UMB Financial (UMBF) 10-Q 4 Aug 15 2015 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Jul. 30, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2
Trading Symbol	UMBF
Entity Registrant Name	UMB FINANCIAL CORP
Entity Central Index Key	101,382
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		49,312,382

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
ASSETS
Loans:	$ 8,916,128	$ 7,465,794
Allowance for loan losses	(77,721)	(76,140)
Net loans	8,838,407	7,389,654
Loans held for sale	2,819	624
Securities:
Available for sale	6,925,115	6,911,936
Held to maturity (fair value of $475,391 and $304,112, respectively)	446,881	278,054
Trading securities	36,616	27,203
Other securities	77,800	68,474
Total investment securities	7,486,412	7,285,667
Federal funds sold and securities purchased under agreements to resell	91,326	118,105
Interest-bearing due from banks	698,940	1,539,386
Cash and due from banks	490,171	444,299
Premises and equipment, net	279,996	257,835
Accrued income	84,979	79,297
Goodwill	228,217	209,758
Other intangibles, net	53,649	43,991
Other assets	163,811	132,344
Total assets	18,418,727	17,500,960
Deposits:
Noninterest-bearing demand	5,887,525	5,643,989
Interest-bearing demand and savings	7,303,306	6,709,281
Time deposits under $100,000	479,820	424,925
Time deposits of $100,000 or more	825,995	838,664
Total deposits	14,496,646	13,616,859
Federal funds purchased and repurchase agreements	1,774,435	2,025,132
Long-term debt	88,346	8,810
Accrued expenses and taxes	155,246	180,074
Other liabilities	46,998	26,327
Total liabilities	16,561,671	15,857,202
SHAREHOLDERS' EQUITY
Common stock, $1.00 par value; 80,000,000 shares authorized; 55,056,730 shares issued; and 49,288,971 and 45,532,188 shares outstanding, respectively	55,057	55,057
Capital surplus	1,009,965	894,602
Retained earnings	1,005,563	963,911
Accumulated other comprehensive loss	(2,141)	11,006
Treasury stock, 5,767,759 and 9,524,542 shares, at cost, respectively	(211,388)	(280,818)
Total shareholders' equity	1,857,056	1,643,758
Total liabilities and shareholders' equity	$ 18,418,727	$ 17,500,960

Consolidated Balance Sheets (U3

Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Held to Maturity, Fair value	$ 475,391	$ 304,112
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	80,000,000	80,000,000
Common stock, shares issued	55,056,730	55,056,730
Common stock, shares outstanding	49,288,971	45,532,188
Treasury stock, shares	5,767,759	9,524,542

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
INTEREST INCOME
Loans	$ 71,396	$ 60,309	$ 135,628	$ 119,209
Securities:
Taxable interest	19,163	19,021	37,971	37,982
Tax-exempt interest	10,607	9,798	20,522	19,705
Total securities income	29,770	28,819	58,493	57,687
Federal funds and resell agreements	151	46	202	79
Interest-bearing due from banks	434	466	1,286	1,589
Trading securities	133	149	228	272
Total interest income	101,884	89,789	195,837	178,836
INTEREST EXPENSE
Deposits	3,522	3,092	6,570	6,151
Federal funds and repurchase agreements	470	454	962	935
Other	532	73	587	135
Total interest expense	4,524	3,619	8,119	7,221
Net interest income	97,360	86,170	187,718	171,615
Provision for loan losses	5,000	5,000	8,000	9,500
Net interest income after provision for loan losses	92,360	81,170	179,718	162,115
NONINTEREST INCOME
Trust and securities processing	67,381	73,357	134,680	144,920
Trading and investment banking	5,568	6,409	11,690	10,732
Service charges on deposit accounts	21,625	20,627	43,166	42,185
Insurance fees and commissions	586	732	1,156	1,335
Brokerage fees	2,936	3,075	5,790	4,890
Bankcard fees	18,035	17,185	34,218	32,808
Gain on sales of securities available for sale, net	967	2,569	8,303	4,039
Equity (loss) earnings on alternative investments	(1,125)	3,462	(1,967)	5,992
Other	3,577	6,585	7,721	10,064
Total noninterest income	119,550	134,001	244,757	256,965
NONINTEREST EXPENSE
Salaries and employee benefits	99,585	89,532	198,122	178,413
Occupancy, net	10,312	9,705	20,322	19,410
Equipment	15,410	12,920	29,582	25,583
Supplies and services	4,603	5,554	8,928	10,191
Marketing and business development	6,530	6,307	11,148	10,909
Processing fees	12,654	14,817	25,437	28,468
Legal and consulting	5,917	4,632	10,295	8,004
Bankcard	4,953	4,997	9,721	8,685
Amortization of other intangible assets	2,569	3,074	5,324	6,176
Regulatory fees	2,873	2,709	5,629	5,225
Contingency reserve		5,272		20,272
Other	6,558	6,682	11,869	16,796
Total noninterest expense	171,964	166,201	336,377	338,132
Income before income taxes	39,946	48,970	88,098	80,948
Income tax expense	9,732	14,298	24,119	22,863
NET INCOME	$ 30,214	$ 34,672	$ 63,979	$ 58,085
PER SHARE DATA
Net income - basic	$ 0.65	$ 0.77	$ 1.40	$ 1.30
Net income - diluted	0.65	0.76	1.39	1.28
Dividends	$ 0.235	$ 0.225	$ 0.470	$ 0.450
Weighted average shares outstanding - basic	46,240,869	44,823,370	45,624,276	44,782,944
Weighted average shares outstanding - diluted	46,611,096	45,421,148	46,029,978	45,409,289

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net Income	$ 30,214	$ 34,672	$ 63,979	$ 58,085
Unrealized (losses) gains on securities:
Change in unrealized holding (losses) gains, net	(45,553)	50,910	(12,877)	83,369
Less: Reclassifications adjustment for gains included in net income	(967)	(2,569)	(8,303)	(4,039)
Change in unrealized (losses) gains on securities during the period	(46,520)	48,341	(21,180)	79,330
Income tax benefit (expense)	17,569	(18,143)	8,033	(29,789)
Other comprehensive (loss) income	(28,951)	30,198	(13,147)	49,541
Comprehensive income	$ 1,263	$ 64,870	$ 50,832	$ 107,626

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Capital Surplus	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Treasury Stock
Beginning Balance at Dec. 31, 2013	$ 1,506,065	$ 55,057	$ 882,407	$ 884,630	$ (32,640)	$ (283,389)
Total comprehensive income	107,626			58,085	49,541
Dividends	(20,447)			(20,447)
Purchase of treasury stock	(3,165)					(3,165)
Issuance of equity awards	470		(3,395)			3,865
Recognition of equity based compensation	4,733		4,733
Net tax benefit related to equity compensation plans	1,202		1,202
Sale of treasury stock	459		300			159
Exercise of stock options	4,399		1,839			2,560
Ending Balance at Jun. 30, 2014	1,601,342	55,057	887,086	922,268	16,901	(279,970)
Beginning Balance at Dec. 31, 2014	1,643,758	55,057	894,602	963,911	11,006	(280,818)
Total comprehensive income	50,832			63,979	(13,147)
Dividends	(22,327)			(22,327)
Purchase of treasury stock	(5,379)					(5,379)
Issuance of equity awards	460		(5,509)			5,969
Recognition of equity based compensation	5,779		5,779
Net tax benefit related to equity compensation plans	664		664
Sale of treasury stock	503		306			197
Exercise of stock options	3,029		1,488			1,541
Common stock issuance for acquisition	179,737		112,635			67,102
Ending Balance at Jun. 30, 2015	$ 1,857,056	$ 55,057	$ 1,009,965	$ 1,005,563	$ (2,141)	$ (211,388)

Consolidated Statements of Cha7

Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Stockholders' Equity [Abstract]
Dividends, per share	$ 0.235	$ 0.225	$ 0.470	$ 0.450

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Operating Activities
Net Income	$ 63,979	$ 58,085
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	8,000	9,500
Depreciation and amortization	24,027	22,654
Deferred income tax benefit	(2,577)	(4,361)
Net increase in trading securities	(7,446)	(4,012)
Gains on sales of securities available for sale, net	(8,303)	(4,039)
Losses (gains) on sales of assets	5	(3,234)
Amortization of securities premiums, net of discount accretion	26,465	25,889
Originations of loans held for sale	(59,422)	(32,342)
Net gains on sales of loans held for sale	(827)	(495)
Proceeds from sales of loans held for sale	58,054	31,038
Equity based compensation	6,239	5,203
Advance payment on contingency reserve		6,000
Changes in:
Accrued income	(1,927)	4,411
Accrued expenses and taxes	(13,179)	(9,043)
Other assets and liabilities, net	12,647	(14,676)
Net cash provided by operating activities	105,735	90,578
Investing Activities
Proceeds from maturities of securities held to maturity	26,663	7,761
Proceeds from sales of securities available for sale	705,238	409,804
Proceeds from maturities of securities available for sale	645,959	791,895
Purchases of securities held to maturity	(198,352)	(48,830)
Purchases of securities available for sale	(1,238,323)	(1,079,530)
Net increase in loans	(473,924)	(409,806)
Net decrease in fed funds sold and resell agreements	37,111	4,366
Net increase in interest bearing balances due from other financial institutions	19,200	(79,772)
Purchases of premises and equipment	(29,479)	(19,261)
Net cash activity from acquisitions and branch sales	104,539	(18,111)
Proceeds from sales of premises and equipment	117	4,747
Net cash used in investing activities	(401,251)	(436,737)
Financing Activities
Net increase (decrease) in demand and savings deposits	239,367	(1,024,246)
Net decrease in time deposits	(303,635)	(421,900)
Net (decrease) increase in fed funds purchased and repurchase agreements	(250,697)	24,076
Net decrease in short-term debt	(112,133)	(107)
Proceeds from long-term debt		1,820
Repayment of long-term debt	(10,580)	(1,130)
Payment of contingent consideration on acquisitions	(18,702)	(13,725)
Cash dividends paid	(22,295)	(20,433)
Net tax benefit related to equity compensation plans	664	1,202
Proceeds from exercise of stock options and sales of treasury shares	3,532	4,858
Purchases of treasury stock	(5,379)	(3,165)
Net cash used in financing activities	(479,858)	(1,452,750)
Decrease in cash and cash equivalents	(775,374)	(1,798,909)
Cash and cash equivalents at beginning of period	1,787,230	2,582,428
Cash and cash equivalents at end of period	1,011,856	783,519
Supplemental Disclosures:
Income taxes paid	25,089	26,118
Total interest paid	7,360	$ 7,427
Transactions related to bank acquisitions
Assets acquired	1,321,322
Liabilities assumed	$ 1,160,044

Financial Statement Presentatio

Financial Statement Presentation	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Financial Statement Presentation	1. Financial Statement Presentation The consolidated financial statements include the accounts of UMB Financial Corporation and its subsidiaries (collectively, the Company) after elimination of all intercompany transactions. In the opinion of management of the Company, all adjustments, which were of a normal recurring nature and necessary for a fair presentation of the financial position and results of operations have been made. The results of operations and cash flows for the interim periods presented may not be indicative of the results of the full year. The financial statements should be read in conjunction with Management’s Discussion and Analysis of Financial Condition and Results of Operations within this Form 10-Q filing and in conjunction with the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2014.

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	2. Summary of Significant Accounting Policies The Company is a financial holding company, which offers a wide range of banking and other financial services to its customers through its branches and offices in the states of Missouri, Kansas, Colorado, Illinois, Oklahoma, Texas, Arizona, Nebraska, Pennsylvania, South Dakota, Indiana, Utah, Minnesota, and Wisconsin. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. These estimates and assumptions also impact reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. A summary of the significant accounting policies to assist the reader in understanding the financial presentation is provided in the Notes to Consolidated Financial Statements in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2014. Cash and cash equivalents Cash and cash equivalents include Cash and due from banks and amounts due from the Federal Reserve Bank. Cash on hand, cash items in the process of collection, and amounts due from correspondent banks are included in Cash and due from banks. Amounts due from the Federal Reserve Bank are interest-bearing for all periods presented and are included in the Interest-bearing due from banks line on the Company’s Consolidated Balance Sheets. This table provides a summary of cash and cash equivalents as presented on the Consolidated Statements of Cash Flows as of June 30, 2015 and June 30, 2014 (in thousands) June 30, 2015 2014 Due from the Federal Reserve $ 521,685 $ 143,641 Cash and due from banks 490,171 639,878 Cash and cash equivalents at end of period $ 1,011,856 $ 783,519 Also included in the Interest-bearing due from banks line, but not considered cash and cash equivalents, are interest-bearing accounts held at other financial institutions, which totaled $177.3 million and $111.8 million at June 30, 2015 and June 30, 2014, respectively. Per Share Data Basic income per share is computed based on the weighted average number of shares of common stock outstanding during each period. Diluted quarterly per share data includes the dilutive effect of 370,227 and 597,778 shares issuable upon the exercise of options granted by the Company and outstanding at June 30, 2015 and 2014, respectively. Diluted year-to-date income per share includes the dilutive effect of 405,702 and 626,345 shares issuable upon the exercise of stock options granted by the Company and outstanding at June 30, 2015 and 2014, respectively. Options issued under employee benefits plans to purchase 495,366 shares of common stock were outstanding at June 30, 2015, but were not included in the computation of quarter-to-date and year-to-date diluted EPS because the options were anti-dilutive. Options issued under employee benefits plans to purchase 253,149 shares of common stock were outstanding at June 30, 2014, but were not included in the computation of quarter-to-date and year-to-date diluted EPS because the options were anti-dilutive.

New Accounting Pronouncements

New Accounting Pronouncements	6 Months Ended
	Jun. 30, 2015
Accounting Changes and Error Corrections [Abstract]
New Accounting Pronouncements	3. New Accounting Pronouncements Accounting for Investments in Qualified Affordable Housing Projects Reclassification of Residential Real Estate Loans Revenue Recognition Repurchase-to-Maturity Transactions Stock Compensation Troubled Debt Restructurings by Creditors Going Concern Derivatives and Hedging Consolidation

