First Citizens BancShares (FCNCO) 10-Q4 Nov 152015 Q3 Quarterly reportFinancial data

Company Profile

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
Document And Entity Information - shares	Sep. 30, 2015	Nov. 03, 2015
Entity Registrant Name	FIRST CITIZENS BANCSHARES INC /DE/
Entity Central Index Key	798,941
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q3
Amendment Flag	false
Class A Common Stock
Entity Common Stock, Shares Outstanding		11,005,220
Class B Common Stock
Entity Common Stock, Shares Outstanding		1,005,185

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Assets
Cash and due from banks	$ 546,444	$ 604,182
Overnight investments	2,368,132	1,724,919
Investment securities available for sale	6,690,578	7,171,917
Investment securities held to maturity	301	518
Loans held for sale	71,874	63,696
Loans and Leases Receivable, Gross	19,855,806	18,769,465
Less allowance for loan and lease losses	(205,463)	(204,466)
Net loans and leases	19,650,343	18,564,999
Premises and equipment	1,123,828	1,125,081
Other real estate owned:
Other Real Estate, Covered	8,152	22,982
Other Real Estate, Non Covered	61,707	70,454
Income earned not collected	67,368	57,254
FDIC Indemnification Asset	9,276	28,701
Goodwill	139,773	139,773
Other intangible assets	95,535	106,610
Other assets	616,513	394,027
Total assets	31,449,824	30,075,113
Liabilities
Noninterest-bearing	9,171,529	8,086,784
Interest-bearing	17,547,846	17,591,793
Total deposits	26,719,375	25,678,577
Short-term borrowings	759,757	987,184
Long-term obligations	705,418	351,320
FDIC loss share payable	124,038	116,535
Other liabilities	278,708	253,903
Total liabilities	28,587,296	27,387,519
Shareholders' Equity
Surplus	658,918	658,918
Retained earnings	2,226,476	2,069,647
Accumulated other comprehensive loss	(34,876)	(52,981)
Total shareholders' equity	2,862,528	2,687,594
Total liabilities and shareholders' equity	31,449,824	30,075,113
Class A Common Stock
Shareholders' Equity
Common stock	11,005	11,005
Class B Common Stock
Shareholders' Equity
Common stock	$ 1,005	$ 1,005

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2015	Dec. 31, 2014
Class A Common Stock
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shared authorized	16,000,000	16,000,000
Common stock, shares issued	11,005,220	11,005,220
Common stock, shares outstanding	11,005,220	11,005,220
Class B Common Stock
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shared authorized	2,000,000	2,000,000
Common stock, shares issued	1,005,185	1,005,185
Common stock, shares outstanding	1,005,185	1,005,185

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Consolidated Statements of Income - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Interest income
Loans and leases	$ 224,631	$ 164,259	$ 658,175	$ 489,401
Investment securities:
Total investment securities interest and dividend income	24,020	12,707	65,136	36,902
Overnight investments	1,174	655	4,037	2,023
Total interest income	249,825	177,621	727,348	528,326
Interest expense
Deposits	5,216	5,703	16,379	18,534
Short-term borrowings	590	2,694	4,182	4,830
Long-term obligations	4,648	3,002	12,601	12,111
Total interest expense	10,454	11,399	33,162	35,475
Net interest income	239,371	166,222	694,186	492,851
Provision (credit) for loan and lease losses	107	1,537	13,618	(7,665)
Net interest income after provision for loan and lease losses	239,264	164,685	680,568	500,516
Noninterest income
Gain on acquisition	0	0	42,930	0
Cardholder services	19,588	13,248	57,203	38,337
Merchant services	22,005	15,556	62,955	44,112
Service charges on deposit accounts	23,153	15,489	67,572	45,194
Wealth management services	22,223	15,657	64,658	46,352
Fees from processing services	45	7,303	140	17,846
Securities gains (losses)	5,564	0	10,837	0
Other service charges and fees	6,163	4,001	17,303	12,195
Mortgage income	4,852	1,164	14,972	3,329
Insurance commissions	2,945	2,422	8,698	7,962
ATM income	1,800	1,199	5,289	3,661
Adjustments for FDIC receivable for loss share agreements	(4,130)	(4,386)	(9,730)	(32,030)
Other	5,542	6,946	25,126	20,544
Total noninterest income	109,750	78,599	367,953	207,502
Noninterest expense
Salaries and wages	108,992	81,825	324,358	243,017
Employee benefits	27,121	19,797	86,341	59,638
Occupancy expense	22,260	20,265	73,412	60,975
Equipment expense	22,447	18,767	69,284	57,121
FDIC insurance expense	4,933	2,915	13,755	8,191
Foreclosure-related expenses	1,087	4,838	4,663	13,787
Merger-related expenses	3,679	1,505	11,249	7,352
Other	69,653	51,898	199,967	141,779
Total noninterest expense	260,172	201,810	783,029	591,860
Income before income taxes	88,842	41,474	265,492	116,158
Income taxes	32,884	14,973	97,854	40,492
Net income	$ 55,958	$ 26,501	$ 167,638	$ 75,666
Average shares outstanding (in shares)	12,010,405	9,618,941	12,010,405	9,618,941
Net income per share	$ 4.66	$ 2.76	$ 13.96	$ 7.87

Consolidated Statement of Compr

Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 55,958	$ 26,501	$ 167,638	$ 75,666
Unrealized gains and losses on securities:
Change in unrealized securities gains (losses) arising during period	28,231	(11,444)	29,420	32,006
Tax effect	(10,737)	4,444	(11,198)	(12,425)
Reclassification adjustment for net gains realized and included in income before income taxes	5,564	0	10,837	0
Tax effect	2,094	0	4,145	0
Total change in unrealized gains and losses on securities, net of tax	14,024	(7,000)	11,530	19,581
Change in fair value of cash flow hedges:
Change in unrecognized loss on cash flow hedges	721	949	2,006	2,236
Tax effect	(300)	(367)	(796)	(863)
Total change in unrecognized loss on cash flow hedges, net of tax	421	582	1,210	1,373
Change in pension obligation:
Reclassification adjustment for losses included in income before income taxes	2,916	822	8,689	4,019
Tax effect	(1,078)	(319)	(3,324)	(1,563)
Total change in pension obligation, net of tax	1,838	503	5,365	2,456
Net current period other comprehensive income	16,283	(5,915)	18,105	23,410
Total comprehensive income	$ 72,241	$ 20,586	$ 185,743	$ 99,076

Consolidated Statements of Chan

Consolidated Statements of Changes In Shareholders' Equity - USD ($) $ in Thousands	Total	Common StockClass A Common Stock	Common StockClass B Common Stock	Surplus	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning balance at Dec. 31, 2013	$ 2,071,462	$ 8,586	$ 1,033	$ 143,766	$ 1,943,345	$ (25,268)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	75,666	0	0	0	75,666	0
Net current period other comprehensive income	23,410	0	0	0	0	23,410
Cash dividends	(8,657)	0	0	0	(8,657)	0
Ending balance at Sep. 30, 2014	2,161,881	8,586	1,033	143,766	2,010,354	(1,858)
Beginning balance at Dec. 31, 2014	2,687,594	11,005	1,005	658,918	2,069,647	(52,981)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	167,638	0	0	0		0
Net current period other comprehensive income	18,105	0	0	0	0	18,105
Cash dividends	(10,809)	0	0	0	(10,809)	0
Ending balance at Sep. 30, 2015	$ 2,862,528	$ 11,005	$ 1,005	$ 658,918	$ 2,226,476	$ (34,876)

Consolidated Statements of Cha7

Consolidated Statements of Changes In Shareholders' Equity (Parenthetical) - $ / shares	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Statement of Stockholders' Equity [Abstract]
Cash dividends (in dollars per share)	$ 0.90	$ 0.90
Class A Common Stock
Statement of Stockholders' Equity [Abstract]
Repurchase of common stock (in shares)	0	0
Class B Common Stock
Statement of Stockholders' Equity [Abstract]
Repurchase of common stock (in shares)	0	0

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
OPERATING ACTIVITIES
Net income	$ 167,638	$ 75,666
Adjustments to reconcile net income to cash provided by operating activities:
Provision (credit) for loan and lease losses	13,618	(7,665)
Deferred tax expense (benefit)	(3,941)	(24,374)
Net change in current taxes	(26,195)	(24,716)
Depreciation	65,559	53,249
Increase (decrease) in accrued interest payable	(2,244)	(1,434)
Net (increase) decrease in income earned not collected	(10,114)	(121)
Gain on acquisition	(42,930)	0
Securities (gains) losses	(10,837)	0
Origination of loans held for sale	(542,836)	(198,134)
Proceeds from sale of loans held for sale	540,737	206,310
Gain on sale of loans	(6,079)	(3,334)
Net writedowns/losses on other real estate	4,355	9,770
Net amortization of premiums and discounts	(70,150)	(33,917)
Amortization of intangible assets	11,765	1,737
FDIC receivable for loss share agreements	35,395	16,708
FDIC payable for loss share agreements	7,503	7,546
Net change in other assets	29,225	(37,077)
Net change in other liabilities	37,077	27,327
Net cash provided by operating activities	197,546	67,541
INVESTING ACTIVITIES
Net change in loans outstanding	(928,132)	(329,925)
Purchases of investment securities available for sale	(1,887,604)	(1,999,666)
Proceeds from maturities of investment securities held to maturity	217	300
Proceeds from maturities of investment securities available for sale	1,139,053	1,993,051
Proceeds from sales of investment securities available for sale	1,036,254	0
Net change in overnight investments	(643,213)	151,972
Proceeds from sales of loans	45,862	0
Cash (paid to) received from the FDIC for loss share agreements	(24,805)	(5,479)
Proceeds from sale of other real estate	63,446	55,478
Additions to premises and equipment	(55,575)	(65,763)
Business acquisition, net of cash acquired	123,137	18,194
Net cash (used) provided by investing activities	(1,131,360)	(181,838)
FINANCING ACTIVITIES
Net change in time deposits	(405,160)	(301,849)
Net change in demand and other interest-bearing deposits	1,179,606	202,853
Net change in short-term borrowings	(232,928)	91,345
Repayment of long-term obligations	(4,633)	(2,001)
Origination of long-term obligations	350,000	0
Cash dividends paid	(10,809)	(8,657)
Net cash provided (used) by financing activities	876,076	(18,309)
Change in cash and due from banks	(57,738)	(132,606)
Cash and due from banks at beginning of period	604,182	533,599
Cash and due from banks at end of period	546,444	400,993
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES:
Transfers of loans to other real estate	44,065	42,136
Dividends Declared but not Paid	3,603	2,886
Unsettled sales of investment securities	$ 236,617	$ 0

Accounting Policies and Basis o

Accounting Policies and Basis of Presentation	9 Months Ended
Accounting Policies and Basis of Presentation	Sep. 30, 2015
Accounting Policies [Abstract]
Accounting Policies and Basis of Presentation	ACCOUNTING POLICIES AND BASIS OF PRESENTATION First Citizens BancShares, Inc. (BancShares) is a financial holding company organized under the laws of Delaware and conducts operations through its banking subsidiary, First-Citizens Bank & Trust Company (FCB), which is headquartered in Raleigh, North Carolina. General These consolidated financial statements and notes thereto are presented in accordance with instructions for Form 10-Q and Article 10 of Regulation S-X and, therefore, do not include all information and notes necessary for a complete presentation of financial position, results of operations and cash flow activity required in accordance with accounting principles generally accepted in the United States of America (GAAP). In the opinion of management, all normal recurring adjustments necessary for a fair presentation of the consolidated financial position and consolidated results of operations have been made. The unaudited interim consolidated financial statements included in this Form 10-Q should be read in conjunction with the consolidated financial statements and footnotes included in BancShares' Annual Report on Form 10-K for the year ended December 31, 2014 . Reclassifications Prior period financial statements reflect the retrospective application of Accounting Standards Update (ASU) 2014-01, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments Qualified Affordable Housing Projects which was adopted effective in the fourth quarter of 2014 and did not have a material impact on our consolidated financial condition or results of operations. In certain instances other than the retrospective adoption of ASU 2014-01, amounts reported in prior years' consolidated financial statements have been reclassified to conform to the current financial statement presentation. Such reclassifications had no effect on previously reported shareholders' equity or net income. Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates, and different assumptions in the application of these policies could result in material changes in BancShares' consolidated financial position, the consolidated results of its operations or related disclosures. Material estimates that are particularly susceptible to significant change include: • Allowance for loan and lease losses • Fair value of financial instruments, including acquired assets and assumed liabilities • Pension plan assumptions • Cash flow estimates on purchased credit-impaired loans • Receivable from and payable to the FDIC for loss share agreements • Income tax assets, liabilities and expense Recently Adopted Accounting Pronouncements Financial Accounting Standards Board (FASB) Accounting Standards Update (ASU) 2015-10, Technical Corrections and Improvements The amendments in this ASU represent changes to clarify the Codification, correct unintended application of guidance and make minor improvements to the Codification that are not expected to have a significant effect on current accounting practice or create a significant administrative cost to most entities. Additionally, some of the amendments will make the Codification easier to understand and easier to apply by eliminating inconsistencies, providing needed clarifications, and improving the presentation of guidance in the Codification. The transition guidance varies based on the amendments in this ASU. The amendments in this ASU that require transition guidance are effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted, including adoption in an interim period. All other amendments were effective upon issuance. We adopted the amendments effective second quarter of 2015. The adoption did not have an impact on our consolidated financial position or consolidated results of operations. FASB ASU 2015-08, Business Combinations (Topic 805): Pushdown Accounting - Amendments to Securities and Exchange Commission (SEC) Paragraphs Pursuant to Staff Accounting Bulletin No. 115 The amendments in this ASU remove references to SEC Staff Accounting Bulletin (SAB) Topic 5.J as the SEC staff previously rescinded its guidance with the issuance of SAB No. 115 when the FASB issued its own pushdown accounting guidance in ASU 2014-17, an amendment we adopted effective fourth quarter of 2014. We adopted the amendments in ASU 2015-08 effective second quarter of 2015. The adoption did not have an impact on our consolidated financial position or consolidated results of operations. FASB ASU 2014-14, Receivables - Troubled Debt Restructurings by Creditors (Subtopic 310-40): Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure This ASU requires a reporting entity to derecognize a mortgage loan and recognize a separate other receivable upon foreclosure if the following conditions are met: the loan has a government guarantee that is not separable from the loan before foreclosure; at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under that claim and at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed. Upon foreclosure, the separate other receivable should be measured based on the amount of the loan balance expected to be recovered from the guarantor. The amendments in this ASU were effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. We adopted this guidance effective first quarter of 2015. The initial adoption did not have any effect on our consolidated financial position or consolidated results of operations. FASB ASU 2014-11, Transfers and Servicing (Topic 860) This ASU aligns the accounting for repurchase-to-maturity transactions and repurchase agreements executed as a repurchase financing with the accounting for other typical repurchase agreements. Going forward, these transactions would all be accounted for as secured borrowings. The guidance eliminates sale accounting for repurchase-to-maturity transactions and supersedes the guidance under which a transfer of a financial asset and a contemporaneous repurchase financing could be accounted for on a combined basis as a forward agreement, which has resulted in outcomes referred to as off-balance-sheet accounting. The ASU requires a new disclosure for transactions economically similar to repurchase agreements in which the transferor retains substantially all of the exposure to the economic return on the transferred financial assets throughout the term of the transaction. The ASU also requires expanded disclosures about the nature of collateral pledged in repurchase agreements and similar transactions accounted for as secured borrowings. The accounting changes in this ASU were effective for fiscal years beginning after December 15, 2014. In addition, the disclosures for certain transactions accounted for as a sale were effective for the fiscal period beginning after December 15, 2014, while the disclosures for transactions accounted for as secured borrowings were required to be presented for fiscal periods beginning after December 15, 2014, and interim periods beginning after March 15, 2015. We adopted the guidance effective first quarter of 2015. The initial adoption did not have any effect on our consolidated financial position or consolidated results of operations. The new disclosures required by this ASU are included in Note I . FASB ASU 2014-04, Receivables-Troubled Debt Restructurings by Creditors (Subtopic 310-40) This ASU clarifies that an in-substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the amendments require interim and annual disclosure of both (1) the amount of foreclosed residential real estate property held by the creditor and (2) the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. The amendments in this ASU were effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. We adopted the guidance effective first quarter of 2015. The initial adoption did not have any effect on our consolidated financial position or consolidated results of operations. The new disclosures required by this ASU are included in Note F. FASB ASU 2014-01, Investments - Equity Method and Joint Ventures (Topic 323) - Accounting for Investments in Qualified Affordable Housing Projects This ASU permits an accounting policy election to account for investments in qualified affordable housing projects (LIHTC) using the proportional amortization method if certain conditions are met. Under the proportional amortization method, the initial cost of the investment is amortized in proportion to the tax credits and other tax benefits received and recognize the net investment performance in the income statement as a component of income tax expense (benefit). For those investments in qualified affordable housing projects not accounted for using the proportional amortization method, the investment should be accounted for as an equity method investment or a cost method investment in accordance with Accounting Standards Codification (ASC) 970-323. The decision to apply the proportional amortization method of accounting will be applied consistently to all qualifying affordable housing project investments rather than a decision to be applied to individual investments. BancShares early adopted the guidance effective in the fourth quarter of 2014. Previously, LIHTC investments were accounted for under the cost or equity method, and the amortization was recorded as a reduction to other noninterest income, with the tax credits and other benefits received recorded as a component of the provision for income taxes. BancShares believes the proportional amortization method better represents the economics of LIHTC investments and provides users with a better understanding of the returns from such investments than the cost or equity method. LIHTC investments were $74.5 million and $57.1 million at September 30, 2015 and December 31, 2014 , respectively, and are included in "other assets" on the Consolidated Balance Sheets. The cumulative effect of the retrospective application of the change in amortization method was a $2.4 million decrease to both "other assets" and "retained earnings" on the Consolidated Balance Sheets as of January 1, 2012. Under the new amortization method of accounting, amortization expense is recognized in income tax expense in the Consolidated Statements of Income and is offset by the tax effect of tax losses and tax credits received from the investments. This change resulted in a reclassification of expense previously recorded as a reduction in other noninterest income to income tax expense along with additional amortization recognized under the new method of accounting in the Consolidated Statements of Income. An additional change resulting from the new amortization method of accounting was that a deferred tax asset or liability no longer exists as a result of these investments, thus in the retrospective application of the new method, the removal of the deferred tax asset previously reported as well as the additional amortization of the investments, both recorded in other assets, reflected in the Consolidated Balance Sheets were removed. We do not believe the impact of this change in accounting principle is material. Recently Issued Accounting Pronouncements FASB ASU 2015-03, Interest–Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs This ASU simplifies the presentation of debt issuance costs by requiring that debt issuance costs be presented in the balance sheet as a direct deduction from the carrying amount of debt liability, consistent with debt discounts or premiums. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this update. This ASU is effective for interim and annual periods beginning after December 15, 2015 for public business entities, and is to be applied retrospectively. Early adoption is permitted. We will adopt the guidance effective in the first quarter of 2016 and do not anticipate any impact on our consolidated financial position or consolidated results of operations as a result of adoption. FASB ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis This ASU improves targeted areas of consolidation guidance for reporting organizations that are required to evaluate whether they should consolidate certain legal entities. In addition to reducing the number of consolidation models from four to two, the new standard places more emphasis on risk of loss when determining a controlling financial interest, reducing the frequency of the application of related-party guidance when determining a controlling financial interest in a variable interest entity ("VIE"), and changing consolidation conclusions for public and private companies in several industries that typically make use of limited partnerships or VIEs. The amendments in this ASU are effective for periods beginning after December 15, 2015 for public business entities. Early adoption is permitted. We will adopt the guidance effective in the first quarter of 2016 and do not anticipate any significant impact on our consolidated financial position or consolidated results of operations as a result of adoption. FASB ASU 2014-09, Revenue from Contracts with Customers (Topic 606) In May 2014, the FASB issued a standard on the recognition of revenue from contracts with customers with the core principle being for companies to recognize revenue to depict the transfer of goods or services to customers in amounts that reflect the consideration to which the company expects to be entitled in exchange for those goods or services. The new standard also results in enhanced disclosures about revenue, provides guidance for transactions that were not previously addressed comprehensively and improves guidance for multiple-element arrangements. Per ASU 2015-14, Deferral of the Effective Date , this guidance was deferred and is effective for fiscal periods beginning after December 15, 2017, including interim reporting periods within that reporting period. Early adoption is permitted for fiscal periods beginning after December 15, 2016. We are currently evaluating the impact of the new standard and we will adopt during the first quarter of 2018 using one of two retrospective application methods.

Business Combinations

Business Combinations	9 Months Ended
Business Combinations	Sep. 30, 2015
Business Combinations [Abstract]
Business Combinations	NOTE B - BUSINESS COMBINATIONS Capitol City Bank & Trust Company On February 13, 2015, FCB entered into an agreement with the Federal Deposit Insurance Corporation (FDIC), as Receiver, to purchase certain assets and assume certain liabilities of Capitol City Bank & Trust (CCBT). The acquisition expanded FCB's presence in Georgia as CCBT operated eight branch locations in Atlanta, Stone Mountain, Albany, Augusta and Savannah, Georgia. In June of 2015, FCB closed one of the branches in Atlanta. The CCBT transaction was accounted for under the acquisition method of accounting and, accordingly, assets acquired and liabilities assumed were recorded at their estimated fair values on the acquisition date. Fair values are preliminary and subject to refinement for up to one year after the closing date of the acquisition as additional information regarding closing date fair values becomes available. The fair value of the assets acquired recorded was $211.9 million , including $154.5 million in loans and $690 thousand of identifiable intangible assets. Liabilities assumed were $272.5 million of which $266.4 million were deposits. During the second quarter of 2015, adjustments were made to the acquisition fair values primarily based upon updated collateral valuations resulting in an increase of $5.4 million to the gain on acquisition. These adjustments were applied retroactively to the first quarter of 2015 and brought the total gain on the transaction to $42.9 million which is included in noninterest income in the Consolidated Statements of Income. The total after-tax impact of the gain was $26.4 million . The following table provides the identifiable assets acquired and liabilities assumed at their estimated fair values as of the acquisition date. (Dollars in thousands) As recorded by FCB Assets Cash and cash equivalents $ 19,622 Investment securities 35,413 Loans 154,496 Intangible assets 690 Other assets 1,714 Total assets acquired 211,935 Liabilities Deposits 266,352 Short-term borrowings 5,501 Other liabilities 667 Total liabilities assumed 272,520 Fair value of net liabilities assumed (60,585 ) Cash received from FDIC 103,515 Gain on acquisition of CCBT $ 42,930 Merger-related expenses of $525 thousand and $1.8 million were recorded in the Consolidated Statements of Income for the three and nine months ended September 30, 2015 , respectively. Loan-related interest income generated from CCBT was approximately $2.3 million for the third quarter of 2015 and $6.0 million since the acquisition date. All loans resulting from the CCBT transaction were recorded at the acquisition date with a discount attributable, at least in part, to credit quality, and are therefore accounted for as purchased credit-impaired (PCI) loans under ASC 310-30. First Citizens Bancorporation, Inc. and First Citizens Bank and Trust Company, Inc. On October 1, 2014, BancShares completed the merger of First Citizens Bancorporation, Inc. (Bancorporation) with and into BancShares pursuant to an Agreement and Plan of Merger dated June 10, 2014, as amended on July 29, 2014. First Citizens Bank and Trust Company, Inc. merged with and into FCB on January 1, 2015. Under the terms of the Merger Agreement, each share of Bancorporation common stock was converted into the right to receive 4.00 shares of BancShares' Class A common stock and $50.00 cash, unless the holder elected for each share to be converted into the right to receive 3.58 shares of BancShares' Class A common stock and 0.42 shares of BancShares' Class B common stock. BancShares issued 2,586,762 Class A common shares at a fair value of $560.4 million and 18,202 Class B common shares at a fair value of $3.9 million to Bancorporation shareholders. Also, cash paid to Bancorporation shareholders was $30.4 million . At the time of the merger, Bancorporation owned 32,042 shares of common stock in Bancorporation with an approximate fair value of $29.6 million . The fair value of common stock owned by BancShares in Bancorporation was considered part of the purchase price, and the shares ceased to exist after completion of the merger. The Bancorporation transaction was accounted for under the acquisition method of accounting and, accordingly, assets acquired and liabilities assumed were recorded at their estimated fair values on the acquisition date. Fair values are preliminary and subject to refinement for up to one year after the closing date of the acquisition. Assets acquired, excluding goodwill, totaled $8.28 billion , including $4.49 billion in loans and leases, $2.01 billion of investment securities available for sale, $1.28 billion in cash and overnight investments, and $109.4 million of identifiable intangible assets. Liabilities assumed were $7.66 billion , including $7.17 billion of deposits. Goodwill of $4.2 million was recorded equaling the excess purchase price over the estimated fair value of the net assets acquired on the acquisition date. The following unaudited pro forma financial information reflects the consolidated results of operations of BancShares. These results combine the historical results of Bancorporation in the BancShares' Consolidated Statements of Income and, while certain adjustments were made for the estimated impact of certain fair value adjustments and other acquisition-related activity, they are not indicative of what would have occurred had the acquisition taken place at the beginning of the period presented. The unaudited pro forma information has been presented for illustrative purposes only and is not necessarily indicative of the consolidated results of operations that would have been achieved or the future results of operations of BancShares. Three months ended September 30 Nine months ended September 30 (Dollars in thousands) 2014 2014 Total revenue (interest income plus noninterest income) $ 341,927 $ 995,704 Net loss $ (127,768 ) $ (50,279 ) The merger transaction between BancShares and Bancorporation constituted a triggering event for which Bancorporation undertook a goodwill impairment assessment. Based on the analysis performed, Bancorporation determined that its fair value did not support the goodwill recorded; therefore, Bancorporation recorded a $166.8 million goodwill impairment charge to write-off a portion of goodwill prior to the October 1, 2014 effective date of the merger. This goodwill impairment is included in the pro forma financial results for the quarter and nine months ended September 30, 2014.

Investments

Investments	9 Months Ended
Investments	Sep. 30, 2015
Investments [Abstract]
Investments	INVESTMENTS The amortized cost and fair value of investment securities classified as available for sale and held to maturity at September 30, 2015 and December 31, 2014 , are as follows: September 30, 2015 (Dollars in thousands) Cost Gross unrealized gains Gross unrealized losses Fair value Investment securities available for sale U.S. Treasury $ 1,685,794 $ 5,708 $ — $ 1,691,502 Government agency 633,162 1,742 — 634,904 Mortgage-backed securities 4,343,105 26,375 6,919 4,362,561 Equity securities 1,591 20 — 1,611 Total investment securities available for sale $ 6,663,652 $ 33,845 $ 6,919 $ 6,690,578 December 31, 2014 Cost Gross Gross unrealized Fair U.S. Treasury $ 2,626,900 $ 2,922 $ 152 $ 2,629,670 Government agency 908,362 702 247 908,817 Mortgage-backed securities 3,628,187 16,964 11,847 3,633,304 Municipal securities 125 1 — 126 Total investment securities available for sale $ 7,163,574 $ 20,589 $ 12,246 $ 7,171,917 September 30, 2015 Cost Gross Gross unrealized Fair Investment securities held to maturity Mortgage-backed securities $ 301 $ 13 $ — $ 314 December 31, 2014 Cost Gross Gross unrealized Fair Mortgage-backed securities $ 518 $ 26 $ — $ 544 Investments in mortgage-backed securities primarily represent securities issued by the Government National Mortgage Association, Federal National Mortgage Association and Federal Home Loan Mortgage Corporation.The following table provides the amortized cost and fair value by contractual maturity. Expected maturities will differ from contractual maturities on certain securities because borrowers and issuers may have the right to call or prepay obligations with or without prepayment penalties. Repayments of mortgage-backed securities are dependent on the repayments of the underlying loan balances. September 30, 2015 December 31, 2014 (Dollars in thousands) Cost Fair value Cost Fair value Investment securities available for sale Non-amortizing securities maturing in: One year or less $ 673,879 $ 675,164 $ 447,866 $ 447,992 One through five years 1,645,077 1,651,242 3,087,521 3,090,621 Mortgage-backed securities 4,343,105 4,362,561 3,628,187 3,633,304 Equity securities 1,591 1,611 — — Total investment securities available for sale $ 6,663,652 $ 6,690,578 $ 7,163,574 $ 7,171,917 Investment securities held to maturity Mortgage-backed securities held to maturity $ 301 $ 314 $ 518 $ 544 For each period presented, securities gains (losses) included the following: Three months ended September 30 Nine months ended September 30 (Dollars in thousands) 2015 2014 2015 2014 Gross gains on sales of investment securities available for sale $ 5,564 $ — $ 10,850 $ — Gross losses on sales of investment securities available for sale — — (13 ) — Total net securities gain $ 5,564 $ — $ 10,837 $ — The following table provides information regarding securities with unrealized losses as of September 30, 2015 and December 31, 2014 . September 30, 2015 Less than 12 months 12 months or more Total (Dollars in thousands) Fair value Unrealized losses Fair value Unrealized losses Fair value Unrealized losses Investment securities available for sale: Mortgage-backed securities $ 911,980 $ 3,024 $ 300,157 $ 3,895 $ 1,212,137 $ 6,919 Total $ 911,980 $ 3,024 $ 300,157 $ 3,895 $ 1,212,137 $ 6,919 December 31, 2014 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized Investment securities available for sale: U.S. Treasury $ 338,612 $ 151 $ 1,015 $ 1 $ 339,627 $ 152 Government agency 261,288 247 — — 261,288 247 Mortgage-backed securities 573,374 1,805 831,405 10,042 1,404,779 11,847 Total $ 1,173,274 $ 2,203 $ 832,420 $ 10,043 $ 2,005,694 $ 12,246 Investment securities with an aggregate fair value of $300.2 million and $832.4 million had continuous unrealized losses for more than 12 months as of September 30, 2015 and December 31, 2014 , respectively, with an aggregate unrealized loss of $3.9 million and $10.0 million , respectively. As of September 30, 2015 , all 40 of these investments are government sponsored enterprise-issued mortgage-backed securities. None of the unrealized losses identified as of September 30, 2015 or December 31, 2014 relate to the marketability of the securities or the issuer’s ability to honor redemption obligations. Rather, the unrealized losses relate to changes in interest rates relative to when the investment securities were purchased. For all periods presented, BancShares had the ability and intent to retain these securities for a period of time sufficient to recover all unrealized losses. Therefore, none of the securities were deemed to be other than temporarily impaired. Investment securities having an aggregate carrying value of $4.75 billion at September 30, 2015 and $4.37 billion at December 31, 2014 were pledged as collateral to secure public funds on deposit and certain short-term borrowings, and for other purposes as required by law.

