770		5,191	1,698
Derivatives instruments, Noninterest income (expense)		3,446		3,662		12,269	(1,095)
Derivatives designated as hedging instruments, Offset to interest expense		$ 431		496		$ 1,364	1,822
Cash Flow Hedging [Member]
Derivative [Line Items]
Derivatives instruments, Noninterest income (expense)	[1]
Other Assets [Member]
Derivative [Line Items]
Derivatives hedging instruments, assets		$ 103,119				$ 103,119		66,420
Other Liabilities [Member]
Derivative [Line Items]
Derivatives hedging instruments, liabilities		86,363				86,363		66,064
Derivatives Designated As Hedging Instruments [Member]
Derivative [Line Items]
Total derivatives, Notional amount		1,387,500				1,387,500		275,000
Amount of derivative gain (loss), recognized in OCI		17,343		(845)		21,172	1,681
Amount of derivative gain (loss), Reclassified from AOCI to interest income		$ 2,957		770		$ 5,191	1,698
Derivatives instruments, Noninterest income (expense)
Derivatives designated as hedging instruments, Offset to interest expense		$ 431		496		$ 1,364	1,822
Derivatives Designated As Hedging Instruments [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Amount of derivative gain (loss), recognized in OCI	[1]	17,343		(845)		21,172	1,681
Amount of derivative gain (loss), Reclassified from AOCI to interest income	[1]	2,957		770		5,191	1,698
Derivatives Designated As Hedging Instruments [Member] | Other Assets [Member]
Derivative [Line Items]
Derivatives hedging instruments, assets		17,367				17,367		1,508
Derivatives Designated As Hedging Instruments [Member] | Other Liabilities [Member]
Derivative [Line Items]
Derivatives hedging instruments, liabilities		0				0		123
Derivatives Designated As Hedging Instruments [Member] | Interest Rate Swaps [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Total derivatives, Notional amount		1,387,500				1,387,500		275,000
Amount of derivative gain (loss), recognized in OCI		17,343		(845)		21,172	1,681
Amount of derivative gain (loss), Reclassified from AOCI to interest income		2,957	[1]	770	[1]	5,191	1,698
Derivatives Designated As Hedging Instruments [Member] | Interest Rate Swaps [Member] | Other Assets [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Derivatives hedging instruments, assets		17,367				17,367		1,508
Derivatives Designated As Hedging Instruments [Member] | Interest Rate Swaps [Member] | Other Liabilities [Member] | Cash Flow Hedging [Member]
Derivative [Line Items]
Derivatives hedging instruments, liabilities		0				0		123
Derivatives Designated As Hedging Instruments [Member] | Terminated Swaps On Long-Term Debt [Member] | Fair Value Hedges [Member]
Derivative [Line Items]
Derivatives designated as hedging instruments, Offset to interest expense		431		496		1,364	1,822
Derivatives Not Designated As Hedging Instruments [Member]
Derivative [Line Items]
Total derivatives, Notional amount		3,578,512				3,578,512		3,213,773
Derivatives instruments, Noninterest income (expense)		3,446		3,662		12,269	(1,095)
Derivatives Not Designated As Hedging Instruments [Member] | Other Assets [Member]
Derivative [Line Items]
Derivatives hedging instruments, assets		85,752				85,752		64,912
Derivatives Not Designated As Hedging Instruments [Member] | Other Liabilities [Member]
Derivative [Line Items]
Derivatives hedging instruments, liabilities		86,363				86,363		65,941
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange [Member]
Derivative [Line Items]
Total derivatives, Notional amount		340,818				340,818		443,721
Derivatives instruments, Noninterest income (expense)		2,506		2,242		6,938	5,951
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange [Member] | Other Assets [Member]
Derivative [Line Items]
Derivatives hedging instruments, assets		18,947				18,947		16,625
Derivatives Not Designated As Hedging Instruments [Member] | Foreign Exchange [Member] | Other Liabilities [Member]
Derivative [Line Items]
Derivatives hedging instruments, liabilities		16,372				16,372		15,272
Derivatives Not Designated As Hedging Instruments [Member] | Interest Rate Swaps [Member]
Derivative [Line Items]
Derivatives instruments, Noninterest income (expense)				1			355
Derivatives Not Designated As Hedging Instruments [Member] | Interest Rate Swaps For Customers [Member]
Derivative [Line Items]
Total derivatives, Notional amount		3,237,694				3,237,694		2,770,052
Derivatives instruments, Noninterest income (expense)		939		1,419		5,329	493
Derivatives Not Designated As Hedging Instruments [Member] | Interest Rate Swaps For Customers [Member] | Other Assets [Member]
Derivative [Line Items]
Derivatives hedging instruments, assets		66,805				66,805		48,287
Derivatives Not Designated As Hedging Instruments [Member] | Interest Rate Swaps For Customers [Member] | Other Liabilities [Member]
Derivative [Line Items]
Derivatives hedging instruments, liabilities		69,991				69,991		$ 50,669
Derivatives Not Designated As Hedging Instruments [Member] | Future [Member]
Derivative [Line Items]
Derivatives instruments, Noninterest income (expense)		$ 1				$ 2
Derivatives Not Designated As Hedging Instruments [Member] | Total Return Swap [Member]
Derivative [Line Items]
Derivatives instruments, Noninterest income (expense)				$ 0			$ (7,894)
[1]	Amounts recognized in OCI and reclassified from AOCI represent the effective portion of the derivative gain.