Loans and Allowance for Loan Lo

Loans and Allowance for Loan Losses	6 Months Ended
	Jun. 30, 2015
Receivables [Abstract]
Loans and Allowance for Loan Losses	4. Loans and Allowance for Loan Losses Loan Origination/Risk Management The Company has certain lending policies and procedures in place that are designed to minimize the level of risk within the loan portfolio. Diversification of the loan portfolio manages the risk associated with fluctuations in economic conditions. The Company maintains an independent loan review department that reviews and validates the risk assessment on a continual basis. Management regularly evaluates the results of the loan reviews. The loan review process complements and reinforces the risk identification and assessment decisions made by lenders and credit personnel, as well as the Company’s policies and procedures. Commercial loans are underwritten after evaluating and understanding the borrower’s ability to operate profitably and prudently expand its business. Commercial loans are made based on the identified cash flows of the borrower and on the underlying collateral provided by the borrower. The cash flows of the borrower, however, may not be as expected and the collateral securing these loans may fluctuate in value. Most commercial loans are secured by the assets being financed or other business assets such as accounts receivable or inventory and may incorporate a personal guarantee. In the case of loans secured by accounts receivable, the availability of funds for the repayment of these loans may be substantially dependent on the ability of the borrower to collect amounts from its customers. Commercial credit cards are generally unsecured and are underwritten with criteria similar to commercial loans including an analysis of the borrower’s cash flow, available business capital, and overall credit-worthiness of the borrower. Asset-based loans are offered primarily in the form of revolving lines of credit to commercial borrowers that do not generally qualify for traditional bank financing. Asset-based loans are underwritten based primarily upon the value of the collateral pledged to secure the loan, rather than on the borrower’s general financial condition as traditionally reflected by cash flow, balance sheet strength, operating results, and credit bureau ratings. The Company utilizes proven pre-loan due diligence techniques, monitoring disciplines, and loan management practices common within the asset-based lending industry to underwrite loans to these borrowers. Factoring loans provide working capital through the purchase and/or financing of accounts receivable to borrowers in the transportation industry and to commercial borrowers that do not generally qualify for traditional bank financing. Credit risk is a potential loss resulting from nonpayment of either primary or secondary exposure. Credit risk is mitigated with formal risk management practices and a thorough initial credit-granting process including consistent underwriting standards and approval process. Control factors or techniques to minimize credit risk include knowing the client, understanding total exposure, analyzing the client and debtor’s financial capacity, and monitoring the clients’ activities. Credit risk and portions of the portfolio risk are managed through concentration considerations, average risk ratings, and other aggregate characteristics. It is necessary that policies, processes and practices implemented to control the risks of individual credit transactions and portfolio segments are sound and adhered to. Authority levels are established for the extension of credit to ensure consistency throughout the Company. Commercial real estate loans are subject to underwriting standards and processes similar to commercial loans, in addition to those of real estate loans. These loans are viewed primarily as cash flow loans and secondarily as loans secured by real estate. Commercial real estate lending typically involves higher loan principal amounts, and the repayment of these loans is largely dependent on the successful operation of the property securing the loan or the business conducted on the property securing the loan. The Company requires an appraisal of the collateral be made at origination and on an as-needed basis, in conformity with current market conditions and regulatory requirements. The underwriting standards address both owner and non-owner occupied real estate. Construction loans are underwritten using feasibility studies, independent appraisal reviews, sensitivity analysis or absorption and lease rates and financial analysis of the developers and property owners. Construction loans are based upon estimates of costs and value associated with the complete project. Construction loans often involve the disbursement of substantial funds with repayment substantially dependent on the success of the ultimate project. Sources of repayment for these types of loans may be pre-committed permanent loans, sales of developed property or an interim loan commitment from the Company until permanent financing is obtained. These loans are closely monitored by on-site inspections and are considered to have higher risks than other real estate loans due to their repayment being sensitive to interest rate changes, governmental regulation of real property, economic conditions, and the availability of long-term financing. Underwriting standards for residential real estate and home equity loans are based on the borrower’s loan-to-value percentage, collection remedies, and overall credit history. Consumer loans are underwritten based on the borrower’s repayment ability. The Company monitors delinquencies on all of its consumer loans and leases and periodically reviews the distribution of FICO scores relative to historical periods to monitor credit risk on its credit card loans. The underwriting and review practices combined with the relatively small loan amounts that are spread across many individual borrowers, minimizes risk. Consumer loans and leases that are 90 days past due or more are considered non-performing. The loan portfolio is comprised of loans originated by the Company and purchased loans in connection with the Company’s acquisition of Marquette Financial Companies (Marquette) on May 31, 2015 (Acquisition Date). The purchased loans were recorded at estimated fair value at the Acquisition Date with no carryover of the related allowance. The purchased loans were segregated between those considered to be performing, non-purchased credit impaired loans (Non-PCI) and those with evidence of credit deterioration, purchased credit impaired loans (PCI). Purchased loans are considered impaired if there is evidence of credit deterioration and if it is probable, at acquisition, all contractually required payments will not be collected. At Acquisition Date, gross loans purchased from the Marquette acquisition had a fair value of $980.3 million split between Non-PCI loans totaling $972.5 million and PCI loans totaling $7.8 million of loans. The gross contractually required principal and interest payments receivable for the Non-PCI loans and PCI loans totaled $983.9 million and $9.3 million, respectively. The fair value estimates for purchased loans are based on expected prepayments and the amount and timing of discounted expected principal, interest and other cash flows. Credit discounts representing the principal losses expected over the life of the loan are also a component of the initial fair value. In determining the Acquisition Date fair value of PCI loans, and in subsequent accounting, the Company generally aggregated purchased commercial, real estate, consumer, and lease loans into pools of loans with common risk characteristics. The difference between the fair value of Non-PCI loans and contractual amounts due at the Acquisition Date is accreted into income over the estimated life of the loans. Contractual amounts due represent the total undiscounted amount of all uncollected principal and interest payments. Loans accounted for under ASC Topic 310-30 The excess of PCI loans’ contractual amounts due over the amount of it undiscounted cash flows expected to be collected is referred to as the non-accretable difference. The non-accretable difference, which is neither accreted into income nor recorded on the consolidated balance sheet, reflects estimated future credit losses and uncollectible contractual interest expected to be incurred over the life of the PCI loans. The excess cash flows expected to be collected over the carrying amount of PCI loans is referred to as the accretable yield. This amount is accreted into interest income over the remaining life of the purchased loans or pools using the level yield method. The accretable yield is affected by changes in interest rate indices for variable rate loans, changes in prepayment speed assumptions and changes in expected principal and interest payments over the estimated lives of the PCI loans. Each quarter the Company evaluates the remaining contractual amounts due and estimates cash flows expected to be collected over the life of the PCI loans. Contractual amounts due may increase or decrease for a variety of reasons, for example, when the contractual terms of the loan agreement are modified, when interest rates on variable rate loans change, or when principal and/or interest payments are received. Cash flows expected to be collected on PCI loans are estimated by incorporating several key assumptions similar to the initial estimate of fair value. These key assumptions include probability of default, loss given default, and the amount of actual prepayments after the Acquisition Date. Prepayments affect the estimated lives of loans and could change the amount of interest income, and possibly principal, expected to be collected. In re-forecasting future estimated cash flows, credit loss expectations are adjusted as necessary. The adjustments are based, in part, on actual loss severities recognized for each loan type, as well as changes in the probability of default. For periods in which estimated cash flows are not reforecasted, the prior reporting period’s estimated cash flows are adjusted to reflect the actual cash received and credit events that transpired during the current reporting period. Increases in expected cash flows of PCI loans subsequent to the Acquisition Date are recognized prospectively through adjustments of the yield on the loans or pools over their remaining lives, while decreases in expected cash flows are recognized as impairment through a provision for loan losses and an increase in the allowance. The PCI loans are accounted for in accordance with ASC Topic 310-30, Loans and Debt Securities Purchased with Deteriorated Credit Quality Information about the PCI loan portfolio subject to purchased credit impairment accounting guidance (ASC 310-30) as of May 31, 2015 is as follows (in thousands): PCI Loans: At May 31, 2015 Contractually required principal and interest at acquisition $ 9,282 Non-accretable difference (1,307 ) Expected cash flows at acquisition 7,975 Accretable yield (164 ) Fair value of purchased loans $ 7,811 Below is the composition of the net book value for the PCI loans accounted for under ASC 310-30 at June 30, 2015 (in thousands) PCI Loans: June 30, 2015 Contractual cash flows $ 9,101 Non-accretable difference (1,307 ) Accretable yield (102 ) Loans accounted for under ASC 310-30 $ 7,692 Loan Aging Analysis This table provides a summary of loan classes and an aging of past due loans at June 30, 2015 and December 31, 2014 (in thousands): June 30, 2015 30-89 Greater Non- Accrual Total PCI Current Total Loans Loans Commercial: Commercial $ 11,249 $ 629 $ 19,322 $ 31,200 $ 2,490 $ 4,098,881 $ 4,132,571 Asset-based — — — — — 211,302 211,302 Factoring 12,892 188 — 13,080 — 96,132 109,212 Commercial – credit card 285 94 25 404 — 126,122 126,526 Real estate: Real estate – construction 1,719 — 813 2,532 532 392,784 395,848 Real estate – commercial 3,643 575 9,276 13,494 1,934 2,372,129 2,387,557 Real estate – residential 2,279 198 2,250 4,727 — 428,560 433,287 Real estate – HELOC 76 — 3,998 4,074 47 694,693 698,814 Consumer: Consumer – credit card 1,789 1,709 679 4,177 — 282,301 286,478 Consumer – other 2,627 4,252 1,286 8,165 2,689 83,606 94,460 Leases — — — — — 40,073 40,073 Total loans $ 36,559 $ 7,645 $ 37,649 $ 81,853 $ 7,692 $ 8,826,583 $ 8,916,128 June 30, 2015 30-89 Greater Current Total Loans PCI Loans Commercial: Commercial $ — $ 2,490 $ — $ 2,490 Asset-based — — — — Factoring — — — — Commercial – credit card — — — — Real estate: Real estate – construction — 532 — 532 Real estate – commercial — 1,934 — 1,934 Real estate – residential — — — — Real estate – HELOC — 47 — 47 Consumer: Consumer – credit card — — — — Consumer – other 171 20 2,498 2,689 Leases — — — — Total PCI loans $ 171 $ 5,023 $ 2,498 $ 7,692 December 31, 2014 30-89 Greater Non-Accrual Total Current Total Loans Commercial: Commercial $ 2,509 $ 363 $ 13,114 $ 15,986 $ 3,798,023 $ 3,814,009 Commercial – credit card 267 147 37 451 115,258 115,709 Real estate: Real estate – construction 1,244 — 983 2,227 253,779 256,006 Real estate – commercial 1,727 61 12,037 13,825 1,852,476 1,866,301 Real estate – residential 828 113 562 1,503 318,324 319,827 Real estate – HELOC 1,371 — 19 1,390 642,196 643,586 Consumer: Consumer – credit card 2,268 2,303 560 5,131 305,165 310,296 Consumer – other 1,743 843 70 2,656 98,314 100,970 Leases — — — — 39,090 39,090 Total loans $ 11,957 $ 3,830 $ 27,382 $ 43,169 $ 7,422,625 $ 7,465,794 Loans are considered past due or delinquent when the contractual principal or interest due in accordance with the terms of the loan agreement remains unpaid after the due date of the scheduled payment. Non-accrual loans include troubled debt restructurings on non-accrual status. Loan delinquency for all loans is shown in the tables above at June 30, 2015 and December 31, 2014, respectively. Non-PCI loans that become nonperforming are put on nonaccrual status and reported as nonperforming or past due using the same criteria applied to the originated loan portfolio. The Company has ceased the recognition of interest on loans with a carrying value of $37.6 million and $27.4 million at June 30, 2015 and December 31, 2014, respectively. Restructured loans totaled $27.0 million and $9.3 million at June 30, 2015 and December 31, 2014, respectively. Loans 90 days past due and still accruing interest amounted to $7.6 million and $3.8 million at June 30, 2015 and December 31, 2014, respectively. There was an insignificant amount of interest recognized on impaired loans during 2015 and 2014. The Company sold residential real estate loans with a face value of $58.1 million and $31.0 million in the secondary market without recourse during the six-month periods ended June 30, 2015 and June 30, 2014, respectively. Credit Quality Indicators As part of the on-going monitoring of the credit quality of the Company’s loan portfolio, management tracks certain credit quality indicators including trends related to the risk grading of specified classes of loans, net charge-offs, non-performing loans, and general economic conditions. The Company utilizes a risk grading matrix to assign a rating to each of its commercial, commercial real estate, and construction real estate loans. The loan rankings are summarized into the following categories: Non-watch list, Watch, Special Mention, and Substandard. Any loan not classified in one of the categories described below is considered to be a Non-watch list loan. A description of the general characteristics of the loan ranking categories is as follows: • Watch • Special Mention • Substandard All other classes of loans are generally evaluated and monitored based on payment activity. Non-performing loans include restructured loans on non-accrual and all other non-accrual loans. This table provides an analysis of the credit risk profile of each loan class excluded from ASC 310-30 at June 30, 2015 and December 31, 2014 (in thousands): Credit Exposure Credit Risk Profile by Risk Rating Originated and Non-PCI Loans Commercial Asset-based Factoring June 30, 2015 December 31, June 30, 2015 December 31, June 30, 2015 December 31, Non-watch list $ 3,863,331 $ 3,532,611 $ 168,138 $ — $ 105,116 $ — Watch 55,914 72,283 — — — — Special Mention 82,110 98,750 40,740 — — — Substandard 128,726 110,365 2,424 — 4,096 — Total $ 4,130,081 $ 3,814,009 $ 211,302 $ — $ 109,212 $ — Real estate-construction Real estate-commercial June 30, 2015 December 31, June 30, 2015 December 31, Non-watch list $ 392,754 $ 253,895 $ 2,297,846 $ 1,780,323 Watch 716 181 38,451 31,984 Special Mention — 756 17,597 8,691 Substandard 1,846 1,174 31,729 45,303 Total $ 395,316 $ 256,006 $ 2,385,623 $ 1,866,301 Credit Exposure Credit Risk Profile Based on Payment Activity Originated and Non-PCI Loans Commercial-credit card Real estate-residential Real estate-HELOC June 30, 2015 December 31, June 30, 2015 December 31, June 30, 2015 December 31, Performing $ 126,501 $ 115,672 $ 431,037 $ 319,265 $ 694,769 $ 643,567 Non-performing 25 37 2,250 562 3,998 19 Total $ 126,526 $ 115,709 $ 433,287 $ 319,827 $ 698,767 $ 643,586 Consumer-credit card Consumer-other Leases June 30, 2015 December 31, June 30, 2015 December 31, June 30, 2015 December 31, Performing $ 285,799 $ 309,736 $ 90,485 $ 100,900 $ 40,073 $ 39,090 Non-performing 679 560 1,286 70 — — Total $ 286,478 $ 310,296 $ 91,771 $ 100,970 $ 40,073 $ 39,090 This table provides an analysis of the credit risk profile of each loan class accounted for under ASC 310-30 at June 30, 2015 and December 31, 2014 (in thousands): Credit Exposure Credit Risk Profile by Risk Rating PCI Loans Commercial Real estate-construction Real estate-commercial June 30, 2015 December 31, June 30, 2015 December 31, June 30, 2015 December 31, Non-watch list $ 1,039 $ — $ — $ — $ — $ — Watch — — — — — — Special Mention — — — — — — Substandard 1,451 — 532 — 1,934 — Total $ 2,490 $ — $ 532 $ — $ 1,934 $ — Credit Exposure Credit Risk Profile Based on Payment Activity PCI Loans Real estate-HELOC Consumer-other June 30, 2015 December 31, June 30, 2015 December 31, Performing $ 47 $ — $ 2,689 $ — Non-performing — — — — Total $ 47 $ — $ 2,689 $ — Allowance for Loan Losses The allowance for loan losses is a reserve established through a provision for loan losses charged to expense, which represents management’s judgment of inherent probable losses within the Company’s loan portfolio as of the balance sheet date. The allowance is necessary to reserve for estimated loan losses and risks inherent in the loan portfolio. Accordingly, the methodology is based on historical loss trends. The Company’s process for determining the appropriate level of the allowance for loan losses is designed to account for credit deterioration as it occurs. The provision for probable loan losses reflects loan quality trends, including the levels of and trends related to non-accrual loans, past due loans, potential problem loans, criticized loans and net charge-offs or recoveries, among other factors. The level of the allowance reflects management’s continuing evaluation of industry concentrations, specific credit risks, loan loss experience, current loan portfolio quality, present economic, political and regulatory conditions and estimated losses inherent in the current loan portfolio. Portions of the allowance may be allocated for specific loans; however, the entire allowance is available for any loan that, in management’s judgment, should be charged off. While management utilizes its best judgment and information available, the adequacy of the allowance is dependent upon a variety of factors beyond the Company’s control, including, among other things, the performance of the Company’s loan portfolio, the economy, changes in interest rates and changes in the regulatory environment. The Company’s allowance for loan losses consists of specific valuation allowances and general valuation allowances based on historical loan loss experience for similar loans with similar characteristics and trends, general economic conditions and other qualitative risk factors both internal and external to the Company. The allowances established for probable losses on specific loans are based on a regular analysis and evaluation of impaired loans. Loans are classified based on an internal risk grading process that evaluates the obligor’s ability to repay, the underlying collateral, if any, and the economic environment and industry in which the borrower operates. When a loan is considered impaired, the loan is analyzed to determine the need, if any, to specifically allocate a portion of the allowance for loan losses to the loan. Specific valuation allowances are determined by analyzing the borrower’s ability to repay amounts owed, collateral deficiencies, the relative risk ranking of the loan and economic conditions affecting the borrower’s industry. General valuation allowances are calculated based on the historical loss experience of specific types of loans including an evaluation of the time span and volume of the actual charge-off. The Company calculates historical loss ratios for pools of similar loans with similar characteristics based on the proportion of actual charge-offs experienced to the total population of loans in the pool. The historical loss ratios are updated based on actual charge-off experience. A valuation allowance is established for each pool of similar loans based upon the product of the historical loss ratio, time span to charge-off, and the total dollar amount of the loans in the pool. The Company’s pools of similar loans include similarly risk-graded groups of commercial loans, commercial real estate loans, commercial credit card, home equity loans, consumer real estate loans and consumer and other loans. The Company also considers a loan migration analysis for criticized loans. This analysis includes an assessment of the probability that a loan will move to a loss position based on its risk rating. The consumer credit card pool is evaluated based on delinquencies and credit scores. In addition, a portion of the allowance is determined by a review of qualitative factors by management. Generally, the unsecured portion of a commercial or commercial real estate loan is charged off when, after analyzing the borrower’s financial condition, it is determined that the borrower is incapable of servicing the debt, little or no prospect for near term improvement exists, and no realistic and significant strengthening action is pending. For collateral-dependent commercial or commercial real estate loans, an analysis is completed regarding the Company’s collateral position to determine if the amounts due from the borrower are in excess of the calculated current fair value of the collateral. Specific allocations of the allowance for loan losses are made for any collateral deficiency. If a collateral deficiency is ultimately deemed to be uncollectible, the amount is charged off. Revolving commercial loans (such as commercial credit cards) which are past due 90 cumulative days are classified as a loss and charged off. Generally, a consumer loan, or a portion thereof, is charged off in accordance with regulatory guidelines which provide that such loans be charged off when the Company becomes aware of the loss, such as from a triggering event that may include, but is not limited to, new information about a borrower’s intent and ability to repay the loan, bankruptcy, fraud, or death. However, the charge-off timeframe should not exceed the specified delinquency time frames, which state that closed-end retail loans (such as real estate mortgages, home equity loans and consumer installment loans) that become past due 120 cumulative days and open-end retail loans (such as home equity lines of credit and consumer credit cards) that become past due 180 cumulative days are classified as a loss and charged off. In accordance with purchase accounting rules, purchased loans were recorded at fair value at the Acquisition Date and the prior allowance was eliminated. No allowance has been established on these purchased loans through June 30, 2015. ALLOWANCE FOR LOAN LOSSES AND RECORDED INVESTMENT IN LOANS This table provides a rollforward of the allowance for loan losses by portfolio segment for the three and six months ended June 30, 2015 (in thousands): Three Months Ended June 30, 2015 Commercial Real estate Consumer Leases Total Allowance for loan losses: Beginning balance $ 55,659 $ 11,912 $ 9,780 $ 128 $ 77,479 Charge-offs (3,088 ) (68 ) (2,446 ) — (5,602 ) Recoveries 89 77 678 — 844 Provision 6,718 (3,029 ) 1,276 35 5,000 Ending balance $ 59,378 $ 8,892 $ 9,288 $ 163 $ 77,721 Six Months Ended June 30, 2015 Commercial Real estate Consumer Leases Total Allowance for loan losses: Beginning balance $ 55,349 $ 10,725 $ 9,921 $ 145 $ 76,140 Charge-offs (3,500 ) (100 ) (5,150 ) — (8,750 ) Recoveries 899 92 1,340 — 2,331 Provision 6,630 (1,825 ) 3,177 18 8,000 Ending balance $ 59,378 $ 8,892 $ 9,288 $ 163 $ 77,721 Ending balance: individually evaluated for impairment $ 1,266 $ 295 $ — $ — $ 1,561 Ending balance: collectively evaluated for impairment 58,112 8,597 9,288 163 76,160 Loans: Ending balance: loans $ 4,579,611 $ 3,915,506 $ 380,938 $ 40,073 $ 8,916,128 Ending balance: individually evaluated for impairment 32,818 9,113 1,240 — 43,171 Ending balance: collectively evaluated for impairment 4,546,793 3,906,393 379,698 40,073 8,872,957 This table provides a rollforward of the allowance for loan losses by portfolio segment for the three and six months ended June 30, 2014 (in thousands): Three Months Ended June 30, 2014 Commercial Real estate Consumer Leases Total Allowance for loan losses: Beginning balance $ 48,363 $ 16,091 $ 10,984 $ 76 $ 75,514 Charge-offs (1,476 ) (55 ) (3,048 ) — (4,579 ) Recoveries 201 8 658 — 867 Provision 5,345 (1,827 ) 1,480 2 5,000 Ending balance $ 52,433 $ 14,217 $ 10,074 $ 78 $ 76,802 Six Months Ended June 30, 2014 Commercial Real estate Consumer Leases Total Allowance for loan losses: Beginning balance $ 48,886 $ 15,342 $ 10,447 $ 76 $ 74,751 Charge-offs (2,947 ) (181 ) (6,136 ) — (9,264 ) Recoveries 268 17 1,530 — 1,815 Provision 6,226 (961 ) 4,233 2 9,500 Ending balance $ 52,433 $ 14,217 $ 10,074 $ 78 $ 76,802 Ending balance: individually evaluated for impairment $ 2,497 $ 1,118 $ — $ — $ 3,615 Ending balance: collectively evaluated for impairment 49,936 13,099 10,074 78 73,187 Loans: Ending balance: loans $ 3,658,124 $ 2,859,563 $ 379,203 $ 23,793 $ 6,920,683 Ending balance: individually evaluated for impairment 14,517 12,407 1 — 26,925 Ending balance: collectively evaluated for impairment 3,643,607 2,847,156 379,202 23,793 6,893,758 Impaired Loans This table provides an analysis of impaired loans by class at June 30, 2015 and December 31, 2014 (in thousands): As of June 30, 2015 Unpaid Recorded Recorded Total Related Average Recorded Commercial: Commercial $ 36,941 $ 20,925 $ 11,893 $ 32,818 $ 1,266 $ 21,239 Asset-based — — — — — — Factoring — — — — — — Commercial – credit card — — — — — — Real estate: Real estate – construction 1,453 813 121 934 59 960 Real estate – commercial 6,254 3,960 1,579 5,539 236 8,930 Real estate – residential 2,544 2,410 — 2,410 — 1,433 Real estate – HELOC 255 230 — 230 — 77 Consumer: Consumer – credit card — — — — — — Consumer – other 1,240 1,240 — 1,240 — 414 Leases — — — — — — Total $ 48,687 $ 29,578 $ 13,593 $ 43,171 $ 1,561 $ 33,053 As of December 31, 2014 Unpaid Recorded Recorded Total Related Average Recorded Commercial: Commercial $ 21,758 $ 13,928 $ 3,132 $ 17,060 $ 972 $ 16,022 Commercial – credit card — — — — — — Real estate: Real estate – construction 1,540 983 — 983 — 939 Real estate – commercial 9,546 4,454 3,897 8,351 935 11,298 Real estate – residential 1,083 909 — 909 — 1,006 Real estate – HELOC — — — — — — Consumer: Consumer – credit card — — — — — — Consumer – other 1 1 — 1 — 12 Leases — — — — — — Total $ 33,928 $ 20,275 $ 7,029 $ 27,304 $ 1,907 $ 29,277 PCI loans are not subject to individual evaluation for impairment and are not reported as impaired loans based on PCI loan accounting. Troubled Debt Restructurings A loan modification is considered a troubled debt restructuring (TDR) when a concession has been granted to a debtor experiencing financial difficulties. The Company’s modifications generally include interest rate adjustments, principal reductions, and amortization and maturity date extensions. These modifications allow the debtor short-term cash relief to allow them to improve their financial condition. The Company’s restructured loans are individually evaluated for impairment and evaluated as part of the allowance for loan losses as described above in the Allowance for Loan Losses section of this note. Purchased loans restructured after acquisition are not considered or reported as troubled debt restructurings if the loans evidenced credit deterioration as of the Acquisition Date and are accounted for in pools. No purchased loans were modified as troubled debt restructurings after the Acquisition Date. The Company had $293 thousand in commitments to lend to borrowers with loan modifications classified as TDR’s. The Company monitors loan payments on an on-going basis to determine if a loan is considered to have a payment default. Determination of payment default involves analyzing the economic conditions that exist for each customer and their ability to generate positive cash flows during the loan term. During the six month period ended June 30, 2015, the Company had one commercial real estate loan classified as a TDR with a payment default totaling $178 thousand. A specific valuation allowance for the full amount of this loan had previously been established within the Company’s allowance for loan losses, and this loan was charged off against the allowance for loan losses during the current period. This table provides a summary of loans restructured by class during the three and six months ended June 30, 2015 (in thousands): Three Months Ended June 30, 2015 Six Months Ended June 30, 2015 Number Pre- Modification Post- Number Pre- Modification Post- Troubled Debt Restructurings Commercial: Commercial 14 $ 19,463 $ 19,463 14 $ 19,463 $ 19,463 Asset-based — — — — — — Factoring — — — — — — Commercial – credit card — — — — — — Real estate: Real estate – construction — — — — — — Real estate – commercial — — — — — — Real estate – residential 1 121 121 1 121 121 Real estate – HELOC — — — — — — Consumer: Consumer – credit card — — — — — — Consumer – other — — — — — — Leases — — — — — — Total 15 $ 19,584 $ 19,584 15 $ 19,584 $ 19,584 This table provides a summary of loans restructured by class during the three and six months ended June 30, 2014 (in thousands): Three Months Ended June 30, 2014 Six Months Ended June 30, 2014 Number Pre- Modification Post- Number Pre- Modification Post- Troubled Debt Restructurings Commercial: Commercial — $ — $ — 1 $ 469 $ 469 Commercial – credit card — — — — — — Real estate: Real estate – construction — — — — — — Real estate – commercial — — — — — — Real estate – residential 3 210 234 3 210 234 Real estate – HELOC — — — — — — Consumer: Consumer – credit card — — — — — — Consumer – other — — — — — — Leases — — — — — — Total 3 $ 210 $ 234 4 $ 679 $ 703

