Susquehanna Bancshares (SUSQ) 10-Q 7 Nov 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014
Document And Entity Information [Abstract]	'
Document Type	'10-Q
Amendment Flag	'false
Document Period End Date	30-Sep-14
Document Fiscal Year Focus	'2014
Document Fiscal Period Focus	'Q3
Trading Symbol	'SUSQ
Entity Registrant Name	'SUSQUEHANNA BANCSHARES INC
Entity Central Index Key	'0000700863
Current Fiscal Year End Date	'--12-31
Entity Filer Category	'Large Accelerated Filer
Entity Common Stock, Shares Outstanding	181,271,704

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Assets	'	'
Cash and due from banks	$772,677	$305,357
Unrestricted short-term investments	40,508	37,967
Cash and cash equivalents	813,185	343,324
Interest-bearing deposits held by consolidated variable interest entities that can be used only to settle obligations of the consolidated variable interest entities	2,211	2,347
Restricted short-term investments	36,943	42,913
Available-for-sale securities	2,192,615	2,375,224
Restricted investment in bank stocks	133,119	158,232
Loans and leases, net of deferred costs and fees	13,361,516	13,503,392
Loans held by consolidated variable interest entities that can be used only to settle obligations of the consolidated variable interest entities	64,205	72,694
Less: Allowance for loan and lease losses	136,870	157,608
Net loans and leases	13,288,851	13,418,478
Premises and equipment, net	168,466	173,542
Other real estate and foreclosed assets	9,898	17,573
Accrued interest receivable	39,899	41,690
Bank-owned life insurance	449,199	449,320
Goodwill	1,275,439	1,275,439
Intangible assets with finite lives	27,163	32,262
Deferred income tax assets	6,903	6,472
Other assets	139,436	136,673
Total Assets	18,583,327	18,473,489
Deposits [Abstract]	'	'
Noninterest-bearing	1,958,308	1,913,526
Interest-bearing	11,630,216	10,955,846
Total deposits	13,588,524	12,869,372
Federal Home Loan Bank short-term borrowings	850,000	1,450,000
Other short-term borrowings	532,675	555,740
Federal Home Loan Bank long-term borrowings	65,362	81,282
Other long-term debt	175,219	250,227
Junior subordinated debentures	146,059	155,002
Long-term debt of consolidated variable interest entities for which creditors do not have recourse to Susquehanna's general credit	34,839	48,031
Accrued interest, taxes, and expenses payable	72,044	82,150
Deferred income tax liabilities	128,389	70,308
Other liabilities	238,956	193,790
Total Liabilities	15,832,067	15,755,902
Shareholders' Equity	'	'
Common stock, $2.00 par value, 400,000,000 shares authorized; Issued: 181,678,821 at September 30, 2014, and 187,676,711 at December 31, 2013	363,358	375,353
Treasury stock, at cost. 368,950 at September 30, 2014, and 313,568 at December 31, 2013	-3,100	-2,531
Additional paid-in capital	1,605,671	1,652,116
Retained earnings	811,462	744,215
Accumulated other comprehensive loss, net of taxes of $14,668 and $25,039, respectively	-26,131	-51,566
Total Shareholders' Equity	2,751,260	2,717,587
Total Liabilities and Shareholders' Equity	$18,583,327	$18,473,489

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified
Common stock, par value	$2	$2
Common stock, shares authorized	400,000,000	400,000,000
Common stock, issued	181,678,821	187,676,711
Treasury stock, at cost	368,950	313,568
Accumulated other comprehensive loss, taxes	$14,668	$25,039

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	3 Months Ended		9 Months Ended
Share data in Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Interest Income:	'	'	'	'
Loans and leases, including fees	$147,761,000	$155,596,000	$445,301,000	$475,926,000
Securities:	'	'	'	'
Taxable	8,459,000	10,641,000	27,211,000	30,584,000
Tax-exempt	3,383,000	3,527,000	10,323,000	10,682,000
Dividends	2,108,000	1,297,000	6,007,000	3,609,000
Short-term investments	24,000	16,000	66,000	87,000
Total interest income	161,735,000	171,077,000	488,908,000	520,888,000
Deposits:	'	'	'	'
Interest-bearing demand and savings	4,256,000	4,190,000	12,249,000	13,604,000
Time	10,803,000	10,229,000	30,677,000	33,115,000
Federal Home Loan Bank short-term borrowings	4,554,000	3,915,000	13,772,000	10,738,000
Other short-term borrowings	2,091,000	2,242,000	6,222,000	6,548,000
Federal Home Loan Bank long-term borrowings	247,000	284,000	735,000	888,000
Other long-term debt	3,319,000	4,268,000	7,030,000	12,743,000
Total interest expense	25,270,000	25,128,000	70,685,000	77,636,000
Net interest income	136,465,000	145,949,000	418,223,000	443,252,000
Provision for loan and lease losses	9,000,000	5,000,000	18,000,000	29,000,000
Net interest income, after provision for loan and lease losses	127,465,000	140,949,000	400,223,000	414,252,000
Noninterest Income:	'	'	'	'
Service charges on deposit accounts	9,561,000	9,514,000	27,855,000	27,533,000
Vehicle origination and servicing fees	1,691,000	2,907,000	7,574,000	8,668,000
Wealth management commissions and fees	13,199,000	12,606,000	38,587,000	38,285,000
Commissions on property and casualty insurance sales	3,992,000	3,872,000	13,872,000	12,774,000
Other commissions and fees	5,689,000	4,885,000	16,125,000	13,940,000
Income from bank-owned life insurance	1,634,000	1,493,000	4,943,000	4,521,000
Mortgage banking revenue	2,432,000	2,237,000	7,846,000	10,345,000
Capital markets revenue	1,593,000	111,000	3,710,000	4,269,000
Net realized gain (loss) on sales and impairment of securities	0	2,000	3,285,000	-51,000
Other	4,826,000	3,716,000	8,258,000	12,779,000
Total noninterest income	44,617,000	41,343,000	132,055,000	133,063,000
Noninterest Expenses:	'	'	'	'
Salaries and employee benefits	68,042,000	61,879,000	201,948,000	191,381,000
Occupancy	12,089,000	11,352,000	37,850,000	33,721,000
Furniture and equipment	4,043,000	3,661,000	12,045,000	10,986,000
Professional and technology services	6,168,000	7,173,000	19,427,000	18,733,000
Advertising and marketing	3,784,000	3,319,000	10,927,000	9,084,000
FDIC insurance	5,038,000	5,421,000	15,084,000	13,760,000
Legal fees	1,699,000	1,774,000	4,882,000	5,454,000
Amortization of intangible assets	2,220,000	2,502,000	7,126,000	8,823,000
Vehicle lease disposal	2,222,000	1,193,000	6,688,000	3,796,000
Other	19,106,000	19,427,000	56,691,000	59,430,000
Total noninterest expenses	124,411,000	117,701,000	372,668,000	355,168,000
Income before income taxes	47,671,000	64,591,000	159,610,000	192,147,000
Provision for income taxes	14,203,000	20,300,000	45,486,000	59,809,000
Net Income	$33,468,000	$44,291,000	$114,124,000	$132,338,000
Earnings per common share:	'	'	'	'
Basic	$0.18	$0.24	$0.61	$0.71
Diluted	$0.18	$0.24	$0.61	$0.70
Cash dividends per common share	$0.09	$0.08	$0.25	$0.16
Average common shares outstanding:	'	'	'	'
Basic	184,985	187,096	186,683	186,840
Diluted	185,724	188,109	187,445	187,816

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net income	$33,468,000	$44,291,000	$114,124,000	$132,338,000
Other comprehensive income (loss):	'	'	'	'
Change in unrealized gain (loss) on securities available for sale	-1,460,000	3,144,000	25,902,000	-56,148,000
Tax effect and reclassification adjustment	552,000	-1,151,000	-9,295,000	20,206,000
Unrealized holding gains (losses) arising during period	-908,000	1,993,000	16,607,000	-35,942,000
Non-credit related unrealized gain on other-than-temporarily impaired debt securities	0	237,000	0	378,000
Tax effect	0	-87,000	0	-139,000
Reclassification adjustment for gains included in net income	0	150,000	0	239,000
Change in unrealized gain on cash flow hedges	6,329,000	1,309,000	13,902,000	15,795,000
Tax effect	-2,310,000	-478,000	-5,074,000	-5,765,000
Change in unrealized gain on cash flow hedges	4,019,000	831,000	8,828,000	10,030,000
Changes in postretirement benefit obligations	0	0	0	-26,000
Tax effect	0	0	0	9,000
Changes in postretirement benefit obligations, net of tax	0	0	0	-17,000
Total other comprehensive income (loss)	3,111,000	2,974,000	25,435,000	-25,690,000
Total comprehensive income	$36,579,000	$47,265,000	$139,559,000	$106,648,000

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash Flows from Operating Activities:	'	'
Net income	$114,124,000	$132,338,000
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation, amortization, and accretion	47,815,000	40,157,000
Provision for loan and lease losses	18,000,000	29,000,000
Stock compensation expense	3,819,000	2,266,000
Realized (gain) loss on available-for-sale securities, net	-3,285,000	51,000
Deferred income tax expense	43,281,000	49,433,000
Gain on sale of loans and leases	-9,732,000	-12,436,000
Gain on sale of foreclosed assets	-198,000	-519,000
(Gain) loss on sale of fixed assets	-168,000	428,000
Mortgage loans originated for sale	-338,413,000	-411,434,000
Proceeds from sale of mortgage loans originated for sale	333,166,000	437,937,000
Increase in cash surrender value of bank-owned life insurance	-4,826,000	-6,638,000
Decrease (increase) in accrued interest receivable	1,791,000	-1,411,000
Increase (decrease) in accrued interest payable	237,000	-129,000
(Decrease) increase in accrued expenses and taxes payable	-10,343,000	19,361,000
Other, net	-3,837,000	-25,515,000
Net cash provided by operating activities	191,431,000	252,889,000
Cash Flows from Investing Activities:	'	'
Net decrease in restricted short-term investments	6,106,000	32,560,000
Activity in available-for-sale securities:	'	'
Sales	42,000	33,765,000
Maturities, repayments, and calls	341,842,000	512,267,000
Purchases	-92,662,000	-522,871,000
Net decrease (increase) in restricted investment in bank stock	25,113,000	-8,353,000
Proceeds from sale of loans originated for investment	256,372,000	0
Net increase in loans and leases	-154,325,000	-549,855,000
Purchase of bank-owned life insurance	0	-6,050,000
Proceeds from bank-owned life insurance	4,947,000	13,539,000
Proceeds from sale of foreclosed assets	11,857,000	16,845,000
Additions to premises and equipment, net	-7,667,000	-12,360,000
Net cash provided by (used in) investing activities	391,625,000	-490,513,000
Cash Flows from Financing Activities:	'	'
Net increase in deposits	722,242,000	141,639,000
Net decrease in other short-term borrowings	-23,065,000	-129,121,000
Net decrease in short-term FHLB borrowings	-600,000,000	412,000,000
Repayment of long-term FHLB borrowings	-14,606,000	-16,231,000
Repayment of long-term debt	-93,530,000	-55,653,000
Proceeds from issuance of common stock	4,095,000	6,783,000
Purchases and retirement of common stock	-60,885,000	0
Purchase of treasury stock	-569,000	-68,000
Cash dividends paid	-46,877,000	-29,924,000
Net cash (used in) provided by financing activities	-113,195,000	329,425,000
Net change in cash and cash equivalents	469,861,000	91,801,000
Cash and cash equivalents at January 1	343,324,000	316,592,000
Cash and cash equivalents at September 30	813,185,000	408,393,000
Supplemental Disclosure of Cash Flow Information	'	'
Cash paid for interest on deposits and borrowings	70,448,000	77,765,000
Income tax refunds	-720,000	-22,440,000
Supplemental Schedule of Noncash Activities	'	'
Real estate acquired in settlement of loans	8,850,000	11,693,000
Securities purchased not settled	50,113,000	0
Purchase of common stock not settled	5,470,000	0
Capitalized servicing rights	$4,193,000	$1,014,000

Consolidated_Statements_of_Cha

Consolidated Statements of Changes in Shareholders' Equity (USD $)	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]
In Thousands, except Share data
Balance at Dec. 31, 2012	$2,595,909	$373,623	($1,850)	$1,645,958	$615,436	($37,258)
Balance, Shares at Dec. 31, 2012	186,811,642	'	'	'	'	'
Total comprehensive income	106,648	'	'	'	132,338	-25,690
Issuance of common stock and share-based awards under employee benefit plans (shares)	'	679,487	'	'	'	'
Issuance of common stock and share-based awards under employee benefit plans	6,783	1,359	'	5,424	'	'
Treasury stock purchased	-68	'	-68	'	'	'
Cash dividends paid on common stock	-29,924	'	'	'	-29,924	'
Balance at Sep. 30, 2013	2,679,348	374,982	-1,918	1,651,382	717,850	-62,948
Balance, shares at Sep. 30, 2013	187,491,129	'	'	'	'	'
Balance at Dec. 31, 2013	2,717,587	375,353	-2,531	1,652,116	744,215	-51,566
Balance, Shares at Dec. 31, 2013	187,676,711	'	'	'	'	'
Total comprehensive income	139,559	'	'	'	114,124	25,435
Issuance of common stock and share-based awards under employee benefit plans (shares)	'	463,943	'	'	'	'
Issuance of common stock and share-based awards under employee benefit plans	7,915	929	'	6,986	'	'
Retirement of common stock (Shares)	'	-6,461,833	'	'	'	'
Retirement of common stock	-66,355	-12,924	'	-53,431	'	'
Treasury stock purchased	-569	'	-569	'	'	'
Cash dividends paid on common stock	-46,877	'	'	'	-46,877	'
Balance at Sep. 30, 2014	$2,751,260	$363,358	($3,100)	$1,605,671	$811,462	($26,131)
Balance, shares at Sep. 30, 2014	181,678,821	'	'	'	'	'

Consolidated_Statements_of_Cha1

Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Cash dividends paid on common stock, per share	$0.09	$0.08	$0.25	$0.16

Summary_of_Significant_Account

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Summary of Significant Accounting Policies	'
	NOTE 1. Summary of Significant Accounting Policies
	The information contained in this report is unaudited.
	Basis of Presentation
	The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP") for interim financial information. Certain prior-year amounts have been reclassified to conform to current period. In the opinion of management, the information reflects all normal recurring adjustments necessary for a fair statement of results for the three and nine months ended September 30, 2014 and 2013. The year-end balance sheet data was derived from audited financial statements, but does not include all disclosures required by U.S. GAAP. Operating results for the three-month and nine-month periods ended September 30, 2014 are not necessarily indicative of the results that may be expected for the year ending December 31, 2014.
	The accounting policies of Susquehanna Bancshares, Inc. and Subsidiaries ("Susquehanna"), as applied in the consolidated interim financial statements presented herein, are substantially the same as those followed on an annual basis as presented on pages 78 through 85 of Susquehanna's Annual Report on Form 10-K for the fiscal year ended December 31, 2013.
	Consumer Lease Financing. Susquehanna originates financing leases on consumer vehicles. These leases are reported in the consolidated balance sheet under the loans and leases caption as a net amount, consisting of the aggregate of lease payments receivable and guaranteed residual values, less unearned income. Income is recognized in a manner which results in an approximate level yield over the lease term. Residual values for vehicle leases are guaranteed by a third party unrelated to either Susquehanna or the lessee.
	Loans and Leases Income Recognition. Interest income on loans and leases is computed using the effective interest method. Loan and lease origination fees and certain direct loan and lease origination costs are deferred, and the net amount is recognized as an adjustment to the yield on the related loans and leases over the contractual life of the loans and leases. In circumstances in which fees and costs substantially offset each other for a type or group of loans or leases, the fees and costs are recognized as earned or incurred.
	Loan and lease servicing fees are recognized over the contractual term of the loan or lease in relation to the timing of services performed.
	Common Stock Repurchases
	Treasury Stock Repurchases. Repurchases of Susquehanna common stock that are available for reissue are recorded at cost as Treasury stock and are a reduction to shareholders' equity.
	Repurchased and Retired. Repurchases of Susquehanna common stock that are retired and no longer available for reissue, are recorded at cost in which the reacquired shares reduce outstanding Common stock and Additional paid-in capital.
	Use of Estimates
	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported and contingent amounts of assets and liabilities as of the date of the balance sheet and reported amounts of revenues and expenses during the reporting periods. Actual results could differ significantly from those estimates. Material estimates that are particularly susceptible to significant change relate to the determination of the allowance for loan and lease losses; the fair value of financial instruments, such as loans, investment securities, and derivatives; measurement and assessment of goodwill and intangible assets; and, income tax assets, liabilities and expenses.
	Recently Adopted Accounting Guidance
	In February 2013, FASB issued ASU 2013-02, Comprehensive Income (Topic 220) – Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. This ASU requires entities to disclose information regarding reclassification adjustments from accumulated other comprehensive income in their financial statements in a single note or on the face of the financial statements. ASU 2013-02 is effective for interim and annual reporting periods beginning after December 15, 2012. The adoption of this guidance, in the first quarter of 2013, did not have a material impact on results of operations or financial condition, however did result in additional disclosures. For more information about these disclosures, refer to Note 8. Accumulated Other Comprehensive Income.
	In July 2013, FASB issued ASU 2013-10, Derivatives and Hedging (Topic 815) – Inclusion of the Fed Funds Effective Swap Rate (or Overnight Index Swap Rate) as a Benchmark Interest Rate for Hedge Accounting Purposes. This ASU permits the Fed Funds Effective Swap Rate to be used as a U.S. benchmark interest rate for hedge accounting purposes under Topic 815, in addition to U.S. Treasury interest rates and the London Interbank Offered Rate. The amendment also removes the restriction on using different benchmark rates for similar hedges. The adoption of this guidance, in the third quarter of 2013, did not have a material impact on results of operations, financial condition, or disclosures. For more information, refer to Note 13. Fair Value Disclosures.
	In July 2013, FASB issued ASU 2013-11, Income Taxes (Topic 740) – Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. This ASU provides clarifying guidance on the presentation of unrecognized tax benefits to better reflect the manner in which an entity would settle at the reporting date any additional income taxes that would result from the disallowance of a tax position when net operating loss carryforwards, similar tax losses, or tax credit carryforwards exist. ASU 2013-11 is effective for interim and annual reporting periods beginning after December 15, 2013. The adoption of this amendment, in the first quarter of 2014, did not have a material impact on results of operations or financial condition.
	Recently Issued Accounting Guidance
	In January 2014, FASB issued ASU 2014-01, Investments – Equity Method and Joint Ventures (Topic 323) – Accounting for Investments in Qualified Affordable Housing Projects. This ASU provides guidance on accounting for investments by a reporting entity in flow-through limited liability entities that manage or invest in affordable housing projects that qualify for the low-income housing tax credit. ASU 2014-01 is effective for interim and annual reporting periods beginning after December 15, 2014. The adoption of this amendment is not expected to have a material impact on the financial condition or results of operations.
	In January 2014, FASB issued ASU 2014-04, Receivables – Troubled Debt Restructurings by Creditors (Subtopic 310-40) – Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure. This ASU clarifies when a creditor should be considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan such that the loan should be derecognized and the real estate property recognized. ASU 2014-04 is effective for interim and annual reporting periods beginning after December 15, 2014. The adoption of this amendment is not expected to have a material impact on the financial condition or results of operations.
	In May 2014, FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). This guidance supersedes the revenue recognition requirements in Accounting Standards Codification Topic 605, Revenue Recognition, and most industry-specific guidance throughout the Accounting Standards Codification. The guidance requires an entity to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. This guidance is effective for interim and annual reporting periods beginning after December 15, 2016. Susquehanna is currently evaluating this amendment to determine the impact on financial condition and results of operations.
	In August 2014, FASB issued ASU 2014-14, Receivables – Troubled Debt Restructurings by Creditors (Subtopic 310-40) – Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure. This ASU provides guidance on classification of certain foreclosed mortgage loans held by creditors that are either fully or partially guaranteed under government programs. ASU 2014-14 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. The adoption of this amendment is not expected to have a material impact on the financial condition or results of operations.
	In August 2014, FASB issued ASU 2014-15, Presentation of Financial Statements – Going Concern (Subtopic 205-40) – Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern. This ASU provides guidance about management's responsibility to evaluate whether there is substantial doubt about an entity's ability to continue as a going concern and to provide related footnote disclosures. ASU 2014-15 is effective for the annual period ending after December 15, 2016, and for annual and interim periods thereafter. The adoption of this amendment is not expected to have a material impact on the financial condition or results of operations.