Debt And Shareholders' Equity59

Debt And Shareholders' Equity (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	9 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Debt And Shareholders' Equity [Line Items]
Subordinate notes redeemed at maturity	$ 122,000	$ 109,000
Schedule of Long-term Debt Instruments [Table Text Block]				Long-term debt is summarized as follows: (In thousands) September 30, December 31, 2014 Junior subordinated debentures related to trust preferred securities $ 164,950 $ 168,043 Convertible subordinated notes 70,119 132,838 Subordinated notes 302,102 335,798 Senior notes 406,631 432,385 FHLB advances — 22,156 Capital lease obligations 950 1,062 Total $ 944,752 $ 1,092,282
Junior Subordinated Notes		164,950		$ 164,950		$ 168,043
Convertible Subordinated Debt		70,119		70,119		132,838
Subordinated Debt		302,102		302,102		335,798
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax				28,433	$ 101,401
Stockholders' Equity [Abstract]
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax				82,633	$ (20,227)
Senior Notes		406,631		406,631		432,385
Federal Home Loan Bank Advances, Redeemed			$ 22,000
Capital Lease Obligations		950		950		1,062
Long-term Debt, Gross		$ 944,752		$ 944,752		$ 1,092,282
Trust Preferred Securities, Redeemed			3,100
Preferred Stock, Tender Offer	$ 180,000
Senior medium-term notes, optional early redemptions in 2015 [Member]
Debt And Shareholders' Equity [Line Items]
Long-term Senior notes redeemed			$ 27,000

Debt And Shareholders' Equity60

Debt And Shareholders' Equity (Schedule Of Changes In Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Debt And Shareholders' Equity [Line Items]
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, Tax			$ 65,549	$ 61,714
Interest income expense, net, after tax	$ 84,238	$ 79,127	158,417	259,807
Income Tax Expense (Benefit)	40,780	53,109	97,455	179,202
Interest Income (Expense), Net	425,377	416,819	1,266,427	1,249,573
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	0	0	0	27
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			28,433	101,401
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			82,633	(20,227)
Beginning balance			(128,041)	(192,101)
Other comprehensive income (loss)	18,197	25,910	111,066	81,174
Ending balance	(16,975)	(110,927)	(16,975)	(110,927)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax			6,311	(214)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Tax			0	0
Other Comprehensive Income (Loss), Tax			71,860	61,500
Accumulated Net Unrealized Investment Gain (Loss) [Member]
Debt And Shareholders' Equity [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			15,398	100,723
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			85,845	(19,206)
Beginning balance			(91,921)	(168,805)
Other comprehensive income (loss)			101,243	81,517
Ending balance	9,322	(87,288)	9,322	(87,288)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Debt And Shareholders' Equity [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			13,035	678
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			(3,212)	(1,021)
Beginning balance			2,226	1,556
Other comprehensive income (loss)			9,823	(343)
Ending balance	12,049	1,213	12,049	1,213
Accumulated Defined Benefit Plans Adjustment [Member]
Debt And Shareholders' Equity [Line Items]
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			0	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			0	0
Beginning balance			(38,346)	(24,852)
Other comprehensive income (loss)			0	0
Ending balance	(38,346)	(24,852)	(38,346)	(24,852)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Debt And Shareholders' Equity [Line Items]
Gain (Loss) on Investments, Excluding Other than Temporary Impairments	(53)	(13,901)	(138,728)	22,039
Interest income expense, net, after tax	0	0	0	(17)
Income Tax Expense (Benefit)	0	0	0	(10)
Other than temporary impairment losses investments accretion of noncreidt portion held to maturity securities, after tax	(33)	(8,162)	(85,845)	19,206
Other than temporary impairment losses investments accretion of noncredit portion held to maturity securities, tax	0	191	0	576
Other than Temporary Impairment Losses, Investments, Accretion of Noncredit Portion, Held-to-maturity Securities, before Tax	0	(467)	0	(1,411)
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	0	0	0	(27)
Interest Rate Contract [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Debt And Shareholders' Equity [Line Items]
Interest income expense, net, after tax	1,830	463	3,212	1,021
Income Tax Expense (Benefit)	1,127	307	1,979	677
Interest Income (Expense), Net	2,957	770	5,191	1,698
Fixed income securities gain loss [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Unrealized Investment Gain (Loss) [Member]
Debt And Shareholders' Equity [Line Items]
Interest income expense, net, after tax	(33)	(7,886)	(85,845)	20,058
Income Tax Expense (Benefit)	$ (20)	$ (6,015)	$ (52,883)	$ 1,981

Debt And Shareholders' Equity61

Debt And Shareholders' Equity Schedule of Long-Term Debt Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Junior Subordinated Notes	$ 164,950	$ 168,043
Convertible Subordinated Debt	70,119	132,838
Subordinated Debt	302,102	335,798
Senior Notes	406,631	432,385
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances	0	22,156
Capital Lease Obligations	950	1,062
Long-term Debt, Gross	$ 944,752	$ 1,092,282

Debt And Shareholders' Equity D

Debt And Shareholders' Equity Debt Disclosures (Details) $ in Millions	6 Months Ended
	Jun. 30, 2015USD ($)
Debt Instrument, Redemption [Line Items]
Trust Preferred Securities, Redeemed	$ 3.1
Federal Home Loan Bank Advances, Redeemed	22
Debt extinguishment early tender premiums	2.4
Senior medium-term notes, optional early redemptions in 2015 [Member]
Debt Instrument, Redemption [Line Items]
Long-term Senior notes redeemed	$ 27

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, Percent	28.76%	35.64%	32.01%	36.14%
Deferred Tax Assets, Net	$ 201		$ 201		$ 224

Fair Value (Narrative) (Details

Fair Value (Narrative) (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	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Other noninterest-bearing investments valued under the cost method	$ 28,700		$ 28,700		$ 39,100
Federal Home Loan Bank Stock and Federal Reserve Bank Stock	220,200		220,200		250,700
Net gains on sale of OREO properties	40	$ (875)	111	$ (2,216)
Principal amount of other real estate owned property sold			13,100	30,700
OREO Properties [Member]
Derivatives, Fair Value [Line Items]
Net gains on sale of OREO properties	800	$ 1,900	2,700	4,400
Impairment of OREO properties			(400)	$ (500)
Level 2 [Member]
Derivatives, Fair Value [Line Items]
Fair value of AFS securities	5,981,502		5,981,502		3,336,943
Level 3 [Member]
Derivatives, Fair Value [Line Items]
Fair value of AFS securities	0		0		$ 401,957
Third Party Pricing Service [Member] | Level 2 [Member]
Derivatives, Fair Value [Line Items]
Fair value of AFS securities	$ 0		$ 0
Trust Preferred Predominantly Banks [Member] | Minimum [Member]
Derivatives, Fair Value [Line Items]
Significant Unobservable Inputs, Loss Given Deferral Rate			11.90%		14.50%
Discount Rate Range Of Libor Utilized For Fair Value Purposes			3.70%		3.40%
Trust Preferred Predominantly Banks [Member] | Maximum [Member]
Derivatives, Fair Value [Line Items]
Significant Unobservable Inputs, Loss Given Deferral Rate			100.00%		100.00%
Discount Rate Range Of Libor Utilized For Fair Value Purposes			5.40%		5.60%
Constant Prepayment Rate Until Maturity [Member] | Trust Preferred Predominantly Banks [Member]
Derivatives, Fair Value [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed			2.00%		2.00%