Securities

Securities	6 Months Ended
	Jun. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Securities	5. Securities Securities Available for Sale This table provides detailed information about securities available for sale at June 30, 2015 and December 31, 2014 (in thousands): Gross Gross Amortized Unrealized Unrealized Fair Cost Gains Losses Value June 30, 2015 U.S. Treasury $ 353,174 $ 747 $ (6 ) $ 353,915 U.S. Agencies 807,484 1,162 (491 ) 808,155 Mortgage-backed 3,535,277 20,064 (31,050 ) 3,524,291 State and political subdivisions 2,151,526 18,032 (11,460 ) 2,158,098 Corporates 81,122 27 (493 ) 80,656 Total $ 6,928,583 $ 40,032 $ (43,500 ) $ 6,925,115 Gross Gross Amortized Unrealized Unrealized Fair Cost Gains Losses Value December 31, 2014 U.S. Treasury $ 519,484 $ 501 $ (525 ) $ 519,460 U.S. Agencies 991,084 780 (1,175 ) 990,689 Mortgage-backed 3,276,009 28,470 (26,875 ) 3,277,604 State and political subdivisions 1,983,549 22,973 (5,165 ) 2,001,357 Corporates 124,096 — (1,270 ) 122,826 Total $ 6,894,222 $ 52,724 $ (35,010 ) $ 6,911,936 The following table presents contractual maturity information for securities available for sale at June 30, 2015 (in thousands): Amortized Fair Cost Value Due in 1 year or less $ 638,122 $ 639,044 Due after 1 year through 5 years 1,811,855 1,821,535 Due after 5 years through 10 years 863,778 862,706 Due after 10 years 79,551 77,539 Total 3,393,306 3,400,824 Mortgage-backed securities 3,535,277 3,524,291 Total securities available for sale $ 6,928,583 $ 6,925,115 Securities may be disposed of before contractual maturities due to sales by the Company or because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. For the six months ended June 30, 2015, proceeds from the sales of securities available for sale were $705.2 million compared to $409.8 million for the same period in 2014. Securities transactions resulted in gross realized gains of $8.4 million and $4.1 million for the six months ended June 30, 2015 and 2014, respectively. The gross realized losses for the six months ended June 30, 2015 and 2014 were $48 thousand and $11 thousand, respectively. Securities available for sale with a market value of $5.6 billion at June 30, 2015 and $5.7 billion at December 31, 2014 were pledged to secure U.S. Government deposits, other public deposits, and certain trust deposits as required by law. Of this amount, securities with a market value of $1.5 billion at June 30, 2015 and $1.2 billion at December 31, 2014 were pledged at the Federal Reserve Discount Window but were unencumbered as of those dates. The following table shows the Company’s available for sale investments’ gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at June 30, 2015 and December 31, 2014 (in thousands): Less than 12 months 12 months or more Total June 30, 2015 Fair Value Unrealized Fair Value Unrealized Fair Value Unrealized Description of Securities U.S. Treasury $ 9,965 $ (6 ) $ — $ — $ 9,965 $ (6 ) U.S. Agencies 104,031 (176 ) 64,711 (315 ) 168,742 (491 ) Mortgage-backed 1,503,100 (16,552 ) 399,744 (14,498 ) 1,902,844 (31,050 ) State and political subdivisions 875,725 (9,166 ) 73,175 (2,294 ) 948,900 (11,460 ) Corporates 17,831 (73 ) 51,045 (420 ) 68,876 (493 ) Total temporarily- impaired debt securities available for sale $ 2,510,652 $ (25,973 ) $ 588,675 $ (17,527 ) $ 3,099,327 $ (43,500 ) December 31, 2014 Less than 12 months 12 months or more Total Fair Value Unrealized Fair Value Unrealized Fair Value Unrealized Description of Securities U.S. Treasury $ 236,591 $ (329 ) $ 14,863 $ (196 ) $ 251,454 $ (525 ) U.S. Agencies 387,999 (689 ) 81,593 (486 ) 469,592 (1,175 ) Mortgage-backed 727,142 (8,370 ) 616,044 (18,504 ) 1,343,186 (26,874 ) State and political subdivisions 401,934 (1,406 ) 226,678 (3,760 ) 628,612 (5,166 ) Corporates 36,655 (243 ) 86,171 (1,027 ) 122,826 (1,270 ) Total temporarily- impaired debt securities available for sale $ 1,790,321 $ (11,037 ) $ 1,025,349 $ (23,973 ) $ 2,815,670 $ (35,010 ) The unrealized losses in the Company’s investments in U.S. treasury obligations, U.S. government agencies, Government Sponsored Entity (GSE) mortgage-backed securities, municipal securities, and corporates were caused by changes in interest rates. The Company does not have the intent to sell these securities and does not believe it is more likely than not that the Company will be required to sell these securities before a recovery of amortized cost. The Company expects to recover its cost basis in the securities and does not consider these investments to be other-than-temporarily impaired at June 30, 2015. Securities Held to Maturity The table below provides detailed information for securities held to maturity at June 30, 2015 and December 31, 2014 (in thousands): Gross Gross Amortized Unrealized Unrealized Fair Cost Gains Losses Value June 30, 2015 State and political subdivisions $ 446,881 $ 28,510 $ — $ 475,391 December 31, 2014 State and political subdivisions $ 278,054 $ 26,058 $ — $ 304,112 The following table presents contractual maturity information for securities held to maturity at June 30, 2015 (in thousands): Amortized Fair Cost Value Due in 1 year or less $ 2,157 $ 2,295 Due after 1 year through 5 years 74,653 79,416 Due after 5 years through 10 years 284,028 302,148 Due after 10 years 86,043 91,532 Total securities held to maturity $ 446,881 $ 475,391 Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. There were no sales of securities held to maturity during the first six months of 2015 or 2014. Trading Securities The net unrealized gains on trading securities at June 30, 2015 and June 30, 2014 were $156 thousand and $41 thousand, respectively, and were included in trading and investment banking income on the Consolidated Statements of Income. Other Securities The table below provides detailed information for Federal Reserve Bank stock and other securities at June 30, 2015 and December 31, 2014 (in thousands): Gross Gross Amortized Unrealized Unrealized Fair Cost Gains Losses Value June 30, 2015 FRB and FHLB stock $ 37,300 $ — $ — $ 37,300 Other securities – marketable — 17,031 — 17,031 Other securities – non-marketable 21,939 1,609 (79 ) 23,469 Total Federal Reserve Bank stock and other $ 59,239 $ 18,640 $ (79 ) $ 77,800 December 31, 2014 FRB and FHLB stock $ 26,279 $ — $ — $ 26,279 Other securities – marketable — 16,668 — 16,668 Other securities – non-marketable 21,669 3,937 (79 ) 25,527 Total Federal Reserve Bank stock and other $ 47,948 $ 20,605 $ (79 ) $ 68,474 Investment in Federal Reserve Bank (FRB) stock is based on the capital structure of the investing bank, and investment in Federal Home Loan Bank (FHLB) stock is mainly tied to the level of borrowings from the FHLB. These holdings are carried at cost. Other marketable and non-marketable securities include Prairie Capital Management (PCM) alternative investments in hedge funds and private equity funds, which are accounted for as equity-method investments. The fair value of other marketable securities includes alternative investment securities of $17.0 million at June 30, 2015 and $16.7 million at December 31, 2014. The fair value of other non-marketable securities includes alternative investment securities of $2.4 million at June 30, 2015 and $8.5 million at December 31, 2014. Unrealized gains or losses on alternative investments are recognized in the Equity earnings on alternative investments line of the Company’s Consolidated Statements of Income.

Goodwill and Other Intangibles

Goodwill and Other Intangibles	6 Months Ended
	Jun. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangibles	6. Goodwill and Other Intangibles Changes in the carrying amount of goodwill for the periods ended June 30, 2015 and December 31, 2014 by reportable segment are as follows (in thousands): Bank Institutional Asset Total Balances as of January 1, 2015 $ 142,753 $ 47,529 $ 19,476 $ 209,758 Acquisition of Marquette Financial Companies 18,459 — — 18,459 Balances as of June 30, 2015 $ 161,212 $ 47,529 $ 19,476 $ 228,217 Balances as of January 1, 2014 $ 142,753 $ 47,529 $ 19,476 $ 209,758 Balances as of December 31, 2014 $ 142,753 $ 47,529 $ 19,476 $ 209,758 Following are the finite-lived intangible assets that continue to be subject to amortization as of June 30, 2015 and December 31, 2014 (in thousands): As of June 30, 2015 Gross Carrying Accumulated Net Core deposit intangible assets $ 36,497 $ 33,186 $ 3,311 Core deposit – Marquette Acquisition 10,931 153 10,778 Customer relationships 104,560 69,503 35,057 Customer Relationships – Marquette Acquisition 3,100 29 3,071 Other intangible assets 3,247 2,726 521 Other intangible assets – Marquette Acquisition 951 40 911 Total intangible assets $ 159,286 $ 105,637 $ 53,649 As of December 31, 2014 Gross Carrying Accumulated Net Core deposit intangible assets $ 36,497 $ 32,721 $ 3,776 Customer relationships 104,560 64,980 39,580 Other intangible assets 3,247 2,612 635 Total intangible assets $ 144,304 $ 100,313 $ 43,991 Following is the aggregate amortization expense recognized in each period (in thousands) Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Aggregate amortization expense $ 2,569 $ 3,074 $ 5,324 $ 6,176 Estimated amortization expense of intangible assets on future years (in thousands): For the six months ending December 31, 2015 $ 5,854 For the year ending December 31, 2016 11,069 For the year ending December 31, 2017 9,549 For the year ending December 31, 2018 7,160 For the year ending December 31, 2019 6,370 For the year ending December 31, 2020 5,624

Business Segment Reporting

Business Segment Reporting	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Business Segment Reporting	7. Business Segment Reporting The Company has strategically aligned its operations into the following four reportable segments (collectively, “Business Segments”): Bank, Payment Solutions, Institutional Investment Management, and Asset Servicing. Business segment financial results produced by the Company’s internal management reporting system are evaluated regularly by senior executive officers in deciding how to allocate resources and assess performance for individual Business Segments. The management reporting system assigns balance sheet and income statement items to each business segment using methodologies that are refined on an ongoing basis. For comparability purposes, amounts in all periods presented are based on methodologies in effect at June 30, 2015. Previously reported results have been reclassified to conform to the current organizational structure. The following summaries provide information about the activities of each segment: The Bank Payment Solutions Institutional Investment Management Asset Servicing Business Segment Information Segment financial results were as follows ( in thousands Three Months Ended June 30, 2015 Bank Payment Institutional Asset Total Net interest income $ 82,758 $ 13,599 $ — $ 1,003 $ 97,360 Provision for loan losses 2,612 2,388 — — 5,000 Noninterest income 47,548 23,293 25,684 23,025 119,550 Noninterest expense 107,293 26,399 18,285 19,987 171,964 Income before taxes 20,401 8,105 7,399 4,041 39,946 Income tax expense 4,915 2,046 1,785 986 9,732 Net income $ 15,486 $ 6,059 $ 5,614 $ 3,055 $ 30,214 Average assets $ 13,423,000 $ 2,980,000 $ 70,000 $ 940,000 $ 17,413,000 Three Months Ended June 30, 2014 Bank Payment Institutional Asset Total Net interest income $ 72,481 $ 12,390 $ (1 ) $ 1,300 $ 86,170 Provision for loan losses 2,686 2,314 — — 5,000 Noninterest income 56,024 21,201 33,999 22,777 134,001 Noninterest expense 100,788 24,506 22,053 18,854 166,201 Income before taxes 25,031 6,771 11,945 5,223 48,970 Income tax expense 7,482 1,931 3,389 1,496 14,298 Net income $ 17,549 $ 4,840 $ 8,556 $ 3,727 $ 34,672 Average assets $ 12,008,000 $ 2,148,000 $ 69,000 $ 1,393,000 $ 15,618,000 Six Months Ended June 30, 2015 Bank Payment Solutions Institutional Asset Total Net interest income $ 158,085 $ 27,632 $ 1 $ 2,000 $ 187,718 Provision for loan losses 4,211 3,789 — — 8,000 Noninterest income 99,099 46,432 52,768 46,458 244,757 Noninterest expense 207,861 51,062 36,227 41,227 336,377 Income before taxes 45,112 19,213 16,542 7,231 88,098 Income tax expense 12,313 5,373 4,511 1,922 24,119 Net income $ 32,799 $ 13,840 $ 12,031 $ 5,309 $ 63,979 Average assets $ 13,089,000 $ 3,031,000 $ 72,000 $ 932,000 $ 17,124,000 Six Months Ended June 30, 2014 Bank Payment Institutional Asset Total Net interest income $ 143,602 $ 24,778 $ (3 ) $ 3,238 $ 171,615 Provision for loan losses 5,112 4,388 — — 9,500 Noninterest income 103,458 41,420 68,094 43,993 256,965 Noninterest expense 208,337 45,453 47,943 36,399 338,132 Income before taxes 33,611 16,357 20,148 10,832 80,948 Income tax expense 9,801 4,524 5,532 3,006 22,863 Net income $ 23,810 $ 11,833 $ 14,616 $ 7,826 $ 58,085 Average assets $ 12,204,000 $ 2,023,000 $ 71,000 $ 1,767,000 $ 16,065,000

Acquisition

Acquisition	6 Months Ended
	Jun. 30, 2015
Business Combinations [Abstract]
Acquisition	8. Acquisition On May 31, 2015, the Company acquired 100% of the outstanding common shares of Marquette Financial Companies. Marquette was a privately held financial services company with a portfolio of businesses and operates thirteen branches in Arizona and Texas, two national commercial specialty-lending businesses focused on asset-based lending and accounts receivable factoring, as well as an asset-management firm. As a result of the acquisition, the Company expects to increase its presence in Arizona and Texas and supplement the Company’s commercial-banking services with factoring and asset-based lending businesses. As of the close of trading on the Acquisition Date, the beneficial owners of Marquette received 9.2295 shares of the Company’s common stock for each share of Marquette common stock owned at that date (approximately 3.47 million shares total). The market value of the shares of the Company’s common stock issued at the effective time of the merger was approximately $179.7 million, based on the closing stock price of $51.79 on May 29, 2015. The transaction was accounted for using the purchased method of accounting in accordance with Financial Accounting Standards Board (FASB) ASC Topic 805, Business Combinations The following table summarizes the net assets acquired (at fair value) and consideration transferred for Marquette (in thousands, except for per share data): Assets Loans $ 980,250 Investment securities 177,803 Cash and due from banks 104,539 Premises and equipment, net 11,508 Identifiable intangible assets 14,982 Other assets 32,240 Total Assets Acquired $ 1,321,322 Liabilities Noninterest-bearing deposits $ 235,426 Interest-bearing deposits 708,629 Short-term debt 112,133 Long-term debt 89,971 Other liabilities 13,885 Total liabilities assumed $ 1,160,044 Net identifiable assets acquired $ 161,278 Preliminary goodwill 18,459 Net assets acquired $ 179,737 Consideration Company’s common shares issued 3,470 Purchase price per share of the Company’s common stock $ 51.79 Fair value of total consideration transferred $ 179,737 In the acquisition, the Company purchased $980.3 million of loans at fair value. All non-performing loans and select other classified loan relationships considered by management to be credit impaired are accounted for pursuant to ASC Topic 310-30, as previously discussed within Note 4, “Loans and Allowance for Loan Losses.” The Company assumed long-term debt obligations with an aggregate balance of $103.1 million and an aggregate fair value of $65.5 million as of the Acquisition Date payable to four unconsolidated trusts (Marquette Capital Trust I, Marquette Capital Trust II, Marquette Capital Trust III, and Marquette Capital Trust IV) that have issued trust preferred securities. The interest rate on the trust preferred securities issued by Marquette Capital Trust II are fixed at 6.30 percent until January 2016, and then reset each quarter at a variable rate tied to the three-month London Interbank Offered Rate (LIBOR) rate plus 133 basis points thereafter. Interest rates on trust preferred securities issued by the remaining three trusts are tied to the three-month LIBOR rate with spreads ranging from 133 basis points to 160 basis points, and reset quarterly. The trust preferred securities have maturity dates ranging from January 2036 to September 2036. The amount of goodwill arising from the acquisition reflects the Company’s increased market share and related synergies that are expected to result from combining the operations of UMB and Marquette. All of the goodwill was assigned to the Bank segment. In accordance with ASC 350, Intangibles-Goodwill and Other The fair value of the acquired assets and liabilities noted in the table above is provisional pending receipt of the final valuation for those assets and liabilities. During the provisional period, which may last up to twelve months subsequent to the acquisition date, the Company will obtain additional information to refine the valuation of the acquired assets and liabilities. The Company expects that some adjustments to the fair value of the acquired assets and liabilities will be recorded after June 30, 2015, although such adjustments are not expected to be significant. The results of Marquette are included in the results of the Company subsequent to the Acquisition Date. Included in Salaries and employee benefits and Legal and consulting expenses in the Company’s Consolidated Statements of Income for the six months ending June 30, 2015 were $1.5 million of expenses related to the acquisition of Marquette. The following pro forma information combines the historical results of Marquette and the Company. The pro forma financial information does not include the potential impacts of possible business model changes, current market conditions, revenue enhancements, expense efficiencies, or other factors. The pro forma information below reflects adjustments made to exclude the impact of acquisition-related expenses of $1.5 million, amortization and accretion of purchase discounts and premiums of $402 thousand, and amortization of acquired identifiable intangibles of $220 thousand during the six month period ended June 30, 2015. The pro forma information is theoretical in nature and not necessarily indicative of future consolidated results of operations of the Company or the consolidated results of operations which would have resulted had the Company acquired Marquette during the periods presented. If the Marquette acquisition had been completed on January 1, 2014, total revenue would have been approximately $452.6 million and $460.7 million for the six month periods ended June 30, 2015 and June 30, 2014, respectively. Net income would have been approximately $62.9 million and $62.3 million, respectively, for the same periods. Basic earnings per share would have been $1.34 for both periods. The Company has determined that it is impractical to report the amounts of revenue and earnings of legacy Marquette since the Acquisition Date due to the integration of operations shortly after the Acquisition Date. Accordingly, reliable and separate complete revenue and earnings information is no longer available. In addition, such amounts would require significant estimates related to the proper allocation of merger cost savings that cannot be objectively made.