Loans and Leases

Loans and Leases	9 Months Ended
Loans and Leases	Sep. 30, 2015
Loans and Leases Receivable Disclosure [Abstract]
Loans and Leases	90 days and accruing Nonaccrual loans and leases Loans and leases > 90 days and accruing Non-PCI loans and leases: Construction and land development - commercial $ 617 $ 45 $ 343 $ 56 Commercial mortgage 41,607 3,353 24,720 1,003 Other commercial real estate 262 — 619 35 Commercial and industrial 6,633 502 1,741 239 Lease financing 374 — 374 2 Residential mortgage 24,911 1,444 14,242 3,191 Revolving mortgage 10,856 19 — 5,463 Construction and land development - noncommercial 875 — — 202 Consumer 1,008 863 — 1,059 Other 133 51 1,966 — Total non-PCI loans and leases $ 87,276 $ 6,277 $ 44,005 $ 11,250 Purchased credit-impaired loans (PCI) loans The following table relates to PCI loans acquired in the CCBT acquisition and summarizes the contractually required payments, which include principal and interest, expected cash flows to be collected, and the fair value of PCI loans and leases at the acquisition date. (Dollars in thousands) Contractually required payments $ 247,812 Cash flows expected to be collected $ 207,688 Fair value of loans at acquisition $ 154,496 The recorded fair values of PCI loans acquired in the CCBT acquisition as of the acquisition date were as follows: (Dollars in thousands) Commercial: Construction and land development $ 4,116 Commercial mortgage 129,732 Other commercial real estate 3,202 Commercial and industrial 2,844 Total commercial loans 139,894 Noncommercial: Residential mortgage 13,251 Consumer 1,351 Total noncommercial loans 14,602 Total PCI loans and leases $ 154,496 The following table provides changes in the carrying value of all purchased credit-impaired loans during the nine months ended September 30, 2015 and September 30, 2014 : (Dollars in thousands) 2015 2014 Balance at January 1 $ 1,186,498 $ 1,029,426 Fair value of acquired loans 154,496 316,327 Accretion 91,642 89,775 Payments received and other changes, net (388,572 ) (439,248 ) Balance at September 30 $ 1,044,064 $ 996,280 Unpaid principal balance at September 30 $ 1,788,136 $ 1,754,882 The carrying value of loans on the cost recovery method was $6.9 million at September 30, 2015 and $33.4 million at December 31, 2014 . The cost recovery method is applied to loans when the timing of future cash flows is not reasonably estimable due to borrower nonperformance or uncertainty in the ultimate disposition of the asset. The recorded investment of PCI loans on nonaccrual status was $5.3 million and $33.4 million at September 30, 2015 and December 31, 2014 , respectively. For PCI loans, improved cash flow estimates and receipt of unscheduled loan payments result in the reclassification of nonaccretable difference to accretable yield. Accretable yield resulting from the improved ability to estimate future cash flows generally does not represent amounts previously identified as nonaccretable difference. The following table documents changes to the amount of accretable yield for the first nine months of 2015 and 2014 . (Dollars in thousands) 2015 2014 Balance at January 1 $ 418,160 $ 439,990 Additions from acquisitions 53,192 84,295 Accretion (91,642 ) (89,775 ) Reclassifications from nonaccretable difference 15,687 1,374 Changes in expected cash flows that do not affect nonaccretable difference (53,458 ) (22,068 ) Balance at September 30 $ 341,939 $ 413,816" id="sjs-B4">LOANS AND LEASES BancShares' accounting methods for loans and leases differ depending on whether they are purchased credit-impaired (PCI) or non-PCI. Non-PCI loans and leases include originated commercial, originated noncommercial, purchased revolving, and purchased non-impaired loans. For purchased non-impaired loans to be included as non-PCI, it must be determined that the loans do not have a discount due, at least in part, to credit quality at the time of acquisition. Conversely, loans for which it is probable at acquisition that all required payments will not be collected in accordance with contractual terms are considered PCI loans. PCI loans are evaluated at acquisition and where a discount is required at least in part due to credit quality, the nonrevolving loans are accounted for under the guidance in ASC Topic 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality . PCI loans and leases are recorded at fair value at the date of acquisition. No allowance for loan and lease losses is recorded on the acquisition date as the fair value of the acquired assets incorporates assumptions regarding credit risk. An allowance is recorded if there is additional credit deterioration after the acquisition date. BancShares reports PCI and non-PCI loan portfolios separately, and each portfolio is further divided into commercial and non-commercial based on the type of borrower, purpose, collateral, and/or our underlying credit management processes. Additionally, loans are assigned to loan classes, which further disaggregate loans based upon common risk characteristics. Commercial – Commercial loans include construction and land development, mortgage, other commercial real estate, commercial and industrial, lease financing and other. Construction and land development – Construction and land development consists of loans to finance land for development, investment, and use in a commercial business enterprise; multifamily apartments; and other commercial buildings that may be owner-occupied or income generating investments for the owner. Commercial mortgage – Commercial mortgage consists of loans to purchase or refinance owner-occupied nonresidential and investment properties. Investment properties include office buildings and other facilities that are rented or leased to unrelated parties. Other commercial real estate – Other commercial real estate consists of loans secured by farmland (including residential farms and other improvements) and multifamily (5 or more) residential properties. Commercial and industrial – Commercial and industrial consists of loans or lines of credit to finance corporate credit cards, accounts receivable, inventory and other general business purposes. Lease financing – Lease financing consists solely of lease financing agreements for business equipment, vehicles and other assets. Other – Other consists of all other commercial loans not classified in one of the preceding classes. These typically include loans to non-profit organizations such as churches, hospitals, educational and charitable organizations. Noncommercial – Noncommercial consist of residential and revolving mortgage, construction and land development, and consumer loans. Residential mortgage – Residential real estate consists of loans to purchase, construct or refinance the borrower's primary dwelling, second residence or vacation home. Revolving mortgage – Revolving mortgage consists of home equity lines of credit that are secured by first or second liens on the borrower's primary residence. Construction and land development – Construction and land development consists of loans to construct the borrower's primary or secondary residence or vacant land upon which the owner intends to construct a dwelling at a future date. Consumer – Consumer loans consist of installment loans to finance purchases of vehicles, unsecured home improvements and revolving lines of credit that can be secured or unsecured, including personal credit cards. Loans and leases outstanding included the following at September 30, 2015 and December 31, 2014 : (Dollars in thousands) September 30, 2015 December 31, 2014 Non-PCI loans and leases: Commercial: Construction and land development $ 563,926 $ 493,133 Commercial mortgage 8,076,946 7,552,948 Other commercial real estate 316,924 244,875 Commercial and industrial 2,211,973 1,988,934 Lease financing 691,915 571,916 Other 357,760 353,833 Total commercial loans 12,219,444 11,205,639 Noncommercial: Residential mortgage 2,659,821 2,493,058 Revolving mortgage 2,519,972 2,561,800 Construction and land development 220,493 205,016 Consumer 1,192,012 1,117,454 Total noncommercial loans 6,592,298 6,377,328 Total non-PCI loans and leases 18,811,742 17,582,967 PCI loans: Commercial: Construction and land development 41,582 78,079 Commercial mortgage 568,256 577,518 Other commercial real estate 18,013 40,193 Commercial and industrial 17,023 27,254 Other 2,087 3,079 Total commercial loans 646,961 726,123 Noncommercial: Residential mortgage 334,518 382,340 Revolving mortgage 59,695 74,109 Construction and land development 347 912 Consumer 2,543 3,014 Total noncommercial loans 397,103 460,375 Total PCI loans 1,044,064 1,186,498 Total loans and leases $ 19,855,806 $ 18,769,465 At September 30, 2015 , $296.5 million of total loans and leases were covered under loss share agreements, compared to $485.3 million at December 31, 2014 . At the beginning of the second quarter of 2015, loss share protection expired for non-single family residential loans acquired from Sun American Bank ("SAB") and all loans acquired from First Regional Bank ("FRB"). The loan balance at September 30, 2015 for the expired agreements from SAB were $29.9 million . FRB loan balances at September 30, 2015 were insignificant. Loss share protection for Williamsburg First National Bank non-single family residential loans with a balance of $7.0 million at September 30, 2015 will expire at the beginning of the fourth quarter of 2015. At September 30, 2015 , $3.69 billion in noncovered loans with a lendable collateral value of $2.59 billion were used to secure $520.3 million in Federal Home Loan Bank ("FHLB") of Atlanta advances, resulting in additional borrowing capacity of $2.07 billion . At December 31, 2014 , $3.16 billion in noncovered loans with a lendable collateral value of $2.20 billion were used to secure $240.3 million in FHLB of Atlanta advances, resulting additional borrowing capacity of $1.96 billion . The unamortized discount related to the non-PCI loans and leases acquired in the Bancorporation merger totaled $45.1 million and $61.2 million at September 30, 2015 and December 31, 2014 , respectively. During the three and nine months ended September 30, 2015 , accretion income on non-PCI loans equaled $4.5 million and $15.6 million , respectively. There was no accretion income on non-PCI loans recorded for the same periods in 2014 . Credit quality indicators Loans and leases are monitored for credit quality on a recurring basis. The credit quality indicators used are dependent on the portfolio segment to which the loan relates. Commercial and noncommercial loans and leases have different credit quality indicators as a result of the unique characteristics of the loan segment being evaluated. The credit quality indicators for non-PCI and PCI commercial loans and leases are developed through a review of individual borrowers on an ongoing basis. Each commercial loan is evaluated annually with more frequent evaluation of more severely criticized loans or leases. The credit quality indicators for non-PCI and PCI noncommercial loans are based on the delinquency status of the borrower. As the borrower becomes more delinquent, the likelihood of loss increases. The indicators represent the rating for loans or leases as of the date presented based on the most recent assessment performed. These credit quality indicators are defined as follows: Pass – A pass rated asset is not adversely classified because it does not display any of the characteristics for adverse classification. Special mention – A special mention asset has potential weaknesses that deserve management’s close attention. If left uncorrected, such potential weaknesses may result in deterioration of the repayment prospects or collateral position at some future date. Special mention assets are not adversely classified and do not warrant adverse classification. Substandard – A substandard asset is inadequately protected by the current net worth and paying capacity of the borrower or of the collateral pledged, if any. Assets classified as substandard generally have a well-defined weakness, or weaknesses, that jeopardize the liquidation of the debt. These assets are characterized by the distinct possibility of loss if the deficiencies are not corrected. Doubtful – An asset classified as doubtful has all the weaknesses inherent in an asset classified substandard with the added characteristic that the weaknesses make collection or liquidation in full highly questionable and improbable on the basis of currently existing facts, conditions and values. Loss – Assets classified as loss are considered uncollectible and of such little value that it is inappropriate to be carried as an asset. This classification is not necessarily equivalent to no potential for recovery or salvage value, but rather that it is not appropriate to defer a full charge-off even though partial recovery may be effected in the future. Ungraded – Ungraded loans represent loans that are not included in the individual credit grading process due to their relatively small balances or borrower type. The majority of ungraded loans at September 30, 2015 and December 31, 2014 relate to business credit cards. Business credit card loans are subject to automatic charge-off when they become 120 days past due in the same manner as unsecured consumer lines of credit. The remaining balance is comprised of a small amount of commercial mortgage and other commercial real estate loans. Non-PCI loans and leases outstanding at September 30, 2015 and December 31, 2014 by credit quality indicator are provided below: September 30, 2015 (Dollars in thousands) Non-PCI commercial loans and leases Grade: Construction and land development Commercial mortgage Other commercial real estate Commercial and industrial Lease financing Other Total non-PCI commercial loans and leases Pass $ 555,833 $ 7,821,706 $ 314,171 $ 2,070,568 $ 683,265 $ 354,222 $ 11,799,765 Special mention 5,606 107,790 285 16,812 5,161 1,828 137,482 Substandard 2,487 143,536 1,010 15,241 3,163 1,710 167,147 Doubtful — 647 — 1,544 326 — 2,517 Ungraded — 3,267 1,458 107,808 — — 112,533 Total $ 563,926 $ 8,076,946 $ 316,924 $ 2,211,973 $ 691,915 $ 357,760 $ 12,219,444 December 31, 2014 Non-PCI commercial loans and leases Construction and land Commercial Other Commercial and Lease financing Other Total non-PCI commercial loans and leases Pass $ 474,374 $ 7,284,714 $ 242,053 $ 1,859,415 $ 564,319 $ 349,111 $ 10,773,986 Special mention 13,927 129,247 909 27,683 3,205 1,384 176,355 Substandard 4,720 134,677 1,765 8,878 3,955 3,338 157,333 Doubtful — 2,366 — 164 365 — 2,895 Ungraded 112 1,944 148 92,794 72 — 95,070 Total $ 493,133 $ 7,552,948 $ 244,875 $ 1,988,934 $ 571,916 $ 353,833 $ 11,205,639 September 30, 2015 Non-PCI noncommercial loans and leases (Dollars in thousands) Residential mortgage Revolving mortgage Construction and land development Consumer Total non-PCI noncommercial Current $ 2,615,954 $ 2,503,750 $ 216,736 $ 1,181,710 $ 6,518,150 30-59 days past due 24,179 9,936 2,539 6,889 43,543 60-89 days past due 7,640 2,031 642 2,091 12,404 90 days or greater past due 12,048 4,255 576 1,322 18,201 Total $ 2,659,821 $ 2,519,972 $ 220,493 $ 1,192,012 $ 6,592,298 December 31, 2014 Non-PCI noncommercial loans and leases Residential Revolving Construction Consumer Total non-PCI noncommercial Current $ 2,454,797 $ 2,542,807 $ 202,344 $ 1,110,153 $ 6,310,101 30-59 days past due 23,288 11,097 1,646 4,577 40,608 60-89 days past due 6,018 2,433 824 1,619 10,894 90 days or greater past due 8,955 5,463 202 1,105 15,725 Total $ 2,493,058 $ 2,561,800 $ 205,016 $ 1,117,454 $ 6,377,328 PCI loans and leases outstanding at September 30, 2015 and December 31, 2014 by credit quality indicator are provided below: September 30, 2015 (Dollars in thousands) PCI commercial loans Grade: Construction and land development Commercial mortgage Other commercial real estate Commercial and industrial Other Total PCI commercial loans Pass $ 18,236 $ 302,848 $ 8,519 $ 10,744 $ 775 $ 341,122 Special mention 2,250 94,955 — 1,462 — 98,667 Substandard 16,806 159,148 9,048 4,395 1,312 190,709 Doubtful 4,290 10,967 — 292 — 15,549 Ungraded — 338 446 130 — 914 Total $ 41,582 $ 568,256 $ 18,013 $ 17,023 $ 2,087 $ 646,961 December 31, 2014 PCI commercial loans Construction Commercial Other Commercial Other Total PCI commercial Pass $ 13,514 $ 300,187 $ 11,033 $ 16,637 $ 801 $ 342,172 Special mention 6,063 98,724 16,271 4,137 — 125,195 Substandard 53,739 171,920 12,889 6,312 2,278 247,138 Doubtful 2,809 6,302 — 130 — 9,241 Ungraded 1,954 385 — 38 — 2,377 Total $ 78,079 $ 577,518 $ 40,193 $ 27,254 $ 3,079 $ 726,123 September 30, 2015 PCI noncommercial loans (Dollars in thousands) Residential Revolving Construction Consumer Total PCI noncommercial Current $ 286,402 $ 54,594 $ 347 $ 2,322 $ 343,665 30-59 days past due 14,514 1,234 — 90 15,838 60-89 days past due 6,103 307 — 131 6,541 90 days or greater past due 27,499 3,560 — — 31,059 Total $ 334,518 $ 59,695 $ 347 $ 2,543 $ 397,103 December 31, 2014 PCI noncommercial loans Residential Revolving Construction Consumer Total PCI noncommercial Current $ 326,589 $ 68,548 $ 506 $ 2,582 $ 398,225 30-59 days past due 11,432 1,405 — 147 12,984 60-89 days past due 10,073 345 — 25 10,443 90 days or greater past due 34,246 3,811 406 260 38,723 Total $ 382,340 $ 74,109 $ 912 $ 3,014 $ 460,375 The aging of the outstanding non-PCI loans and leases, by class, at September 30, 2015 and December 31, 2014 is provided in the table below. The calculation of days past due begins on the day after payment is due and includes all days through which all required interest or principal has not been paid. Loans and leases 30 days or less past due are considered current as various grace periods allow borrowers to make payments within a stated period after the due date and still remain in compliance with the loan agreement. September 30, 2015 (Dollars in thousands) 30-59 days past due 60-89 days past due 90 days or greater Total past due Current Total loans and leases Non-PCI loans and leases: Construction and land development - commercial $ 1,319 $ 266 $ 282 $ 1,867 $ 562,059 $ 563,926 Commercial mortgage 14,587 4,897 21,416 40,900 8,036,046 8,076,946 Other commercial real estate 403 290 159 852 316,072 316,924 Commercial and industrial 5,492 961 1,328 7,781 2,204,192 2,211,973 Lease financing 398 169 310 877 691,038 691,915 Residential mortgage 24,179 7,640 12,048 43,867 2,615,954 2,659,821 Revolving mortgage 9,936 2,031 4,255 16,222 2,503,750 2,519,972 Construction and land development - noncommercial 2,539 642 576 3,757 216,736 220,493 Consumer 6,889 2,091 1,322 10,302 1,181,710 1,192,012 Other 11 — 184 195 357,565 357,760 Total non-PCI loans and leases $ 65,753 $ 18,987 $ 41,880 $ 126,620 $ 18,685,122 $ 18,811,742 December 31, 2014 30-59 days 60-89 days 90 days or greater Total past Current Total loans Non-PCI loans and leases: Construction and land development - commercial $ 520 $ 283 $ 330 $ 1,133 $ 492,000 $ 493,133 Commercial mortgage 11,367 4,782 8,061 24,210 7,528,738 7,552,948 Other commercial real estate 206 70 102 378 244,497 244,875 Commercial and industrial 2,843 1,545 378 4,766 1,984,168 1,988,934 Lease financing 1,631 8 2 1,641 570,275 571,916 Residential mortgage 23,288 6,018 8,955 38,261 2,454,797 2,493,058 Revolving mortgage 11,097 2,433 5,463 18,993 2,542,807 2,561,800 Construction and land development - noncommercial 1,646 824 202 2,672 202,344 205,016 Consumer 4,577 1,619 1,105 7,301 1,110,153 1,117,454 Other 146 1,966 — 2,112 351,721 353,833 Total non-PCI loans and leases $ 57,321 $ 19,548 $ 24,598 $ 101,467 $ 17,481,500 $ 17,582,967 The recorded investment, by class, in loans and leases on nonaccrual status, and loans and leases greater than 90 days past due and still accruing at September 30, 2015 and December 31, 2014 for non-PCI loans, were as follows: September 30, 2015 December 31, 2014 (Dollars in thousands) Nonaccrual loans and leases Loans and leases > 90 days and accruing Nonaccrual loans and leases Loans and leases > 90 days and accruing Non-PCI loans and leases: Construction and land development - commercial $ 617 $ 45 $ 343 $ 56 Commercial mortgage 41,607 3,353 24,720 1,003 Other commercial real estate 262 — 619 35 Commercial and industrial 6,633 502 1,741 239 Lease financing 374 — 374 2 Residential mortgage 24,911 1,444 14,242 3,191 Revolving mortgage 10,856 19 — 5,463 Construction and land development - noncommercial 875 — — 202 Consumer 1,008 863 — 1,059 Other 133 51 1,966 — Total non-PCI loans and leases $ 87,276 $ 6,277 $ 44,005 $ 11,250 Purchased credit-impaired loans (PCI) loans The following table relates to PCI loans acquired in the CCBT acquisition and summarizes the contractually required payments, which include principal and interest, expected cash flows to be collected, and the fair value of PCI loans and leases at the acquisition date. (Dollars in thousands) Contractually required payments $ 247,812 Cash flows expected to be collected $ 207,688 Fair value of loans at acquisition $ 154,496 The recorded fair values of PCI loans acquired in the CCBT acquisition as of the acquisition date were as follows: (Dollars in thousands) Commercial: Construction and land development $ 4,116 Commercial mortgage 129,732 Other commercial real estate 3,202 Commercial and industrial 2,844 Total commercial loans 139,894 Noncommercial: Residential mortgage 13,251 Consumer 1,351 Total noncommercial loans 14,602 Total PCI loans and leases $ 154,496 The following table provides changes in the carrying value of all purchased credit-impaired loans during the nine months ended September 30, 2015 and September 30, 2014 : (Dollars in thousands) 2015 2014 Balance at January 1 $ 1,186,498 $ 1,029,426 Fair value of acquired loans 154,496 316,327 Accretion 91,642 89,775 Payments received and other changes, net (388,572 ) (439,248 ) Balance at September 30 $ 1,044,064 $ 996,280 Unpaid principal balance at September 30 $ 1,788,136 $ 1,754,882 The carrying value of loans on the cost recovery method was $6.9 million at September 30, 2015 and $33.4 million at December 31, 2014 . The cost recovery method is applied to loans when the timing of future cash flows is not reasonably estimable due to borrower nonperformance or uncertainty in the ultimate disposition of the asset. The recorded investment of PCI loans on nonaccrual status was $5.3 million and $33.4 million at September 30, 2015 and December 31, 2014 , respectively. For PCI loans, improved cash flow estimates and receipt of unscheduled loan payments result in the reclassification of nonaccretable difference to accretable yield. Accretable yield resulting from the improved ability to estimate future cash flows generally does not represent amounts previously identified as nonaccretable difference. The following table documents changes to the amount of accretable yield for the first nine months of 2015 and 2014 . (Dollars in thousands) 2015 2014 Balance at January 1 $ 418,160 $ 439,990 Additions from acquisitions 53,192 84,295 Accretion (91,642 ) (89,775 ) Reclassifications from nonaccretable difference 15,687 1,374 Changes in expected cash flows that do not affect nonaccretable difference (53,458 ) (22,068 ) Balance at September 30 $ 341,939 $ 413,816

Allowance for Loan and Lease Lo

Allowance for Loan and Lease Losses	9 Months Ended
Allowance for Loan and Lease Losses	Sep. 30, 2015
Loans and Leases Receivable, Allowance [Abstract]
Allowance	NOTE E - ALLOWANCE FOR LOAN AND LEASE LOSSES ("ALLL") The following tables present the activity in the ALLL for non-PCI loan and lease losses by loan class for the three months ended September 30, 2015 and September 30, 2014 : Three months ended September 30, 2015 (Dollars in thousands) Construction and land development - commercial Commercial mortgage Other commercial real estate Commercial and industrial Lease financing Other Residential mortgage Revolving mortgage Construction and land development - non- commercial Consumer Total Non-PCI Loans Allowance for loan and lease losses: Balance at July 1 $ 13,079 $ 80,436 $ 804 $ 39,392 $ 4,706 $ 1,188 $ 12,705 $ 17,290 $ 1,133 $ 22,116 $ 192,849 Provision 1,189 (5,664 ) 291 (799 ) 424 (58 ) 520 871 114 450 (2,662 ) Charge-offs (336 ) (411 ) — (784 ) (7 ) — (394 ) (677 ) — (2,409 ) (5,018 ) Recoveries 129 794 15 296 16 45 314 363 3 762 2,737 Balance at September 30 $ 14,061 $ 75,155 $ 1,110 $ 38,105 $ 5,139 $ 1,175 $ 13,145 $ 17,847 $ 1,250 $ 20,919 $ 187,906 Three months ended September 30, 2014 Construction and land development - commercial Commercial mortgage Other commercial real estate Commercial and industrial Lease financing Other Residential mortgage Revolving mortgage Construction and land development - non- commercial Consumer Total Balance at July 1 $ 11,116 $ 92,129 $ 806 $ 26,909 $ 4,365 $ 612 $ 9,301 $ 16,797 $ 905 $ 13,975 $ 176,915 Provision 1,469 (8,082 ) 61 4,361 (71 ) 127 15 2,075 21 1,758 1,734 Charge-offs — (277 ) — (1,414 ) (28 ) — (231 ) (925 ) (45 ) (2,467 ) (5,387 ) Recoveries 15 476 8 227 34 — 28 174 14 867 1,843 Balance at September 30 $ 12,600 $ 84,246 $ 875 $ 30,083 $ 4,300 $ 739 $ 9,113 $ 18,121 $ 895 $ 14,133 $ 175,105 Nine months ended September 30, 2015 Construction and land development - commercial Commercial mortgage Other commercial real estate Commercial and industrial Lease financing Other Residential mortgage Revolving mortgage Construction and land development - non- commercial Consumer Total Balance at January 1 $ 11,961 $ 85,189 $ 732 $ 30,727 $ 4,286 $ 3,184 $ 10,661 $ 18,650 $ 892 $ 16,555 $ 182,837 Provision 2,380 (11,221 ) 522 11,294 843 (2,100 ) 2,495 440 306 10,029 14,988 Charge-offs (575 ) (691 ) (178 ) (4,815 ) (28 ) — (768 ) (2,086 ) (22 ) (7,935 ) (17,098 ) Recoveries 295 1,878 34 899 38 91 757 843 74 2,270 7,179 Balance at September 30 $ 14,061 $ 75,155 $ 1,110 $ 38,105 $ 5,139 $ 1,175 $ 13,145 $ 17,847 $ 1,250 $ 20,919 $ 187,906 Nine months ended September 30, 2014 Construction and land development - commercial Commercial mortgage Other commercial real estate Commercial and industrial Lease financing Other Residential mortgage Revolving mortgage Construction and land development - non- commercial Consumer Total Balance at January 1 $ 10,335 $ 100,257 $ 1,009 $ 22,362 $ 4,749 $ 190 $ 10,511 $ 16,239 $ 681 $ 13,541 $ 179,874 Provision 2,219 (17,021 ) (167 ) 9,369 (420 ) 562 (933 ) 4,681 274 5,770 4,334 Charge-offs — (718 ) — (2,440 ) (100 ) (13 ) (649 ) (3,249 ) (138 ) (7,271 ) (14,578 ) Recoveries 46 1,728 33 792 71 — 184 450 78 2,093 5,475 Balance at September 30 $ 12,600 $ 84,246 $ 875 $ 30,083 $ 4,300 $ 739 $ 9,113 $ 18,121 $ 895 $ 14,133 $ 175,105 The net provision credits for the commercial mortgage class totaled $5.7 million and $11.2 million for the three and nine months ended September 30, 2015 , respectively, compared to net provision credits of $8.1 million and $17.0 million for the same respective periods of 2014 . The reduction in the net provision credits was attributable to higher 2015 loan growth compared to the prior year offsetting the impact of continued improvement in credit quality. Commercial and industrial loans had a net provision credit of $799 thousand and provision expense of $11.3 million for the three and nine months ended September 30, 2015 , respectively, compared to provision expense of $4.4 million and $9.4 million for the same respective periods of 2014 . The current period quarter net provision credit is driven by a reversal of previously recorded specific reserves on impaired loans. Reserves were released as refinements were made to discount rate assumptions used in estimating cash flows based on annual back testing results. The other loan class had net provision credits of $58 thousand and $2.1 million for the three and nine months ended September 30, 2015 , respectively, compared to provision expense of $127 thousand and $562 thousand for the same respective periods of 2014 . The year-to-date 2015 net provision credit was the result of the reversal of previously identified impairment on individually impaired loans due to credit quality improvement. The provision expense for the residential mortgage loan class totaled $520 thousand and $2.5 million for the three and nine months ended September 30, 2015 , respectively, compared to net provision expense of $15 thousand and a net provision credit of $933 thousand for the same respective periods of 2014 . The increases in the provision expense were attributable to newly originated non-PCI loans. In 2014, improved credit quality trends resulted in a release of reserves for the nine months ended September 30, 2014 . The provision expense for the revolving mortgage loan class totaled $871 thousand and $440 thousand for the three and nine months ended September 30, 2015 , respectively, compared to provision expense of $2.1 million and $4.7 million for the same respective periods of 2014 . The decrease for both periods was due to lower net charge-offs. The provision expense for the consumer loan class totaled $450 thousand and $10.0 million for the three and nine months ended September 30, 2015 , respectively, compared to provision expense of $1.8 million and $5.8 million for the same respective periods of 2014 . The reduction in the current period quarter provision expense was due to an adjustment to the loss rate for certain consumer loans originated during 2015. The increase in year-to-date provision expense was primarily due to higher loan growth than the prior year. The following tables present the allowance for non-PCI loan losses and the recorded investment in loans, by loan class, based on impairment method as of September 30, 2015 and December 31, 2014 : September 30, 2015 (Dollars in thousands) Construction and land development - commercial Commercial mortgage Other commercial real estate Commercial and industrial Lease financing Other Residential mortgage Revolving mortgage Construction and land development - non-commercial Consumer Total Allowance for loan and lease losses: ALLL for loans and leases individually evaluated for impairment $ 417 $ 4,007 $ 295 $ 1,154 $ 291 $ 67 $ 1,158 $ 526 $ 78 $ 498 $ 8,491 ALLL for loans and leases collectively evaluated for impairment 13,644 71,148 815 36,951 4,848 1,108 11,987 17,321 1,172 20,421 179,415 Total allowance for loan and lease losses $ 14,061 $ 75,155 $ 1,110 $ 38,105 $ 5,139 $ 1,175 $ 13,145 $ 17,847 $ 1,250 $ 20,919 $ 187,906 Loans and leases: Loans and leases individually evaluated for impairment $ 3,194 $ 92,745 $ 436 $ 16,395 $ 1,908 $ 1,464 $ 19,691 $ 4,986 $ 1,045 $ 1,098 $ 142,962 Loans and leases collectively evaluated for impairment 560,732 7,984,201 316,488 2,195,578 690,007 356,296 2,640,130 2,514,986 219,448 1,190,914 18,668,780 Total loan and leases $ 563,926 $ 8,076,946 $ 316,924 $ 2,211,973 $ 691,915 $ 357,760 $ 2,659,821 $ 2,519,972 $ 220,493 $ 1,192,012 $ 18,811,742 December 31, 2014 (Dollars in thousands) Construction Commercial Other Commercial and industrial Lease Other Residential Revolving Construction Consumer Total Allowance for loan and lease losses: ALLL for loans and leases individually evaluated for impairment $ 92 $ 8,610 $ 112 $ 1,743 $ 150 $ 1,972 $ 1,360 $ 1,052 $ 71 $ 555 $ 15,717 ALLL for loans and leases collectively evaluated for impairment 11,869 76,579 620 28,984 4,136 1,212 9,301 17,598 821 16,000 167,120 Total allowance for loan and lease losses $ 11,961 $ 85,189 $ 732 $ 30,727 $ 4,286 $ 3,184 $ 10,661 $ 18,650 $ 892 $ 16,555 $ 182,837 Loans and leases: Loans and leases individually evaluated for impairment $ 1,620 $ 82,803 $ 584 $ 11,040 $ 623 $ 2,000 $ 14,913 $ 3,675 $ 1,340 $ 995 $ 119,593 Loans and leases collectively evaluated for impairment 491,513 7,470,145 244,291 1,977,894 571,293 351,833 2,478,145 2,558,125 203,676 1,116,459 17,463,374 Total loan and leases $ 493,133 $ 7,552,948 $ 244,875 $ 1,988,934 $ 571,916 $ 353,833 $ 2,493,058 $ 2,561,800 $ 205,016 $ 1,117,454 $ 17,582,967 The following tables show the activity in the allowance for PCI loan and lease losses by loan class for the three months and nine months ended September 30, 2015 and September 30, 2014 . Three months ended September 30, 2015 (Dollars in thousands) Construction and land development - commercial Commercial mortgage Other commercial real estate Commercial and industrial Residential mortgage Revolving mortgage Construction and land development - noncommercial Consumer and other Total PCI Loans Allowance for loan and lease losses: Balance at July 1 $ 569 $ 6,428 $ 69 $ 323 $ 5,842 $ 2,051 $ — $ 186 $ 15,468 Provision 632 2,187 235 118 (281 ) (151 ) — 29 2,769 Charge-offs — (48 ) (39 ) (15 ) (577 ) — (1 ) (680 ) Recoveries — — — — — — — — — Balance at September 30 $ 1,201 $ 8,567 $ 304 $ 402 $ 5,546 $ 1,323 $ — $ 214 $ 17,557 Three months ended September 30, 2014 (Dollars in thousands) Construction and land development - commercial Commercial mortgage Other commercial real estate Commercial and industrial Residential mortgage Revolving mortgage Construction and land development - noncommercial Consumer and other Total Balance at July 1 $ 3,803 $ 17,315 $ 407 $ 375 $ 7,093 $ 81 $ — $ 257 $ 29,331 Provision (1,815 ) (2,374 ) (435 ) 182 187 3,899 239 (80 ) (197 ) Charge-offs (1,633 ) (2,357 ) 106 839 (188 ) (1 ) (83 ) (17 ) (3,334 ) Recoveries — — — — — — — — — Balance at September 30 $ 355 $ 12,584 $ 78 $ 1,396 $ 7,092 $ 3,979 $ 156 $ 160 $ 25,800 Nine months ended September 30, 2015 (Dollars in thousands) Construction and land development - commercial Commercial mortgage Other commercial real estate Commercial and industrial Residential mortgage Revolving mortgage Construction and land development - noncommercial Consumer and other Total Balance at January 1 $ 150 $ 10,135 $ 75 $ 1,240 $ 5,820 $ 3,999 $ 183 $ 27 $ 21,629 Provision 1,148 (803 ) 229 (514 ) 21 (1,918 ) (183 ) 650 (1,370 ) Charge-offs (97 ) (765 ) — (324 ) (295 ) (758 ) — (463 ) (2,702 ) Recoveries — — — — — — — — — Balance at September 30 $ 1,201 $ 8,567 $ 304 $ 402 $ 5,546 $ 1,323 $ — $ 214 $ 17,557 Nine months ended September 30, 2014 (Dollars in thousands) Construction Commercial Other Commercial Residential Revolving Construction Consumer Total Balance at January 1 $ 1,320 $ 29,906 $ 1,354 $ 5,275 $ 11,802 $ 2,959 $ 682 $ 222 $ 53,520 Provision 1,463 (6,946 ) (1,382 ) (1,883 ) (4,289 ) 1,502 (443 ) (21 ) (11,999 ) Charge-offs (2,428 ) (10,376 ) 106 (1,996 ) (421 ) (482 ) (83 ) (41 ) (15,721 ) Recoveries — — — — — — — — — Balance at September 30 $ 355 $ 12,584 $ 78 $ 1,396 $ 7,092 $ 3,979 $ 156 $ 160 $ 25,800 The PCI loan portfolio net provision expense totaled $2.8 million during the third quarter of 2015 , compared to a net provision credit of $197 thousand during the same period of 2014 . The increase in the current period quarter provision for loan and lease losses on PCI loans resulted from a $3.9 million reclassification increasing provision expense. In the current quarter, $3.9 million was reclassified between accretable yield and the allowance for loan and lease losses that increased both accretion income and provision expense. There was no net impact on earnings as a result of this reclassification. We recorded PCI loan portfolio net provision credits of $1.4 million and $12.0 million for the nine months ended September 30, 2015 and 2014 , respectively. The decrease in the net provision credit was primarily due to lower impairment reversals on the PCI loan portfolio. The following tables show the ending balances of PCI loans and leases and related allowance by class of loans as of September 30, 2015 and December 31, 2014 : September 30, 2015 (Dollars in thousands) Construction Commercial Other Commercial Residential Revolving Construction Consumer Total ALLL for loans and leases acquired with deteriorated credit quality $ 1,201 $ 8,567 $ 304 $ 402 $ 5,546 $ 1,323 $ — $ 214 $ 17,557 Loans and leases acquired with deteriorated credit quality 41,582 568,256 18,013 17,023 334,518 59,695 347 4,630 1,044,064 December 31, 2014 (Dollars in thousands) Construction Commercial Other Commercial Residential Revolving Construction Consumer Total ALLL for loans and leases acquired with deteriorated credit quality $ 150 $ 10,135 $ 75 $ 1,240 $ 5,820 $ 3,999 $ 183 $ 27 $ 21,629 Loans and leases acquired with deteriorated credit quality 78,079 577,518 40,193 27,254 382,340 74,109 912 6,093 1,186,498 As of September 30, 2015 , and December 31, 2014 , $514.8 million and $285.6 million , respectively, in PCI loans experienced an adverse change in expected cash flows since the date of acquisition. The corresponding valuation reserve was $17.6 million and $21.6 million , respectively. The following tables provide information on non-PCI impaired loans and leases, exclusive of loans and leases evaluated collectively as a homogenous group, as of September 30, 2015 and December 31, 2014 including interest income recognized in the period during which the loans and leases were considered impaired. September 30, 2015 (Dollars in thousands) With a recorded allowance With no recorded allowance Total Unpaid Related allowance recorded Non-PCI impaired loans and leases: Construction and land development - commercial $ 1,799 $ 1,395 $ 3,194 $ 4,594 $ 417 Commercial mortgage 42,562 50,183 92,745 100,914 4,007 Other commercial real estate 312 124 436 868 295 Commercial and industrial 5,352 11,043 16,395 19,608 1,154 Lease financing 1,610 298 1,908 1,908 291 Other 1,464 — 1,464 1,540 67 Residential mortgage 9,746 9,945 19,691 21,559 1,158 Revolving mortgage 2,852 2,134 4,986 6,137 526 Construction and land development - noncommercial 1,045 — 1,045 1,045 78 Consumer 877 221 1,098 1,134 498 Total non-PCI impaired loans and leases $ 67,619 $ 75,343 $ 142,962 $ 159,307 $ 8,491 December 31, 2014 (Dollars in thousands) With a With no Total Unpaid Related Non-PCI impaired loans and leases: Construction and land development - commercial $ 996 $ 624 $ 1,620 $ 6,945 $ 92 Commercial mortgage 57,324 25,479 82,803 87,702 8,610 Other commercial real estate 112 472 584 913 112 Commercial and industrial 10,319 721 11,040 12,197 1,743 Lease financing 319 304 623 623 150 Other 2,000 — 2,000 2,000 1,972 Residential mortgage 10,198 4,715 14,913 15,746 1,360 Revolving mortgage 3,675 — 3,675 4,933 1,052 Construction and land development - noncommercial 1,077 263 1,340 1,340 71 Consumer 987 8 995 1,067 555 Total non-PCI impaired loans and leases $ 87,007 $ 32,586 $ 119,593 $ 133,466 $ 15,717 The following tables show the average non-PCI impaired loan balance and the interest income recognized by loan class for the three and nine months ended September 30, 2015 and September 30, 2014 : Three months ended September 30, 2015 Three months ended September 30, 2014 (Dollars in thousands) Average Interest income recognized Average Interest income recognized Non-PCI impaired loans and leases: Construction and land development - commercial $ 3,257 $ 37 $ 2,296 $ 26 Commercial mortgage 99,613 803 90,318 806 Other commercial real estate 539 6 1,980 7 Commercial and industrial 17,005 130 11,699 108 Lease financing 1,939 21 312 5 Other 1,543 20 42 1 Residential mortgage 19,945 141 15,071 111 Revolving mortgage 5,064 29 3,708 29 Construction and land development - noncommercial 1,027 12 1,942 27 Consumer 1,176 19 1,063 19 Total non-PCI impaired loans and leases $ 151,108 $ 1,218 $ 128,431 $ 1,139 Nine months ended September 30, 2015 Nine months ended September 30, 2014 (Dollars in thousands) Average balance Interest income recognized Average Interest income recognized Non-PCI impaired loans and leases: Construction and land development - commercial $ 3,148 $ 107 $ 1,701 $ 57 Commercial mortgage 88,614 2,405 86,131 2,522 Other commercial real estate 498 7 2,474 67 Commercial and industrial 13,815 379 14,227 461 Lease financing 1,664 55 589 26 Other 1,789 20 29 2 Residential mortgage 17,376 401 15,525 395 Revolving mortgage 4,022 68 4,069 105 Construction and land development - noncommercial 821 28 1,902 77 Consumer 1,117 58 1,710 70 Total non-PCI impaired loans and leases $ 132,864 $ 3,528 $ 128,357 $ 3,782 Troubled Debt Restructurings BancShares accounts for certain loan modifications or restructurings as troubled debt restructurings ("TDRs"). In general, the modification or restructuring of a loan is considered a TDR if, for economic reasons or legal reasons related to a borrower's financial difficulties, a concession is granted to the borrower that creditors would not otherwise grant. Concessions may relate to the contractual interest rate, maturity date, payment structure or other actions. In accordance with GAAP, acquired loans accounted for under ASC 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality, are not initially considered to be TDRs, but can be classified as such if a modification is made subsequent to acquisition. Subsequent modifications of a PCI loan accounted for in a pool that would otherwise meet the definition of a TDR is not reported, or accounted for, as a TDR since pooled PCI loans are excluded from the scope of TDR accounting. The following table provides a summary of total TDRs by accrual status. September 30, 2015 December 31, 2014 (Dollars in thousands) Accruing Nonaccruing Total Accruing Nonaccruing Total Commercial loans Construction and land development - $ 3,479 $ 630 $ 4,109 $ 2,591 $ 446 $ 3,037 Commercial mortgage 71,885 12,884 84,769 92,184 8,937 101,121 Other commercial real estate 1,889 95 1,984 2,374 449 2,823 Commercial and industrial 9,733 4,122 13,855 9,864 664 10,528 Lease 1,082 326 1,408 258 365 623 Other — — — 34 — 34 Total commercial TDRs 88,068 18,057 106,125 107,305 10,861 118,166 Noncommercial Residential mortgage 24,103 7,000 31,103 22,597 4,655 27,252 Revolving mortgage 3,592 1,313 4,905 3,675 — 3,675 Construction and land development - 1,045 — 1,045 1,391 — 1,391 Consumer and other 2,454 87 2,541 995 — 995 Total noncommercial TDRs 31,194 8,400 39,594 28,658 4,655 33,313 Total TDRs $ 119,262 $ 26,457 $ 145,719 $ 135,963 $ 15,516 $ 151,479 The majority of TDRs are included in the special mention, substandard or doubtful grading categories. When a restructured loan subsequently defaults, it is evaluated and downgraded if appropriate. The more severely graded the loan, the lower the estimated expected cash flows and the greater the allowance recorded. Further, TDRs over $500,000 and graded substandard or lower are evaluated individually for impairment through a review of collateral values or analysis of cash flow. The following table shows the accrual status of non-PCI and PCI TDRs. (Dollars in thousands) September 30, 2015 December 31, 2014 Accruing TDRs: PCI $ 32,370 $ 44,647 Non-PCI 86,892 91,316 Total accruing TDRs 119,262 135,963 Nonaccruing TDRs: PCI 717 2,225 Non-PCI 25,740 13,291 Total nonaccruing TDRs 26,457 15,516 All TDRs: PCI 33,087 46,872 Non-PCI 112,632 104,607 Total TDRs $ 145,719 $ 151,479 The following tables provide the types of TDRs made during the three and nine months ended September 30, 2015 and September 30, 2014 , as well as a summary of loans that were modified as a TDR during the twelve months ended September 30, 2015 and September 30, 2014 that subsequently defaulted during the three and nine months ended September 30, 2015 and September 30, 2014 . BancShares defines payment default as movement of the TDR to nonaccrual status, which is generally 90 days past due for TDRs, foreclosure or charge-off, whichever occurs first. Three months ended September 30, 2015 Three months ended September 30, 2014 All restructurings Restructurings with payment default All restructurings Restructurings with payment default (Dollars in thousands) Number of Loans Recorded investment at period end Number of Loans Recorded investment at period end Number of Loans Recorded investment at period end Number of Loans Recorded investment at period end Non-PCI loans and leases Interest only period provided Construction and land development - noncommercial 1 $ 92 — $ — — $ — — $ — Total interest only 1 92 — — — — — — Loan term extension Commercial mortgage 1 75 — — 1 462 — — Commercial and industrial 3 1,445 — — — — — — Residential mortgage — — — — 3 80 — — Construction and land development - noncommercial — — — — 2 141 — — Consumer — — — — 2 81 — — Total loan term extension 4 1,520 — — 8 764 — — Below market interest rate Construction and land development - commercial 4 193 — — — — — — Commercial mortgage 8 1,248 — — 6 3,062 1 176 Commercial and industrial 3 1,797 1 1,757 3 462 — — Other commercial real estate 2 124 — — — — — — Residential mortgage 25 1,592 4 158 11 609 1 45 Revolving mortgage 1 37 — — — — — — Construction and land development - noncommercial — — — — 3 173 — — Consumer 2 17 — — 5 162 — — Total below market interest rate 45 5,008 5 1,915 28 4,468 2 221 Discharged from bankruptcy Construction and land development - commercial 2 21 — — — — — — Commercial mortgage 2 965 1 275 1 — 1 — Commercial and industrial 2 148 — — — — — — Residential mortgage 6 395 — — — — — — Revolving mortgage 9 666 2 162 2 99 1 — Construction and land development-noncommercial — — — — — — 1 62 Consumer 6 91 2 39 1 13 — — Total discharged from bankruptcy 27 2,286 5 476 4 112 3 62 Total non-PCI restructurings 77 $ 8,906 10 $ 2,391 40 $ 5,344 5 $ 283 Nine months ended September 30, 2015 Nine months ended September 30, 2014 All restructurings Restructurings with payment default All restructurings Restructurings with payment default (Dollars in thousands) Number of Loans Recorded investment at period end Number of Loans Recorded investment at period end Number of Loans Recorded investment at period end Number of Loans Recorded investment at period end Non-PCI loans and leases Interest only period provided Commercial mortgage 2 $ 68 — $ — 6 $ 2,449 2 $ 592 Commercial and industrial 2 1,112 1 — 2 375 — — Construction and land development - noncommercial 1 92 — — — — — — Lease financing — — — — 2 131 — — Other — — — — 1 40 — — Total interest only 5 1,272 1 — 11 2,995 2 592 Loan term extension Construction and land development - commercial 1 204 1 204 2 189 — — Commercial mortgage 7 1,406 — — 11 4,072 — — Commercial and industrial 4 1,473 — — 4 2,040 — — Lease financing — — — — 2 144 — — Residential mortgage — — — — 15 532 — — Revolving mortgage 1 9 — — — — — — Construction and land development - noncommercial — — — — 3 175 — — Consumer 1 5 — — 5 122 — — Total loan term extension 14 3,097 1 204 42 7,274 — — Below market interest rate Construction and land development - commercial 14 626 — — 10 371 — — Commercial mortgage 31 7,880 1 1,757 29 11,399 3 1,276 Commercial and industrial 13 2,476 — — 11 772 — — Other commercial real estate 2 124 — — 1 347 — — Residential mortgage 90 4,946 7 213 29 1,402 2 95 Revolving mortgage 6 140 — — 5 270 — — Construction & land development - noncommercial 2 253 — — 11 590 — — Consumer 13 120 — — 5 162 — — Other 1 1,464 — — — — — — Total below market interest rate 172 18,029 8 1,970 101 15,313 5 1,371 Discharged from bankruptcy Construction and land development - commercial 2 21 — — — — — — Commercial mortgage 3 1,562 1 275 2 970 1 — Commercial and industrial 3 148 — — — — — — Residential mortgage 20 938 — — 9 691 2 288 Revolving mortgage 47 2,230 6 320 10 420 1 — Construction & land development - noncommercial — — — — 1 62 1 62 Consumer 16 187 2 39 4 18 — — Total discharged from bankruptcy 91 5,086 9 634 26 2,161 5 350 Total non-PCI restructurings 282 $ 27,484 19 $ 2,808 180 $ 27,743 12 $ 2,313 Three months ended September 30, 2015 Three months ended September 30, 2014 All restructurings Restructurings with payment default All restructurings Restructurings with payment default (Dollars in thousands) Number of loans Recorded investment at period end Number of loans Recorded investment at period end Number of loans Recorded investment at period end Number of loans Recorded investment at period end PCI loans Loan term extension Construction and land development - commercial — $ — — $ — 1 $ 348 — $ — Residential mortgage — — — — — — 3 381 Total loan term extension — — — — 1 348 3 381 Below market interest rate Commercial mortgage — — — — 6 3,377 1 67 Residential mortgage 3 223 1 47 3 227 — — Total below market interest rate 3 223 1 47 9 3,604 1 67 Discharged from bankruptcy Revolving mortgage 1 105 — — — — — — Total discharged from bankruptcy 1 105 — — — — — — Total PCI restructurings 4 $ 328 1 $ 47 10 $ 3,952 4 $ 448 Nine months ended September 30, 2015 Nine months ended September 30, 2014 All restructurings Restructurings with payment default All restructurings Restructurings with payment default (Dollars in thousands) Number of loans Recorded investment at period end Number of loans Recorded investment at period end Number of loans Recorded investment at period end Number of loans Recorded investment at period end PCI loans Interest only period provided Commercial mortgage — $ — — $ — 2 $ 44 2 $ 44 Total interest only — — — — 2 44 2 44 Loan term extension Construction and land development - commercial — — — — 2 348 — — Residential mortgage — — — — 1 322 4 381 Total loan term extension — — — — 3 670 4 381 Below market interest rate Construction and land development - commercial — — — — 2 308 — — Commercial mortgage — — — — 15 5,539 2 94 Residential mortgage 11 766 1 47 29 3,994 2 — Total below market interest rate 11 766 1 47 46 9,841 4 94 Discharged from bankruptcy Residential mortgage 1 78 — — 26 1,673 2 — Revolving mortgage 1 105 — — — — — — Total discharged from bankruptcy 2 183 — — 26 1,673 2 — Total PCI restructurings 13 $ 949 1 $ 47 77 $ 12,228 12 $ 519 For the three and nine months ended September 30, 2015 and September 30, 2014 , the recorded investment in TDRs subsequent to modification was not materially impacted by the modification since forgiveness of principal is not a restructuring option frequently used by BancShares.