Fair Value (Schedule Of Assets

Fair Value (Schedule Of Assets And Liabilities Measured At Fair Value By Class On A Recurring Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Trading account	$ 73,521	$ 70,601
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	5,981,502	3,336,943
Trading account	73,521	70,601
Total assets	6,622,297	3,933,629
Securities sold, not yet purchased	0	0
Total liabilities	70,236	50,966
Level 2 [Member] | Mutual Funds And Other [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	3,355	30,275
Level 2 [Member] | Bank-owned life insurance [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other noninterest-bearing investments	$ 482,199	$ 476,290
Level 2 [Member] | Private Equity [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other noninterest-bearing investments
Level 2 [Member] | Available-for-sale Securities [Member] | U.S. Treasury, Agencies And Corporations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	$ 5,741,982	$ 3,098,208
Level 2 [Member] | Available-for-sale Securities [Member] | Municipal Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	213,398	185,093
Level 2 [Member] | Available-for-sale Securities [Member] | Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	22,767
Level 2 [Member] | Asset-Backed Securities [Member] | Banks, Trust and Insurance, Equities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure		22,701
Level 2 [Member] | Asset-Backed Securities [Member] | Other (Including ABS CDOs) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure		666
Level 2 [Member] | Derivatives [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	85,075	49,795
Other Liabilities, Fair Value Disclosure	70,236	50,966
Level 2 [Member] | Derivatives [Member] | Interest Rate Related And Other [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	18,270	1,508
Other Liabilities, Fair Value Disclosure	245	297
Level 2 [Member] | Derivatives [Member] | Interest Rate Swaps [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	66,805	48,287
Other Liabilities, Fair Value Disclosure	69,991	50,669
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	0	401,957
Total assets	133,356	514,049
Securities sold, not yet purchased	0	0
Other Liabilities, Fair Value Disclosure		13
Total liabilities	0	13
Level 3 [Member] | Private Equity [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other noninterest-bearing investments	120,195	99,865
Level 3 [Member] | Interest-Only-Strip [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	13,161	12,227
Level 3 [Member] | Available-for-sale Securities [Member] | U.S. Treasury, Agencies And Corporations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	$ 0	0
Level 3 [Member] | Available-for-sale Securities [Member] | Municipal Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure		4,164
Level 3 [Member] | Asset-Backed Securities [Member] | Banks, Trust and Insurance, Equities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure		393,007
Level 3 [Member] | Asset-Backed Securities [Member] | Auction Rate Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure		4,761
Level 3 [Member] | Asset-Backed Securities [Member] | Other (Including ABS CDOs) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure		25
Level 3 [Member] | Derivatives [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	$ 0	0
Other Liabilities, Fair Value Disclosure	0	0
Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	6,000,011	3,844,248
Trading account	73,521	70,601
Total assets	6,876,812	4,658,529
Securities sold, not yet purchased	29,566	24,230
Other Liabilities, Fair Value Disclosure		13
Total liabilities	199,877	179,359
Estimate of Fair Value Measurement [Member] | Mutual Funds And Other [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	21,864	135,623
Estimate of Fair Value Measurement [Member] | Bank-owned life insurance [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other noninterest-bearing investments	482,199	476,290
Estimate of Fair Value Measurement [Member] | Private Equity [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other noninterest-bearing investments	120,195	99,865
Estimate of Fair Value Measurement [Member] | Interest-Only-Strip [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	13,161	12,227
Estimate of Fair Value Measurement [Member] | Available-for-sale Securities [Member] | U.S. Treasury, Agencies And Corporations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	5,741,982	3,098,208
Estimate of Fair Value Measurement [Member] | Available-for-sale Securities [Member] | Municipal Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	213,398	189,257
Estimate of Fair Value Measurement [Member] | Available-for-sale Securities [Member] | Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	22,767
Estimate of Fair Value Measurement [Member] | Asset-Backed Securities [Member] | Banks, Trust and Insurance, Equities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure		415,708
Estimate of Fair Value Measurement [Member] | Asset-Backed Securities [Member] | Auction Rate Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure		4,761
Estimate of Fair Value Measurement [Member] | Asset-Backed Securities [Member] | Other [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure		691
Estimate of Fair Value Measurement [Member] | Derivatives [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	104,022	66,420
Other Liabilities, Fair Value Disclosure	86,608	66,238
Estimate of Fair Value Measurement [Member] | Derivatives [Member] | Interest Rate Related And Other [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	18,270	1,508
Other Liabilities, Fair Value Disclosure	245	297
Estimate of Fair Value Measurement [Member] | Derivatives [Member] | Interest Rate Swaps [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	66,805	48,287
Other Liabilities, Fair Value Disclosure	69,991	50,669
Estimate of Fair Value Measurement [Member] | Derivatives [Member] | Foreign Currency Exchange Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	18,947	16,625
Other Liabilities, Fair Value Disclosure	16,372	15,272
Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	18,509	105,348
Total assets	121,159	210,851
Securities sold, not yet purchased	29,566	24,230
Total liabilities	129,641	128,380
Fair Value, Inputs, Level 1 [Member] | Mutual Funds And Other [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	18,509	105,348
Fair Value, Inputs, Level 1 [Member] | Available-for-sale Securities [Member] | U.S. Treasury, Agencies And Corporations [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 1 [Member] | Derivatives [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	18,947	16,625
Other Liabilities, Fair Value Disclosure	16,372	15,272
Fair Value, Inputs, Level 1 [Member] | Derivatives [Member] | Foreign Currency Exchange Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	18,947	16,625
Other Liabilities, Fair Value Disclosure	$ 16,372	$ 15,272