Commitments, Contingencies and

Commitments, Contingencies and Guarantees	6 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments, Contingencies and Guarantees	9. Commitments, Contingencies and Guarantees In the normal course of business, the Company is party to financial instruments with off-balance-sheet risk in order to meet the financing needs of its customers and to reduce its own exposure to fluctuations in interest rates. These financial instruments include commitments to extend credit, commercial letters of credit, standby letters of credit, futures contracts, forward foreign exchange contracts and spot foreign exchange contracts. These instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amounts recognized in the consolidated balance sheet. The contract or notional amount of those instruments reflects the extent of involvement the Company has in particular classes of financial instruments. Many of the commitments expire without being drawn upon; therefore, the total amount of these commitments does not necessarily represent the future cash requirements of the Company. The Company’s exposure to credit loss in the event of nonperformance by the counterparty to the financial instruments for commitments to extend credit, commercial letters of credit, and standby letters of credit is represented by the contract or notional amount of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. The following table summarizes the Company’s off-balance sheet financial instruments. Contract or Notional Amount (in thousands): June 30, December 31, 2015 2014 Commitments to extend credit for loans (excluding credit card loans) $ 4,464,244 $ 3,509,841 Commitments to extend credit under credit card loans 2,851,533 2,690,752 Commercial letters of credit 6,403 1,334 Standby letters of credit 364,826 375,003 Futures contracts 5,200 — Forward foreign exchange contracts 90,584 144,950 Spot foreign exchange contracts 6,390 14,721

Derivatives and Hedging Activit

Derivatives and Hedging Activities	6 Months Ended
	Jun. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	10. Derivatives and Hedging Activities Risk Management Objective of Using Derivatives The Company is exposed to certain risks arising from both its business operations and economic conditions. The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate, liquidity, and credit risk, primarily by managing the amount, sources, and duration of its assets and liabilities. Specifically, the Company enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. The Company’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the Company’s known or expected cash receipts and its known or expected cash payments principally related to certain fixed rate assets and liabilities. The Company also has interest rate derivatives that result from a service provided to certain qualifying customers and, therefore, are not used to manage interest rate risk of the Company’s assets or liabilities. The Company has entered into an offsetting position for each of these derivative instruments with a matching instrument from another financial institution in order to minimize its net risk exposure resulting from such transactions. Fair Values of Derivative Instruments on the Consolidated Balance Sheets The Company’s derivative asset and derivative liability are located within Other assets and Other liabilities, respectively, on the Company’s Consolidated Balance Sheets. This table provides a summary of the fair value of the Company’s derivative assets and liabilities as of June 30, 2015 and December 31, 2014 (in thousands): Asset Derivatives Liability Derivatives Fair Value June 30, 2015 December 31, June 30, 2015 December 31, Interest Rate Products: $ 6,437 $ 7,138 $ 6,635 $ 7,250 Derivatives not designated as hedging instruments Derivatives designated as hedging instruments 757 — 240 285 Total $ 7,194 $ 7,138 $ 6,875 $ 7,535 Fair Value Hedges of Interest Rate Risk The Company is exposed to changes in the fair value of certain of its fixed rate assets and liabilities due to changes in the benchmark interest rate, LIBOR. Interest rate swaps designated as fair value hedges involve either making fixed rate payments to a counterparty in exchange for the Company receiving variable rate payments, or making variable rate payments to a counterparty in exchange for the Company receiving fixed rate payments, over the life of the agreements without the exchange of the underlying notional amount. As of June 30, 2015, the Company had two interest rate swaps with a notional amount of $16.2 million that were designated as fair value hedges of interest rate risk associated with the Company’s fixed rate loan assets and brokered time deposits. For derivatives designated and that qualify as fair value hedges, the gain or loss on the derivative as well as the offsetting loss or gain on the hedged item attributable to the hedged risk are recognized in earnings. The Company includes the gain or loss on the hedged items in the same line item as the offsetting loss or gain on the related derivatives. During the three and six months ended June 30, 2015, the Company recognized net gains of $7 thousand and $2 thousand, respectively, related to hedge ineffectiveness. During the three and six months ended June 30, 2014, the Company recognized net losses of $8 thousand and $18 thousand, respectively, related to hedge ineffectiveness. Non-designated Hedges The remainder of the Company’s derivatives are not designated in qualifying hedging relationships. Derivatives not designated as hedges are not speculative and result from a service the Company provides to certain customers. The Company executes interest rate swaps with commercial banking customers to facilitate their respective risk management strategies. Those interest rate swaps are simultaneously offset by interest rate swaps that the Company executes with a third party, such that the Company minimizes its net risk exposure resulting from such transactions. As the interest rate swaps associated with this program do not meet the strict hedge accounting requirements, changes in the fair value of both the customer swaps and the offsetting swaps are recognized directly in earnings. As of June 30, 2015, the Company had 34 interest rate swaps with an aggregate notional amount of $391.9 million related to this program. During the three and six months ended June 30, 2015, the Company recognized $20 thousand of net gains and $86 thousand of net losses, respectively, related to changes in fair value of these swaps. During the three and six months ended June 30, 2014, the Company recognized $31 thousand of net gains and $52 thousand of net losses, respectively, related to changes in the fair value of these swaps. Effect of Derivative Instruments on the Consolidated Statements of Income This table provides a summary of the amount of gain (loss) recognized in other noninterest expense in the Consolidated Statements of Income related to the Company’s derivative asset and liability for the three and six months ended June 30, 2015 and June 30, 2014 (in thousands): Amount of Gain (Loss) Recognized For the Three Months Ended For the Six Months Ended June 30, 2015 June 30, 2014 June 30, 2015 June 30, 2014 Interest Rate Products Derivatives not designated as hedging instruments $ 20 $ 31 $ (86 ) $ (52 ) Total $ 20 $ 31 $ (86 ) $ (52 ) Interest Rate Products Derivatives designated as hedging instruments Fair value adjustments on derivatives $ 121 $ (116 ) $ 6 $ (235 ) Fair value adjustments on hedged items (114 ) 108 (4 ) 217 Total $ 7 $ (8 ) $ 2 $ (18 ) Credit-risk-related Contingent Features The Company has agreements with certain of its derivative counterparties that contain a provision that if the Company defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then the Company could also be declared in default on its derivative obligations. As of June 30, 2015 the termination value of derivatives in a net liability position, which includes accrued interest, related to these agreements was $6.8 million. The Company has minimum collateral posting thresholds with certain of its derivative counterparties and has not yet reached its minimum collateral posting threshold under these agreements. If the Company had breached any of these provisions at June 30, 2015, it could have been required to settle its obligations under the agreements at the termination value.

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value Measurements	11. Fair Value Measurements The following table presents information about the Company’s assets measured at fair value on a recurring basis as of June 30, 2015, and indicates the fair value hierarchy of the valuation techniques utilized by the Company to determine such fair value. Fair values determined by Level 1 inputs utilize quoted prices in active markets for identical assets and liabilities that the Company has the ability to access. Fair values determined by Level 2 inputs utilize inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. Level 2 inputs include quoted prices for similar assets or liabilities in active markets, and inputs other than quoted prices that are observable for the asset or liability, such as interest rates and yield curves that are observable at commonly quoted intervals. Level 3 inputs are unobservable inputs for the asset or liability, and include situations where there is little, if any, market activity for the asset or liability. In certain cases, the inputs used to measure fair value may fall into different levels of the hierarchy. In such cases, the fair value is determined based on the lowest level input that is significant to the fair value measurement in its entirety. Assets measured at fair value on a recurring basis as of June 30, 2015 and December 31, 2014 (in thousands): Fair Value Measurement at June 30, 2015 Description June 30, 2015 Quoted (Level 1) Significant (Level 2) Significant (Level 3) Assets U.S. Treasury $ 3,455 $ 3,455 $ — $ — U.S. Agencies 3,524 — 3,524 — Mortgage-backed 5,464 — 5,464 — State and political subdivisions 5,386 — 5,386 — Trading - other 18,787 18,785 2 — Trading securities 36,616 22,240 14,376 — U.S. Treasury 353,915 353,915 — — U.S. Agencies 808,155 — 808,155 — Mortgage-backed 3,524,291 — 3,524,291 — State and political subdivisions 2,158,098 — 2,158,098 — Corporates 80,656 80,656 — — Available for sale securities 6,925,115 434,571 6,490,544 — Company-owned life insurance 27,488 — 27,488 — Derivatives 7,194 — 7,194 — Total $ 6,996,413 $ 456,811 $ 6,539,602 $ — Liabilities Deferred compensation $ 34,310 $ 34,310 $ — $ — Contingent consideration liability 31,291 — — 31,291 Derivatives 6,875 — 6,875 — Total $ 72,476 $ 34,310 $ 6,875 $ 31,291 Fair Value Measurement at December 31, 2014 Description December 31, Quoted Prices (Level 1) Significant (Level 2) Significant (Level 3) Assets U.S. Treasury $ 400 $ 400 $ — $ — U.S. Agencies 1,315 — 1,315 — Mortgage-backed — — — — State and political subdivisions 7,381 — 7,381 — Trading—other 18,107 18,106 1 — Trading securities 27,203 18,506 8,697 — U.S. Treasury 519,460 519,460 — — U.S. Agencies 990,689 — 990,689 — Mortgage-backed 3,277,604 — 3,277,604 — State and political subdivisions 2,001,357 — 2,001,357 — Corporates 122,826 122,826 — — Available for sale securities 6,911,936 642,286 6,269,650 — Company-owned life insurance 26,886 — 26,886 — Derivatives 7,138 — 7,138 — Total $ 6,973,163 $ 660,792 $ 6,312,371 $ — Liabilities Deferred compensation $ 26,885 $ 26,885 $ — $ — Contingent consideration liability 53,411 — — 53,411 Derivatives 7,535 — 7,535 — Total $ 87,831 $ 26,885 $ 7,535 $ 53,411 The following table reconciles the beginning and ending balances of the contingent consideration liability for the six months ended June 30, 2015 and 2014 ( in thousands Six Months Ended June 30, 2015 2014 Beginning balance $ 53,411 $ 46,201 Payment of contingent considerations on acquisitions (18,702 ) (13,725 ) Contingency reserve — 14,272 Fair value adjustments (3,418 ) 5,279 Ending balance $ 31,291 $ 52,027 During the six month period ended June 30, 2014, the Company recorded contingency reserve expense of $20.3 million in its Consolidated Statements of Income related to the resolution of the PCM dispute. On June 30, 2014, the Company made a payment of $6.0 million, reducing the remaining contingency reserve to $14.3 million. The settlement agreement amends the original asset purchase agreement dated June 27, 2010, and subsequent to the settlement, the remaining contingency reserve liability has been included in the table above as additional contingent consideration recorded at fair value. Fair value adjustments made subsequent to settlement are included in the table above as expense from fair value adjustments. The following table presents certain quantitative information about the significant unobservable input used in the fair value measurement for the contingent consideration liability measured at fair value on a recurring basis using significant unobservable inputs (Level 3): Description Valuation Techniques Significant Unobservable Inputs Range Liabilities Contingent consideration liability Discounted cash flows Revenue and expense growth percentage (1%) - 102% An increase in the revenue growth percentage may result in a significantly higher estimated fair value of the contingent consideration liability. Alternatively, a decrease in the revenue growth percentage may result in a significantly lower estimated fair value of the contingent consideration liability. Valuation methods for instruments measured at fair value on a recurring basis The following methods and assumptions were used to estimate the fair value of each class of financial instruments measured on a recurring basis: Securities Available for Sale and Investment Securities Trading Securities Company-owned Life Insurance Derivatives Deferred Compensation Contingent Consideration Liability Assets measured at fair value on a non-recurring basis as of June 30, 2015 and December 31, 2014 (in thousands): Fair Value Measurement at June 30, 2015 Using Description June 30, 2015 Quoted Prices (Level 1) Significant (Level 2) Significant (Level 3) Total Gains (Losses) Recognized During the Six Impaired loans $ 12,032 $ — $ — $ 12,032 $ 346 Other real estate owned 2,495 — — 2,495 (18 ) Total $ 14,527 $ — $ — $ 14,527 $ 328 Fair Value Measurement at December 31, 2014 Using Description December 31, Quoted Prices (Level 1) Significant (Level 2) Significant (Level 3) Total Gains (Losses) Recognized During the Impaired loans $ 5,122 $ — $ — $ 5,122 $ 2,345 Other real estate owned 208 — — 208 — Total $ 5,330 $ — $ — $ 5,330 $ 2,345 Valuation methods for instruments measured at fair value on a nonrecurring basis The following methods and assumptions were used to estimate the fair value of each class of financial instruments measured on a non-recurring basis: Impaired loans Other real estate owned Goodwill Fair value disclosures require disclosure of the fair value of financial assets and financial liabilities, including those financial assets and financial liabilities that are not measured and reported at fair value on a recurring basis or non-recurring basis. The estimated fair value of the Company’s financial instruments at June 30, 2015 and December 31, 2014 are as follows (in millions): Fair Value Measurement at June 30, 2015 Using Carrying Quoted Prices (Level 1) Significant (Level 2) Significant (Level 3) Total FINANCIAL ASSETS Cash and short-term investments $ 1,280.4 $ 1,202.6 $ 77.8 $ — $ 1,280.4 Securities available for sale 6,925.1 434.6 6,490.5 — 6,925.1 Securities held to maturity 446.9 — 475.4 — 475.4 Other securities 77.8 — 77.8 — 77.8 Trading securities 36.6 22.2 14.4 — 36.6 Loans (exclusive of allowance for loan loss) 8,918.9 — 8,946.2 — 8,946.2 Derivatives 7.2 — 7.2 — 7.2 FINANCIAL LIABILITIES Demand and savings deposits 13,190.8 13,190.8 — — 13,190.8 Time deposits 1,305.8 — 1,305.8 — 1,305.8 Other borrowings 1,774.4 41.4 1,733.0 — 1,774.4 Long-term debt 88.3 — 90.3 — 90.3 Derivatives 6.9 — 6.9 — 6.9 OFF-BALANCE SHEET ARRANGEMENTS Commitments to extend credit for loans 2.3 Commercial letters of credit 0.1 Standby letters of credit 1.2 Fair Value Measurement at December 31, 2014 Using Carrying Quoted Prices (Level 1) Significant (Level 2) Significant (Level 3) Total FINANCIAL ASSETS Cash and short-term investments $ 2,101.8 $ 2,006.3 $ 95.5 $ — $ 2,101.8 Securities available for sale 6,911.9 642.3 6,269.6 — 6,911.9 Securities held to maturity 278.1 — 304.1 — 304.1 Other securities 68.5 — 68.5 — 68.5 Trading securities 27.2 18.5 8.7 — 27.2 Loans (exclusive of allowance for loan loss) 7,466.4 — 7,483.3 — 7,483.3 Derivatives 7.1 — 7.1 — 7.1 FINANCIAL LIABILITIES Demand and savings deposits 12,353.3 12,353.3 — — 12,353.3 Time deposits 1,263.6 — 1,263.6 — 1,263.6 Other borrowings 2,025.1 42.0 1,983.1 — 2,025.1 Long-term debt 8.8 — 9.1 — 9.1 Derivatives 7.5 — 7.5 — 7.5 OFF-BALANCE SHEET ARRANGEMENTS Commitments to extend credit for loans 5.7 Commercial letters of credit 0.2 Standby letters of credit 2.4 Cash and short-term investments Securities held to maturity Other securities Loans Demand and savings deposits Time deposits Other borrowings Long-term debt Other off-balance sheet instruments

Summary of Significant Accoun20

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Nature of Operations	The Company is a financial holding company, which offers a wide range of banking and other financial services to its customers through its branches and offices in the states of Missouri, Kansas, Colorado, Illinois, Oklahoma, Texas, Arizona, Nebraska, Pennsylvania, South Dakota, Indiana, Utah, Minnesota, and Wisconsin. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements. These estimates and assumptions also impact reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. A summary of the significant accounting policies to assist the reader in understanding the financial presentation is provided in the Notes to Consolidated Financial Statements in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2014.
Cash and cash equivalents	Cash and cash equivalents Cash and cash equivalents include Cash and due from banks and amounts due from the Federal Reserve Bank. Cash on hand, cash items in the process of collection, and amounts due from correspondent banks are included in Cash and due from banks. Amounts due from the Federal Reserve Bank are interest-bearing for all periods presented and are included in the Interest-bearing due from banks line on the Company’s Consolidated Balance Sheets. This table provides a summary of cash and cash equivalents as presented on the Consolidated Statements of Cash Flows as of June 30, 2015 and June 30, 2014 (in thousands) June 30, 2015 2014 Due from the Federal Reserve $ 521,685 $ 143,641 Cash and due from banks 490,171 639,878 Cash and cash equivalents at end of period $ 1,011,856 $ 783,519 Also included in the Interest-bearing due from banks line, but not considered cash and cash equivalents, are interest-bearing accounts held at other financial institutions, which totaled $177.3 million and $111.8 million at June 30, 2015 and June 30, 2014, respectively.
Per Share Data	Per Share Data Basic income per share is computed based on the weighted average number of shares of common stock outstanding during each period. Diluted quarterly per share data includes the dilutive effect of 370,227 and 597,778 shares issuable upon the exercise of options granted by the Company and outstanding at June 30, 2015 and 2014, respectively. Diluted year-to-date income per share includes the dilutive effect of 405,702 and 626,345 shares issuable upon the exercise of stock options granted by the Company and outstanding at June 30, 2015 and 2014, respectively. Options issued under employee benefits plans to purchase 495,366 shares of common stock were outstanding at June 30, 2015, but were not included in the computation of quarter-to-date and year-to-date diluted EPS because the options were anti-dilutive. Options issued under employee benefits plans to purchase 253,149 shares of common stock were outstanding at June 30, 2014, but were not included in the computation of quarter-to-date and year-to-date diluted EPS because the options were anti-dilutive.