Other Real Estate Owned

Other Real Estate Owned	9 Months Ended
Other Real Estate Owned	Sep. 30, 2015
Banking and Thrift [Abstract]
Other Real Estate Owned	OTHER REAL ESTATE OWNED (OREO) The following table explains changes in other real estate owned during the nine months ended September 30, 2015 and September 30, 2014 . (Dollars in thousands) Covered Noncovered Total Balance at December 31, 2013 $ 47,081 $ 36,898 $ 83,979 Additions 25,235 16,901 42,136 Additions acquired in the 1st Financial merger — 11,591 11,591 Sales (27,756 ) (23,526 ) (51,282 ) Writedowns (9,751 ) (4,215 ) (13,966 ) Transfers (1) (5,537 ) 5,537 — Balance at September 30, 2014 $ 29,272 $ 43,186 $ 72,458 Balance at December 31, 2014 $ 22,982 $ 70,454 $ 93,436 Additions 6,202 38,022 44,224 Sales (17,539 ) (46,612 ) (64,151 ) Writedowns (1,387 ) (2,263 ) (3,650 ) Transfers (1) (2,106 ) 2,106 — Balance at September 30, 2015 $ 8,152 $ 61,707 $ 69,859 (1) Transfers include OREO balances associated with expired loss share agreements. At September 30, 2015 and December 31, 2014 , BancShares had $15.8 million and $29.0 million , respectively, of foreclosed residential real estate property in OREO. The recorded investment in consumer mortgage loans collateralized by residential real estate property in the process of foreclosure totaled $18.9 million and $24.8 million at September 30, 2015 and December 31, 2014 , respectively.

FDIC Loss Share Receivable

FDIC Loss Share Receivable	9 Months Ended
FDIC Loss Share Receivable	Sep. 30, 2015
FDIC Loss Share Receivable [Abstract]
FDIC Loss Share Receivable	FDIC LOSS SHARE RECEIVABLE The following table provides changes in the receivable from the FDIC for the three and nine months ended September 30, 2015 and September 30, 2014 . Three months ended September 30 Nine months ended September 30 (Dollars in thousands) 2015 2014 2015 2014 Beginning balance $ 5,808 $ 49,959 $ 28,701 $ 93,397 Amortization (2,343 ) (6,362 ) (8,835 ) (37,028 ) Net cash payments to FDIC 13,915 1,130 24,805 5,479 Post-acquisition adjustments (8,104 ) 413 (35,395 ) (16,708 ) Ending balance $ 9,276 $ 45,140 $ 9,276 $ 45,140 The receivable from the FDIC for loss share agreements is measured separately from the related covered assets and is recorded at fair value at the acquisition date using projected cash flows based on the expected reimbursements for losses and the applicable loss share percentages. See Note L for information related to FCB's recorded payable to the FDIC for loss share agreements. Amortization reflects changes in the FDIC loss share receivable due to improvements in expected cash flows that are being recognized over the remaining term of the loss share agreement. Cash payments to FDIC represent the net impact of loss share loan recoveries, charge-offs and related expenses as calculated and reported in FDIC loss share certificates. Post-acquisition adjustments represent the net change in loss estimates related to acquired loans and covered OREO as a result of changes in expected cash flows and the ALLL related to those covered loans. For loans covered by loss share agreements, subsequent decreases in the amount expected to be collected from the borrower or collateral liquidation result in a provision for loan and lease losses, an increase in the ALLL and a proportional adjustment to the receivable from the FDIC for the estimated amount to be reimbursed. Subsequent increases in the amount expected to be collected from the borrower or collateral liquidation result in the reversal of some or all previously recorded provision for loan and lease losses, a decrease in the related ALLL and a proportional adjustment to the receivable from the FDIC, or prospective adjustment to the accretable yield and the related receivable from the FDIC if no provision for loan and lease losses had been recorded previously. The loss share agreements for FRB and non-single family residential loans acquired from SAB expired at the beginning of the second quarter of 2015. The loss share agreement for non-single family residential loans for Williamsburg First National Bank will expire at the beginning of the fourth quarter of 2015.

Mortgage Servicing Rights

Mortgage Servicing Rights	9 Months Ended
Mortgage Servicing Rights	Sep. 30, 2015
Mortgage Servicing Rights [Abstract]
Transfers and Servicing of Financial Assets [Text Block]	MORTGAGE SERVICING RIGHTS Our portfolio of residential mortgage loans serviced for third parties was $2.10 billion and $1.95 billion as of September 30, 2015 and December 31, 2014 , respectively. These loans were originated by BancShares and sold to third parties on a non-recourse basis with servicing rights retained. These retained servicing rights are recorded as a servicing asset on the Consolidated Balance Sheets and are initially recorded at fair value. The activity of the servicing asset for the three and nine months ended September 30 , 2015 and 2014 is presented in the following table: Three months ended September 30 Nine months ended September 30 (Dollars in thousands) 2015 2014 2015 2014 Beginning balance $ 18,162 $ — $ 16,688 $ 16 Servicing rights originated 1,857 — 4,446 — Amortization (695 ) — (2,657 ) (164 ) Servicing rights acquired in the 1st Financial merger — — — 148 Valuation allowance reversal 3 — 850 — Ending balance $ 19,327 $ — $ 19,327 $ — The following table presents the activity in the servicing asset valuation allowance for the three and nine months ended September 30 , 2015 and 2014 : Three months ended September 30 Nine months ended September 30 (Dollars in thousands) 2015 2014 2015 2014 Beginning balance $ 3 $ — $ 850 $ — Valuation allowance reversal (3 ) — (850 ) — Ending balance $ — $ — $ — $ — As of September 30, 2015 , the carrying value of BancShares' mortgage servicing rights was $19.3 million . Contractually specified mortgage servicing fees, late fees, and ancillary fees earned for the three and nine months ended September 30, 2015 were $2.8 million and $8.9 million , respectively, and are included in mortgage income in the Consolidated Statements of Income. Mortgage servicing fees, late fees or ancillary fees earned for the three and nine months ended September 30, 2014 were insignificant since the majority of the mortgage servicing rights were acquired in the Bancorporation merger on October 1, 2014. The amortization expense related to mortgage servicing rights, included as a reduction of mortgage income in the Consolidated Statements of Income, was $695 thousand for the three months ended September 30, 2015 . For the nine months ended September 30, 2015 and 2014 the amortization expense related to mortgage servicing rights was $2.7 million and $164 thousand , respectively. Amortization expense included an impairment reversal of $3 thousand and $850 thousand for the three and nine months ended September 30, 2015 . No net valuation allowance impairment was recorded for the three and nine months ended September 30, 2014 . Valuation of mortgage servicing rights is performed using a pooling methodology. Similar loans are pooled together and evaluated on a discounted earnings basis to determine the present value of future earnings. Key economic assumptions used to value mortgage servicing rights as of September 30, 2015 and December 31, 2014 were as follows: September 30, 2015 December 31, 2014 Discount rate - conventional fixed loans 7.05 % 7.20 % Discount rate - all loans excluding conventional fixed loans 9.05 % 9.20 % Weighted average constant prepayment rate 10.41 % 14.25 % Weighted average cost to service a loan $ 56.61 $ 56.02

Repurchase Agreements

Repurchase Agreements	9 Months Ended
Repurchase Agreements	Sep. 30, 2015
Repurchase Agreements [Abstract]
Repurchase Agreements, Resale Agreements, Securities Borrowed, and Securities Loaned Disclosure [Text Block]	REPURCHASE AGREEMENTS We utilize securities sold under agreements to repurchase to facilitate the needs of our customers and secure long-term funding needs. Repurchase agreements are transactions whereby we offer to sell to a counterparty an undivided interest in an eligible security at an agreed upon purchase price, and which obligates BancShares to repurchase the security on an agreed upon date at an agreed upon repurchase price plus interest at an agreed upon rate. Securities sold under agreements to repurchase are recorded at the amount of cash received in connection with the transaction and are reflected as short-term borrowings on the Consolidated Balance Sheets. We monitor collateral levels on a continuous basis and maintain records of each transaction specifically describing the applicable security and the counterparty’s fractional interest in that security, and we segregate the security from its general assets in accordance with regulations governing custodial holdings of securities. The primary risk with our repurchase agreements is market risk associated with the investments securing the transactions, as we may be required to provide additional collateral based on fair value changes of the underlying investments. Securities pledged as collateral under repurchase agreements are maintained with our safekeeping agents. The carrying value of available for sale investment securities pledged as collateral under repurchase agreements totaled $825.6 million and $418.3 million at September 30, 2015 and December 31, 2014 , respectively. The remaining contractual maturity of the securities sold under agreements to repurchase by class of collateral pledged included in short-term borrowings in the Consolidated Balance Sheets as of September 30, 2015 and December 31, 2014 is presented in the following tables. September 30, 2015 Remaining Contractual Maturity of the Agreements (Dollars in thousands) Overnight and continuous Up to 30 Days 30-90 Days Greater than 90 Days Total Repurchase agreements U.S. Treasury $ 747,206 $ — $ — $ 23,092 $ 770,298 Government agency — — — 6,908 6,908 Total borrowings $ 747,206 $ — $ — $ 30,000 $ 777,206 Gross amount of recognized liabilities for repurchase agreements $ 777,206 December 31, 2014 Remaining Contractual Maturity of the Agreements Overnight and continuous Up to 30 Days 30-90 Days Greater than 90 Days Total Repurchase agreements U.S. Treasury $ 162,924 $ — $ — $ 23,086 $ 186,010 Government agency — — — 6,914 6,914 Mortgage-backed securities 131,501 — — — 131,501 Total borrowings $ 294,425 $ — $ — $ 30,000 $ 324,425 Gross amount of recognized liabilities for repurchase agreements $ 324,425

Estimated Fair Values

Estimated Fair Values	9 Months Ended
Estimated Fair Values	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Estimated Fair Values	ESTIMATED FAIR VALUES Fair value estimates are intended to represent the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants as of the measurement date. Where there is no active market for a financial instrument, BancShares has made estimates using discounted cash flows or other valuation techniques. Inputs to these valuation methods are subjective in nature, involve uncertainties and require significant judgment and therefore cannot be determined with precision. Accordingly, the derived fair value estimates presented below are not necessarily indicative of the amounts BancShares could realize in a current market exchange. ASC 820, Fair Value Measurements and Disclosures , indicates that assets and liabilities are recorded at fair value according to a fair value hierarchy comprised of three levels. The levels are based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. The level within the fair value hierarchy for an asset or liability is based on the highest level of input that is significant to the fair value measurement (with level 1 considered highest and level 3 considered lowest). A brief description of each level follows: • Level 1 values are based on quoted prices for identical instruments in active markets. • Level 2 values are based on quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-based valuation techniques for which all significant assumptions are observable in the market. • Level 3 values are generated from model-based techniques that use at least one significant assumption not observable in the market. These unobservable assumptions reflect estimates that market participants would use in pricing the asset or liability. Valuation techniques include the use of discounted cash flow models and similar techniques. Valuation adjustments, such as those pertaining to counterparty and BancShares' own credit quality and liquidity, may be necessary to ensure that assets and liabilities are recorded at fair value. Credit valuation adjustments are made when market pricing does not accurately reflect the counterparty's credit quality. As determined by BancShares management, liquidity valuation adjustments may be made to the fair value of certain assets to reflect the uncertainty in the pricing and trading of the instruments when we are unable to observe recent market transactions for identical or similar instruments. BancShares management reviews any changes to its valuation methodologies to ensure they are appropriate and justified, and refines valuation methodologies as more market-based data becomes available. Transfers between levels of the fair value hierarchy are recognized at the end of the reporting period. The methodologies used to estimate the fair value of financial assets and financial liabilities are discussed below: Investment securities available for sale . U.S.Treasury, government agency, mortgage-backed securities, municipal securities and trust preferred securities are generally measured at fair value using a third party pricing service or recent comparable market transactions in similar or identical securities and are classified as level 2 instruments. Equity securities are measured at fair value using observable closing prices. Principal active markets for equity prices include published exchanges such as Nasdaq composite and New York Stock Exchange. The inputs used to calculate fair value of equity securities are considered level 1 inputs. Loans held for sale. Certain residential real estate loans are originated to be sold to investors, which are carried at fair value as BancShares elected the fair value option on loans held for sale in 2014. The fair value is based on quoted market prices for similar types of loans. Accordingly, the inputs used to calculate fair value of residential real estate loans held for sale are classified as level 2 inputs. Net loans and leases (PCI and Non-PCI). Fair value is estimated based on discounted future cash flows using the current interest rates at which loans with similar terms would be made to borrowers of similar credit quality. An additional valuation adjustment is made for liquidity. The inputs used in the fair value measurements for loans and leases are considered level 3 inputs. FHLB stock . The carrying amount of FHLB stock is a reasonable estimate of fair value as these securities are not readily marketable and are evaluated for impairment based on the ultimate recoverability of the par value. BancShares considers positive and negative evidence, including the profitability and asset quality of the issuer, dividend payment history and recent redemption experience, when determining the ultimate recoverability of the par value. BancShares believes its investment in FHLB stock is ultimately recoverable at par. The inputs used in the fair value measurement for the FHLB stock are considered level 2 inputs. Mortgage servicing rights. Mortgage servicing rights are carried at the lower of amortized cost or market and are, therefore, carried at fair value only when fair value is less than the asset cost. The fair value of mortgage servicing rights is performed using a pooling methodology. Similar loans are pooled together and a model that relies on discount rates, estimates of prepayment rates and the weighted average cost to service the loans is used to determine the fair value. The inputs used in the fair value measurement for mortgage servicing rights are considered level 3 inputs. Deposits. For non-time deposits, carrying value is a reasonable estimate of fair value. The fair value of time deposits is estimated by discounting future cash flows using the interest rates currently offered for deposits of similar remaining maturities. The inputs used in the fair value measurement for deposits are considered level 2 inputs. Long-term obligations. For fixed rate trust preferred securities, the fair values are determined based on recent trades of the actual security if available. For other long-term obligations, fair values are estimated by discounting future cash flows using current interest rates for similar financial instruments. The inputs used in the fair value measurement for long-term obligations are considered level 2 inputs. Payable to the FDIC for loss share agreements. The fair value of the payable to the FDIC for loss share agreements is determined by the projected cash flows based on expected payments to the FDIC in accordance with the loss share agreements. Cash flows are discounted using current discount rates to reflect the timing of the estimated amounts due to the FDIC. The inputs used in the fair value measurement for the payable to the FDIC are considered level 3 inputs. Interest rate swap . Under the terms of the existing cash flow hedge, BancShares pays a fixed payment to the counterparty in exchange for receipt of a variable payment that is determined based on the three-month LIBOR rate. The fair value of the cash flow hedge is, therefore, based on projected LIBOR rates for the duration of the hedge, values that, while observable in the market, are subject to adjustment due to pricing considerations for the specific instrument. The inputs used in the fair value measurement of the interest rate swap are considered level 2 inputs. Off-balance-sheet commitments and contingencies. Carrying amounts are reasonable estimates of the fair values for such financial instruments. Carrying amounts include unamortized fee income and, in some cases, reserves for any credit losses from those financial instruments. These amounts are not material to BancShares' financial position. For all other financial assets and financial liabilities, the carrying value is a reasonable estimate of the fair value as of September 30, 2015 and December 31, 2014 . The carrying value and fair value for these assets and liabilities are equivalent because they are relatively short term in nature and there is no interest rate or credit risk that would cause the fair value to differ from the carrying value. (Dollars in thousands) September 30, 2015 December 31, 2014 Carrying value Fair value Carrying value Fair value Cash and due from banks $ 546,444 $ 546,444 $ 604,182 $ 604,182 Overnight investments 2,368,132 2,368,132 1,724,919 1,724,919 Investment securities available for sale 6,690,578 6,690,578 7,171,917 7,171,917 Investment securities held to maturity 301 314 518 544 Loans held for sale 71,874 71,874 63,696 63,696 Net loans and leases 19,650,343 19,038,274 18,564,999 18,046,497 Receivable from the FDIC for loss share agreements (1) 9,276 9,276 28,701 18,218 Income earned not collected 67,368 67,368 57,254 57,254 Federal Home Loan Bank stock 37,511 37,511 39,113 39,113 Mortgage servicing rights 19,327 22,358 16,688 16,736 Deposits 26,719,375 26,050,802 25,678,577 25,164,683 Short-term borrowings 759,757 759,757 987,184 987,184 Long-term obligations 705,418 722,180 351,320 367,732 Payable to the FDIC for loss share agreements 124,038 131,711 116,535 122,168 Accrued interest payable 5,950 5,950 8,194 8,194 Interest rate swap 2,331 2,331 4,337 4,337 (1) At September 30, 2015 , the carrying value of the FDIC receivable approximates the fair value due to the short term nature of the majority of loss share agreements. At December 31, 2014 , the fair value of the FDIC receivable is estimated based on discounted future cash flows using current discount rates and excludes receivable related to accretable yield to be amortized in prospective periods. Among BancShares' assets and liabilities, investment securities available for sale, loans held for sale and interest rates swaps accounted for as cash flow hedges are reported at their fair values on a recurring basis. For assets and liabilities carried at fair value on a recurring basis, the following table provides fair value information as of September 30, 2015 and December 31, 2014 . September 30, 2015 Fair value measurements using: (Dollars in thousands) Fair value Level 1 inputs Level 2 inputs Level 3 inputs Assets measured at fair value Investment securities available for sale U.S. Treasury $ 1,691,502 $ — $ 1,691,502 $ — Government agency 634,904 — 634,904 — Mortgage-backed securities 4,362,561 — 4,362,561 — Equity securities 1,611 1,611 — — Total investment securities available for sale $ 6,690,578 $ 1,611 $ 6,688,967 $ — Loans held for sale $ 71,874 $ — $ 71,874 $ — Liabilities measured at fair value Interest rate swaps accounted for as cash flow hedges $ 2,331 $ — $ 2,331 $ — December 31, 2014 Fair value measurements using: Fair value Level 1 inputs Level 2 inputs Level 3 inputs Assets measured at fair value Investment securities available for sale U.S. Treasury $ 2,629,670 $ — $ 2,629,670 $ — Government agency 908,817 — 908,817 — Mortgage-backed securities 3,633,304 — 3,633,304 — Municipal securities 126 — 126 — Total investment securities available for sale $ 7,171,917 $ — $ 7,171,917 $ — Loans held for sale $ 63,696 $ — $ 63,696 $ — Liabilities measured at fair value Interest rate swaps accounted for as cash flow hedges $ 4,337 $ — $ 4,337 $ — There were no transfers between levels during the nine months ended September 30, 2015 . Fair Value Option Beginning in the fourth quarter of 2014, BancShares elected the fair value option for residential real estate loans held for sale. This election reduces certain timing differences in the Consolidated Statement of Income and better aligns with the management of the portfolio from a business perspective. The following table summarizes the difference between the aggregate fair value and the aggregate unpaid principal balance for residential real estate loans held for sale measured at fair value as of September 30, 2015 and December 31, 2014 . September 30, 2015 (Dollars in thousands) Fair Value Aggregate Unpaid Principal Balance Difference Loans held for sale $ 71,874 $ 69,858 $ 2,016 December 31, 2014 Fair Value Aggregate Unpaid Principal Balance Difference Loans held for sale $ 63,696 $ 62,996 $ 700 No loans held for sale were 90 or more days past due or on nonaccrual status as of September 30, 2015 or December 31, 2014 . The changes in fair value for residential real estate loans held for sale for which we elected the fair value option are included in the table below for the three and nine months ended September 30, 2015 . Three months ended September 30, 2015 Nine months ended September 30, 2015 (Dollars in thousands) Gains(Losses) From Fair Value Changes Gains(Losses) From Fair Value Changes Loans held for sale $ 1,347 $ 1,316 The changes in fair value in the table above are recorded as a component of mortgage income on the Consolidated Statements of Income. Certain other assets are adjusted to their fair value on a nonrecurring basis, including impaired loans, OREO, goodwill, which are periodically tested for impairment, and mortgage servicing rights, which are carried at the lower of amortized cost or market. Non-impaired loans held for investment, deposits, short-term borrowings and long-term obligations are not reported at fair value. Impaired loans are deemed to be at fair value if an associated allowance or current period charge-off has been recorded. The value of impaired loans is determined by either collateral valuations or discounted present value of the expected cash flow calculations. Collateral values are determined using appraisals or other third-party value estimates of the subject property with discounts generally between 10 and 14 percent applied for estimated holding and selling costs and other external factors that may impact the marketability of the property. Impaired loans are assigned to an asset manager and monitored monthly for significant changes since the last valuation date. If significant changes are noted, the asset manager orders a new valuation or adjusts the valuation accordingly. Expected cash flows are determined using expected payment information at the individual loan level, discounted using the effective interest rate. The effective interest rate generally ranges between 2 and 16 percent. OREO is measured and reported at fair value using collateral valuations. Collateral values are determined using appraisals or other third-party value estimates of the subject property with discounts generally between 10 and 14 percent applied for estimated holding and selling costs and other external factors that may impact the marketability of the property. Changes to the value of the assets between scheduled valuation dates are monitored through continued communication with brokers and monthly reviews by the asset manager assigned to each asset. The asset manager uses the information gathered from brokers and other market sources to identify any significant changes in the market or the subject property as they occur. Valuations are then adjusted or new appraisals are ordered to ensure the reported values reflect the most current information. OREO that has been acquired or written down in the current year is deemed to be at fair value and included in the table below. Mortgage servicing rights are carried at the lower of cost or market and are, therefore, carried at fair value only when fair value is less than the amortized asset cost. The fair value of mortgage servicing rights is performed using a pooling methodology. Similar loans are pooled together and a discounted cash flow model, which takes into consideration discount rates, prepayment rates, and the weighted average cost to service the loans, is used to determine the fair value. See Note H for further information on the discount rates, prepayment rates and the weighted average cost to service the loans. For financial assets and liabilities carried at fair value on a nonrecurring basis, the following table provides fair value information as of September 30, 2015 and December 31, 2014 . September 30, 2015 Fair value measurements using: (Dollars in thousands) Fair value Level 1 inputs Level 2 inputs Level 3 inputs Impaired loans $ 61,621 $ — $ — $ 61,621 Other real estate not covered under loss share agreements remeasured during current year 39,996 — — 39,996 Other real estate covered under loss share agreements remeasured during current year 3,250 — — 3,250 December 31, 2014 Fair value measurements using: Fair value Level 1 inputs Level 2 inputs Level 3 inputs Impaired loans $ 73,170 $ — $ — $ 73,170 Other real estate not covered under loss share agreements remeasured during current year 40,714 — — 40,714 Other real estate covered under loss share agreements remeasured during current year 17,664 — — 17,664 Mortgage servicing rights 13,562 — — 13,562 No financial liabilities were carried at fair value on a nonrecurring basis as of September 30, 2015 and December 31, 2014 .

Employee Benefit Plans

Employee Benefit Plans	9 Months Ended
Employee Benefit Plans	Sep. 30, 2015
General Discussion of Pension and Other Postretirement Benefits [Abstract]
Employee Benefit Plans	EMPLOYEE BENEFIT PLANS BancShares sponsors noncontributory defined benefit pension plans for its qualifying employees (BancShares Plan) and legacy Bancorporation employees (Bancorporation Plan). Net periodic benefit cost is a component of employee benefits expense. BancShares Plan For the three and nine months ended September 30, 2015 and 2014 , the components of net periodic benefit cost are as follows: Three months ended September 30 Nine months ended September 30 (Dollars in thousands) 2015 2014 2015 2014 Service cost $ 3,358 $ 3,081 $ 10,561 $ 9,247 Interest cost 6,732 6,402 20,230 19,209 Expected return on assets (8,302 ) (7,296 ) (24,896 ) (23,448 ) Amortization of prior service cost 53 53 158 158 Amortization of net actuarial loss 2,863 769 8,531 3,861 Net periodic benefit cost $ 4,704 $ 3,009 $ 14,584 $ 9,027 Bancorporation Plan For the three and nine months ended September 30, 2015 , the components of net periodic benefit cost are as follows: Three months ended September 30 Nine months ended September 30 (Dollars in thousands) 2015 2015 Service cost $ 641 $ 2,506 Interest cost 1,540 4,795 Expected return on assets (2,873 ) (8,612 ) Amortization of prior service cost — — Amortization of net actuarial loss — — Net periodic benefit cost $ (692 ) $ (1,311 ) No contributions were made during the three and nine months ended September 30, 2015 to the BancShares or Bancorporation pension plans. BancShares does not expect to make any contributions to either of the defined benefit pension plans during 2015 .

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	COMMITMENTS AND CONTINGENCIES To meet the financing needs of its customers, BancShares and its subsidiaries have financial instruments with off-balance sheet risk. These financial instruments include commitments to extend credit, standby letters of credit and recourse obligations on mortgage loans sold. These instruments involve elements of credit, interest rate or liquidity risk. Commitments to extend credit are legally binding agreements to lend to customers. Commitments generally have fixed expiration dates or other termination clauses and may require payment of fees. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future liquidity requirements. Established credit standards control the credit risk exposure associated with these commitments. In some cases, BancShares requires that collateral be pledged to secure the commitment, including cash deposits, securities and other assets. At September 30, 2015 , BancShares had unused commitments totaling $7.76 billion , compared to $7.19 billion at December 31, 2014 . Total unfunded commitments relating to investments in affordable housing projects totaled $32.0 million and $16.8 million at September 30, 2015 and December 31, 2014 , respectively, and are included in other liabilities on BancShares' Consolidated Balance Sheets. Standby letters of credit are commitments guaranteeing performance of a customer to a third party. Those commitments are primarily issued to support public and private borrowing arrangements. To mitigate its risk, BancShares’ follows its credit policies in the issuance of standby letters of credit. At September 30, 2015 and December 31, 2014 , BancShares had standby letters of credit amounting to $85.2 million and $77.4 million , respectively. The credit risk related to the issuance of these letters of credit is essentially the same as that involved in extending loans to clients and, therefore, these letters of credit are collateralized when necessary. Pursuant to standard representations and warranties relating to residential mortgage loan sales, contingent obligations exist for various events that may occur following the loan sale. If underwriting or documentation deficiencies are discovered at any point in the life of the loan or if the loan becomes nonperforming within 120 days of its sale, the investor may require BancShares to repurchase the loan or to repay a portion of the sale proceeds. Other liabilities included reserves of $3.1 million and $3.2 million as of September 30, 2015 and December 31, 2014 , respectively, for estimated losses arising from these standard representation and warranty provisions. BancShares has recorded a receivable from the FDIC totaling $9.3 million and $28.7 million as of September 30, 2015 and December 31, 2014 , respectively, for the expected reimbursement of losses on assets covered under the various loss share agreements. These loss share agreements impose certain obligations on us that, in the event of noncompliance, could result in the delay or disallowance of some or all of our rights under those agreements. Requests for reimbursement are subject to FDIC review and may be delayed or disallowed for noncompliance. The loss share agreements are subject to interpretation by both the FDIC and BancShares, and disagreements may arise regarding coverage of losses, expenses and contingencies. The loss share agreements for five FDIC-assisted transactions include provisions related to payments that may be owed to the FDIC at the termination of the agreements (clawback liability) . The clawback liability represents a payment by BancShares to the FDIC if actual cumulative losses on acquired covered assets are lower than the cumulative losses originally estimated by the FDIC at the time of acquisition. The clawback liability is estimated by discounting estimated future payments and is recorded in the Consolidated Balance Sheets as a payable to the FDIC under the relevant loss share agreements. As of September 30, 2015 and December 31, 2014 , the estimated clawback liability was $124.0 million and $116.5 million , respectively. BancShares and various subsidiaries have been named as defendants in legal actions arising from their normal business activities in which damages in various amounts are claimed. BancShares is also exposed to litigation risk relating to the prior business activities of banks from which assets were acquired and liabilities assumed in the various FDIC-assisted transactions. Although the amount of any ultimate liability with respect to such matters cannot be determined, in the opinion of management, any such liability will not have a material effect on BancShares’ consolidated financial statements.