Fair Value (Schedule Of Key Mod

Fair Value (Schedule Of Key Model Inputs And Assumptions Used To Fair Value Certain Asset-Backed Securities) (Details) - Trust Preferred Predominantly Banks [Member]	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Asset-Backed Securities [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Loss severity	100.00%	100.00%
Constant Default Rate Year 1 [Member] | Minimum [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Constant default rate	0.30%	0.30%
Constant Default Rate Year 1 [Member] | Maximum [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Constant default rate	0.50%	0.80%
Constant Default Rate Year 2 to 5 [Member] | Minimum [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Constant default rate	0.50%	0.50%
Constant Default Rate Year 2 to 5 [Member] | Maximum [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Constant default rate	0.70%	0.90%
Constant Default Rate Year 6 to Maturity [Member] | Minimum [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Constant default rate	0.60%	0.60%
Constant Default Rate Year 6 to Maturity [Member] | Maximum [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Asset-backed securities, Constant default rate	0.70%	0.70%
Constant Default Rate Until 2016 [Member] | Minimum [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed
Constant Default Rate Until 2016 [Member] | Maximum [Member]
Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed

Fair Value (Schedule Of Asset67

Fair Value (Schedule Of Assets And Liabilities Measured At Fair Value By Class On A Recurring Basis Using Level 3 Inputs) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Total net gains (losses) included in, Other noninterest expense	$ 56,298	$ 66,738	$ 168,076	$ 206,353
Municipal Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets, Beginning balance	$ 0	10,038	4,164	10,662
Total net gains (losses) included in, Accretion of purchase discount on securities available-for-sale		9	3	27
Total net gains (losses) included in, Fixed income securities gains (losses), net		2	(344)	18
Total net gains (losses) included in, Other comprehensive income (loss)		4	687	(178)
Total net gains (losses) included in, Sales			2,651
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements		(125)	(1,859)	(601)
Fair value of assets, Ending balance	$ 0	9,928	0	9,928
Banks, Trust and Insurance, Equities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets, Beginning balance	$ 0	685,805	393,007	1,238,820
Total net gains (losses) included in, Accretion of purchase discount on securities available-for-sale		480	471	1,833
Total net gains (losses) included in, Fixed income securities gains (losses), net		(13,956)	(136,691)	9,009
Total net gains (losses) included in, Other noninterest expense			57,308
Total net gains (losses) included in, Other comprehensive income (loss)		45,521	141,547	146,861
Total net gains (losses) included in, Sales		155,869	440,055	702,257
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements		(36,511)	(15,587)	(99,603)
Fair value of assets, Ending balance	$ 0	525,470	0	525,470
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3				69,193
Trust Preferred Securities - Real Estate Investment Trusts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets, Beginning balance		$ 0		$ 22,996
Total net gains (losses) included in, Accretion of purchase discount on securities available-for-sale
Total net gains (losses) included in, Fixed income securities gains (losses), net				$ 1,399
Total net gains (losses) included in, Other comprehensive income (loss)
Total net gains (losses) included in, Sales				$ 24,395
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements
Fair value of assets, Ending balance		$ 0		$ 0
Auction Rate Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets, Beginning balance		6,578		6,599
Total net gains (losses) included in, Accretion of purchase discount on securities available-for-sale		1		3
Total net gains (losses) included in, Fixed income securities gains (losses), net		37		37
Total net gains (losses) included in, Other comprehensive income (loss)		48		25
Total net gains (losses) included in, Sales		$ 950		950
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements
Fair value of assets, Ending balance		$ 5,714		5,714
Other Asset-Backed [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets, Beginning balance	$ 0	$ 28	4,761	$ 25,800
Total net gains (losses) included in, Accretion of purchase discount on securities available-for-sale
Total net gains (losses) included in, Fixed income securities gains (losses), net			(606)	$ 10,917
Total net gains (losses) included in, Other comprehensive income (loss)			(74)	(15)
Total net gains (losses) included in, Sales		$ 1	$ 4,081	36,670
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements				(5)
Fair value of assets, Ending balance	$ 0	$ 27	$ 0	27
Private Equity Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets, Beginning balance	110,115	82,256	97,649	82,410
Total net gains (losses) included in, Dividends and other investment income	(620)	1,451	(1,179)	(1,296)
Total net gains (losses) included in, Equity securities gains, net	3,587	(3,684)	7,554	(3,100)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases	8,184	4,438	20,498	12,898
Total net gains (losses) included in, Sales	(126)	(476)	(2,634)	(1,315)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	(945)	(100)	(1,693)	(5,712)
Fair value of assets, Ending balance	120,195	83,885	120,195	83,885
Servicing Contracts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of liabilities, Beginning balance	13,502	11,461	12,227	8,852
Total net gains (losses) included in, Fixed income securities gains (losses), net			1,112
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Noninterest Income	(375)	139		665
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases	234	531	615	2,987
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements	(200)	(213)	(793)	(586)
Fair value of liabilities, Ending balance	13,161	11,918	13,161	11,918
Derivatives [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of liabilities, Beginning balance	$ 0	(132)	(13)	(4,303)
Derivative, Gain (Loss) on Derivative, Net				(7,894)
Total net gains (losses) included in, Other noninterest expense		$ 65		174
Total net gains (losses) included in, Purchases				11,956
Fair value of liabilities, Ending balance	$ 0	$ (67)	0	$ (67)
Fair Value, Assets Measured On Recurring Basis, And Gain (Loss) Included In Net Impairment Losses On Investment Securities			13
Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Liabilities, Fair Value Disclosure					$ 13
Other Postretirement Benefits, Individual Contracts, Type of Deferred Compensation [Domain] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	83,703		83,703		88,878
Other Liabilities, Fair Value Disclosure	83,703		83,703		88,878
Other Postretirement Benefits, Individual Contracts, Type of Deferred Compensation [Domain] | Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	83,703		83,703		88,878
Other Liabilities, Fair Value Disclosure	$ 83,703		$ 83,703		$ 88,878