Summary of Significant Accoun21

Summary of Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Summary of Cash and Cash Equivalents	This table provides a summary of cash and cash equivalents as presented on the Consolidated Statements of Cash Flows as of June 30, 2015 and June 30, 2014 (in thousands) June 30, 2015 2014 Due from the Federal Reserve $ 521,685 $ 143,641 Cash and due from banks 490,171 639,878 Cash and cash equivalents at end of period $ 1,011,856 $ 783,519

Loans and Allowance for Loan 22

Loans and Allowance for Loan Losses (Tables)	6 Months Ended
	Jun. 30, 2015
Receivables [Abstract]
Schedule of PCI Loan Portfolio	Information about the PCI loan portfolio subject to purchased credit impairment accounting guidance (ASC 310-30) as of May 31, 2015 is as follows (in thousands): PCI Loans: At May 31, 2015 Contractually required principal and interest at acquisition $ 9,282 Non-accretable difference (1,307 ) Expected cash flows at acquisition 7,975 Accretable yield (164 ) Fair value of purchased loans $ 7,811
Schedule of Net Book Value for PCI Loans Accounted Under ASC 310-30	Below is the composition of the net book value for the PCI loans accounted for under ASC 310-30 at June 30, 2015 (in thousands) PCI Loans: June 30, 2015 Contractual cash flows $ 9,101 Non-accretable difference (1,307 ) Accretable yield (102 ) Loans accounted for under ASC 310-30 $ 7,692
Summary of Loan Classes and Aging of Past Due Loans	This table provides a summary of loan classes and an aging of past due loans at June 30, 2015 and December 31, 2014 (in thousands): June 30, 2015 30-89 Greater Non- Accrual Total PCI Current Total Loans Loans Commercial: Commercial $ 11,249 $ 629 $ 19,322 $ 31,200 $ 2,490 $ 4,098,881 $ 4,132,571 Asset-based — — — — — 211,302 211,302 Factoring 12,892 188 — 13,080 — 96,132 109,212 Commercial – credit card 285 94 25 404 — 126,122 126,526 Real estate: Real estate – construction 1,719 — 813 2,532 532 392,784 395,848 Real estate – commercial 3,643 575 9,276 13,494 1,934 2,372,129 2,387,557 Real estate – residential 2,279 198 2,250 4,727 — 428,560 433,287 Real estate – HELOC 76 — 3,998 4,074 47 694,693 698,814 Consumer: Consumer – credit card 1,789 1,709 679 4,177 — 282,301 286,478 Consumer – other 2,627 4,252 1,286 8,165 2,689 83,606 94,460 Leases — — — — — 40,073 40,073 Total loans $ 36,559 $ 7,645 $ 37,649 $ 81,853 $ 7,692 $ 8,826,583 $ 8,916,128 June 30, 2015 30-89 Greater Current Total Loans PCI Loans Commercial: Commercial $ — $ 2,490 $ — $ 2,490 Asset-based — — — — Factoring — — — — Commercial – credit card — — — — Real estate: Real estate – construction — 532 — 532 Real estate – commercial — 1,934 — 1,934 Real estate – residential — — — — Real estate – HELOC — 47 — 47 Consumer: Consumer – credit card — — — — Consumer – other 171 20 2,498 2,689 Leases — — — — Total PCI loans $ 171 $ 5,023 $ 2,498 $ 7,692 December 31, 2014 30-89 Greater Non-Accrual Total Current Total Loans Commercial: Commercial $ 2,509 $ 363 $ 13,114 $ 15,986 $ 3,798,023 $ 3,814,009 Commercial – credit card 267 147 37 451 115,258 115,709 Real estate: Real estate – construction 1,244 — 983 2,227 253,779 256,006 Real estate – commercial 1,727 61 12,037 13,825 1,852,476 1,866,301 Real estate – residential 828 113 562 1,503 318,324 319,827 Real estate – HELOC 1,371 — 19 1,390 642,196 643,586 Consumer: Consumer – credit card 2,268 2,303 560 5,131 305,165 310,296 Consumer – other 1,743 843 70 2,656 98,314 100,970 Leases — — — — 39,090 39,090 Total loans $ 11,957 $ 3,830 $ 27,382 $ 43,169 $ 7,422,625 $ 7,465,794
Credit Risk Profile by Risk Rating	Credit Exposure Credit Risk Profile by Risk Rating Originated and Non-PCI Loans Commercial Asset-based Factoring June 30, 2015 December 31, June 30, 2015 December 31, June 30, 2015 December 31, Non-watch list $ 3,863,331 $ 3,532,611 $ 168,138 $ — $ 105,116 $ — Watch 55,914 72,283 — — — — Special Mention 82,110 98,750 40,740 — — — Substandard 128,726 110,365 2,424 — 4,096 — Total $ 4,130,081 $ 3,814,009 $ 211,302 $ — $ 109,212 $ — Real estate-construction Real estate-commercial June 30, 2015 December 31, June 30, 2015 December 31, Non-watch list $ 392,754 $ 253,895 $ 2,297,846 $ 1,780,323 Watch 716 181 38,451 31,984 Special Mention — 756 17,597 8,691 Substandard 1,846 1,174 31,729 45,303 Total $ 395,316 $ 256,006 $ 2,385,623 $ 1,866,301 Credit Exposure Credit Risk Profile by Risk Rating PCI Loans Commercial Real estate-construction Real estate-commercial June 30, 2015 December 31, June 30, 2015 December 31, June 30, 2015 December 31, Non-watch list $ 1,039 $ — $ — $ — $ — $ — Watch — — — — — — Special Mention — — — — — — Substandard 1,451 — 532 — 1,934 — Total $ 2,490 $ — $ 532 $ — $ 1,934 $ —
Credit Risk Profile Based on Payment Activity	Credit Exposure Credit Risk Profile Based on Payment Activity Originated and Non-PCI Loans Commercial-credit card Real estate-residential Real estate-HELOC June 30, 2015 December 31, June 30, 2015 December 31, June 30, 2015 December 31, Performing $ 126,501 $ 115,672 $ 431,037 $ 319,265 $ 694,769 $ 643,567 Non-performing 25 37 2,250 562 3,998 19 Total $ 126,526 $ 115,709 $ 433,287 $ 319,827 $ 698,767 $ 643,586 Consumer-credit card Consumer-other Leases June 30, 2015 December 31, June 30, 2015 December 31, June 30, 2015 December 31, Performing $ 285,799 $ 309,736 $ 90,485 $ 100,900 $ 40,073 $ 39,090 Non-performing 679 560 1,286 70 — — Total $ 286,478 $ 310,296 $ 91,771 $ 100,970 $ 40,073 $ 39,090 Credit Exposure Credit Risk Profile Based on Payment Activity PCI Loans Real estate-HELOC Consumer-other June 30, 2015 December 31, June 30, 2015 December 31, Performing $ 47 $ — $ 2,689 $ — Non-performing — — — — Total $ 47 $ — $ 2,689 $ —
Rollforward of Allowance for Loan Losses by Portfolio Segment	This table provides a rollforward of the allowance for loan losses by portfolio segment for the three and six months ended June 30, 2015 (in thousands): Three Months Ended June 30, 2015 Commercial Real estate Consumer Leases Total Allowance for loan losses: Beginning balance $ 55,659 $ 11,912 $ 9,780 $ 128 $ 77,479 Charge-offs (3,088 ) (68 ) (2,446 ) — (5,602 ) Recoveries 89 77 678 — 844 Provision 6,718 (3,029 ) 1,276 35 5,000 Ending balance $ 59,378 $ 8,892 $ 9,288 $ 163 $ 77,721 Six Months Ended June 30, 2015 Commercial Real estate Consumer Leases Total Allowance for loan losses: Beginning balance $ 55,349 $ 10,725 $ 9,921 $ 145 $ 76,140 Charge-offs (3,500 ) (100 ) (5,150 ) — (8,750 ) Recoveries 899 92 1,340 — 2,331 Provision 6,630 (1,825 ) 3,177 18 8,000 Ending balance $ 59,378 $ 8,892 $ 9,288 $ 163 $ 77,721 Ending balance: individually evaluated for impairment $ 1,266 $ 295 $ — $ — $ 1,561 Ending balance: collectively evaluated for impairment 58,112 8,597 9,288 163 76,160 Loans: Ending balance: loans $ 4,579,611 $ 3,915,506 $ 380,938 $ 40,073 $ 8,916,128 Ending balance: individually evaluated for impairment 32,818 9,113 1,240 — 43,171 Ending balance: collectively evaluated for impairment 4,546,793 3,906,393 379,698 40,073 8,872,957 This table provides a rollforward of the allowance for loan losses by portfolio segment for the three and six months ended June 30, 2014 (in thousands): Three Months Ended June 30, 2014 Commercial Real estate Consumer Leases Total Allowance for loan losses: Beginning balance $ 48,363 $ 16,091 $ 10,984 $ 76 $ 75,514 Charge-offs (1,476 ) (55 ) (3,048 ) — (4,579 ) Recoveries 201 8 658 — 867 Provision 5,345 (1,827 ) 1,480 2 5,000 Ending balance $ 52,433 $ 14,217 $ 10,074 $ 78 $ 76,802 Six Months Ended June 30, 2014 Commercial Real estate Consumer Leases Total Allowance for loan losses: Beginning balance $ 48,886 $ 15,342 $ 10,447 $ 76 $ 74,751 Charge-offs (2,947 ) (181 ) (6,136 ) — (9,264 ) Recoveries 268 17 1,530 — 1,815 Provision 6,226 (961 ) 4,233 2 9,500 Ending balance $ 52,433 $ 14,217 $ 10,074 $ 78 $ 76,802 Ending balance: individually evaluated for impairment $ 2,497 $ 1,118 $ — $ — $ 3,615 Ending balance: collectively evaluated for impairment 49,936 13,099 10,074 78 73,187 Loans: Ending balance: loans $ 3,658,124 $ 2,859,563 $ 379,203 $ 23,793 $ 6,920,683 Ending balance: individually evaluated for impairment 14,517 12,407 1 — 26,925 Ending balance: collectively evaluated for impairment 3,643,607 2,847,156 379,202 23,793 6,893,758
Analysis of Impaired Loans	This table provides an analysis of impaired loans by class at June 30, 2015 and December 31, 2014 (in thousands): As of June 30, 2015 Unpaid Recorded Recorded Total Related Average Recorded Commercial: Commercial $ 36,941 $ 20,925 $ 11,893 $ 32,818 $ 1,266 $ 21,239 Asset-based — — — — — — Factoring — — — — — — Commercial – credit card — — — — — — Real estate: Real estate – construction 1,453 813 121 934 59 960 Real estate – commercial 6,254 3,960 1,579 5,539 236 8,930 Real estate – residential 2,544 2,410 — 2,410 — 1,433 Real estate – HELOC 255 230 — 230 — 77 Consumer: Consumer – credit card — — — — — — Consumer – other 1,240 1,240 — 1,240 — 414 Leases — — — — — — Total $ 48,687 $ 29,578 $ 13,593 $ 43,171 $ 1,561 $ 33,053 As of December 31, 2014 Unpaid Recorded Recorded Total Related Average Recorded Commercial: Commercial $ 21,758 $ 13,928 $ 3,132 $ 17,060 $ 972 $ 16,022 Commercial – credit card — — — — — — Real estate: Real estate – construction 1,540 983 — 983 — 939 Real estate – commercial 9,546 4,454 3,897 8,351 935 11,298 Real estate – residential 1,083 909 — 909 — 1,006 Real estate – HELOC — — — — — — Consumer: Consumer – credit card — — — — — — Consumer – other 1 1 — 1 — 12 Leases — — — — — — Total $ 33,928 $ 20,275 $ 7,029 $ 27,304 $ 1,907 $ 29,277
Summary of Loans Restructured by Class	This table provides a summary of loans restructured by class during the three and six months ended June 30, 2015 (in thousands): Three Months Ended June 30, 2015 Six Months Ended June 30, 2015 Number Pre- Modification Post- Number Pre- Modification Post- Troubled Debt Restructurings Commercial: Commercial 14 $ 19,463 $ 19,463 14 $ 19,463 $ 19,463 Asset-based — — — — — — Factoring — — — — — — Commercial – credit card — — — — — — Real estate: Real estate – construction — — — — — — Real estate – commercial — — — — — — Real estate – residential 1 121 121 1 121 121 Real estate – HELOC — — — — — — Consumer: Consumer – credit card — — — — — — Consumer – other — — — — — — Leases — — — — — — Total 15 $ 19,584 $ 19,584 15 $ 19,584 $ 19,584 This table provides a summary of loans restructured by class during the three and six months ended June 30, 2014 (in thousands): Three Months Ended June 30, 2014 Six Months Ended June 30, 2014 Number Pre- Modification Post- Number Pre- Modification Post- Troubled Debt Restructurings Commercial: Commercial — $ — $ — 1 $ 469 $ 469 Commercial – credit card — — — — — — Real estate: Real estate – construction — — — — — — Real estate – commercial — — — — — — Real estate – residential 3 210 234 3 210 234 Real estate – HELOC — — — — — — Consumer: Consumer – credit card — — — — — — Consumer – other — — — — — — Leases — — — — — — Total 3 $ 210 $ 234 4 $ 679 $ 703

Securities (Tables)

Securities (Tables)	6 Months Ended
	Jun. 30, 2015
Securities Available for Sale	This table provides detailed information about securities available for sale at June 30, 2015 and December 31, 2014 (in thousands): Gross Gross Amortized Unrealized Unrealized Fair Cost Gains Losses Value June 30, 2015 U.S. Treasury $ 353,174 $ 747 $ (6 ) $ 353,915 U.S. Agencies 807,484 1,162 (491 ) 808,155 Mortgage-backed 3,535,277 20,064 (31,050 ) 3,524,291 State and political subdivisions 2,151,526 18,032 (11,460 ) 2,158,098 Corporates 81,122 27 (493 ) 80,656 Total $ 6,928,583 $ 40,032 $ (43,500 ) $ 6,925,115 Gross Gross Amortized Unrealized Unrealized Fair Cost Gains Losses Value December 31, 2014 U.S. Treasury $ 519,484 $ 501 $ (525 ) $ 519,460 U.S. Agencies 991,084 780 (1,175 ) 990,689 Mortgage-backed 3,276,009 28,470 (26,875 ) 3,277,604 State and political subdivisions 1,983,549 22,973 (5,165 ) 2,001,357 Corporates 124,096 — (1,270 ) 122,826 Total $ 6,894,222 $ 52,724 $ (35,010 ) $ 6,911,936
Gross Unrealized Losses and Fair Value of Investment Securities Available for Sale	The following table shows the Company’s available for sale investments’ gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at June 30, 2015 and December 31, 2014 (in thousands): Less than 12 months 12 months or more Total June 30, 2015 Fair Value Unrealized Fair Value Unrealized Fair Value Unrealized Description of Securities U.S. Treasury $ 9,965 $ (6 ) $ — $ — $ 9,965 $ (6 ) U.S. Agencies 104,031 (176 ) 64,711 (315 ) 168,742 (491 ) Mortgage-backed 1,503,100 (16,552 ) 399,744 (14,498 ) 1,902,844 (31,050 ) State and political subdivisions 875,725 (9,166 ) 73,175 (2,294 ) 948,900 (11,460 ) Corporates 17,831 (73 ) 51,045 (420 ) 68,876 (493 ) Total temporarily- impaired debt securities available for sale $ 2,510,652 $ (25,973 ) $ 588,675 $ (17,527 ) $ 3,099,327 $ (43,500 ) December 31, 2014 Less than 12 months 12 months or more Total Fair Value Unrealized Fair Value Unrealized Fair Value Unrealized Description of Securities U.S. Treasury $ 236,591 $ (329 ) $ 14,863 $ (196 ) $ 251,454 $ (525 ) U.S. Agencies 387,999 (689 ) 81,593 (486 ) 469,592 (1,175 ) Mortgage-backed 727,142 (8,370 ) 616,044 (18,504 ) 1,343,186 (26,874 ) State and political subdivisions 401,934 (1,406 ) 226,678 (3,760 ) 628,612 (5,166 ) Corporates 36,655 (243 ) 86,171 (1,027 ) 122,826 (1,270 ) Total temporarily- impaired debt securities available for sale $ 1,790,321 $ (11,037 ) $ 1,025,349 $ (23,973 ) $ 2,815,670 $ (35,010 )
Securities Held to Maturity	The table below provides detailed information for securities held to maturity at June 30, 2015 and December 31, 2014 (in thousands): Gross Gross Amortized Unrealized Unrealized Fair Cost Gains Losses Value June 30, 2015 State and political subdivisions $ 446,881 $ 28,510 $ — $ 475,391 December 31, 2014 State and political subdivisions $ 278,054 $ 26,058 $ — $ 304,112
Schedule of Federal Reserve Bank Stock and Other Securities	The table below provides detailed information for Federal Reserve Bank stock and other securities at June 30, 2015 and December 31, 2014 (in thousands): Gross Gross Amortized Unrealized Unrealized Fair Cost Gains Losses Value June 30, 2015 FRB and FHLB stock $ 37,300 $ — $ — $ 37,300 Other securities – marketable — 17,031 — 17,031 Other securities – non-marketable 21,939 1,609 (79 ) 23,469 Total Federal Reserve Bank stock and other $ 59,239 $ 18,640 $ (79 ) $ 77,800 December 31, 2014 FRB and FHLB stock $ 26,279 $ — $ — $ 26,279 Other securities – marketable — 16,668 — 16,668 Other securities – non-marketable 21,669 3,937 (79 ) 25,527 Total Federal Reserve Bank stock and other $ 47,948 $ 20,605 $ (79 ) $ 68,474
Available-for-sale Securities [Member]
Contractual Maturity Information	The following table presents contractual maturity information for securities available for sale at June 30, 2015 (in thousands): Amortized Fair Cost Value Due in 1 year or less $ 638,122 $ 639,044 Due after 1 year through 5 years 1,811,855 1,821,535 Due after 5 years through 10 years 863,778 862,706 Due after 10 years 79,551 77,539 Total 3,393,306 3,400,824 Mortgage-backed securities 3,535,277 3,524,291 Total securities available for sale $ 6,928,583 $ 6,925,115
Held-to-maturity Securities [Member]
Contractual Maturity Information	The following table presents contractual maturity information for securities held to maturity at June 30, 2015 (in thousands): Amortized Fair Cost Value Due in 1 year or less $ 2,157 $ 2,295 Due after 1 year through 5 years 74,653 79,416 Due after 5 years through 10 years 284,028 302,148 Due after 10 years 86,043 91,532 Total securities held to maturity $ 446,881 $ 475,391

Goodwill and Other Intangibles

Goodwill and Other Intangibles (Tables)	6 Months Ended
	Jun. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in Carrying Amount of Goodwill	Changes in the carrying amount of goodwill for the periods ended June 30, 2015 and December 31, 2014 by reportable segment are as follows (in thousands): Bank Institutional Asset Total Balances as of January 1, 2015 $ 142,753 $ 47,529 $ 19,476 $ 209,758 Acquisition of Marquette Financial Companies 18,459 — — 18,459 Balances as of June 30, 2015 $ 161,212 $ 47,529 $ 19,476 $ 228,217 Balances as of January 1, 2014 $ 142,753 $ 47,529 $ 19,476 $ 209,758 Balances as of December 31, 2014 $ 142,753 $ 47,529 $ 19,476 $ 209,758
Changes in Intangible Assets	Following are the finite-lived intangible assets that continue to be subject to amortization as of June 30, 2015 and December 31, 2014 (in thousands): As of June 30, 2015 Gross Carrying Accumulated Net Core deposit intangible assets $ 36,497 $ 33,186 $ 3,311 Core deposit – Marquette Acquisition 10,931 153 10,778 Customer relationships 104,560 69,503 35,057 Customer Relationships – Marquette Acquisition 3,100 29 3,071 Other intangible assets 3,247 2,726 521 Other intangible assets – Marquette Acquisition 951 40 911 Total intangible assets $ 159,286 $ 105,637 $ 53,649 As of December 31, 2014 Gross Carrying Accumulated Net Core deposit intangible assets $ 36,497 $ 32,721 $ 3,776 Customer relationships 104,560 64,980 39,580 Other intangible assets 3,247 2,612 635 Total intangible assets $ 144,304 $ 100,313 $ 43,991
Aggregate Amortization Expense Recognized	Following is the aggregate amortization expense recognized in each period (in thousands) Three Months Ended June 30, Six Months Ended June 30, 2015 2014 2015 2014 Aggregate amortization expense $ 2,569 $ 3,074 $ 5,324 $ 6,176
Estimated Amortization Expense of Intangible Assets	Estimated amortization expense of intangible assets on future years (in thousands): For the six months ending December 31, 2015 $ 5,854 For the year ending December 31, 2016 11,069 For the year ending December 31, 2017 9,549 For the year ending December 31, 2018 7,160 For the year ending December 31, 2019 6,370 For the year ending December 31, 2020 5,624