Investment_Securities

Investment Securities	9 Months Ended
	Sep. 30, 2014
Investment Securities [Abstract]	'
Investment Securities	'
	NOTE 2. Investment Securities
	The amortized cost and fair values of investment securities at September 30, 2014 and December 31, 2013 were as follows:
								Gross			Gross
					Amortized			Unrealized			Unrealized			Fair
	At September 30, 2014				Cost			Gains			Losses			Value
	Available-for-sale:
		U.S. Government agencies			$	93,712		$	135		$	131		$	93,716
		Obligations of states and political subdivisions				375,529			21,471			657			396,343
		Agency residential mortgage-backed securities				1,630,197			16,159			11,057			1,635,299
		Non-agency residential mortgage-backed securities				307			1			4			304
		Commercial mortgage-backed securities				5,736			104			3			5,837
		Other structured financial products				24,562			0			12,801			11,761
		Other debt securities				24,078			941			98			24,921
						2,154,121			38,811			24,751			2,168,181
		Other equity securities				24,577			745			888			24,434
	Total available-for-sale securities				$	2,178,698		$	39,556		$	25,639		$	2,192,615
								Gross			Gross
					Amortized			Unrealized			Unrealized			Fair
	At December 31, 2013				Cost			Gains			Losses			Value
	Available-for-sale:
		U.S. Government agencies			$	110,227		$	343		$	422		$	110,148
		Obligations of states and political subdivisions				389,199			13,386			4,075			398,510
		Agency residential mortgage-backed securities				1,786,133			12,163			20,104			1,778,192
		Non-agency residential mortgage-backed securities				572			1			8			565
		Commercial mortgage-backed securities				8,568			166			0			8,734
		Other structured financial products				25,038			0			13,741			11,297
		Other debt securities				43,156			1,487			557			44,086
						2,362,893			27,546			38,907			2,351,532
		Other equity securities				24,318			557			1,183			23,692
	Total available-for-sale securities				$	2,387,211		$	28,103		$	40,090		$	2,375,224
	At September 30, 2014 and December 31, 2013, investment securities with carrying values of $1,432,660 and $1,512,824, respectively, were pledged to secure public funds and for other purposes as required by law.
	The amortized cost and fair value of U.S. Government agencies, obligations of states and political subdivisions, agency and non-agency residential mortgage-backed securities, commercial mortgage-backed securities, other structured financial products, other debt securities, and residential and commercial mortgage-backed securities, at September 30, 2014 and December 31, 2013, by contractual maturity, are shown below. Actual maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
						September 30, 2014						December 31, 2013
						Amortized			Fair			Amortized			Fair
						Cost			Value			Cost			Value
		Securities available for sale:
			Within one year			$	33,572		$	34,014		$	8,870		$	9,005
			After one year but within five years				108,112			110,911			129,176			130,091
			After five years but within ten years				909,907			919,143			945,637			946,754
			After ten years				1,102,530			1,104,113			1,279,210			1,265,682
				Total		$	2,154,121		$	2,168,181		$	2,362,893		$	2,351,532
	Gross realized gains and gross realized losses on investment securities transactions are summarized below. These gains and losses were recognized using the specific identification method and were included in noninterest income.
				Available-for-sale Securities
				Three Months Ended September 30,						Nine Months Ended September 30,
				2014			2013			2014			2013
		Gross gains		$	0		$	2		$	3,364		$	435
		Gross losses			0			0			-79			-1
		Other-than-temporary impairment			0			0			0			-485
		Net gains		$	0		$	2		$	3,285		$	-51
	The following table presents Susquehanna's investments' gross unrealized losses and the corresponding fair values by investment category and length of time that the securities have been in a continuous unrealized loss position, at September 30, 2014 and December 31, 2013.
				Less than 12 Months						12 Months or More						Total
				Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
	30-Sep-14			Value			Losses			Value			Losses			Value		Losses
	U.S. Government agencies			$	36,477		$	83		$	1,952		$	48		$	38,429	$	131
	Obligations of states and political subdivisions				0			0			52,383			657			52,383		657
	Agency residential mortgage-backed securities				280,503			2,107			317,208			8,950			597,711		11,057
	Non-agency residential mortgage-backed securities				0			0			278			4			278		4
	Commercial mortgage-backed securities				1,946			3			0			0			1,946		3
	Other structured financial products				0			0			11,761			12,801			11,761		12,801
	Other debt securities				0			0			5,148			98			5,148		98
	Other equity securities				0			0			1,577			888			1,577		888
				$	318,926		$	2,193		$	390,307		$	23,446		$	709,233	$	25,639
				Less than 12 Months						12 Months or More						Total
			Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
31-Dec-13			Value			Losses			Value			Losses			Value		Losses
U.S. Government agencies			$	68,111		$	422		$	0		$	0		$	68,111	$	422
Obligations of states and political subdivisions				73,895			3,910			7,025			165			80,920		4,075
Agency residential mortgage-backed securities				1,030,987			20,104			0			0			1,030,987		20,104
Non-agency residential mortgage-backed securities				530			8			0			0			530		8
Other structured financial products				0			0			11,297			13,741			11,297		13,741
Other debt securities				0			0			6,476			557			6,476		557
Other equity securities				19,111			286			1,619			897			20,730		1,183
			$	1,192,634		$	24,730		$	26,417		$	15,360		$	1,219,051	$	40,090
Non-agency residential mortgage-backed securities. At September 30, 2014, Susquehanna held one security that had unrealized losses, but was not rated below investment grade. None of Susquehanna's non-agency residential mortgage-backed securities were backed by loans identified by the issuer at issuance as subprime or Alt-A collateral. Management has analyzed the collateral underlying these securities with respect to defaults, loan to collateral value ratios, current levels of subordination, and geographic concentrations and concluded that none of these securities are other-than-temporarily impaired.
Susquehanna recorded other-than-temporary impairment losses as presented in the following table:
Credit Losses on Non-agency Residential Mortgage-backed and Other Equity Securities for which a Portion of an
Other-than-temporary Impairment was Recognized in Other Comprehensive Income
				Three Months Ended
				September 30,
				2014						2013
							Equity						Equity
				RMBS			Securities			RMBS			Securities
Balance - beginning of period				$	0		$	609		$	1,026		$	609
Additions:
	Amount related to credit losses for which an other-than-
		temporary impairment was not previously recognized			0			0			0			0
	Additional amount related to credit losses for which an other-than-
		temporary impairment was previously recognized			0			0			0			0
Deductions:
	Realized losses				0			0			26			0
Balance - end of period				$	0		$	609		$	1,000		$	609
				Nine Months Ended
				September 30,
				2014						2013
							Equity						Equity
				RMBS			Securities			RMBS			Securities
Balance - beginning of period				$	0		$	609		$	768		$	512
Additions:
	Amount related to credit losses for which an other-than-
		temporary impairment was not previously recognized			0			0			325			0
	Additional amount related to credit losses for which an other-than-
		temporary impairment was previously recognized			0			0			63			97
Deductions:
	Realized losses				0			0			156			0
Balance - end of period				$	0		$	609		$	1,000		$	609
Susquehanna estimated the portion of loss attributable to credit using a discounted cash flow model. Susquehanna, in conjunction with a third-party financial advisory firm, assisted with the development of critical assumptions including the expected cash flows of the underlying collateral of the non-agency residential mortgage-backed securities using internal credit risk, interest rate risk, and prepayment risk models that incorporated management's best estimate of current key assumptions, such as default rates, loss severity, and prepayment rates. Assumptions used can vary widely from loan to loan and are influenced by such factors as loan interest rate, geographical location of the borrower, borrower characteristics, and collateral type. The distribution of underlying cash flows is determined in accordance with the security's terms. Expected principal and interest cash flows on an other-than-temporarily impaired debt (“OTTI”) security are discounted using the effective yield of that debt security.
Based on the expected cash flows derived from the model, Susquehanna expected to recover the $321 unrealized loss in accumulated other comprehensive loss at September 30, 2013. Significant assumptions used in the valuation of these other-than-temporarily impaired securities were as follows:
			Weighted-average (%)
			September 30,
			2014 (1)		2013
		Conditional repayment rate (2)	N/A		10.60%
		Loss severity (3)	N/A		37.80%
		Conditional default rate (4)	N/A		3.60%
-1	Not applicable as the related securities were sold during 2013.
-2	Conditional repayment rate represents a rate equal to the proportion of principal balance paid off voluntarily over a certain period of time on an annualized basis.
-3	Loss severity rates are projected by considering collateral characteristics such as current loan-to-value, original creditworthiness of borrowers (FICO score) and geographic concentration.
-4	Conditional default rate is an annualized rate of default on a group of mortgages, and represents the percentage of outstanding principal balances in the pool that are in default, which typically equates to the borrower being past due 60 days, 90 days, or possibly already in the foreclosure process.
Management provides input and monitors the third party valuation process of the non-agency residential mortgage-backed securities. A detailed review of the critical assumptions and inputs is performed by Susquehanna's Corporate Investment Committee (“CIC”). Key assumptions reviewed by the CIC include prepayment assumptions, default rates, loss severity, bond waterfall payments, and the discount rate. Additionally, available market indications of similar securities are provided by Susquehanna to the third party and are given a significant weighting by the third party.
Other structured financial products. Susquehanna's structured financial product investments are comprised of four pooled trust preferred securities which have an aggregate unrealized loss of $12,801 and $13,605 at September 30, 2014 and 2013, respectively. All of these securities are below investment grade but are of a more senior tranche of the specific issue. Susquehanna has contracted with a third party financial advisory firm (“third party firm”) to assist in its valuation and other-than-temporary impairment analysis of its structured financial product investments. In addition to the valuation work performed by a third party firm which Susquehanna utilizes to support its valuation and other-than-temporary-impairment analysis, management of Susquehanna considered Section 619 of the Dodd-Frank Act (commonly referred to as the “Volcker Rule”). Specifically, Susquehanna considered the interim final rule published by federal regulatory agencies on January 14, 2014, which indicated Susquehanna's trust preferred securities will remain permissible holdings under the Volcker Rule.
Management has assisted with the development of, and performed a detailed review of the critical assumptions. The review of the inputs for the valuation of the pooled trust preferred securities is performed by the CIC. Key aspects reviewed by CIC include the detail on nonperforming financial institutions within the pools of trust preferred securities, the probability of default of the underlying institutions within the pools, the discount rate, trades of similar securities and indexes, and the weighting given to market indications. Susquehanna management believes that the valuation analysis and methodology reasonably supports the value and projected performance of the specific trust preferred securities. Management believes this valuation methodology presents an appropriate approach in the determination of other-than-temporary impairment charges in accordance with GAAP.
Using publicly available financial information, the third party firm's valuation analysis compares the present value of the expected base cash flows with the amortized cost basis of the trust preferred securities to determine whether Susquehanna expects to receive the entire amortized cost basis of such securities. To make this comparison, the third party firm evaluates two scenarios consisting of three phases each. The two scenarios are: (1) the first dollar loss scenario, and, (2) the expected or forecasted scenario. The three phases associated with each scenario are production of cash flows, application of the cash flows to the percent owned, and assessment of any other-than-temporary impairment.
To determine expected cash flows, the valuation analysis considers credit default rates, call options and deferrals, waterfall structure, and covenants relating to the trust preferred securities. The trust indenture documentation and the trustee reports for each specific trust preferred security issuance provides information regarding deferral rights, call options, various triggers, (including over-collateralization triggers), and waterfall structure, which management believes is essential in determining projected base cash flows. The third party firm determines short-term default risk using ratios, including the Texas ratio, that relate to the issuers, capitalization, asset quality, profitability, and liquidity. To determine longer term default probabilities, the third party firm uses an internal scoring approach that relies on key historical financial performance ratios. Management believes that future cash flows for these securities are reasonably developed and supported.
If a collateral security is in default at the assessment date, a recovery rate specific to the issuer of the collateral security is incorporated into the expected cash flows with a twenty-four month lag in timing of receipt of those expected cash flows. The third party firm calculates a terminal default rate based upon certain key financial ratios of the active issuers in the security to all FDIC insured bank institutions. The active issuers of the collateral securities are summarized as a weighted average based on issue size according to status of deferral and default assumption. To enhance the analysis, the third party firm calculates the standard deviation across the issuers for each ratio and removes any issuer that falls more than three standard deviations above or below the average for that ratio. No recovery is incorporated into the expected cash flows for any issuers that exceed the terminal default rate. For issuers currently making interest payments and for those currently deferring interest payments, Susquehanna makes an estimate using publicly available financial information as to the likelihood and timing of any default, after which the estimated cash flow reflects a recovery rate specific to the issuer. Issuers of collateral securities that are currently deferring interest payments and not expected to default are assumed to continue to defer interest payments for twenty quarters, the full contractually permitted deferral, from the period of initial deferral.
In considering the amount and timing of expected cash flows on the pooled trust preferred securities, management considers the right of the issuers of the securities underlying the pooled trust preferred securities to call those collateral securities. Management assesses any projected exercise of the call option, incorporating changes in economic and market conditions and the impact of any change in timing of expected cash flows in the measurement of fair value and other-than-temporary impairment.
The discount rate applied to the projected cash flows for the specific class is calculated using a spread to the current swap curve. The swap curve gives a market participant perspective of the term structure of interest rates and on credit spreads. The determination of the discount rate used in Susquehanna's valuation is based upon the referenced swap curve plus an additional credit spread based upon the credit rating of the class. Lower rated classes would have a wider implied credit spread. These multiple discount rates are then applied to the estimated cash flows in determining the estimated present value.
	The present value of the expected cash flows for Susquehanna’s specific class and subordinate classes, as well as additional
information about the pooled trust preferred securities, are included in the following tables.
As of September 30, 2014			Pooled Trust #1			Pooled Trust #2			Pooled Trust #3			Pooled Trust #4
Recorded investment			$	3,000		$	6,981		$	7,831		$	6,750
Fair value				1,308			3,967			4,428			2,058
Unrealized loss			$	-1,692		$	-3,014		$	-3,403		$	-4,692
Class			B			B			B			A2L
Class face value			$	35,000		$	58,375		$	86,900		$	45,500
Present value of expected cash flows
	for class noted above and all
	subordinated classes (1)		$	180,717		$	196,316		$	325,424		$	167,181
Lowest credit rating assigned			D			B3			B1			Ca
Original collateral			$	623,984		$	501,470		$	700,535		$	487,680
Performing collateral				384,342			318,814			478,061			268,100
Actual defaults				40,400			55,580			29,000			83,500
Actual deferrals				28,500			75,430			70,650			70,580
Projected future defaults				36,582			42,626			44,731			26,711
Actual defaults as a % of original
	collateral			6.50%			11.10%			4.10%			17.10%
Actual deferrals as a % of original
	collateral (2)			4.60%			15.00%			10.10%			14.50%
Actual defaults and deferrals as a % of
	original collateral			11.10%			26.10%			14.20%			31.60%
Projected future defaults as a % of
	original collateral (3)			5.90%			8.50%			6.40%			5.50%
Actual institutions deferring and
	defaulted as a % of total institutions			15.60%			31.50%			20.60%			38.10%
Projected future defaults as a % of
	performing collateral plus
	deferrals			8.90%			10.80%			8.20%			7.90%
As of September 30, 2013			Pooled Trust #1			Pooled Trust #2			Pooled Trust #3			Pooled Trust #4
Recorded investment			$	3,000		$	7,183		$	8,116		$	6,750
Fair value				1,400			3,654			4,081			2,309
Unrealized loss			$	-1,600		$	-3,529		$	-4,035		$	-4,441
Class			B			B			B			A2L
Class face value			$	35,000		$	59,409		$	89,268		$	45,500
Present value of expected cash flows
	for class noted above and all
	subordinated classes (1)		$	172,482		$	194,406		$	305,868		$	153,932
Lowest credit rating assigned			D			Ca			Ca			Ca
Original collateral			$	623,984		$	501,470		$	700,535		$	487,680
Performing collateral				393,342			299,934			472,261			273,488
Actual defaults				41,600			51,580			44,000			75,357
Actual deferrals				34,300			98,310			93,650			93,080
Projected future defaults				41,274			45,777			49,510			42,236
Actual defaults as a % of original
	collateral			6.70%			10.30%			6.30%			15.50%
Actual deferrals as a % of original
	collateral (2)			5.50%			19.60%			13.40%			19.10%
Actual defaults and deferrals as a % of
	original collateral			12.20%			29.90%			19.70%			34.60%
Projected future defaults as a % of
	original collateral (3)			6.60%			9.10%			7.10%			8.70%
Actual institutions deferring and
	defaulted as a % of total institutions			16.90%			34.50%			24.60%			40.90%
Projected future defaults as a % of
	performing collateral plus
	deferrals			9.70%			11.50%			8.70%			11.50%
-1	Susquehanna determines whether it expects to recover the entire amortized cost basis by comparing the present value of the expected cash flows to be collected with the amortized cost basis. As of September 30, 2014 and 2013, the present value of the current estimated cash flows is equal to or greater than the book value of the trust preferred securities held. Consequently, there is no credit-related other-than-temporary impairment required to be recognized.
-2	Includes current interest deferrals for the quarter for those institutions deferring as of the date of the assessment of the other-than-temporary impairment. Current deferrals are assumed to continue for twenty quarters, the full contractually permitted deferral period, if the institutions are not projected to default prior to that time.
-3	Includes those institutions that are performing but are not projected to continue to perform and includes those institutions that are currently deferring interest that are projected to default, based upon third-party proprietary valuation methodology used to determine future defaults. Creditworthiness of each underlying issue in the collateralized debt obligation is determined using publicly available data.

Loans_and_Leases

Loans and Leases	9 Months Ended
	Sep. 30, 2014
Loans and Leases Receivable Disclosure [Abstract]	'
Loans and Leases	'
	NOTE 3. Loans and Leases
	Originated loans and leases is defined to exclude loans purchased in business combinations since September 30, 2011, and purchased loans and leases is defined to include those loans and leases excluded from the definition of originated loans.
	At June 30, 2014, Susquehanna reclassified approximately $265.0 million of indirect auto loans from held for investment to held for sale. The loans were transferred to held for sale at their amortized cost basis on the date of transfer and were measured at the lower of their amortized cost or fair value until the loans were securitized and sold.
	In conjunction with transferring the loans to held for sale, Susquehanna reclassified $1,236 from the allowance for loan loss and reflected this as a reduction in the cost basis of the reclassified loans, which is evident in the allowance roll-forward in Note 4. Allowance for Loan and Lease Losses. Additionally, all held for sale loans are included in the consumer category in the loan note tables and were current and accruing at June 30, 2014.
	On August 14, 2014, Susquehanna sold the reclassified loans for cash proceeds of $256.4 million and a servicing asset of $2.0 million. Susquehanna did not acquire any of the notes or the equity certificates issued by the securitization trust formed for the transaction.
	Loans and Leases, Net of Deferred Costs and Fees
						September 30,			December 31,
						2014			2013
		Commercial, financial, and agricultural				$	2,362,201		$	2,394,847
		Real estate - construction					817,492			735,877
		Real estate secured - residential					4,172,943			4,204,430
		Real estate secured - commercial					4,016,635			4,068,816
		Consumer					730,687			953,000
		Leases					1,325,763			1,219,116
				Total loans and leases		$	13,425,721		$	13,576,086
		Originated loans and leases				$	11,993,169		$	11,930,946
		Purchased loans and leases					1,432,552			1,645,140
				Total loans and leases		$	13,425,721		$	13,576,086
		Nonaccrual loans and leases				$	109,506		$	100,815
		Loans and leases contractually past due 90 days
			and still accruing				10,303			9,757
		Troubled debt restructurings					42,418			72,133
		Deferred origination costs, net of fees					13,943			21,216
		All overdrawn deposit accounts, reclassified
			as loans and evaluated for collectability				2,483			2,918
		A summary of our net investment in direct lease financing is presented below.
	Net Investment in Direct Financing Leases
							September 30,			December 31,
							2014			2013
			Minimum lease payments receivable				$	666,191		$	667,365
			Estimated guaranteed residual value of leases					742,443			634,875
			Unearned income under lease contracts					-82,871			-83,124
					Total leases		$	1,325,763		$	1,219,116
	Susquehanna monitors the credit quality of its commercial loan portfolio using internal risk ratings. These risk ratings are consistent with established regulatory guidance. Loans with a Pass rating represent those not considered a problem credit. Special mention loans are those that have a potential weakness deserving management's careful attention. Substandard loans are those where a well-defined weakness has been identified that may put the complete receipt of contractual cash flows at risk. Substandard loans are placed in nonaccrual status when Susquehanna believes it is no longer probable it will collect all contractual cash flows.
	Susquehanna reviews the loan gradings on an annual basis or at any time management becomes aware of the potential for not collecting all contractual cash flows. Significant credits with ratings of special mention or substandard, and associated with a relationship greater than $5.0 million, are reviewed quarterly by management.
	Susquehanna monitors the credit quality of its retail loan portfolio based primarily on delinquency status, which is the primary factor considered in determining whether a retail loan should be classified as nonaccrual.
		The following tables present Susquehanna's credit quality indicators by internally assigned grading and by payment activity at
	September 30, 2014 and December 31, 2013.
	Credit Quality Indicators, at September 30, 2014
		Commercial Credit Exposure
			Credit-risk Profile by Internally Assigned Grade
											Real Estate -			Total
								Real Estate -			Secured -			Commercial
					Commercial			Construction (1)			Commercial (2)			Credit Exposure
	Originated loans and leases
		Grade:
			Pass (3)		$	2,136,043		$	590,503		$	3,696,591		$	6,423,137
			Special mention (4)			49,338			27,060			155,342			231,740
			Substandard (5)			64,486			28,867			172,363			265,716
				Total	$	2,249,867		$	646,430		$	4,024,296		$	6,920,593
	Purchased loans and leases
		Grade:
			Pass (3)		$	95,907		$	21,069		$	658,615		$	775,591
			Special mention (4)			10,608			20,394			63,657			94,659
			Substandard (5)			5,819			11,024			101,072			117,915
				Total	$	112,334		$	52,487		$	823,344		$	988,165
	Total loans and leases
		Grade:
			Pass (3)		$	2,231,950		$	611,572		$	4,355,206		$	7,198,728
			Special mention (4)			59,946			47,454			218,999			326,399
			Substandard (5)			70,305			39,891			273,435			383,631
				Total	$	2,362,201		$	698,917		$	4,847,640		$	7,908,758
		Other Credit Exposure
		Credit-risk Profile based on Payment Activity
				Real Estate -
				Secured -									Total Other
				Residential			Consumer			Leases			Credit Exposure
Originated loans and leases
	Performing			$	3,003,259		$	725,254		$	1,324,733		$	5,053,246
	Nonperforming (6)				18,066			234			1,030			19,330
		Total		$	3,021,325		$	725,488		$	1,325,763		$	5,072,576
Purchased loans and leases
	Performing			$	429,184		$	5,194		$	0		$	434,378
	Nonperforming (6)				10,004			5			0			10,009
		Total		$	439,188		$	5,199		$	0		$	444,387
Total loans and leases
	Performing			$	3,432,443		$	730,448		$	1,324,733		$	5,487,624
	Nonperforming (6)				28,070			239			1,030			29,339
		Total		$	3,460,513		$	730,687		$	1,325,763		$	5,516,963
Credit Quality Indicators, at December 31, 2013
	Commercial Credit Exposure
		Credit-risk Profile by Internally Assigned Grade
										Real Estate -			Total
							Real Estate -			Secured -			Commercial
				Commercial			Construction (1)			Commercial (2)			Credit Exposure
Originated loans and leases
	Grade:
		Pass (3)		$	2,133,884		$	478,097		$	3,658,875		$	6,270,856
		Special mention (4)			75,162			33,907			168,464			277,533
		Substandard (5)			60,168			30,583			194,799			285,550
			Total	$	2,269,214		$	542,587		$	4,022,138		$	6,833,939
Purchased loans and leases
	Grade:
		Pass (3)		$	108,898		$	25,070		$	750,241		$	884,209
		Special mention (4)			4,220			19,811			62,208			86,239
		Substandard (5)			12,515			22,247			130,408			165,170
			Total	$	125,633		$	67,128		$	942,857		$	1,135,618
Total loans and leases
	Grade:
		Pass (3)		$	2,242,782		$	503,167		$	4,409,116		$	7,155,065
		Special mention (4)			79,382			53,718			230,672			363,772
		Substandard (5)			72,683			52,830			325,207			450,720
			Total	$	2,394,847		$	609,715		$	4,964,995		$	7,969,557
	Other Credit Exposure
		Credit-risk Profile based on Payment Activity
				Real Estate -
				Secured -									Total Other
				Residential			Consumer			Leases			Credit Exposure
Originated loans and leases
	Performing			$	2,914,547		$	945,379		$	1,217,629		$	5,077,555
	Nonperforming (6)				16,937			1,028			1,487			19,452
		Total		$	2,931,484		$	946,407		$	1,219,116		$	5,097,007
Purchased loans and leases
	Performing			$	491,922		$	6,591		$	0		$	498,513
	Nonperforming (6)				11,007			2			0			11,009
		Total		$	502,929		$	6,593		$	0		$	509,522
Total loans and leases
	Performing			$	3,406,469		$	951,970		$	1,217,629		$	5,576,068
	Nonperforming (6)				27,944			1,030			1,487			30,461
		Total		$	3,434,413		$	953,000		$	1,219,116		$	5,606,529
-1	Includes only construction loans granted to commercial customers. Construction loans for individuals are included in Real Estate – Secured – Residential, below.
-2	Includes loans obtained for commercial purposes that are also secured by residential real estate.
-3	Includes loans identified as having acceptable risk, which are loans for which the possibility of loss is considered unlikely.
-4	Includes loans considered potentially weak; however, no loss of principal or interest is anticipated.
-5	Includes loans that are inadequately protected by the current net-worth and paying capacity of the borrower or by the collateral pledged, if any. Loss of principal or interest is considered reasonably possible or likely.
-6	Includes loans that are on nonaccrual status or past due ninety days or more.
	The following tables detail the age analysis of Susquehanna's past due financing receivables as of September 30, 2014 and December 31, 2013.
Age Analysis of Past Due Financing Receivables, as of September 30, 2014
	Financing Receivables that are Accruing
																	Total
		30-59 Days			60-89 Days			90 Days			Total						Financing
		Past Due			Past Due			and Greater			Past Due			Current			Receivables
Commercial		$	2,157		$	974		$	65		$	3,196		$	2,335,884		$	2,339,080
Real estate - construction			2,600			87			0			2,687			807,580			810,267
Real estate secured - residential			7,866			4,692			9,170			21,728			4,127,562			4,149,290
Real estate secured - commercial			3,728			1,218			822			5,768			3,956,383			3,962,151
Consumer			4,555			1,407			199			6,161			724,486			730,647
Leases			817			117			47			981			1,323,799			1,324,780
	Total	$	21,723		$	8,495		$	10,303		$	40,521		$	13,275,694		$	13,316,215
Originated loans and leases		$	19,146		$	7,398		$	5,565		$	32,109		$	11,868,687		$	11,900,796
Purchased loans and leases			2,577			1,097			4,738			8,412			1,407,007			1,415,419
	Total	$	21,723		$	8,495		$	10,303		$	40,521		$	13,275,694		$	13,316,215
	Financing Receivables that are Nonaccruing
																	Total
		30-59 Days			60-89 Days			90 Days			Total						Financing
		Past Due			Past Due			and Greater			Past Due			Current			Receivables
Commercial		$	4,235		$	708		$	10,090		$	15,033		$	8,088		$	23,121
Real estate - construction			0			87			3,675			3,762			3,463			7,225
Real estate secured - residential			512			472			15,734			16,718			6,935			23,653
Real estate secured - commercial			1,206			909			34,029			36,144			18,340			54,484
Consumer			0			0			0			0			40			40
Leases			0			85			30			115			868			983
	Total	$	5,953		$	2,261		$	63,558		$	71,772		$	37,734		$	109,506
Originated loans and leases		$	5,658		$	2,131		$	51,740		$	59,529		$	32,844		$	92,373
Purchased loans and leases			295			130			11,818			12,243			4,890			17,133
	Total	$	5,953		$	2,261		$	63,558		$	71,772		$	37,734		$	109,506
Age Analysis of Past Due Financing Receivables, as of December 31, 2013
	Financing Receivables that are Accruing
																	Total
		30-59 Days			60-89 Days			90 Days			Total						Financing
		Past Due			Past Due			and Greater			Past Due			Current			Receivables
Commercial		$	3,640		$	518		$	127		$	4,285		$	2,373,735		$	2,378,020
Real estate - construction			1,631			903			418			2,952			719,695			722,647
Real estate secured - residential			27,441			6,223			7,274			40,938			4,140,127			4,181,065
Real estate secured - commercial			11,583			1,840			667			14,090			4,008,579			4,022,669
Consumer			8,664			1,537			983			11,184			941,769			952,953
Leases			4,275			368			288			4,931			1,212,986			1,217,917
	Total	$	57,234		$	11,389		$	9,757		$	78,380		$	13,396,891		$	13,475,271
Originated loans and leases		$	46,031		$	9,381		$	7,302		$	62,714		$	11,787,333		$	11,850,047
Purchased loans and leases			11,203			2,008			2,455			15,666			1,609,558			1,625,224
	Total	$	57,234		$	11,389		$	9,757		$	78,380		$	13,396,891		$	13,475,271
	Financing Receivables that are Nonaccruing
																	Total
		30-59 Days			60-89 Days			90 Days			Total						Financing
		Past Due			Past Due			and Greater			Past Due			Current			Receivables
Commercial		$	4,832		$	855		$	4,850		$	10,537		$	6,290		$	16,827
Real estate - construction			2,176			788			5,320			8,284			4,946			13,230
Real estate secured - residential			609			497			16,518			17,624			5,741			23,365
Real estate secured - commercial			1,320			3,551			19,952			24,823			21,324			46,147
Consumer			0			0			0			0			47			47
Leases			0			199			148			347			852			1,199
	Total	$	8,937		$	5,890		$	46,788		$	61,615		$	39,200		$	100,815
Originated loans and leases		$	8,205		$	3,806		$	39,553		$	51,564		$	29,335		$	80,899
Purchased loans and leases			732			2,084			7,235			10,051			9,865			19,916
	Total	$	8,937		$	5,890		$	46,788		$	61,615		$	39,200		$	100,815
The following tables provide information about Susquehanna's impaired loans, including principal balance, recorded investment, and related specific allowance amounts at the dates indicated. Loans with no specific allowance for loan losses have adequate collateral securing their carrying value and in some circumstances have been charged down to their current carrying value based on the fair value of the collateral less selling costs.
Impaired Loans at September 30, 2014
																Average
							Recorded									Recorded
				Unpaid			Investment						Related			Investment			Interest
				Principal			in Impaired			Related			Specific			in Impaired			Income
				Balance			Loans			Charge-offs			Allowance			Loans (2)			Recognized
Impaired loans without a related reserve:
	Commercial, financial, and agricultural			$	16,536		$	13,622		$	2,914					$	13,666		$	152
	Real estate - construction				8,113			7,514			599						8,220			73
	Real estate secured - residential				21,582			21,408			174						17,743			232
	Real estate secured - commercial				128,593			105,768			22,825						87,473			1,373
	Consumer				0			0			0						0			0
		Total impaired loans without a
			related reserve		174,824			148,312	-1		26,512						127,102			1,830
Impaired loans with a related reserve:
	Commercial, financial, and agricultural				13,156			13,156			0		$	6,116			13,073			162
	Real estate - construction				8,173			3,136			5,037			655			3,330			55
	Real estate secured - residential				23,818			22,397			1,421			3,209			5,355			280
	Real estate secured - commercial				30,931			20,095			10,836			2,300			26,591			497
	Consumer				1,079			1,051			28			114			33			28
		Total impaired loans with a
			related reserve		77,157			59,835			17,322			12,394			48,382			1,022
Total impaired loans:
	Commercial, financial, and agricultural				29,692			26,778			2,914			6,116			26,739			314
	Real estate - construction				16,286			10,650			5,636			655			11,550			128
	Real estate secured - residential				45,400			43,805			1,595			3,209			23,098			512
	Real estate secured - commercial				159,524			125,863			33,661			2,300			114,064			1,870
	Consumer				1,079			1,051			28			114			33			28
			Total impaired loans	$	251,981		$	208,147		$	43,834		$	12,394		$	175,484		$	2,852
Impaired loans without a related reserve:
	Originated loans and leases			$	70,279		$	46,640		$	23,639					$	26,627		$	455
	Purchased loans and leases				104,545			101,672			2,873						100,475			1,375
		Total impaired loans without a
			related reserve		174,824			148,312			26,512						127,102			1,830
Impaired loans with a related reserve:
	Originated loans and leases				71,261			54,672			16,589		$	10,780			45,605			969
	Purchased loans and leases				5,896			5,163			733			1,614			2,777			53
		Total impaired loans with a
			related reserve		77,157			59,835			17,322			12,394			48,382			1,022
Total impaired loans:
	Originated loans and leases				141,540			101,312			40,228			10,780			72,232			1,424
	Purchased loans and leases (3)				110,441			106,835			3,606			1,614			103,252			1,428
			Total impaired loans	$	251,981		$	208,147		$	43,834		$	12,394		$	175,484		$	2,852
-1	$34,632 of the $148,312 total impaired loans without a related reserve represents loans that had been written down to the fair value of the underlying collateral adjusted for selling costs through direct charge-offs of $26,512.
-2	Average recorded investment in impaired loans is calculated on a quarterly basis using daily balances.
-3	$5,163 of the $106,835 purchased impaired loans were subsequently impaired after being acquired.
Impaired Loans at December 31, 2013
																Average
							Recorded									Recorded
				Unpaid			Investment						Related			Investment			Interest
				Principal			in Impaired			Related			Specific			in Impaired			Income
				Balance			Loans			Charge-offs			Allowance			Loans (2)			Recognized
Impaired loans without a related reserve:
	Commercial, financial, and agricultural			$	31,196		$	28,034		$	3,162					$	29,316		$	390
	Real estate - construction				17,851			14,215			3,636						14,715			140
	Real estate secured - residential				28,308			27,645			663						27,800			297
	Real estate secured - commercial				143,664			125,139			18,525						125,003			2,076
	Consumer				0			0			0						14			0
		Total impaired loans without a
			related reserve		221,019			195,033	-1		25,986						196,848			2,903
Impaired loans with a related reserve:
	Commercial, financial, and agricultural				6,864			5,879			985		$	3,008			5,893			154
	Real estate - construction				15,202			7,288			7,914			1,819			5,831			228
	Real estate secured - residential				37,499			35,153			2,346			4,753			35,273			554
	Real estate secured - commercial				27,238			17,529			9,709			3,827			16,546			325
	Consumer				1,992			1,992			0			218			2,042			56
		Total impaired loans with a
			related reserve		88,795			67,841			20,954			13,625			65,585			1,317
Total impaired loans:
	Commercial, financial, and agricultural				38,060			33,913			4,147			3,008			35,209			544
	Real estate - construction				33,053			21,503			11,550			1,819			20,546			368
	Real estate secured - residential				65,807			62,798			3,009			4,753			63,073			851
	Real estate secured - commercial				170,902			142,668			28,234			3,827			141,549			2,401
	Consumer				1,992			1,992			0			218			2,056			56
			Total impaired loans	$	309,814		$	262,874		$	46,940		$	13,625		$	262,433		$	4,220
Impaired loans without a related reserve:
	Originated loans and leases			$	88,900		$	66,086		$	22,814					$	65,341		$	749
	Purchased loans and leases				132,119			128,947			3,172						131,507			2,154
		Total impaired loans without a
			related reserve		221,019			195,033			25,986						196,848			2,903
Impaired loans with a related reserve:
	Originated loans and leases				78,015			58,343			19,672		$	11,612			55,881			1,172
	Purchased loans and leases				10,780			9,498			1,282			2,013			9,704			145
		Total impaired loans with a
			related reserve		88,795			67,841			20,954			13,625			65,585			1,317
Total impaired loans:
	Originated loans and leases				166,915			124,429			42,486			11,612			121,222			1,921
	Purchased loans and leases (3)				142,899			138,445			4,454			2,013			141,211			2,299
			Total impaired loans	$	309,814		$	262,874		$	46,940		$	13,625		$	262,433		$	4,220
-1	$43,363 of the $195,033 total impaired loans without a related reserve represents loans that had been written down to the fair value of the underlying collateral adjusted for selling costs through direct charge-offs of $25,986.
-2	Average recorded investment in impaired loans is calculated on a quarterly basis using daily balances.
-3	$9,498 of the $138,445 purchased impaired loans were subsequently impaired after being acquired.
	The following table presents Troubled Debt Restructurings (TDR's), by class segment:
				September 30,			December 31,
				2014			2013
		Commercial, financial, and agricultural		$	4,044		$	6,885
		Real estate - construction			319			615
		Real estate secured - residential			20,231			31,623
		Real estate secured - commercial			16,780			31,295
		Consumer			1,044			1,715
			Total performing TDRs		42,418			72,133
		Nonperforming TDRs (1)			19,522			22,676
			Total TDRs	$	61,940		$	94,809
		Performing TDRs			68%			76%
		Nonperforming TDRs			32%			24%
-1	These loans are included in the 90 day past due and nonaccrual categories.
	The following table provides detail of TDR balance and activity for the periods presented:
					Three months ended						Nine months ended
					September 30,						September 30,
					2014			2013			2014			2013
Performing TDRs, beginning of period					$	40,938		$	63,822		$	72,133		$	67,775
	New restructurings as TDRs					2,684			13,336			6,767			38,405
	Repayments and payoffs					-848			-830			-1,853			-4,080
	Charge-offs after restructuring					-26			-9			-455			-6,734
	Transfer to nonaccrual, past due 90 days or greater, nonperforming TDRs					-281			-5,407			-5,969			-11,449
	Transfer out of TDR status (1)					-49			-938			-28,204			-13,551
	Other, net					0			1			-1			-391	-2
Performing TDRs, end of period					$	42,418		$	69,975		$	42,418		$	69,975
Nonperforming TDRs (3), end of period					$	19,522		$	22,166		$	19,522		$	22,166
Performing TDRs						68%			76%			68%			76%
Nonperforming TDRs						32%			24%			32%			24%
-1	Loans that have performed in accordance with the renegotiated terms for a minimum of six consecutive months with payments and at the time of renegotiation the loan's interest rate represented a then current market interest rate for a loan of similar risk.
-2	Includes $203 transferred to Other Real Estate Owned in 2013.
-3	Included in Age Analysis of Past Due Financing Receivables.
The following tables present Susquehanna's loan modification activities that were considered troubled debt restructurings for the three and nine month periods ended September 30, 2014 and 2013.
					Recorded Investment
										Post-			Financial Effect of
							Pre-Modification			Modification			Modification
					Number of		Recorded			Recorded			Recorded
Three months ended September 30, 2014					Loans		Investment			Investment			Investment(1)			Interest (2)
Troubled Debt Restructurings
	Commercial, financial, and agricultural
		Bankruptcies and maturity date extensions			3		$	124		$	124		$	0		$	0
		Combination of modification types			0			0			0			0			0
	Real estate - construction
		Bankruptcies and maturity date extensions			0			0			0			0			0
		Combination of modification types			0			0			0			0			0
	Real estate secured - residential
		Bankruptcies and maturity date extensions			25			2,397			2,397			0			3
		Combination of modification types			0			0			0			0			0
	Real estate secured - commercial
		Bankruptcies and maturity date extensions			0			0			0			0			0
		Combination of modification types			0			0			0			0			0
	Consumer
		Bankruptcies and maturity date extensions			20			163			163			0			0
		Combination of modification types			0			0			0			0			0
	Total				48		$	2,684		$	2,684		$	0		$	3
Originated loans and leases					47		$	2,627		$	2,627		$	0		$	3
Purchased loans and leases					1			57			57			0			0
	Total				48		$	2,684		$	2,684		$	0		$	3
-1	Financial effects impacting the recorded investment include principal payments, advances, charge-offs, and capitalized past-due amounts.
-2	Represents the present value of interest rate concessions discounted at the effective rate of the original loan.
								Number of		Recorded
								Loans		Investment
Troubled Debt Restructurings that Subsequently
	Defaulted during the current period
		Commercial, financial, and agricultural						0		$	0
		Real estate - construction						0			0
		Real estate secured - residential						3			181
		Real estate secured - commercial						0			0
		Consumer						3			28
		Total						6		$	209
Originated loans and leases								6		$	209
Purchased loans and leases								0			0
		Total						6		$	209
					Recorded Investment
										Post-			Financial Effect of
							Pre-Modification			Modification			Modification
					Number of		Recorded			Recorded			Recorded
Three months ended September 30, 2013					Loans		Investment			Investment			Investment(1)			Interest (2)
Troubled Debt Restructurings
	Commercial, financial, and agricultural
		Bankruptcies and maturity date extensions			6		$	845		$	845		$	0		$	-6
		Combination of modification types			1			51			51			0			0
	Real estate - construction
		Bankruptcies and maturity date extensions			0			0			0			0			0
		Combination of modification types			0			0			0			0			0
	Real estate secured - residential
		Bankruptcies and maturity date extensions			37			3,715			3,715			0			0
		Combination of modification types			8			1,313			1,313			0			51
	Real estate secured - commercial
		Bankruptcies and maturity date extensions			7			7,066			7,066			0			0
		Combination of modification types			0			0			0			0			0
	Consumer
		Bankruptcies and maturity date extensions			42			320			320			0			0
		Combination of modification types			1			26			26			0			0
	Total				102		$	13,336		$	13,336		$	0		$	45
Originated loans and leases					99		$	12,962		$	12,962		$	0		$	66
Purchased loans and leases					3			374			374			0			-21
	Total				102		$	13,336		$	13,336		$	0		$	45
-1	Financial effects impacting the recorded investment include principal payments, advances, charge-offs, and capitalized past-due amounts.
-2	Represents the present value of interest rate concessions discounted at the effective rate of the original loan.
								Number of		Recorded
								Loans		Investment
Troubled Debt Restructurings that Subsequently
	Defaulted during the current period
		Commercial, financial, and agricultural						3		$	33
		Real estate - construction						1			117
		Real estate secured - residential						17			862
		Real estate secured - commercial						4			4,640
		Consumer						31			263
		Total						56		$	5,915
Originated loans and leases								53		$	5,849
Purchased loans and leases								3			66
		Total						56		$	5,915
				Recorded Investment
												Financial Effect of
						Pre-Modification			Post-Modification			Modification
				Number of		Recorded			Recorded			Recorded
Nine months ended September 30, 2014				Loans		Investment			Investment			Investment(1)			Interest (2)
Troubled Debt Restructurings
	Commercial, financial, and agricultural
		Bankruptcies and maturity date extensions		9		$	226		$	226		$	0		$	0
		Combination of modification types		0			0			0			0			0
	Real estate - construction
		Bankruptcies and maturity date extensions		0			0			0			0			0
		Combination of modification types		0			0			0			0			0
	Real estate secured - residential
		Bankruptcies and maturity date extensions		41			4,786			4,786			0			3
		Combination of modification types		7			1,100			1,100			0			-8
	Real estate secured - commercial
		Bankruptcies and maturity date extensions		0			0			0			0			0
		Combination of modification types		1			375			375			0			0
	Consumer
		Bankruptcies and maturity date extensions		37			280			280			5			0
		Combination of modification types		0			0			0			0			0
	Total			95		$	6,767		$	6,767		$	5		$	-5
Originated loans and leases				90		$	6,123		$	6,123		$	5		$	40
Purchased loans and leases				5			644			644			0			-45
	Total			95		$	6,767		$	6,767		$	5		$	-5
-1	Financial effects impacting the recorded investment include principal payments, advances, charge-offs, and capitalized past-due amounts.
-2	Represents the present value of interest rate concessions discounted at the effective rate of the original loan.
							Number of		Recorded
							Loans		Investment
Troubled Debt Restructurings that Subsequently
	Defaulted during the current period
		Commercial, financial, and agricultural					11		$	2,027
		Real estate - construction					0			0
		Real estate secured - residential					11			578
		Real estate secured - commercial					4			2,599
		Consumer					24			187
		Total					50		$	5,391
Originated loans and leases							46		$	2,745
Purchased loans and leases							4			2,646
		Total					50		$	5,391
				Recorded Investment
												Financial Effect of
						Pre-Modification			Post-Modification			Modification
				Number of		Recorded			Recorded			Recorded
Nine months ended September 30, 2013				Loans		Investment			Investment			Investment(1)			Interest (2)
Troubled Debt Restructurings
	Commercial, financial, and agricultural
		Bankruptcies and maturity date extensions		29		$	9,379		$	9,379		$	0		$	-6
		Combination of modification types		2			292			292			0			0
	Real estate - construction
		Bankruptcies and maturity date extensions		2			137			137			0			0
		Combination of modification types		0			0			0			0			0
	Real estate secured - residential
		Bankruptcies and maturity date extensions		136			12,038			12,038			0			0
		Combination of modification types		25			3,815			3,815			0			-21
	Real estate secured - commercial
		Bankruptcies and maturity date extensions		19			9,565			9,565			0			0
		Combination of modification types		1			1,436			1,436			0			-196
	Consumer
		Bankruptcies and maturity date extensions		192			1,717			1,717			0			0
		Combination of modification types		1			26			26			0			0
	Total			407		$	38,405		$	38,405		$	0		$	-223
Originated loans and leases				386		$	35,569		$	35,569		$	0		$	-159
Purchased loans and leases				21			2,836			2,836			0			-64
	Total			407		$	38,405		$	38,405		$	0		$	-223
-1	Financial effects impacting the recorded investment include principal payments, advances, charge-offs, and capitalized past-due amounts.
-2	Represents the present value of interest rate concessions discounted at the effective rate of the original loan.
							Number of		Recorded
							Loans		Investment
Troubled Debt Restructurings that Subsequently
	Defaulted during the current period
		Commercial, financial, and agricultural					15		$	7,334
		Real estate - construction					3			254
		Real estate secured - residential					30			2,152
		Real estate secured - commercial					7			5,087
		Consumer					64			468
		Total					119		$	15,295
Originated loans and leases							111		$	14,692
Purchased loans and leases							8			603
		Total					119		$	15,295
	The unpaid principal balance and the related carrying amount of acquired loans are as follows:
						September 30,			December 31,
						2014			2013
		Credit impaired purchased loans evaluated individually for
			incurred credit losses
				Unpaid principal balance		$	129,457		$	176,351
				Carrying amount			106,836			138,445
		Other purchased loans evaluated collectively for incurred credit
			losses
				Unpaid principal balance			1,322,877			1,509,870
				Carrying amount			1,325,716			1,506,695
		Total purchased loans
				Unpaid principal balance			1,452,334			1,686,221
				Carrying amount			1,432,552			1,645,140
	The changes in the accretable discount related to the purchased credit impaired loans are as follows:
			Three Months Ended						Nine Months Ended
			September 30,						September 30,
			2014			2013			2014			2013
	Balance - beginning of period		$	43,319		$	49,187		$	46,219		$	62,868
		Accretion recognized during the period		-2,309			-4,229			-8,042			-16,522
		Net reclassification from nonaccretable to accretable		0			1,481			2,833			93
	Balance - end of period		$	41,010		$	46,439		$	41,010		$	46,439