Fair Value (Schedule Of Realize

Fair Value (Schedule Of Realized Gains (Losses) Using Level 3 Inputs) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Dividends and Other Investment Income (Loss) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Realized gains (losses) from Level 3 inputs	$ (6)	$ 0	$ (2)	$ 34
Fixed Income Securities Gains (Losses), Net [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Realized gains (losses) from Level 3 inputs	0	(13,917)	(137,641)	21,380
Level 3 Equity Securities Gains (Losses), Net [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Realized gains (losses) from Level 3 inputs	(10,637)	0	(11,311)	0
US States and Political Subdivisions Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Assets Measured On Recurring Basis And Gain Loss Included In Fixed Income Securities Gains (Losses), Net		2	(344)	18
Fair Value, Assets Measured On Recurring Basis, And Gain (Loss) Included In Accretion Of Purchase Discount On Securities Available-For-Sale		$ 9	3	27
Trust Preferred Securities Real Estate Investment Trusts [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Assets Measured On Recurring Basis And Gain Loss Included In Fixed Income Securities Gains (Losses), Net				$ 1,399
Fair Value, Assets Measured On Recurring Basis, And Gain (Loss) Included In Accretion Of Purchase Discount On Securities Available-For-Sale
Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Liabilities, Fair Value Disclosure					$ 13
Estimate of Fair Value Measurement [Member] | Other Postretirement Benefits, Individual Contracts, Type of Deferred Compensation [Domain]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Assets, Fair Value Disclosure	83,703		83,703		88,878
Other Liabilities, Fair Value Disclosure	$ 83,703		$ 83,703		$ 88,878

Fair Value Fair Value (Summary

Fair Value Fair Value (Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Minimum [Member] | Trust Preferred Predominantly Banks [Member] | Constant Default Rate Until 2016 [Member]
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed
Minimum [Member] | Trust Preferred Predominantly Banks [Member] | Constant Default Rate Year 1 [Member]
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	0.30%	0.30%
Minimum [Member] | Trust Preferred Predominantly Banks [Member] | Constant Default Rate Year 2 to 5 [Member]
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	0.50%	0.50%
Minimum [Member] | Trust Preferred Predominantly Banks [Member] | Constant Default Rate Year 6 to Maturity [Member]
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	0.60%	0.60%
Maximum [Member] | Trust Preferred Predominantly Banks [Member] | Constant Default Rate Until 2016 [Member]
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Prepayment Speed
Maximum [Member] | Trust Preferred Predominantly Banks [Member] | Constant Default Rate Year 1 [Member]
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	0.50%	0.80%
Maximum [Member] | Trust Preferred Predominantly Banks [Member] | Constant Default Rate Year 2 to 5 [Member]
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	0.70%	0.90%
Maximum [Member] | Trust Preferred Predominantly Banks [Member] | Constant Default Rate Year 6 to Maturity [Member]
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]
Assumption For Fair Value Of Assets Or Liabilities Constant Default Rate	0.70%	0.70%
Asset-Backed Securities [Member] | Trust Preferred Predominantly Banks [Member]
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]
Assumption for Fair Value of Assets or Liabilities that relate to Transferor's Continuing Involvement, Static Pool Losses	100.00%	100.00%
Level 3 [Member]
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]
Investments, Fair Value Disclosure	$ 0	$ 401,957
Level 3 [Member] | Trust Preferred Predominantly Banks [Member] | Asset-Backed Securities [Member]
Summary of Quantitative Information Relating to the Principal Valuation Techniques and Significant Unobservable Inputs for Level 3 [Line Items]
Investments, Fair Value Disclosure		$ 393,007

Fair Value (Schedule Of Asset70

Fair Value (Schedule Of Assets With Fair Value Changes On Nonrecurring Basis) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Principal amount of other real estate owned property sold			$ 13,100	$ 30,700
Gains (losses) from fair value changes	$ (8,856)	$ (4,234)	(17,468)	(18,883)
HTM Securities Adjusted For OTTI [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Gains (losses) from fair value changes	0	0	0	(27)
Impaired Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Gains (losses) from fair value changes	(7,666)	(807)	(12,682)	(12,126)
Private Equity Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Gains (losses) from fair value changes	(625)	(339)	(2,903)	(471)
Other Real Estate Owned [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Gains (losses) from fair value changes	(565)	$ (3,088)	(1,883)	$ (6,259)
Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets measured on nonrecurring basis	0		0		$ 0
Fair Value, Inputs, Level 1 [Member] | Impaired Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets measured on nonrecurring basis	0		0		0
Fair Value, Inputs, Level 1 [Member] | Private Equity Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets measured on nonrecurring basis	0		0		0
Fair Value, Inputs, Level 1 [Member] | Other Real Estate Owned [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets measured on nonrecurring basis	0		0		0
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets measured on nonrecurring basis	16,640		16,640		24,608
Level 2 [Member] | Impaired Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets measured on nonrecurring basis	14,419		14,419		16,574
Level 2 [Member] | Private Equity Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets measured on nonrecurring basis	0		0		0
Level 2 [Member] | Other Real Estate Owned [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets measured on nonrecurring basis	2,221		2,221		8,034
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets measured on nonrecurring basis	2,974		2,974		23,454
Level 3 [Member] | Impaired Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets measured on nonrecurring basis	0		0		0
Level 3 [Member] | Private Equity Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets measured on nonrecurring basis	2,974		2,974		23,454
Level 3 [Member] | Other Real Estate Owned [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets measured on nonrecurring basis	0		0		0
Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets measured on nonrecurring basis	19,614		19,614		48,062
Estimate of Fair Value Measurement [Member] | Impaired Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets measured on nonrecurring basis	14,419		14,419		16,574
Estimate of Fair Value Measurement [Member] | Private Equity Investments [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets measured on nonrecurring basis	2,974		2,974		23,454
Estimate of Fair Value Measurement [Member] | Other Real Estate Owned [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value of assets measured on nonrecurring basis	$ 2,221		$ 2,221		$ 8,034

Fair Value (Schedule Of Carryin

Fair Value (Schedule Of Carrying Values And Estimated Fair Values Of Financial Instruments) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Estimate Not Practicable, Financial Statement Captions [Line Items]
Held-to-maturity, fair value	$ 553,088	$ 677,196
Time deposits	2,216,206	2,406,924
Long-term debt (less fair value hedges)	944,752	1,092,282
Carrying Value [Member]
Fair Value, Estimate Not Practicable, Financial Statement Captions [Line Items]
Held-to-maturity, fair value	544,168	647,252
Loans and leases (including loans held for sale), net of allowance	39,655,805	39,591,499
Time deposits	2,216,206	2,406,924
Foreign deposits	441,560	328,391
Long-term debt (less fair value hedges)	944,613	1,090,778
Estimate of Fair Value Measurement [Member]
Fair Value, Estimate Not Practicable, Financial Statement Captions [Line Items]
Held-to-maturity, fair value	553,088	677,196
Loans and leases (including loans held for sale), net of allowance	39,414,672	39,426,498
Time deposits	2,223,094	2,408,550
Foreign deposits	441,548	328,447
Long-term debt (less fair value hedges)	$ 975,642	$ 1,159,287