Business Segment Reporting (Tab

Business Segment Reporting (Tables)	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Line of Business Segment Financial Results	Segment financial results were as follows ( in thousands Three Months Ended June 30, 2015 Bank Payment Institutional Asset Total Net interest income $ 82,758 $ 13,599 $ — $ 1,003 $ 97,360 Provision for loan losses 2,612 2,388 — — 5,000 Noninterest income 47,548 23,293 25,684 23,025 119,550 Noninterest expense 107,293 26,399 18,285 19,987 171,964 Income before taxes 20,401 8,105 7,399 4,041 39,946 Income tax expense 4,915 2,046 1,785 986 9,732 Net income $ 15,486 $ 6,059 $ 5,614 $ 3,055 $ 30,214 Average assets $ 13,423,000 $ 2,980,000 $ 70,000 $ 940,000 $ 17,413,000 Three Months Ended June 30, 2014 Bank Payment Institutional Asset Total Net interest income $ 72,481 $ 12,390 $ (1 ) $ 1,300 $ 86,170 Provision for loan losses 2,686 2,314 — — 5,000 Noninterest income 56,024 21,201 33,999 22,777 134,001 Noninterest expense 100,788 24,506 22,053 18,854 166,201 Income before taxes 25,031 6,771 11,945 5,223 48,970 Income tax expense 7,482 1,931 3,389 1,496 14,298 Net income $ 17,549 $ 4,840 $ 8,556 $ 3,727 $ 34,672 Average assets $ 12,008,000 $ 2,148,000 $ 69,000 $ 1,393,000 $ 15,618,000 Six Months Ended June 30, 2015 Bank Payment Solutions Institutional Asset Total Net interest income $ 158,085 $ 27,632 $ 1 $ 2,000 $ 187,718 Provision for loan losses 4,211 3,789 — — 8,000 Noninterest income 99,099 46,432 52,768 46,458 244,757 Noninterest expense 207,861 51,062 36,227 41,227 336,377 Income before taxes 45,112 19,213 16,542 7,231 88,098 Income tax expense 12,313 5,373 4,511 1,922 24,119 Net income $ 32,799 $ 13,840 $ 12,031 $ 5,309 $ 63,979 Average assets $ 13,089,000 $ 3,031,000 $ 72,000 $ 932,000 $ 17,124,000 Six Months Ended June 30, 2014 Bank Payment Institutional Asset Total Net interest income $ 143,602 $ 24,778 $ (3 ) $ 3,238 $ 171,615 Provision for loan losses 5,112 4,388 — — 9,500 Noninterest income 103,458 41,420 68,094 43,993 256,965 Noninterest expense 208,337 45,453 47,943 36,399 338,132 Income before taxes 33,611 16,357 20,148 10,832 80,948 Income tax expense 9,801 4,524 5,532 3,006 22,863 Net income $ 23,810 $ 11,833 $ 14,616 $ 7,826 $ 58,085 Average assets $ 12,204,000 $ 2,023,000 $ 71,000 $ 1,767,000 $ 16,065,000

Acquisition (Tables)

Acquisition (Tables)	6 Months Ended
	Jun. 30, 2015
Business Combinations [Abstract]
Summary of Net Assets Acquired (at Fair Value) and Consideration Transferred	The following table summarizes the net assets acquired (at fair value) and consideration transferred for Marquette (in thousands, except for per share data): Assets Loans $ 980,250 Investment securities 177,803 Cash and due from banks 104,539 Premises and equipment, net 11,508 Identifiable intangible assets 14,982 Other assets 32,240 Total Assets Acquired $ 1,321,322 Liabilities Noninterest-bearing deposits $ 235,426 Interest-bearing deposits 708,629 Short-term debt 112,133 Long-term debt 89,971 Other liabilities 13,885 Total liabilities assumed $ 1,160,044 Net identifiable assets acquired $ 161,278 Preliminary goodwill 18,459 Net assets acquired $ 179,737 Consideration Company’s common shares issued 3,470 Purchase price per share of the Company’s common stock $ 51.79 Fair value of total consideration transferred $ 179,737

Commitments, Contingencies an27

Commitments, Contingencies and Guarantees (Tables)	6 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Notional Amount of Off-Balance Sheet Financial Instruments	The following table summarizes the Company’s off-balance sheet financial instruments. Contract or Notional Amount (in thousands): June 30, December 31, 2015 2014 Commitments to extend credit for loans (excluding credit card loans) $ 4,464,244 $ 3,509,841 Commitments to extend credit under credit card loans 2,851,533 2,690,752 Commercial letters of credit 6,403 1,334 Standby letters of credit 364,826 375,003 Futures contracts 5,200 — Forward foreign exchange contracts 90,584 144,950 Spot foreign exchange contracts 6,390 14,721

Derivatives and Hedging Activ28

Derivatives and Hedging Activities (Tables)	6 Months Ended
	Jun. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Summary of Fair Value of Derivative Assets and Liabilities	This table provides a summary of the fair value of the Company’s derivative assets and liabilities as of June 30, 2015 and December 31, 2014 (in thousands): Asset Derivatives Liability Derivatives Fair Value June 30, 2015 December 31, June 30, 2015 December 31, Interest Rate Products: $ 6,437 $ 7,138 $ 6,635 $ 7,250 Derivatives not designated as hedging instruments Derivatives designated as hedging instruments 757 — 240 285 Total $ 7,194 $ 7,138 $ 6,875 $ 7,535
Summary of Amount of Gain (Loss) Recognized in Other Non-Interest Expense in Consolidated Statements of Income Related to Derivative Asset and Liability	This table provides a summary of the amount of gain (loss) recognized in other noninterest expense in the Consolidated Statements of Income related to the Company’s derivative asset and liability for the three and six months ended June 30, 2015 and June 30, 2014 (in thousands): Amount of Gain (Loss) Recognized For the Three Months Ended For the Six Months Ended June 30, 2015 June 30, 2014 June 30, 2015 June 30, 2014 Interest Rate Products Derivatives not designated as hedging instruments $ 20 $ 31 $ (86 ) $ (52 ) Total $ 20 $ 31 $ (86 ) $ (52 ) Interest Rate Products Derivatives designated as hedging instruments Fair value adjustments on derivatives $ 121 $ (116 ) $ 6 $ (235 ) Fair value adjustments on hedged items (114 ) 108 (4 ) 217 Total $ 7 $ (8 ) $ 2 $ (18 )

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Assets Measured at Fair Value on Recurring Basis	Assets measured at fair value on a recurring basis as of June 30, 2015 and December 31, 2014 (in thousands): Fair Value Measurement at June 30, 2015 Description June 30, 2015 Quoted (Level 1) Significant (Level 2) Significant (Level 3) Assets U.S. Treasury $ 3,455 $ 3,455 $ — $ — U.S. Agencies 3,524 — 3,524 — Mortgage-backed 5,464 — 5,464 — State and political subdivisions 5,386 — 5,386 — Trading - other 18,787 18,785 2 — Trading securities 36,616 22,240 14,376 — U.S. Treasury 353,915 353,915 — — U.S. Agencies 808,155 — 808,155 — Mortgage-backed 3,524,291 — 3,524,291 — State and political subdivisions 2,158,098 — 2,158,098 — Corporates 80,656 80,656 — — Available for sale securities 6,925,115 434,571 6,490,544 — Company-owned life insurance 27,488 — 27,488 — Derivatives 7,194 — 7,194 — Total $ 6,996,413 $ 456,811 $ 6,539,602 $ — Liabilities Deferred compensation $ 34,310 $ 34,310 $ — $ — Contingent consideration liability 31,291 — — 31,291 Derivatives 6,875 — 6,875 — Total $ 72,476 $ 34,310 $ 6,875 $ 31,291 Fair Value Measurement at December 31, 2014 Description December 31, Quoted Prices (Level 1) Significant (Level 2) Significant (Level 3) Assets U.S. Treasury $ 400 $ 400 $ — $ — U.S. Agencies 1,315 — 1,315 — Mortgage-backed — — — — State and political subdivisions 7,381 — 7,381 — Trading—other 18,107 18,106 1 — Trading securities 27,203 18,506 8,697 — U.S. Treasury 519,460 519,460 — — U.S. Agencies 990,689 — 990,689 — Mortgage-backed 3,277,604 — 3,277,604 — State and political subdivisions 2,001,357 — 2,001,357 — Corporates 122,826 122,826 — — Available for sale securities 6,911,936 642,286 6,269,650 — Company-owned life insurance 26,886 — 26,886 — Derivatives 7,138 — 7,138 — Total $ 6,973,163 $ 660,792 $ 6,312,371 $ — Liabilities Deferred compensation $ 26,885 $ 26,885 $ — $ — Contingent consideration liability 53,411 — — 53,411 Derivatives 7,535 — 7,535 — Total $ 87,831 $ 26,885 $ 7,535 $ 53,411
Reconciliation of Beginning and Ending Balances of Contingent Consideration Liability	The following table reconciles the beginning and ending balances of the contingent consideration liability for the six months ended June 30, 2015 and 2014 ( in thousands Six Months Ended June 30, 2015 2014 Beginning balance $ 53,411 $ 46,201 Payment of contingent considerations on acquisitions (18,702 ) (13,725 ) Contingency reserve — 14,272 Fair value adjustments (3,418 ) 5,279 Ending balance $ 31,291 $ 52,027
Quantitative Information about Significant Unobservable Input used in Fair Value Measurement for Contingent Consideration Liability Measured at Fair Value on Recurring Basis	The following table presents certain quantitative information about the significant unobservable input used in the fair value measurement for the contingent consideration liability measured at fair value on a recurring basis using significant unobservable inputs (Level 3): Description Valuation Techniques Significant Unobservable Inputs Range Liabilities Contingent consideration liability Discounted cash flows Revenue and expense growth percentage (1%) - 102%
Assets Measured at Fair Value on Non-Recurring Basis	Assets measured at fair value on a non-recurring basis as of June 30, 2015 and December 31, 2014 (in thousands): Fair Value Measurement at June 30, 2015 Using Description June 30, 2015 Quoted Prices (Level 1) Significant (Level 2) Significant (Level 3) Total Gains (Losses) Recognized During the Six Impaired loans $ 12,032 $ — $ — $ 12,032 $ 346 Other real estate owned 2,495 — — 2,495 (18 ) Total $ 14,527 $ — $ — $ 14,527 $ 328 Fair Value Measurement at December 31, 2014 Using Description December 31, Quoted Prices (Level 1) Significant (Level 2) Significant (Level 3) Total Gains (Losses) Recognized During the Impaired loans $ 5,122 $ — $ — $ 5,122 $ 2,345 Other real estate owned 208 — — 208 — Total $ 5,330 $ — $ — $ 5,330 $ 2,345
Estimated Fair Value of Financial Instruments	The estimated fair value of the Company’s financial instruments at June 30, 2015 and December 31, 2014 are as follows (in millions): Fair Value Measurement at June 30, 2015 Using Carrying Quoted Prices (Level 1) Significant (Level 2) Significant (Level 3) Total FINANCIAL ASSETS Cash and short-term investments $ 1,280.4 $ 1,202.6 $ 77.8 $ — $ 1,280.4 Securities available for sale 6,925.1 434.6 6,490.5 — 6,925.1 Securities held to maturity 446.9 — 475.4 — 475.4 Other securities 77.8 — 77.8 — 77.8 Trading securities 36.6 22.2 14.4 — 36.6 Loans (exclusive of allowance for loan loss) 8,918.9 — 8,946.2 — 8,946.2 Derivatives 7.2 — 7.2 — 7.2 FINANCIAL LIABILITIES Demand and savings deposits 13,190.8 13,190.8 — — 13,190.8 Time deposits 1,305.8 — 1,305.8 — 1,305.8 Other borrowings 1,774.4 41.4 1,733.0 — 1,774.4 Long-term debt 88.3 — 90.3 — 90.3 Derivatives 6.9 — 6.9 — 6.9 OFF-BALANCE SHEET ARRANGEMENTS Commitments to extend credit for loans 2.3 Commercial letters of credit 0.1 Standby letters of credit 1.2 Fair Value Measurement at December 31, 2014 Using Carrying Quoted Prices (Level 1) Significant (Level 2) Significant (Level 3) Total FINANCIAL ASSETS Cash and short-term investments $ 2,101.8 $ 2,006.3 $ 95.5 $ — $ 2,101.8 Securities available for sale 6,911.9 642.3 6,269.6 — 6,911.9 Securities held to maturity 278.1 — 304.1 — 304.1 Other securities 68.5 — 68.5 — 68.5 Trading securities 27.2 18.5 8.7 — 27.2 Loans (exclusive of allowance for loan loss) 7,466.4 — 7,483.3 — 7,483.3 Derivatives 7.1 — 7.1 — 7.1 FINANCIAL LIABILITIES Demand and savings deposits 12,353.3 12,353.3 — — 12,353.3 Time deposits 1,263.6 — 1,263.6 — 1,263.6 Other borrowings 2,025.1 42.0 1,983.1 — 2,025.1 Long-term debt 8.8 — 9.1 — 9.1 Derivatives 7.5 — 7.5 — 7.5 OFF-BALANCE SHEET ARRANGEMENTS Commitments to extend credit for loans 5.7 Commercial letters of credit 0.2 Standby letters of credit 2.4

Summary of Cash and Cash Equiva

Summary of Cash and Cash Equivalents (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Due from the Federal Reserve	$ 521,685		$ 143,641
Cash and due from banks	490,171	$ 444,299	639,878
Cash and cash equivalents at end of period	$ 1,011,856	$ 1,787,230	$ 783,519	$ 2,582,428

Summary of Significant Accoun31

Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accounting Policies [Abstract]
Interest bearing amounts held at other financial institutions	$ 177.3	$ 111.8	$ 177.3	$ 111.8
Dilutive effect of common stock issuable upon exercise of options, shares	370,227	597,778	405,702	626,345
Anti-dilutive shares			495,366	253,149

Loans and Allowance for Loan 32

Loans and Allowance for Loan Losses - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	May. 31, 2015	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
Carrying amount of loans	$ 7,692,000
Non-accrual loans	37,649,000				$ 27,382,000
Loans modified as troubled debt restructurings	27,000,000				9,300,000
Loans 90 days past due and accruing	7,645,000				3,830,000
Proceeds from sales of loans held for sale	58,054,000	$ 31,038,000
Allowance for loan losses	77,721,000	$ 76,802,000		$ 77,479,000	$ 76,140,000	$ 75,514,000	$ 74,751,000
Commitments to lend to borrowers with loan modifications classified as TDR's	293,000
Default payment of troubled restructuring, commercial real estate loan	178,000
PCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans modified as troubled debt restructurings	0
Loans 90 days past due and accruing	5,023,000
Allowance for loan losses	0
Loans Accounted for under ASC 310-30 [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Carrying amount of loans	7,700,000
Outstanding balance of loans	9,100,000
Marquette [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans purchased at fair value			$ 980,300,000
Marquette [Member] | Non-PCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans purchased at fair value			972,500,000
Contractually required principal and interest at acquisition	983,900,000
Marquette [Member] | PCI loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans purchased at fair value			$ 7,800,000
Contractually required principal and interest at acquisition	$ 9,300,000
Revolving Commercial Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of days past due to consider loan as a loss and charged off	90 days
Closed-End Retail Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of days past due to consider loan as a loss and charged off	120 days
Open-End Retail Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Number of days past due to consider loan as a loss and charged off	180 days

Schedule of PCI Loan Portfolio

Schedule of PCI Loan Portfolio (Detail) - Loans Accounted for under ASC 310-30 [Member] - Marquette [Member] - USD ($) $ in Thousands	Jun. 30, 2015	May. 31, 2015
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Contractually required principal and interest at acquisition		$ 9,282
Non-accretable difference	$ (1,307)	(1,307)
Expected cash flows at acquisition		7,975
Accretable yield	$ (102)	(164)
Fair value of purchased loans		$ 7,811

Schedule of Net Book Value for

Schedule of Net Book Value for PCI Loans Accounted Under ASC 310-30 (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	May. 31, 2015
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Loans accounted for under ASC 310-30	$ 7,692
Loans Accounted for under ASC 310-30 [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Contractual cash flows	9,100
Loans accounted for under ASC 310-30	7,700
Marquette [Member] | Loans Accounted for under ASC 310-30 [Member]
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Contractual cash flows	9,101
Non-accretable difference	(1,307)	$ (1,307)
Accretable yield	(102)	$ (164)
Loans accounted for under ASC 310-30	$ 7,692

Summary of Loan Classes and Agi

Summary of Loan Classes and Aging of Past Due Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	$ 36,559	$ 11,957
Greater than 90 Days Past Due	7,645	3,830
Non- Accrual Loans	37,649	27,382
Total Past Due	81,853	43,169
PCI Loans	7,692
Current	8,826,583	7,422,625
Total Loans	8,916,128	7,465,794	$ 6,920,683
PCI loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	171
Greater than 90 Days Past Due	5,023
Current	2,498
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	11,249	2,509
Greater than 90 Days Past Due	629	363
Non- Accrual Loans	19,322	13,114
Total Past Due	31,200	15,986
PCI Loans	2,490
Current	4,098,881	3,798,023
Total Loans	4,132,571	3,814,009
Commercial [Member] | PCI loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due	2,490
Commercial - credit card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	285	267
Greater than 90 Days Past Due	94	147
Non- Accrual Loans	25	37
Total Past Due	404	451
Current	126,122	115,258
Total Loans	126,526	115,709
Real estate - construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	1,719	1,244
Non- Accrual Loans	813	983
Total Past Due	2,532	2,227
PCI Loans	532
Current	392,784	253,779
Total Loans	395,848	256,006
Real estate - construction [Member] | PCI loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due	532
Real estate - commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	3,643	1,727
Greater than 90 Days Past Due	575	61
Non- Accrual Loans	9,276	12,037
Total Past Due	13,494	13,825
PCI Loans	1,934
Current	2,372,129	1,852,476
Total Loans	2,387,557	1,866,301
Real estate - commercial [Member] | PCI loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due	1,934
Real estate - residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	2,279	828
Greater than 90 Days Past Due	198	113
Non- Accrual Loans	2,250	562
Total Past Due	4,727	1,503
Current	428,560	318,324
Total Loans	433,287	319,827
Real estate - HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	76	1,371
Non- Accrual Loans	3,998	19
Total Past Due	4,074	1,390
PCI Loans	47
Current	694,693	642,196
Total Loans	698,814	643,586
Real estate - HELOC [Member] | PCI loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Greater than 90 Days Past Due	47
Consumer - credit card [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	1,789	2,268
Greater than 90 Days Past Due	1,709	2,303
Non- Accrual Loans	679	560
Total Past Due	4,177	5,131
Current	282,301	305,165
Total Loans	286,478	310,296
Consumer - other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	2,627	1,743
Greater than 90 Days Past Due	4,252	843
Non- Accrual Loans	1,286	70
Total Past Due	8,165	2,656
PCI Loans	2,689
Current	83,606	98,314
Total Loans	94,460	100,970
Consumer - other [Member] | PCI loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	171
Greater than 90 Days Past Due	20
Current	2,498
Leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	40,073	39,090
Total Loans	40,073	$ 39,090	$ 23,793
Asset-based [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current	211,302
Total Loans	211,302
Factoring [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
30-89 Days Past Due	12,892
Greater than 90 Days Past Due	188
Total Past Due	13,080
Current	96,132
Total Loans	$ 109,212