Allowance_For_Loan_Lease_Losse

Allowance For Loan & Lease Losses	9 Months Ended
	Sep. 30, 2014
Allowance For Loan And Lease Losses [Abstract]	'
Allowance For Loan And Lease Losses	'
	NOTE 4. Allowance for Loan and Lease Losses
	In establishing the allowance for credit losses, Susquehanna estimates losses attributable to specific impaired credits identified through the credit review processes and also estimates losses inherent in other loans and leases on a collective basis. For purposes of determining the level of the allowance for credit losses, Susquehanna evaluates its loan and lease portfolio by loan type. The losses provisioned for in Susquehanna's allowance for loan loss is determined through a loan by loan analysis of larger balance commercial and commercial real estate loans that show signs of credit deterioration and by applying loss factors to groups of loan balances based on loan type and management's classification of such loans under the Susquehanna's loan grading system, adjusted for qualitative considerations.  In determining the allowance for credit losses, Susquehanna utilizes an internal loan grading system for its commercial portfolio.  The internal loan gradings are monitored by Susquehanna's loan review department.  Additionally, loans that are part of a relationship of over $1.0 million and have a rating of substandard, special mention, and pass that are on the company's watch list, are reviewed on a quarterly basis at Susquehanna's Loan Quality Review Committee.  Factors considered at the Loan Quality Review meetings include the financial statements of the borrower, the borrower's global cash flow, guarantees, and underlying collateral valuations.
			An analysis of the allowance for loan and lease losses for the three and nine months ended September 30, 2014 and 2013 are presented in the following tables:
						Three Months Ended September 30, 2014
										Real Estate		Real Estate
								Real Estate -		Secured -		Secured -
						Commercial		Construction		Residential		Commercial		Consumer		Leases		Unallocated		Total
	Allowance for credit losses:
	Balance at July 1, 2014					$	41,401	$	18,180	$	21,376	$	46,952	$	1,276	$	13,875	$	1,423	$	144,483
		Charge-offs					-9,398		-1,038		-3,020		-5,144		-891		-1,478		0		-20,969
		Recoveries					1,329		262		471		1,317		277		700		0		4,356
		Transfer for loans designated as held for sale					0		0		0		0		0		0		0		0
		Provision					12,540		-3,606		2,264		-1,359		636		-228		-1,247		9,000
	Balance at September 30, 2014					$	45,872	$	13,798	$	21,091	$	41,766	$	1,298	$	12,869	$	176	$	136,870
						Nine Months Ended September 30, 2014
										Real Estate		Real Estate
								Real Estate -		Secured -		Secured -
						Commercial		Construction		Residential		Commercial		Consumer		Leases		Unallocated		Total
	Allowance for credit losses:
	Balance at January 1, 2014					$	40,590	$	26,189	$	24,076	$	48,261	$	2,266	$	15,259	$	967	$	157,608
		Charge-offs					-23,006		-1,668		-10,140		-8,828		-3,470		-3,199		0		-50,311
		Recoveries					4,481		1,440		2,342		2,137		988		1,421		0		12,809
		Transfer for loans designated as held for sale					0		0		0		0		-1,236		0		0		-1,236
		Provision					23,807		-12,163		4,813		196		2,750		-612		-791		18,000
	Balance at September 30, 2014					$	45,872	$	13,798	$	21,091	$	41,766	$	1,298	$	12,869	$	176	$	136,870
	Balance at September 30, 2014
		Individually evaluated for impairment:
				Originated loans and leases		$	6,089	$	656	$	2,076	$	1,845	$	114	$	0			$	10,780
				Purchased loans and leases			26		0		1,133		455		0		0				1,614
					Total	$	6,115	$	656	$	3,209	$	2,300	$	114	$	0			$	12,394
		Collectively evaluated for impairment:
				Originated loans and leases		$	39,757	$	13,142	$	17,882	$	39,466	$	1,184	$	12,869	$	176	$	124,476
				Purchased loans and leases			0		0		0		0		0		0		0		0
					Total	$	39,757	$	13,142	$	17,882	$	39,466	$	1,184	$	12,869	$	176	$	124,476
	Financing receivables:
	Balance at September 30, 2014					$	2,362,201	$	817,492	$	4,172,943	$	4,016,635	$	730,687	$	1,325,763			$	13,425,721
	Balance at September 30, 2014
		Individually evaluated for impairment:
				Originated loans and leases		$	20,435	$	3,307	$	23,689	$	52,832	$	1,049	$	0			$	101,312
				Purchased loans and leases			6,344		7,343		20,116		73,030		2		0				106,835
					Total	$	26,779	$	10,650	$	43,805	$	125,862	$	1,051	$	0			$	208,147
		Collectively evaluated for impairment:
				Originated loans and leases		$	2,209,028	$	761,491	$	3,577,869	$	3,293,267	$	724,439	$	1,325,763			$	11,891,857
				Purchased loans and leases			126,394		45,351		551,269		597,506		5,197		0				1,325,717
					Total	$	2,335,422	$	806,842	$	4,129,138	$	3,890,773	$	729,636	$	1,325,763			$	13,217,574
						Three Months Ended September 30, 2013
										Real Estate		Real Estate
								Real Estate -		Secured -		Secured -
						Commercial		Construction		Residential		Commercial		Consumer		Leases		Unallocated		Total
	Allowance for credit losses:
	Balance at July 1, 2013					$	30,237	$	23,568	$	37,716	$	68,827	$	3,155	$	14,750	$	341	$	178,594
		Charge-offs					-5,892		-8,103		-4,151		-6,043		-1,051		-694		0		-25,934
		Recoveries					2,161		1,599		627		4,036		325		332		0		9,080
		Provision					4,491		6,910		-4,995		-1,602		-479		640		35		5,000
	Balance at September 30, 2013					$	30,997	$	23,974	$	29,197	$	65,218	$	1,950	$	15,028	$	376	$	166,740
						Nine Months Ended September 30, 2013
										Real Estate		Real Estate
								Real Estate -		Secured -		Secured -
						Commercial		Construction		Residential		Commercial		Consumer		Leases		Unallocated		Total
	Allowance for credit losses:
	Balance at January 1, 2013					$	30,207	$	25,171	$	41,276	$	70,053	$	3,722	$	13,341	$	250	$	184,020
		Charge-offs					-26,758		-14,036		-9,771		-11,488		-2,397		-3,015		0		-67,465
		Recoveries					6,197		3,786		1,879		6,841		886		1,596		0		21,185
	Provision					21,351		9,053		-4,187		-188		-261		3,106		126		29,000
Balance at September 30, 2013					$	30,997	$	23,974	$	29,197	$	65,218	$	1,950	$	15,028	$	376	$	166,740
Balance at September 30, 2013
	Individually evaluated for impairment:
			Originated loans and leases		$	1,853	$	1,762	$	1,440	$	6,614	$	49	$	0			$	11,718
			Purchased loans and leases			1,276		343		1,175		792		1		0				3,587
				Total	$	3,129	$	2,105	$	2,615	$	7,406	$	50	$	0			$	15,305
	Collectively evaluated for impairment:
			Originated loans and leases		$	26,916	$	21,839	$	26,596	$	58,772	$	1,908	$	15,028	$	376	$	151,435
			Purchased loans and leases			0		0		0		0		0		0		0		0
				Total	$	26,916	$	21,839	$	26,596	$	58,772	$	1,908	$	15,028	$	376	$	151,435
Financing receivables:
Balance at September 30, 2013					$	2,273,735	$	765,246	$	4,145,522	$	4,109,329	$	935,117	$	1,147,505			$	13,376,454
Balance at September 30, 2013
	Individually evaluated for impairment:
			Originated loans and leases		$	12,236	$	13,905	$	33,910	$	64,143	$	1,730	$	0			$	125,924
			Purchased loans and leases			16,199		12,320		29,274		80,446		264		0				138,503
				Total	$	28,435	$	26,225	$	63,184	$	144,589	$	1,994	$	0			$	264,427
	Collectively evaluated for impairment:
			Originated loans and leases		$	2,133,682	$	660,317	$	3,317,817	$	3,311,119	$	926,099	$	1,147,505			$	11,496,539
			Purchased loans and leases			111,618		78,704		764,521		653,621		7,024		0				1,615,488
				Total	$	2,245,300	$	739,021	$	4,082,338	$	3,964,740	$	933,123	$	1,147,505			$	13,112,027

Goodwill

Goodwill	9 Months Ended
	Sep. 30, 2014
Goodwill And Intangible Assets [Abstract]	'
Goodwill	'
	NOTE 5. Goodwill
	Goodwill is allocated to Susquehanna's reporting units at the date the goodwill is initially recorded. Once goodwill has been allocated to the reporting units, it generally no longer retains its identification with a particular acquisition, but instead becomes identified with the reporting unit as a whole. As a result, all of the fair value of each reporting unit is available to support the value of goodwill allocated to the unit. Goodwill impairment testing is performed at the reporting unit level, one level below the business segment.
	The goodwill impairment analysis is done in two steps. The first step requires a comparison of the fair value of the individual reporting unit to its carrying value, including goodwill. If the fair value of the reporting unit is in excess of the carrying value, the related goodwill is considered not to be impaired and no further analysis is necessary. If the carrying value of the reporting unit exceeds the fair value, there is an indication of potential impairment and a second step of testing is performed to measure the amount of impairment, if any, for the reporting unit.
	Susquehanna assesses goodwill for impairment on an annual basis, or more often if events or circumstances indicate that goodwill may be impaired. This assessment requires significant judgment and analysis.
	Susquehanna performed its annual goodwill impairment assessments in the second quarter of 2014 and determined that the fair value of each of its reporting units exceeded its book value, and that there was no goodwill impairment.
	Bank Reporting Unit
	Goodwill assigned to the bank reporting unit at the annual assessment dates of May 31, 2014 and 2013 was $1,165,200. Fair value of the bank reporting unit was determined using a market approach, which uses prices and other relevant information reported for market transactions involving recent non-distressed sales of comparable financial institutions in the United States, with particular consideration given to transactions within Susquehanna's market, to value the bank reporting unit. The following table shows the ratios used at May 31, 2014 and 2013.
				Annual		Annual
		Ratio		31-May-14		31-May-13
		Price to book		1.48x		1.57x
		Price to tangible book		1.70x		1.80x
		Price to earnings(1)		20.5x		22.1x
		-1	Last twelve months earnings.
	Fair value of the bank reporting unit exceeded carrying value by 25.4% at May 31, 2014, and by 44.6% at May 31, 2013. Since the fair value of the reporting unit is in excess of the carrying value, the related goodwill is considered not to be impaired and the second step in the analysis is unnecessary.
	Wealth Management Reporting Unit
	Goodwill assigned to the wealth management reporting unit at the annual assessment dates of May 31, 2014 and 2013 was $82,746. Fair value of the wealth management reporting unit was determined utilizing the market approach and the income approach. The market approach measures the fair value of the reporting unit using transaction multiples reported for market transactions involving comparable wealth management business. The income approach measures the fair value of the reporting unit by converting the reporting unit's future earnings over ten years, assuming a weighted increase in the reporting unit's revenues and a weighted increase in the reporting unit's expenses, to a single present (discounted) amount, based on a discount rate. The following table shows the factors used in the income approach at May 31, 2014 and 2013.
			Annual		Annual
		Factors	31-May-14		31-May-13
		Discount rate	19.50%		18.40%
		Weighted-average increase in revenues	4.20%		5.00%
		Weighted-average increase in expenses	4.70%		3.30%
	Fair value of the wealth management reporting unit exceeded carrying value by 51.5% at May 31, 2014 and by 45.9% at May 31, 2013. Since the fair value of the reporting unit is in excess of the carrying value, the related goodwill is considered not to be impaired and the second step in the analysis is unnecessary.
	Property and Casualty Insurance Reporting Unit
	Goodwill assigned to the property and casualty insurance reporting unit at the annual assessment dates of May 31, 2014 and 2013 was $17,177. Fair value of the property and casualty insurance reporting unit was determined using the market approach, which measures the fair value of the reporting unit using recent sales of comparable property and casualty insurance companies in Susquehanna's market. Susquehanna uses two key ratios to measure the fair value of the property and casualty insurance reporting unit: average price to book and median price to earnings. The following table shows the ratios used at May 31, 2014 and 2013.
			Annual		Annual
		Ratio	31-May-14		31-May-13
		Average price to book	1.34X		1.15X
		Median price to earnings	21.1X		18.1X
	Fair value of the property and casualty insurance reporting unit exceeded carrying value by 25.6% at May 31, 2014 and by 21.7% at May 31, 2013. Since the fair value of the reporting unit is in excess of the carrying value, the related goodwill is considered not to be impaired and the second step in the analysis is not required.

Deposits

Deposits	9 Months Ended
	Sep. 30, 2014
Deposits [Abstract]	'
Deposits	'
	NOTE 6. Deposits
		Deposits consisted of the following at September 30, 2014 and December 31, 2013:
			September 30,		December 31,
			2014		2013
	Noninterest-bearing:
		Demand	$	1,958,308	$	1,913,526
	Interest-bearing:
		Interest-bearing demand		3,087,166		2,909,376
		Money market		3,297,699		3,144,106
		Savings		1,122,232		1,077,923
		Time		2,265,787		2,113,209
		Time of $100 or more		1,857,332		1,711,232
	Total deposits		$	13,588,524	$	12,869,372

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2014
Income Taxes [Abstract]	'
Income Taxes	'
	NOTE 7. Income Taxes
	Our effective income tax rate for the three months ended September 30, 2014 and 2013 was 29.8% and 31.4%, respectively. Our effective income tax rate for the nine months ended September 30, 2014 and 2013 was 28.5% and 31.1%, respectively. The estimated annual effective income tax rates used in calculating the income tax expense for the reporting periods ended September 30, 2014 and 2013 were impacted by the level of permanent differences, including tax-advantaged income, and by Low Income Housing and other tax credits, resulting in effective income tax rates below statutory rates for the interim reporting periods. The change in the estimated annual effective income tax rates used to calculate income tax expense was influenced by the amount of tax-advantaged income relative to total income for the third quarter of 2014, as compared to the amount of tax-advantaged income relative to total income for the third quarter of 2013. Additionally, adjustments for income tax expense/(benefit) from discrete items recorded for the three months ended September 30, 2014 and 2013 impacted the effective income tax rate by (0.7%) and 0.3%, respectively. Adjustments for income tax expense/(benefit) from discrete items recorded for the nine months ended September 30, 2014 and 2013 impacted the effective income tax rates by (2.0%) and 0.0%, respectively.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Loss	9 Months Ended
	Sep. 30, 2014
Accumulated Other Comprehensive Loss [Abstract]	'
Accumulated Other Comprehensive Loss	'
	NOTE 8. Accumulated Other Comprehensive Loss
			The balances and changes in balances by component of accumulated other comprehensive income (loss) ("AOCI") are shown in the
	following tables:
											Unrealized				Accumulated
							Unrealized Gains (Losses) on				Gains (Losses)		Post-		Other
							Investment securities				on Cash Flow		retirement		Comprehensive
							With OTTI		All other		Hedges		Benefits		Loss
	Balance, July 1, 2014						$	-279	$	10,320	$	-16,874	$	-22,409	$	-29,242
		AOCI before reclassifications, net of tax						0		-908		396		0		-512
		Amounts reclassified from AOCI:
			Interest expense					0		0		5,574		0		5,574
			Net realized loss (gain) on sales and
				impairment of securities				0		0		0		0		0
					Total before income taxes			0		0		5,574		0		5,574
					Less: Income taxes			0		0		-1,951		0		-1,951
						Net of income taxes		0		0		3,623		0		3,623
		Net change in AOCI						0		-908		4,019		0		3,111
	Balance, September 30, 2014						$	-279	$	9,412	$	-12,855	$	-22,409	$	-26,131
	Balance, July 1, 2013						$	-750	$	-414	$	-25,437	$	-39,321	$	-65,922
		AOCI before reclassifications, net of tax						150		1,994		-2,434		0		-290
		Amounts reclassified from AOCI:
			Interest expense					0		0		5,023		0		5,023
			Net realized loss (gain) on sales and
				impairment of securities				0		-2		0		0		-2
					Total before income taxes			0		-2		5,023		0		5,021
					Less: Income taxes			0		1		-1,758		0		-1,757
						Net of income taxes		0		-1		3,265		0		3,264
		Net change in AOCI						150		1,993		831		0		2,974
	Balance, September 30, 2013						$	-600	$	1,579	$	-24,606	$	-39,321	$	-62,948
	Balance, January 1, 2014						$	-279	$	-7,195	$	-21,683	$	-22,409	$	-51,566
		AOCI before reclassifications, net of tax						0		18,742		-1,869		0		16,873
		Amounts reclassified from AOCI:
			Interest expense					0		0		16,457		0		16,457
			Net realized loss (gain) on sales and
				impairment of securities				0		-3,285		0		0		-3,285
					Total before income taxes			0		-3,285		16,457		0		13,172
					Less: Income taxes			0		1,150		-5,760		0		-4,610
						Net of income taxes		0		-2,135		10,697		0		8,562
		Net change in AOCI						0		16,607		8,828		0		25,435
	Balance, September 30, 2014						$	-279	$	9,412	$	-12,855	$	-22,409	$	-26,131
	Balance, January 1, 2013						$	-839	$	37,521	$	-34,636	$	-39,304	$	-37,258
		AOCI before reclassifications, net of tax						-76		-35,660		784		-17		-34,969
		Amounts reclassified from AOCI:
			Interest expense					0		0		14,225		0		14,225
			Net realized loss (gain) on sales and
				impairment of securities				485		-434		0		0		51
					Total before income taxes			485		-434		14,225		0		14,276
					Less: Income taxes			-170		152		-4,979		0		-4,997
						Net of income taxes		315		-282		9,246		0		9,279
		Net change in AOCI						239		-35,942		10,030		-17		-25,690
	Balance, September 30, 2013						$	-600	$	1,579	$	-24,606	$	-39,321	$	-62,948

Pension_and_Other_Postretireme

Pension and Other Postretirement Benefits	9 Months Ended
	Sep. 30, 2014
Benefit Plans [Abstract]	'
Pension And Other Postretirement Benefits	'
	NOTE 9. Pension and Other Postretirement Benefits
	Components of Net Periodic Benefit Cost
			Three Months Ended September 30,
											Other Postretirement
			Pension Benefits				SERP				Benefits
			2014		2013		2014		2013		2014		2013
	Service cost		$	0	$	1,055	$	108	$	69	$	317	$	337
	Interest cost			1,923		1,835		133		100		246		217
	Expected return on plan assets			-2,336		-2,267		0		0		0		0
	Amortization of prior service cost			0		6		57		54		29		29
	Amortization of transition obligation			0		0		0		0		0		2
	Amortization of net actuarial loss			120		884		41		52		0		42
		Net periodic postretirement benefit cost	$	-293	$	1,513	$	339	$	275	$	592	$	627
				Nine Months Ended September 30,
											Other Postretirement
			Pension Benefits				SERP				Benefits
			2014		2013		2014		2013		2014		2013
	Service cost		$	0	$	3,721	$	251	$	695	$	950	$	1,012
	Interest cost			5,768		5,423		378		304		739		651
	Expected return on plan assets			-7,009		-7,091		0		0		0		0
	Amortization of prior service cost			0		19		130		163		86		86
	Amortization of transition obligation			0		0		0		0		0		6
	Amortization of net actuarial loss			361		2,398		98		165		0		126
		Net periodic postretirement benefit cost	$	-880	$	4,470	$	857	$	1,327	$	1,775	$	1,881
	Employer Contributions
	Susquehanna previously disclosed in its financial statements for the year ended December 31, 2013, that it expected to contribute $559 to its pension plans and $782 to its other postretirement benefit plan in 2014. As of September 30, 2014, $419 of contributions had been made to its pension plans, and $587 of contributions had been made to its other postretirement benefit plan. Susquehanna anticipates contributing an additional $140 to fund its pension plans in 2014, for a total of $559, and an additional $195 to it other postretirement benefit plan, for a total of $782.