Commitments, Guarantees, And 72

Commitments, Guarantees, And Contingent Liabilities (Narrative) (Details) $ in Millions	Sep. 30, 2015USD ($)
Guarantor Obligations [Line Items]
Letters of credit, accrued liability	$ 15.2
Reserve for unfunded lending commitments	12
Deferred commitment fees	3.2
Guarantee of trust preferred securities issued by affiliated trusts	15
Commitments for Private Equity and Other Noninterest-bearing Investments	48
Range of possible loss, minimum	0
Range of possible loss, maximum	$ 50

Commitments, Guarantees, And 73

Commitments, Guarantees, And Contingent Liabilities (Schedule Of Guarantees Issued) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Liabilities for Guarantees on Long-Duration Contracts [Line Items]
Unused Commitments to Extend Credit	$ 16,969,127	$ 16,658,757
Commercial Letters Of Credit	77,874	32,144
Total Unfunded Lending Commitments	17,953,895	17,620,278
Financial [Member]
Liabilities for Guarantees on Long-Duration Contracts [Line Items]
Standby letters of credit	701,945	745,895
Performance [Member]
Liabilities for Guarantees on Long-Duration Contracts [Line Items]
Standby letters of credit	$ 204,949	$ 183,482

Retirement Plans (Schedule Of N

Retirement Plans (Schedule Of Net Periodic Benefit Cost (Credit) For Pension And Postretirement Plans) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	1,755	1,869	5,320	5,608
Expected return on plan assets	(3,090)	(3,326)	(9,270)	(9,979)
Amortization of net actuarial (gain) loss	1,297	735	4,445	2,206
Net periodic benefit cost (credit)	(38)	(722)	495	(2,165)
Supplemental Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0	0
Interest cost	101	113	302	340
Amortization of prior service cost (credit)	0	13	0	38
Amortization of net actuarial (gain) loss	31	5	92	14
Net periodic benefit cost (credit)	132	131	394	392
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	8	8	25	23
Interest cost	10	12	30	35
Amortization of prior service cost (credit)	0	0	0	0
Amortization of net actuarial (gain) loss	(13)	(18)	(40)	(53)
Net periodic benefit cost (credit)	$ 5	$ 2	$ 15	$ 5