Credit Risk Profile by Risk Rat

Credit Risk Profile by Risk Rating - Originated and Non-PCI Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	$ 8,916,128	$ 7,465,794	$ 6,920,683
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	4,132,571	3,814,009
Commercial [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	4,130,081	3,814,009
Commercial [Member] | Non-watch list [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	3,863,331	3,532,611
Commercial [Member] | Watch [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	55,914	72,283
Commercial [Member] | Special Mention [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	82,110	98,750
Commercial [Member] | Substandard [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	128,726	110,365
Asset-based [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	211,302
Asset-based [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	211,302
Asset-based [Member] | Non-watch list [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	168,138
Asset-based [Member] | Special Mention [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	40,740
Asset-based [Member] | Substandard [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	2,424
Factoring [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	109,212
Factoring [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	109,212
Factoring [Member] | Non-watch list [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	105,116
Factoring [Member] | Substandard [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	4,096
Real estate - construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	395,848	256,006
Real estate - construction [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	395,316	256,006
Real estate - construction [Member] | Non-watch list [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	392,754	253,895
Real estate - construction [Member] | Watch [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	716	181
Real estate - construction [Member] | Special Mention [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating		756
Real estate - construction [Member] | Substandard [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	1,846	1,174
Real estate - commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	2,387,557	1,866,301
Real estate - commercial [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	2,385,623	1,866,301
Real estate - commercial [Member] | Non-watch list [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	2,297,846	1,780,323
Real estate - commercial [Member] | Watch [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	38,451	31,984
Real estate - commercial [Member] | Special Mention [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	17,597	8,691
Real estate - commercial [Member] | Substandard [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	$ 31,729	$ 45,303

Credit Risk Profile Based on Pa

Credit Risk Profile Based on Payment Activity - Originated and Non-PCI Loans (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	$ 8,916,128	$ 7,465,794	$ 6,920,683
Commercial - credit card [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	126,526	115,709
Commercial - credit card [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	126,526	115,709
Commercial - credit card [Member] | Performing [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	126,501	115,672
Commercial - credit card [Member] | Non-performing [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	25	37
Real estate - residential [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	433,287	319,827
Real estate - residential [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	433,287	319,827
Real estate - residential [Member] | Performing [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	431,037	319,265
Real estate - residential [Member] | Non-performing [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	2,250	562
Real estate - HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	698,814	643,586
Real estate - HELOC [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	698,767	643,586
Real estate - HELOC [Member] | Performing [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	694,769	643,567
Real estate - HELOC [Member] | Non-performing [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	3,998	19
Consumer - credit card [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	286,478	310,296
Consumer - credit card [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	286,478	310,296
Consumer - credit card [Member] | Performing [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	285,799	309,736
Consumer - credit card [Member] | Non-performing [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	679	560
Consumer - other [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	94,460	100,970
Consumer - other [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	91,771	100,970
Consumer - other [Member] | Performing [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	90,485	100,900
Consumer - other [Member] | Non-performing [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	1,286	70
Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	40,073	39,090	$ 23,793
Leases [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	40,073	39,090
Leases [Member] | Performing [Member] | Originated and Non-PCI Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	$ 40,073	$ 39,090

Credit Risk Profile by Risk R38

Credit Risk Profile by Risk Rating - Loans Accounted for under ASC 310-30 (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	$ 8,916,128	$ 7,465,794	$ 6,920,683
Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	4,132,571	3,814,009
Commercial [Member] | Loans Accounted for under ASC 310-30 [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	2,490
Commercial [Member] | Non-watch list [Member] | Loans Accounted for under ASC 310-30 [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	1,039
Commercial [Member] | Substandard [Member] | Loans Accounted for under ASC 310-30 [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	1,451
Real estate - construction [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	395,848	256,006
Real estate - construction [Member] | Loans Accounted for under ASC 310-30 [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	532
Real estate - construction [Member] | Substandard [Member] | Loans Accounted for under ASC 310-30 [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	532
Real estate - commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	2,387,557	$ 1,866,301
Real estate - commercial [Member] | Loans Accounted for under ASC 310-30 [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	1,934
Real estate - commercial [Member] | Substandard [Member] | Loans Accounted for under ASC 310-30 [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile by Risk Rating	$ 1,934

Credit Risk Profile Based on 39

Credit Risk Profile Based on Payment Activity - Loans Accounted for under ASC 310-30 (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	$ 8,916,128	$ 7,465,794	$ 6,920,683
Real estate - HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	698,814	643,586
Real estate - HELOC [Member] | Loans Accounted for under ASC 310-30 [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	47
Real estate - HELOC [Member] | Performing [Member] | Loans Accounted for under ASC 310-30 [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	47
Consumer - other [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	94,460	$ 100,970
Consumer - other [Member] | Loans Accounted for under ASC 310-30 [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	2,689
Consumer - other [Member] | Performing [Member] | Loans Accounted for under ASC 310-30 [Member]
Financing Receivable, Recorded Investment [Line Items]
Credit Risk Profile Based on Payment Activity	$ 2,689

Rollforward of Allowance for Lo

Rollforward of Allowance for Loan Losses by Portfolio Segment (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	$ 77,479	$ 75,514	$ 76,140	$ 74,751
Charge-offs	(5,602)	(4,579)	(8,750)	(9,264)
Recoveries	844	867	2,331	1,815
Provision	5,000	5,000	8,000	9,500
Ending balance	77,721	76,802	77,721	76,802
Ending balance: individually evaluated for impairment	1,561	3,615	1,561	3,615	$ 1,907
Ending balance: collectively evaluated for impairment	76,160	73,187	76,160	73,187
Total Loans	8,916,128	6,920,683	8,916,128	6,920,683	7,465,794
Ending balance: individually evaluated for impairment	43,171	26,925	43,171	26,925
Ending balance: collectively evaluated for impairment	8,872,957	6,893,758	8,872,957	6,893,758
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	55,659	48,363	55,349	48,886
Charge-offs	(3,088)	(1,476)	(3,500)	(2,947)
Recoveries	89	201	899	268
Provision	6,718	5,345	6,630	6,226
Ending balance	59,378	52,433	59,378	52,433
Ending balance: individually evaluated for impairment	1,266	2,497	1,266	2,497
Ending balance: collectively evaluated for impairment	58,112	49,936	58,112	49,936
Total Loans	4,579,611	3,658,124	4,579,611	3,658,124
Ending balance: individually evaluated for impairment	32,818	14,517	32,818	14,517
Ending balance: collectively evaluated for impairment	4,546,793	3,643,607	4,546,793	3,643,607
Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	11,912	16,091	10,725	15,342
Charge-offs	(68)	(55)	(100)	(181)
Recoveries	77	8	92	17
Provision	(3,029)	(1,827)	(1,825)	(961)
Ending balance	8,892	14,217	8,892	14,217
Ending balance: individually evaluated for impairment	295	1,118	295	1,118
Ending balance: collectively evaluated for impairment	8,597	13,099	8,597	13,099
Total Loans	3,915,506	2,859,563	3,915,506	2,859,563
Ending balance: individually evaluated for impairment	9,113	12,407	9,113	12,407
Ending balance: collectively evaluated for impairment	3,906,393	2,847,156	3,906,393	2,847,156
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	9,780	10,984	9,921	10,447
Charge-offs	(2,446)	(3,048)	(5,150)	(6,136)
Recoveries	678	658	1,340	1,530
Provision	1,276	1,480	3,177	4,233
Ending balance	9,288	10,074	9,288	10,074
Ending balance: collectively evaluated for impairment	9,288	10,074	9,288	10,074
Total Loans	380,938	379,203	380,938	379,203
Ending balance: individually evaluated for impairment	1,240	1	1,240	1
Ending balance: collectively evaluated for impairment	379,698	379,202	379,698	379,202
Leases [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	128	76	145	76
Provision	35	2	18	2
Ending balance	163	78	163	78
Ending balance: collectively evaluated for impairment	163	78	163	78
Total Loans	40,073	23,793	40,073	23,793	$ 39,090
Ending balance: collectively evaluated for impairment	$ 40,073	$ 23,793	$ 40,073	$ 23,793

Analysis of Impaired Loans by C

Analysis of Impaired Loans by Class (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	$ 48,687	$ 33,928
Recorded Investment with No Allowance	29,578	20,275
Recorded Investment with Allowance	13,593	7,029
Total Recorded Investment	43,171	27,304
Related Allowance	1,561	1,907	$ 3,615
Average Recorded Investment	33,053	29,277
Commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	36,941	21,758
Recorded Investment with No Allowance	20,925	13,928
Recorded Investment with Allowance	11,893	3,132
Total Recorded Investment	32,818	17,060
Related Allowance	1,266	972
Average Recorded Investment	21,239	16,022
Real estate - construction [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	1,453	1,540
Recorded Investment with No Allowance	813	983
Recorded Investment with Allowance	121
Total Recorded Investment	934	983
Related Allowance	59
Average Recorded Investment	960	939
Real estate - commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	6,254	9,546
Recorded Investment with No Allowance	3,960	4,454
Recorded Investment with Allowance	1,579	3,897
Total Recorded Investment	5,539	8,351
Related Allowance	236	935
Average Recorded Investment	8,930	11,298
Real estate - residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	2,544	1,083
Recorded Investment with No Allowance	2,410	909
Total Recorded Investment	2,410	909
Average Recorded Investment	1,433	1,006
Real estate - HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	255
Recorded Investment with No Allowance	230
Total Recorded Investment	230
Average Recorded Investment	77
Consumer - other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	1,240	1
Recorded Investment with No Allowance	1,240	1
Total Recorded Investment	1,240	1
Average Recorded Investment	$ 414	$ 12

Summary of Loans Restructured b

Summary of Loans Restructured by Class (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)Contract	Jun. 30, 2014USD ($)Contract	Jun. 30, 2015USD ($)Contract	Jun. 30, 2014USD ($)Contract
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	15	3	15	4
Pre-Modification Outstanding Recorded Investment	$ 19,584	$ 210	$ 19,584	$ 679
Post-Modification Outstanding Recorded Investment	$ 19,584	$ 234	$ 19,584	$ 703
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	14		14	1
Pre-Modification Outstanding Recorded Investment	$ 19,463		$ 19,463	$ 469
Post-Modification Outstanding Recorded Investment	$ 19,463		$ 19,463	$ 469
Residential Real Estate Loans [Member]
Financing Receivable, Modifications [Line Items]
Number of Contracts | Contract	1	3	1	3
Pre-Modification Outstanding Recorded Investment	$ 121	$ 210	$ 121	$ 210
Post-Modification Outstanding Recorded Investment	$ 121	$ 234	$ 121	$ 234

Securities Available for Sale (

Securities Available for Sale (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale, Amortized Cost	$ 6,928,583	$ 6,894,222
Securities available for sale, Gross Unrealized Gains	40,032	52,724
Securities available for sale, Gross Unrealized Losses	(43,500)	(35,010)
Total securities available for sale, Fair Value	6,925,115	6,911,936
U.S. Treasury [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale, Amortized Cost	353,174	519,484
Securities available for sale, Gross Unrealized Gains	747	501
Securities available for sale, Gross Unrealized Losses	(6)	(525)
Total securities available for sale, Fair Value	353,915	519,460
U.S. Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale, Amortized Cost	807,484	991,084
Securities available for sale, Gross Unrealized Gains	1,162	780
Securities available for sale, Gross Unrealized Losses	(491)	(1,175)
Total securities available for sale, Fair Value	808,155	990,689
Mortgage-backed [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale, Amortized Cost	3,535,277	3,276,009
Securities available for sale, Gross Unrealized Gains	20,064	28,470
Securities available for sale, Gross Unrealized Losses	(31,050)	(26,875)
Total securities available for sale, Fair Value	3,524,291	3,277,604
State and political subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale, Amortized Cost	2,151,526	1,983,549
Securities available for sale, Gross Unrealized Gains	18,032	22,973
Securities available for sale, Gross Unrealized Losses	(11,460)	(5,165)
Total securities available for sale, Fair Value	2,158,098	2,001,357
Corporates [Member]
Schedule of Available-for-sale Securities [Line Items]
Securities available for sale, Amortized Cost	81,122	124,096
Securities available for sale, Gross Unrealized Gains	27
Securities available for sale, Gross Unrealized Losses	(493)	(1,270)
Total securities available for sale, Fair Value	$ 80,656	$ 122,826

Summary of Contractual Maturity

Summary of Contractual Maturity Information for Securities Available for Sale (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Due in 1 year or less, Amortized Cost	$ 638,122
Due after 1 year through 5 years, Amortized Cost	1,811,855
Due after 5 years through 10 years, Amortized Cost	863,778
Due after 10 years, Amortized Cost	79,551
Total, Amortized Cost	3,393,306
Mortgage-backed securities, Amortized Cost	3,535,277
Securities available for sale, Amortized Cost	6,928,583	$ 6,894,222
Due in 1 year or less, Fair Value	639,044
Due after 1 year through 5 years, Fair Value	1,821,535
Due after 5 years through 10 years, Fair Value	862,706
Due after 10 years, Fair Value	77,539
Total, Fair Value	3,400,824
Mortgage-backed securities, Fair Value	3,524,291
Total securities available for sale, Fair Value	$ 6,925,115	$ 6,911,936

Securities - Additional Informa

Securities - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Schedule of Trading Securities and Other Trading Assets [Line Items]
Proceeds from sales of securities available for sale	$ 705,238,000	$ 409,804,000
Gross realized gains from securities	8,400,000	4,100,000
Gross realized losses from securities	48,000	11,000
Sales of securities held to maturity	0	0
Unrealized gains on trading securities	156,000	$ 41,000
Fair value of other marketable securities	17,000,000		$ 16,700,000
Fair value of other non-marketable securities	2,400,000		8,500,000
U.S. Government and Other Public Deposit [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Pledged securities for deposits	5,600,000,000		5,700,000,000
Federal Reserve Discount Window [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Pledged securities for deposits	$ 1,500,000,000		$ 1,200,000,000

Gross Unrealized Losses and Fai

Gross Unrealized Losses and Fair Value of Investment Securities Available for Sale (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Gain (Loss) on Investments [Line Items]
Less than 12 months, Fair Value	$ 2,510,652	$ 1,790,321
Less than 12 months, Unrealized Losses	(25,973)	(11,037)
12 months or more, Fair Value	588,675	1,025,349
12 months or more, Unrealized Losses	(17,527)	(23,973)
Total Fair Value	3,099,327	2,815,670
Total Unrealized Losses	(43,500)	(35,010)
U.S. Treasury [Member]
Gain (Loss) on Investments [Line Items]
Less than 12 months, Fair Value	9,965	236,591
Less than 12 months, Unrealized Losses	(6)	(329)
12 months or more, Fair Value		14,863
12 months or more, Unrealized Losses		(196)
Total Fair Value	9,965	251,454
Total Unrealized Losses	(6)	(525)
U.S. Agencies [Member]
Gain (Loss) on Investments [Line Items]
Less than 12 months, Fair Value	104,031	387,999
Less than 12 months, Unrealized Losses	(176)	(689)
12 months or more, Fair Value	64,711	81,593
12 months or more, Unrealized Losses	(315)	(486)
Total Fair Value	168,742	469,592
Total Unrealized Losses	(491)	(1,175)
Mortgage-backed [Member]
Gain (Loss) on Investments [Line Items]
Less than 12 months, Fair Value	1,503,100	727,142
Less than 12 months, Unrealized Losses	(16,552)	(8,370)
12 months or more, Fair Value	399,744	616,044
12 months or more, Unrealized Losses	(14,498)	(18,504)
Total Fair Value	1,902,844	1,343,186
Total Unrealized Losses	(31,050)	(26,874)
State and political subdivisions [Member]
Gain (Loss) on Investments [Line Items]
Less than 12 months, Fair Value	875,725	401,934
Less than 12 months, Unrealized Losses	(9,166)	(1,406)
12 months or more, Fair Value	73,175	226,678
12 months or more, Unrealized Losses	(2,294)	(3,760)
Total Fair Value	948,900	628,612
Total Unrealized Losses	(11,460)	(5,166)
Corporates [Member]
Gain (Loss) on Investments [Line Items]
Less than 12 months, Fair Value	17,831	36,655
Less than 12 months, Unrealized Losses	(73)	(243)
12 months or more, Fair Value	51,045	86,171
12 months or more, Unrealized Losses	(420)	(1,027)
Total Fair Value	68,876	122,826
Total Unrealized Losses	$ (493)	$ (1,270)

Securities Held to Maturity (De

Securities Held to Maturity (Detail) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Schedule of Held-to-maturity Securities [Line Items]
Held to Maturity, Amortized Cost	$ 446,881	$ 278,054
Held to Maturity, Fair value	475,391	304,112
State and political subdivisions [Member]
Schedule of Held-to-maturity Securities [Line Items]
Held to Maturity, Amortized Cost	446,881	278,054
Held to Maturity, Gross Unrealized Gains	28,510	26,058
Held to Maturity, Gross Unrealized Losses	0	0
Held to Maturity, Fair value	$ 475,391	$ 304,112

Contractual Maturity Informatio

Contractual Maturity Information for Securities Held to Maturity (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Due in 1 year or less, Amortized Cost	$ 2,157
Due after 1 year through 5 years, Amortized Cost	74,653
Due after 5 years through 10 years, Amortized Cost	284,028
Due after 10 years, Amortized Cost	86,043
Total securities held to maturity, Amortized Cost	446,881	$ 278,054
Due in 1 year or less, Fair Value	2,295
Due after 1 year through 5 years, Fair Value	79,416
Due after 5 years through 10 years, Fair Value	302,148
Due after 10 years, Fair Value	91,532
Total securities held to maturity, Fair Value	$ 475,391	$ 304,112

Schedule of Federal Reserve Ban

Schedule of Federal Reserve Bank Stock and Other Securities (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule of Other Securities [Line Items]
Fair Value	$ 77,800	$ 68,474
Federal Reserve Bank Stock and Other Securities [Member]
Schedule of Other Securities [Line Items]
Amortized Cost	59,239	47,948
Gross Unrealized Gains	18,640	20,605
Gross Unrealized Losses	(79)	(79)
Fair Value	77,800	68,474
Federal Reserve Bank Stock and Other Securities [Member] | Other securities - non-marketable [Member]
Schedule of Other Securities [Line Items]
Amortized Cost	21,939	21,669
Gross Unrealized Gains	1,609	3,937
Gross Unrealized Losses	(79)	(79)
Fair Value	23,469	25,527
Federal Reserve Bank Stock and Other Securities [Member] | Other securities - marketable [Member]
Schedule of Other Securities [Line Items]
Gross Unrealized Gains	17,031	16,668
Fair Value	17,031	16,668
Federal Reserve Bank Stock and Other Securities [Member] | FRB and FHLB stock [Member]
Schedule of Other Securities [Line Items]
Amortized Cost	37,300	26,279
Fair Value	$ 37,300	$ 26,279

Changes in Carrying Amount of G

Changes in Carrying Amount of Goodwill (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2015USD ($)
Goodwill And Other Intangible Assets [Line Items]
Beginning Balance	$ 209,758
Acquisition of Marquette Financial Companies	18,459
Ending Balance	228,217
Bank [Member]
Goodwill And Other Intangible Assets [Line Items]
Beginning Balance	142,753
Acquisition of Marquette Financial Companies	18,459
Ending Balance	161,212
Institutional Investment Management [Member]
Goodwill And Other Intangible Assets [Line Items]
Beginning Balance	47,529
Ending Balance	47,529
Asset Servicing [Member]
Goodwill And Other Intangible Assets [Line Items]
Beginning Balance	19,476
Ending Balance	$ 19,476