Transactions With Related Perso

Transactions With Related Persons	9 Months Ended
Transactions With Related Persons	Sep. 30, 2015
Related Party Transactions [Abstract]
Related Party Transactions Disclosure	TRANSACTIONS WITH RELATED PERSONS BancShares had, and expects to have in the future, banking transactions in the ordinary course of business with directors, officers and their associates (Related Persons) and entities that are controlled by Related Persons. On September 4, 2015, FCB signed a definitive agreement to sell certain assets and liabilities of its branch office located at 800 South Lafayette in Shelby, North Carolina to The Fidelity Bank, a financial institution controlled by Related Persons. The branch sale is anticipated to close on December 4, 2015. In connection with the sale, FCB will receive a 1 percent premium on deposits sold. The premium is not expected to be material.

Derivatives

Derivatives	9 Months Ended
Derivatives	Sep. 30, 2015
Summary of Derivative Instruments [Abstract]
Derivatives	DERIVATIVES At September 30, 2015 , BancShares had an interest rate swap entered into during 2011 that qualifies as a cash flow hedge under GAAP. For all periods presented, the fair value of the outstanding derivative is included in other liabilities in the consolidated balance sheets, and the net change in fair value is included in the consolidated statements of cash flows under the caption net change in other liabilities. The following table provides the notional amount of the interest rate swap and the fair value of the liability as of September 30, 2015 and December 31, 2014 . September 30, 2015 December 31, 2014 (Dollars in thousands) Notional amount Estimated fair value of liability Notional amount Estimated fair value of liability 2011 interest rate swap hedging variable rate exposure on trust preferred securities 2011-2016 $ 93,500 $ 2,331 $ 93,500 $ 4,337 The interest rate swap is used for interest rate risk management purposes and converts variable-rate exposure on outstanding debt to a fixed rate. The interest rate swap has a notional amount of $93.5 million , representing the amount of variable rate trust preferred capital securities issued during 2006 and still outstanding at the swap inception date. The interest rate swap hedges interest payments through June 2016 and requires fixed-rate payments by BancShares at 5.50 percent in exchange for variable-rate payments of 175 basis points above the three-month LIBOR, which is equal to the interest paid to the holders of the trust preferred capital securities. Settlement of the swap occurs quarterly. As of September 30, 2015 and December 31, 2014 , collateral with a fair value of $2.0 million and $7.0 million , respectively, was pledged to secure the existing obligation under the interest rate swap. For cash flow hedges, the effective portion of the gain or loss due to changes in the fair value of the derivative hedging instrument is included in other comprehensive income, while the ineffective portion, representing the excess of the cumulative change in the fair value of the derivative over the cumulative change in expected future discounted cash flows on the hedged transaction, is recorded in the consolidated statement of income. BancShares’ interest rate swap has been fully effective since inception. Therefore, changes in the fair value of the interest rate swap have had no impact on net income. For the three months ended September 30, 2015 and 2014 , BancShares recognized interest expense of $829 thousand and $840 thousand , respectively, resulting from incremental interest paid to the interest rate swap counterparty, none of which related to ineffectiveness. For the nine months ended September 30, 2015 and 2014 , BancShares recognized interest expense of $2.5 million during both periods, resulting from incremental interest paid to the interest swap counterparty, none of which related to ineffectiveness. BancShares monitors the credit risk of the interest rate swap counterparty.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	9 Months Ended
Accumulated Other Comprehensive Income (Loss)	Sep. 30, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Loss	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Accumulated other comprehensive income (loss) included the following as of September 30, 2015 and December 31, 2014 : September 30, 2015 December 31, 2014 (Dollars in thousands) Accumulated other comprehensive income (loss) Deferred tax expense (benefit) Accumulated other comprehensive income (loss), net of tax Accumulated other comprehensive income (loss) Deferred tax expense (benefit) Accumulated other comprehensive income (loss), net of tax Unrealized gains on investment securities available for sale, net $ 26,926 $ 10,298 $ 16,628 $ 8,343 $ 3,245 $ 5,098 Unrealized loss on cash flow hedge (2,331 ) (877 ) (1,454 ) (4,337 ) (1,673 ) (2,664 ) Funded status of defined benefit plans (82,007 ) (31,957 ) (50,050 ) (90,696 ) (35,281 ) (55,415 ) Total $ (57,412 ) $ (22,536 ) $ (34,876 ) $ (86,690 ) $ (33,709 ) $ (52,981 ) The following table highlights changes in accumulated other comprehensive income (loss) by component for the three and nine months ended September 30, 2015 and September 30, 2014 : Three months ended September 30, 2015 (Dollars in thousands) Unrealized gains (losses) on available for sale securities 1 Gains (losses) on cash flow hedges 1 Defined benefit pension items 1 Total Beginning balance $ 2,604 $ (1,875 ) $ (51,888 ) $ (51,159 ) Other comprehensive income (loss) before reclassifications 17,494 421 — 17,915 Amounts reclassified from accumulated other comprehensive (loss) income (3,470 ) — 1,838 (1,632 ) Net current period other comprehensive income 14,024 421 1,838 16,283 Ending balance $ 16,628 $ (1,454 ) $ (50,050 ) $ (34,876 ) Three months ended September 30, 2014 Unrealized gains (losses) on available for sale securities 1 Gains (losses) on cash flow hedges 1 Defined benefit pension items 1 Total Beginning balance $ 16,490 $ (3,643 ) $ (8,790 ) $ 4,057 Other comprehensive (loss) income before reclassifications (7,000 ) 582 — (6,418 ) Amounts reclassified from accumulated other comprehensive income (loss) — — 503 503 Net current period other comprehensive (loss) income (7,000 ) 582 503 (5,915 ) Ending balance $ 9,490 $ (3,061 ) $ (8,287 ) $ (1,858 ) Nine months ended September 30, 2015 Unrealized gains (losses) on available for sale securities 1 Gains (losses) on cash flow hedges 1 Defined benefit pension items 1 Total Beginning balance $ 5,098 $ (2,664 ) $ (55,415 ) $ (52,981 ) Other comprehensive income before reclassifications 18,222 1,210 — 19,432 Amounts reclassified from accumulated other comprehensive (loss) income (6,692 ) — 5,365 (1,327 ) Net current period other comprehensive income 11,530 1,210 5,365 18,105 Ending balance $ 16,628 $ (1,454 ) $ (50,050 ) $ (34,876 ) Nine months ended September 30, 2014 Unrealized gains (losses) on available for sale securities 1 Gains (losses) on cash flow hedges 1 Defined benefit pension items 1 Total Beginning balance $ (10,091 ) $ (4,434 ) $ (10,743 ) $ (25,268 ) Other comprehensive income before reclassifications 19,581 1,373 — 20,954 Amounts reclassified from accumulated other comprehensive loss — — 2,456 2,456 Net current period other comprehensive income 19,581 1,373 2,456 23,410 Ending balance $ 9,490 $ (3,061 ) $ (8,287 ) $ (1,858 ) 1 All amounts are net of tax. Amounts in parentheses indicate debits. The following table presents the amounts reclassified from accumulated other comprehensive income (loss) and the line item affected in the statement where net income is presented for the nine months ended September 30, 2015 and September 30, 2014 : (Dollars in thousands) Three months ended September 30, 2015 Details about accumulated other comprehensive income (loss) Amount reclassified from accumulated other comprehensive income (loss) 1 Affected line item in the statement where net income is presented Unrealized gains and losses on available for sale securities $ 5,564 Securities gains (2,094 ) Income taxes $ 3,470 Net income Amortization of defined benefit pension items Prior service costs $ (53 ) Employee benefits Actuarial losses (2,863 ) Employee benefits (2,916 ) Employee benefits 1,078 Income taxes $ (1,838 ) Net income Total reclassifications for the period $ 1,632 Three months ended September 30, 2014 Details about accumulated other comprehensive income (loss) Amount reclassified from accumulated other comprehensive income (loss) 1 Affected line item in the statement where net income is presented Amortization of defined benefit pension items Prior service costs $ (53 ) Employee benefits Actuarial losses (769 ) Employee benefits (822 ) Employee benefits 319 Income taxes $ (503 ) Net income Total reclassifications for the period $ (503 ) Nine months ended September 30, 2015 Details about accumulated other comprehensive income (loss) Amount reclassified from accumulated other comprehensive income (loss) 1 Affected line item in the statement where net income is presented Unrealized gains and losses on available for sale securities $ 10,837 Securities gains (4,145 ) Income taxes $ 6,692 Net income Amortization of defined benefit pension items Prior service costs $ (158 ) Employee benefits Actuarial losses (8,531 ) Employee benefits (8,689 ) Employee benefits 3,324 Income taxes $ (5,365 ) Net income Total reclassifications for the period $ 1,327 Nine months ended September 30, 2014 Details about accumulated other comprehensive icnome (loss) Amount reclassified from accumulated other comprehensive income (loss) 1 Affected line item in the statement where net income is presented Amortization of defined benefit pension items Prior service costs $ (158 ) Employee benefits Actuarial losses (3,861 ) Employee benefits (4,019 ) Employee benefits 1,563 Income taxes $ (2,456 ) Net income Total reclassifications for the period $ (2,456 ) 1 Amounts in parentheses indicate debits to profit/loss.

Accounting Policies and Basis24

Accounting Policies and Basis of Presentation Policies (Policies)	9 Months Ended
	Sep. 30, 2015
Accounting Policies [Abstract]
Reclassification, Policy [Policy Text Block]	Reclassifications Prior period financial statements reflect the retrospective application of Accounting Standards Update (ASU) 2014-01, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments Qualified Affordable Housing Projects which was adopted effective in the fourth quarter of 2014 and did not have a material impact on our consolidated financial condition or results of operations. In certain instances other than the retrospective adoption of ASU 2014-01, amounts reported in prior years' consolidated financial statements have been reclassified to conform to the current financial statement presentation. Such reclassifications had no effect on previously reported shareholders' equity or net income.
Use of Estimates, Policy [Policy Text Block]	Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities as of the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates, and different assumptions in the application of these policies could result in material changes in BancShares' consolidated financial position, the consolidated results of its operations or related disclosures. Material estimates that are particularly susceptible to significant change include: • Allowance for loan and lease losses • Fair value of financial instruments, including acquired assets and assumed liabilities • Pension plan assumptions • Cash flow estimates on purchased credit-impaired loans • Receivable from and payable to the FDIC for loss share agreements • Income tax assets, liabilities and expense
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Adopted Accounting Pronouncements Financial Accounting Standards Board (FASB) Accounting Standards Update (ASU) 2015-10, Technical Corrections and Improvements The amendments in this ASU represent changes to clarify the Codification, correct unintended application of guidance and make minor improvements to the Codification that are not expected to have a significant effect on current accounting practice or create a significant administrative cost to most entities. Additionally, some of the amendments will make the Codification easier to understand and easier to apply by eliminating inconsistencies, providing needed clarifications, and improving the presentation of guidance in the Codification. The transition guidance varies based on the amendments in this ASU. The amendments in this ASU that require transition guidance are effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted, including adoption in an interim period. All other amendments were effective upon issuance. We adopted the amendments effective second quarter of 2015. The adoption did not have an impact on our consolidated financial position or consolidated results of operations. FASB ASU 2015-08, Business Combinations (Topic 805): Pushdown Accounting - Amendments to Securities and Exchange Commission (SEC) Paragraphs Pursuant to Staff Accounting Bulletin No. 115 The amendments in this ASU remove references to SEC Staff Accounting Bulletin (SAB) Topic 5.J as the SEC staff previously rescinded its guidance with the issuance of SAB No. 115 when the FASB issued its own pushdown accounting guidance in ASU 2014-17, an amendment we adopted effective fourth quarter of 2014. We adopted the amendments in ASU 2015-08 effective second quarter of 2015. The adoption did not have an impact on our consolidated financial position or consolidated results of operations. FASB ASU 2014-14, Receivables - Troubled Debt Restructurings by Creditors (Subtopic 310-40): Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure This ASU requires a reporting entity to derecognize a mortgage loan and recognize a separate other receivable upon foreclosure if the following conditions are met: the loan has a government guarantee that is not separable from the loan before foreclosure; at the time of foreclosure, the creditor has the intent to convey the real estate property to the guarantor and make a claim on the guarantee, and the creditor has the ability to recover under that claim and at the time of foreclosure, any amount of the claim that is determined on the basis of the fair value of the real estate is fixed. Upon foreclosure, the separate other receivable should be measured based on the amount of the loan balance expected to be recovered from the guarantor. The amendments in this ASU were effective for public business entities for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. We adopted this guidance effective first quarter of 2015. The initial adoption did not have any effect on our consolidated financial position or consolidated results of operations. FASB ASU 2014-11, Transfers and Servicing (Topic 860) This ASU aligns the accounting for repurchase-to-maturity transactions and repurchase agreements executed as a repurchase financing with the accounting for other typical repurchase agreements. Going forward, these transactions would all be accounted for as secured borrowings. The guidance eliminates sale accounting for repurchase-to-maturity transactions and supersedes the guidance under which a transfer of a financial asset and a contemporaneous repurchase financing could be accounted for on a combined basis as a forward agreement, which has resulted in outcomes referred to as off-balance-sheet accounting. The ASU requires a new disclosure for transactions economically similar to repurchase agreements in which the transferor retains substantially all of the exposure to the economic return on the transferred financial assets throughout the term of the transaction. The ASU also requires expanded disclosures about the nature of collateral pledged in repurchase agreements and similar transactions accounted for as secured borrowings. The accounting changes in this ASU were effective for fiscal years beginning after December 15, 2014. In addition, the disclosures for certain transactions accounted for as a sale were effective for the fiscal period beginning after December 15, 2014, while the disclosures for transactions accounted for as secured borrowings were required to be presented for fiscal periods beginning after December 15, 2014, and interim periods beginning after March 15, 2015. We adopted the guidance effective first quarter of 2015. The initial adoption did not have any effect on our consolidated financial position or consolidated results of operations. The new disclosures required by this ASU are included in Note I . FASB ASU 2014-04, Receivables-Troubled Debt Restructurings by Creditors (Subtopic 310-40) This ASU clarifies that an in-substance repossession or foreclosure occurs, and a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either (1) the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or (2) the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. Additionally, the amendments require interim and annual disclosure of both (1) the amount of foreclosed residential real estate property held by the creditor and (2) the recorded investment in consumer mortgage loans collateralized by residential real estate property that are in the process of foreclosure according to local requirements of the applicable jurisdiction. The amendments in this ASU were effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. We adopted the guidance effective first quarter of 2015. The initial adoption did not have any effect on our consolidated financial position or consolidated results of operations. The new disclosures required by this ASU are included in Note F. FASB ASU 2014-01, Investments - Equity Method and Joint Ventures (Topic 323) - Accounting for Investments in Qualified Affordable Housing Projects This ASU permits an accounting policy election to account for investments in qualified affordable housing projects (LIHTC) using the proportional amortization method if certain conditions are met. Under the proportional amortization method, the initial cost of the investment is amortized in proportion to the tax credits and other tax benefits received and recognize the net investment performance in the income statement as a component of income tax expense (benefit). For those investments in qualified affordable housing projects not accounted for using the proportional amortization method, the investment should be accounted for as an equity method investment or a cost method investment in accordance with Accounting Standards Codification (ASC) 970-323. The decision to apply the proportional amortization method of accounting will be applied consistently to all qualifying affordable housing project investments rather than a decision to be applied to individual investments. BancShares early adopted the guidance effective in the fourth quarter of 2014. Previously, LIHTC investments were accounted for under the cost or equity method, and the amortization was recorded as a reduction to other noninterest income, with the tax credits and other benefits received recorded as a component of the provision for income taxes. BancShares believes the proportional amortization method better represents the economics of LIHTC investments and provides users with a better understanding of the returns from such investments than the cost or equity method. LIHTC investments were $74.5 million and $57.1 million at September 30, 2015 and December 31, 2014 , respectively, and are included in "other assets" on the Consolidated Balance Sheets. The cumulative effect of the retrospective application of the change in amortization method was a $2.4 million decrease to both "other assets" and "retained earnings" on the Consolidated Balance Sheets as of January 1, 2012. Under the new amortization method of accounting, amortization expense is recognized in income tax expense in the Consolidated Statements of Income and is offset by the tax effect of tax losses and tax credits received from the investments. This change resulted in a reclassification of expense previously recorded as a reduction in other noninterest income to income tax expense along with additional amortization recognized under the new method of accounting in the Consolidated Statements of Income. An additional change resulting from the new amortization method of accounting was that a deferred tax asset or liability no longer exists as a result of these investments, thus in the retrospective application of the new method, the removal of the deferred tax asset previously reported as well as the additional amortization of the investments, both recorded in other assets, reflected in the Consolidated Balance Sheets were removed. We do not believe the impact of this change in accounting principle is material. Recently Issued Accounting Pronouncements FASB ASU 2015-03, Interest–Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs This ASU simplifies the presentation of debt issuance costs by requiring that debt issuance costs be presented in the balance sheet as a direct deduction from the carrying amount of debt liability, consistent with debt discounts or premiums. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this update. This ASU is effective for interim and annual periods beginning after December 15, 2015 for public business entities, and is to be applied retrospectively. Early adoption is permitted. We will adopt the guidance effective in the first quarter of 2016 and do not anticipate any impact on our consolidated financial position or consolidated results of operations as a result of adoption. FASB ASU 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis This ASU improves targeted areas of consolidation guidance for reporting organizations that are required to evaluate whether they should consolidate certain legal entities. In addition to reducing the number of consolidation models from four to two, the new standard places more emphasis on risk of loss when determining a controlling financial interest, reducing the frequency of the application of related-party guidance when determining a controlling financial interest in a variable interest entity ("VIE"), and changing consolidation conclusions for public and private companies in several industries that typically make use of limited partnerships or VIEs. The amendments in this ASU are effective for periods beginning after December 15, 2015 for public business entities. Early adoption is permitted. We will adopt the guidance effective in the first quarter of 2016 and do not anticipate any significant impact on our consolidated financial position or consolidated results of operations as a result of adoption. FASB ASU 2014-09, Revenue from Contracts with Customers (Topic 606) In May 2014, the FASB issued a standard on the recognition of revenue from contracts with customers with the core principle being for companies to recognize revenue to depict the transfer of goods or services to customers in amounts that reflect the consideration to which the company expects to be entitled in exchange for those goods or services. The new standard also results in enhanced disclosures about revenue, provides guidance for transactions that were not previously addressed comprehensively and improves guidance for multiple-element arrangements. Per ASU 2015-14, Deferral of the Effective Date , this guidance was deferred and is effective for fiscal periods beginning after December 15, 2017, including interim reporting periods within that reporting period. Early adoption is permitted for fiscal periods beginning after December 15, 2016. We are currently evaluating the impact of the new standard and we will adopt during the first quarter of 2018 using one of two retrospective application methods.

Business Combinations Business

Business Combinations Business Combinations (Tables)	9 Months Ended
Business Combinations Business Combinations (Tables)	Sep. 30, 2015
Business Combinations [Abstract]
Pro Forma Financial Information for Bancorporation Acquisition	Three months ended September 30 Nine months ended September 30 (Dollars in thousands) 2014 2014 Total revenue (interest income plus noninterest income) $ 341,927 $ 995,704 Net loss $ (127,768 ) $ (50,279 ) The merger transaction between BancShares and Bancorporation constituted a triggering event for which Bancorporation undertook a goodwill impairment assessment. Based on the analysis performed, Bancorporation determined that its fair value did not support the goodwill recorded; therefore, Bancorporation recorded a $166.8 million goodwill impairment charge to write-off a portion of goodwill prior to the October 1, 2014 effective date of the merger. This goodwill impairment is included in the pro forma financial results for the quarter and nine months ended September 30, 2014.
Schedule of assets acquired and liabilities assumed	The following table provides the identifiable assets acquired and liabilities assumed at their estimated fair values as of the acquisition date. (Dollars in thousands) As recorded by FCB Assets Cash and cash equivalents $ 19,622 Investment securities 35,413 Loans 154,496 Intangible assets 690 Other assets 1,714 Total assets acquired 211,935 Liabilities Deposits 266,352 Short-term borrowings 5,501 Other liabilities 667 Total liabilities assumed 272,520 Fair value of net liabilities assumed (60,585 ) Cash received from FDIC 103,515 Gain on acquisition of CCBT $ 42,930

Investments (Tables)

Investments (Tables)	9 Months Ended
Investments (Tables)	Sep. 30, 2015
Investments [Abstract]
Aggregate Values And Unrealized Gains And Losses Of Investment Securities	The amortized cost and fair value of investment securities classified as available for sale and held to maturity at September 30, 2015 and December 31, 2014 , are as follows: September 30, 2015 (Dollars in thousands) Cost Gross unrealized gains Gross unrealized losses Fair value Investment securities available for sale U.S. Treasury $ 1,685,794 $ 5,708 $ — $ 1,691,502 Government agency 633,162 1,742 — 634,904 Mortgage-backed securities 4,343,105 26,375 6,919 4,362,561 Equity securities 1,591 20 — 1,611 Total investment securities available for sale $ 6,663,652 $ 33,845 $ 6,919 $ 6,690,578 December 31, 2014 Cost Gross Gross unrealized Fair U.S. Treasury $ 2,626,900 $ 2,922 $ 152 $ 2,629,670 Government agency 908,362 702 247 908,817 Mortgage-backed securities 3,628,187 16,964 11,847 3,633,304 Municipal securities 125 1 — 126 Total investment securities available for sale $ 7,163,574 $ 20,589 $ 12,246 $ 7,171,917 September 30, 2015 Cost Gross Gross unrealized Fair Investment securities held to maturity Mortgage-backed securities $ 301 $ 13 $ — $ 314 December 31, 2014 Cost Gross Gross unrealized Fair Mortgage-backed securities $ 518 $ 26 $ — $ 544
Investment Securities Maturity Information	The following table provides the amortized cost and fair value by contractual maturity. Expected maturities will differ from contractual maturities on certain securities because borrowers and issuers may have the right to call or prepay obligations with or without prepayment penalties. Repayments of mortgage-backed securities are dependent on the repayments of the underlying loan balances. September 30, 2015 December 31, 2014 (Dollars in thousands) Cost Fair value Cost Fair value Investment securities available for sale Non-amortizing securities maturing in: One year or less $ 673,879 $ 675,164 $ 447,866 $ 447,992 One through five years 1,645,077 1,651,242 3,087,521 3,090,621 Mortgage-backed securities 4,343,105 4,362,561 3,628,187 3,633,304 Equity securities 1,591 1,611 — — Total investment securities available for sale $ 6,663,652 $ 6,690,578 $ 7,163,574 $ 7,171,917 Investment securities held to maturity Mortgage-backed securities held to maturity $ 301 $ 314 $ 518 $ 544
Securities Gains (Losses)	For each period presented, securities gains (losses) included the following: Three months ended September 30 Nine months ended September 30 (Dollars in thousands) 2015 2014 2015 2014 Gross gains on sales of investment securities available for sale $ 5,564 $ — $ 10,850 $ — Gross losses on sales of investment securities available for sale — — (13 ) — Total net securities gain $ 5,564 $ — $ 10,837 $ —
Investment Securities With Unrealized Losses	The following table provides information regarding securities with unrealized losses as of September 30, 2015 and December 31, 2014 . September 30, 2015 Less than 12 months 12 months or more Total (Dollars in thousands) Fair value Unrealized losses Fair value Unrealized losses Fair value Unrealized losses Investment securities available for sale: Mortgage-backed securities $ 911,980 $ 3,024 $ 300,157 $ 3,895 $ 1,212,137 $ 6,919 Total $ 911,980 $ 3,024 $ 300,157 $ 3,895 $ 1,212,137 $ 6,919 December 31, 2014 Less than 12 months 12 months or more Total Fair Unrealized Fair Unrealized Fair Unrealized Investment securities available for sale: U.S. Treasury $ 338,612 $ 151 $ 1,015 $ 1 $ 339,627 $ 152 Government agency 261,288 247 — — 261,288 247 Mortgage-backed securities 573,374 1,805 831,405 10,042 1,404,779 11,847 Total $ 1,173,274 $ 2,203 $ 832,420 $ 10,043 $ 2,005,694 $ 12,246

Loans and Leases (Tables)

Loans and Leases (Tables)	9 Months Ended
Loans and Leases (Tables)	Sep. 30, 2015
Loans and Leases Receivable Disclosure [Abstract]
Loans And Leases Outstanding	Loans and leases outstanding included the following at September 30, 2015 and December 31, 2014 : (Dollars in thousands) September 30, 2015 December 31, 2014 Non-PCI loans and leases: Commercial: Construction and land development $ 563,926 $ 493,133 Commercial mortgage 8,076,946 7,552,948 Other commercial real estate 316,924 244,875 Commercial and industrial 2,211,973 1,988,934 Lease financing 691,915 571,916 Other 357,760 353,833 Total commercial loans 12,219,444 11,205,639 Noncommercial: Residential mortgage 2,659,821 2,493,058 Revolving mortgage 2,519,972 2,561,800 Construction and land development 220,493 205,016 Consumer 1,192,012 1,117,454 Total noncommercial loans 6,592,298 6,377,328 Total non-PCI loans and leases 18,811,742 17,582,967 PCI loans: Commercial: Construction and land development 41,582 78,079 Commercial mortgage 568,256 577,518 Other commercial real estate 18,013 40,193 Commercial and industrial 17,023 27,254 Other 2,087 3,079 Total commercial loans 646,961 726,123 Noncommercial: Residential mortgage 334,518 382,340 Revolving mortgage 59,695 74,109 Construction and land development 347 912 Consumer 2,543 3,014 Total noncommercial loans 397,103 460,375 Total PCI loans 1,044,064 1,186,498 Total loans and leases $ 19,855,806 $ 18,769,465
Composition Of The Loans And Leases Outstanding By Credit Quality Indicator	Non-PCI loans and leases outstanding at September 30, 2015 and December 31, 2014 by credit quality indicator are provided below: September 30, 2015 (Dollars in thousands) Non-PCI commercial loans and leases Grade: Construction and land development Commercial mortgage Other commercial real estate Commercial and industrial Lease financing Other Total non-PCI commercial loans and leases Pass $ 555,833 $ 7,821,706 $ 314,171 $ 2,070,568 $ 683,265 $ 354,222 $ 11,799,765 Special mention 5,606 107,790 285 16,812 5,161 1,828 137,482 Substandard 2,487 143,536 1,010 15,241 3,163 1,710 167,147 Doubtful — 647 — 1,544 326 — 2,517 Ungraded — 3,267 1,458 107,808 — — 112,533 Total $ 563,926 $ 8,076,946 $ 316,924 $ 2,211,973 $ 691,915 $ 357,760 $ 12,219,444 December 31, 2014 Non-PCI commercial loans and leases Construction and land Commercial Other Commercial and Lease financing Other Total non-PCI commercial loans and leases Pass $ 474,374 $ 7,284,714 $ 242,053 $ 1,859,415 $ 564,319 $ 349,111 $ 10,773,986 Special mention 13,927 129,247 909 27,683 3,205 1,384 176,355 Substandard 4,720 134,677 1,765 8,878 3,955 3,338 157,333 Doubtful — 2,366 — 164 365 — 2,895 Ungraded 112 1,944 148 92,794 72 — 95,070 Total $ 493,133 $ 7,552,948 $ 244,875 $ 1,988,934 $ 571,916 $ 353,833 $ 11,205,639 September 30, 2015 Non-PCI noncommercial loans and leases (Dollars in thousands) Residential mortgage Revolving mortgage Construction and land development Consumer Total non-PCI noncommercial Current $ 2,615,954 $ 2,503,750 $ 216,736 $ 1,181,710 $ 6,518,150 30-59 days past due 24,179 9,936 2,539 6,889 43,543 60-89 days past due 7,640 2,031 642 2,091 12,404 90 days or greater past due 12,048 4,255 576 1,322 18,201 Total $ 2,659,821 $ 2,519,972 $ 220,493 $ 1,192,012 $ 6,592,298 December 31, 2014 Non-PCI noncommercial loans and leases Residential Revolving Construction Consumer Total non-PCI noncommercial Current $ 2,454,797 $ 2,542,807 $ 202,344 $ 1,110,153 $ 6,310,101 30-59 days past due 23,288 11,097 1,646 4,577 40,608 60-89 days past due 6,018 2,433 824 1,619 10,894 90 days or greater past due 8,955 5,463 202 1,105 15,725 Total $ 2,493,058 $ 2,561,800 $ 205,016 $ 1,117,454 $ 6,377,328 PCI loans and leases outstanding at September 30, 2015 and December 31, 2014 by credit quality indicator are provided below: September 30, 2015 (Dollars in thousands) PCI commercial loans Grade: Construction and land development Commercial mortgage Other commercial real estate Commercial and industrial Other Total PCI commercial loans Pass $ 18,236 $ 302,848 $ 8,519 $ 10,744 $ 775 $ 341,122 Special mention 2,250 94,955 — 1,462 — 98,667 Substandard 16,806 159,148 9,048 4,395 1,312 190,709 Doubtful 4,290 10,967 — 292 — 15,549 Ungraded — 338 446 130 — 914 Total $ 41,582 $ 568,256 $ 18,013 $ 17,023 $ 2,087 $ 646,961 December 31, 2014 PCI commercial loans Construction Commercial Other Commercial Other Total PCI commercial Pass $ 13,514 $ 300,187 $ 11,033 $ 16,637 $ 801 $ 342,172 Special mention 6,063 98,724 16,271 4,137 — 125,195 Substandard 53,739 171,920 12,889 6,312 2,278 247,138 Doubtful 2,809 6,302 — 130 — 9,241 Ungraded 1,954 385 — 38 — 2,377 Total $ 78,079 $ 577,518 $ 40,193 $ 27,254 $ 3,079 $ 726,123 September 30, 2015 PCI noncommercial loans (Dollars in thousands) Residential Revolving Construction Consumer Total PCI noncommercial Current $ 286,402 $ 54,594 $ 347 $ 2,322 $ 343,665 30-59 days past due 14,514 1,234 — 90 15,838 60-89 days past due 6,103 307 — 131 6,541 90 days or greater past due 27,499 3,560 — — 31,059 Total $ 334,518 $ 59,695 $ 347 $ 2,543 $ 397,103 December 31, 2014 PCI noncommercial loans Residential Revolving Construction Consumer Total PCI noncommercial Current $ 326,589 $ 68,548 $ 506 $ 2,582 $ 398,225 30-59 days past due 11,432 1,405 — 147 12,984 60-89 days past due 10,073 345 — 25 10,443 90 days or greater past due 34,246 3,811 406 260 38,723 Total $ 382,340 $ 74,109 $ 912 $ 3,014 $ 460,375
Aging Of The Outstanding Loans And Leases By Class Excluding Loans Impaired At Acquisition Date	The aging of the outstanding non-PCI loans and leases, by class, at September 30, 2015 and December 31, 2014 is provided in the table below. The calculation of days past due begins on the day after payment is due and includes all days through which all required interest or principal has not been paid. Loans and leases 30 days or less past due are considered current as various grace periods allow borrowers to make payments within a stated period after the due date and still remain in compliance with the loan agreement. September 30, 2015 (Dollars in thousands) 30-59 days past due 60-89 days past due 90 days or greater Total past due Current Total loans and leases Non-PCI loans and leases: Construction and land development - commercial $ 1,319 $ 266 $ 282 $ 1,867 $ 562,059 $ 563,926 Commercial mortgage 14,587 4,897 21,416 40,900 8,036,046 8,076,946 Other commercial real estate 403 290 159 852 316,072 316,924 Commercial and industrial 5,492 961 1,328 7,781 2,204,192 2,211,973 Lease financing 398 169 310 877 691,038 691,915 Residential mortgage 24,179 7,640 12,048 43,867 2,615,954 2,659,821 Revolving mortgage 9,936 2,031 4,255 16,222 2,503,750 2,519,972 Construction and land development - noncommercial 2,539 642 576 3,757 216,736 220,493 Consumer 6,889 2,091 1,322 10,302 1,181,710 1,192,012 Other 11 — 184 195 357,565 357,760 Total non-PCI loans and leases $ 65,753 $ 18,987 $ 41,880 $ 126,620 $ 18,685,122 $ 18,811,742 December 31, 2014 30-59 days 60-89 days 90 days or greater Total past Current Total loans Non-PCI loans and leases: Construction and land development - commercial $ 520 $ 283 $ 330 $ 1,133 $ 492,000 $ 493,133 Commercial mortgage 11,367 4,782 8,061 24,210 7,528,738 7,552,948 Other commercial real estate 206 70 102 378 244,497 244,875 Commercial and industrial 2,843 1,545 378 4,766 1,984,168 1,988,934 Lease financing 1,631 8 2 1,641 570,275 571,916 Residential mortgage 23,288 6,018 8,955 38,261 2,454,797 2,493,058 Revolving mortgage 11,097 2,433 5,463 18,993 2,542,807 2,561,800 Construction and land development - noncommercial 1,646 824 202 2,672 202,344 205,016 Consumer 4,577 1,619 1,105 7,301 1,110,153 1,117,454 Other 146 1,966 — 2,112 351,721 353,833 Total non-PCI loans and leases $ 57,321 $ 19,548 $ 24,598 $ 101,467 $ 17,481,500 $ 17,582,967
Recorded Investment, By Class, In Loans And Leases On Nonaccrual Status And Loans And Leases Greater Than 90 Days Past Due And Still Accruing	The recorded investment, by class, in loans and leases on nonaccrual status, and loans and leases greater than 90 days past due and still accruing at September 30, 2015 and December 31, 2014 for non-PCI loans, were as follows: September 30, 2015 December 31, 2014 (Dollars in thousands) Nonaccrual loans and leases Loans and leases > 90 days and accruing Nonaccrual loans and leases Loans and leases > 90 days and accruing Non-PCI loans and leases: Construction and land development - commercial $ 617 $ 45 $ 343 $ 56 Commercial mortgage 41,607 3,353 24,720 1,003 Other commercial real estate 262 — 619 35 Commercial and industrial 6,633 502 1,741 239 Lease financing 374 — 374 2 Residential mortgage 24,911 1,444 14,242 3,191 Revolving mortgage 10,856 19 — 5,463 Construction and land development - noncommercial 875 — — 202 Consumer 1,008 863 — 1,059 Other 133 51 1,966 — Total non-PCI loans and leases $ 87,276 $ 6,277 $ 44,005 $ 11,250
Changes In Carrying Value Of PCI Loans	The recorded fair values of PCI loans acquired in the CCBT acquisition as of the acquisition date were as follows: (Dollars in thousands) Commercial: Construction and land development $ 4,116 Commercial mortgage 129,732 Other commercial real estate 3,202 Commercial and industrial 2,844 Total commercial loans 139,894 Noncommercial: Residential mortgage 13,251 Consumer 1,351 Total noncommercial loans 14,602 Total PCI loans and leases $ 154,496 The following table provides changes in the carrying value of all purchased credit-impaired loans during the nine months ended September 30, 2015 and September 30, 2014 : (Dollars in thousands) 2015 2014 Balance at January 1 $ 1,186,498 $ 1,029,426 Fair value of acquired loans 154,496 316,327 Accretion 91,642 89,775 Payments received and other changes, net (388,572 ) (439,248 ) Balance at September 30 $ 1,044,064 $ 996,280 Unpaid principal balance at September 30 $ 1,788,136 $ 1,754,882
Schedule of Contractually Required Payments Including Principal and Interest Expected Cash Flows to be Collected and Fair Values [Table Text Block]	The following table relates to PCI loans acquired in the CCBT acquisition and summarizes the contractually required payments, which include principal and interest, expected cash flows to be collected, and the fair value of PCI loans and leases at the acquisition date. (Dollars in thousands) Contractually required payments $ 247,812 Cash flows expected to be collected $ 207,688 Fair value of loans at acquisition $ 154,496
Changes In Carrying Value of Accretable Yield for PCI Loans	The following table documents changes to the amount of accretable yield for the first nine months of 2015 and 2014 . (Dollars in thousands) 2015 2014 Balance at January 1 $ 418,160 $ 439,990 Additions from acquisitions 53,192 84,295 Accretion (91,642 ) (89,775 ) Reclassifications from nonaccretable difference 15,687 1,374 Changes in expected cash flows that do not affect nonaccretable difference (53,458 ) (22,068 ) Balance at September 30 $ 341,939 $ 413,816