Earnings_per_Share_EPS

Earnings per Share ("EPS")	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Earnings Per Share ("EPS")	'
	NOTE 10. Earnings per Share ("EPS")
		The following tables set forth the calculation of basic and diluted EPS for the three-month and nine-month periods ended
	September 30, 2014 and 2013.
	Basic earnings per common share
			Three Months Ended September 30,				Nine Months Ended September 30,
			2014		2013		2014		2013
	Net income applicable to common shareholders		$	33,468	$	44,291	$	114,124	$	132,338
	Average common shares outstanding			184,985		187,096		186,683		186,840
	Basic earnings per common share		$	0.18	$	0.24	$	0.61	$	0.71
	Diluted earnings per common share
			Three Months Ended September 30,				Nine Months Ended September 30,
			2014		2013		2014		2013
	Net income available to common shareholders		$	33,468	$	44,291	$	114,124	$	132,338
	Average common shares outstanding			184,985		187,096		186,683		186,840
	Dilutive potential common shares			739		1,013		762		976
	Total diluted average common shares outstanding			185,724		188,109		187,445		187,816
	Diluted earnings per common share		$	0.18	$	0.24	$	0.61	$	0.7
	For the three months ended September 30, 2014 and 2013, average options to purchase 1,191 and 1,455 shares, respectively, were outstanding but were not included in the computation of diluted EPS because the options' common stock equivalents were antidilutive. For the nine months ended September 30, 2014 and 2013, average options to purchase 1,181 and 1,494 shares, respectively, were outstanding but were not included in the computation of diluted EPS because the options' common stock equivalents were antidilutive.

Derivative_Financial_Instrumen

Derivative Financial Instruments	9 Months Ended
	Sep. 30, 2014
Derivative Financial Instruments [Abstract]	'
Derivative Financial Instruments	'
	NOTE 11. Derivative Financial Instruments
	Risk Management Objective of Using Derivatives
	Susquehanna is exposed to certain risks arising from both its business operations and economic conditions. Susquehanna manages economic risk exposures, including interest rate, liquidity, and credit risk, primarily by managing the amount, sources, and duration of its assets and liabilities and through the use of derivative financial instruments. Susquehanna 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 impacted by changes in interest rates. Susquehanna's derivative financial instruments are used to manage differences in the amount, timing, and duration of its known or expected cash payments principally those related to certain variable-rate liabilities. Susquehanna also has derivatives that are a result of a service it provides to certain qualifying customers. Susquehanna manages a matched book with respect to its derivative instruments offered as a part of this service to its customers in order to minimize its interest rate risk resulting from such transactions. All derivatives are recorded at fair value.
	Derivatives may expose Susquehanna to market, credit or liquidity risks in excess of the amounts recorded on the consolidated balance sheets. Market risk of a derivative is the exposure created by potential fluctuations in interest rates and other factors and is a function of the type of derivative, the tenor and terms of the agreement, and the underlying volatility. Credit risk is the exposure to loss in the event of nonperformance by the other party to the transaction where the value of any collateral held is not adequate to cover such losses. Liquidity risk is the potential exposure that arises when the size of the derivative position may not be able to be rapidly adjusted in periods of high volatility and financial stress at a reasonable cost.
	All freestanding derivatives are recorded on the balance sheet at fair value.
	Cash Flow Hedges of Interest Rate Risk
	Susquehanna uses interest rate derivatives to manage its exposure to interest rate movements and add stability to interest income and expense. Susquehanna primarily uses interest rate swaps as part of its interest rate risk management strategy. For example, Susquehanna may issue variable-rate debt and then enter into a receive-variable pay-fixed-rate interest rate swap with the same payment timing and notional amount to convert the interest payments to a net fixed-rate basis for all or a portion of the term of the long-term debt. As of September 30, 2014, December 31, 2013, and September 30, 2013, Susquehanna had 13, 14, and 14 interest rate swaps, respectively, for each period, with an aggregate notional amount of $1,116,178, $1,146,437, and $1,148,328, respectively, that were designated as cash flow hedges of interest-rate risk.
	Susquehanna applies hedge accounting to certain interest rate derivatives entered into for risk management purposes. To qualify for hedge accounting, a derivative must be highly effective at reducing the risk associated with the exposure being hedged. In addition, key aspects of achieving hedge accounting are documentation of hedging strategy and hedge effectiveness at the hedge inception and substantiating hedge effectiveness on an ongoing basis. A derivative must be highly effective in accomplishing the hedge objective of offsetting either changes in the fair value or cash flows of the hedged item for the risk being hedged. Any ineffectiveness in the hedge relationship is recognized in current earnings. The assessment of effectiveness excludes changes in the value of the hedged item that are unrelated to the risks being hedged. The effective portion of changes in the fair value of derivatives designated in a hedge relationship and that qualify as cash flow hedges is recorded in accumulated other comprehensive income and is subsequently reclassified into earnings in the period that the hedged transaction affects earnings.
	Amounts recorded in accumulated other comprehensive loss related to derivatives will be reclassified to interest expense as interest payments are made on Susquehanna's variable-rate liabilities. During the next 12 months, Susquehanna estimates that $16,723 will be reclassified as an expense to net interest income.
	Non-designated Derivatives
	Derivatives not designated as hedges are used to manage Susquehanna's exposure to interest rate movements and other identified risks but do not meet the strict requirements of hedge accounting. Changes in the fair value of derivatives not designated in hedging relationships are recognized directly in earnings.
	Susquehanna does not seek to apply hedge accounting to all of the derivatives involved in Susquehanna's risk management activities, such as the interest rate derivatives entered into to offset the derivatives offered to qualifying borrowers. Susquehanna offers qualifying commercial banking customers derivatives to enable such customers to transfer, modify or reduce their interest rate risks. The credit risk associated with derivatives entered into with these customers is essentially the same as that involved in extending loans and is subject to our normal credit policies. Susquehanna obtains collateral based upon its assessment of the customers' credit quality. Susquehanna actively manages the market risks from its exposure to these derivatives by entering into offsetting derivative transactions, controls focused on pricing, and reporting of positions to senior managers to minimize its exposure resulting from such transactions.
	At September 30, 2014 and 2013, Susquehanna had 359 and 232 derivative transactions, respectively, related to these risk management activities with an aggregate notional amount of $1,840,638 and $1,540,599, respectively. For the three-month and nine-month periods ended September 30, 2014, Susquehanna recognized a net loss of $1,714 and $3,326, respectively, and for the three-month and nine-month periods ended September 30, 2013, Susquehanna recognized a net gain of $1,545 and $3,159, respectively, related to changes in fair value of the derivatives in this program.
	Credit-risk-related Contingent Features
	Susquehanna has agreements with certain of its derivative counterparties that contain the following provisions:
	if Susquehanna defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then Susquehanna could also be declared in default on its derivative obligations;
	if Susquehanna fails to maintain its status as a well/adequately capitalized institution, then the counterparty could terminate the derivative positions, and Susquehanna would be required to settle its obligations under the agreements;
	if Susquehanna fails to maintain a specified minimum leverage ratio, then Susquehanna could be declared in default on its derivative obligations;
	At September 30, 2014 and December 31, 2013, the fair value of derivatives in a net liability position, which includes accrued interest and any credit valuation adjustments related to these agreements, was $35,668 and $50,247, respectively. At September 30, 2014 and December 31, 2013, Susquehanna had minimum collateral posting thresholds with certain of its derivative counterparties and had posted cash collateral of $36,843 and $42,813, respectively. If Susquehanna had breached any of the above provisions at September 30, 2014, it would have been required to settle its obligations under the agreements at termination value and would have been required to pay any additional amounts due in excess of amounts previously posted as collateral with the respective counterparty.
	Fair Value of Derivative Instruments
			Fair Values of Derivative Instruments
			30-Sep-14
			Asset Derivatives			Liability Derivatives
			Balance Sheet			Balance Sheet
			Location	Fair Value		Location		Fair Value
	Derivatives designated as hedging instruments
		Interest rate contracts	Other assets	$	725	Other liabilities		$	17,506
	Derivatives not designated as hedging instruments
		Interest rate contracts	Other assets		21,614	Other liabilities			18,162
	Total derivatives			$	22,339			$	35,668
			Fair Values of Derivative Instruments
			31-Dec-13
			Asset Derivatives			Liability Derivatives
			Balance Sheet			Balance Sheet
			Location	Fair Value		Location		Fair Value
	Derivatives designated as hedging instruments
		Interest rate contracts	Other assets	$	1,419	Other liabilities		$	31,662
	Derivatives not designated as hedging instruments
		Interest rate contracts	Other assets		22,897	Other liabilities			18,585
	Total derivatives			$	24,316			$	50,247
	The Effect of Derivative Instruments on Comprehensive Income
	Three Months Ended September 30, 2014
									Location of Loss	Amount of Loss
				Location of Loss		Amount of Loss			Recognized in	Recognized in
		Amount of Gain		Reclassified from		Reclassified from			Income	Income
	Derivatives in Cash Flow	Recognized		Accumulated OCI		Accumulated OCI			(Ineffective	(Ineffective
	Hedging Relationships	in OCI		into Income		into Income			Portion)	Portion)
	Interest rate contracts:	$	4,010		Interest expense	$	-5,574		Other expense	$	0
			Location of Loss	Amount of Loss
			Recognized	Recognized
	Derivatives Not Designated		in Income	in Income
	as Hedging Instruments		on Derivatives	on Derivatives
	Interest rate contracts:		Other income	$	-1,714
			Other expense		0
	Three Months Ended September 30, 2013
									Location of Loss	Amount of Loss
				Location of Loss		Amount of Loss			Recognized in	Recognized in
		Amount of Gain		Reclassified from		Reclassified from			Income	Income
	Derivatives in Cash Flow	Recognized		Accumulated OCI		Accumulated OCI			(Ineffective	(Ineffective
	Hedging Relationships	in OCI		into Income		into Income			Portion)	Portion)
	Interest rate contracts:	$	831		Interest expense	$	-5,023		Other expense	$	0
			Location of Gain	Amount of Gain
			Recognized	Recognized
Derivatives Not Designated		in Income	in Income
as Hedging Instruments		on Derivatives	on Derivatives
Interest rate contracts:		Other income	$	1,545
		Other expense		0
Nine Months Ended September 30, 2014
								Location of Loss	Amount of Loss
			Location of Loss		Amount of Loss			Recognized in	Recognized in
	Amount of Gain		Reclassified from		Reclassified from			Income	Income
Derivatives in Cash Flow	Recognized		Accumulated OCI		Accumulated OCI			(Ineffective	(Ineffective
Hedging Relationships	in OCI		into Income		into Income			Portion)	Portion)
Interest rate contracts:	$	6,224		Interest expense	$	-16,457		Other expense	$	0
		Location of Loss	Amount of Loss
		Recognized	Recognized
Derivatives Not Designated		in Income on	in Income on
as Hedging Instruments		Derivatives	Derivatives
Interest rate contracts:		Other income	$	-3,326
		Other expense		0
Nine Months Ended September 30, 2013
								Location of Loss	Amount of Loss
			Location of Loss		Amount of Loss			Recognized in	Recognized in
	Amount of Gain		Reclassified from		Reclassified from			Income	Income
Derivatives in Cash Flow	Recognized		Accumulated OCI		Accumulated OCI			(Ineffective	(Ineffective
Hedging Relationships	in OCI		into Income		into Income			Portion)	Portion)
Interest rate contracts:	$	10,030		Interest expense	$	-14,225		Other expense	$	0
		Location of Gain	Amount of Gain
		(Loss) Recognized	(Loss) Recognized
Derivatives Not Designated		in Income	in Income
as Hedging Instruments		on Derivatives	on Derivatives
Interest rate contracts:		Other income	$	3,160
		Other expense		-1

Balance_Sheet_Offsetting

Balance Sheet Offsetting	9 Months Ended
	Sep. 30, 2014
Offsetting [Abstract]	'
Balance Sheet Offsetting	'
	NOTE 12. Balance Sheet Offsetting
	Assets and liabilities relating to certain financial instruments, including derivatives and securities sold under agreements to repurchase, may be eligible for offset in the consolidated balance sheet as permitted under accounting guidance. Susquehanna is party to transactions involving derivative instruments that are subject to master netting arrangements or similar agreements. Under these agreements, Susquehanna may have the right to net settle multiple contracts with the same counterparty. Certain derivative transactions may require Susquehanna to receive or pledge cash collateral based on the contract provisions.
	Susquehanna also enters into agreements in which it sells securities subject to an obligation to repurchase the same or similar securities. Under these agreements, Susquehanna may transfer legal control over the assets but still retain effective control through an agreement that both entitles and obligates Susquehanna to repurchase the assets. The obligation to repurchase the securities is reflected as a liability in Susquehanna's consolidated balance sheet, while the securities underlying the repurchase agreements remain in the respective investment securities account, therefore there is no offsetting or netting of the investment securities assets with the repurchase agreement liability.
	Susquehanna also offers derivative products to qualifying customers and enters into offsetting derivative transactions in due course. Susquehanna manages a matched book with respect to its derivative instruments offered as part of this service to its customers in order to minimize its interest rate risk resulting from such transactions. These instruments are free-standing derivatives and are recorded at fair value on the consolidated balance sheet. Collateral is posted by the counterparty with net liability positions in accordance with the contract provisions.
	Susquehanna is subject to the regulations of the Commodity Futures Trading Commission that require financial institutions to clear all eligible contracts originated subsequent to June 2013. Susquehanna fulfills this obligation by clearing its eligible contracts through a clearing member that faces a designated clearing house on Susquehanna's behalf. Susquehanna reports amounts for interest rate contracts in a single clearing member account as of period end on a net basis in the Consolidated Balance Sheet, including the related unrealized contract gains and losses, accrued interest receivable/payable, and cash collateral posted as initial and variation margin. Derivatives originated prior to June 2013 continue to be presented on a gross basis in the Consolidated Balance Sheet.
		The following table provides information about financial instruments that are eligible for offset at September 30, 2014 and
	December 31, 2013.
	Balance Sheet Netting Disclosure about Offsetting Assets and Liabilities
										Net Amounts
										Presented in
										the			Gross Amounts Not Offset in the
				Gross						Consolidated			Consolidated Balance Sheet
				Amounts			Gross Amounts			Balance			Financial			Cash
				Recognized			Offset			Sheet			Instruments			Collateral			Net Amount
	30-Sep-14
	Financial assets:
		Derivatives		$	22,339		$	0		$	22,339		$	0		$	-1,590		$	20,749
	Financial liabilities:
		Derivatives		$	35,668		$	0		$	35,668		$	0		$	-28,858		$	6,810
		Repurchase agreements			281,085			0			281,085			-281,085			0			0
			Total	$	316,753		$	0		$	316,753		$	-281,085		$	-28,858		$	6,810
	31-Dec-13
	Financial assets:
		Derivatives		$	24,316		$	0		$	24,316		$	0		$	-3,940		$	20,376
	Financial liabilities:
		Derivatives		$	50,247		$	0		$	50,247		$	0		$	-35,385		$	14,862
		Repurchase agreements			295,800			0			295,800			-295,800			0			0
			Total	$	346,047		$	0		$	346,047		$	-295,800		$	-35,385		$	14,862
			The table below presents the offsetting of derivative assets and derivative liabilities as of September 30, 2014 and December 31,
	2013
					Derivative Assets and Collateral												Derivative Liabilities and Collateral
					Held by Counterparty												Pledged by Counterparty
					Amounts			Gross Amounts									Amounts			Gross Amounts
					Presented in			Not Offset									Presented in			Not Offset
					the			in the Consolidated									the			in the Consolidated
					Consolidated			Balance Sheet									Consolidated			Balance Sheet
					Balance			Financial			Cash			Net			Balance			Financial		Cash		Net
	30-Sep-14				Sheet			Instruments			Collateral			Amount			Sheet			Instruments		Collateral		Amount
	Cleared Agreements:
		Clearing member A			$	0		$	0		$	0		$	0		$	6,485		$	0	$	-6,485	$	0
						0			0			0			0			6,485			0		-6,485		0
	Bilateral Agreements:
		Counterparty:
			Dealer A			1,054			0			0			1,054			3,470			0		-2,560		910
			Dealer B			1,145			0			0			1,145			2,039			0		-1,310		729
			Dealer C			129			0			0			129			1,002			0		-850		152
			Dealer D			2,722			0			-1,590			1,132			953			0		0		953
			Dealer E			0			0			0			0			12,642			0		-12,642		0
			Dealer F			0			0			0			0			2,049			0		-2,049		0
			Dealer G			0			0			0			0			2,014			0		-2,014		0
			Dealer H			0			0			0			0			668			0		-668		0
			Dealer I			0			0			0			0			394			0		-280		114
			Dealer J			0			0			0			0			13			0		0		13
			End User			17,289			0			0			17,289			3,939			0		0		3,939
						22,339			0			-1,590			20,749			29,183			0		-22,373		6,810
				Total	$	22,339		$	0		$	-1,590		$	20,749		$	35,668		$	0	$	-28,858	$	6,810
	31-Dec-13
	Cleared Agreements:
		Clearing member A			$	19		$	0		$	0		$	19		$	1,077		$	0	$	-1,077	$	0
						19			0			0			19			1,077			0		-1,077		0
	Bilateral Agreements:
		Counterparty:
			Dealer A			2,836			0			0			2,836			3,840			0		-1,290		2,550
		Dealer B			2,412			0			0			2,412			3,306			0		-1,400		1,906
		Dealer C			359			0			0			359			684			0		-550		134
		Dealer D			5,571			0			-3,940			1,631			688			0		0		688
		Dealer E			0			0			0			0			21,251			0		-21,251		0
		Dealer F			0			0			0			0			5,081			0		-5,081		0
		Dealer G			0			0			0			0			3,966			0		-3,966		0
		Dealer H			0			0			0			0			770			0		-770		0
		Dealer I			0			0			0			0			121			0		0		121
		Dealer J			0			0			0			0			18			0		0		18
		End User			13,119			0			0			13,119			9,445			0		0		9,445
					24,297			0			-3,940			20,357			49,170			0		-34,308		14,862
			Total	$	24,316		$	0		$	-3,940		$	20,376		$	50,247		$	0	$	-35,385	$	14,862

Fair_Value_Disclosures

Fair Value Disclosures	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Disclosures	'
	NOTE 13. Fair Value Disclosures
	The accounting guidance for fair value measurements and disclosures defines fair value, establishes a framework for measuring fair value, and sets forth disclosure requirements regarding fair value measurements. This guidance applies whenever other accounting guidance requires or permits assets or liabilities to be measured at fair value. Fair value measurement assumes that the transaction to sell the asset or transfer the liability takes place either in the principal market for the asset or liability, or, in the absence of a principal market, in the most advantageous market for the asset or liability.
	Susquehanna uses fair value measurements for the initial recording of certain assets and liabilities and periodic subsequent measurement of certain assets and liabilities on a recurring or non-recurring basis.
	Fair Value Hierarchy
	The accounting guidance for fair value measurements and disclosures establishes a three-level fair value hierarchy that prioritizes the inputs into the valuation techniques used to measure fair value. The fair value hierarchy gives the highest priority, Level 1, to measurements based on quoted prices in active markets for identical assets or liabilities. The next highest priority, Level 2, is given to measurements based on observable inputs other than quoted prices in active markets for identical assets and liabilities. The lowest priority, Level 3, is given to measurements based on unobservable inputs. Assets and liabilities are classified in their entirety within the fair value hierarchy based on the lowest level input that is significant to the fair value measurement.
	The accounting guidance requires the measurement of fair value to maximize the use of observable inputs and minimize the use of unobservable inputs. Observable inputs reflect the assumptions market participants would use in pricing the asset or liability developed based on market data obtained from sources independent of the reporting entity. Unobservable inputs reflect Susquehanna's own assumptions about the assumptions market participants would use in pricing the asset or liability developed based on the best information available in the circumstances.
	Valuation Processes and Controls over Fair Value Measurement
	As part of Susquehanna's overall valuation process, management employs processes to evaluate and validate the methodologies, techniques and inputs, including review and approval of valuation judgments, methods, models, process controls, and results. These processes are designed to help ensure that the fair value measurements and disclosures are appropriate, consistently applied, and reliable.
	Valuation Methodologies and Inputs
	The following is a description of Susquehanna's valuation methodologies and more significant inputs for assets and liabilities measured at fair value. These methods may produce a fair value measurement that may not be indicative of future fair values. Furthermore, while Susquehanna believes that its valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date.
	Susquehanna uses a third-party pricing service and third-party financial advisory firms in determining the fair value of its securities. Certain fair value measurements are derived from market-based pricing matrices that were developed using observable inputs that include benchmark yields, benchmark securities, reported trades, offers, bids, issuer spreads and broker quotes. For certain other fair value measurements, when market observable data is not available due to the lack of an active market for a given security, the valuation of the security involves assistance of a third-party financial advisory firm and substantial judgment by management.
	Specific valuation methodologies and inputs used in determining the fair value of each significant class of assets and liabilities follows:
	Cash and due from banks and short-term investments
	For those short-term instruments, the carrying amount is a reasonable estimate of fair value.
	Investment securities
	U.S. Government agencies: These are debt securities issued by U.S. government-sponsored entities (“GSE”). These securities are valued using market-based pricing matrices that are based on observable inputs that include benchmark yields, benchmark securities, reported trades, offers, bids, issuer spreads and broker quotes. The investor base is broad, resulting in moderate trading volumes and are classified as Level 2 in the fair value hierarchy. These valuations are sensitive to interest rates. As interest rates increase (decrease), the fair value of the securities will generally decrease (increase).
	Obligations of states and political subdivisions: These securities are valued using market-based pricing matrices that are based on observable inputs including the structure of the bond, including call terms, cross-collateralization features, and tax-exempt features, together with MSRB reported trades, issuer spreads, material event notices and benchmark yield curves. The investor base for most issues of municipal securities is fairly broad, resulting in moderate trading volumes and are classified as Level 2 in the fair value hierarchy. These valuations are sensitive to trends in the broader municipal securities market, which includes credit risk. As market concerns associated with credit risk increase (decrease), the fair value of the securities will generally decrease (increase).
	Agency residential mortgage-backed securities: These securities are valued using market-based pricing matrices that are based on observable inputs, including benchmark TBA security pricing and yield curves that were estimated based on U.S. Treasury yields and certain floating rate indices. The pricing matrices for these securities may also give consideration to pool-specific data supplied directly by the GSE. GSE collateralized mortgage obligations (“CMOs”) are valued using market-based pricing matrices that are based on observable inputs including offers, bids, reported trades, dealer quotes and market research reports, the characteristics of a specific tranche, market convention prepayment speeds and benchmark yield curves as described above. Because agency residential mortgage-backed securities are generally liquid and are valued using observable pricing in the market, they generally are classified as Level 2. As interest rates increase (decrease), the fair value of the securities will generally decrease (increase).
	Non-agency mortgage-backed securities: Refer to the description in “Note 2-Investment Securities”.
	Commercial mortgage-backed securities: Commercial mortgage-backed securities are valued primarily based on the median prices from multiple pricing services. Some of the important valuation assumptions used by the pricing services include the collateral type, collateral performance, capital structure, issuer, credit enhancement, coupon, weighted average life, and interest rates, coupled with the observed spread levels on trades of similar securities. Many of these securities have significant prepayment lockout periods or penalty periods that limit the window of potential prepayment to a relatively narrow band. These securities are primarily classified as Level 2.
	These valuations are sensitive to market changes, specifically changes in interest rates and credit spreads. As interest rates increase (decrease) and/or credit spreads widens (tightens), fair values will typically decrease (increase).
	Other structured financial products: The significant unobservable inputs used in the fair value measurement of Susquehanna's other structured financial products are conditional repayment rate, loss severity, and conditional default rate. Significant increases (decreases) in any of those inputs in isolation would result in a significantly lower (higher) fair value measurement. Generally, a change in the assumption used for the probability of default is accompanied by a directionally similar change in the assumption used for the loss severity and directionally opposite change in the assumption used for repayment rate. In addition, refer to the description in “Note 2-Investment Securities.”
	Other debt securities: These securities consist primarily of government and corporate bonds. These securities are valued using market-based pricing matrices that are based on observable inputs that include benchmark yields, benchmark securities, reported trades, offers, bids, issuer spreads and broker quotes. The investor base is broad, resulting in moderate trading volumes and are classified as Level 2 in the fair value hierarchy. These valuations are sensitive to interest rates. As interest rates increase (decrease), the fair value of the securities will generally decrease (increase).
	Other equity securities; These securities include liquid, exchange-traded equity securities as well as thinly-traded bank stocks and trust preferred securities. The exchange-traded equities are classified in Level 1 because they are valued using quoted market prices. The thinly traded and trust preferred securities are classified in Level 2 or 3 based on the significance of market observable inputs to the overall measurement.
	Restricted investments in bank stocks
	Restricted investments in bank stocks consists of FRB stock, FHLB stock, and Atlantic Community Bankers Bank stock. Federal law requires a member institution of the district FRB and FHLB to hold stock according to predetermined formulas. Atlantic Community Bankers Bank requires its correspondent banking institutions to hold stock as a condition of membership.
	Loans and leases
	The fair values for loans are estimated using discounted cash flow analyses, applying interest rates currently being offered for loans with similar terms and credit quality, which are indicative of orderly transactions in the current market. For commercial loans and leases, internal risk grades are used to adjust discount rates for risk migration and expected losses. For residential mortgage and other consumer loans, internal prepayment risk models are used to adjust contractual cash flows. Loans are aggregated into pools of similar terms and credit quality and discounted using benchmark-based rates. The carrying amounts of accrued interest receivable approximate fair values.
	Deposits
	The fair values of demand, interest-bearing demand, and savings deposits are the amounts payable on demand at the balance sheet date; recognition of the inherent funding value of these instruments is not permitted. The carrying value of variable-rate time deposits approximates fair value. The fair value of fixed-rate time deposits is based upon the discounted value of future cash flows expected to be paid at maturity, using the U.S. Treasury yield curve.
	Short-term borrowings
	For those short-term instruments, the carrying amount approximates fair value.
	FHLB borrowings and long-term debt
	Fair values were based upon quoted rates of similar instruments issued by banking institutions with similar credit ratings. The carrying amounts of accrued interest payable approximate fair values.
	Derivatives
	The fair values of interest rate swaps are determined using models that use readily observable market inputs and a market standard methodology applied to the contractual terms of the derivatives, including the period to maturity and interest rate indices.
	The methodology nets the discounted future fixed cash receipts (or payments) and the discounted expected variable cash payments (or receipts). The variable cash payments (or receipts) are based on an expectation of future interest rates derived from observable market interest rate curves. Susquehanna incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty's nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, Susquehanna has considered the impact of netting and any applicable credit enhancements, such as collateral postings and thresholds, mutual settlements, and guarantees.
	Susquehanna discounts over-the-counter (“OTC”) derivatives using Overnight Index Swap (“OIS”) rates.  Fully collateralized trades are discounted using OIS with no additional economic adjustments to arrive at fair value.  Uncollateralized or partially-collateralized trades are also discounted at OIS, but include appropriate economic adjustments for funding costs, such as a spread between LIBOR and OIS to approximate an uncollateralized cost of funds, and credit risk.  Susquehanna made the changes to reflect inputs, assumptions, and pricing methodologies that are used in its principal market by market participants.
	Although Susquehanna has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives may use Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of September 30, 2014 and December 31, 2013, Susquehanna has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, Susquehanna has determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy.
	The fair values of commitments to originate mortgage loans to be held for sale and their corresponding forward-sales agreements are estimated using the fees charged to enter into similar agreements, taking into account the remaining terms of the agreements and the present creditworthiness of the counterparties. The valuation of fixed-rate loan commitments also considers the difference between current levels of interest rates and the committed rates. These respective fair value measurements would be categorized within Level 3 of the fair value hierarchy.
	For additional information regarding derivatives, refer to “Note 11 – Derivative Financial Instruments” above.
	Off-balance-sheet items
	The fair values of unused commitments to lend and standby letters of credit are considered to be the same as their contractual amounts.
	Assets and Liabilities Measured at Fair Value on a Recurring Basis
			The following tables present the financial instruments carried at fair value at September 30, 2014 and December 31, 2013, on
	the consolidated balance sheets and by levels within the valuation hierarchy.
									Fair Value Measurements at Reporting Date Using
									Quoted Prices in			Significant
									Active Markets for			Other			Significant
									Identical			Observable			Unobservable
									Instruments			Inputs			Inputs
	Description					30-Sep-14			(Level 1)			(Level 2)			(Level 3)
	Assets
	Available-for-sale securities:
		U.S. Government Agencies				$	93,716		$	0		$	93,716		$	0
		Obligations of states and political
			subdivisions				396,343			0			396,343			0
		Agency residential mortgage-backed
			securities				1,635,299			0			1,635,299			0
		Non-agency residential mortgage-
			backed securities				304			0			304			0
		Commercial mortgage-backed
			securities				5,837			0			5,837			0
	Other structured financial products					11,761			0			0			11,761
	Other debt securities					24,921			0			24,921			0
	Other equity securities					24,434			21,665			0			2,769
Derivatives: (1)
	Designated as hedging instruments					725			0			725			0
	Not designated as hedging
		instruments				21,614			0			21,614			0
			Total		$	2,214,954		$	21,665		$	2,178,759		$	14,530
Liabilities
Derivatives: (2)
	Designated as hedging instruments				$	17,506		$	0		$	17,506		$	0
	Not designated as hedging
		instruments				18,162			0			18,162			0
			Total		$	35,668		$	0		$	35,668		$	0
								Fair Value Measurements at Reporting Date Using
								Quoted Prices in			Significant
								Active Markets for			Other			Significant
								Identical			Observable			Unobservable
								Instruments			Inputs			Inputs
Description					31-Dec-13			(Level 1)			(Level 2)			(Level 3)
Assets
Available-for-sale securities:
	U.S. Government Agencies				$	110,148		$	0		$	110,148		$	0
	Obligations of states and political
		subdivisions				398,510			0			398,510			0
	Agency residential mortgage-
		backed securities				1,778,192			0			1,778,192			0
	Non-agency residential mortgage-
		backed securities				565			0			565			0
	Commercial mortgage-backed
		securities				8,734			0			8,734			0
	Other structured financial products					11,297			0			0			11,297
	Other debt securities					44,086			0			44,086			0
	Other equity securities					23,692			20,895			0			2,797
Derivatives: (1)
	Designated as hedging instruments					1,419			0			1,419			0
	Not designated as hedging
		instruments				22,897			0			22,897			0
			Total		$	2,399,540		$	20,895		$	2,364,551		$	14,094
Liabilities
Derivatives: (2)
	Designated as hedging instruments				$	31,662		$	0		$	31,662		$	0
	Not designated as hedging
		instruments				18,585			0			18,585			0
			Total		$	50,247		$	0		$	50,247		$	0
-1	Included in Other assets
-2	Included in Other liabilities
Assets Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs
		The following tables present roll-forwards of the balance sheet amounts for the three and nine month periods ended September
30, 2014 and 2013, for financial instruments classified by Susquehanna within Level 3 of the valuation hierarchy.
					Available-for-sale Securities
											Non-
											agency
								Other			Residential
								Structured			Mortgage-
					Equity			Financial			backed
					Securities			Products			Securities			Total
Balance at July 1, 2014					$	2,803		$	11,995		$	0		$	14,798
	Included in earnings					0			0			0			0
	Realized other-than-temporary impairment					0			0			0			0
	Principal paydowns					0			-143			0			-143
	Included in other comprehensive income					-34			-91			0			-125
Balance at September 30, 2014					$	2,769		$	11,761		$	0		$	14,530
Balance at July 1, 2013					$	2,820		$	10,506		$	24,549		$	37,875
	Included in earnings					0			0			0			0
	Realized other-than-temporary impairment					0			0			26			26
	Principal paydowns					0			-37			-1,789			-1,826
	Included in other comprehensive income					1			975			236			1,212
Balance at September 30, 2013					$	2,821		$	11,444		$	23,022		$	37,287
Balance at January 1, 2014					$	2,797		$	11,297		$	0		$	14,094
	Included in earnings					0			0			0			0
	Realized other-than-temporary impairment					0			0			0			0
	Principal paydowns					0			-378			0			-378
	Included in other comprehensive income					-28			842			0			814
Balance at September 30, 2014					$	2,769		$	11,761		$	0		$	14,530
Balance at January 1, 2013					$	3,156		$	9,550		$	26,800		$	39,506
	Included in earnings					-97			0			-379			-476
	Realized other-than-temporary impairment					0			0			156			156
	Principal paydowns					0			-114			-5,029			-5,143
	Included in other comprehensive income					-238			2,008			1,474			3,244
Balance at September 30, 2013					$	2,821		$	11,444		$	23,022		$	37,287
Susquehanna's policy is to recognize transfers in and transfers out of Levels 1, 2, and 3 as of the end of a reporting period.
Assets Measured at Fair Value on a Nonrecurring Basis
Impaired loans
Impaired collateral dependent loans and other loans where the carrying value is based on the fair value of the underlying collateral minus selling costs, such as residential mortgage loans charged off in accordance with regulatory guidance, are measured at fair value on a nonrecurring basis. The fair value of the underlying collateral is incorporated into the estimate of the impairment of a loan. Most of Susquehanna's impaired collateral dependent loans are secured by real estate. The value of the real estate collateral is determined through appraisals performed by third party, licensed appraisers. As part of Susquehanna's overall valuation process, management evaluates these third party appraisals to ensure that they are representative of the exit prices in Susquehanna's principal markets. Susquehanna considers the appraisals used in its impairment analysis to be Level 3 inputs. When the value of the real estate, less estimated selling costs, is less than the principal balance of the loan, a specific reserve is established. Impaired loans are reviewed at least quarterly for additional impairment, and reserves are adjusted accordingly.
Foreclosed Assets
Other real estate property acquired through foreclosure is recorded at the lower of its carrying value or the fair value of the related real estate collateral at the transfer date, less estimated selling costs. The value of the real estate collateral is determined through appraisals performed by third party licensed appraisers. As part of Susquehanna's overall valuation process, management evaluates these third party appraisals to ensure that they are representative of the exit prices in Susquehanna's principal markets. Susquehanna considers the appraisals used in its impairment analysis to be Level 3 inputs.
	The following tables present assets measured at fair value on a nonrecurring basis at September 30, 2014 and
December 31, 2013, on the consolidated balance sheets and by the valuation hierarchy.
						Quoted
						Prices
						in Active			Significant
						Markets for			Other			Significant
						Identical			Observable			Unobservable
						Instruments			Inputs			Inputs
	Description		30-Sep-14			(Level 1)			(Level 2)			(Level 3)
	Impaired loans		$	47,441		$	0		$	0		$	47,441
	Foreclosed assets			9,133			0			0			9,133
			$	56,574		$	0		$	0		$	56,574
						Quoted
						Prices
						in Active			Significant
						Markets for			Other			Significant
						Identical			Observable			Unobservable
						Instruments			Inputs			Inputs
	Description		31-Dec-13			(Level 1)			(Level 2)			(Level 3)
	Impaired loans		$	54,216		$	0		$	0		$	54,216
	Foreclosed assets			16,555			0			0			16,555
			$	70,771		$	0		$	0		$	70,771
	The following table details the quantitative information about Level 3 fair value measurements:
		Fair Value at		Valuation		Range
Asset		30-Sep-14		Technique(s)	Unobservable Input	(Weighted Average)
Other structured financial products (1)		$	11,761	Discounted Cash Flow	Credit default rates, call options and deferrals, waterfall structure, and covenants.	Varies by individual security, refer to Note 2
Other equity securities			2,769	Discounted Cash Flow	Cash flows from dividends and terminal value	0.2x - 1.2x
						(0.8x)
Impaired loans			47,441	Discounted Cash Flow	Cash flows based upon current discount rates and terminal value	0.6% - 13.9%
						-4.00%
Foreclosed assets			9,133	Discounted Cash Flow	Third party appraisals less estimated selling costs	0.0% - 100.0%
						-38.70%
		Fair Value at		Valuation		Range
Asset		31-Dec-13		Technique(s)	Unobservable Input	(Weighted Average)
Other structured financial products (1)		$	11,297	Discounted Cash Flow	Credit default rates, call options and deferrals, waterfall structure, and covenants.	Varies by individual security, refer to Note 2
Other equity securities			2,797	Discounted Cash Flow	Cash flows from dividends and terminal value	0.2x - 1.5x
						(0.8x)
Impaired loans			54,216	Discounted Cash Flow	Cash flows based upon current discount rates and terminal value	0.8% - 8.0%
						-3.90%
Foreclosed assets			16,555	Discounted Cash Flow	Third party appraisals less estimated selling costs	0.0% - 100.0%
						-29.60%
-1	The significant unobservable inputs used in the fair value measurement of Susquehanna's other structured financial products are conditional repayment rate, loss severity, and conditional default rate. Significant increases (decreases) in any of those inputs in isolation would result in a significantly lower (higher) fair value measurement. Generally, a change in the assumption used for the probability of default is accompanied by a directionally similar change in the assumption used for the loss severity and directionally opposite change in the assumption used for repayment rate.
Additional Disclosures about Fair Value of Financial Instruments
	The following table represents the carrying amounts and estimated fair values of Susquehanna's financial instruments. The
methods and assumptions used to estimate the fair value of each class of financial instruments are described above.
			30-Sep-14
			Carrying
			Amount			Fair Value			Level 1			Level 2			Level 3
	Financial assets:
		Cash and due from banks	$	772,677		$	772,677		$	772,677		$	0		$	0
		Short-term investments		79,662			79,662			0			79,662			0
		Investment securities		2,192,615			2,192,615			21,665			2,156,420			14,530
		Restricted investment in bank stocks		133,119			133,119			0			133,119			0
		Loans and leases		13,425,721			13,422,747			0			0			13,422,747
		Derivatives		22,339			22,339			0			22,339			0
	Financial liabilities:
		Deposits		13,588,524			12,660,047			0			12,660,047			0
		Short-term borrowings		532,675			532,675			0			532,675			0
		FHLB borrowings		915,362			918,764			0			918,764			0
		Long-term debt		356,117			354,524			0			354,524			0
		Derivatives		35,668			35,668			0			35,668			0
			31-Dec-13
			Carrying
			Amount			Fair Value			Level 1			Level 2			Level 3
	Financial assets:
		Cash and due from banks	$	305,357		$	305,357		$	305,357		$	0		$	0
		Short-term investments		83,227			83,227			0			83,227			0
		Investment securities		2,375,224			2,375,224			20,895			2,340,235			14,094
		Restricted investment in bank stocks		158,232			158,232			0			158,232			0
		Loans and leases		13,576,086			13,463,676			0			0			13,463,676
		Derivatives		24,316			24,316			0			24,316			0
	Financial liabilities:
		Deposits		12,869,372			11,901,099			0			11,901,099			0
		Short-term borrowings		555,740			555,740			0			555,740			0
		FHLB borrowings		1,531,282			1,531,606			0			1,531,606			0
		Long-term debt		453,260			461,247			0			461,247			0
		Derivatives		50,247			50,247			0			50,247			0