Changes In Intangible Assets (D

Changes In Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 159,286	$ 144,304
Accumulated Amortization	105,637	100,313
Net Carrying Amount	53,649	43,991
Core deposit intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	36,497	36,497
Accumulated Amortization	33,186	32,721
Net Carrying Amount	3,311	3,776
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	104,560	104,560
Accumulated Amortization	69,503	64,980
Net Carrying Amount	35,057	39,580
Other intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,247	3,247
Accumulated Amortization	2,726	2,612
Net Carrying Amount	521	$ 635
Core deposit - Marquette Acquisition [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	10,931
Accumulated Amortization	153
Net Carrying Amount	10,778
Customer Relationships - Marquette Acquisition [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,100
Accumulated Amortization	29
Net Carrying Amount	3,071
Other intangible assets - Marquette Acquisition [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	951
Accumulated Amortization	40
Net Carrying Amount	$ 911

Aggregate Amortization Expense

Aggregate Amortization Expense Recognized (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Aggregate amortization expense	$ 2,569	$ 3,074	$ 5,324	$ 6,176

Estimated Amortization Expense

Estimated Amortization Expense of Intangible Assets (Detail) $ in Thousands	Jun. 30, 2015USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
For the six months ending December 31, 2015	$ 5,854
For the year ending December 31, 2016	11,069
For the year ending December 31, 2017	9,549
For the year ending December 31, 2018	7,160
For the year ending December 31, 2019	6,370
For the year ending December 31, 2020	$ 5,624

Business Segment Reporting - Ad

Business Segment Reporting - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2015Segment
Segment Reporting [Abstract]
Number of reportable segments	4

Schedule of Segment Financial R

Schedule of Segment Financial Results (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Segment Reporting Information [Line Items]
Net interest income	$ 97,360	$ 86,170	$ 187,718	$ 171,615
Provision for loan losses	5,000	5,000	8,000	9,500
Noninterest income	119,550	134,001	244,757	256,965
Noninterest expense	171,964	166,201	336,377	338,132
Income before income taxes	39,946	48,970	88,098	80,948
Income tax expense	9,732	14,298	24,119	22,863
Net Income	30,214	34,672	63,979	58,085
Average assets	17,413,000	15,618,000	17,124,000	16,065,000
Bank [Member]
Segment Reporting Information [Line Items]
Net interest income	82,758	72,481	158,085	143,602
Provision for loan losses	2,612	2,686	4,211	5,112
Noninterest income	47,548	56,024	99,099	103,458
Noninterest expense	107,293	100,788	207,861	208,337
Income before income taxes	20,401	25,031	45,112	33,611
Income tax expense	4,915	7,482	12,313	9,801
Net Income	15,486	17,549	32,799	23,810
Average assets	13,423,000	12,008,000	13,089,000	12,204,000
Payment Solutions [Member]
Segment Reporting Information [Line Items]
Net interest income	13,599	12,390	27,632	24,778
Provision for loan losses	2,388	2,314	3,789	4,388
Noninterest income	23,293	21,201	46,432	41,420
Noninterest expense	26,399	24,506	51,062	45,453
Income before income taxes	8,105	6,771	19,213	16,357
Income tax expense	2,046	1,931	5,373	4,524
Net Income	6,059	4,840	13,840	11,833
Average assets	2,980,000	2,148,000	3,031,000	2,023,000
Institutional Investment Management [Member]
Segment Reporting Information [Line Items]
Net interest income		(1)	1	(3)
Noninterest income	25,684	33,999	52,768	68,094
Noninterest expense	18,285	22,053	36,227	47,943
Income before income taxes	7,399	11,945	16,542	20,148
Income tax expense	1,785	3,389	4,511	5,532
Net Income	5,614	8,556	12,031	14,616
Average assets	70,000	69,000	72,000	71,000
Asset Servicing [Member]
Segment Reporting Information [Line Items]
Net interest income	1,003	1,300	2,000	3,238
Noninterest income	23,025	22,777	46,458	43,993
Noninterest expense	19,987	18,854	41,227	36,399
Income before income taxes	4,041	5,223	7,231	10,832
Income tax expense	986	1,496	1,922	3,006
Net Income	3,055	3,727	5,309	7,826
Average assets	$ 940,000	$ 1,393,000	$ 932,000	$ 1,767,000

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail) - Marquette [Member] $ / shares in Units, $ in Thousands	May. 31, 2015USD ($)Branchshares	May. 31, 2015USD ($)Branch	Jun. 30, 2015USD ($)$ / sharesshares	Jun. 30, 2014USD ($)$ / shares	May. 29, 2015$ / shares
Business Acquisition [Line Items]
Percentage of outstanding common shares acquired in the acquisition	100.00%	100.00%
Conversion of Company's common stock due to merger | shares	9.2295
Company's common shares issued | shares	3,470,000		3,470,000
Market value common stock issued	$ 179,700	$ 179,700
Closing stock price | $ / shares					$ 51.79
Loans purchased at fair value	980,300	980,300
Long-term debt			$ 89,971
Fair value of acquired identifiable intangible assets	15,000	15,000
Acquisition-related costs			1,500
Revenue, Pro forma			452,600	$ 460,700
Earnings, Pro forma			$ 62,900	$ 62,300
Basic earnings per share, Pro forma | $ / shares			$ 1.34	$ 1.34
Core deposit intangible assets [Member]
Business Acquisition [Line Items]
Fair value of acquired identifiable intangible assets	10,900	10,900
Customer Lists [Member]
Business Acquisition [Line Items]
Fair value of acquired identifiable intangible assets	3,100	3,100
Noncompete Agreements [Member]
Business Acquisition [Line Items]
Fair value of acquired identifiable intangible assets	1,000	1,000
Marquette Capital Trust I, Marquette Capital Trust II, Marquette Capital Trust III And Marquette Capital Trust IV [Member]
Business Acquisition [Line Items]
Long-term debt	103,100	103,100
Long-term debt acquired at fair value	$ 65,500	$ 65,500
Trust Preferred Securities [Member] | Marquette Capital Trust II [Member]
Business Acquisition [Line Items]
Interest rate of trust preferred securities till January 2016	6.30%	6.30%
Interest rate description of trust preferred securities			(LIBOR) rate plus 133 basis points
Interest rate of trust preferred securities		1.33%
Trust Preferred Securities [Member] | Marquette Capital Trust I, Marquette Capital Trust III And Marquette Capital Trust IV [Member]
Business Acquisition [Line Items]
Interest rate description of trust preferred securities			LIBOR rate with spreads ranging from 133 basis points
Minimum [Member] | Trust Preferred Securities [Member] | Marquette Capital Trust I, Marquette Capital Trust III And Marquette Capital Trust IV [Member]
Business Acquisition [Line Items]
Interest rate of trust preferred securities		1.33%
Maximum [Member] | Trust Preferred Securities [Member] | Marquette Capital Trust I, Marquette Capital Trust III And Marquette Capital Trust IV [Member]
Business Acquisition [Line Items]
Interest rate of trust preferred securities		1.60%
Arizona And Texas [Member]
Business Acquisition [Line Items]
Number of branches | Branch	13	13
Commercial Specialty Lending Business [Member]
Business Acquisition [Line Items]
Number of branches | Branch	2	2
Purchase Discounts And Premium [Member]
Business Acquisition [Line Items]
Amortization expenses			$ 402
Acquired Intangible Assets [Member]
Business Acquisition [Line Items]
Amortization expenses			$ 220

Summary of Net Assets Acquired

Summary of Net Assets Acquired (at Fair Value) and Consideration Transferred (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	May. 31, 2015	Jun. 30, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Total Assets Acquired		$ 1,321,322
Total liabilities assumed		1,160,044
Preliminary goodwill		228,217	$ 209,758	$ 209,758
Marquette [Member]
Business Acquisition [Line Items]
Loans		980,250
Investment securities		177,803
Cash and due from banks		104,539
Premises and equipment, net		11,508
Identifiable intangible assets		14,982
Other assets		32,240
Total Assets Acquired		1,321,322
Noninterest-bearing deposits		235,426
Interest-bearing deposits		708,629
Short-term debt		112,133
Long-term debt		89,971
Other liabilities		13,885
Total liabilities assumed		1,160,044
Net identifiable assets acquired		161,278
Preliminary goodwill		18,459
Net assets acquired		$ 179,737
Company's common shares issued	3,470	3,470
Purchase price per share of the Company's common stock		$ 51.79
Fair value of total consideration transferred		$ 179,737

Notional Amount of Off-Balance

Notional Amount of Off-Balance Sheet Financial Instruments (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Commitments to extend credit for loans (excluding credit card loans) [Member]
Commitments and Contingencies Disclosure [Line Items]
Contract or notional amount of off-balance sheet financial instruments	$ 4,464,244	$ 3,509,841
Commitments to extend credit under credit card loans [Member]
Commitments and Contingencies Disclosure [Line Items]
Contract or notional amount of off-balance sheet financial instruments	2,851,533	2,690,752
Commercial letters of credit [Member]
Commitments and Contingencies Disclosure [Line Items]
Contract or notional amount of off-balance sheet financial instruments	6,403	1,334
Standby letters of credit [Member]
Commitments and Contingencies Disclosure [Line Items]
Contract or notional amount of off-balance sheet financial instruments	364,826	375,003
Futures contracts [Member]
Commitments and Contingencies Disclosure [Line Items]
Contract or notional amount of off-balance sheet financial instruments	5,200
Forward foreign exchange contracts [Member]
Commitments and Contingencies Disclosure [Line Items]
Contract or notional amount of off-balance sheet financial instruments	90,584	144,950
Spot foreign exchange contracts [Member]
Commitments and Contingencies Disclosure [Line Items]
Contract or notional amount of off-balance sheet financial instruments	$ 6,390	$ 14,721

Summary of Fair Value of Deriva

Summary of Fair Value of Derivative Assets and Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair value	$ 7,194	$ 7,138
Liability Derivatives, Fair value	6,875	7,535
Derivatives not Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair value	6,437	7,138
Liability Derivatives, Fair value	6,635	7,250
Derivatives Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Asset Derivatives, Fair value	757
Liability Derivatives, Fair value	$ 240	$ 285

Derivatives and Hedging Activ60

Derivatives and Hedging Activities - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)Derivative	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)Derivative	Jun. 30, 2014USD ($)
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Termination value of derivatives in net liability position	$ 6,800,000		$ 6,800,000
Derivatives Designated as Hedging Instruments [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Gain (Loss) related to changes in fair value of swaps	7,000	$ 8,000	2,000	$ 18,000
Interest Rate Swap [Member] | Derivatives Designated as Hedging Instruments [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount of interest rate swaps	$ 16,200,000		$ 16,200,000
Number of interest rate swaps | Derivative	2		2
Interest Rate Swap [Member] | Derivatives not Designated as Hedging Instruments [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Notional amount of interest rate swaps	$ 391,900,000		$ 391,900,000
Number of interest rate swaps | Derivative	34		34
Gain (Loss) related to changes in fair value of swaps	$ 20,000	$ 31,000	$ (86,000)	$ (52,000)

Summary of Amount of Gain (Loss

Summary of Amount of Gain (Loss) Recognized in Other Non-Interest Expense in Consolidated Statements of Income Related to Derivative Asset and Liability (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivatives not Designated as Hedging Instruments [Member] | Interest Rate Products [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative instruments	$ 20	$ 31	$ (86)	$ (52)
Derivatives Designated as Hedging Instruments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative instruments	7	8	2	18
Derivatives Designated as Hedging Instruments [Member] | Interest Rate Products [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative instruments	7	(8)	2	(18)
Derivatives Designated as Hedging Instruments [Member] | Fair value adjustments on derivatives [Member] | Interest Rate Products [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative instruments	121	(116)	6	(235)
Derivatives Designated as Hedging Instruments [Member] | Fair value adjustments on hedged items [Member] | Interest Rate Products [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivative instruments	$ (114)	$ 108	$ (4)	$ 217

Assets Measured at Fair Value o

Assets Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading securities	$ 36,616	$ 27,203
Available for sale securities	6,925,115	6,911,936
Derivatives	7,194	7,138
Contingent consideration liability	31,291	53,411	$ 52,027	$ 46,201
Derivatives	6,875	7,535
Fair Value Measurement, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading securities	36,616	27,203
Available for sale securities	6,925,115	6,911,936
Company-owned life insurance	27,488	26,886
Derivatives	7,194	7,138
Total	6,996,413	6,973,163
Deferred compensation	34,310	26,885
Contingent consideration liability	31,291	53,411
Derivatives	6,875	7,535
Total	72,476	87,831
Fair Value Measurement, Recurring [Member] | Trading-other [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading securities	18,787	18,107
Fair Value Measurement, Recurring [Member] | U.S. Treasury [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading securities	3,455	400
Available for sale securities	353,915	519,460
Fair Value Measurement, Recurring [Member] | U.S. Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading securities	3,524	1,315
Available for sale securities	808,155	990,689
Fair Value Measurement, Recurring [Member] | Mortgage-backed [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading securities	5,464
Available for sale securities	3,524,291	3,277,604
Fair Value Measurement, Recurring [Member] | State and political subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading securities	5,386	7,381
Available for sale securities	2,158,098	2,001,357
Fair Value Measurement, Recurring [Member] | Corporates [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available for sale securities	80,656	122,826
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading securities	22,200	18,500
Available for sale securities	434,600	642,300
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value Measurement, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading securities	22,240	18,506
Available for sale securities	434,571	642,286
Total	456,811	660,792
Deferred compensation	34,310	26,885
Total	34,310	26,885
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value Measurement, Recurring [Member] | Trading-other [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading securities	18,785	18,106
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value Measurement, Recurring [Member] | U.S. Treasury [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading securities	3,455	400
Available for sale securities	353,915	519,460
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value Measurement, Recurring [Member] | Corporates [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Available for sale securities	80,656	122,826
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading securities	14,400	8,700
Available for sale securities	6,490,500	6,269,600
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurement, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading securities	14,376	8,697
Available for sale securities	6,490,544	6,269,650
Company-owned life insurance	27,488	26,886
Derivatives	7,194	7,138
Total	6,539,602	6,312,371
Derivatives	6,875	7,535
Total	6,875	7,535
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurement, Recurring [Member] | Trading-other [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading securities	2	1
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurement, Recurring [Member] | U.S. Agencies [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading securities	3,524	1,315
Available for sale securities	808,155	990,689
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurement, Recurring [Member] | Mortgage-backed [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading securities	5,464
Available for sale securities	3,524,291	3,277,604
Significant Other Observable Inputs (Level 2) [Member] | Fair Value Measurement, Recurring [Member] | State and political subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Trading securities	5,386	7,381
Available for sale securities	2,158,098	2,001,357
Significant Unobservable Inputs (Level 3) [Member] | Fair Value Measurement, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Contingent consideration liability	31,291	53,411
Total	$ 31,291	$ 53,411

Reconciliation of Beginning and

Reconciliation of Beginning and Ending Balances of Contingent Consideration Liability (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Fair Value Disclosures [Abstract]
Beginning balance	$ 53,411	$ 46,201
Payment of contingent considerations on acquisitions	(18,702)	(13,725)
Contingency reserve		14,272
Fair value adjustments	(3,418)	5,279
Ending balance	$ 31,291	$ 52,027

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) - Jun. 30, 2014 - USD ($) $ in Thousands	Total	Total	Total
Fair Value Disclosures [Abstract]
Contingency reserve expense		$ 5,272	$ 20,272
Payment made for reducing contingency reserve	$ 6,000		6,000
Remaining contingency reserve	$ 14,272	$ 14,272	$ 14,272

Quantitative Information about

Quantitative Information about Significant Unobservable Input used in Fair Value Measurement for Contingent Consideration Liability Measured at Fair Value on Recurring Basis (Detail) - Significant Unobservable Inputs (Level 3) [Member]	6 Months Ended
	Jun. 30, 2015
Minimum [Member]
Business Acquisition, Contingent Consideration [Line Items]
Revenue and expense growth percentage	1.00%
Maximum [Member]
Business Acquisition, Contingent Consideration [Line Items]
Revenue and expense growth percentage	102.00%

Assets Measured at Fair Value66

Assets Measured at Fair Value on Non-Recurring Basis (Detail) - Fair Value, Measurements, Non-Recurring [Member] - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Fair Value Of Assets And Liabilities Measured At Non Recurring Basis [Line Items]
Assets measured at fair value	$ 328	$ 2,345
Impaired loans [Member]
Fair Value Of Assets And Liabilities Measured At Non Recurring Basis [Line Items]
Assets measured at fair value	346	2,345
Other real estate owned [Member]
Fair Value Of Assets And Liabilities Measured At Non Recurring Basis [Line Items]
Assets measured at fair value	(18)
Fair Value, Inputs [Member]
Fair Value Of Assets And Liabilities Measured At Non Recurring Basis [Line Items]
Assets measured at fair value	14,527	5,330
Fair Value, Inputs [Member] | Impaired loans [Member]
Fair Value Of Assets And Liabilities Measured At Non Recurring Basis [Line Items]
Assets measured at fair value	12,032	5,122
Fair Value, Inputs [Member] | Other real estate owned [Member]
Fair Value Of Assets And Liabilities Measured At Non Recurring Basis [Line Items]
Assets measured at fair value	2,495	208
Significant Unobservable Inputs (Level 3) [Member]
Fair Value Of Assets And Liabilities Measured At Non Recurring Basis [Line Items]
Assets measured at fair value	14,527	5,330
Significant Unobservable Inputs (Level 3) [Member] | Impaired loans [Member]
Fair Value Of Assets And Liabilities Measured At Non Recurring Basis [Line Items]
Assets measured at fair value	12,032	5,122
Significant Unobservable Inputs (Level 3) [Member] | Other real estate owned [Member]
Fair Value Of Assets And Liabilities Measured At Non Recurring Basis [Line Items]
Assets measured at fair value	$ 2,495	$ 208

Estimated Fair Value of Financi

Estimated Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and short-term investments	$ 1,280,400	$ 2,101,800
Securities available for sale	6,925,115	6,911,936
Securities held to maturity	446,881	278,054
Other securities	77,800	68,474
Trading securities	36,616	27,203
Loans (exclusive of allowance for loan loss)	8,918,900	7,466,400
Derivatives	7,200	7,100
Demand and savings deposits	13,190,800	12,353,300
Time deposits	1,305,800	1,263,600
Other borrowings	1,774,400	2,025,100
Long-term debt	88,346	8,810
Derivatives	6,900	7,500
Total Estimated Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and short-term investments	1,280,400	2,101,800
Securities available for sale	6,925,100	6,911,900
Securities held to maturity	475,400	304,100
Other securities	77,800	68,500
Trading securities	36,600	27,200
Loans (exclusive of allowance for loan loss)	8,946,200	7,483,300
Derivatives	7,200	7,100
Demand and savings deposits	13,190,800	12,353,300
Time deposits	1,305,800	1,263,600
Other borrowings	1,774,400	2,025,100
Long-term debt	90,300	9,100
Derivatives	6,900	7,500
Commitments to extend credit for loans	2,300	5,700
Commercial letters of credit	100	200
Standby letters of credit	1,200	2,400
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and short-term investments	1,202,600	2,006,300
Securities available for sale	434,600	642,300
Trading securities	22,200	18,500
Demand and savings deposits	13,190,800	12,353,300
Other borrowings	41,400	42,000
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and short-term investments	77,800	95,500
Securities available for sale	6,490,500	6,269,600
Securities held to maturity	475,400	304,100
Other securities	77,800	68,500
Trading securities	14,400	8,700
Loans (exclusive of allowance for loan loss)	8,946,200	7,483,300
Derivatives	7,200	7,100
Time deposits	1,305,800	1,263,600
Other borrowings	1,733,000	1,983,100
Long-term debt	90,300	9,100
Derivatives	$ 6,900	$ 7,500

Uncategorized Items - umbf-2015

Label	Element	Value
Asset Servicing [Member]
Goodwill	us-gaap_Goodwill	$ 19,476
Bank [Member]
Goodwill	us-gaap_Goodwill	142,753
Institutional Investment Management [Member]
Goodwill	us-gaap_Goodwill	$ 47,529