Allowance for Loan and Lease 28

Allowance for Loan and Lease Losses (Tables)	9 Months Ended
Allowance for Loan and Lease Losses (Tables)	Sep. 30, 2015
Loans and Leases Receivable, Allowance [Abstract]
Allowance for Loan and Lease Losses	The following tables present the activity in the ALLL for non-PCI loan and lease losses by loan class for the three months ended September 30, 2015 and September 30, 2014 : Three months ended September 30, 2015 (Dollars in thousands) Construction and land development - commercial Commercial mortgage Other commercial real estate Commercial and industrial Lease financing Other Residential mortgage Revolving mortgage Construction and land development - non- commercial Consumer Total Non-PCI Loans Allowance for loan and lease losses: Balance at July 1 $ 13,079 $ 80,436 $ 804 $ 39,392 $ 4,706 $ 1,188 $ 12,705 $ 17,290 $ 1,133 $ 22,116 $ 192,849 Provision 1,189 (5,664 ) 291 (799 ) 424 (58 ) 520 871 114 450 (2,662 ) Charge-offs (336 ) (411 ) — (784 ) (7 ) — (394 ) (677 ) — (2,409 ) (5,018 ) Recoveries 129 794 15 296 16 45 314 363 3 762 2,737 Balance at September 30 $ 14,061 $ 75,155 $ 1,110 $ 38,105 $ 5,139 $ 1,175 $ 13,145 $ 17,847 $ 1,250 $ 20,919 $ 187,906 Three months ended September 30, 2014 Construction and land development - commercial Commercial mortgage Other commercial real estate Commercial and industrial Lease financing Other Residential mortgage Revolving mortgage Construction and land development - non- commercial Consumer Total Balance at July 1 $ 11,116 $ 92,129 $ 806 $ 26,909 $ 4,365 $ 612 $ 9,301 $ 16,797 $ 905 $ 13,975 $ 176,915 Provision 1,469 (8,082 ) 61 4,361 (71 ) 127 15 2,075 21 1,758 1,734 Charge-offs — (277 ) — (1,414 ) (28 ) — (231 ) (925 ) (45 ) (2,467 ) (5,387 ) Recoveries 15 476 8 227 34 — 28 174 14 867 1,843 Balance at September 30 $ 12,600 $ 84,246 $ 875 $ 30,083 $ 4,300 $ 739 $ 9,113 $ 18,121 $ 895 $ 14,133 $ 175,105 Nine months ended September 30, 2015 Construction and land development - commercial Commercial mortgage Other commercial real estate Commercial and industrial Lease financing Other Residential mortgage Revolving mortgage Construction and land development - non- commercial Consumer Total Balance at January 1 $ 11,961 $ 85,189 $ 732 $ 30,727 $ 4,286 $ 3,184 $ 10,661 $ 18,650 $ 892 $ 16,555 $ 182,837 Provision 2,380 (11,221 ) 522 11,294 843 (2,100 ) 2,495 440 306 10,029 14,988 Charge-offs (575 ) (691 ) (178 ) (4,815 ) (28 ) — (768 ) (2,086 ) (22 ) (7,935 ) (17,098 ) Recoveries 295 1,878 34 899 38 91 757 843 74 2,270 7,179 Balance at September 30 $ 14,061 $ 75,155 $ 1,110 $ 38,105 $ 5,139 $ 1,175 $ 13,145 $ 17,847 $ 1,250 $ 20,919 $ 187,906 Nine months ended September 30, 2014 Construction and land development - commercial Commercial mortgage Other commercial real estate Commercial and industrial Lease financing Other Residential mortgage Revolving mortgage Construction and land development - non- commercial Consumer Total Balance at January 1 $ 10,335 $ 100,257 $ 1,009 $ 22,362 $ 4,749 $ 190 $ 10,511 $ 16,239 $ 681 $ 13,541 $ 179,874 Provision 2,219 (17,021 ) (167 ) 9,369 (420 ) 562 (933 ) 4,681 274 5,770 4,334 Charge-offs — (718 ) — (2,440 ) (100 ) (13 ) (649 ) (3,249 ) (138 ) (7,271 ) (14,578 ) Recoveries 46 1,728 33 792 71 — 184 450 78 2,093 5,475 Balance at September 30 $ 12,600 $ 84,246 $ 875 $ 30,083 $ 4,300 $ 739 $ 9,113 $ 18,121 $ 895 $ 14,133 $ 175,105 The following tables provide information on non-PCI impaired loans and leases, exclusive of loans and leases evaluated collectively as a homogenous group, as of September 30, 2015 and December 31, 2014 including interest income recognized in the period during which the loans and leases were considered impaired. September 30, 2015 (Dollars in thousands) With a recorded allowance With no recorded allowance Total Unpaid Related allowance recorded Non-PCI impaired loans and leases: Construction and land development - commercial $ 1,799 $ 1,395 $ 3,194 $ 4,594 $ 417 Commercial mortgage 42,562 50,183 92,745 100,914 4,007 Other commercial real estate 312 124 436 868 295 Commercial and industrial 5,352 11,043 16,395 19,608 1,154 Lease financing 1,610 298 1,908 1,908 291 Other 1,464 — 1,464 1,540 67 Residential mortgage 9,746 9,945 19,691 21,559 1,158 Revolving mortgage 2,852 2,134 4,986 6,137 526 Construction and land development - noncommercial 1,045 — 1,045 1,045 78 Consumer 877 221 1,098 1,134 498 Total non-PCI impaired loans and leases $ 67,619 $ 75,343 $ 142,962 $ 159,307 $ 8,491 December 31, 2014 (Dollars in thousands) With a With no Total Unpaid Related Non-PCI impaired loans and leases: Construction and land development - commercial $ 996 $ 624 $ 1,620 $ 6,945 $ 92 Commercial mortgage 57,324 25,479 82,803 87,702 8,610 Other commercial real estate 112 472 584 913 112 Commercial and industrial 10,319 721 11,040 12,197 1,743 Lease financing 319 304 623 623 150 Other 2,000 — 2,000 2,000 1,972 Residential mortgage 10,198 4,715 14,913 15,746 1,360 Revolving mortgage 3,675 — 3,675 4,933 1,052 Construction and land development - noncommercial 1,077 263 1,340 1,340 71 Consumer 987 8 995 1,067 555 Total non-PCI impaired loans and leases $ 87,007 $ 32,586 $ 119,593 $ 133,466 $ 15,717 The following tables show the average non-PCI impaired loan balance and the interest income recognized by loan class for the three and nine months ended September 30, 2015 and September 30, 2014 : Three months ended September 30, 2015 Three months ended September 30, 2014 (Dollars in thousands) Average Interest income recognized Average Interest income recognized Non-PCI impaired loans and leases: Construction and land development - commercial $ 3,257 $ 37 $ 2,296 $ 26 Commercial mortgage 99,613 803 90,318 806 Other commercial real estate 539 6 1,980 7 Commercial and industrial 17,005 130 11,699 108 Lease financing 1,939 21 312 5 Other 1,543 20 42 1 Residential mortgage 19,945 141 15,071 111 Revolving mortgage 5,064 29 3,708 29 Construction and land development - noncommercial 1,027 12 1,942 27 Consumer 1,176 19 1,063 19 Total non-PCI impaired loans and leases $ 151,108 $ 1,218 $ 128,431 $ 1,139 Nine months ended September 30, 2015 Nine months ended September 30, 2014 (Dollars in thousands) Average balance Interest income recognized Average Interest income recognized Non-PCI impaired loans and leases: Construction and land development - commercial $ 3,148 $ 107 $ 1,701 $ 57 Commercial mortgage 88,614 2,405 86,131 2,522 Other commercial real estate 498 7 2,474 67 Commercial and industrial 13,815 379 14,227 461 Lease financing 1,664 55 589 26 Other 1,789 20 29 2 Residential mortgage 17,376 401 15,525 395 Revolving mortgage 4,022 68 4,069 105 Construction and land development - noncommercial 821 28 1,902 77 Consumer 1,117 58 1,710 70 Total non-PCI impaired loans and leases $ 132,864 $ 3,528 $ 128,357 $ 3,782 The following tables show the activity in the allowance for PCI loan and lease losses by loan class for the three months and nine months ended September 30, 2015 and September 30, 2014 . Three months ended September 30, 2015 (Dollars in thousands) Construction and land development - commercial Commercial mortgage Other commercial real estate Commercial and industrial Residential mortgage Revolving mortgage Construction and land development - noncommercial Consumer and other Total PCI Loans Allowance for loan and lease losses: Balance at July 1 $ 569 $ 6,428 $ 69 $ 323 $ 5,842 $ 2,051 $ — $ 186 $ 15,468 Provision 632 2,187 235 118 (281 ) (151 ) — 29 2,769 Charge-offs — (48 ) (39 ) (15 ) (577 ) — (1 ) (680 ) Recoveries — — — — — — — — — Balance at September 30 $ 1,201 $ 8,567 $ 304 $ 402 $ 5,546 $ 1,323 $ — $ 214 $ 17,557 Three months ended September 30, 2014 (Dollars in thousands) Construction and land development - commercial Commercial mortgage Other commercial real estate Commercial and industrial Residential mortgage Revolving mortgage Construction and land development - noncommercial Consumer and other Total Balance at July 1 $ 3,803 $ 17,315 $ 407 $ 375 $ 7,093 $ 81 $ — $ 257 $ 29,331 Provision (1,815 ) (2,374 ) (435 ) 182 187 3,899 239 (80 ) (197 ) Charge-offs (1,633 ) (2,357 ) 106 839 (188 ) (1 ) (83 ) (17 ) (3,334 ) Recoveries — — — — — — — — — Balance at September 30 $ 355 $ 12,584 $ 78 $ 1,396 $ 7,092 $ 3,979 $ 156 $ 160 $ 25,800 Nine months ended September 30, 2015 (Dollars in thousands) Construction and land development - commercial Commercial mortgage Other commercial real estate Commercial and industrial Residential mortgage Revolving mortgage Construction and land development - noncommercial Consumer and other Total Balance at January 1 $ 150 $ 10,135 $ 75 $ 1,240 $ 5,820 $ 3,999 $ 183 $ 27 $ 21,629 Provision 1,148 (803 ) 229 (514 ) 21 (1,918 ) (183 ) 650 (1,370 ) Charge-offs (97 ) (765 ) — (324 ) (295 ) (758 ) — (463 ) (2,702 ) Recoveries — — — — — — — — — Balance at September 30 $ 1,201 $ 8,567 $ 304 $ 402 $ 5,546 $ 1,323 $ — $ 214 $ 17,557 Nine months ended September 30, 2014 (Dollars in thousands) Construction Commercial Other Commercial Residential Revolving Construction Consumer Total Balance at January 1 $ 1,320 $ 29,906 $ 1,354 $ 5,275 $ 11,802 $ 2,959 $ 682 $ 222 $ 53,520 Provision 1,463 (6,946 ) (1,382 ) (1,883 ) (4,289 ) 1,502 (443 ) (21 ) (11,999 ) Charge-offs (2,428 ) (10,376 ) 106 (1,996 ) (421 ) (482 ) (83 ) (41 ) (15,721 ) Recoveries — — — — — — — — — Balance at September 30 $ 355 $ 12,584 $ 78 $ 1,396 $ 7,092 $ 3,979 $ 156 $ 160 $ 25,800
Allocation of Allowance for Loan and Lease Losses	The following tables show the ending balances of PCI loans and leases and related allowance by class of loans as of September 30, 2015 and December 31, 2014 : September 30, 2015 (Dollars in thousands) Construction Commercial Other Commercial Residential Revolving Construction Consumer Total ALLL for loans and leases acquired with deteriorated credit quality $ 1,201 $ 8,567 $ 304 $ 402 $ 5,546 $ 1,323 $ — $ 214 $ 17,557 Loans and leases acquired with deteriorated credit quality 41,582 568,256 18,013 17,023 334,518 59,695 347 4,630 1,044,064 December 31, 2014 (Dollars in thousands) Construction Commercial Other Commercial Residential Revolving Construction Consumer Total ALLL for loans and leases acquired with deteriorated credit quality $ 150 $ 10,135 $ 75 $ 1,240 $ 5,820 $ 3,999 $ 183 $ 27 $ 21,629 Loans and leases acquired with deteriorated credit quality 78,079 577,518 40,193 27,254 382,340 74,109 912 6,093 1,186,498 The following tables present the allowance for non-PCI loan losses and the recorded investment in loans, by loan class, based on impairment method as of September 30, 2015 and December 31, 2014 : September 30, 2015 (Dollars in thousands) Construction and land development - commercial Commercial mortgage Other commercial real estate Commercial and industrial Lease financing Other Residential mortgage Revolving mortgage Construction and land development - non-commercial Consumer Total Allowance for loan and lease losses: ALLL for loans and leases individually evaluated for impairment $ 417 $ 4,007 $ 295 $ 1,154 $ 291 $ 67 $ 1,158 $ 526 $ 78 $ 498 $ 8,491 ALLL for loans and leases collectively evaluated for impairment 13,644 71,148 815 36,951 4,848 1,108 11,987 17,321 1,172 20,421 179,415 Total allowance for loan and lease losses $ 14,061 $ 75,155 $ 1,110 $ 38,105 $ 5,139 $ 1,175 $ 13,145 $ 17,847 $ 1,250 $ 20,919 $ 187,906 Loans and leases: Loans and leases individually evaluated for impairment $ 3,194 $ 92,745 $ 436 $ 16,395 $ 1,908 $ 1,464 $ 19,691 $ 4,986 $ 1,045 $ 1,098 $ 142,962 Loans and leases collectively evaluated for impairment 560,732 7,984,201 316,488 2,195,578 690,007 356,296 2,640,130 2,514,986 219,448 1,190,914 18,668,780 Total loan and leases $ 563,926 $ 8,076,946 $ 316,924 $ 2,211,973 $ 691,915 $ 357,760 $ 2,659,821 $ 2,519,972 $ 220,493 $ 1,192,012 $ 18,811,742 December 31, 2014 (Dollars in thousands) Construction Commercial Other Commercial and industrial Lease Other Residential Revolving Construction Consumer Total Allowance for loan and lease losses: ALLL for loans and leases individually evaluated for impairment $ 92 $ 8,610 $ 112 $ 1,743 $ 150 $ 1,972 $ 1,360 $ 1,052 $ 71 $ 555 $ 15,717 ALLL for loans and leases collectively evaluated for impairment 11,869 76,579 620 28,984 4,136 1,212 9,301 17,598 821 16,000 167,120 Total allowance for loan and lease losses $ 11,961 $ 85,189 $ 732 $ 30,727 $ 4,286 $ 3,184 $ 10,661 $ 18,650 $ 892 $ 16,555 $ 182,837 Loans and leases: Loans and leases individually evaluated for impairment $ 1,620 $ 82,803 $ 584 $ 11,040 $ 623 $ 2,000 $ 14,913 $ 3,675 $ 1,340 $ 995 $ 119,593 Loans and leases collectively evaluated for impairment 491,513 7,470,145 244,291 1,977,894 571,293 351,833 2,478,145 2,558,125 203,676 1,116,459 17,463,374 Total loan and leases $ 493,133 $ 7,552,948 $ 244,875 $ 1,988,934 $ 571,916 $ 353,833 $ 2,493,058 $ 2,561,800 $ 205,016 $ 1,117,454 $ 17,582,967
Troubled Debt Restructurings on Financing Receivables	The following table provides a summary of total TDRs by accrual status. September 30, 2015 December 31, 2014 (Dollars in thousands) Accruing Nonaccruing Total Accruing Nonaccruing Total Commercial loans Construction and land development - $ 3,479 $ 630 $ 4,109 $ 2,591 $ 446 $ 3,037 Commercial mortgage 71,885 12,884 84,769 92,184 8,937 101,121 Other commercial real estate 1,889 95 1,984 2,374 449 2,823 Commercial and industrial 9,733 4,122 13,855 9,864 664 10,528 Lease 1,082 326 1,408 258 365 623 Other — — — 34 — 34 Total commercial TDRs 88,068 18,057 106,125 107,305 10,861 118,166 Noncommercial Residential mortgage 24,103 7,000 31,103 22,597 4,655 27,252 Revolving mortgage 3,592 1,313 4,905 3,675 — 3,675 Construction and land development - 1,045 — 1,045 1,391 — 1,391 Consumer and other 2,454 87 2,541 995 — 995 Total noncommercial TDRs 31,194 8,400 39,594 28,658 4,655 33,313 Total TDRs $ 119,262 $ 26,457 $ 145,719 $ 135,963 $ 15,516 $ 151,479 The majority of TDRs are included in the special mention, substandard or doubtful grading categories. When a restructured loan subsequently defaults, it is evaluated and downgraded if appropriate. The more severely graded the loan, the lower the estimated expected cash flows and the greater the allowance recorded. Further, TDRs over $500,000 and graded substandard or lower are evaluated individually for impairment through a review of collateral values or analysis of cash flow. The following table shows the accrual status of non-PCI and PCI TDRs. (Dollars in thousands) September 30, 2015 December 31, 2014 Accruing TDRs: PCI $ 32,370 $ 44,647 Non-PCI 86,892 91,316 Total accruing TDRs 119,262 135,963 Nonaccruing TDRs: PCI 717 2,225 Non-PCI 25,740 13,291 Total nonaccruing TDRs 26,457 15,516 All TDRs: PCI 33,087 46,872 Non-PCI 112,632 104,607 Total TDRs $ 145,719 $ 151,479 Three months ended September 30, 2015 Three months ended September 30, 2014 All restructurings Restructurings with payment default All restructurings Restructurings with payment default (Dollars in thousands) Number of Loans Recorded investment at period end Number of Loans Recorded investment at period end Number of Loans Recorded investment at period end Number of Loans Recorded investment at period end Non-PCI loans and leases Interest only period provided Construction and land development - noncommercial 1 $ 92 — $ — — $ — — $ — Total interest only 1 92 — — — — — — Loan term extension Commercial mortgage 1 75 — — 1 462 — — Commercial and industrial 3 1,445 — — — — — — Residential mortgage — — — — 3 80 — — Construction and land development - noncommercial — — — — 2 141 — — Consumer — — — — 2 81 — — Total loan term extension 4 1,520 — — 8 764 — — Below market interest rate Construction and land development - commercial 4 193 — — — — — — Commercial mortgage 8 1,248 — — 6 3,062 1 176 Commercial and industrial 3 1,797 1 1,757 3 462 — — Other commercial real estate 2 124 — — — — — — Residential mortgage 25 1,592 4 158 11 609 1 45 Revolving mortgage 1 37 — — — — — — Construction and land development - noncommercial — — — — 3 173 — — Consumer 2 17 — — 5 162 — — Total below market interest rate 45 5,008 5 1,915 28 4,468 2 221 Discharged from bankruptcy Construction and land development - commercial 2 21 — — — — — — Commercial mortgage 2 965 1 275 1 — 1 — Commercial and industrial 2 148 — — — — — — Residential mortgage 6 395 — — — — — — Revolving mortgage 9 666 2 162 2 99 1 — Construction and land development-noncommercial — — — — — — 1 62 Consumer 6 91 2 39 1 13 — — Total discharged from bankruptcy 27 2,286 5 476 4 112 3 62 Total non-PCI restructurings 77 $ 8,906 10 $ 2,391 40 $ 5,344 5 $ 283 Nine months ended September 30, 2015 Nine months ended September 30, 2014 All restructurings Restructurings with payment default All restructurings Restructurings with payment default (Dollars in thousands) Number of Loans Recorded investment at period end Number of Loans Recorded investment at period end Number of Loans Recorded investment at period end Number of Loans Recorded investment at period end Non-PCI loans and leases Interest only period provided Commercial mortgage 2 $ 68 — $ — 6 $ 2,449 2 $ 592 Commercial and industrial 2 1,112 1 — 2 375 — — Construction and land development - noncommercial 1 92 — — — — — — Lease financing — — — — 2 131 — — Other — — — — 1 40 — — Total interest only 5 1,272 1 — 11 2,995 2 592 Loan term extension Construction and land development - commercial 1 204 1 204 2 189 — — Commercial mortgage 7 1,406 — — 11 4,072 — — Commercial and industrial 4 1,473 — — 4 2,040 — — Lease financing — — — — 2 144 — — Residential mortgage — — — — 15 532 — — Revolving mortgage 1 9 — — — — — — Construction and land development - noncommercial — — — — 3 175 — — Consumer 1 5 — — 5 122 — — Total loan term extension 14 3,097 1 204 42 7,274 — — Below market interest rate Construction and land development - commercial 14 626 — — 10 371 — — Commercial mortgage 31 7,880 1 1,757 29 11,399 3 1,276 Commercial and industrial 13 2,476 — — 11 772 — — Other commercial real estate 2 124 — — 1 347 — — Residential mortgage 90 4,946 7 213 29 1,402 2 95 Revolving mortgage 6 140 — — 5 270 — — Construction & land development - noncommercial 2 253 — — 11 590 — — Consumer 13 120 — — 5 162 — — Other 1 1,464 — — — — — — Total below market interest rate 172 18,029 8 1,970 101 15,313 5 1,371 Discharged from bankruptcy Construction and land development - commercial 2 21 — — — — — — Commercial mortgage 3 1,562 1 275 2 970 1 — Commercial and industrial 3 148 — — — — — — Residential mortgage 20 938 — — 9 691 2 288 Revolving mortgage 47 2,230 6 320 10 420 1 — Construction & land development - noncommercial — — — — 1 62 1 62 Consumer 16 187 2 39 4 18 — — Total discharged from bankruptcy 91 5,086 9 634 26 2,161 5 350 Total non-PCI restructurings 282 $ 27,484 19 $ 2,808 180 $ 27,743 12 $ 2,313 Three months ended September 30, 2015 Three months ended September 30, 2014 All restructurings Restructurings with payment default All restructurings Restructurings with payment default (Dollars in thousands) Number of loans Recorded investment at period end Number of loans Recorded investment at period end Number of loans Recorded investment at period end Number of loans Recorded investment at period end PCI loans Loan term extension Construction and land development - commercial — $ — — $ — 1 $ 348 — $ — Residential mortgage — — — — — — 3 381 Total loan term extension — — — — 1 348 3 381 Below market interest rate Commercial mortgage — — — — 6 3,377 1 67 Residential mortgage 3 223 1 47 3 227 — — Total below market interest rate 3 223 1 47 9 3,604 1 67 Discharged from bankruptcy Revolving mortgage 1 105 — — — — — — Total discharged from bankruptcy 1 105 — — — — — — Total PCI restructurings 4 $ 328 1 $ 47 10 $ 3,952 4 $ 448 Nine months ended September 30, 2015 Nine months ended September 30, 2014 All restructurings Restructurings with payment default All restructurings Restructurings with payment default (Dollars in thousands) Number of loans Recorded investment at period end Number of loans Recorded investment at period end Number of loans Recorded investment at period end Number of loans Recorded investment at period end PCI loans Interest only period provided Commercial mortgage — $ — — $ — 2 $ 44 2 $ 44 Total interest only — — — — 2 44 2 44 Loan term extension Construction and land development - commercial — — — — 2 348 — — Residential mortgage — — — — 1 322 4 381 Total loan term extension — — — — 3 670 4 381 Below market interest rate Construction and land development - commercial — — — — 2 308 — — Commercial mortgage — — — — 15 5,539 2 94 Residential mortgage 11 766 1 47 29 3,994 2 — Total below market interest rate 11 766 1 47 46 9,841 4 94 Discharged from bankruptcy Residential mortgage 1 78 — — 26 1,673 2 — Revolving mortgage 1 105 — — — — — — Total discharged from bankruptcy 2 183 — — 26 1,673 2 — Total PCI restructurings 13 $ 949 1 $ 47 77 $ 12,228 12 $ 519

Other Real Estate Owned (Tables

Other Real Estate Owned (Tables)	9 Months Ended
Other Real Estate Owned (Tables)	Sep. 30, 2015
Banking and Thrift [Abstract]
Changes in other real estate owned	The following table explains changes in other real estate owned during the nine months ended September 30, 2015 and September 30, 2014 . (Dollars in thousands) Covered Noncovered Total Balance at December 31, 2013 $ 47,081 $ 36,898 $ 83,979 Additions 25,235 16,901 42,136 Additions acquired in the 1st Financial merger — 11,591 11,591 Sales (27,756 ) (23,526 ) (51,282 ) Writedowns (9,751 ) (4,215 ) (13,966 ) Transfers (1) (5,537 ) 5,537 — Balance at September 30, 2014 $ 29,272 $ 43,186 $ 72,458 Balance at December 31, 2014 $ 22,982 $ 70,454 $ 93,436 Additions 6,202 38,022 44,224 Sales (17,539 ) (46,612 ) (64,151 ) Writedowns (1,387 ) (2,263 ) (3,650 ) Transfers (1) (2,106 ) 2,106 — Balance at September 30, 2015 $ 8,152 $ 61,707 $ 69,859 (1) Transfers include OREO balances associated with expired loss share agreements. At September 30, 2015 and December 31, 2014 , BancShares had $15.8 million and $29.0 million , respectively, of foreclosed residential real estate property in OREO. The recorded investment in consumer mortgage loans collateralized by residential real estate property in the process of foreclosure totaled $18.9 million and $24.8 million at September 30, 2015 and December 31, 2014 , respectively.

FDIC Loss Share Receivable (Tab

FDIC Loss Share Receivable (Tables)	9 Months Ended
FDIC Loss Share Receivable (Tables)	Sep. 30, 2015
FDIC Loss Share Receivable [Abstract]
Changes in Receivable From FDIC	The following table provides changes in the receivable from the FDIC for the three and nine months ended September 30, 2015 and September 30, 2014 . Three months ended September 30 Nine months ended September 30 (Dollars in thousands) 2015 2014 2015 2014 Beginning balance $ 5,808 $ 49,959 $ 28,701 $ 93,397 Amortization (2,343 ) (6,362 ) (8,835 ) (37,028 ) Net cash payments to FDIC 13,915 1,130 24,805 5,479 Post-acquisition adjustments (8,104 ) 413 (35,395 ) (16,708 ) Ending balance $ 9,276 $ 45,140 $ 9,276 $ 45,140

Mortgage Servicing Rights (Tabl

Mortgage Servicing Rights (Tables)	9 Months Ended
Mortgage Servicing Rights (Tables)	Sep. 30, 2015
Mortgage Servicing Rights [Abstract]
Mortgage servicing rights	Our portfolio of residential mortgage loans serviced for third parties was $2.10 billion and $1.95 billion as of September 30, 2015 and December 31, 2014 , respectively. These loans were originated by BancShares and sold to third parties on a non-recourse basis with servicing rights retained. These retained servicing rights are recorded as a servicing asset on the Consolidated Balance Sheets and are initially recorded at fair value. The activity of the servicing asset for the three and nine months ended September 30 , 2015 and 2014 is presented in the following table: Three months ended September 30 Nine months ended September 30 (Dollars in thousands) 2015 2014 2015 2014 Beginning balance $ 18,162 $ — $ 16,688 $ 16 Servicing rights originated 1,857 — 4,446 — Amortization (695 ) — (2,657 ) (164 ) Servicing rights acquired in the 1st Financial merger — — — 148 Valuation allowance reversal 3 — 850 — Ending balance $ 19,327 $ — $ 19,327 $ —
Mortgage servicing rights valuation allowance	The following table presents the activity in the servicing asset valuation allowance for the three and nine months ended September 30 , 2015 and 2014 : Three months ended September 30 Nine months ended September 30 (Dollars in thousands) 2015 2014 2015 2014 Beginning balance $ 3 $ — $ 850 $ — Valuation allowance reversal (3 ) — (850 ) — Ending balance $ — $ — $ — $ —
Mortgage servicing rights economic assumptions	Valuation of mortgage servicing rights is performed using a pooling methodology. Similar loans are pooled together and evaluated on a discounted earnings basis to determine the present value of future earnings. Key economic assumptions used to value mortgage servicing rights as of September 30, 2015 and December 31, 2014 were as follows: September 30, 2015 December 31, 2014 Discount rate - conventional fixed loans 7.05 % 7.20 % Discount rate - all loans excluding conventional fixed loans 9.05 % 9.20 % Weighted average constant prepayment rate 10.41 % 14.25 % Weighted average cost to service a loan $ 56.61 $ 56.02

Repurchase Agreements (Tables)

Repurchase Agreements (Tables)	9 Months Ended
Repurchase Agreements (Tables)	Sep. 30, 2015
Repurchase Agreements [Abstract]
Schedule of Repurchase Agreements	The remaining contractual maturity of the securities sold under agreements to repurchase by class of collateral pledged included in short-term borrowings in the Consolidated Balance Sheets as of September 30, 2015 and December 31, 2014 is presented in the following tables. September 30, 2015 Remaining Contractual Maturity of the Agreements (Dollars in thousands) Overnight and continuous Up to 30 Days 30-90 Days Greater than 90 Days Total Repurchase agreements U.S. Treasury $ 747,206 $ — $ — $ 23,092 $ 770,298 Government agency — — — 6,908 6,908 Total borrowings $ 747,206 $ — $ — $ 30,000 $ 777,206 Gross amount of recognized liabilities for repurchase agreements $ 777,206 December 31, 2014 Remaining Contractual Maturity of the Agreements Overnight and continuous Up to 30 Days 30-90 Days Greater than 90 Days Total Repurchase agreements U.S. Treasury $ 162,924 $ — $ — $ 23,086 $ 186,010 Government agency — — — 6,914 6,914 Mortgage-backed securities 131,501 — — — 131,501 Total borrowings $ 294,425 $ — $ — $ 30,000 $ 324,425 Gross amount of recognized liabilities for repurchase agreements $ 324,425

Estimated Fair Values (Tables)

Estimated Fair Values (Tables)	9 Months Ended
Estimated Fair Values (Tables)	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Estimated Fair Values For Certain Financial Assets And Financial Liabilities	For all other financial assets and financial liabilities, the carrying value is a reasonable estimate of the fair value as of September 30, 2015 and December 31, 2014 . The carrying value and fair value for these assets and liabilities are equivalent because they are relatively short term in nature and there is no interest rate or credit risk that would cause the fair value to differ from the carrying value. (Dollars in thousands) September 30, 2015 December 31, 2014 Carrying value Fair value Carrying value Fair value Cash and due from banks $ 546,444 $ 546,444 $ 604,182 $ 604,182 Overnight investments 2,368,132 2,368,132 1,724,919 1,724,919 Investment securities available for sale 6,690,578 6,690,578 7,171,917 7,171,917 Investment securities held to maturity 301 314 518 544 Loans held for sale 71,874 71,874 63,696 63,696 Net loans and leases 19,650,343 19,038,274 18,564,999 18,046,497 Receivable from the FDIC for loss share agreements (1) 9,276 9,276 28,701 18,218 Income earned not collected 67,368 67,368 57,254 57,254 Federal Home Loan Bank stock 37,511 37,511 39,113 39,113 Mortgage servicing rights 19,327 22,358 16,688 16,736 Deposits 26,719,375 26,050,802 25,678,577 25,164,683 Short-term borrowings 759,757 759,757 987,184 987,184 Long-term obligations 705,418 722,180 351,320 367,732 Payable to the FDIC for loss share agreements 124,038 131,711 116,535 122,168 Accrued interest payable 5,950 5,950 8,194 8,194 Interest rate swap 2,331 2,331 4,337 4,337 (1) At September 30, 2015 , the carrying value of the FDIC receivable approximates the fair value due to the short term nature of the majority of loss share agreements. At December 31, 2014 , the fair value of the FDIC receivable is estimated based on discounted future cash flows using current discount rates and excludes receivable related to accretable yield to be amortized in prospective periods.
Assets And Liabilities Carried At Fair Value On A Recurring Basis	For assets and liabilities carried at fair value on a recurring basis, the following table provides fair value information as of September 30, 2015 and December 31, 2014 . September 30, 2015 Fair value measurements using: (Dollars in thousands) Fair value Level 1 inputs Level 2 inputs Level 3 inputs Assets measured at fair value Investment securities available for sale U.S. Treasury $ 1,691,502 $ — $ 1,691,502 $ — Government agency 634,904 — 634,904 — Mortgage-backed securities 4,362,561 — 4,362,561 — Equity securities 1,611 1,611 — — Total investment securities available for sale $ 6,690,578 $ 1,611 $ 6,688,967 $ — Loans held for sale $ 71,874 $ — $ 71,874 $ — Liabilities measured at fair value Interest rate swaps accounted for as cash flow hedges $ 2,331 $ — $ 2,331 $ — December 31, 2014 Fair value measurements using: Fair value Level 1 inputs Level 2 inputs Level 3 inputs Assets measured at fair value Investment securities available for sale U.S. Treasury $ 2,629,670 $ — $ 2,629,670 $ — Government agency 908,817 — 908,817 — Mortgage-backed securities 3,633,304 — 3,633,304 — Municipal securities 126 — 126 — Total investment securities available for sale $ 7,171,917 $ — $ 7,171,917 $ — Loans held for sale $ 63,696 $ — $ 63,696 $ — Liabilities measured at fair value Interest rate swaps accounted for as cash flow hedges $ 4,337 $ — $ 4,337 $ —
Fair Value Option	The following table summarizes the difference between the aggregate fair value and the aggregate unpaid principal balance for residential real estate loans held for sale measured at fair value as of September 30, 2015 and December 31, 2014 . September 30, 2015 (Dollars in thousands) Fair Value Aggregate Unpaid Principal Balance Difference Loans held for sale $ 71,874 $ 69,858 $ 2,016 December 31, 2014 Fair Value Aggregate Unpaid Principal Balance Difference Loans held for sale $ 63,696 $ 62,996 $ 700 No loans held for sale were 90 or more days past due or on nonaccrual status as of September 30, 2015 or December 31, 2014 . The changes in fair value for residential real estate loans held for sale for which we elected the fair value option are included in the table below for the three and nine months ended September 30, 2015 . Three months ended September 30, 2015 Nine months ended September 30, 2015 (Dollars in thousands) Gains(Losses) From Fair Value Changes Gains(Losses) From Fair Value Changes Loans held for sale $ 1,347 $ 1,316
Assets And Liabilities Carried At Fair Value On A Nonrecurring Basis	For financial assets and liabilities carried at fair value on a nonrecurring basis, the following table provides fair value information as of September 30, 2015 and December 31, 2014 . September 30, 2015 Fair value measurements using: (Dollars in thousands) Fair value Level 1 inputs Level 2 inputs Level 3 inputs Impaired loans $ 61,621 $ — $ — $ 61,621 Other real estate not covered under loss share agreements remeasured during current year 39,996 — — 39,996 Other real estate covered under loss share agreements remeasured during current year 3,250 — — 3,250 December 31, 2014 Fair value measurements using: Fair value Level 1 inputs Level 2 inputs Level 3 inputs Impaired loans $ 73,170 $ — $ — $ 73,170 Other real estate not covered under loss share agreements remeasured during current year 40,714 — — 40,714 Other real estate covered under loss share agreements remeasured during current year 17,664 — — 17,664 Mortgage servicing rights 13,562 — — 13,562

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	9 Months Ended
Employee Benefit Plans (Tables)	Sep. 30, 2015
BancShares Plan
Defined Benefit Plan Disclosure [Line Items]
Schedule of Net Benefit Costs	BancShares Plan For the three and nine months ended September 30, 2015 and 2014 , the components of net periodic benefit cost are as follows: Three months ended September 30 Nine months ended September 30 (Dollars in thousands) 2015 2014 2015 2014 Service cost $ 3,358 $ 3,081 $ 10,561 $ 9,247 Interest cost 6,732 6,402 20,230 19,209 Expected return on assets (8,302 ) (7,296 ) (24,896 ) (23,448 ) Amortization of prior service cost 53 53 158 158 Amortization of net actuarial loss 2,863 769 8,531 3,861 Net periodic benefit cost $ 4,704 $ 3,009 $ 14,584 $ 9,027
Bancorporation Plan
Defined Benefit Plan Disclosure [Line Items]
Schedule of Net Benefit Costs	Bancorporation Plan For the three and nine months ended September 30, 2015 , the components of net periodic benefit cost are as follows: Three months ended September 30 Nine months ended September 30 (Dollars in thousands) 2015 2015 Service cost $ 641 $ 2,506 Interest cost 1,540 4,795 Expected return on assets (2,873 ) (8,612 ) Amortization of prior service cost — — Amortization of net actuarial loss — — Net periodic benefit cost $ (692 ) $ (1,311 )