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Basis Of Presentation	'
	Basis of Presentation
	The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP") for interim financial information. Certain prior-year amounts have been reclassified to conform to current period. In the opinion of management, the information reflects all normal recurring adjustments necessary for a fair statement of results for the three and nine months ended September 30, 2014 and 2013. The year-end balance sheet data was derived from audited financial statements, but does not include all disclosures required by U.S. GAAP. Operating results for the three-month and nine-month periods ended September 30, 2014 are not necessarily indicative of the results that may be expected for the year ending December 31, 2014.
	The accounting policies of Susquehanna Bancshares, Inc. and Subsidiaries ("Susquehanna"), as applied in the consolidated interim financial statements presented herein, are substantially the same as those followed on an annual basis as presented on pages 78 through 85 of Susquehanna's Annual Report on Form 10-K for the fiscal year ended December 31, 2013.
	Consumer Lease Financing. Susquehanna originates financing leases on consumer vehicles. These leases are reported in the consolidated balance sheet under the loans and leases caption as a net amount, consisting of the aggregate of lease payments receivable and guaranteed residual values, less unearned income. Income is recognized in a manner which results in an approximate level yield over the lease term. Residual values for vehicle leases are guaranteed by a third party unrelated to either Susquehanna or the lessee.
	Loans and Leases Income Recognition. Interest income on loans and leases is computed using the effective interest method. Loan and lease origination fees and certain direct loan and lease origination costs are deferred, and the net amount is recognized as an adjustment to the yield on the related loans and leases over the contractual life of the loans and leases. In circumstances in which fees and costs substantially offset each other for a type or group of loans or leases, the fees and costs are recognized as earned or incurred.
	Loan and lease servicing fees are recognized over the contractual term of the loan or lease in relation to the timing of services performed.
	Common Stock Repurchases
	Treasury Stock Repurchases. Repurchases of Susquehanna common stock that are available for reissue are recorded at cost as Treasury stock and are a reduction to shareholders' equity.
	Repurchased and Retired. Repurchases of Susquehanna common stock that are retired and no longer available for reissue, are recorded at cost in which the reacquired shares reduce outstanding Common stock and Additional paid-in capital.
Use Of Estimates	'
	Use of Estimates
	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported and contingent amounts of assets and liabilities as of the date of the balance sheet and reported amounts of revenues and expenses during the reporting periods. Actual results could differ significantly from those estimates. Material estimates that are particularly susceptible to significant change relate to the determination of the allowance for loan and lease losses; the fair value of financial instruments, such as loans, investment securities, and derivatives; measurement and assessment of goodwill and intangible assets; and, income tax assets, liabilities and expenses.
Recently Adopted Accounting Guidance	'
	Recently Adopted Accounting Guidance
	In February 2013, FASB issued ASU 2013-02, Comprehensive Income (Topic 220) – Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income. This ASU requires entities to disclose information regarding reclassification adjustments from accumulated other comprehensive income in their financial statements in a single note or on the face of the financial statements. ASU 2013-02 is effective for interim and annual reporting periods beginning after December 15, 2012. The adoption of this guidance, in the first quarter of 2013, did not have a material impact on results of operations or financial condition, however did result in additional disclosures. For more information about these disclosures, refer to Note 8. Accumulated Other Comprehensive Income.
	In July 2013, FASB issued ASU 2013-10, Derivatives and Hedging (Topic 815) – Inclusion of the Fed Funds Effective Swap Rate (or Overnight Index Swap Rate) as a Benchmark Interest Rate for Hedge Accounting Purposes. This ASU permits the Fed Funds Effective Swap Rate to be used as a U.S. benchmark interest rate for hedge accounting purposes under Topic 815, in addition to U.S. Treasury interest rates and the London Interbank Offered Rate. The amendment also removes the restriction on using different benchmark rates for similar hedges. The adoption of this guidance, in the third quarter of 2013, did not have a material impact on results of operations, financial condition, or disclosures. For more information, refer to Note 13. Fair Value Disclosures.
	In July 2013, FASB issued ASU 2013-11, Income Taxes (Topic 740) – Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists. This ASU provides clarifying guidance on the presentation of unrecognized tax benefits to better reflect the manner in which an entity would settle at the reporting date any additional income taxes that would result from the disallowance of a tax position when net operating loss carryforwards, similar tax losses, or tax credit carryforwards exist. ASU 2013-11 is effective for interim and annual reporting periods beginning after December 15, 2013. The adoption of this amendment, in the first quarter of 2014, did not have a material impact on results of operations or financial condition.
Recently Issued Accounting Guidance	'
	Recently Issued Accounting Guidance
	In January 2014, FASB issued ASU 2014-01, Investments – Equity Method and Joint Ventures (Topic 323) – Accounting for Investments in Qualified Affordable Housing Projects. This ASU provides guidance on accounting for investments by a reporting entity in flow-through limited liability entities that manage or invest in affordable housing projects that qualify for the low-income housing tax credit. ASU 2014-01 is effective for interim and annual reporting periods beginning after December 15, 2014. The adoption of this amendment is not expected to have a material impact on the financial condition or results of operations.
	In January 2014, FASB issued ASU 2014-04, Receivables – Troubled Debt Restructurings by Creditors (Subtopic 310-40) – Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure. This ASU clarifies when a creditor should be considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan such that the loan should be derecognized and the real estate property recognized. ASU 2014-04 is effective for interim and annual reporting periods beginning after December 15, 2014. The adoption of this amendment is not expected to have a material impact on the financial condition or results of operations.
	In May 2014, FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). This guidance supersedes the revenue recognition requirements in Accounting Standards Codification Topic 605, Revenue Recognition, and most industry-specific guidance throughout the Accounting Standards Codification. The guidance requires an entity to recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. This guidance is effective for interim and annual reporting periods beginning after December 15, 2016. Susquehanna is currently evaluating this amendment to determine the impact on financial condition and results of operations.
	In August 2014, FASB issued ASU 2014-14, Receivables – Troubled Debt Restructurings by Creditors (Subtopic 310-40) – Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure. This ASU provides guidance on classification of certain foreclosed mortgage loans held by creditors that are either fully or partially guaranteed under government programs. ASU 2014-14 is effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2014. The adoption of this amendment is not expected to have a material impact on the financial condition or results of operations.
	In August 2014, FASB issued ASU 2014-15, Presentation of Financial Statements – Going Concern (Subtopic 205-40) – Disclosure of Uncertainties about an Entity's Ability to Continue as a Going Concern. This ASU provides guidance about management's responsibility to evaluate whether there is substantial doubt about an entity's ability to continue as a going concern and to provide related footnote disclosures. ASU 2014-15 is effective for the annual period ending after December 15, 2016, and for annual and interim periods thereafter. The adoption of this amendment is not expected to have a material impact on the financial condition or results of operations.

Investment_Securities_Tables

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2014
Investment Securities [Abstract]	'
Amortized Cost and Fair Values of Investment Securities	'
								Gross			Gross
					Amortized			Unrealized			Unrealized			Fair
	At September 30, 2014				Cost			Gains			Losses			Value
	Available-for-sale:
		U.S. Government agencies			$	93,712		$	135		$	131		$	93,716
		Obligations of states and political subdivisions				375,529			21,471			657			396,343
		Agency residential mortgage-backed securities				1,630,197			16,159			11,057			1,635,299
		Non-agency residential mortgage-backed securities				307			1			4			304
		Commercial mortgage-backed securities				5,736			104			3			5,837
		Other structured financial products				24,562			0			12,801			11,761
		Other debt securities				24,078			941			98			24,921
						2,154,121			38,811			24,751			2,168,181
		Other equity securities				24,577			745			888			24,434
	Total available-for-sale securities				$	2,178,698		$	39,556		$	25,639		$	2,192,615
								Gross			Gross
					Amortized			Unrealized			Unrealized			Fair
	At December 31, 2013				Cost			Gains			Losses			Value
	Available-for-sale:
		U.S. Government agencies			$	110,227		$	343		$	422		$	110,148
		Obligations of states and political subdivisions				389,199			13,386			4,075			398,510
		Agency residential mortgage-backed securities				1,786,133			12,163			20,104			1,778,192
		Non-agency residential mortgage-backed securities				572			1			8			565
		Commercial mortgage-backed securities				8,568			166			0			8,734
		Other structured financial products				25,038			0			13,741			11,297
		Other debt securities				43,156			1,487			557			44,086
						2,362,893			27,546			38,907			2,351,532
		Other equity securities				24,318			557			1,183			23,692
	Total available-for-sale securities				$	2,387,211		$	28,103		$	40,090		$	2,375,224
Amortized Cost and Fair Value of Total Debt Securities	'
						September 30, 2014						December 31, 2013
						Amortized			Fair			Amortized			Fair
						Cost			Value			Cost			Value
		Securities available for sale:
			Within one year			$	33,572		$	34,014		$	8,870		$	9,005
			After one year but within five years				108,112			110,911			129,176			130,091
			After five years but within ten years				909,907			919,143			945,637			946,754
			After ten years				1,102,530			1,104,113			1,279,210			1,265,682
				Total		$	2,154,121		$	2,168,181		$	2,362,893		$	2,351,532
Gross Realized Gains and Gross Realized Losses on Available-for-Sale Securities	'
				Available-for-sale Securities
				Three Months Ended September 30,						Nine Months Ended September 30,
				2014			2013			2014			2013
		Gross gains		$	0		$	2		$	3,364		$	435
		Gross losses			0			0			-79			-1
		Other-than-temporary impairment			0			0			0			-485
		Net gains		$	0		$	2		$	3,285		$	-51
Gross Unrealized Losses and Fair Values by Investment and Length of Time of Securities	'
				Less than 12 Months						12 Months or More						Total
				Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
	30-Sep-14			Value			Losses			Value			Losses			Value		Losses
	U.S. Government agencies			$	36,477		$	83		$	1,952		$	48		$	38,429	$	131
	Obligations of states and political subdivisions				0			0			52,383			657			52,383		657
	Agency residential mortgage-backed securities				280,503			2,107			317,208			8,950			597,711		11,057
	Non-agency residential mortgage-backed securities				0			0			278			4			278		4
	Commercial mortgage-backed securities				1,946			3			0			0			1,946		3
	Other structured financial products				0			0			11,761			12,801			11,761		12,801
	Other debt securities				0			0			5,148			98			5,148		98
	Other equity securities				0			0			1,577			888			1,577		888
				$	318,926		$	2,193		$	390,307		$	23,446		$	709,233	$	25,639
				Less than 12 Months						12 Months or More						Total
				Fair			Unrealized			Fair			Unrealized			Fair		Unrealized
	31-Dec-13			Value			Losses			Value			Losses			Value		Losses
	U.S. Government agencies			$	68,111		$	422		$	0		$	0		$	68,111	$	422
	Obligations of states and political subdivisions				73,895			3,910			7,025			165			80,920		4,075
	Agency residential mortgage-backed securities				1,030,987			20,104			0			0			1,030,987		20,104
	Non-agency residential mortgage-backed securities				530			8			0			0			530		8
	Other structured financial products				0			0			11,297			13,741			11,297		13,741
	Other debt securities				0			0			6,476			557			6,476		557
	Other equity securities				19,111			286			1,619			897			20,730		1,183
				$	1,192,634		$	24,730		$	26,417		$	15,360		$	1,219,051	$	40,090
Credit Losses on Non-Agency Residential Mortgage-Backed Securities	'
	Credit Losses on Non-agency Residential Mortgage-backed and Other Equity Securities for which a Portion of an
	Other-than-temporary Impairment was Recognized in Other Comprehensive Income
					Three Months Ended
					September 30,
					2014						2013
								Equity						Equity
					RMBS			Securities			RMBS			Securities
	Balance - beginning of period				$	0		$	609		$	1,026		$	609
	Additions:
		Amount related to credit losses for which an other-than-
			temporary impairment was not previously recognized			0			0			0			0
		Additional amount related to credit losses for which an other-than-
			temporary impairment was previously recognized			0			0			0			0
	Deductions:
		Realized losses				0			0			26			0
	Balance - end of period				$	0		$	609		$	1,000		$	609
					Nine Months Ended
					September 30,
					2014						2013
								Equity						Equity
					RMBS			Securities			RMBS			Securities
	Balance - beginning of period				$	0		$	609		$	768		$	512
	Additions:
		Amount related to credit losses for which an other-than-
			temporary impairment was not previously recognized			0			0			325			0
		Additional amount related to credit losses for which an other-than-
			temporary impairment was previously recognized			0			0			63			97
	Deductions:
		Realized losses				0			0			156			0
	Balance - end of period				$	0		$	609		$	1,000		$	609
Significant Assumptions of Other-Than-Temporarily Impaired Securities	'
				Weighted-average (%)
				September 30,
				2014 (1)		2013
			Conditional repayment rate (2)	N/A		10.60%
			Loss severity (3)	N/A		37.80%
			Conditional default rate (4)	N/A		3.60%
	-1	Not applicable as the related securities were sold during 2013.
	-2	Conditional repayment rate represents a rate equal to the proportion of principal balance paid off voluntarily over a certain period of time on an annualized basis.
	-3	Loss severity rates are projected by considering collateral characteristics such as current loan-to-value, original creditworthiness of borrowers (FICO score) and geographic concentration.
	-4	Conditional default rate is an annualized rate of default on a group of mortgages, and represents the percentage of outstanding principal balances in the pool that are in default, which typically equates to the borrower being past due 60 days, 90 days, or possibly already in the foreclosure process.
Present Value of Expected Cash Flows for Company's Specific Class and Subordinate Classes	'
		The present value of the expected cash flows for Susquehanna’s specific class and subordinate classes, as well as additional
	information about the pooled trust preferred securities, are included in the following tables.
	As of September 30, 2014			Pooled Trust #1			Pooled Trust #2			Pooled Trust #3			Pooled Trust #4
	Recorded investment			$	3,000		$	6,981		$	7,831		$	6,750
	Fair value				1,308			3,967			4,428			2,058
	Unrealized loss			$	-1,692		$	-3,014		$	-3,403		$	-4,692
	Class			B			B			B			A2L
	Class face value			$	35,000		$	58,375		$	86,900		$	45,500
	Present value of expected cash flows
		for class noted above and all
		subordinated classes (1)		$	180,717		$	196,316		$	325,424		$	167,181
	Lowest credit rating assigned			D			B3			B1			Ca
	Original collateral			$	623,984		$	501,470		$	700,535		$	487,680
	Performing collateral				384,342			318,814			478,061			268,100
	Actual defaults				40,400			55,580			29,000			83,500
	Actual deferrals				28,500			75,430			70,650			70,580
	Projected future defaults				36,582			42,626			44,731			26,711
	Actual defaults as a % of original
		collateral			6.50%			11.10%			4.10%			17.10%
	Actual deferrals as a % of original
		collateral (2)			4.60%			15.00%			10.10%			14.50%
	Actual defaults and deferrals as a % of
		original collateral			11.10%			26.10%			14.20%			31.60%
	Projected future defaults as a % of
		original collateral (3)			5.90%			8.50%			6.40%			5.50%
	Actual institutions deferring and
		defaulted as a % of total institutions			15.60%			31.50%			20.60%			38.10%
	Projected future defaults as a % of
		performing collateral plus
		deferrals			8.90%			10.80%			8.20%			7.90%
	As of September 30, 2013			Pooled Trust #1			Pooled Trust #2			Pooled Trust #3			Pooled Trust #4
	Recorded investment			$	3,000		$	7,183		$	8,116		$	6,750
	Fair value				1,400			3,654			4,081			2,309
	Unrealized loss			$	-1,600		$	-3,529		$	-4,035		$	-4,441
	Class			B			B			B			A2L
	Class face value			$	35,000		$	59,409		$	89,268		$	45,500
	Present value of expected cash flows
		for class noted above and all
		subordinated classes (1)		$	172,482		$	194,406		$	305,868		$	153,932
	Lowest credit rating assigned			D			Ca			Ca			Ca
	Original collateral			$	623,984		$	501,470		$	700,535		$	487,680
	Performing collateral				393,342			299,934			472,261			273,488
	Actual defaults				41,600			51,580			44,000			75,357
	Actual deferrals				34,300			98,310			93,650			93,080
	Projected future defaults				41,274			45,777			49,510			42,236
	Actual defaults as a % of original
		collateral			6.70%			10.30%			6.30%			15.50%
	Actual deferrals as a % of original
		collateral (2)			5.50%			19.60%			13.40%			19.10%
	Actual defaults and deferrals as a % of
		original collateral			12.20%			29.90%			19.70%			34.60%
	Projected future defaults as a % of
		original collateral (3)			6.60%			9.10%			7.10%			8.70%
	Actual institutions deferring and
		defaulted as a % of total institutions			16.90%			34.50%			24.60%			40.90%
	Projected future defaults as a % of
		performing collateral plus
		deferrals			9.70%			11.50%			8.70%			11.50%
	-1	Susquehanna determines whether it expects to recover the entire amortized cost basis by comparing the present value of the expected cash flows to be collected with the amortized cost basis. As of September 30, 2014 and 2013, the present value of the current estimated cash flows is equal to or greater than the book value of the trust preferred securities held. Consequently, there is no credit-related other-than-temporary impairment required to be recognized.
	-2	Includes current interest deferrals for the quarter for those institutions deferring as of the date of the assessment of the other-than-temporary impairment. Current deferrals are assumed to continue for twenty quarters, the full contractually permitted deferral period, if the institutions are not projected to default prior to that time.
	-3	Includes those institutions that are performing but are not projected to continue to perform and includes those institutions that are currently deferring interest that are projected to default, based upon third-party proprietary valuation methodology used to determine future defaults. Creditworthiness of each underlying issue in the collateralized debt obligation is determined using publicly available data.