Operating Segment Information75

Operating Segment Information (Details) $ in Thousands	3 Months Ended			6 Months Ended	9 Months Ended
	Sep. 30, 2015USD ($)BranchesBanks	Jun. 30, 2015USD ($)	Sep. 30, 2014USD ($)	Jun. 30, 2015USD ($)	Sep. 30, 2015USD ($)BranchesBanks	Sep. 30, 2014USD ($)
Segment Reporting Information [Line Items]
Realized Losses on Sales of CDOs				$ 137,000
Net interest income	$ 425,377		$ 416,819		$ 1,266,427	$ 1,249,573
Provision for loan losses	18,262		(54,643)		17,334	(109,669)
Net interest income after provision for loan losses	407,115		471,462		1,249,093	1,359,242
Other noninterest income	2,461		2,627		9,076	5,854
Noninterest expense	396,149		438,536		1,197,710	1,242,626
Income before income taxes	141,779		148,997		304,439	495,850
Income Tax Expense (Benefit)	40,780		53,109		97,455	179,202
Net income	$ 100,999		95,888		$ 206,984	316,648
Number of community/regional banks operating in distinct geographical areas | Banks	7				7
Zions Bank [Member]
Segment Reporting Information [Line Items]
Net interest income	$ 145,900		146,700		$ 431,200	434,800
Provision for loan losses	(5,700)		(27,700)		(18,700)	(51,800)
Net interest income after provision for loan losses	151,600		174,400		449,900	486,600
Other noninterest income	50,400		44,800		90,600	139,000
Noninterest expense	128,800		123,400		385,500	366,000
Income before income taxes	73,200		95,800		155,000	259,600
Income Tax Expense (Benefit)	26,400		35,400		54,400	95,400
Net income	46,800		60,400		100,600	164,200
Net Income (Loss) Attributable to Noncontrolling Interest	600		0		2,000	0
Net income (loss) applicable to controlling interest	46,200		60,400		98,600	164,200
Total assets	18,437,000		18,083,000		18,628,000	17,983,000
Average cash and due from banks	241,000		322,000		263,000	332,000
Average money market investments	2,064,000		3,083,000		2,664,000	3,101,000
Average Securities	3,211,000		1,814,000		2,827,000	1,720,000
Total loans	12,200,000		12,312,000		12,184,000	12,292,000
Total deposits	15,944,000		15,827,000		16,186,000	15,709,000
Preferred equity	280,000		280,000		280,000	280,000
Common equity	1,689,000		1,578,000		1,654,000	1,556,000
Noncontrolling interests	17,000		0		13,000	0
Total shareholders' equity	1,986,000		1,858,000		1,947,000	1,836,000
Amegy [Member]
Segment Reporting Information [Line Items]
Net interest income	99,900		95,800		291,600	285,900
Provision for loan losses	31,800		(3,500)		56,900	5,900
Net interest income after provision for loan losses	68,100		99,300		234,700	280,000
Other noninterest income	33,400		39,400		101,200	107,700
Noninterest expense	90,200		79,100		280,900	258,600
Income before income taxes	11,300		59,600		55,000	129,100
Income Tax Expense (Benefit)	3,500		20,400		17,200	43,600
Net income	7,800		39,200		37,800	85,500
Net Income (Loss) Attributable to Noncontrolling Interest	0		0		0	0
Net income (loss) applicable to controlling interest	7,800		39,200		37,800	85,500
Total assets	13,901,000		13,861,000		13,846,000	13,650,000
Average cash and due from banks	101,000		172,000		127,000	235,000
Average money market investments	2,230,000		2,555,000		2,086,000	2,498,000
Average Securities	319,000		266,000		295,000	256,000
Total loans	10,078,000		9,721,000		10,170,000	9,550,000
Total deposits	11,411,000		11,382,000		11,362,000	11,217,000
Preferred equity	226,000		226,000		226,000	202,000
Common equity	1,967,000		1,903,000		1,953,000	1,875,000
Noncontrolling interests	0		0		0	0
Total shareholders' equity	$ 2,193,000		2,129,000		$ 2,179,000	2,077,000
Number of branches | Branches	77				77
California Bank Trust [Member]
Segment Reporting Information [Line Items]
Net interest income	$ 95,000		98,900		$ 289,400	311,800
Provision for loan losses	1,100		(10,100)		(6,500)	(25,100)
Net interest income after provision for loan losses	93,900		109,000		295,900	336,900
Other noninterest income	18,600		17,500		56,500	37,100
Noninterest expense	70,600		77,100		224,400	244,800
Income before income taxes	41,900		49,400		128,000	129,200
Income Tax Expense (Benefit)	16,400		19,100		50,000	50,200
Net income	25,500		30,300		78,000	79,000
Net Income (Loss) Attributable to Noncontrolling Interest	0		0		0	0
Net income (loss) applicable to controlling interest	25,500		30,300		78,000	79,000
Total assets	11,846,000		11,252,000		11,578,000	11,063,000
Average cash and due from banks	88,000		134,000		88,000	152,000
Average money market investments	1,944,000		1,577,000		1,794,000	1,321,000
Average Securities	538,000		258,000		434,000	274,000
Total loans	8,532,000		8,520,000		8,502,000	8,571,000
Total deposits	10,181,000		9,592,000		9,917,000	9,421,000
Preferred equity	162,000		162,000		162,000	162,000
Common equity	1,415,000		1,386,000		1,405,000	1,368,000
Noncontrolling interests	0		0		0	0
Total shareholders' equity	$ 1,577,000		1,548,000		$ 1,567,000	1,530,000
Number of branches | Branches	94				94
NBA [Member]
Segment Reporting Information [Line Items]
Net interest income	$ 40,400		40,300		$ 119,700	120,900
Provision for loan losses	(2,400)		(4,500)		1,000	(15,500)
Net interest income after provision for loan losses	42,800		44,800		118,700	136,400
Other noninterest income	9,900		9,600		29,200	26,200
Noninterest expense	35,800		33,200		109,500	109,400
Income before income taxes	16,900		21,200		38,400	53,200
Income Tax Expense (Benefit)	2,600		7,900		10,000	19,700
Net income	14,300		13,300		28,400	33,500
Net Income (Loss) Attributable to Noncontrolling Interest	0		0		0	0
Net income (loss) applicable to controlling interest	14,300		13,300		28,400	33,500
Total assets	5,018,000		4,710,000		4,929,000	4,673,000
Average cash and due from banks	43,000		70,000		45,000	72,000
Average money market investments	441,000		401,000		413,000	368,000
Average Securities	535,000		380,000		466,000	372,000
Total loans	3,799,000		3,660,000		3,803,000	3,668,000
Total deposits	4,360,000		4,081,000		4,277,000	4,016,000
Preferred equity	85,000		85,000		85,000	101,000
Common equity	500,000		465,000		492,000	447,000
Noncontrolling interests	0		0		0	0
Total shareholders' equity	$ 585,000		550,000		$ 577,000	548,000
Number of branches | Branches	66				66
Nevada State Bank [Member]
Segment Reporting Information [Line Items]
Net interest income	$ 27,600		28,400		$ 83,900	84,600
Provision for loan losses	(3,700)		(4,900)		(15,400)	(13,200)
Net interest income after provision for loan losses	31,300		33,300		99,300	97,800
Other noninterest income	9,400		9,600		26,800	23,400
Noninterest expense	32,300		31,800		98,000	97,900
Income before income taxes	8,400		11,100		28,100	23,300
Income Tax Expense (Benefit)	2,800		3,700		9,400	7,700
Net income	5,600		7,400		18,700	15,600
Net Income (Loss) Attributable to Noncontrolling Interest	0		0		0	0
Net income (loss) applicable to controlling interest	5,600		7,400		18,700	15,600
Total assets	4,354,000		4,074,000		4,277,000	4,046,000
Average cash and due from banks	70,000		94,000		72,000	88,000
Average money market investments	961,000		741,000		861,000	735,000
Average Securities	864,000		799,000		854,000	789,000
Total loans	2,321,000		2,318,000		2,354,000	2,314,000
Total deposits	3,951,000		3,670,000		3,870,000	3,648,000