Derivatives (Tables)

Derivatives (Tables)	9 Months Ended
Derivatives (Tables)	Sep. 30, 2015
Interest Rate Swap
Derivative [Line Items]
Schedule Of Interest Rate Swaps	September 30, 2015 December 31, 2014 (Dollars in thousands) Notional amount Estimated fair value of liability Notional amount Estimated fair value of liability 2011 interest rate swap hedging variable rate exposure on trust preferred securities 2011-2016 $ 93,500 $ 2,331 $ 93,500 $ 4,337

Accumulated Other Comprehensi36

Accumulated Other Comprehensive Income (Loss) (Tables)	9 Months Ended
Accumulated Other Comprehensive Income (Loss) (Tables)	Sep. 30, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule Of Accumulated Other Comprehensive Income (Loss)	Accumulated other comprehensive income (loss) included the following as of September 30, 2015 and December 31, 2014 : September 30, 2015 December 31, 2014 (Dollars in thousands) Accumulated other comprehensive income (loss) Deferred tax expense (benefit) Accumulated other comprehensive income (loss), net of tax Accumulated other comprehensive income (loss) Deferred tax expense (benefit) Accumulated other comprehensive income (loss), net of tax Unrealized gains on investment securities available for sale, net $ 26,926 $ 10,298 $ 16,628 $ 8,343 $ 3,245 $ 5,098 Unrealized loss on cash flow hedge (2,331 ) (877 ) (1,454 ) (4,337 ) (1,673 ) (2,664 ) Funded status of defined benefit plans (82,007 ) (31,957 ) (50,050 ) (90,696 ) (35,281 ) (55,415 ) Total $ (57,412 ) $ (22,536 ) $ (34,876 ) $ (86,690 ) $ (33,709 ) $ (52,981 ) The following table highlights changes in accumulated other comprehensive income (loss) by component for the three and nine months ended September 30, 2015 and September 30, 2014 : Three months ended September 30, 2015 (Dollars in thousands) Unrealized gains (losses) on available for sale securities 1 Gains (losses) on cash flow hedges 1 Defined benefit pension items 1 Total Beginning balance $ 2,604 $ (1,875 ) $ (51,888 ) $ (51,159 ) Other comprehensive income (loss) before reclassifications 17,494 421 — 17,915 Amounts reclassified from accumulated other comprehensive (loss) income (3,470 ) — 1,838 (1,632 ) Net current period other comprehensive income 14,024 421 1,838 16,283 Ending balance $ 16,628 $ (1,454 ) $ (50,050 ) $ (34,876 ) Three months ended September 30, 2014 Unrealized gains (losses) on available for sale securities 1 Gains (losses) on cash flow hedges 1 Defined benefit pension items 1 Total Beginning balance $ 16,490 $ (3,643 ) $ (8,790 ) $ 4,057 Other comprehensive (loss) income before reclassifications (7,000 ) 582 — (6,418 ) Amounts reclassified from accumulated other comprehensive income (loss) — — 503 503 Net current period other comprehensive (loss) income (7,000 ) 582 503 (5,915 ) Ending balance $ 9,490 $ (3,061 ) $ (8,287 ) $ (1,858 ) Nine months ended September 30, 2015 Unrealized gains (losses) on available for sale securities 1 Gains (losses) on cash flow hedges 1 Defined benefit pension items 1 Total Beginning balance $ 5,098 $ (2,664 ) $ (55,415 ) $ (52,981 ) Other comprehensive income before reclassifications 18,222 1,210 — 19,432 Amounts reclassified from accumulated other comprehensive (loss) income (6,692 ) — 5,365 (1,327 ) Net current period other comprehensive income 11,530 1,210 5,365 18,105 Ending balance $ 16,628 $ (1,454 ) $ (50,050 ) $ (34,876 ) Nine months ended September 30, 2014 Unrealized gains (losses) on available for sale securities 1 Gains (losses) on cash flow hedges 1 Defined benefit pension items 1 Total Beginning balance $ (10,091 ) $ (4,434 ) $ (10,743 ) $ (25,268 ) Other comprehensive income before reclassifications 19,581 1,373 — 20,954 Amounts reclassified from accumulated other comprehensive loss — — 2,456 2,456 Net current period other comprehensive income 19,581 1,373 2,456 23,410 Ending balance $ 9,490 $ (3,061 ) $ (8,287 ) $ (1,858 ) 1 All amounts are net of tax.
Reclassification out of Accumulated Other Comprehensive Income	(Dollars in thousands) Three months ended September 30, 2015 Details about accumulated other comprehensive income (loss) Amount reclassified from accumulated other comprehensive income (loss) 1 Affected line item in the statement where net income is presented Unrealized gains and losses on available for sale securities $ 5,564 Securities gains (2,094 ) Income taxes $ 3,470 Net income Amortization of defined benefit pension items Prior service costs $ (53 ) Employee benefits Actuarial losses (2,863 ) Employee benefits (2,916 ) Employee benefits 1,078 Income taxes $ (1,838 ) Net income Total reclassifications for the period $ 1,632 Three months ended September 30, 2014 Details about accumulated other comprehensive income (loss) Amount reclassified from accumulated other comprehensive income (loss) 1 Affected line item in the statement where net income is presented Amortization of defined benefit pension items Prior service costs $ (53 ) Employee benefits Actuarial losses (769 ) Employee benefits (822 ) Employee benefits 319 Income taxes $ (503 ) Net income Total reclassifications for the period $ (503 ) Nine months ended September 30, 2015 Details about accumulated other comprehensive income (loss) Amount reclassified from accumulated other comprehensive income (loss) 1 Affected line item in the statement where net income is presented Unrealized gains and losses on available for sale securities $ 10,837 Securities gains (4,145 ) Income taxes $ 6,692 Net income Amortization of defined benefit pension items Prior service costs $ (158 ) Employee benefits Actuarial losses (8,531 ) Employee benefits (8,689 ) Employee benefits 3,324 Income taxes $ (5,365 ) Net income Total reclassifications for the period $ 1,327 Nine months ended September 30, 2014 Details about accumulated other comprehensive icnome (loss) Amount reclassified from accumulated other comprehensive income (loss) 1 Affected line item in the statement where net income is presented Amortization of defined benefit pension items Prior service costs $ (158 ) Employee benefits Actuarial losses (3,861 ) Employee benefits (4,019 ) Employee benefits 1,563 Income taxes $ (2,456 ) Net income Total reclassifications for the period $ (2,456 ) 1 Amounts in parentheses indicate debits to profit/loss.

Accounting Policies and Basis37

Accounting Policies and Basis of Presentation Accounting Policies and Basis of Presentation (Recently Adopted Accounting Standards) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2012	Sep. 30, 2015	Dec. 31, 2014
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Qualified Affordable Housing Project Investments		$ 74,500	$ 57,100
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	$ 2,400

Business Combinations Busines38

Business Combinations Business Combinations (Details) - USD ($)	Feb. 14, 2015	Oct. 02, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Feb. 13, 2015	Oct. 01, 2014	Jan. 01, 2014
Business Acquisition [Line Items]
Goodwill Impairment Prior To Acquisition		$ 166,800,000
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value							$ 154,496,000		$ 316,327,000
Gain on acquisition			$ 0	$ 0	$ 42,930,000	$ 0
Merger-related expenses			3,679,000	$ 1,505,000	11,249,000	$ 7,352,000
Bancorporation
Business Acquisition [Line Items]
BancShares number of shares owned in Bancorporation		32,042
Fair value of Bancorporation shares owned by BancShares								$ 29,551,000
Cash and overnight investments								1,280,000,000
Investment securities available for sale								2,011,263,000
Loans								4,491,067,000
Intangible asset								109,416,000
Total assets acquired								8,275,367,000
Deposits								7,174,817,000
Total liabilities assumed								7,655,408,000
Cash paid to shareholders		$ 30,394,000
Goodwill acquired		$ 4,233,000
Pro forma revenue			341,927,000		995,704,000
Pro forma net income			(127,768,000)		(50,279,000)
Capitol City Bank and Trust
Business Acquisition [Line Items]
Cash and cash equivalents							19,622,000
Investment securities available for sale							35,413,000
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value							154,496,000
Intangible asset							690,000
Other assets							1,714,000
Total assets acquired							211,935,000
Deposits							266,352,000
Business Combination Bargain Purchase Gain Adjustment			5,400,000
Short-term borrowings							5,501,000
Other liabilities							667,000
Total liabilities assumed							272,520,000
Fair value of net assets (liabilities) assumed							(60,585,000)
Cash received from FDIC							$ 103,515,000
Gain on acquisition	$ 42,930,000
Bargain Purchase After Tax Gain	$ 26,400,000
Merger-related expenses			500,000		1,800,000
Revenue generated			$ 2,300,000		$ 6,000,000
Class A Common Stock \| Bancorporation
Business Acquisition [Line Items]
Right to receive number of shares conversion		2,586,762
Value of shares of BancShares common stock issued to Bancorporation								560,370,000
Class B Common Stock \| Bancorporation
Business Acquisition [Line Items]
Right to receive number of shares conversion		18,202
Value of shares of BancShares common stock issued to Bancorporation								$ 3,877,000
Shares and Cash \| Bancorporation
Business Acquisition [Line Items]
Right to receive cash per share		$ 50
Shares and Cash \| Class A Common Stock \| Bancorporation
Business Acquisition [Line Items]
Right to receive number of shares conversion		4
Shares Only \| Class A Common Stock \| Bancorporation
Business Acquisition [Line Items]
Right to receive number of shares conversion		3.58
Shares Only \| Class B Common Stock \| Bancorporation
Business Acquisition [Line Items]
Right to receive number of shares conversion		0.42

Business Combinations (Loans Ac

Business Combinations (Loans Acquired) (Details) - USD ($) $ in Thousands	Feb. 13, 2015	Jan. 01, 2014
Business Acquisition [Line Items]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	$ 154,496	$ 316,327

Investments (Aggregate Values a

Investments (Aggregate Values and Unrealized Gains and Losses) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Investment securities available for sale
Cost	$ 6,663,652	$ 7,163,574
Gross Unrealized Gains	33,845	20,589
Gross Unrealized Losses	6,919	12,246
Fair Value	6,690,578	7,171,917
Investment securities held to maturity
Cost	301	518
U. S. Treasury
Investment securities available for sale
Cost	1,685,794	2,626,900
Gross Unrealized Gains	5,708	2,922
Gross Unrealized Losses	0	152
Fair Value	1,691,502	2,629,670
Government Agency
Investment securities available for sale
Cost	633,162	908,362
Gross Unrealized Gains	1,742	702
Gross Unrealized Losses	0	247
Fair Value	634,904	908,817
Mortgage Backed Securities
Investment securities available for sale
Cost	4,343,105	3,628,187
Gross Unrealized Gains	26,375	16,964
Gross Unrealized Losses	6,919	11,847
Fair Value	4,362,561	3,633,304
Investment securities held to maturity
Cost	301	518
Held To Maturity Securities Accumulated Unrecognized Holding Gain	13	26
Held To Maturity Securities Accumulated Unrecognized Holding Loss	0	0
Fair Value	314	544
Equity Securities
Investment securities available for sale
Cost	1,591
Gross Unrealized Gains	20
Gross Unrealized Losses	0
Fair Value	$ 1,611
State, County and Municipal
Investment securities available for sale
Cost		125
Gross Unrealized Gains		1
Gross Unrealized Losses		0
Fair Value		$ 126

Investments (Maturity Informati

Investments (Maturity Information) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Investment securities available for sale
Total investment securities available for sale, cost	$ 6,663,652	$ 7,163,574
Total investment securities available for sale, fair value	6,690,578	7,171,917
Investment securities held to maturity
Investment securities held to maturity	301	518
Debt Securities
Investment securities available for sale
Maturing in one year or less, cost	673,879	447,866
Maturing in one through five years, cost	1,645,077	3,087,521
Maturing in one year or less, fair value	675,164	447,992
Maturing in one through five years, fair value	1,651,242	3,090,621
Equity Securities
Investment securities available for sale
Total investment securities available for sale, cost	1,591	0
Total investment securities available for sale, fair value	$ 1,611	$ 0

Investments (Unrealized Losses)

Investments (Unrealized Losses) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Investment securities available for sale:
Fair Value, Less than 12 months	$ 911,980	$ 1,173,274
Unrealized Losses, Less than 12 months	3,024	2,203
Fair Value, 12 months or more	300,157	832,420
Unrealized Losses, Greater than 12 months	3,895	10,043
Fair Value, Total	1,212,137	2,005,694
Unrealized Losses, Total	6,919	12,246
U. S. Treasury
Investment securities available for sale:
Fair Value, Less than 12 months		338,612
Unrealized Losses, Less than 12 months		151
Fair Value, 12 months or more		1,015
Unrealized Losses, Greater than 12 months		1
Fair Value, Total		339,627
Unrealized Losses, Total	0	152
Government Agency
Investment securities available for sale:
Fair Value, Less than 12 months		261,288
Unrealized Losses, Less than 12 months		247
Fair Value, 12 months or more		0
Unrealized Losses, Greater than 12 months		0
Fair Value, Total		261,288
Unrealized Losses, Total	0	247
Mortgage Backed Securities
Investment securities available for sale:
Fair Value, Less than 12 months	911,980	573,374
Unrealized Losses, Less than 12 months	3,024	1,805
Fair Value, 12 months or more	300,157	831,405
Unrealized Losses, Greater than 12 months	3,895	10,042
Fair Value, Total	1,212,137	1,404,779
Unrealized Losses, Total	$ 6,919	11,847
State, County and Municipal
Investment securities available for sale:
Unrealized Losses, Total		$ 0

Investments (Narrative) (Detail

Investments (Narrative) (Details)	3 Months Ended		9 Months Ended
Investments (Narrative) (Details)	Sep. 30, 2015USD ($)investments	Sep. 30, 2014USD ($)	Sep. 30, 2015USD ($)investments	Sep. 30, 2014USD ($)	Dec. 31, 2014USD ($)
Investments [Abstract]
Securities gains (losses)	$ 5,564,000	$ 0	$ 10,837,000	$ 0
Unrealized Losses Related to Marketability of Securities or Issuer's Ability to Honor Redemption Obligations	0		0		$ 0
Fair Value, 12 months or more in unrealized loss position	300,157,000		300,157,000		832,420,000
Unrealized Losses, Greater than 12 months	$ 3,895,000		$ 3,895,000		10,043,000
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year \| investments	40		40
Investment value deemed to be OTTI	$ 0		$ 0
Investment securities, aggregate carrying value, pledged as collateral	$ 4,750,000,000		$ 4,750,000,000		$ 4,370,000,000

Investments (Securities Gains (

Investments (Securities Gains (Losses)) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Investments [Abstract]
Gross gains on sales of investment securities available for sale	$ 5,564	$ 0	$ 10,850	$ 0
Gross losses on sales of investment securities available for sale	0	0	(13)	0
Total securities gains (losses)	$ 5,564	$ 0	$ 10,837	$ 0

Loans and Leases (Narrative) (D

Loans and Leases (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]
PCI loans	$ 1,044,064	$ 1,044,064	$ 1,186,498	$ 996,280	$ 1,029,426
Noncovered loans pledged to secure debt obligations	$ 3,690,000	3,690,000	3,160,000
Threshold period past due for write-off of Business credit card loans (days)	120 days
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged	$ 2,590,000	2,590,000	2,200,000
Advances from Federal Home Loan Banks	520,300	520,300	240,300
Federal Home Loan Bank Advances, Current Borrowing Capacity	2,070,000	2,070,000	1,960,000
Loans and Leases Receivable, Gross, Carrying Amount, Covered	296,500	296,500	485,300
Non-PCI Loans
Financing Receivable, Recorded Investment [Line Items]
Nonaccruing	87,276	87,276	44,005
Accretion Income	4,500	15,600
PCI Loans
Financing Receivable, Recorded Investment [Line Items]
Nonaccruing	5,329	5,329	33,422
PCI loans	1,044,064	1,044,064	1,186,498
Bancorporation
Financing Receivable, Recorded Investment [Line Items]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Purchase Discount Remaining	45,100	45,100	$ 61,200
Sun American Bank
Financing Receivable, Recorded Investment [Line Items]
PCI loans	29,900	29,900
Williamsburg First National Bank
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered	$ 7,000	$ 7,000

Loans and Leases (Loans and Lea

Loans and Leases (Loans and Leases Outstanding) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
Non-PCI loans	$ 18,811,742	$ 17,582,967
PCI loans	1,044,064	1,186,498	$ 996,280	$ 1,029,426
Total loans and leases	19,855,806	18,769,465
Commercial
Non-PCI loans	12,219,444	11,205,639
PCI loans	646,961	726,123
Commercial \| Construction and land development
Non-PCI loans	563,926	493,133
PCI loans	41,582	78,079
Commercial \| Mortgage
Non-PCI loans	8,076,946	7,552,948
PCI loans	568,256	577,518
Commercial \| Other commercial real estate
Non-PCI loans	316,924	244,875
PCI loans	18,013	40,193
Commercial \| Commercial and industrial
Non-PCI loans	2,211,973	1,988,934
PCI loans	17,023	27,254
Commercial \| Lease financing
Non-PCI loans	691,915	571,916
Commercial \| Other
Non-PCI loans	357,760	353,833
PCI loans	2,087	3,079
Noncommerical
Non-PCI loans	6,592,298	6,377,328
PCI loans	397,103	460,375
Noncommerical \| Construction and land development
Non-PCI loans	220,493	205,016
PCI loans	347	912
Noncommerical \| Mortgage
Non-PCI loans	2,659,821	2,493,058
PCI loans	334,518	382,340
Noncommerical \| Revolving mortgage
Non-PCI loans	2,519,972	2,561,800
PCI loans	59,695	74,109
Noncommerical \| Consumer
Non-PCI loans	1,192,012	1,117,454
PCI loans	$ 2,543	$ 3,014

Loans and Leases (Composition o

Loans and Leases (Composition of the Loans and Leases Outstanding By Credit Quality Indicator) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	$ 1,044,064	$ 1,186,498	$ 996,280	$ 1,029,426
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	12,219,444	11,205,639
PCI loans	646,961	726,123
Commercial \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	8,076,946	7,552,948
PCI loans	568,256	577,518
Commercial \| Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	316,924	244,875
PCI loans	18,013	40,193
Commercial \| Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	2,211,973	1,988,934
PCI loans	17,023	27,254
Commercial \| Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	691,915	571,916
Commercial \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	357,760	353,833
PCI loans	2,087	3,079
Commercial \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	563,926	493,133
PCI loans	41,582	78,079
Commercial \| Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	11,799,765	10,773,986
PCI loans	341,122	342,172
Commercial \| Pass \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	7,821,706	7,284,714
PCI loans	302,848	300,187
Commercial \| Pass \| Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	314,171	242,053
PCI loans	8,519	11,033
Commercial \| Pass \| Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	2,070,568	1,859,415
PCI loans	10,744	16,637
Commercial \| Pass \| Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	683,265	564,319
Commercial \| Pass \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	354,222	349,111
PCI loans	775	801
Commercial \| Pass \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	555,833	474,374
PCI loans	18,236	13,514
Commercial \| Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	137,482	176,355
PCI loans	98,667	125,195
Commercial \| Special Mention \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	107,790	129,247
PCI loans	94,955	98,724
Commercial \| Special Mention \| Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	285	909
PCI loans	0	16,271
Commercial \| Special Mention \| Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	16,812	27,683
PCI loans	1,462	4,137
Commercial \| Special Mention \| Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	5,161	3,205
Commercial \| Special Mention \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	1,828	1,384
PCI loans	0	0
Commercial \| Special Mention \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	5,606	13,927
PCI loans	2,250	6,063
Commercial \| Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	167,147	157,333
PCI loans	190,709	247,138
Commercial \| Substandard \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	143,536	134,677
PCI loans	159,148	171,920
Commercial \| Substandard \| Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	1,010	1,765
PCI loans	9,048	12,889
Commercial \| Substandard \| Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	15,241	8,878
PCI loans	4,395	6,312
Commercial \| Substandard \| Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	3,163	3,955
Commercial \| Substandard \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	1,710	3,338
PCI loans	1,312	2,278
Commercial \| Substandard \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	2,487	4,720
PCI loans	16,806	53,739
Commercial \| Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	2,517	2,895
PCI loans	15,549	9,241
Commercial \| Doubtful \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	647	2,366
PCI loans	10,967	6,302
Commercial \| Doubtful \| Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	0	0
PCI loans	0	0
Commercial \| Doubtful \| Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	1,544	164
PCI loans	292	130
Commercial \| Doubtful \| Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	326	365
Commercial \| Doubtful \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	0	0
PCI loans	0	0
Commercial \| Doubtful \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	0	0
PCI loans	4,290	2,809
Commercial \| Ungraded
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	112,533	95,070
PCI loans	914	2,377
Commercial \| Ungraded \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	3,267	1,944
PCI loans	338	385
Commercial \| Ungraded \| Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	1,458	148
PCI loans	446	0
Commercial \| Ungraded \| Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	107,808	92,794
PCI loans	130	38
Commercial \| Ungraded \| Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	0	72
Commercial \| Ungraded \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	0	0
PCI loans	0	0
Commercial \| Ungraded \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	0	112
PCI loans	0	1,954
Noncommerical
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	397,103	460,375
Noncommerical \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	334,518	382,340
Noncommerical \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	347	912
Noncommerical \| Revolving mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	59,695	74,109
Noncommerical \| Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	2,543	3,014
Non-PCI Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	18,811,742	17,582,967
Past due loans	126,620	101,467
Current loans	18,685,122	17,481,500
Non-PCI Loans \| Commercial \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	8,076,946	7,552,948
Past due loans	40,900	24,210
Current loans	8,036,046	7,528,738
Non-PCI Loans \| Commercial \| Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	316,924	244,875
Past due loans	852	378
Current loans	316,072	244,497
Non-PCI Loans \| Commercial \| Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	2,211,973	1,988,934
Past due loans	7,781	4,766
Current loans	2,204,192	1,984,168
Non-PCI Loans \| Commercial \| Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	691,915	571,916
Past due loans	877	1,641
Current loans	691,038	570,275
Non-PCI Loans \| Commercial \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	357,760	353,833
Past due loans	195	2,112
Current loans	357,565	351,721
Non-PCI Loans \| Commercial \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	563,926	493,133
Past due loans	1,867	1,133
Current loans	562,059	492,000
Non-PCI Loans \| Noncommerical
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	6,592,298	6,377,328
Current loans	6,518,150	6,310,101
Non-PCI Loans \| Noncommerical \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	2,659,821	2,493,058
Past due loans	43,867	38,261
Current loans	2,615,954	2,454,797
Non-PCI Loans \| Noncommerical \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	220,493	205,016
Past due loans	3,757	2,672
Current loans	216,736	202,344
Non-PCI Loans \| Noncommerical \| Revolving mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	2,519,972	2,561,800
Past due loans	16,222	18,993
Current loans	2,503,750	2,542,807
Non-PCI Loans \| Noncommerical \| Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-PCI loans	1,192,012	1,117,454
Past due loans	10,302	7,301
Current loans	1,181,710	1,110,153
PCI Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
PCI loans	1,044,064	1,186,498
PCI Loans \| Noncommerical
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current loans	343,665	398,225
PCI Loans \| Noncommerical \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current loans	286,402	326,589
PCI Loans \| Noncommerical \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current loans	347	506
PCI Loans \| Noncommerical \| Revolving mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current loans	54,594	68,548
PCI Loans \| Noncommerical \| Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current loans	2,322	2,582
90 Days or greater \| Non-PCI Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	41,880	24,598
90 Days or greater \| Non-PCI Loans \| Commercial \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	21,416	8,061
90 Days or greater \| Non-PCI Loans \| Commercial \| Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	159	102
90 Days or greater \| Non-PCI Loans \| Commercial \| Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	1,328	378
90 Days or greater \| Non-PCI Loans \| Commercial \| Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	310	2
90 Days or greater \| Non-PCI Loans \| Commercial \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	184	0
90 Days or greater \| Non-PCI Loans \| Commercial \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	282	330
90 Days or greater \| Non-PCI Loans \| Noncommerical
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	18,201	15,725
90 Days or greater \| Non-PCI Loans \| Noncommerical \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	12,048	8,955
90 Days or greater \| Non-PCI Loans \| Noncommerical \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	576	202
90 Days or greater \| Non-PCI Loans \| Noncommerical \| Revolving mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	4,255	5,463
90 Days or greater \| Non-PCI Loans \| Noncommerical \| Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	1,322	1,105
90 Days or greater \| PCI Loans \| Noncommerical
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	31,059	38,723
90 Days or greater \| PCI Loans \| Noncommerical \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	27,499	34,246
90 Days or greater \| PCI Loans \| Noncommerical \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	0	406
90 Days or greater \| PCI Loans \| Noncommerical \| Revolving mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	3,560	3,811
90 Days or greater \| PCI Loans \| Noncommerical \| Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	0	260
60 to 89 Days past due \| Non-PCI Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	18,987	19,548
60 to 89 Days past due \| Non-PCI Loans \| Commercial \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	4,897	4,782
60 to 89 Days past due \| Non-PCI Loans \| Commercial \| Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	290	70
60 to 89 Days past due \| Non-PCI Loans \| Commercial \| Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	961	1,545
60 to 89 Days past due \| Non-PCI Loans \| Commercial \| Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	169	8
60 to 89 Days past due \| Non-PCI Loans \| Commercial \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	0	1,966
60 to 89 Days past due \| Non-PCI Loans \| Commercial \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	266	283
60 to 89 Days past due \| Non-PCI Loans \| Noncommerical
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	12,404	10,894
60 to 89 Days past due \| Non-PCI Loans \| Noncommerical \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	7,640	6,018
60 to 89 Days past due \| Non-PCI Loans \| Noncommerical \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	642	824
60 to 89 Days past due \| Non-PCI Loans \| Noncommerical \| Revolving mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	2,031	2,433
60 to 89 Days past due \| Non-PCI Loans \| Noncommerical \| Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	2,091	1,619
60 to 89 Days past due \| PCI Loans \| Noncommerical
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	6,541	10,443
60 to 89 Days past due \| PCI Loans \| Noncommerical \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	6,103	10,073
60 to 89 Days past due \| PCI Loans \| Noncommerical \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	0	0
60 to 89 Days past due \| PCI Loans \| Noncommerical \| Revolving mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	307	345
60 to 89 Days past due \| PCI Loans \| Noncommerical \| Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	131	25
30 to 59 Days past due \| Non-PCI Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	65,753	57,321
30 to 59 Days past due \| Non-PCI Loans \| Commercial \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	14,587	11,367
30 to 59 Days past due \| Non-PCI Loans \| Commercial \| Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	403	206
30 to 59 Days past due \| Non-PCI Loans \| Commercial \| Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	5,492	2,843
30 to 59 Days past due \| Non-PCI Loans \| Commercial \| Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	398	1,631
30 to 59 Days past due \| Non-PCI Loans \| Commercial \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	11	146
30 to 59 Days past due \| Non-PCI Loans \| Commercial \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	1,319	520
30 to 59 Days past due \| Non-PCI Loans \| Noncommerical
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	43,543	40,608
30 to 59 Days past due \| Non-PCI Loans \| Noncommerical \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	24,179	23,288
30 to 59 Days past due \| Non-PCI Loans \| Noncommerical \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	2,539	1,646
30 to 59 Days past due \| Non-PCI Loans \| Noncommerical \| Revolving mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	9,936	11,097
30 to 59 Days past due \| Non-PCI Loans \| Noncommerical \| Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	6,889	4,577
30 to 59 Days past due \| PCI Loans \| Noncommerical
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	15,838	12,984
30 to 59 Days past due \| PCI Loans \| Noncommerical \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	14,514	11,432
30 to 59 Days past due \| PCI Loans \| Noncommerical \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	0	0
30 to 59 Days past due \| PCI Loans \| Noncommerical \| Revolving mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	1,234	1,405
30 to 59 Days past due \| PCI Loans \| Noncommerical \| Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans	$ 90	$ 147

Loans and Leases (Aging Of The

Loans and Leases (Aging Of The Outstanding Loans and Leases By Class) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
PCI loans	$ 1,044,064	$ 1,186,498	$ 996,280	$ 1,029,426
Commercial
Financing Receivable, Recorded Investment, Past Due [Line Items]
PCI loans	646,961	726,123
Non-PCI loans	12,219,444	11,205,639
Commercial \| Construction and land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
PCI loans	41,582	78,079
Non-PCI loans	563,926	493,133
Commercial \| Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
PCI loans	568,256	577,518
Non-PCI loans	8,076,946	7,552,948
Commercial \| Other commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
PCI loans	18,013	40,193
Non-PCI loans	316,924	244,875
Commercial \| Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
PCI loans	17,023	27,254
Non-PCI loans	2,211,973	1,988,934
Commercial \| Lease financing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Non-PCI loans	691,915	571,916
Commercial \| Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
PCI loans	2,087	3,079
Non-PCI loans	357,760	353,833
Noncommerical
Financing Receivable, Recorded Investment, Past Due [Line Items]
PCI loans	397,103	460,375
Noncommerical \| Construction and land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
PCI loans	347	912
Noncommerical \| Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
PCI loans	334,518	382,340
Noncommerical \| Revolving mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
PCI loans	59,695	74,109
Noncommerical \| Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
PCI loans	2,543	3,014
PCI Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
PCI loans	1,044,064	1,186,498
PCI Loans \| Noncommerical
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current loans	343,665	398,225
PCI Loans \| Noncommerical \| Construction and land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current loans	347	506
PCI Loans \| Noncommerical \| Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current loans	286,402	326,589
PCI Loans \| Noncommerical \| Revolving mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current loans	54,594	68,548
PCI Loans \| Noncommerical \| Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current loans	2,322	2,582
Non-PCI Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	126,620	101,467
Current loans	18,685,122	17,481,500
Non-PCI loans	18,811,742	17,582,967
Non-PCI Loans \| Commercial \| Construction and land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	1,867	1,133
Current loans	562,059	492,000
Non-PCI loans	563,926	493,133
Non-PCI Loans \| Commercial \| Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	40,900	24,210
Current loans	8,036,046	7,528,738
Non-PCI loans	8,076,946	7,552,948
Non-PCI Loans \| Commercial \| Other commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	852	378
Current loans	316,072	244,497
Non-PCI loans	316,924	244,875
Non-PCI Loans \| Commercial \| Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	7,781	4,766
Current loans	2,204,192	1,984,168
Non-PCI loans	2,211,973	1,988,934
Non-PCI Loans \| Commercial \| Lease financing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	877	1,641
Current loans	691,038	570,275
Non-PCI loans	691,915	571,916
Non-PCI Loans \| Commercial \| Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	195	2,112
Current loans	357,565	351,721
Non-PCI loans	357,760	353,833
Non-PCI Loans \| Noncommerical
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current loans	6,518,150	6,310,101
Non-PCI loans	6,592,298	6,377,328
Non-PCI Loans \| Noncommerical \| Construction and land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	3,757	2,672
Current loans	216,736	202,344
Non-PCI loans	220,493	205,016
Non-PCI Loans \| Noncommerical \| Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	43,867	38,261
Current loans	2,615,954	2,454,797
Non-PCI loans	2,659,821	2,493,058
Non-PCI Loans \| Noncommerical \| Revolving mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	16,222	18,993
Current loans	2,503,750	2,542,807
Non-PCI loans	2,519,972	2,561,800
Non-PCI Loans \| Noncommerical \| Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	10,302	7,301
Current loans	1,181,710	1,110,153
Non-PCI loans	1,192,012	1,117,454
90 Days or greater \| PCI Loans \| Noncommerical
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	31,059	38,723
90 Days or greater \| PCI Loans \| Noncommerical \| Construction and land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	0	406
90 Days or greater \| PCI Loans \| Noncommerical \| Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	27,499	34,246
90 Days or greater \| PCI Loans \| Noncommerical \| Revolving mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	3,560	3,811
90 Days or greater \| PCI Loans \| Noncommerical \| Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	0	260
90 Days or greater \| Non-PCI Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	41,880	24,598
90 Days or greater \| Non-PCI Loans \| Commercial \| Construction and land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	282	330
90 Days or greater \| Non-PCI Loans \| Commercial \| Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	21,416	8,061
90 Days or greater \| Non-PCI Loans \| Commercial \| Other commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	159	102
90 Days or greater \| Non-PCI Loans \| Commercial \| Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	1,328	378
90 Days or greater \| Non-PCI Loans \| Commercial \| Lease financing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	310	2
90 Days or greater \| Non-PCI Loans \| Commercial \| Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	184	0
90 Days or greater \| Non-PCI Loans \| Noncommerical
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	18,201	15,725
90 Days or greater \| Non-PCI Loans \| Noncommerical \| Construction and land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	576	202
90 Days or greater \| Non-PCI Loans \| Noncommerical \| Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	12,048	8,955
90 Days or greater \| Non-PCI Loans \| Noncommerical \| Revolving mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	4,255	5,463
90 Days or greater \| Non-PCI Loans \| Noncommerical \| Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	1,322	1,105
60 to 89 Days past due \| PCI Loans \| Noncommerical
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	6,541	10,443
60 to 89 Days past due \| PCI Loans \| Noncommerical \| Construction and land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	0	0
60 to 89 Days past due \| PCI Loans \| Noncommerical \| Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	6,103	10,073
60 to 89 Days past due \| PCI Loans \| Noncommerical \| Revolving mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	307	345
60 to 89 Days past due \| PCI Loans \| Noncommerical \| Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	131	25
60 to 89 Days past due \| Non-PCI Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	18,987	19,548
60 to 89 Days past due \| Non-PCI Loans \| Commercial \| Construction and land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	266	283
60 to 89 Days past due \| Non-PCI Loans \| Commercial \| Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	4,897	4,782
60 to 89 Days past due \| Non-PCI Loans \| Commercial \| Other commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	290	70
60 to 89 Days past due \| Non-PCI Loans \| Commercial \| Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	961	1,545
60 to 89 Days past due \| Non-PCI Loans \| Commercial \| Lease financing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	169	8
60 to 89 Days past due \| Non-PCI Loans \| Commercial \| Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	0	1,966
60 to 89 Days past due \| Non-PCI Loans \| Noncommerical
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	12,404	10,894
60 to 89 Days past due \| Non-PCI Loans \| Noncommerical \| Construction and land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	642	824
60 to 89 Days past due \| Non-PCI Loans \| Noncommerical \| Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	7,640	6,018
60 to 89 Days past due \| Non-PCI Loans \| Noncommerical \| Revolving mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	2,031	2,433
60 to 89 Days past due \| Non-PCI Loans \| Noncommerical \| Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	2,091	1,619
30 to 59 Days past due \| PCI Loans \| Noncommerical
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	15,838	12,984
30 to 59 Days past due \| PCI Loans \| Noncommerical \| Construction and land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	0	0
30 to 59 Days past due \| PCI Loans \| Noncommerical \| Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	14,514	11,432
30 to 59 Days past due \| PCI Loans \| Noncommerical \| Revolving mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	1,234	1,405
30 to 59 Days past due \| PCI Loans \| Noncommerical \| Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	90	147
30 to 59 Days past due \| Non-PCI Loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	65,753	57,321
30 to 59 Days past due \| Non-PCI Loans \| Commercial \| Construction and land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	1,319	520
30 to 59 Days past due \| Non-PCI Loans \| Commercial \| Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	14,587	11,367
30 to 59 Days past due \| Non-PCI Loans \| Commercial \| Other commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	403	206
30 to 59 Days past due \| Non-PCI Loans \| Commercial \| Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	5,492	2,843
30 to 59 Days past due \| Non-PCI Loans \| Commercial \| Lease financing
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	398	1,631
30 to 59 Days past due \| Non-PCI Loans \| Commercial \| Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	11	146
30 to 59 Days past due \| Non-PCI Loans \| Noncommerical
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	43,543	40,608
30 to 59 Days past due \| Non-PCI Loans \| Noncommerical \| Construction and land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	2,539	1,646
30 to 59 Days past due \| Non-PCI Loans \| Noncommerical \| Mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	24,179	23,288
30 to 59 Days past due \| Non-PCI Loans \| Noncommerical \| Revolving mortgage
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	9,936	11,097
30 to 59 Days past due \| Non-PCI Loans \| Noncommerical \| Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due loans	$ 6,889	$ 4,577