Loans_and_Leases_Tables

Loans and Leases (Tables)	9 Months Ended
	Sep. 30, 2014
Loans and Leases Receivable Disclosure [Abstract]	'
Loans And Leases, Net Of Deferred Costs And Fees	'
	Loans and Leases, Net of Deferred Costs and Fees
						September 30,			December 31,
						2014			2013
		Commercial, financial, and agricultural				$	2,362,201		$	2,394,847
		Real estate - construction					817,492			735,877
		Real estate secured - residential					4,172,943			4,204,430
		Real estate secured - commercial					4,016,635			4,068,816
		Consumer					730,687			953,000
		Leases					1,325,763			1,219,116
				Total loans and leases		$	13,425,721		$	13,576,086
		Originated loans and leases				$	11,993,169		$	11,930,946
		Purchased loans and leases					1,432,552			1,645,140
				Total loans and leases		$	13,425,721		$	13,576,086
		Nonaccrual loans and leases				$	109,506		$	100,815
		Loans and leases contractually past due 90 days
			and still accruing				10,303			9,757
		Troubled debt restructurings					42,418			72,133
		Deferred origination costs, net of fees					13,943			21,216
		All overdrawn deposit accounts, reclassified
			as loans and evaluated for collectability				2,483			2,918
Net Investment In Direct Financing Leases	'
		A summary of our net investment in direct lease financing is presented below.
	Net Investment in Direct Financing Leases
							September 30,			December 31,
							2014			2013
			Minimum lease payments receivable				$	666,191		$	667,365
			Estimated guaranteed residual value of leases					742,443			634,875
			Unearned income under lease contracts					-82,871			-83,124
					Total leases		$	1,325,763		$	1,219,116
Credit Quality Indicators Credit Exposure	'
		The following tables present Susquehanna's credit quality indicators by internally assigned grading and by payment activity at
	September 30, 2014 and December 31, 2013.
	Credit Quality Indicators, at September 30, 2014
		Commercial Credit Exposure
			Credit-risk Profile by Internally Assigned Grade
											Real Estate -			Total
								Real Estate -			Secured -			Commercial
					Commercial			Construction (1)			Commercial (2)			Credit Exposure
	Originated loans and leases
		Grade:
			Pass (3)		$	2,136,043		$	590,503		$	3,696,591		$	6,423,137
			Special mention (4)			49,338			27,060			155,342			231,740
			Substandard (5)			64,486			28,867			172,363			265,716
				Total	$	2,249,867		$	646,430		$	4,024,296		$	6,920,593
	Purchased loans and leases
		Grade:
			Pass (3)		$	95,907		$	21,069		$	658,615		$	775,591
			Special mention (4)			10,608			20,394			63,657			94,659
			Substandard (5)			5,819			11,024			101,072			117,915
				Total	$	112,334		$	52,487		$	823,344		$	988,165
	Total loans and leases
		Grade:
			Pass (3)		$	2,231,950		$	611,572		$	4,355,206		$	7,198,728
			Special mention (4)			59,946			47,454			218,999			326,399
			Substandard (5)			70,305			39,891			273,435			383,631
				Total	$	2,362,201		$	698,917		$	4,847,640		$	7,908,758
		Other Credit Exposure
			Credit-risk Profile based on Payment Activity
					Real Estate -
					Secured -									Total Other
					Residential			Consumer			Leases			Credit Exposure
	Originated loans and leases
		Performing			$	3,003,259		$	725,254		$	1,324,733		$	5,053,246
		Nonperforming (6)				18,066			234			1,030			19,330
			Total		$	3,021,325		$	725,488		$	1,325,763		$	5,072,576
	Purchased loans and leases
		Performing			$	429,184		$	5,194		$	0		$	434,378
		Nonperforming (6)				10,004			5			0			10,009
			Total		$	439,188		$	5,199		$	0		$	444,387
	Total loans and leases
		Performing			$	3,432,443		$	730,448		$	1,324,733		$	5,487,624
		Nonperforming (6)				28,070			239			1,030			29,339
			Total		$	3,460,513		$	730,687		$	1,325,763		$	5,516,963
	Credit Quality Indicators, at December 31, 2013
		Commercial Credit Exposure
			Credit-risk Profile by Internally Assigned Grade
											Real Estate -			Total
								Real Estate -			Secured -			Commercial
					Commercial			Construction (1)			Commercial (2)			Credit Exposure
	Originated loans and leases
		Grade:
			Pass (3)		$	2,133,884		$	478,097		$	3,658,875		$	6,270,856
			Special mention (4)			75,162			33,907			168,464			277,533
			Substandard (5)			60,168			30,583			194,799			285,550
				Total	$	2,269,214		$	542,587		$	4,022,138		$	6,833,939
	Purchased loans and leases
		Grade:
			Pass (3)		$	108,898		$	25,070		$	750,241		$	884,209
			Special mention (4)			4,220			19,811			62,208			86,239
			Substandard (5)			12,515			22,247			130,408			165,170
				Total	$	125,633		$	67,128		$	942,857		$	1,135,618
	Total loans and leases
		Grade:
		Pass (3)		$	2,242,782		$	503,167		$	4,409,116		$	7,155,065
		Special mention (4)			79,382			53,718			230,672			363,772
		Substandard (5)			72,683			52,830			325,207			450,720
			Total	$	2,394,847		$	609,715		$	4,964,995		$	7,969,557
	Other Credit Exposure
		Credit-risk Profile based on Payment Activity
				Real Estate -
				Secured -									Total Other
				Residential			Consumer			Leases			Credit Exposure
Originated loans and leases
	Performing			$	2,914,547		$	945,379		$	1,217,629		$	5,077,555
	Nonperforming (6)				16,937			1,028			1,487			19,452
		Total		$	2,931,484		$	946,407		$	1,219,116		$	5,097,007
Purchased loans and leases
	Performing			$	491,922		$	6,591		$	0		$	498,513
	Nonperforming (6)				11,007			2			0			11,009
		Total		$	502,929		$	6,593		$	0		$	509,522
Total loans and leases
	Performing			$	3,406,469		$	951,970		$	1,217,629		$	5,576,068
	Nonperforming (6)				27,944			1,030			1,487			30,461
		Total		$	3,434,413		$	953,000		$	1,219,116		$	5,606,529
-1	Includes only construction loans granted to commercial customers. Construction loans for individuals are included in Real Estate – Secured – Residential, below.
-2	Includes loans obtained for commercial purposes that are also secured by residential real estate.
-3	Includes loans identified as having acceptable risk, which are loans for which the possibility of loss is considered unlikely.
-4	Includes loans considered potentially weak; however, no loss of principal or interest is anticipated.
-5	Includes loans that are inadequately protected by the current net-worth and paying capacity of the borrower or by the collateral pledged, if any. Loss of principal or interest is considered reasonably possible or likely.
-6	Includes loans that are on nonaccrual status or past due ninety days or more.
Age Analysis of Past Due Financing Receivables	'
		The following tables detail the age analysis of Susquehanna's past due financing receivables as of September 30, 2014 and December 31, 2013.
	Age Analysis of Past Due Financing Receivables, as of September 30, 2014
		Financing Receivables that are Accruing
																		Total
			30-59 Days			60-89 Days			90 Days			Total						Financing
			Past Due			Past Due			and Greater			Past Due			Current			Receivables
	Commercial		$	2,157		$	974		$	65		$	3,196		$	2,335,884		$	2,339,080
	Real estate - construction			2,600			87			0			2,687			807,580			810,267
	Real estate secured - residential			7,866			4,692			9,170			21,728			4,127,562			4,149,290
	Real estate secured - commercial			3,728			1,218			822			5,768			3,956,383			3,962,151
	Consumer			4,555			1,407			199			6,161			724,486			730,647
	Leases			817			117			47			981			1,323,799			1,324,780
		Total	$	21,723		$	8,495		$	10,303		$	40,521		$	13,275,694		$	13,316,215
	Originated loans and leases		$	19,146		$	7,398		$	5,565		$	32,109		$	11,868,687		$	11,900,796
	Purchased loans and leases			2,577			1,097			4,738			8,412			1,407,007			1,415,419
		Total	$	21,723		$	8,495		$	10,303		$	40,521		$	13,275,694		$	13,316,215
		Financing Receivables that are Nonaccruing
																		Total
			30-59 Days			60-89 Days			90 Days			Total						Financing
			Past Due			Past Due			and Greater			Past Due			Current			Receivables
	Commercial		$	4,235		$	708		$	10,090		$	15,033		$	8,088		$	23,121
	Real estate - construction			0			87			3,675			3,762			3,463			7,225
	Real estate secured - residential			512			472			15,734			16,718			6,935			23,653
	Real estate secured - commercial			1,206			909			34,029			36,144			18,340			54,484
	Consumer			0			0			0			0			40			40
	Leases			0			85			30			115			868			983
		Total	$	5,953		$	2,261		$	63,558		$	71,772		$	37,734		$	109,506
	Originated loans and leases		$	5,658		$	2,131		$	51,740		$	59,529		$	32,844		$	92,373
	Purchased loans and leases			295			130			11,818			12,243			4,890			17,133
		Total	$	5,953		$	2,261		$	63,558		$	71,772		$	37,734		$	109,506
	Age Analysis of Past Due Financing Receivables, as of December 31, 2013
		Financing Receivables that are Accruing
																		Total
			30-59 Days			60-89 Days			90 Days			Total						Financing
			Past Due			Past Due			and Greater			Past Due			Current			Receivables
	Commercial		$	3,640		$	518		$	127		$	4,285		$	2,373,735		$	2,378,020
	Real estate - construction			1,631			903			418			2,952			719,695			722,647
	Real estate secured - residential			27,441			6,223			7,274			40,938			4,140,127			4,181,065
	Real estate secured - commercial			11,583			1,840			667			14,090			4,008,579			4,022,669
	Consumer			8,664			1,537			983			11,184			941,769			952,953
	Leases			4,275			368			288			4,931			1,212,986			1,217,917
		Total	$	57,234		$	11,389		$	9,757		$	78,380		$	13,396,891		$	13,475,271
	Originated loans and leases		$	46,031		$	9,381		$	7,302		$	62,714		$	11,787,333		$	11,850,047
	Purchased loans and leases			11,203			2,008			2,455			15,666			1,609,558			1,625,224
		Total	$	57,234		$	11,389		$	9,757		$	78,380		$	13,396,891		$	13,475,271
		Financing Receivables that are Nonaccruing
																		Total
			30-59 Days			60-89 Days			90 Days			Total						Financing
			Past Due			Past Due			and Greater			Past Due			Current			Receivables
	Commercial		$	4,832		$	855		$	4,850		$	10,537		$	6,290		$	16,827
	Real estate - construction			2,176			788			5,320			8,284			4,946			13,230
	Real estate secured - residential			609			497			16,518			17,624			5,741			23,365
	Real estate secured - commercial			1,320			3,551			19,952			24,823			21,324			46,147
	Consumer			0			0			0			0			47			47
	Leases			0			199			148			347			852			1,199
		Total	$	8,937		$	5,890		$	46,788		$	61,615		$	39,200		$	100,815
	Originated loans and leases		$	8,205		$	3,806		$	39,553		$	51,564		$	29,335		$	80,899
	Purchased loans and leases			732			2,084			7,235			10,051			9,865			19,916
		Total	$	8,937		$	5,890		$	46,788		$	61,615		$	39,200		$	100,815
Impaired Loans	'
	Impaired Loans at September 30, 2014
																	Average
								Recorded									Recorded
					Unpaid			Investment						Related			Investment			Interest
					Principal			in Impaired			Related			Specific			in Impaired			Income
					Balance			Loans			Charge-offs			Allowance			Loans (2)			Recognized
	Impaired loans without a related reserve:
		Commercial, financial, and agricultural			$	16,536		$	13,622		$	2,914					$	13,666		$	152
		Real estate - construction				8,113			7,514			599						8,220			73
		Real estate secured - residential				21,582			21,408			174						17,743			232
		Real estate secured - commercial				128,593			105,768			22,825						87,473			1,373
		Consumer				0			0			0						0			0
			Total impaired loans without a
				related reserve		174,824			148,312	-1		26,512						127,102			1,830
	Impaired loans with a related reserve:
		Commercial, financial, and agricultural				13,156			13,156			0		$	6,116			13,073			162
		Real estate - construction				8,173			3,136			5,037			655			3,330			55
		Real estate secured - residential				23,818			22,397			1,421			3,209			5,355			280
		Real estate secured - commercial				30,931			20,095			10,836			2,300			26,591			497
		Consumer				1,079			1,051			28			114			33			28
			Total impaired loans with a
				related reserve		77,157			59,835			17,322			12,394			48,382			1,022
	Total impaired loans:
		Commercial, financial, and agricultural				29,692			26,778			2,914			6,116			26,739			314
		Real estate - construction				16,286			10,650			5,636			655			11,550			128
		Real estate secured - residential				45,400			43,805			1,595			3,209			23,098			512
		Real estate secured - commercial				159,524			125,863			33,661			2,300			114,064			1,870
		Consumer				1,079			1,051			28			114			33			28
				Total impaired loans	$	251,981		$	208,147		$	43,834		$	12,394		$	175,484		$	2,852
	Impaired loans without a related reserve:
		Originated loans and leases			$	70,279		$	46,640		$	23,639					$	26,627		$	455
		Purchased loans and leases				104,545			101,672			2,873						100,475			1,375
			Total impaired loans without a
				related reserve		174,824			148,312			26,512						127,102			1,830
	Impaired loans with a related reserve:
		Originated loans and leases				71,261			54,672			16,589		$	10,780			45,605			969
		Purchased loans and leases				5,896			5,163			733			1,614			2,777			53
			Total impaired loans with a
				related reserve		77,157			59,835			17,322			12,394			48,382			1,022
	Total impaired loans:
		Originated loans and leases				141,540			101,312			40,228			10,780			72,232			1,424
		Purchased loans and leases (3)				110,441			106,835			3,606			1,614			103,252			1,428
				Total impaired loans	$	251,981		$	208,147		$	43,834		$	12,394		$	175,484		$	2,852
	-1	$34,632 of the $148,312 total impaired loans without a related reserve represents loans that had been written down to the fair value of the underlying collateral adjusted for selling costs through direct charge-offs of $26,512.
	-2	Average recorded investment in impaired loans is calculated on a quarterly basis using daily balances.
	-3	$5,163 of the $106,835 purchased impaired loans were subsequently impaired after being acquired.
	Impaired Loans at December 31, 2013
																	Average
								Recorded									Recorded
					Unpaid			Investment						Related			Investment			Interest
					Principal			in Impaired			Related			Specific			in Impaired			Income
					Balance			Loans			Charge-offs			Allowance			Loans (2)			Recognized
	Impaired loans without a related reserve:
		Commercial, financial, and agricultural			$	31,196		$	28,034		$	3,162					$	29,316		$	390
		Real estate - construction				17,851			14,215			3,636						14,715			140
		Real estate secured - residential				28,308			27,645			663						27,800			297
		Real estate secured - commercial				143,664			125,139			18,525						125,003			2,076
		Consumer				0			0			0						14			0
			Total impaired loans without a
				related reserve		221,019			195,033	-1		25,986						196,848			2,903
	Impaired loans with a related reserve:
		Commercial, financial, and agricultural				6,864			5,879			985		$	3,008			5,893			154
		Real estate - construction				15,202			7,288			7,914			1,819			5,831			228
	Real estate secured - residential				37,499			35,153			2,346			4,753			35,273			554
	Real estate secured - commercial				27,238			17,529			9,709			3,827			16,546			325
	Consumer				1,992			1,992			0			218			2,042			56
		Total impaired loans with a
			related reserve		88,795			67,841			20,954			13,625			65,585			1,317
Total impaired loans:
	Commercial, financial, and agricultural				38,060			33,913			4,147			3,008			35,209			544
	Real estate - construction				33,053			21,503			11,550			1,819			20,546			368
	Real estate secured - residential				65,807			62,798			3,009			4,753			63,073			851
	Real estate secured - commercial				170,902			142,668			28,234			3,827			141,549			2,401
	Consumer				1,992			1,992			0			218			2,056			56
			Total impaired loans	$	309,814		$	262,874		$	46,940		$	13,625		$	262,433		$	4,220
Impaired loans without a related reserve:
	Originated loans and leases			$	88,900		$	66,086		$	22,814					$	65,341		$	749
	Purchased loans and leases				132,119			128,947			3,172						131,507			2,154
		Total impaired loans without a
			related reserve		221,019			195,033			25,986						196,848			2,903
Impaired loans with a related reserve:
	Originated loans and leases				78,015			58,343			19,672		$	11,612			55,881			1,172
	Purchased loans and leases				10,780			9,498			1,282			2,013			9,704			145
		Total impaired loans with a
			related reserve		88,795			67,841			20,954			13,625			65,585			1,317
Total impaired loans:
	Originated loans and leases				166,915			124,429			42,486			11,612			121,222			1,921
	Purchased loans and leases (3)				142,899			138,445			4,454			2,013			141,211			2,299
			Total impaired loans	$	309,814		$	262,874		$	46,940		$	13,625		$	262,433		$	4,220
-1	$43,363 of the $195,033 total impaired loans without a related reserve represents loans that had been written down to the fair value of the underlying collateral adjusted for selling costs through direct charge-offs of $25,986.
-2	Average recorded investment in impaired loans is calculated on a quarterly basis using daily balances.
-3	$9,498 of the $138,445 purchased impaired loans were subsequently impaired after being acquired.
Troubled Debt Restructurings	'
		The following table presents Troubled Debt Restructurings (TDR's), by class segment:
					September 30,			December 31,
					2014			2013
			Commercial, financial, and agricultural		$	4,044		$	6,885
			Real estate - construction			319			615
			Real estate secured - residential			20,231			31,623
			Real estate secured - commercial			16,780			31,295
			Consumer			1,044			1,715
				Total performing TDRs		42,418			72,133
			Nonperforming TDRs (1)			19,522			22,676
				Total TDRs	$	61,940		$	94,809
			Performing TDRs			68%			76%
			Nonperforming TDRs			32%			24%
	-1	These loans are included in the 90 day past due and nonaccrual categories.
		The following table provides detail of TDR balance and activity for the periods presented:
						Three months ended						Nine months ended
						September 30,						September 30,
						2014			2013			2014			2013
	Performing TDRs, beginning of period					$	40,938		$	63,822		$	72,133		$	67,775
		New restructurings as TDRs					2,684			13,336			6,767			38,405
		Repayments and payoffs					-848			-830			-1,853			-4,080
		Charge-offs after restructuring					-26			-9			-455			-6,734
		Transfer to nonaccrual, past due 90 days or greater, nonperforming TDRs					-281			-5,407			-5,969			-11,449
		Transfer out of TDR status (1)					-49			-938			-28,204			-13,551
		Other, net					0			1			-1			-391	-2
	Performing TDRs, end of period					$	42,418		$	69,975		$	42,418		$	69,975
	Nonperforming TDRs (3), end of period					$	19,522		$	22,166		$	19,522		$	22,166
	Performing TDRs						68%			76%			68%			76%
	Nonperforming TDRs						32%			24%			32%			24%
	-1	Loans that have performed in accordance with the renegotiated terms for a minimum of six consecutive months with payments and at the time of renegotiation the loan's interest rate represented a then current market interest rate for a loan of similar risk.
	-2	Includes $203 transferred to Other Real Estate Owned in 2013.
	-3	Included in Age Analysis of Past Due Financing Receivables.
						Recorded Investment
											Post-			Financial Effect of
								Pre-Modification			Modification			Modification
						Number of		Recorded			Recorded			Recorded
	Three months ended September 30, 2014					Loans		Investment			Investment			Investment(1)			Interest (2)
	Troubled Debt Restructurings
		Commercial, financial, and agricultural
			Bankruptcies and maturity date extensions			3		$	124		$	124		$	0		$	0
			Combination of modification types			0			0			0			0			0
		Real estate - construction
			Bankruptcies and maturity date extensions			0			0			0			0			0
			Combination of modification types			0			0			0			0			0
		Real estate secured - residential
			Bankruptcies and maturity date extensions			25			2,397			2,397			0			3
			Combination of modification types			0			0			0			0			0
		Real estate secured - commercial
			Bankruptcies and maturity date extensions			0			0			0			0			0
			Combination of modification types			0			0			0			0			0
		Consumer
			Bankruptcies and maturity date extensions			20			163			163			0			0
			Combination of modification types			0			0			0			0			0
		Total				48		$	2,684		$	2,684		$	0		$	3
	Originated loans and leases					47		$	2,627		$	2,627		$	0		$	3
	Purchased loans and leases					1			57			57			0			0
		Total				48		$	2,684		$	2,684		$	0		$	3
	-1	Financial effects impacting the recorded investment include principal payments, advances, charge-offs, and capitalized past-due amounts.
	-2	Represents the present value of interest rate concessions discounted at the effective rate of the original loan.
									Number of		Recorded
									Loans		Investment
	Troubled Debt Restructurings that Subsequently
		Defaulted during the current period
		Commercial, financial, and agricultural						0		$	0
		Real estate - construction						0			0
		Real estate secured - residential						3			181
		Real estate secured - commercial						0			0
		Consumer						3			28
		Total						6		$	209
Originated loans and leases								6		$	209
Purchased loans and leases								0			0
		Total						6		$	209
					Recorded Investment
										Post-			Financial Effect of
							Pre-Modification			Modification			Modification
					Number of		Recorded			Recorded			Recorded
Three months ended September 30, 2013					Loans		Investment			Investment			Investment(1)			Interest (2)
Troubled Debt Restructurings
	Commercial, financial, and agricultural
		Bankruptcies and maturity date extensions			6		$	845		$	845		$	0		$	-6
		Combination of modification types			1			51			51			0			0
	Real estate - construction
		Bankruptcies and maturity date extensions			0			0			0			0			0
		Combination of modification types			0			0			0			0			0
	Real estate secured - residential
		Bankruptcies and maturity date extensions			37			3,715			3,715			0			0
		Combination of modification types			8			1,313			1,313			0			51
	Real estate secured - commercial
		Bankruptcies and maturity date extensions			7			7,066			7,066			0			0
		Combination of modification types			0			0			0			0			0
	Consumer
		Bankruptcies and maturity date extensions			42			320			320			0			0
		Combination of modification types			1			26			26			0			0
	Total				102		$	13,336		$	13,336		$	0		$	45
Originated loans and leases					99		$	12,962		$	12,962		$	0		$	66
Purchased loans and leases					3			374			374			0			-21
	Total				102		$	13,336		$	13,336		$	0		$	45
-1	Financial effects impacting the recorded investment include principal payments, advances, charge-offs, and capitalized past-due amounts.
-2	Represents the present value of interest rate concessions discounted at the effective rate of the original loan.
								Number of		Recorded
								Loans		Investment
Troubled Debt Restructurings that Subsequently
	Defaulted during the current period
		Commercial, financial, and agricultural						3		$	33
		Real estate - construction						1			117
		Real estate secured - residential						17			862
		Real estate secured - commercial						4			4,640
		Consumer						31			263
		Total						56		$	5,915
Originated loans and leases								53		$	5,849
Purchased loans and leases								3			66
		Total						56		$	5,915
				Recorded Investment
												Financial Effect of
						Pre-Modification			Post-Modification			Modification
				Number of		Recorded			Recorded			Recorded
Nine months ended September 30, 2014				Loans		Investment			Investment			Investment(1)			Interest (2)
Troubled Debt Restructurings
	Commercial, financial, and agricultural
		Bankruptcies and maturity date extensions		9		$	226		$	226		$	0		$	0
		Combination of modification types		0			0			0			0			0
	Real estate - construction
		Bankruptcies and maturity date extensions		0			0			0			0			0
		Combination of modification types		0			0			0			0			0
	Real estate secured - residential
		Bankruptcies and maturity date extensions		41			4,786			4,786			0			3
		Combination of modification types		7			1,100			1,100			0			-8
	Real estate secured - commercial
		Bankruptcies and maturity date extensions		0			0			0			0			0
		Combination of modification types		1			375			375			0			0
	Consumer
		Bankruptcies and maturity date extensions		37			280			280			5			0
		Combination of modification types		0			0			0			0			0
	Total			95		$	6,767		$	6,767		$	5		$	-5
Originated loans and leases				90		$	6,123		$	6,123		$	5		$	40
Purchased loans and leases				5			644			644			0			-45
	Total			95		$	6,767		$	6,767		$	5		$	-5
-1	Financial effects impacting the recorded investment include principal payments, advances, charge-offs, and capitalized past-due amounts.
-2	Represents the present value of interest rate concessions discounted at the effective rate of the original loan.
							Number of		Recorded
							Loans		Investment
Troubled Debt Restructurings that Subsequently
	Defaulted during the current period
		Commercial, financial, and agricultural					11		$	2,027
		Real estate - construction					0			0
		Real estate secured - residential					11			578
		Real estate secured - commercial					4			2,599
		Consumer					24			187
		Total					50		$	5,391
Originated loans and leases							46		$	2,745
Purchased loans and leases							4			2,646
		Total					50		$	5,391
				Recorded Investment
												Financial Effect of
						Pre-Modification			Post-Modification			Modification
				Number of		Recorded			Recorded			Recorded
Nine months ended September 30, 2013				Loans		Investment			Investment			Investment(1)			Interest (2)
Troubled Debt Restructurings
	Commercial, financial, and agricultural
		Bankruptcies and maturity date extensions		29		$	9,379		$	9,379		$	0		$	-6
		Combination of modification types		2			292			292			0			0
	Real estate - construction
		Bankruptcies and maturity date extensions		2			137			137			0			0
		Combination of modification types		0			0			0			0			0
	Real estate secured - residential
		Bankruptcies and maturity date extensions		136			12,038			12,038			0			0
		Combination of modification types		25			3,815			3,815			0			-21
	Real estate secured - commercial
		Bankruptcies and maturity date extensions		19			9,565			9,565			0			0
		Combination of modification types		1			1,436			1,436			0			-196
	Consumer
		Bankruptcies and maturity date extensions		192			1,717			1,717			0			0
		Combination of modification types		1			26			26			0			0
	Total			407		$	38,405		$	38,405		$	0		$	-223
Originated loans and leases				386		$	35,569		$	35,569		$	0		$	-159
Purchased loans and leases				21			2,836			2,836			0			-64
	Total			407		$	38,405		$	38,405		$	0		$	-223
-1	Financial effects impacting the recorded investment include principal payments, advances, charge-offs, and capitalized past-due amounts.
-2	Represents the present value of interest rate concessions discounted at the effective rate of the original loan.
							Number of		Recorded
							Loans		Investment
Troubled Debt Restructurings that Subsequently
	Defaulted during the current period
		Commercial, financial, and agricultural					15		$	7,334
		Real estate - construction					3			254
		Real estate secured - residential					30			2,152
		Real estate secured - commercial					7			5,087
		Consumer					64			468
		Total					119		$	15,295
Originated loans and leases							111		$	14,692
Purchased loans and leases							8			603
		Total					119		$	15,295
Unpaid Principal Balance And The Related Carrying Amount Of Acquired Loans	'
		The unpaid principal balance and the related carrying amount of acquired loans are as follows:
							September 30,			December 31,
							2014			2013
			Credit impaired purchased loans evaluated individually for
				incurred credit losses
					Unpaid principal balance		$	129,457		$	176,351
					Carrying amount			106,836			138,445
			Other purchased loans evaluated collectively for incurred credit
				losses
					Unpaid principal balance			1,322,877			1,509,870
					Carrying amount			1,325,716			1,506,695
			Total purchased loans
					Unpaid principal balance			1,452,334			1,686,221
					Carrying amount			1,432,552			1,645,140
Schedule Of Changes In Accretable Discount Related To The Purchased Credit Impaired Loans	'
		The changes in the accretable discount related to the purchased credit impaired loans are as follows:
				Three Months Ended						Nine Months Ended
				September 30,						September 30,
				2014			2013			2014			2013
		Balance - beginning of period		$	43,319		$	49,187		$	46,219		$	62,868
			Accretion recognized during the period		-2,309			-4,229			-8,042			-16,522
			Net reclassification from nonaccretable to accretable		0			1,481			2,833			93
		Balance - end of period		$	41,010		$	46,439		$	41,010		$	46,439