Preferred equity	50,000		50,000		50,000	50,000
Common equity	326,000		330,000		330,000	324,000
Noncontrolling interests	0		0		0	0
Total shareholders' equity	$ 376,000		380,000		$ 380,000	374,000
Number of branches | Branches	49				49
Vectra Bank Colorado [Member]
Segment Reporting Information [Line Items]
Net interest income	$ 25,500		25,400		$ 77,600	76,100
Provision for loan losses	(1,600)		(3,200)		1,900	(9,500)
Net interest income after provision for loan losses	27,100		28,600		75,700	85,600
Other noninterest income	5,800		6,000		15,600	15,700
Noninterest expense	24,700		24,200		73,000	73,200
Income before income taxes	8,200		10,400		18,300	28,100
Income Tax Expense (Benefit)	2,700		3,600		5,800	9,700
Net income	5,500		6,800		12,500	18,400
Net Income (Loss) Attributable to Noncontrolling Interest	0		0		0	0
Net income (loss) applicable to controlling interest	5,500		6,800		12,500	18,400
Total assets	3,246,000		2,751,000		3,154,000	2,639,000
Average cash and due from banks	26,000		41,000		28,000	45,000
Average money market investments	514,000		174,000		459,000	70,000
Average Securities	247,000		152,000		221,000	158,000
Total loans	2,397,000		2,319,000		2,385,000	2,305,000
Total deposits	2,834,000		2,339,000		2,745,000	2,231,000
Preferred equity	25,000		26,000		25,000	46,000
Common equity	324,000		307,000		320,000	279,000
Noncontrolling interests	0		0		0	0
Total shareholders' equity	349,000		333,000		345,000	325,000
TCBW [Member]
Segment Reporting Information [Line Items]
Net interest income	7,500		8,300		22,600	24,000
Provision for loan losses	(1,200)		(700)		(1,800)	(400)
Net interest income after provision for loan losses	8,700		9,000		24,400	24,400
Other noninterest income	1,100		1,100		3,300	1,400
Noninterest expense	5,300		5,700		11,600	17,100
Income before income taxes	4,500		4,400		16,100	8,700
Income Tax Expense (Benefit)	1,500		1,500		5,500	3,000
Net income	3,000		2,900		10,600	5,700
Net Income (Loss) Attributable to Noncontrolling Interest	0		0		0	0
Net income (loss) applicable to controlling interest	3,000		2,900		10,600	5,700
Total assets	1,058,000		977,000		1,007,000	957,000
Average cash and due from banks	29,000		34,000		33,000	28,000
Average money market investments	227,000		140,000		166,000	122,000
Average Securities	86,000		78,000		82,000	84,000
Total loans	702,000		712,000		712,000	710,000
Total deposits	906,000		827,000		863,000	809,000
Preferred equity	3,000		3,000		3,000	3,000
Common equity	111,000		107,000		107,000	105,000
Noncontrolling interests	0		0		0	0
Total shareholders' equity	114,000		110,000		110,000	108,000
Other Segment [Member]
Segment Reporting Information [Line Items]
Net interest income	(16,400)		(27,100)		(49,600)	(88,600)
Provision for loan losses	0		(100)		(100)	(100)
Net interest income after provision for loan losses	(16,400)		(27,000)		(49,500)	(88,500)
Other noninterest income	2,200		(12,000)		(70,100)	28,700
Noninterest expense	8,400		64,000		14,800	75,600
Income before income taxes	(22,600)		(103,000)		(134,400)	(135,400)
Income Tax Expense (Benefit)	(15,100)		(38,500)		(54,800)	(50,100)
Net income	(7,500)		(64,500)		(79,600)	(85,300)
Net Income (Loss) Attributable to Noncontrolling Interest	(600)		0		(2,000)	0
Net income (loss) applicable to controlling interest	(6,900)		(64,500)		(77,600)	(85,300)
Total assets	546,000		420,000		154,000	524,000
Average cash and due from banks	(14,000)		(9,000)		(17,000)	(14,000)
Average money market investments	395,000		(178,000)		(39,000)	(168,000)
Average Securities	56,000		300,000		120,000	409,000
Total loans	(4,000)		5,000		1,000	4,000
Total deposits	(668,000)		(1,427,000)		(1,039,000)	(1,205,000)
Preferred equity	173,000		172,000		173,000	160,000
Common equity	324,000		145,000		258,000	(98,000)
Noncontrolling interests	(17,000)		0		(13,000)	0
Total shareholders' equity	480,000		317,000		418,000	62,000
Consolidated Company [Member]
Segment Reporting Information [Line Items]
Net interest income					1,266,400	1,249,500
Provision for loan losses					17,300	(109,700)
Net interest income after provision for loan losses					1,249,100	1,359,200
Other noninterest income					253,100	379,200
Noninterest expense					1,197,700	1,242,600
Income before income taxes					304,500	495,800
Income Tax Expense (Benefit)					97,500	179,200
Net income					207,000	316,600
Net Income (Loss) Attributable to Noncontrolling Interest					0	0
Net income (loss) applicable to controlling interest					207,000	316,600
Total assets					57,573,000	55,535,000
Average cash and due from banks					639,000	938,000
Average money market investments					8,404,000	8,047,000
Average Securities					5,299,000	4,062,000
Total loans					40,111,000	39,414,000
Total deposits					48,181,000	45,846,000
Preferred equity					1,004,000	1,004,000
Common equity					6,519,000	5,856,000
Noncontrolling interests					0	0
Total shareholders' equity					$ 7,523,000	$ 6,860,000
Consolidated Entities [Member]
Segment Reporting Information [Line Items]
Net interest income	425,400		416,700
Provision for loan losses	18,300		(54,700)
Net interest income after provision for loan losses	407,100		471,400
Other noninterest income	130,800		116,000
Noninterest expense	396,100		438,500
Income before income taxes	141,800		148,900
Income Tax Expense (Benefit)	40,800		53,100
Net income	101,000		95,800
Net Income (Loss) Attributable to Noncontrolling Interest	0		0
Net income (loss) applicable to controlling interest	101,000		95,800
Total assets	58,406,000		56,128,000
Average cash and due from banks	584,000		858,000
Average money market investments	8,776,000		8,493,000
Average Securities	5,856,000		4,047,000
Total loans	40,025,000		39,567,000
Total deposits	48,919,000		46,291,000
Preferred equity	1,004,000		1,004,000
Common equity	6,656,000		6,221,000
Noncontrolling interests	0		0
Total shareholders' equity	$ 7,660,000		$ 7,225,000
Utah [Member] | Zions Bank [Member]
Segment Reporting Information [Line Items]
Number of branches | Branches	99				99
Idaho [Member] | Zions Bank [Member]
Segment Reporting Information [Line Items]
Number of branches | Branches	24				24
WYOMING | Zions Bank [Member]
Segment Reporting Information [Line Items]
Number of branches | Branches	1				1
Colorado [Member] | Vectra Bank Colorado [Member]
Segment Reporting Information [Line Items]
Number of branches | Branches	36				36
New Mexico [Member] | Vectra Bank Colorado [Member]
Segment Reporting Information [Line Items]
Number of branches | Branches	1				1
WASHINGTON | TCBW [Member]
Segment Reporting Information [Line Items]
Number of branches | Branches	1				1
OREGON | TCBW [Member]
Segment Reporting Information [Line Items]
Number of branches | Branches	1				1
Other Segment [Member]
Segment Reporting Information [Line Items]
Realized Losses on Sales of CDOs		$ 73,100
Vectra Bank Colorado [Member]
Segment Reporting Information [Line Items]
Realized Losses on Sales of CDOs		600
Nevada State Bank [Member]
Segment Reporting Information [Line Items]
Realized Losses on Sales of CDOs		600
Zions Bank [Member]
Segment Reporting Information [Line Items]
Realized Losses on Sales of CDOs		$ 62,500