Loans and Leases (Recorded Inve

Loans and Leases (Recorded Investment, By Class, In Loans And Leases On Nonaccrual Status And Loans And Leases Greater Than 90 Days Past Due And Still Accruing) (Details) - Non-PCI Loans - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	$ 87,276	$ 44,005
Loans and leases greater than 90 days and accruing	6,277	11,250
Commercial \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	617	343
Loans and leases greater than 90 days and accruing	45	56
Commercial \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	41,607	24,720
Loans and leases greater than 90 days and accruing	3,353	1,003
Commercial \| Other commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	262	619
Loans and leases greater than 90 days and accruing	0	35
Commercial \| Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	6,633	1,741
Loans and leases greater than 90 days and accruing	502	239
Commercial \| Lease financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	374	374
Loans and leases greater than 90 days and accruing	0	2
Noncommerical \| Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	875	0
Loans and leases greater than 90 days and accruing	0	202
Noncommerical \| Mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	24,911	14,242
Loans and leases greater than 90 days and accruing	1,444	3,191
Noncommerical \| Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	133	1,966
Loans and leases greater than 90 days and accruing	51	0
Noncommerical \| Revolving mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	10,856	0
Loans and leases greater than 90 days and accruing	19	5,463
Noncommerical \| Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccruing	1,008	0
Loans and leases greater than 90 days and accruing	$ 863	$ 1,059

Loans and Leases (Changes In Ca

Loans and Leases (Changes In Carrying Value Of Acquired Impaired Loans) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Feb. 13, 2015	Dec. 31, 2014	Jan. 01, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, Unpaid Principal Balance	$ 1,788,136	$ 1,754,882
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	1,186,498	1,029,426
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value			$ 154,496		$ 316,327
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Accretion	91,642	89,775
Reductions for repayments, foreclosures and changes in carrying value, net of accretion	(388,572)	(439,248)
Ending balance	1,044,064	$ 996,280
Loans on the Cost Recovery Method
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans on cost recovery method	6,900			$ 33,400
Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	726,123
Ending balance	646,961
Noncommerical
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	460,375
Ending balance	397,103
Construction and land development \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	78,079
Ending balance	41,582
Construction and land development \| Noncommerical
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	912
Ending balance	347
Mortgage \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	577,518
Ending balance	568,256
Mortgage \| Noncommerical
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	382,340
Ending balance	334,518
Other commercial real estate \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	40,193
Ending balance	18,013
Commercial and industrial \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	27,254
Ending balance	17,023
Consumer \| Noncommerical
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	3,014
Ending balance	2,543
Capitol City Bank and Trust
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value			154,496
Capitol City Bank and Trust \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value			139,894
Capitol City Bank and Trust \| Noncommerical
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value			14,602
Capitol City Bank and Trust \| Construction and land development \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value			4,116
Capitol City Bank and Trust \| Mortgage \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value			129,732
Capitol City Bank and Trust \| Mortgage \| Noncommerical
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value			13,251
Capitol City Bank and Trust \| Other commercial real estate \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value			3,202
Capitol City Bank and Trust \| Commercial and industrial \| Commercial
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value			2,844
Capitol City Bank and Trust \| Consumer \| Noncommerical
Carrying Value of Acquired Impaired Loans [Roll Forward]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value			$ 1,351
PCI Loans
Carrying Value of Acquired Impaired Loans [Roll Forward]
Beginning balance	1,186,498
Ending balance	1,044,064
Nonaccruing	$ 5,329			$ 33,422

Loans and Leases (Changes In 51

Loans and Leases (Changes In Carrying Amount Of Accretable Yield) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Loans and Leases Receivable Disclosure [Abstract]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield	$ 341,939	$ 413,816	$ 418,160	$ 439,990
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Additions	53,192	84,295
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Accretion	(91,642)	(89,775)
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference	15,687	1,374
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Changes in Expected Cash Flows Not Affecting Nonaccretable Difference	$ (53,458)	$ (22,068)

Loans and Leases Loans and Leas

Loans and Leases Loans and Leases (Schedule of Contractually Required Payments Including Principal and Interest, Expected Cash Flows to be Collected and Fair Values) (Details) - USD ($) $ in Thousands	Feb. 13, 2015	Jan. 01, 2014
Investments, Debt and Equity Securities [Abstract]
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition	$ 247,812
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition	207,688
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value	$ 154,496	$ 316,327

Allowance for Loan and Lease 53

Allowance for Loan and Lease Losses (Summary of Activity In Allowance for Loan and Lease Losses) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Impaired Loans and Leases, Baseline for Meaurement						$ 500,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Net loans and leases					$ 19,650,343,000	18,564,999,000
Loan and Leases Acquired with Deteriorated Credit Quality [Abstract]
Loans and leases acquired with deteriorated credit quality					1,044,064,000	1,186,498,000	$ 996,280,000	$ 1,029,426,000
Allowance for loan and lease losses					205,463,000	204,466,000
Commercial
Loan and Leases Acquired with Deteriorated Credit Quality [Abstract]
Loans and leases acquired with deteriorated credit quality					646,961,000	726,123,000
Commercial \| Construction and land development
Loan and Leases Acquired with Deteriorated Credit Quality [Abstract]
Loans and leases acquired with deteriorated credit quality					41,582,000	78,079,000
Commercial \| Mortgage
Loan and Leases Acquired with Deteriorated Credit Quality [Abstract]
Loans and leases acquired with deteriorated credit quality					568,256,000	577,518,000
Commercial \| Other commercial real estate
Loan and Leases Acquired with Deteriorated Credit Quality [Abstract]
Loans and leases acquired with deteriorated credit quality					18,013,000	40,193,000
Commercial \| Commercial and industrial
Loan and Leases Acquired with Deteriorated Credit Quality [Abstract]
Loans and leases acquired with deteriorated credit quality					17,023,000	27,254,000
Commercial \| Other
Loan and Leases Acquired with Deteriorated Credit Quality [Abstract]
Loans and leases acquired with deteriorated credit quality					2,087,000	3,079,000
Noncommerical
Loan and Leases Acquired with Deteriorated Credit Quality [Abstract]
Loans and leases acquired with deteriorated credit quality					397,103,000	460,375,000
Noncommerical \| Construction and land development
Loan and Leases Acquired with Deteriorated Credit Quality [Abstract]
Loans and leases acquired with deteriorated credit quality					347,000	912,000
Noncommerical \| Mortgage
Loan and Leases Acquired with Deteriorated Credit Quality [Abstract]
Loans and leases acquired with deteriorated credit quality					334,518,000	382,340,000
Noncommerical \| Revolving mortgage
Loan and Leases Acquired with Deteriorated Credit Quality [Abstract]
Loans and leases acquired with deteriorated credit quality					59,695,000	74,109,000
Noncommerical \| Consumer
Loan and Leases Acquired with Deteriorated Credit Quality [Abstract]
Loans and leases acquired with deteriorated credit quality					2,543,000	3,014,000
Non-PCI Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Impaired Financing Receivable, Related Allowance					8,491,000	15,717,000
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 192,849,000	$ 176,915,000	$ 182,837,000	$ 179,874,000
Provision for Loan, Lease, and Other Losses	(2,662,000)	1,734,000	14,988,000	4,334,000
Charge-offs	(5,018,000)	(5,387,000)	(17,098,000)	(14,578,000)
Recoveries	2,737,000	1,843,000	7,179,000	5,475,000
Ending balance	187,906,000	175,105,000	187,906,000	175,105,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Loans and leases individually evaluated for impairment					142,962,000	119,593,000
Loans and leases collectively evaluated for impairment					18,668,780,000	17,463,374,000
Net loans and leases					18,811,742,000	17,582,967,000
ALLL for loans and leases individually evaluated for impairment					8,491,000	15,717,000
ALLL for loans and leases collectively evaluated for impairment					179,415,000	167,120,000
Total allowance for loan and lease losses	192,849,000	176,915,000	182,837,000	179,874,000	187,906,000	182,837,000	175,105,000	179,874,000
Non-PCI Loans \| Commercial \| Construction and land development
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	13,079,000	11,116,000	11,961,000	10,335,000
Provision for Loan, Lease, and Other Losses	1,189,000	1,469,000	2,380,000	2,219,000
Charge-offs	(336,000)	0	(575,000)	0
Recoveries	129,000	15,000	295,000	46,000
Ending balance	14,061,000	12,600,000	14,061,000	12,600,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Loans and leases individually evaluated for impairment					3,194,000	1,620,000
Loans and leases collectively evaluated for impairment					560,732,000	491,513,000
Net loans and leases					563,926,000	493,133,000
ALLL for loans and leases individually evaluated for impairment					417,000	92,000
ALLL for loans and leases collectively evaluated for impairment					13,644,000	11,869,000
Total allowance for loan and lease losses	13,079,000	11,116,000	11,961,000	10,335,000	14,061,000	11,961,000	12,600,000	10,335,000
Non-PCI Loans \| Commercial \| Mortgage
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	80,436,000	92,129,000	85,189,000	100,257,000
Provision for Loan, Lease, and Other Losses	(5,664,000)	(8,082,000)	(11,221,000)	(17,021,000)
Charge-offs	(411,000)	(277,000)	(691,000)	(718,000)
Recoveries	794,000	476,000	1,878,000	1,728,000
Ending balance	75,155,000	84,246,000	75,155,000	84,246,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Loans and leases individually evaluated for impairment					92,745,000	82,803,000
Loans and leases collectively evaluated for impairment					7,984,201,000	7,470,145,000
Net loans and leases					8,076,946,000	7,552,948,000
ALLL for loans and leases individually evaluated for impairment					4,007,000	8,610,000
ALLL for loans and leases collectively evaluated for impairment					71,148,000	76,579,000
Total allowance for loan and lease losses	80,436,000	92,129,000	85,189,000	100,257,000	75,155,000	85,189,000	84,246,000	100,257,000
Non-PCI Loans \| Commercial \| Other commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	804,000	806,000	732,000	1,009,000
Provision for Loan, Lease, and Other Losses	291,000	61,000	522,000	(167,000)
Charge-offs	0	0	(178,000)	0
Recoveries	15,000	8,000	34,000	33,000
Ending balance	1,110,000	875,000	1,110,000	875,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Loans and leases individually evaluated for impairment					436,000	584,000
Loans and leases collectively evaluated for impairment					316,488,000	244,291,000
Net loans and leases					316,924,000	244,875,000
ALLL for loans and leases individually evaluated for impairment					295,000	112,000
ALLL for loans and leases collectively evaluated for impairment					815,000	620,000
Total allowance for loan and lease losses	804,000	806,000	732,000	1,009,000	1,110,000	732,000	875,000	1,009,000
Non-PCI Loans \| Commercial \| Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	39,392,000	26,909,000	30,727,000	22,362,000
Provision for Loan, Lease, and Other Losses	(799,000)	4,361,000	11,294,000	9,369,000
Charge-offs	(784,000)	(1,414,000)	(4,815,000)	(2,440,000)
Recoveries	296,000	227,000	899,000	792,000
Ending balance	38,105,000	30,083,000	38,105,000	30,083,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Loans and leases individually evaluated for impairment					16,395,000	11,040,000
Loans and leases collectively evaluated for impairment					2,195,578,000	1,977,894,000
Net loans and leases					2,211,973,000	1,988,934,000
ALLL for loans and leases individually evaluated for impairment					1,154,000	1,743,000
ALLL for loans and leases collectively evaluated for impairment					36,951,000	28,984,000
Total allowance for loan and lease losses	39,392,000	26,909,000	30,727,000	22,362,000	38,105,000	30,727,000	30,083,000	22,362,000
Non-PCI Loans \| Commercial \| Lease financing
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	4,706,000	4,365,000	4,286,000	4,749,000
Provision for Loan, Lease, and Other Losses	424,000	(71,000)	843,000	(420,000)
Charge-offs	(7,000)	(28,000)	(28,000)	(100,000)
Recoveries	16,000	34,000	38,000	71,000
Ending balance	5,139,000	4,300,000	5,139,000	4,300,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Loans and leases individually evaluated for impairment					1,908,000	623,000
Loans and leases collectively evaluated for impairment					690,007,000	571,293,000
Net loans and leases					691,915,000	571,916,000
ALLL for loans and leases individually evaluated for impairment					291,000	150,000
ALLL for loans and leases collectively evaluated for impairment					4,848,000	4,136,000
Total allowance for loan and lease losses	4,706,000	4,365,000	4,286,000	4,749,000	5,139,000	4,286,000	4,300,000	4,749,000
Non-PCI Loans \| Commercial \| Other
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,188,000	612,000	3,184,000	190,000
Provision for Loan, Lease, and Other Losses	(58,000)	127,000	(2,100,000)	562,000
Charge-offs	0	0	0	(13,000)
Recoveries	45,000	0	91,000	0
Ending balance	1,175,000	739,000	1,175,000	739,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Loans and leases individually evaluated for impairment					1,464,000	2,000,000
Loans and leases collectively evaluated for impairment					356,296,000	351,833,000
Net loans and leases					357,760,000	353,833,000
ALLL for loans and leases individually evaluated for impairment					67,000	1,972,000
ALLL for loans and leases collectively evaluated for impairment					1,108,000	1,212,000
Total allowance for loan and lease losses	1,188,000	612,000	3,184,000	190,000	1,175,000	3,184,000	739,000	190,000
Non-PCI Loans \| Noncommerical \| Construction and land development
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	1,133,000	905,000	892,000	681,000
Provision for Loan, Lease, and Other Losses	114,000	21,000	306,000	274,000
Charge-offs	0	(45,000)	(22,000)	(138,000)
Recoveries	3,000	14,000	74,000	78,000
Ending balance	1,250,000	895,000	1,250,000	895,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Loans and leases individually evaluated for impairment					1,045,000	1,340,000
Loans and leases collectively evaluated for impairment					219,448,000	203,676,000
Net loans and leases					220,493,000	205,016,000
ALLL for loans and leases individually evaluated for impairment					78,000	71,000
ALLL for loans and leases collectively evaluated for impairment					1,172,000	821,000
Total allowance for loan and lease losses	1,133,000	905,000	892,000	681,000	1,250,000	892,000	895,000	681,000
Non-PCI Loans \| Noncommerical \| Mortgage
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	12,705,000	9,301,000	10,661,000	10,511,000
Provision for Loan, Lease, and Other Losses	520,000	15,000	2,495,000	(933,000)
Charge-offs	(394,000)	(231,000)	(768,000)	(649,000)
Recoveries	314,000	28,000	757,000	184,000
Ending balance	13,145,000	9,113,000	13,145,000	9,113,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Loans and leases individually evaluated for impairment					19,691,000	14,913,000
Loans and leases collectively evaluated for impairment					2,640,130,000	2,478,145,000
Net loans and leases					2,659,821,000	2,493,058,000
ALLL for loans and leases individually evaluated for impairment					1,158,000	1,360,000
ALLL for loans and leases collectively evaluated for impairment					11,987,000	9,301,000
Total allowance for loan and lease losses	12,705,000	9,301,000	10,661,000	10,511,000	13,145,000	10,661,000	9,113,000	10,511,000
Non-PCI Loans \| Noncommerical \| Revolving mortgage
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	17,290,000	16,797,000	18,650,000	16,239,000
Provision for Loan, Lease, and Other Losses	871,000	2,075,000	440,000	4,681,000
Charge-offs	(677,000)	(925,000)	(2,086,000)	(3,249,000)
Recoveries	363,000	174,000	843,000	450,000
Ending balance	17,847,000	18,121,000	17,847,000	18,121,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Loans and leases individually evaluated for impairment					4,986,000	3,675,000
Loans and leases collectively evaluated for impairment					2,514,986,000	2,558,125,000
Net loans and leases					2,519,972,000	2,561,800,000
ALLL for loans and leases individually evaluated for impairment					526,000	1,052,000
ALLL for loans and leases collectively evaluated for impairment					17,321,000	17,598,000
Total allowance for loan and lease losses	17,290,000	16,797,000	18,650,000	16,239,000	17,847,000	18,650,000	18,121,000	16,239,000
Non-PCI Loans \| Noncommerical \| Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	22,116,000	13,975,000	16,555,000	13,541,000
Provision for Loan, Lease, and Other Losses	450,000	1,758,000	10,029,000	5,770,000
Charge-offs	(2,409,000)	(2,467,000)	(7,935,000)	(7,271,000)
Recoveries	762,000	867,000	2,270,000	2,093,000
Ending balance	20,919,000	14,133,000	20,919,000	14,133,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Loans and leases individually evaluated for impairment					1,098,000	995,000
Loans and leases collectively evaluated for impairment					1,190,914,000	1,116,459,000
Net loans and leases					1,192,012,000	1,117,454,000
ALLL for loans and leases individually evaluated for impairment					498,000	555,000
ALLL for loans and leases collectively evaluated for impairment					20,421,000	16,000,000
Total allowance for loan and lease losses	22,116,000	13,975,000	16,555,000	13,541,000	20,919,000	16,555,000	14,133,000	13,541,000
PCI Loans
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	15,468,000	29,331,000	21,629,000	53,520,000
Provision for Loan, Lease, and Other Losses	2,769,000	(197,000)	(1,370,000)	(11,999,000)
Charge-offs	(680,000)	(3,334,000)	(2,702,000)	(15,721,000)
Recoveries	0	0	0	0
Ending balance	17,557,000	25,800,000	17,557,000	25,800,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Total allowance for loan and lease losses	15,468,000	29,331,000	21,629,000	53,520,000	17,557,000	21,629,000	25,800,000	53,520,000
Loan and Leases Acquired with Deteriorated Credit Quality [Abstract]
Loans and leases acquired with deteriorated credit quality					1,044,064,000	1,186,498,000
PCI Loans \| Commercial \| Construction and land development
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	569,000	3,803,000	150,000	1,320,000
Provision for Loan, Lease, and Other Losses	632,000	(1,815,000)	1,148,000	1,463,000
Charge-offs	0	(1,633,000)	(97,000)	(2,428,000)
Recoveries	0	0	0	0
Ending balance	1,201,000	355,000	1,201,000	355,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Total allowance for loan and lease losses	569,000	3,803,000	150,000	1,320,000	1,201,000	150,000	355,000	1,320,000
PCI Loans \| Commercial \| Mortgage
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	6,428,000	17,315,000	10,135,000	29,906,000
Provision for Loan, Lease, and Other Losses	2,187,000	(2,374,000)	(803,000)	(6,946,000)
Charge-offs	(48,000)	(2,357,000)	(765,000)	(10,376,000)
Recoveries	0	0	0	0
Ending balance	8,567,000	12,584,000	8,567,000	12,584,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Total allowance for loan and lease losses	6,428,000	17,315,000	10,135,000	29,906,000	8,567,000	10,135,000	12,584,000	29,906,000
PCI Loans \| Commercial \| Other commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	69,000	407,000	75,000	1,354,000
Provision for Loan, Lease, and Other Losses	$ 235,000	(435,000)	229,000	(1,382,000)
Charge-offs		106,000	0	106,000
Recoveries	$ 0	0	0	0
Ending balance	304,000	78,000	304,000	78,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Total allowance for loan and lease losses	69,000	407,000	75,000	1,354,000	304,000	75,000	78,000	1,354,000
PCI Loans \| Commercial \| Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	323,000	375,000	1,240,000	5,275,000
Provision for Loan, Lease, and Other Losses	118,000	182,000	(514,000)	(1,883,000)
Charge-offs	(39,000)	839,000	(324,000)	(1,996,000)
Recoveries	0	0	0	0
Ending balance	402,000	1,396,000	402,000	1,396,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Total allowance for loan and lease losses	323,000	375,000	1,240,000	5,275,000	402,000	1,240,000	1,396,000	5,275,000
PCI Loans \| Noncommerical \| Construction and land development
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	0	0	183,000	682,000
Provision for Loan, Lease, and Other Losses	0	239,000	(183,000)	(443,000)
Charge-offs	0	(83,000)	0	(83,000)
Recoveries	0	0	0	0
Ending balance	0	156,000	0	156,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Total allowance for loan and lease losses	0	0	183,000	682,000	0	183,000	156,000	682,000
PCI Loans \| Noncommerical \| Mortgage
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,842,000	7,093,000	5,820,000	11,802,000
Provision for Loan, Lease, and Other Losses	(281,000)	187,000	21,000	(4,289,000)
Charge-offs	(15,000)	(188,000)	(295,000)	(421,000)
Recoveries	0	0	0	0
Ending balance	5,546,000	7,092,000	5,546,000	7,092,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Total allowance for loan and lease losses	5,842,000	7,093,000	5,820,000	11,802,000	5,546,000	5,820,000	7,092,000	11,802,000
PCI Loans \| Noncommerical \| Revolving mortgage
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	2,051,000	81,000	3,999,000	2,959,000
Provision for Loan, Lease, and Other Losses	(151,000)	3,899,000	(1,918,000)	1,502,000
Charge-offs	(577,000)	(1,000)	(758,000)	(482,000)
Recoveries	0	0	0	0
Ending balance	1,323,000	3,979,000	1,323,000	3,979,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Total allowance for loan and lease losses	2,051,000	81,000	3,999,000	2,959,000	1,323,000	3,999,000	3,979,000	2,959,000
PCI Loans \| Noncommerical \| Consumer and Other
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	186,000	257,000	27,000	222,000
Provision for Loan, Lease, and Other Losses	29,000	(80,000)	650,000	(21,000)
Charge-offs	(1,000)	(17,000)	(463,000)	(41,000)
Recoveries	0	0	0	0
Ending balance	214,000	160,000	214,000	160,000
Allowance for Loans and Leases Evaluated for Impairment [Abstract]
Total allowance for loan and lease losses	$ 186,000	$ 257,000	$ 27,000	$ 222,000	214,000	27,000	$ 160,000	$ 222,000
Loan and Leases Acquired with Deteriorated Credit Quality [Abstract]
Loans and leases acquired with deteriorated credit quality					$ 4,630,000	$ 6,093,000

Allowance for Loan and Lease 54

Allowance for Loan and Lease Losses (Allocation of Allowance for Loan and Lease Losses) (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]
Unpaid principal balance	$ 1,788,136	$ 1,754,882	$ 1,788,136	$ 1,754,882
Allowance for loan and lease losses	205,463		205,463		$ 204,466
Loans and Leases Receivable, Net Amount	19,650,343		19,650,343		18,564,999
PCI Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Acquired loans which have adverse change in expected cash flows	514,800		514,800		285,600
Provision for Loan, Lease, and Other Losses	2,769	(197)	(1,370)	(11,999)
Provision Expense And Accretion Income Reclassification	3,900
Financing Receivable, Allowance for Credit Losses, Write-downs	680	3,334	2,702	15,721
Recoveries	0	0	0	0
PCI Loans \| Commercial \| Construction and land development
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for Loan, Lease, and Other Losses	632	(1,815)	1,148	1,463
Financing Receivable, Allowance for Credit Losses, Write-downs	0	1,633	97	2,428
Recoveries	0	0	0	0
PCI Loans \| Commercial \| Mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for Loan, Lease, and Other Losses	2,187	(2,374)	(803)	(6,946)
Financing Receivable, Allowance for Credit Losses, Write-downs	48	2,357	765	10,376
Recoveries	0	0	0	0
PCI Loans \| Commercial \| Other commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for Loan, Lease, and Other Losses	$ 235	(435)	229	(1,382)
Financing Receivable, Allowance for Credit Losses, Write-downs		(106)	0	(106)
Recoveries	$ 0	0	0	0
PCI Loans \| Commercial \| Commercial and industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for Loan, Lease, and Other Losses	118	182	(514)	(1,883)
Financing Receivable, Allowance for Credit Losses, Write-downs	39	(839)	324	1,996
Recoveries	0	0	0	0
PCI Loans \| Noncommerical \| Construction and land development
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for Loan, Lease, and Other Losses	0	239	(183)	(443)
Financing Receivable, Allowance for Credit Losses, Write-downs	0	83	0	83
Recoveries	0	0	0	0
PCI Loans \| Noncommerical \| Consumer and Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for Loan, Lease, and Other Losses	29	(80)	650	(21)
Financing Receivable, Allowance for Credit Losses, Write-downs	1	17	463	41
Recoveries	0	0	0	0
PCI Loans \| Noncommerical \| Mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for Loan, Lease, and Other Losses	(281)	187	21	(4,289)
Financing Receivable, Allowance for Credit Losses, Write-downs	15	188	295	421
Recoveries	0	0	0	0
PCI Loans \| Noncommerical \| Revolving mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Provision for Loan, Lease, and Other Losses	(151)	3,899	(1,918)	1,502
Financing Receivable, Allowance for Credit Losses, Write-downs	577	1	758	482
Recoveries	0	0	0	0
Non-PCI Loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Total impaired noncovered loans and leases	142,962		142,962		119,593
Unpaid principal balance	159,307		159,307		133,466
Impaired Financing Receivable, Related Allowance	8,491		8,491		15,717
ALLL for loans and leases individually evaluated for impairment	8,491		8,491		15,717
Impaired Financing Receivable, with Related Allowance, Recorded Investment	67,619		67,619		87,007
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	75,343		75,343		32,586
Financing Receivable, Individually Evaluated for Impairment	142,962		142,962		119,593
Average balance	151,108	128,431	132,864	128,357
Interest income recognized	1,218	1,139	3,528	3,782
Provision for Loan, Lease, and Other Losses	(2,662)	1,734	14,988	4,334
Financing Receivable, Allowance for Credit Losses, Write-downs	5,018	5,387	17,098	14,578
Recoveries	2,737	1,843	7,179	5,475
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	179,415		179,415		167,120
Financing Receivable, Collectively Evaluated for Impairment	18,668,780		18,668,780		17,463,374
Loans and Leases Receivable, Net Amount	18,811,742		18,811,742		17,582,967
Non-PCI Loans \| Commercial \| Construction and land development
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	4,594		4,594		6,945
ALLL for loans and leases individually evaluated for impairment	417		417		92
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,799		1,799		996
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,395		1,395		624
Financing Receivable, Individually Evaluated for Impairment	3,194		3,194		1,620
Average balance	3,257	2,296	3,148	1,701
Interest income recognized	37	26	107	57
Provision for Loan, Lease, and Other Losses	1,189	1,469	2,380	2,219
Financing Receivable, Allowance for Credit Losses, Write-downs	336	0	575	0
Recoveries	129	15	295	46
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	13,644		13,644		11,869
Financing Receivable, Collectively Evaluated for Impairment	560,732		560,732		491,513
Loans and Leases Receivable, Net Amount	563,926		563,926		493,133
Non-PCI Loans \| Commercial \| Mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	100,914		100,914		87,702
ALLL for loans and leases individually evaluated for impairment	4,007		4,007		8,610
Impaired Financing Receivable, with Related Allowance, Recorded Investment	42,562		42,562		57,324
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	50,183		50,183		25,479
Financing Receivable, Individually Evaluated for Impairment	92,745		92,745		82,803
Average balance	99,613	90,318	88,614	86,131
Interest income recognized	803	806	2,405	2,522
Provision for Loan, Lease, and Other Losses	(5,664)	(8,082)	(11,221)	(17,021)
Financing Receivable, Allowance for Credit Losses, Write-downs	411	277	691	718
Recoveries	794	476	1,878	1,728
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	71,148		71,148		76,579
Financing Receivable, Collectively Evaluated for Impairment	7,984,201		7,984,201		7,470,145
Loans and Leases Receivable, Net Amount	8,076,946		8,076,946		7,552,948
Non-PCI Loans \| Commercial \| Other commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	868		868		913
ALLL for loans and leases individually evaluated for impairment	295		295		112
Impaired Financing Receivable, with Related Allowance, Recorded Investment	312		312		112
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	124		124		472
Financing Receivable, Individually Evaluated for Impairment	436		436		584
Average balance	539	1,980	498	2,474
Interest income recognized	6	7	7	67
Provision for Loan, Lease, and Other Losses	291	61	522	(167)
Financing Receivable, Allowance for Credit Losses, Write-downs	0	0	178	0
Recoveries	15	8	34	33
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	815		815		620
Financing Receivable, Collectively Evaluated for Impairment	316,488		316,488		244,291
Loans and Leases Receivable, Net Amount	316,924		316,924		244,875
Non-PCI Loans \| Commercial \| Commercial and industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	19,608		19,608		12,197
ALLL for loans and leases individually evaluated for impairment	1,154		1,154		1,743
Impaired Financing Receivable, with Related Allowance, Recorded Investment	5,352		5,352		10,319
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	11,043		11,043		721
Financing Receivable, Individually Evaluated for Impairment	16,395		16,395		11,040
Average balance	17,005	11,699	13,815	14,227
Interest income recognized	130	108	379	461
Provision for Loan, Lease, and Other Losses	(799)	4,361	11,294	9,369
Financing Receivable, Allowance for Credit Losses, Write-downs	784	1,414	4,815	2,440
Recoveries	296	227	899	792
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	36,951		36,951		28,984
Financing Receivable, Collectively Evaluated for Impairment	2,195,578		2,195,578		1,977,894
Loans and Leases Receivable, Net Amount	2,211,973		2,211,973		1,988,934
Non-PCI Loans \| Commercial \| Lease financing
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	1,908		1,908		623
ALLL for loans and leases individually evaluated for impairment	291		291		150
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,610		1,610		319
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	298		298		304
Financing Receivable, Individually Evaluated for Impairment	1,908		1,908		623
Average balance	1,939	312	1,664	589
Interest income recognized	21	5	55	26
Provision for Loan, Lease, and Other Losses	424	(71)	843	(420)
Financing Receivable, Allowance for Credit Losses, Write-downs	7	28	28	100
Recoveries	16	34	38	71
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	4,848		4,848		4,136
Financing Receivable, Collectively Evaluated for Impairment	690,007		690,007		571,293
Loans and Leases Receivable, Net Amount	691,915		691,915		571,916
Non-PCI Loans \| Commercial \| Other
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	1,540		1,540		2,000
ALLL for loans and leases individually evaluated for impairment	67		67		1,972
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,464		1,464		2,000
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0		0		0
Financing Receivable, Individually Evaluated for Impairment	1,464		1,464		2,000
Average balance	1,543	42	1,789	29
Interest income recognized	20	1	20	2
Provision for Loan, Lease, and Other Losses	(58)	127	(2,100)	562
Financing Receivable, Allowance for Credit Losses, Write-downs	0	0	0	13
Recoveries	45	0	91	0
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,108		1,108		1,212
Financing Receivable, Collectively Evaluated for Impairment	356,296		356,296		351,833
Loans and Leases Receivable, Net Amount	357,760		357,760		353,833
Non-PCI Loans \| Noncommerical \| Construction and land development
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	1,045		1,045		1,340
ALLL for loans and leases individually evaluated for impairment	78		78		71
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,045		1,045		1,077
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0		0		263
Financing Receivable, Individually Evaluated for Impairment	1,045		1,045		1,340
Average balance	1,027	1,942	821	1,902
Interest income recognized	12	27	28	77
Provision for Loan, Lease, and Other Losses	114	21	306	274
Financing Receivable, Allowance for Credit Losses, Write-downs	0	45	22	138
Recoveries	3	14	74	78
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	1,172		1,172		821
Financing Receivable, Collectively Evaluated for Impairment	219,448		219,448		203,676
Loans and Leases Receivable, Net Amount	220,493		220,493		205,016
Non-PCI Loans \| Noncommerical \| Mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	21,559		21,559		15,746
ALLL for loans and leases individually evaluated for impairment	1,158		1,158		1,360
Impaired Financing Receivable, with Related Allowance, Recorded Investment	9,746		9,746		10,198
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	9,945		9,945		4,715
Financing Receivable, Individually Evaluated for Impairment	19,691		19,691		14,913
Average balance	19,945	15,071	17,376	15,525
Interest income recognized	141	111	401	395
Provision for Loan, Lease, and Other Losses	520	15	2,495	(933)
Financing Receivable, Allowance for Credit Losses, Write-downs	394	231	768	649
Recoveries	314	28	757	184
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	11,987		11,987		9,301
Financing Receivable, Collectively Evaluated for Impairment	2,640,130		2,640,130		2,478,145
Loans and Leases Receivable, Net Amount	2,659,821		2,659,821		2,493,058
Non-PCI Loans \| Noncommerical \| Revolving mortgage
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	6,137		6,137		4,933
ALLL for loans and leases individually evaluated for impairment	526		526		1,052
Impaired Financing Receivable, with Related Allowance, Recorded Investment	2,852		2,852		3,675
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	2,134		2,134		0
Financing Receivable, Individually Evaluated for Impairment	4,986		4,986		3,675
Average balance	5,064	3,708	4,022	4,069
Interest income recognized	29	29	68	105
Provision for Loan, Lease, and Other Losses	871	2,075	440	4,681
Financing Receivable, Allowance for Credit Losses, Write-downs	677	925	2,086	3,249
Recoveries	363	174	843	450
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	17,321		17,321		17,598
Financing Receivable, Collectively Evaluated for Impairment	2,514,986		2,514,986		2,558,125
Loans and Leases Receivable, Net Amount	2,519,972		2,519,972		2,561,800
Non-PCI Loans \| Noncommerical \| Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Unpaid principal balance	1,134		1,134		1,067
ALLL for loans and leases individually evaluated for impairment	498		498		555
Impaired Financing Receivable, with Related Allowance, Recorded Investment	877		877		987
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	221		221		8
Financing Receivable, Individually Evaluated for Impairment	1,098		1,098		995
Average balance	1,176	1,063	1,117	1,710
Interest income recognized	19	19	58	70
Provision for Loan, Lease, and Other Losses	450	1,758	10,029	5,770
Financing Receivable, Allowance for Credit Losses, Write-downs	2,409	2,467	7,935	7,271
Recoveries	762	$ 867	2,270	$ 2,093
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment	20,421		20,421		16,000
Financing Receivable, Collectively Evaluated for Impairment	1,190,914		1,190,914		1,116,459
Loans and Leases Receivable, Net Amount	$ 1,192,012		$ 1,192,012		$ 1,117,454