Allowance_For_Loan_Lease_Losse1

Allowance For Loan & Lease Losses (Tables)	9 Months Ended
	Sep. 30, 2014
Allowance For Loan And Lease Losses [Abstract]	'
Allowance For Credit Losses And Recorded Investment In Financing Receivables	'
			An analysis of the allowance for loan and lease losses for the three and nine months ended September 30, 2014 and 2013 are presented in the following tables:
						Three Months Ended September 30, 2014
										Real Estate		Real Estate
								Real Estate -		Secured -		Secured -
						Commercial		Construction		Residential		Commercial		Consumer		Leases		Unallocated		Total
	Allowance for credit losses:
	Balance at July 1, 2014					$	41,401	$	18,180	$	21,376	$	46,952	$	1,276	$	13,875	$	1,423	$	144,483
		Charge-offs					-9,398		-1,038		-3,020		-5,144		-891		-1,478		0		-20,969
		Recoveries					1,329		262		471		1,317		277		700		0		4,356
		Transfer for loans designated as held for sale					0		0		0		0		0		0		0		0
		Provision					12,540		-3,606		2,264		-1,359		636		-228		-1,247		9,000
	Balance at September 30, 2014					$	45,872	$	13,798	$	21,091	$	41,766	$	1,298	$	12,869	$	176	$	136,870
						Nine Months Ended September 30, 2014
										Real Estate		Real Estate
								Real Estate -		Secured -		Secured -
						Commercial		Construction		Residential		Commercial		Consumer		Leases		Unallocated		Total
	Allowance for credit losses:
	Balance at January 1, 2014					$	40,590	$	26,189	$	24,076	$	48,261	$	2,266	$	15,259	$	967	$	157,608
		Charge-offs					-23,006		-1,668		-10,140		-8,828		-3,470		-3,199		0		-50,311
		Recoveries					4,481		1,440		2,342		2,137		988		1,421		0		12,809
		Transfer for loans designated as held for sale					0		0		0		0		-1,236		0		0		-1,236
		Provision					23,807		-12,163		4,813		196		2,750		-612		-791		18,000
	Balance at September 30, 2014					$	45,872	$	13,798	$	21,091	$	41,766	$	1,298	$	12,869	$	176	$	136,870
	Balance at September 30, 2014
		Individually evaluated for impairment:
				Originated loans and leases		$	6,089	$	656	$	2,076	$	1,845	$	114	$	0			$	10,780
				Purchased loans and leases			26		0		1,133		455		0		0				1,614
					Total	$	6,115	$	656	$	3,209	$	2,300	$	114	$	0			$	12,394
		Collectively evaluated for impairment:
				Originated loans and leases		$	39,757	$	13,142	$	17,882	$	39,466	$	1,184	$	12,869	$	176	$	124,476
				Purchased loans and leases			0		0		0		0		0		0		0		0
					Total	$	39,757	$	13,142	$	17,882	$	39,466	$	1,184	$	12,869	$	176	$	124,476
	Financing receivables:
	Balance at September 30, 2014					$	2,362,201	$	817,492	$	4,172,943	$	4,016,635	$	730,687	$	1,325,763			$	13,425,721
	Balance at September 30, 2014
		Individually evaluated for impairment:
				Originated loans and leases		$	20,435	$	3,307	$	23,689	$	52,832	$	1,049	$	0			$	101,312
				Purchased loans and leases			6,344		7,343		20,116		73,030		2		0				106,835
					Total	$	26,779	$	10,650	$	43,805	$	125,862	$	1,051	$	0			$	208,147
		Collectively evaluated for impairment:
				Originated loans and leases		$	2,209,028	$	761,491	$	3,577,869	$	3,293,267	$	724,439	$	1,325,763			$	11,891,857
				Purchased loans and leases			126,394		45,351		551,269		597,506		5,197		0				1,325,717
					Total	$	2,335,422	$	806,842	$	4,129,138	$	3,890,773	$	729,636	$	1,325,763			$	13,217,574
						Three Months Ended September 30, 2013
										Real Estate		Real Estate
								Real Estate -		Secured -		Secured -
						Commercial		Construction		Residential		Commercial		Consumer		Leases		Unallocated		Total
	Allowance for credit losses:
	Balance at July 1, 2013					$	30,237	$	23,568	$	37,716	$	68,827	$	3,155	$	14,750	$	341	$	178,594
		Charge-offs					-5,892		-8,103		-4,151		-6,043		-1,051		-694		0		-25,934
		Recoveries					2,161		1,599		627		4,036		325		332		0		9,080
		Provision					4,491		6,910		-4,995		-1,602		-479		640		35		5,000
	Balance at September 30, 2013					$	30,997	$	23,974	$	29,197	$	65,218	$	1,950	$	15,028	$	376	$	166,740
						Nine Months Ended September 30, 2013
										Real Estate		Real Estate
								Real Estate -		Secured -		Secured -
						Commercial		Construction		Residential		Commercial		Consumer		Leases		Unallocated		Total
	Allowance for credit losses:
	Balance at January 1, 2013					$	30,207	$	25,171	$	41,276	$	70,053	$	3,722	$	13,341	$	250	$	184,020
		Charge-offs					-26,758		-14,036		-9,771		-11,488		-2,397		-3,015		0		-67,465
		Recoveries					6,197		3,786		1,879		6,841		886		1,596		0		21,185
		Provision					21,351		9,053		-4,187		-188		-261		3,106		126		29,000
	Balance at September 30, 2013					$	30,997	$	23,974	$	29,197	$	65,218	$	1,950	$	15,028	$	376	$	166,740
Balance at September 30, 2013
	Individually evaluated for impairment:
			Originated loans and leases		$	1,853	$	1,762	$	1,440	$	6,614	$	49	$	0			$	11,718
			Purchased loans and leases			1,276		343		1,175		792		1		0				3,587
				Total	$	3,129	$	2,105	$	2,615	$	7,406	$	50	$	0			$	15,305
	Collectively evaluated for impairment:
			Originated loans and leases		$	26,916	$	21,839	$	26,596	$	58,772	$	1,908	$	15,028	$	376	$	151,435
			Purchased loans and leases			0		0		0		0		0		0		0		0
				Total	$	26,916	$	21,839	$	26,596	$	58,772	$	1,908	$	15,028	$	376	$	151,435
Financing receivables:
Balance at September 30, 2013					$	2,273,735	$	765,246	$	4,145,522	$	4,109,329	$	935,117	$	1,147,505			$	13,376,454
Balance at September 30, 2013
	Individually evaluated for impairment:
			Originated loans and leases		$	12,236	$	13,905	$	33,910	$	64,143	$	1,730	$	0			$	125,924
			Purchased loans and leases			16,199		12,320		29,274		80,446		264		0				138,503
				Total	$	28,435	$	26,225	$	63,184	$	144,589	$	1,994	$	0			$	264,427
	Collectively evaluated for impairment:
			Originated loans and leases		$	2,133,682	$	660,317	$	3,317,817	$	3,311,119	$	926,099	$	1,147,505			$	11,496,539
			Purchased loans and leases			111,618		78,704		764,521		653,621		7,024		0				1,615,488
				Total	$	2,245,300	$	739,021	$	4,082,338	$	3,964,740	$	933,123	$	1,147,505			$	13,112,027

Goodwill_Tables

Goodwill (Tables)	9 Months Ended
	Sep. 30, 2014
Goodwill And Intangible Assets [Abstract]	'
Key Ratios to Measure Goodwill of Bank Reporting Unit for Impairment	'
				Annual		Annual
		Ratio		31-May-14		31-May-13
		Price to book		1.48x		1.57x
		Price to tangible book		1.70x		1.80x
		Price to earnings(1)		20.5x		22.1x
		-1	Last twelve months earnings.
Factors Used to Measure Goodwill in Income Approach	'
			Annual		Annual
		Factors	31-May-14		31-May-13
		Discount rate	19.50%		18.40%
		Weighted-average increase in revenues	4.20%		5.00%
		Weighted-average increase in expenses	4.70%		3.30%
Key Ratios Used to Measure Goodwill of Property and Casualty Insurance Reporting Unit for Impairment	'
			Annual		Annual
		Ratio	31-May-14		31-May-13
		Average price to book	1.34X		1.15X
		Median price to earnings	21.1X		18.1X

Deposits_Tables

Deposits (Tables)	9 Months Ended
	Sep. 30, 2014
Deposits [Abstract]	'
Schedule Of Deposits	'
	NOTE 6. Deposits
		Deposits consisted of the following at September 30, 2014 and December 31, 2013:
			September 30,		December 31,
			2014		2013
	Noninterest-bearing:
		Demand	$	1,958,308	$	1,913,526
	Interest-bearing:
		Interest-bearing demand		3,087,166		2,909,376
		Money market		3,297,699		3,144,106
		Savings		1,122,232		1,077,923
		Time		2,265,787		2,113,209
		Time of $100 or more		1,857,332		1,711,232
	Total deposits		$	13,588,524	$	12,869,372

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Loss (Tables)	9 Months Ended
	Sep. 30, 2014
Accumulated Other Comprehensive Loss [Abstract]	'
Schedule Of Accumulated Other Comprehensive Loss	'
	NOTE 8. Accumulated Other Comprehensive Loss
			The balances and changes in balances by component of accumulated other comprehensive income (loss) ("AOCI") are shown in the
	following tables:
											Unrealized				Accumulated
							Unrealized Gains (Losses) on				Gains (Losses)		Post-		Other
							Investment securities				on Cash Flow		retirement		Comprehensive
							With OTTI		All other		Hedges		Benefits		Loss
	Balance, July 1, 2014						$	-279	$	10,320	$	-16,874	$	-22,409	$	-29,242
		AOCI before reclassifications, net of tax						0		-908		396		0		-512
		Amounts reclassified from AOCI:
			Interest expense					0		0		5,574		0		5,574
			Net realized loss (gain) on sales and
				impairment of securities				0		0		0		0		0
					Total before income taxes			0		0		5,574		0		5,574
					Less: Income taxes			0		0		-1,951		0		-1,951
						Net of income taxes		0		0		3,623		0		3,623
		Net change in AOCI						0		-908		4,019		0		3,111
	Balance, September 30, 2014						$	-279	$	9,412	$	-12,855	$	-22,409	$	-26,131
	Balance, July 1, 2013						$	-750	$	-414	$	-25,437	$	-39,321	$	-65,922
		AOCI before reclassifications, net of tax						150		1,994		-2,434		0		-290
		Amounts reclassified from AOCI:
			Interest expense					0		0		5,023		0		5,023
			Net realized loss (gain) on sales and
				impairment of securities				0		-2		0		0		-2
					Total before income taxes			0		-2		5,023		0		5,021
					Less: Income taxes			0		1		-1,758		0		-1,757
						Net of income taxes		0		-1		3,265		0		3,264
		Net change in AOCI						150		1,993		831		0		2,974
	Balance, September 30, 2013						$	-600	$	1,579	$	-24,606	$	-39,321	$	-62,948
	Balance, January 1, 2014						$	-279	$	-7,195	$	-21,683	$	-22,409	$	-51,566
		AOCI before reclassifications, net of tax						0		18,742		-1,869		0		16,873
		Amounts reclassified from AOCI:
			Interest expense					0		0		16,457		0		16,457
			Net realized loss (gain) on sales and
				impairment of securities				0		-3,285		0		0		-3,285
					Total before income taxes			0		-3,285		16,457		0		13,172
					Less: Income taxes			0		1,150		-5,760		0		-4,610
						Net of income taxes		0		-2,135		10,697		0		8,562
		Net change in AOCI						0		16,607		8,828		0		25,435
	Balance, September 30, 2014						$	-279	$	9,412	$	-12,855	$	-22,409	$	-26,131
	Balance, January 1, 2013						$	-839	$	37,521	$	-34,636	$	-39,304	$	-37,258
		AOCI before reclassifications, net of tax						-76		-35,660		784		-17		-34,969
		Amounts reclassified from AOCI:
			Interest expense					0		0		14,225		0		14,225
			Net realized loss (gain) on sales and
				impairment of securities				485		-434		0		0		51
					Total before income taxes			485		-434		14,225		0		14,276
					Less: Income taxes			-170		152		-4,979		0		-4,997
						Net of income taxes		315		-282		9,246		0		9,279
		Net change in AOCI						239		-35,942		10,030		-17		-25,690
	Balance, September 30, 2013						$	-600	$	1,579	$	-24,606	$	-39,321	$	-62,948

Pension_and_Other_Postretireme1

Pension and Other Postretirement Benefits (Tables)	9 Months Ended
	Sep. 30, 2014
Benefit Plans [Abstract]	'
Net Periodic Benefit Cost	'
	NOTE 9. Pension and Other Postretirement Benefits
	Components of Net Periodic Benefit Cost
			Three Months Ended September 30,
											Other Postretirement
			Pension Benefits				SERP				Benefits
			2014		2013		2014		2013		2014		2013
	Service cost		$	0	$	1,055	$	108	$	69	$	317	$	337
	Interest cost			1,923		1,835		133		100		246		217
	Expected return on plan assets			-2,336		-2,267		0		0		0		0
	Amortization of prior service cost			0		6		57		54		29		29
	Amortization of transition obligation			0		0		0		0		0		2
	Amortization of net actuarial loss			120		884		41		52		0		42
		Net periodic postretirement benefit cost	$	-293	$	1,513	$	339	$	275	$	592	$	627
				Nine Months Ended September 30,
											Other Postretirement
			Pension Benefits				SERP				Benefits
			2014		2013		2014		2013		2014		2013
	Service cost		$	0	$	3,721	$	251	$	695	$	950	$	1,012
	Interest cost			5,768		5,423		378		304		739		651
	Expected return on plan assets			-7,009		-7,091		0		0		0		0
	Amortization of prior service cost			0		19		130		163		86		86
	Amortization of transition obligation			0		0		0		0		0		6
	Amortization of net actuarial loss			361		2,398		98		165		0		126
		Net periodic postretirement benefit cost	$	-880	$	4,470	$	857	$	1,327	$	1,775	$	1,881

Earnings_per_Share_EPS_Tables

Earnings per Share ("EPS") (Tables)	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Basic And Diluted Earnings Per Common Share	'
	NOTE 10. Earnings per Share ("EPS")
		The following tables set forth the calculation of basic and diluted EPS for the three-month and nine-month periods ended
	September 30, 2014 and 2013.
	Basic earnings per common share
			Three Months Ended September 30,				Nine Months Ended September 30,
			2014		2013		2014		2013
	Net income applicable to common shareholders		$	33,468	$	44,291	$	114,124	$	132,338
	Average common shares outstanding			184,985		187,096		186,683		186,840
	Basic earnings per common share		$	0.18	$	0.24	$	0.61	$	0.71
	Diluted earnings per common share
			Three Months Ended September 30,				Nine Months Ended September 30,
			2014		2013		2014		2013
	Net income available to common shareholders		$	33,468	$	44,291	$	114,124	$	132,338
	Average common shares outstanding			184,985		187,096		186,683		186,840
	Dilutive potential common shares			739		1,013		762		976
	Total diluted average common shares outstanding			185,724		188,109		187,445		187,816
	Diluted earnings per common share		$	0.18	$	0.24	$	0.61	$	0.7

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2014
Derivative Financial Instruments [Abstract]	'
Fair Value Of Derivative Instruments	'
	Fair Value of Derivative Instruments
			Fair Values of Derivative Instruments
			30-Sep-14
			Asset Derivatives			Liability Derivatives
			Balance Sheet			Balance Sheet
			Location	Fair Value		Location		Fair Value
	Derivatives designated as hedging instruments
		Interest rate contracts	Other assets	$	725	Other liabilities		$	17,506
	Derivatives not designated as hedging instruments
		Interest rate contracts	Other assets		21,614	Other liabilities			18,162
	Total derivatives			$	22,339			$	35,668
			Fair Values of Derivative Instruments
			31-Dec-13
			Asset Derivatives			Liability Derivatives
			Balance Sheet			Balance Sheet
			Location	Fair Value		Location		Fair Value
	Derivatives designated as hedging instruments
		Interest rate contracts	Other assets	$	1,419	Other liabilities		$	31,662
	Derivatives not designated as hedging instruments
		Interest rate contracts	Other assets		22,897	Other liabilities			18,585
	Total derivatives			$	24,316			$	50,247
Effect Of Derivative Instruments On Earnings	'
	The Effect of Derivative Instruments on Comprehensive Income
	Three Months Ended September 30, 2014
									Location of Loss	Amount of Loss
				Location of Loss		Amount of Loss			Recognized in	Recognized in
		Amount of Gain		Reclassified from		Reclassified from			Income	Income
	Derivatives in Cash Flow	Recognized		Accumulated OCI		Accumulated OCI			(Ineffective	(Ineffective
	Hedging Relationships	in OCI		into Income		into Income			Portion)	Portion)
	Interest rate contracts:	$	4,010		Interest expense	$	-5,574		Other expense	$	0
			Location of Loss	Amount of Loss
			Recognized	Recognized
	Derivatives Not Designated		in Income	in Income
	as Hedging Instruments		on Derivatives	on Derivatives
	Interest rate contracts:		Other income	$	-1,714
			Other expense		0
	Three Months Ended September 30, 2013
									Location of Loss	Amount of Loss
				Location of Loss		Amount of Loss			Recognized in	Recognized in
		Amount of Gain		Reclassified from		Reclassified from			Income	Income
	Derivatives in Cash Flow	Recognized		Accumulated OCI		Accumulated OCI			(Ineffective	(Ineffective
	Hedging Relationships	in OCI		into Income		into Income			Portion)	Portion)
	Interest rate contracts:	$	831		Interest expense	$	-5,023		Other expense	$	0
			Location of Gain	Amount of Gain
			Recognized	Recognized
	Derivatives Not Designated		in Income	in Income
	as Hedging Instruments		on Derivatives	on Derivatives
	Interest rate contracts:		Other income	$	1,545
			Other expense		0
	Nine Months Ended September 30, 2014
									Location of Loss	Amount of Loss
				Location of Loss		Amount of Loss			Recognized in	Recognized in
		Amount of Gain		Reclassified from		Reclassified from			Income	Income
	Derivatives in Cash Flow	Recognized		Accumulated OCI		Accumulated OCI			(Ineffective	(Ineffective
	Hedging Relationships	in OCI		into Income		into Income			Portion)	Portion)
	Interest rate contracts:	$	6,224		Interest expense	$	-16,457		Other expense	$	0
			Location of Loss	Amount of Loss
			Recognized	Recognized
	Derivatives Not Designated		in Income on	in Income on
	as Hedging Instruments		Derivatives	Derivatives
	Interest rate contracts:		Other income	$	-3,326
			Other expense		0
	Nine Months Ended September 30, 2013
									Location of Loss	Amount of Loss
				Location of Loss		Amount of Loss			Recognized in	Recognized in
		Amount of Gain		Reclassified from		Reclassified from			Income	Income
	Derivatives in Cash Flow	Recognized		Accumulated OCI		Accumulated OCI			(Ineffective	(Ineffective
	Hedging Relationships	in OCI		into Income		into Income			Portion)	Portion)
	Interest rate contracts:	$	10,030		Interest expense	$	-14,225		Other expense	$	0
			Location of Gain	Amount of Gain
			(Loss) Recognized	(Loss) Recognized
	Derivatives Not Designated		in Income	in Income
	as Hedging Instruments		on Derivatives	on Derivatives
	Interest rate contracts:		Other income	$	3,160
			Other expense		-1

Balance_Sheet_Offsetting_Table

Balance Sheet Offsetting (Tables)	9 Months Ended
	Sep. 30, 2014
Offsetting [Abstract]	'
Balance Sheet Netting	'
		The following table provides information about financial instruments that are eligible for offset at September 30, 2014 and
	December 31, 2013.
	Balance Sheet Netting Disclosure about Offsetting Assets and Liabilities
										Net Amounts
										Presented in
										the			Gross Amounts Not Offset in the
				Gross						Consolidated			Consolidated Balance Sheet
				Amounts			Gross Amounts			Balance			Financial			Cash
				Recognized			Offset			Sheet			Instruments			Collateral			Net Amount
	30-Sep-14
	Financial assets:
		Derivatives		$	22,339		$	0		$	22,339		$	0		$	-1,590		$	20,749
	Financial liabilities:
		Derivatives		$	35,668		$	0		$	35,668		$	0		$	-28,858		$	6,810
		Repurchase agreements			281,085			0			281,085			-281,085			0			0
			Total	$	316,753		$	0		$	316,753		$	-281,085		$	-28,858		$	6,810
	31-Dec-13
	Financial assets:
		Derivatives		$	24,316		$	0		$	24,316		$	0		$	-3,940		$	20,376
	Financial liabilities:
		Derivatives		$	50,247		$	0		$	50,247		$	0		$	-35,385		$	14,862
		Repurchase agreements			295,800			0			295,800			-295,800			0			0
			Total	$	346,047		$	0		$	346,047		$	-295,800		$	-35,385		$	14,862
			The table below presents the offsetting of derivative assets and derivative liabilities as of September 30, 2014 and December 31,
	2013
					Derivative Assets and Collateral												Derivative Liabilities and Collateral
					Held by Counterparty												Pledged by Counterparty
					Amounts			Gross Amounts									Amounts			Gross Amounts
					Presented in			Not Offset									Presented in			Not Offset
					the			in the Consolidated									the			in the Consolidated
					Consolidated			Balance Sheet									Consolidated			Balance Sheet
					Balance			Financial			Cash			Net			Balance			Financial		Cash		Net
	30-Sep-14				Sheet			Instruments			Collateral			Amount			Sheet			Instruments		Collateral		Amount
	Cleared Agreements:
		Clearing member A			$	0		$	0		$	0		$	0		$	6,485		$	0	$	-6,485	$	0
						0			0			0			0			6,485			0		-6,485		0
	Bilateral Agreements:
		Counterparty:
			Dealer A			1,054			0			0			1,054			3,470			0		-2,560		910
			Dealer B			1,145			0			0			1,145			2,039			0		-1,310		729
			Dealer C			129			0			0			129			1,002			0		-850		152
			Dealer D			2,722			0			-1,590			1,132			953			0		0		953
			Dealer E			0			0			0			0			12,642			0		-12,642		0
			Dealer F			0			0			0			0			2,049			0		-2,049		0
			Dealer G			0			0			0			0			2,014			0		-2,014		0
			Dealer H			0			0			0			0			668			0		-668		0
			Dealer I			0			0			0			0			394			0		-280		114
			Dealer J			0			0			0			0			13			0		0		13
			End User			17,289			0			0			17,289			3,939			0		0		3,939
						22,339			0			-1,590			20,749			29,183			0		-22,373		6,810
				Total	$	22,339		$	0		$	-1,590		$	20,749		$	35,668		$	0	$	-28,858	$	6,810
	31-Dec-13
	Cleared Agreements:
		Clearing member A			$	19		$	0		$	0		$	19		$	1,077		$	0	$	-1,077	$	0
						19			0			0			19			1,077			0		-1,077		0
	Bilateral Agreements:
		Counterparty:
			Dealer A			2,836			0			0			2,836			3,840			0		-1,290		2,550
			Dealer B			2,412			0			0			2,412			3,306			0		-1,400		1,906
			Dealer C			359			0			0			359			684			0		-550		134
			Dealer D			5,571			0			-3,940			1,631			688			0		0		688
			Dealer E			0			0			0			0			21,251			0		-21,251		0
			Dealer F			0			0			0			0			5,081			0		-5,081		0
		Dealer G			0			0			0			0			3,966			0		-3,966		0
		Dealer H			0			0			0			0			770			0		-770		0
		Dealer I			0			0			0			0			121			0		0		121
		Dealer J			0			0			0			0			18			0		0		18
		End User			13,119			0			0			13,119			9,445			0		0		9,445
					24,297			0			-3,940			20,357			49,170			0		-34,308		14,862
			Total	$	24,316		$	0		$	-3,940		$	20,376		$	50,247		$	0	$	-35,385	$	14,862

Fair_Value_Disclosures_Tables

Fair Value Disclosures (Tables)	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Assets and Liabilities Measured at Fair Value on a Recurring Basis	'
	Assets and Liabilities Measured at Fair Value on a Recurring Basis
			The following tables present the financial instruments carried at fair value at September 30, 2014 and December 31, 2013, on
	the consolidated balance sheets and by levels within the valuation hierarchy.
									Fair Value Measurements at Reporting Date Using
									Quoted Prices in			Significant
									Active Markets for			Other			Significant
									Identical			Observable			Unobservable
									Instruments			Inputs			Inputs
	Description					30-Sep-14			(Level 1)			(Level 2)			(Level 3)
	Assets
	Available-for-sale securities:
		U.S. Government Agencies				$	93,716		$	0		$	93,716		$	0
		Obligations of states and political
			subdivisions				396,343			0			396,343			0
		Agency residential mortgage-backed
			securities				1,635,299			0			1,635,299			0
		Non-agency residential mortgage-
			backed securities				304			0			304			0
		Commercial mortgage-backed
			securities				5,837			0			5,837			0
		Other structured financial products					11,761			0			0			11,761
		Other debt securities					24,921			0			24,921			0
		Other equity securities					24,434			21,665			0			2,769
	Derivatives: (1)
		Designated as hedging instruments					725			0			725			0
		Not designated as hedging
			instruments				21,614			0			21,614			0
				Total		$	2,214,954		$	21,665		$	2,178,759		$	14,530
	Liabilities
	Derivatives: (2)
		Designated as hedging instruments				$	17,506		$	0		$	17,506		$	0
		Not designated as hedging
			instruments				18,162			0			18,162			0
				Total		$	35,668		$	0		$	35,668		$	0
									Fair Value Measurements at Reporting Date Using
									Quoted Prices in			Significant
									Active Markets for			Other			Significant
									Identical			Observable			Unobservable
									Instruments			Inputs			Inputs
	Description					31-Dec-13			(Level 1)			(Level 2)			(Level 3)
	Assets
	Available-for-sale securities:
		U.S. Government Agencies				$	110,148		$	0		$	110,148		$	0
		Obligations of states and political
			subdivisions				398,510			0			398,510			0
		Agency residential mortgage-
			backed securities				1,778,192			0			1,778,192			0
		Non-agency residential mortgage-
			backed securities				565			0			565			0
		Commercial mortgage-backed
			securities				8,734			0			8,734			0
		Other structured financial products					11,297			0			0			11,297
		Other debt securities					44,086			0			44,086			0
		Other equity securities					23,692			20,895			0			2,797
	Derivatives: (1)
		Designated as hedging instruments					1,419			0			1,419			0
		Not designated as hedging
			instruments				22,897			0			22,897			0
				Total		$	2,399,540		$	20,895		$	2,364,551		$	14,094
	Liabilities
	Derivatives: (2)
		Designated as hedging instruments				$	31,662		$	0		$	31,662		$	0
		Not designated as hedging
		instruments				18,585			0			18,585			0
			Total		$	50,247		$	0		$	50,247		$	0
-1	Included in Other assets
-2	Included in Other liabilities
Assets Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs	'
	Assets Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs
			The following tables present roll-forwards of the balance sheet amounts for the three and nine month periods ended September
	30, 2014 and 2013, for financial instruments classified by Susquehanna within Level 3 of the valuation hierarchy.
						Available-for-sale Securities
												Non-
												agency
									Other			Residential
									Structured			Mortgage-
						Equity			Financial			backed
						Securities			Products			Securities			Total
	Balance at July 1, 2014					$	2,803		$	11,995		$	0		$	14,798
		Included in earnings					0			0			0			0
		Realized other-than-temporary impairment					0			0			0			0
		Principal paydowns					0			-143			0			-143
		Included in other comprehensive income					-34			-91			0			-125
	Balance at September 30, 2014					$	2,769		$	11,761		$	0		$	14,530
	Balance at July 1, 2013					$	2,820		$	10,506		$	24,549		$	37,875
		Included in earnings					0			0			0			0
		Realized other-than-temporary impairment					0			0			26			26
		Principal paydowns					0			-37			-1,789			-1,826
		Included in other comprehensive income					1			975			236			1,212
	Balance at September 30, 2013					$	2,821		$	11,444		$	23,022		$	37,287
	Balance at January 1, 2014					$	2,797		$	11,297		$	0		$	14,094
		Included in earnings					0			0			0			0
		Realized other-than-temporary impairment					0			0			0			0
		Principal paydowns					0			-378			0			-378
		Included in other comprehensive income					-28			842			0			814
	Balance at September 30, 2014					$	2,769		$	11,761		$	0		$	14,530
	Balance at January 1, 2013					$	3,156		$	9,550		$	26,800		$	39,506
		Included in earnings					-97			0			-379			-476
		Realized other-than-temporary impairment					0			0			156			156
		Principal paydowns					0			-114			-5,029			-5,143
		Included in other comprehensive income					-238			2,008			1,474			3,244
	Balance at September 30, 2013					$	2,821		$	11,444		$	23,022		$	37,287
Assets Measured at Fair Value on a Nonrecurring Basis	'
		The following tables present assets measured at fair value on a nonrecurring basis at September 30, 2014 and
	December 31, 2013, on the consolidated balance sheets and by the valuation hierarchy.
							Quoted
							Prices
							in Active			Significant
							Markets for			Other			Significant
							Identical			Observable			Unobservable
							Instruments			Inputs			Inputs
		Description		30-Sep-14			(Level 1)			(Level 2)			(Level 3)
		Impaired loans		$	47,441		$	0		$	0		$	47,441
		Foreclosed assets			9,133			0			0			9,133
				$	56,574		$	0		$	0		$	56,574
							Quoted
							Prices
							in Active			Significant
							Markets for			Other			Significant
							Identical			Observable			Unobservable
							Instruments			Inputs			Inputs
		Description		31-Dec-13			(Level 1)			(Level 2)			(Level 3)
		Impaired loans		$	54,216		$	0		$	0		$	54,216
		Foreclosed assets			16,555			0			0			16,555
				$	70,771		$	0		$	0		$	70,771
Quantitative Information about Level 3 Fair Value Measurements	'
		The following table details the quantitative information about Level 3 fair value measurements:
			Fair Value at		Valuation		Range
	Asset		30-Sep-14		Technique(s)	Unobservable Input	(Weighted Average)
	Other structured financial products (1)		$	11,761	Discounted Cash Flow	Credit default rates, call options and deferrals, waterfall structure, and covenants.	Varies by individual security, refer to Note 2
	Other equity securities			2,769	Discounted Cash Flow	Cash flows from dividends and terminal value	0.2x - 1.2x
							(0.8x)
	Impaired loans			47,441	Discounted Cash Flow	Cash flows based upon current discount rates and terminal value	0.6% - 13.9%
							-4.00%
	Foreclosed assets			9,133	Discounted Cash Flow	Third party appraisals less estimated selling costs	0.0% - 100.0%
							-38.70%
			Fair Value at		Valuation		Range
	Asset		31-Dec-13		Technique(s)	Unobservable Input	(Weighted Average)
	Other structured financial products (1)		$	11,297	Discounted Cash Flow	Credit default rates, call options and deferrals, waterfall structure, and covenants.	Varies by individual security, refer to Note 2
	Other equity securities			2,797	Discounted Cash Flow	Cash flows from dividends and terminal value	0.2x - 1.5x
							(0.8x)
	Impaired loans			54,216	Discounted Cash Flow	Cash flows based upon current discount rates and terminal value	0.8% - 8.0%
							-3.90%
	Foreclosed assets			16,555	Discounted Cash Flow	Third party appraisals less estimated selling costs	0.0% - 100.0%
							-29.60%
	-1	The significant unobservable inputs used in the fair value measurement of Susquehanna's other structured financial products are conditional repayment rate, loss severity, and conditional default rate. Significant increases (decreases) in any of those inputs in isolation would result in a significantly lower (higher) fair value measurement. Generally, a change in the assumption used for the probability of default is accompanied by a directionally similar change in the assumption used for the loss severity and directionally opposite change in the assumption used for repayment rate.
Carrying Amounts and Estimated Fair Values	'
	Additional Disclosures about Fair Value of Financial Instruments
		The following table represents the carrying amounts and estimated fair values of Susquehanna's financial instruments. The
	methods and assumptions used to estimate the fair value of each class of financial instruments are described above.
				30-Sep-14
				Carrying
				Amount			Fair Value			Level 1			Level 2			Level 3
		Financial assets:
			Cash and due from banks	$	772,677		$	772,677		$	772,677		$	0		$	0
			Short-term investments		79,662			79,662			0			79,662			0
			Investment securities		2,192,615			2,192,615			21,665			2,156,420			14,530
			Restricted investment in bank stocks		133,119			133,119			0			133,119			0
			Loans and leases		13,425,721			13,422,747			0			0			13,422,747
			Derivatives		22,339			22,339			0			22,339			0
		Financial liabilities:
			Deposits		13,588,524			12,660,047			0			12,660,047			0
			Short-term borrowings		532,675			532,675			0			532,675			0
			FHLB borrowings		915,362			918,764			0			918,764			0
			Long-term debt		356,117			354,524			0			354,524			0
			Derivatives		35,668			35,668			0			35,668			0
				31-Dec-13
				Carrying
				Amount			Fair Value			Level 1			Level 2			Level 3
		Financial assets:
			Cash and due from banks	$	305,357		$	305,357		$	305,357		$	0		$	0
			Short-term investments		83,227			83,227			0			83,227			0
			Investment securities		2,375,224			2,375,224			20,895			2,340,235			14,094
			Restricted investment in bank stocks		158,232			158,232			0			158,232			0
			Loans and leases		13,576,086			13,463,676			0			0			13,463,676
			Derivatives		24,316			24,316			0			24,316			0
		Financial liabilities:
			Deposits		12,869,372			11,901,099			0			11,901,099			0
			Short-term borrowings		555,740			555,740			0			555,740			0
			FHLB borrowings		1,531,282			1,531,606			0			1,531,606			0
			Long-term debt		453,260			461,247			0			461,247			0
			Derivatives		50,247			50,247			0			50,247			0