Allowance for Loan and Lease 55

Allowance for Loan and Lease Losses (Troubled Debt Restructuring) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015USD ($)loans	Sep. 30, 2014USD ($)loans	Sep. 30, 2015USD ($)loans	Sep. 30, 2014USD ($)loans	Dec. 31, 2014USD ($)
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 145,719		$ 145,719		$ 151,479
Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	77	40	282	180
Financing Receivable, Modifications, Recorded Investment	$ 112,632		$ 112,632		104,607
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 8,906	$ 5,344	$ 27,484	$ 27,743
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	10	5	19	12
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 2,391	$ 283	$ 2,808	$ 2,313
PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	4	10	13	77
Financing Receivable, Modifications, Recorded Investment	$ 33,087		$ 33,087		46,872
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 328	$ 3,952	$ 949	$ 12,228
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	1	4	1	12
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 47	$ 448	$ 47	$ 519
Commercial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	106,125		106,125		118,166
Commercial \| Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	4,109		4,109		3,037
Commercial \| Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	84,769		84,769		101,121
Commercial \| Other commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,984		1,984		2,823
Commercial \| Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	13,855		13,855		10,528
Commercial \| Lease financing
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,408		1,408		623
Commercial \| Other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0		34
Noncommerical
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	39,594		39,594		33,313
Noncommerical \| Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,045		1,045		1,391
Noncommerical \| Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	31,103		31,103		27,252
Noncommerical \| Revolving mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	4,905		4,905		3,675
Noncommerical \| Consumer and Other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	2,541		2,541		995
Accruing
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	119,262		119,262		135,963
Accruing \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	86,892		86,892		91,316
Accruing \| PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	32,370		32,370		44,647
Accruing \| Commercial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	88,068		88,068		107,305
Accruing \| Commercial \| Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	3,479		3,479		2,591
Accruing \| Commercial \| Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	71,885		71,885		92,184
Accruing \| Commercial \| Other commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,889		1,889		2,374
Accruing \| Commercial \| Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	9,733		9,733		9,864
Accruing \| Commercial \| Lease financing
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,082		1,082		258
Accruing \| Commercial \| Other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0		34
Accruing \| Noncommerical
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	31,194		31,194		28,658
Accruing \| Noncommerical \| Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,045		1,045		1,391
Accruing \| Noncommerical \| Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	24,103		24,103		22,597
Accruing \| Noncommerical \| Revolving mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	3,592		3,592		3,675
Accruing \| Noncommerical \| Consumer and Other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	2,454		2,454		995
Nonaccruing
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	26,457		26,457		15,516
Nonaccruing \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	25,740		25,740		13,291
Nonaccruing \| PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	717		717		2,225
Nonaccruing \| Commercial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	18,057		18,057		10,861
Nonaccruing \| Commercial \| Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	630		630		446
Nonaccruing \| Commercial \| Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	12,884		12,884		8,937
Nonaccruing \| Commercial \| Other commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	95		95		449
Nonaccruing \| Commercial \| Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	4,122		4,122		664
Nonaccruing \| Commercial \| Lease financing
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	326		326		365
Nonaccruing \| Commercial \| Other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0		0
Nonaccruing \| Noncommerical
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	8,400		8,400		4,655
Nonaccruing \| Noncommerical \| Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0		0		0
Nonaccruing \| Noncommerical \| Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	7,000		7,000		4,655
Nonaccruing \| Noncommerical \| Revolving mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,313		1,313		0
Nonaccruing \| Noncommerical \| Consumer and Other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 87		$ 87		$ 0
Interest only period provided \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	1	0	5	11
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 92	$ 0	$ 1,272	$ 2,995
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	1	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 592
Interest only period provided \| PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 0	$ 44
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 44
Interest only period provided \| Commercial \| Mortgage \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			2	6
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 68	$ 2,449
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 592
Interest only period provided \| Commercial \| Mortgage \| PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 0	$ 44
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 44
Interest only period provided \| Commercial \| Commercial and industrial \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			2	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 1,112	$ 375
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			1	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
Interest only period provided \| Commercial \| Lease financing \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 0	$ 131
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
Interest only period provided \| Commercial \| Other \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			0	1
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 0	$ 40
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
Interest only period provided \| Noncommerical \| Construction and land development \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	1	0	1	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 92	$ 0	$ 92	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Loan term extension \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	4	8	14	42
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,520	$ 764	$ 3,097	$ 7,274
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	1	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 204	$ 0
Loan term extension \| PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	0	1	0	3
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 348	$ 0	$ 670
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	3	0	4
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 381	$ 0	$ 381
Loan term extension \| Commercial \| Construction and land development \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			1	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 204	$ 189
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			1	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 204	$ 0
Loan term extension \| Commercial \| Construction and land development \| PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	0	1	0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 348	$ 0	$ 348
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Loan term extension \| Commercial \| Mortgage \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	1	1	7	11
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 75	$ 462	$ 1,406	$ 4,072
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Loan term extension \| Commercial \| Commercial and industrial \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	3	0	4	4
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,445	$ 0	$ 1,473	$ 2,040
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Loan term extension \| Commercial \| Lease financing \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 0	$ 144
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
Loan term extension \| Noncommerical \| Construction and land development \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	0	2	0	3
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 141	$ 0	$ 175
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Loan term extension \| Noncommerical \| Consumer \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	0	2	1	5
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 81	$ 5	$ 122
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Loan term extension \| Noncommerical \| Mortgage \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	0	3	0	15
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 80	$ 0	$ 532
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Loan term extension \| Noncommerical \| Mortgage \| PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	0	0	0	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 0	$ 0	$ 322
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	3	0	4
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 381	$ 0	$ 381
Loan term extension \| Noncommerical \| Revolving mortgage \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			1	0
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 9	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
Below market interest rate \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	45	28	172	101
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 5,008	$ 4,468	$ 18,029	$ 15,313
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	5	2	8	5
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 1,915	$ 221	$ 1,970	$ 1,371
Below market interest rate \| PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	3	9	11	46
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 223	$ 3,604	$ 766	$ 9,841
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	1	1	1	4
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 47	$ 67	$ 47	$ 94
Below market interest rate \| Commercial \| Construction and land development \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	4	0	14	10
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 193	$ 0	$ 626	$ 371
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Below market interest rate \| Commercial \| Construction and land development \| PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 0	$ 308
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
Below market interest rate \| Commercial \| Mortgage \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	8	6	31	29
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,248	$ 3,062	$ 7,880	$ 11,399
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	1	1	3
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 176	$ 1,757	$ 1,276
Below market interest rate \| Commercial \| Mortgage \| PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	0	6	0	15
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 3,377	$ 0	$ 5,539
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	1	0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 67	$ 0	$ 94
Below market interest rate \| Commercial \| Other commercial real estate \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	2	0	2	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 124	$ 0	$ 124	$ 347
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Below market interest rate \| Commercial \| Commercial and industrial \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	3	3	13	11
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,797	$ 462	$ 2,476	$ 772
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	1	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 1,757	$ 0	$ 0	$ 0
Below market interest rate \| Commercial \| Other \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			1	0
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 1,464	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
Below market interest rate \| Noncommerical \| Construction and land development \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	0	3	2	11
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 173	$ 253	$ 590
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Below market interest rate \| Noncommerical \| Consumer \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	2	5	13	5
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 17	$ 162	$ 120	$ 162
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Below market interest rate \| Noncommerical \| Mortgage \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	25	11	90	29
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,592	$ 609	$ 4,946	$ 1,402
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	4	1	7	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 158	$ 45	$ 213	$ 95
Below market interest rate \| Noncommerical \| Mortgage \| PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	3	3	11	29
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 223	$ 227	$ 766	$ 3,994
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	1	0	1	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 47	$ 0	$ 47	$ 0
Below market interest rate \| Noncommerical \| Revolving mortgage \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	1	0	6	5
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 37	$ 0	$ 140	$ 270
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Discharged from bankruptcy \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	27	4	91	26
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 2,286	$ 112	$ 5,086	$ 2,161
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	5	3	9	5
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 476	$ 62	$ 634	$ 350
Discharged from bankruptcy \| PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	1	0	2	26
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 105	$ 0	$ 183	$ 1,673
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Discharged from bankruptcy \| Commercial \| Construction and land development \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	2		2	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 21	$ 0	$ 21	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Discharged from bankruptcy \| Commercial \| Mortgage \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	2	1	3	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 965	$ 0	$ 1,562	$ 970
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	1	1	1	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 275	$ 0	$ 275	$ 0
Discharged from bankruptcy \| Commercial \| Commercial and industrial \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	2	0	3	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 148	$ 0	$ 148	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Discharged from bankruptcy \| Noncommerical \| Construction and land development \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	0	0	0	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 0	$ 0	$ 62
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	1	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 62	$ 0	$ 62
Discharged from bankruptcy \| Noncommerical \| Consumer \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	6	1	16	4
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 91	$ 13	$ 187	$ 18
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	2	0	2	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 39	$ 0	$ 39	$ 0
Discharged from bankruptcy \| Noncommerical \| Mortgage \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	6	0	20	9
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 395	$ 0	$ 938	$ 691
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 288
Discharged from bankruptcy \| Noncommerical \| Mortgage \| PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			1	26
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 78	$ 1,673
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
Discharged from bankruptcy \| Noncommerical \| Revolving mortgage \| Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	9	2	47	10
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 666	$ 99	$ 2,230	$ 420
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	2	1	6	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 162	$ 0	$ 320	$ 0
Discharged from bankruptcy \| Noncommerical \| Revolving mortgage \| PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	1	0	1	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 105	$ 0	$ 105	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0

Allowance for Loan and Lease 56

Allowance for Loan and Lease Losses (Note Restructurings During Period) (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015USD ($)loans	Sep. 30, 2014USD ($)loans	Sep. 30, 2015USD ($)loans	Sep. 30, 2014USD ($)loans
PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	4	10	13	77
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 328	$ 3,952	$ 949	$ 12,228
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	1	4	1	12
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 47	$ 448	$ 47	$ 519
PCI Loans \| Loan term extension
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	0	1	0	3
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 348	$ 0	$ 670
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	3	0	4
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 381	$ 0	$ 381
PCI Loans \| Loan term extension \| Commercial \| Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	0	1	0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 348	$ 0	$ 348
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
PCI Loans \| Loan term extension \| Noncommerical \| Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	0	0	0	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 0	$ 0	$ 322
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	3	0	4
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 381	$ 0	$ 381
PCI Loans \| Interest only period provided
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 0	$ 44
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 44
PCI Loans \| Interest only period provided \| Commercial \| Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 0	$ 44
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 44
PCI Loans \| Below market interest rate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	3	9	11	46
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 223	$ 3,604	$ 766	$ 9,841
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	1	1	1	4
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 47	$ 67	$ 47	$ 94
PCI Loans \| Below market interest rate \| Commercial \| Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 0	$ 308
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
PCI Loans \| Below market interest rate \| Commercial \| Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	0	6	0	15
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 3,377	$ 0	$ 5,539
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	1	0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 67	$ 0	$ 94
PCI Loans \| Below market interest rate \| Noncommerical \| Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	3	3	11	29
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 223	$ 227	$ 766	$ 3,994
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	1	0	1	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 47	$ 0	$ 47	$ 0
PCI Loans \| Discharged from bankruptcy
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	1	0	2	26
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 105	$ 0	$ 183	$ 1,673
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
PCI Loans \| Discharged from bankruptcy \| Noncommerical \| Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			1	26
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 78	$ 1,673
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
PCI Loans \| Discharged from bankruptcy \| Noncommerical \| Revolving mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	1	0	1	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 105	$ 0	$ 105	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	77	40	282	180
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 8,906	$ 5,344	$ 27,484	$ 27,743
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	10	5	19	12
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 2,391	$ 283	$ 2,808	$ 2,313
Non-PCI Loans \| Loan term extension
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	4	8	14	42
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,520	$ 764	$ 3,097	$ 7,274
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	1	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 204	$ 0
Non-PCI Loans \| Loan term extension \| Commercial \| Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			1	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 204	$ 189
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			1	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 204	$ 0
Non-PCI Loans \| Loan term extension \| Commercial \| Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	1	1	7	11
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 75	$ 462	$ 1,406	$ 4,072
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans \| Loan term extension \| Commercial \| Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	3	0	4	4
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,445	$ 0	$ 1,473	$ 2,040
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans \| Loan term extension \| Commercial \| Lease financing
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 0	$ 144
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
Non-PCI Loans \| Loan term extension \| Noncommerical \| Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	0	2	0	3
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 141	$ 0	$ 175
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans \| Loan term extension \| Noncommerical \| Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	0	3	0	15
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 80	$ 0	$ 532
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans \| Loan term extension \| Noncommerical \| Revolving mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			1	0
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 9	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
Non-PCI Loans \| Loan term extension \| Noncommerical \| Consumer
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	0	2	1	5
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 81	$ 5	$ 122
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans \| Interest only period provided
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	1	0	5	11
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 92	$ 0	$ 1,272	$ 2,995
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	1	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 592
Non-PCI Loans \| Interest only period provided \| Commercial \| Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			2	6
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 68	$ 2,449
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 592
Non-PCI Loans \| Interest only period provided \| Commercial \| Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			2	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 1,112	$ 375
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			1	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
Non-PCI Loans \| Interest only period provided \| Commercial \| Lease financing
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			0	2
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 0	$ 131
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
Non-PCI Loans \| Interest only period provided \| Commercial \| Other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			0	1
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 0	$ 40
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
Non-PCI Loans \| Interest only period provided \| Noncommerical \| Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	1	0	1	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 92	$ 0	$ 92	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans \| Below market interest rate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	45	28	172	101
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 5,008	$ 4,468	$ 18,029	$ 15,313
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	5	2	8	5
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 1,915	$ 221	$ 1,970	$ 1,371
Non-PCI Loans \| Below market interest rate \| Commercial \| Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	4	0	14	10
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 193	$ 0	$ 626	$ 371
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans \| Below market interest rate \| Commercial \| Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	8	6	31	29
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,248	$ 3,062	$ 7,880	$ 11,399
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	1	1	3
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 176	$ 1,757	$ 1,276
Non-PCI Loans \| Below market interest rate \| Commercial \| Other commercial real estate
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	2	0	2	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 124	$ 0	$ 124	$ 347
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans \| Below market interest rate \| Commercial \| Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	3	3	13	11
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,797	$ 462	$ 2,476	$ 772
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	1	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 1,757	$ 0	$ 0	$ 0
Non-PCI Loans \| Below market interest rate \| Commercial \| Other
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans			1	0
Financing Receivable, Modifications, Post-Modification Recorded Investment			$ 1,464	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans			0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment			$ 0	$ 0
Non-PCI Loans \| Below market interest rate \| Noncommerical \| Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	0	3	2	11
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 173	$ 253	$ 590
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans \| Below market interest rate \| Noncommerical \| Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	25	11	90	29
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 1,592	$ 609	$ 4,946	$ 1,402
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	4	1	7	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 158	$ 45	$ 213	$ 95
Non-PCI Loans \| Below market interest rate \| Noncommerical \| Revolving mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	1	0	6	5
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 37	$ 0	$ 140	$ 270
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans \| Below market interest rate \| Noncommerical \| Consumer
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	2	5	13	5
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 17	$ 162	$ 120	$ 162
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans \| Discharged from bankruptcy
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	27	4	91	26
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 2,286	$ 112	$ 5,086	$ 2,161
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	5	3	9	5
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 476	$ 62	$ 634	$ 350
Non-PCI Loans \| Discharged from bankruptcy \| Commercial \| Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	2		2	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 21	$ 0	$ 21	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans \| Discharged from bankruptcy \| Commercial \| Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	2	1	3	2
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 965	$ 0	$ 1,562	$ 970
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	1	1	1	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 275	$ 0	$ 275	$ 0
Non-PCI Loans \| Discharged from bankruptcy \| Commercial \| Commercial and industrial
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	2	0	3	0
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 148	$ 0	$ 148	$ 0
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 0
Non-PCI Loans \| Discharged from bankruptcy \| Noncommerical \| Construction and land development
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	0	0	0	1
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 0	$ 0	$ 0	$ 62
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	1	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 62	$ 0	$ 62
Non-PCI Loans \| Discharged from bankruptcy \| Noncommerical \| Mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	6	0	20	9
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 395	$ 0	$ 938	$ 691
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	0	0	0	2
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 0	$ 0	$ 288
Non-PCI Loans \| Discharged from bankruptcy \| Noncommerical \| Revolving mortgage
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	9	2	47	10
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 666	$ 99	$ 2,230	$ 420
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	2	1	6	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 162	$ 0	$ 320	$ 0
Non-PCI Loans \| Discharged from bankruptcy \| Noncommerical \| Consumer
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts \| loans	6	1	16	4
Financing Receivable, Modifications, Post-Modification Recorded Investment	$ 91	$ 13	$ 187	$ 18
Financing Receivable, Modifications, Subsequent Default, Number of Contracts \| loans	2	0	2	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 39	$ 0	$ 39	$ 0

Other Real Estate Owned (Detail

Other Real Estate Owned (Details) - USD ($) $ in Thousands	9 Months Ended
Other Real Estate Owned (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Real Estate Properties [Line Items]
Mortgage Loans in Process of Foreclosure, Amount	$ 18,900		$ 24,800
Covered
Beginning balance	22,982	$ 47,081
Additions	6,202	25,235
Sales	(17,539)	(27,756)
Writedowns	(1,387)	(9,751)
Other Real Estate Covered Transfers	(2,106)	(5,537)
Ending balance	8,152	29,272
Noncovered
Beginning balance	70,454	36,898
Additions	38,022	16,901
Sales	(46,612)	(23,526)
Writedowns	(2,263)	(4,215)
Other Real Estate Non Covered Transfers	2,106	5,537
Ending balance	61,707	43,186
Total
Beginning balance	93,436	83,979
Additions	44,224	42,136
Sales	(64,151)	(51,282)
Writedowns	(3,650)	(13,966)
Other Real Estate Transfers	0	0
Ending balance	69,859	72,458
Mortgage
Total
Beginning balance	29,048
Ending balance	$ 15,768
1st Financial
Covered
Additions		0
Noncovered
Additions		11,591
Total
Additions		$ 11,591

FDIC Loss Share Receivable (Cha

FDIC Loss Share Receivable (Changes in Receivable from FDIC) (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
FDIC Loss Share Receivable [Abstract]
FDIC Indemnification Asset	$ 9,276	$ 45,140	$ 9,276	$ 45,140	$ 5,808	$ 28,701	$ 49,959	$ 93,397
Receivable From FDIC For Loss Share Agreements [Roll Forward]
Accretion of discounts and premiums, net	(2,343)	(6,362)	(8,835)	(37,028)
Receipt of payments from FDIC	13,915	1,130	24,805	5,479
Post-acquisition and other adjustments, net	$ (8,104)	$ 413	$ (35,395)	$ (16,708)

Mortgage Servicing Rights (MSR

Mortgage Servicing Rights (MSR Carrying Value) ((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
Servicing Asset at Amortized Cost [Line Items]
Mortgage servicing rights	$ 19,327	$ 0	$ 19,327	$ 0	$ 18,162	$ 16,688	$ 0	$ 16
Amortization of Mortgage Servicing Rights (MSRs)	(695)	0	(2,657)	(164)
Servicing Asset at Amortized Cost, Additions	1,857	0	4,446	0
Valuation allowance provision	3	0	850	0
1st Financial
Servicing Asset at Amortized Cost [Line Items]
Servicing Asset at Amortized Cost, Additions	$ 0	$ 0	$ 0	$ 148

Mortgage Servicing Rights (Valu

Mortgage Servicing Rights (Valuation allowance) (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
Valuation Allowance for Impairment of Recognized Servicing Assets [Line Items]
Valuation allowance	$ 0	$ 0	$ 0	$ 0	$ 3	$ 850	$ 0	$ 0
Valuation allowance provision	$ (3)	$ 0	$ (850)	$ 0

Mortgage Servicing Rights (Econ

Mortgage Servicing Rights (Economic Assumptions) (Details) - $ / loans	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Servicing Asset Key Economic Assumptions [Line Items]
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed	10.41%	14.25%
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Cost to Service Loans	56.61	56.02
Conventional fixed loans
Servicing Asset Key Economic Assumptions [Line Items]
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate	7.05%	7.20%
All loans excluding conventional fixed loans
Servicing Asset Key Economic Assumptions [Line Items]
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate	9.05%	9.20%

Mortgage Servicing Rights (Narr

Mortgage Servicing Rights (Narrative) (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
Mortgage Servicing Rights [Abstract]
Residential Mortgage Loans Serviced	$ 2,100,000		$ 2,100,000			$ 1,950,000
Mortgage servicing rights	19,327	$ 0	19,327	$ 0	$ 18,162	$ 16,688	$ 0	$ 16
Contractually Specified Servicing Fees, Late Fees, and Ancillary Fees Earned in Exchange for Servicing Financial Assets	2,800		8,900
Amortization of Mortgage Servicing Rights (MSRs)	695	0	2,657	164
Valuation allowance provision	$ (3)	$ 0	$ (850)	$ 0

Repurchase Agreements (Details)

Repurchase Agreements (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase, Fair Value of Collateral	$ 825,600	$ 418,300
Securities Sold under Agreements to Repurchase	777,206	324,425
Securities Sold under Agreements to Repurchase, Gross	777,206	324,425
Government Agency
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	6,908	6,914
U. S. Treasury
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	770,298	186,010
Mortgage Backed Securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase		131,501
Overnight and continuous
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	747,206	294,425
Overnight and continuous \| Government Agency
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
Overnight and continuous \| U. S. Treasury
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	747,206	162,924
Overnight and continuous \| Mortgage Backed Securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase		131,501
Up to 30 days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
Up to 30 days \| Government Agency
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
Up to 30 days \| U. S. Treasury
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
Up to 30 days \| Mortgage Backed Securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase		0
30 - 90 days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
30 - 90 days \| Government Agency
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
30 - 90 days \| U. S. Treasury
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	0	0
30 - 90 days \| Mortgage Backed Securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase		0
Greater than 90 days
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	30,000	30,000
Greater than 90 days \| Government Agency
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	6,908	6,914
Greater than 90 days \| U. S. Treasury
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase	$ 23,092	23,086
Greater than 90 days \| Mortgage Backed Securities
Assets Sold under Agreements to Repurchase [Line Items]
Securities Sold under Agreements to Repurchase		$ 0

Estimated Fair Values (Estimate

Estimated Fair Values (Estimated Fair Values For Certain Financial Assets And Financial Liabilities) (Details) - USD ($) $ in Thousands		Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks		$ 546,444		$ 604,182
Overnight investments		2,368,132		1,724,919
Investment securities available for sale		6,690,578		7,171,917
Investment securities held to maturity		301		518
Loans held for sale		71,874		63,696
Loans and Leases Receivable, Net Amount		19,650,343		18,564,999
FDIC Indemnification Asset		9,276	$ 5,808	28,701	$ 45,140	$ 49,959	$ 93,397
Income earned not collected		67,368		57,254
Mortgage servicing rights		19,327	$ 18,162	16,688	$ 0	$ 0	$ 16
Deposits		26,719,375		25,678,577
FDIC loss share payable		124,038		116,535
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks		546,444		604,182
Overnight investments		2,368,132		1,724,919
Investment securities available for sale		6,690,578		7,171,917
Investment securities held to maturity		301		518
Loans held for sale		71,874		63,696
Loans and Leases Receivable, Net Amount		19,650,343		18,564,999
FDIC Indemnification Asset	[1]	9,276		28,701
Income earned not collected		67,368		57,254
Stock issued by Federal Home Loan Bank		37,511		39,113
Mortgage servicing rights		19,327		16,688
Deposits		26,719,375		25,678,577
Short-term borrowings		759,757		987,184
Long-term obligations		705,418		351,320
FDIC loss share payable		124,038		116,535
Accrued interest payable		5,950		8,194
Interest rate swap		2,331		4,337
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks		546,444		604,182
Overnight investments		2,368,132		1,724,919
Investment securities available for sale		6,690,578		7,171,917
Investment securities held to maturity		314		544
Loans held for sale		71,874		63,696
Loans and Leases Receivable, Net Amount		19,038,274		18,046,497
FDIC Indemnification Asset	[1]	9,276		18,218
Income earned not collected		67,368		57,254
Stock issued by Federal Home Loan Bank		37,511		39,113
Mortgage servicing rights		22,358		16,736
Deposits		26,050,802		25,164,683
Short-term borrowings		759,757		987,184
Long-term obligations		722,180		367,732
FDIC loss share payable		131,711		122,168
Accrued interest payable		5,950		8,194
Interest rate swap		$ 2,331		$ 4,337

[1]	(1) At September 30, 2015, the carrying value of the FDIC receivable approximates the fair value due to the short term nature of the majority of loss share agreements. At December 31, 2014, the fair value of the FDIC receivable is estimated based on discounted future cash flows using current discount rates and excludes receivable related to accretable yield to be amortized in prospective periods.

Estimated Fair Values (Narrativ

Estimated Fair Values (Narrative) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total investment securities available for sale, fair value	$ 6,690,578	$ 7,171,917
Liability transfers between Level 1 and Level 2	0
Asset transfers between Level 1 and Level 2	0
Liability transfers between Level 2 and Level 1	0
Asset transfers between Level 2 and Level 1	0
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability measured at fair value on nonrecurring basis	$ 0	$ 0
Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discounts for collateral value estimates due to estimated holding and selling costs (percent)	10.00%	10.00%
Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Discounts for collateral value estimates due to estimated holding and selling costs (percent)	14.00%	14.00%

Estimated Fair Values (Assets A

Estimated Fair Values (Assets And Liabilities Carried At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	$ 6,690,578	$ 7,171,917
Fair Value, Measurements, Recurring \| Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	6,690,578	7,171,917
Loans held for sale	71,874	63,696
Interest rate swaps accounted for as cash flow hedges	2,331	4,337
Fair Value, Measurements, Recurring \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	1,611	0
Loans held for sale	0	0
Interest rate swaps accounted for as cash flow hedges	0	0
Fair Value, Measurements, Recurring \| Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	6,688,967	7,171,917
Loans held for sale	71,874	63,696
Interest rate swaps accounted for as cash flow hedges	2,331	4,337
Fair Value, Measurements, Recurring \| Significant Unobservable Inputs (Level 3 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Loans held for sale	0	0
Interest rate swaps accounted for as cash flow hedges	0	0
Fair Value, Measurements, Recurring \| U.S. Treasury \| Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	1,691,502	2,629,670
Fair Value, Measurements, Recurring \| U.S. Treasury \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring \| U.S. Treasury \| Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	1,691,502	2,629,670
Fair Value, Measurements, Recurring \| U.S. Treasury \| Significant Unobservable Inputs (Level 3 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring \| Government Agency \| Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	634,904	908,817
Fair Value, Measurements, Recurring \| Government Agency \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring \| Government Agency \| Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	634,904	908,817
Fair Value, Measurements, Recurring \| Government Agency \| Significant Unobservable Inputs (Level 3 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring \| Mortgage Backed Securities \| Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	4,362,561	3,633,304
Fair Value, Measurements, Recurring \| Mortgage Backed Securities \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring \| Mortgage Backed Securities \| Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	4,362,561	3,633,304
Fair Value, Measurements, Recurring \| Mortgage Backed Securities \| Significant Unobservable Inputs (Level 3 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0	0
Fair Value, Measurements, Recurring \| Equity Securities \| Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	1,611
Fair Value, Measurements, Recurring \| Equity Securities \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	1,611
Fair Value, Measurements, Recurring \| Equity Securities \| Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	0
Fair Value, Measurements, Recurring \| Equity Securities \| Significant Unobservable Inputs (Level 3 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale	$ 0
Fair Value, Measurements, Recurring \| State, County, Municipal \| Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale		126
Fair Value, Measurements, Recurring \| State, County, Municipal \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale		0
Fair Value, Measurements, Recurring \| State, County, Municipal \| Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale		126
Fair Value, Measurements, Recurring \| State, County, Municipal \| Significant Unobservable Inputs (Level 3 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment securities available for sale		$ 0

Estimated Fair Values (Assets67

Estimated Fair Values (Assets And Liabilities Carried At Fair Value On A Nonrecurring Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Real Estate, Non Covered	$ 61,707		$ 70,454	$ 43,186		$ 36,898
Other Real Estate, Covered	8,152		22,982	29,272		47,081
Mortgage servicing rights	19,327	$ 18,162	16,688	$ 0	$ 0	$ 16
Fair Value, Measurements, Nonrecurring \| Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans not covered by loss share agreements	61,621		73,170
Other Real Estate, Non Covered	39,996		40,714
Other Real Estate, Covered	3,250		17,664
Mortgage servicing rights			13,562
Fair Value, Measurements, Nonrecurring \| Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans not covered by loss share agreements	0		0
Other Real Estate, Non Covered	0		0
Other Real Estate, Covered	0		0
Mortgage servicing rights			0
Fair Value, Measurements, Nonrecurring \| Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans not covered by loss share agreements	0		0
Other Real Estate, Non Covered	0		0
Other Real Estate, Covered	0		0
Mortgage servicing rights			0
Fair Value, Measurements, Nonrecurring \| Significant Unobservable Inputs (Level 3 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans not covered by loss share agreements	61,621		73,170
Other Real Estate, Non Covered	39,996		40,714
Other Real Estate, Covered	$ 3,250		17,664
Mortgage servicing rights			$ 13,562

Estimated Fair Values Estimated

Estimated Fair Values Estimated Fair Values (Fair Value Option) (Details) - Loans Held For Sale - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Option, Quantitative Disclosures [Line Items]
Gains (Losses) From Fair Value Changes	$ 1,347	$ 1,316
Fair Value Of Items For Which Fair Value Option Was Elected Assets	71,874	71,874	$ 63,696
Aggregate Unpaid Principal Balance Of Items For Which Fair Value Option Was Elected Assets	69,858	69,858	62,996
Fair Value Option Aggregate Difference Assets	$ 2,016	$ 2,016	$ 700

Employee Benefit Plans (Compone

Employee Benefit Plans (Components Of Pension Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
BancShares Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 3,358	$ 3,081	$ 10,561	$ 9,247
Interest cost	6,732	6,402	20,230	19,209
Expected return on assets	(8,302)	(7,296)	(24,896)	(23,448)
Amortization of prior service cost	53	53	158	158
Amortization of net actuarial loss	2,863	769	8,531	3,861
Total pension expense	4,704	$ 3,009	14,584	$ 9,027
Bancorporation Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	641		2,506
Interest cost	1,540		4,795
Expected return on assets	(2,873)		(8,612)
Amortization of prior service cost	0		0
Amortization of net actuarial loss	0		0
Total pension expense	$ (692)		$ (1,311)

Employee Benefit Plans (Narrati

Employee Benefit Plans (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015
BancShares Plan
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer	$ 0	$ 0
Bancorporation Plan
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Contributions by Employer	$ 0	$ 0

Commitments and Contingencies (

Commitments and Contingencies (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Guarantor Obligations [Line Items]
FDIC Indemnification Asset	$ 9,276	$ 5,808	$ 28,701	$ 45,140	$ 49,959	$ 93,397
FDIC loss share payable	124,038		116,535
Commitments to Extend Credit
Guarantor Obligations [Line Items]
Unused Commitments to Extend Credit	7,760,000		7,190,000
Qualified Affordable Housing Project Investments, Commitment	32,000		16,800
Standby Letters of Credit
Guarantor Obligations [Line Items]
Guarantor obligations amount	$ 85,200		77,400
Recourse Obligation on Mortgage Loans Sold
Guarantor Obligations [Line Items]
Recourse Period, Maximum1	120 days
Obligation to Repurchase Receivables Sold
Guarantor Obligations [Line Items]
Reserve for estimated losses arising from repurchase of loans	$ 3,100		$ 3,200

Transactions With Related Per72

Transactions With Related Persons (Details)	9 Months Ended
Transactions With Related Persons (Details)	Sep. 30, 2015
Related Party Transactions [Abstract]
Deposit Premium	1.00%

Derivatives (Narrative) (Detail

Derivatives (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Derivatives (Narrative) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Derivative [Line Items]
Fair value of collateral pledged to secure interest rate contracts	$ 2,000		$ 2,000		$ 7,000
Incremental interest expense paid to interest rate swap counterparties	829	$ 840	2,500	$ 2,500
2011 Interest Rate Swap
Derivative [Line Items]
Notional amount of interest rate derivatives	$ 93,500		$ 93,500
Fixed rate payments, interest rate	5.50%		5.50%		5.50%
Variable rate payment rate	1.75%		1.75%		1.75%

Derivatives (Schedule Of Intere

Derivatives (Schedule Of Interest Rate Swaps) (Details) - 2011 Interest Rate Swap - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Derivative [Line Items]
Estimated fair value of liability	$ 2,331	$ 4,337
Derivative, Notional Amount	$ 93,500	$ 93,500

Accumulated Other Comprehensi75

Accumulated Other Comprehensive Income (Loss) (Schedule Of Accumulated Other Comprehensive Income) (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
Accumulated Other Comprehensive Income (Loss), before Tax		$ (57,412)		$ (57,412)			$ (86,690)
Deferred tax expense (benefit)		(22,536)		(22,536)			(33,709)
Accumulated other comprehensive income (loss), net of tax		(34,876)	$ (1,858)	(34,876)	$ (1,858)	$ (51,159)	(52,981)	$ 4,057	$ (25,268)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		1,632	(503)	1,327	(2,456)
Reclassification adjustment for losses included in income before income taxes		2,916	822	8,689	4,019
Unrealized Gains on Investment Securities Available for Sale
Accumulated Other Comprehensive Income (Loss), before Tax		26,926		26,926			8,343
Deferred tax expense (benefit)		10,298		10,298			3,245
Accumulated other comprehensive income (loss), net of tax	[1]	16,628	9,490	16,628	9,490	2,604	5,098	16,490	(10,091)
Income taxes		(2,094)		(4,145)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	[1]	3,470	0	6,692	0
Funded Status of Defined Benefit Plan
Accumulated Other Comprehensive Income (Loss), before Tax		(82,007)		(82,007)			(90,696)
Deferred tax expense (benefit)		(31,957)		(31,957)			(35,281)
Accumulated other comprehensive income (loss), net of tax	[1]	(50,050)	(8,287)	(50,050)	(8,287)	(51,888)	(55,415)	(8,790)	(10,743)
Income taxes		1,078	319	3,324	1,563
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	[1]	(1,838)	(503)	(5,365)	(2,456)
Employee Benefits, prior service costs		(53)	(53)	(158)	(158)
Reclassification adjustment for losses included in income before income taxes		(2,863)	(769)	(8,531)	(3,861)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax		(2,916)	(822)	(8,689)	(4,019)
Unrealized Loss on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss), before Tax		(2,331)		(2,331)			(4,337)
Deferred tax expense (benefit)		(877)		(877)			(1,673)
Accumulated other comprehensive income (loss), net of tax	[1]	(1,454)	(3,061)	(1,454)	(3,061)	$ (1,875)	$ (2,664)	$ (3,643)	$ (4,434)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	[1]	$ 0	$ 0	$ 0	$ 0

[1]	All amounts are net of tax.

Accumulated Other Comprehensi76

Accumulated Other Comprehensive Income (Loss) (Components of AOCI) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance		$ (51,159)	$ 4,057	$ (52,981)	$ (25,268)
Other comprehensive income before reclassifications		17,915	(6,418)	19,432	20,954
Amounts reclassified from accumulated other comprehensive (loss) income		(1,632)	503	(1,327)	2,456
Net current period other comprehensive income		16,283	(5,915)	18,105	23,410
Ending balance		(34,876)	(1,858)	(34,876)	(1,858)
Unrealized Loss on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	[1]	(1,875)	(3,643)	(2,664)	(4,434)
Other comprehensive income before reclassifications	[1]	421	582	1,210	1,373
Amounts reclassified from accumulated other comprehensive (loss) income	[1]	0	0	0	0
Net current period other comprehensive income	[1]	421	582	1,210	1,373
Ending balance	[1]	(1,454)	(3,061)	(1,454)	(3,061)
Unrealized Gains on Investment Securities Available for Sale
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	[1]	2,604	16,490	5,098	(10,091)
Other comprehensive income before reclassifications	[1]	17,494	(7,000)	18,222	19,581
Amounts reclassified from accumulated other comprehensive (loss) income	[1]	(3,470)	0	(6,692)	0
Net current period other comprehensive income	[1]	14,024	(7,000)	11,530	19,581
Ending balance	[1]	16,628	9,490	16,628	9,490
Defined Benefit Pension Items
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	[1]	(51,888)	(8,790)	(55,415)	(10,743)
Other comprehensive income before reclassifications	[1]	0	0	0	0
Amounts reclassified from accumulated other comprehensive (loss) income	[1]	1,838	503	5,365	2,456
Net current period other comprehensive income	[1]	1,838	503	5,365	2,456
Ending balance	[1]	$ (50,050)	$ (8,287)	$ (50,050)	$ (8,287)

[1]	All amounts are net of tax.

Accumulated Other Comprehensi77

Accumulated Other Comprehensive Income (Loss) (Reclassifications out of AOCI) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Securities gains (losses)		$ 5,564	$ 0	$ 10,837	$ 0
Reclassification adjustment for losses included in income before income taxes		2,916	822	8,689	4,019
Amounts reclassified from accumulated other comprehensive income, net of tax		(1,632)	503	(1,327)	2,456
Unrealized Loss on Cash Flow Hedges
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Amounts reclassified from accumulated other comprehensive income, net of tax	[1]	0	0	0	0
Unrealized Gains on Investment Securities Available for Sale
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Securities gains (losses)		5,564		10,837
Income taxes		(2,094)		(4,145)
Amounts reclassified from accumulated other comprehensive income, net of tax	[1]	(3,470)	0	(6,692)	0
Defined Benefit Pension Items
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Employee Benefits, prior service costs		(53)	(53)	(158)	(158)
Reclassification adjustment for losses included in income before income taxes		(2,863)	(769)	(8,531)	(3,861)
Total before taxes		(2,916)	(822)	(8,689)	(4,019)
Income taxes		1,078	319	3,324	1,563
Amounts reclassified from accumulated other comprehensive income, net of tax	[1]	$ 1,838	$ 503	$ 5,365	$ 2,456

[1]	All amounts are net of tax.