Investment_Securities_Amortize

Investment Securities (Amortized Cost and Fair Values of Investment Securities) (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Schedule Of Available For Sale Securities [Line Items]	'	'
Available-for-Sale, Amortized Cost	$2,178,698,000	$2,387,211,000
Available-for-Sale, Gross Unrealized Gains	39,556,000	28,103,000
Available-for-Sale, Gross Unrealized Losses	25,639,000	40,090,000
Total available-for-sale securities, Fair Value	2,192,615,000	2,375,224,000
U.S. Government Agencies [Member]	'	'
Schedule Of Available For Sale Securities [Line Items]	'	'
Available-for-Sale, Amortized Cost	93,712,000	110,227,000
Available-for-Sale, Gross Unrealized Gains	135,000	343,000
Available-for-Sale, Gross Unrealized Losses	131,000	422,000
Total available-for-sale securities, Fair Value	93,716,000	110,148,000
Obligations Of States And Political Subdivisions [Member]	'	'
Schedule Of Available For Sale Securities [Line Items]	'	'
Available-for-Sale, Amortized Cost	375,529,000	389,199,000
Available-for-Sale, Gross Unrealized Gains	21,471,000	13,386,000
Available-for-Sale, Gross Unrealized Losses	657,000	4,075,000
Total available-for-sale securities, Fair Value	396,343,000	398,510,000
Agency Residential Mortgage-Backed Securities [Member]	'	'
Schedule Of Available For Sale Securities [Line Items]	'	'
Available-for-Sale, Amortized Cost	1,630,197,000	1,786,133,000
Available-for-Sale, Gross Unrealized Gains	16,159,000	12,163,000
Available-for-Sale, Gross Unrealized Losses	11,057,000	20,104,000
Total available-for-sale securities, Fair Value	1,635,299,000	1,778,192,000
Non-Agency Residential Mortgage-Backed Securities [Member]	'	'
Schedule Of Available For Sale Securities [Line Items]	'	'
Available-for-Sale, Amortized Cost	307,000	572,000
Available-for-Sale, Gross Unrealized Gains	1,000	1,000
Available-for-Sale, Gross Unrealized Losses	4,000	8,000
Total available-for-sale securities, Fair Value	304,000	565,000
Commercial Mortgage Backed Securities [Member]	'	'
Schedule Of Available For Sale Securities [Line Items]	'	'
Available-for-Sale, Amortized Cost	5,736,000	8,568,000
Available-for-Sale, Gross Unrealized Gains	104,000	166,000
Available-for-Sale, Gross Unrealized Losses	3,000	0
Total available-for-sale securities, Fair Value	5,837,000	8,734,000
Other Structured Financial Products [Member]	'	'
Schedule Of Available For Sale Securities [Line Items]	'	'
Available-for-Sale, Amortized Cost	24,562,000	25,038,000
Available-for-Sale, Gross Unrealized Gains	0	0
Available-for-Sale, Gross Unrealized Losses	12,801,000	13,741,000
Total available-for-sale securities, Fair Value	11,761,000	11,297,000
Other Debt Securities [Member]	'	'
Schedule Of Available For Sale Securities [Line Items]	'	'
Available-for-Sale, Amortized Cost	24,078,000	43,156,000
Available-for-Sale, Gross Unrealized Gains	941,000	1,487,000
Available-for-Sale, Gross Unrealized Losses	98,000	557,000
Total available-for-sale securities, Fair Value	24,921,000	44,086,000
Total Debt Securities [Member]	'	'
Schedule Of Available For Sale Securities [Line Items]	'	'
Available-for-Sale, Amortized Cost	2,154,121,000	2,362,893,000
Available-for-Sale, Gross Unrealized Gains	38,811,000	27,546,000
Available-for-Sale, Gross Unrealized Losses	24,751,000	38,907,000
Total available-for-sale securities, Fair Value	2,168,181,000	2,351,532,000
Other Equity Securities [Member]	'	'
Schedule Of Available For Sale Securities [Line Items]	'	'
Available-for-Sale, Amortized Cost	24,577,000	24,318,000
Available-for-Sale, Gross Unrealized Gains	745,000	557,000
Available-for-Sale, Gross Unrealized Losses	888,000	1,183,000
Total available-for-sale securities, Fair Value	$24,434,000	$23,692,000

Investment_Securities_Narrativ

Investment Securities (Narrative) (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
	Securities
Investment [Line Items]	'	'	'
Amount of securities pledged to secure public funds and other purposes as required by law	$1,432,660	$1,512,824	'
Number of non-agency residential mortgage-backed securities that had unrealized losses	1	'	'
Number of non-agency residential mortgage-backed securities rated below investment grade	0	'	'
Number of non-agency residential mortgage-backed securities that have subprime or Alt-A components	0	'	'
Number of non-agency residential-mortgage backed securities with other-than-temporary impairment	0	'	'
Accumulated other comprehensive income (loss), other-than- temporarily impaired securities	'	'	321
Minimum [Member]	'	'	'
Investment [Line Items]	'	'	'
Number of days mortgage is past due related to cumulative default rate	'60 days	'	'
Maximum [Member]	'	'	'
Investment [Line Items]	'	'	'
Number of days mortgage is past due related to cumulative default rate	'90 days	'	'
Other Structured Financial Products [Member]	'	'	'
Investment [Line Items]	'	'	'
Unrealized loss	$12,801	'	$13,605

Investment_Securities_Amortize1

Investment Securities (Amortized Cost and Fair Value of Total Debt Securities) (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Disclosure Investment Securities Amortized Cost And Fair Value Of Total Debt Securities [Abstract]	'	'
Securities available for sale, Within one year - Amortized Cost	$33,572	$8,870
Securities available for sale, After one year but within five years - Amortized Cost	108,112	129,176
Securities available for sale, After five years but within ten years - Amortized Cost	909,907	945,637
Securities available for sale, After ten years - Amortized Cost	1,102,530	1,279,210
Securities available for sale - Amortized Cost	2,154,121	2,362,893
Securities available for sale, Within one year - Fair Value	34,014	9,005
Securities available for sale, After one year but within five years - Fair Value	110,911	130,091
Securities available for sale, After five years but within ten years - Fair Value	919,143	946,754
Securities available for sale, After ten years - Fair Value	1,104,113	1,265,682
Securities available for sale - Fair Value	$2,168,181	$2,351,532

Investment_Securities_Gross_Re

Investment Securities (Gross Realized Gains and Gross Realized Losses on Available-for-Sale Securities) (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Disclosure Investment Securities Gross Realized Gains And Gross Realized Losses On Availablefor Sale Securities [Abstract]	'	'	'	'
Gross gains - Available-for-sale Securities	$0	$2,000	$3,364,000	$435,000
Gross losses - Available-for-sale Securities	0	0	-79,000	-1,000
Other-than-temporary impairment - Available-for-sale Securities	0	0	0	-485,000
Net gains - Available-for-sale Securities	$0	$2,000	$3,285,000	($51,000)

Investment_Securities_Gross_Un

Investment Securities (Gross Unrealized Losses and Fair Values by Investment and Length of Time Of Securities) (Detail) (USD $)	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Schedule Of Available For Sale Securities [Line Items]	'	'
Fair Value, Less than 12 Months	$318,926,000	$1,192,634,000
Unrealized Losses, Less than 12 Months	2,193,000	24,730,000
Fair Value, 12 Months or More	390,307,000	26,417,000
Unrealized Losses, 12 Months or More	23,446,000	15,360,000
Fair Value, Total	709,233,000	1,219,051,000
Unrealized Losses, Total	25,639,000	40,090,000
U.S. Government Agencies [Member]	'	'
Schedule Of Available For Sale Securities [Line Items]	'	'
Fair Value, Less than 12 Months	36,477,000	68,111,000
Unrealized Losses, Less than 12 Months	83,000	422,000
Fair Value, 12 Months or More	1,952,000	0
Unrealized Losses, 12 Months or More	48,000	0
Fair Value, Total	38,429,000	68,111,000
Unrealized Losses, Total	131,000	422,000
Obligations Of States And Political Subdivisions [Member]	'	'
Schedule Of Available For Sale Securities [Line Items]	'	'
Fair Value, Less than 12 Months	0	73,895,000
Unrealized Losses, Less than 12 Months	0	3,910,000
Fair Value, 12 Months or More	52,383,000	7,025,000
Unrealized Losses, 12 Months or More	657,000	165,000
Fair Value, Total	52,383,000	80,920,000
Unrealized Losses, Total	657,000	4,075,000
Agency Residential Mortgage-Backed Securities [Member]	'	'
Schedule Of Available For Sale Securities [Line Items]	'	'
Fair Value, Less than 12 Months	280,503,000	1,030,987,000
Unrealized Losses, Less than 12 Months	2,107,000	20,104,000
Fair Value, 12 Months or More	317,208,000	0
Unrealized Losses, 12 Months or More	8,950,000	0
Fair Value, Total	597,711,000	1,030,987,000
Unrealized Losses, Total	11,057,000	20,104,000
Non-Agency Residential Mortgage-Backed Securities [Member]	'	'
Schedule Of Available For Sale Securities [Line Items]	'	'
Fair Value, Less than 12 Months	0	530,000
Unrealized Losses, Less than 12 Months	0	8,000
Fair Value, 12 Months or More	278,000	0
Unrealized Losses, 12 Months or More	4,000	0
Fair Value, Total	278,000	530,000
Unrealized Losses, Total	4,000	8,000
Commercial Mortgage Backed Securities [Member]	'	'
Schedule Of Available For Sale Securities [Line Items]	'	'
Fair Value, Less than 12 Months	1,946,000	'
Unrealized Losses, Less than 12 Months	3,000	'
Fair Value, 12 Months or More	0	'
Unrealized Losses, 12 Months or More	0	'
Fair Value, Total	1,946,000	'
Unrealized Losses, Total	3,000	'
Other Structured Financial Products [Member]	'	'
Schedule Of Available For Sale Securities [Line Items]	'	'
Fair Value, Less than 12 Months	0	0
Unrealized Losses, Less than 12 Months	0	0
Fair Value, 12 Months or More	11,761,000	11,297,000
Unrealized Losses, 12 Months or More	12,801,000	13,741,000
Fair Value, Total	11,761,000	11,297,000
Unrealized Losses, Total	12,801,000	13,741,000
Other Debt Securities [Member]	'	'
Schedule Of Available For Sale Securities [Line Items]	'	'
Fair Value, Less than 12 Months	0	0
Unrealized Losses, Less than 12 Months	0	0
Fair Value, 12 Months or More	5,148,000	6,476,000
Unrealized Losses, 12 Months or More	98,000	557,000
Fair Value, Total	5,148,000	6,476,000
Unrealized Losses, Total	98,000	557,000
Other Equity Securities [Member]	'	'
Schedule Of Available For Sale Securities [Line Items]	'	'
Fair Value, Less than 12 Months	0	19,111,000
Unrealized Losses, Less than 12 Months	0	286,000
Fair Value, 12 Months or More	1,577,000	1,619,000
Unrealized Losses, 12 Months or More	888,000	897,000
Fair Value, Total	1,577,000	20,730,000
Unrealized Losses, Total	$888,000	$1,183,000

Investment_Securities_Credit_L

Investment Securities (Credit Losses on Non-Agency Residential Mortgage-Backed Securities) (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Non-Agency Residential Mortgage-Backed Securities [Member]	'	'	'	'
Schedule Of Available For Sale Securities [Line Items]	'	'	'	'
Balance	$0	$1,026,000	$0	$768,000
Amount related to credit losses for which an other-than-temporary impairment was not previously recognized	0	0	0	325,000
Additional amount related to credit losses for which an other-than-temporary impairment was previously recognized	0	0	0	63,000
Realized losses	0	26,000	0	156,000
Balance	0	1,000,000	0	1,000,000
Other Equity Securities [Member]	'	'	'	'
Schedule Of Available For Sale Securities [Line Items]	'	'	'	'
Balance	609,000	609,000	609,000	512,000
Amount related to credit losses for which an other-than-temporary impairment was not previously recognized	0	0	0	0
Additional amount related to credit losses for which an other-than-temporary impairment was previously recognized	0	0	0	97,000
Realized losses	0	0	0	0
Balance	$609,000	$609,000	$609,000	$609,000

Investment_Securities_Signific

Investment Securities (Significant Assumptions of Other-Than-Temporarily Impaired Securities) (Detail)	9 Months Ended
	Sep. 30, 2013
Disclosure Investment Securities Significant Assumptions Of Other Than Temporarily Impaired Securities [Abstract]	'
Conditional repayment rate	10.60%	[1]
Loss severity	37.80%	[2]
Conditional default rate	3.60%	[3]
[1]	Conditional repayment rate represents a rate equal to the proportion of principal balance paid off voluntarily over a certain period of time on an annualized basis.
[2]	Loss severity rates are projected by considering collateral characteristics such as current loan-to-value, original creditworthiness of borrowers (FICO score) and geographic concentration.
[3]	Conditional default rate is an annualized rate of default on a group of mortgages, and represents the percentage of outstanding principal balances in the pool that are in default, which typically equates to the borrower being past due 60 days, 90 days, or possibly already in the foreclosure process.

Investment_Securities_Present_

Investment Securities (Present Value of Expected Cash Flows for Company's Specific Class and Subordinate Classes) (Detail) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013
Pooled Trust #1 [Member]	'		'
Investment [Line Items]	'		'
Recorded investment	$3,000		$3,000
Fair value	1,308		1,400
Unrealized loss	-1,692		-1,600
Class	'B		'B
Class face value	35,000		35,000
Present value of expected cash flows for class noted above and all subordinated classes	180,717	[1]	172,482	[1]
Lowest credit rating assigned	'D		'D
Original collateral	623,984		623,984
Performing collateral	384,342		393,342
Actual defaults	40,400		41,600
Actual deferrals	28,500		34,300
Projected future defaults	36,582		41,274
Actual defaults as a % of original collateral	6.50%		6.70%
Actual deferrals as a % of original collateral	4.60%	[2]	5.50%	[2]
Actual defaults and deferrals as a % of original collateral	11.10%		12.20%
Projected future defaults as a % of original collateral	5.90%	[3]	6.60%	[3]
Actual institutions deferring and defaulted as a % of total institutions	15.60%		16.90%
Projected future defaults as a % of performing collateral plus deferrals	8.90%		9.70%
Pooled Trust #2 [Member]	'		'
Investment [Line Items]	'		'
Recorded investment	6,981		7,183
Fair value	3,967		3,654
Unrealized loss	-3,014		-3,529
Class	'B		'B
Class face value	58,375		59,409
Present value of expected cash flows for class noted above and all subordinated classes	196,316	[1]	194,406	[1]
Lowest credit rating assigned	'B3		'Ca
Original collateral	501,470		501,470
Performing collateral	318,814		299,934
Actual defaults	55,580		51,580
Actual deferrals	75,430		98,310
Projected future defaults	42,626		45,777
Actual defaults as a % of original collateral	11.10%		10.30%
Actual deferrals as a % of original collateral	15.00%	[2]	19.60%	[2]
Actual defaults and deferrals as a % of original collateral	26.10%		29.90%
Projected future defaults as a % of original collateral	8.50%	[3]	9.10%	[3]
Actual institutions deferring and defaulted as a % of total institutions	31.50%		34.50%
Projected future defaults as a % of performing collateral plus deferrals	10.80%		11.50%
Pooled Trust #3 [Member]	'		'
Investment [Line Items]	'		'
Recorded investment	7,831		8,116
Fair value	4,428		4,081
Unrealized loss	-3,403		-4,035
Class	'B		'B
Class face value	86,900		89,268
Present value of expected cash flows for class noted above and all subordinated classes	325,424	[1]	305,868	[1]
Lowest credit rating assigned	'B1		'Ca
Original collateral	700,535		700,535
Performing collateral	478,061		472,261
Actual defaults	29,000		44,000
Actual deferrals	70,650		93,650
Projected future defaults	44,731		49,510
Actual defaults as a % of original collateral	4.10%		6.30%
Actual deferrals as a % of original collateral	10.10%	[2]	13.40%	[2]
Actual defaults and deferrals as a % of original collateral	14.20%		19.70%
Projected future defaults as a % of original collateral	6.40%	[3]	7.10%	[3]
Actual institutions deferring and defaulted as a % of total institutions	20.60%		24.60%
Projected future defaults as a % of performing collateral plus deferrals	8.20%		8.70%
Pooled Trust #4 [Member]	'		'
Investment [Line Items]	'		'
Recorded investment	6,750		6,750
Fair value	2,058		2,309
Unrealized loss	-4,692		-4,441
Class	'A2L		'A2L
Class face value	45,500		45,500
Present value of expected cash flows for class noted above and all subordinated classes	167,181	[1]	153,932	[1]
Lowest credit rating assigned	'Ca		'Ca
Original collateral	487,680		487,680
Performing collateral	268,100		273,488
Actual defaults	83,500		75,357
Actual deferrals	70,580		93,080
Projected future defaults	$26,711		$42,236
Actual defaults as a % of original collateral	17.10%		15.50%
Actual deferrals as a % of original collateral	14.50%	[2]	19.10%	[2]
Actual defaults and deferrals as a % of original collateral	31.60%		34.60%
Projected future defaults as a % of original collateral	5.50%	[3]	8.70%	[3]
Actual institutions deferring and defaulted as a % of total institutions	38.10%		40.90%
Projected future defaults as a % of performing collateral plus deferrals	7.90%		11.50%
[1]	Susquehanna determines whether it expects to recover the entire amortized cost basis by comparing the present value of the expected cash flows to be collected with the amortized cost basis. As of SeptemberB 30, 2014 and 2013, the present value of the current estimated cash flows is equal to or greater than the book value of the trust preferred securities held. Consequently, there is no credit-related other-than-temporary impairment required to be recognized.
[2]	Includes current interest deferrals for the quarter for those institutions deferring as of the date of the assessment of the other-than-temporary impairment. Current deferrals are assumed to continue for twenty quarters, the full contractually permitted deferral period, if the institutions are not projected to default prior to that time.
[3]	Includes those institutions that are performing but are not projected to continue to perform and includes those institutions that are currently deferring interest that are projected to default, based upon third-party proprietary valuation methodology used to determine future defaults. Creditworthiness of each underlying issue in the collateralized debt obligation is determined using publicly available data.

Loans_and_Leases_Loans_and_Lea

Loans and Leases (Loans and Leases, Net of Deferred Costs and Fees) (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Loans And Leases Receivable Net Of Deferred Costs And Fees By Type [Line Items]	'	'
Total loans and leases	$13,361,516,000	$13,503,392,000
Nonaccrual loans and leases	109,506,000	100,815,000
Loans and leases contractually past due 90 days and still accruing	10,303,000	9,757,000
Troubled Debt Restructurings	42,418,000	72,133,000
Deferred origination costs, net of fees	13,943,000	21,216,000
All overdrawn deposit accounts, reclassified as loans and evaluated for collectability	2,483,000	2,918,000
Commercial, Financial, And Agricultural [Member]	'	'
Loans And Leases Receivable Net Of Deferred Costs And Fees By Type [Line Items]	'	'
Total loans and leases	2,362,201,000	2,394,847,000
Real Estate - Construction [Member]	'	'
Loans And Leases Receivable Net Of Deferred Costs And Fees By Type [Line Items]	'	'
Total loans and leases	817,492,000	735,877,000
Real Estate Secured - Residential [Member]	'	'
Loans And Leases Receivable Net Of Deferred Costs And Fees By Type [Line Items]	'	'
Total loans and leases	4,172,943,000	4,204,430,000
Real Estate Secured - Commercial [Member]	'	'
Loans And Leases Receivable Net Of Deferred Costs And Fees By Type [Line Items]	'	'
Total loans and leases	4,016,635,000	4,068,816,000
Consumer [Member]	'	'
Loans And Leases Receivable Net Of Deferred Costs And Fees By Type [Line Items]	'	'
Total loans and leases	730,687,000	953,000,000
Leases [Member]	'	'
Loans And Leases Receivable Net Of Deferred Costs And Fees By Type [Line Items]	'	'
Total loans and leases	1,325,763,000	1,219,116,000
Total Loans And Leases [Member]	'	'
Loans And Leases Receivable Net Of Deferred Costs And Fees By Type [Line Items]	'	'
Total loans and leases	13,425,721,000	13,576,086,000
Originated Loans And Leases [Member]	'	'
Loans And Leases Receivable Net Of Deferred Costs And Fees By Type [Line Items]	'	'
Total loans and leases	11,993,169,000	11,930,946,000
Purchased Loans And Leases [Member]	'	'
Loans And Leases Receivable Net Of Deferred Costs And Fees By Type [Line Items]	'	'
Total loans and leases	$1,432,552,000	$1,645,140,000

Loans_and_Leases_Net_Investmen

Loans and Leases (Net Investment in Direct Financing Leases) (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Net Investment In Direct Financing Leases [Line Items]	'	'
Net Investment In Direct Financing Leases	$1,325,763	$1,219,116
Minimum Lease Payments Receivable [Member]	'	'
Net Investment In Direct Financing Leases [Line Items]	'	'
Net Investment In Direct Financing Leases	666,191	667,365
Estimated Residual Value Of Leases [Member]	'	'
Net Investment In Direct Financing Leases [Line Items]	'	'
Net Investment In Direct Financing Leases	742,443	634,875
Unearned Income Under Lease Contracts [Member]	'	'
Net Investment In Direct Financing Leases [Line Items]	'	'
Net Investment In Direct Financing Leases	($82,871)	($83,124)

Loans_Leases_Narrative_Detail

Loans & Leases (Narrative) (Detail) (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2013
Disclosure Loans & Leases Narrative [Abstract]	'	'	'
Indirect Auto Loans Reclassified From Held For Investment To Held For Sale	'	$265,000,000	'
Transfer For Loans Designated As Held For Sale	0	1,236,000	'
Cash Proceeds From Sale Of Reclassified Loans	'	256,372,000	0
Servicing Asset	2,000,000	2,000,000	'
Significant Credit Rating Loans Threshold	$5,000,000	$5,000,000	'

Loans_and_Leases_Credit_Qualit

Loans and Leases (Credit Quality Indicators Credit Exposure) (Detail) (USD $)	Sep. 30, 2014		Dec. 31, 2013
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	$13,361,516,000		$13,503,392,000
Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	7,908,758,000		7,969,557,000
Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	5,516,963,000		5,606,529,000
Pass [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	7,198,728,000	[1]	7,155,065,000	[1]
Special Mention [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	326,399,000	[2]	363,772,000	[2]
Substandard [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	383,631,000	[3]	450,720,000	[3]
Performing [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	5,487,624,000		5,576,068,000
Nonperforming [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	29,339,000	[4]	30,461,000	[4]
Originated Loans And Leases [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	6,920,593,000		6,833,939,000
Originated Loans And Leases [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	5,072,576,000		5,097,007,000
Originated Loans And Leases [Member] | Pass [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	6,423,137,000	[1]	6,270,856,000	[1]
Originated Loans And Leases [Member] | Special Mention [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	231,740,000	[2]	277,533,000	[2]
Originated Loans And Leases [Member] | Substandard [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	265,716,000	[3]	285,550,000	[3]
Originated Loans And Leases [Member] | Performing [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	5,053,246,000		5,077,555,000
Originated Loans And Leases [Member] | Nonperforming [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	19,330,000	[4]	19,452,000	[4]
Purchased Loans And Leases [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	988,165,000		1,135,618,000
Purchased Loans And Leases [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	444,387,000		509,522,000
Purchased Loans And Leases [Member] | Pass [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	775,591,000	[1]	884,209,000	[1]
Purchased Loans And Leases [Member] | Special Mention [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	94,659,000	[2]	86,239,000	[2]
Purchased Loans And Leases [Member] | Substandard [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	117,915,000	[3]	165,170,000	[3]
Purchased Loans And Leases [Member] | Performing [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	434,378,000		498,513,000
Purchased Loans And Leases [Member] | Nonperforming [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	10,009,000	[4]	11,009,000	[4]
Commercial, Financial, And Agricultural [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	2,362,201,000		2,394,847,000
Commercial, Financial, And Agricultural [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	2,362,201,000		2,394,847,000
Commercial, Financial, And Agricultural [Member] | Pass [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	2,231,950,000	[1]	2,242,782,000	[1]
Commercial, Financial, And Agricultural [Member] | Special Mention [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	59,946,000	[2]	79,382,000	[2]
Commercial, Financial, And Agricultural [Member] | Substandard [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	70,305,000	[3]	72,683,000	[3]
Commercial, Financial, And Agricultural [Member] | Originated Loans And Leases [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	2,249,867,000		2,269,214,000
Commercial, Financial, And Agricultural [Member] | Originated Loans And Leases [Member] | Pass [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	2,136,043,000	[1]	2,133,884,000	[1]
Commercial, Financial, And Agricultural [Member] | Originated Loans And Leases [Member] | Special Mention [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	49,338,000	[2]	75,162,000	[2]
Commercial, Financial, And Agricultural [Member] | Originated Loans And Leases [Member] | Substandard [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	64,486,000	[3]	60,168,000	[3]
Commercial, Financial, And Agricultural [Member] | Purchased Loans And Leases [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	112,334,000		125,633,000
Commercial, Financial, And Agricultural [Member] | Purchased Loans And Leases [Member] | Pass [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	95,907,000	[1]	108,898,000	[1]
Commercial, Financial, And Agricultural [Member] | Purchased Loans And Leases [Member] | Special Mention [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	10,608,000	[2]	4,220,000	[2]
Commercial, Financial, And Agricultural [Member] | Purchased Loans And Leases [Member] | Substandard [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	5,819,000	[3]	12,515,000	[3]
Real Estate - Construction [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	817,492,000		735,877,000
Real Estate - Construction [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	698,917,000	[5]	609,715,000	[5]
Real Estate - Construction [Member] | Pass [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	611,572,000	[1],[5]	503,167,000	[1],[5]
Real Estate - Construction [Member] | Special Mention [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	47,454,000	[2],[5]	53,718,000	[2],[5]
Real Estate - Construction [Member] | Substandard [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	39,891,000	[3],[5]	52,830,000	[3],[5]
Real Estate - Construction [Member] | Originated Loans And Leases [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	646,430,000	[5]	542,587,000	[5]
Real Estate - Construction [Member] | Originated Loans And Leases [Member] | Pass [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	590,503,000	[1],[5]	478,097,000	[1],[5]
Real Estate - Construction [Member] | Originated Loans And Leases [Member] | Special Mention [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	27,060,000	[2],[5]	33,907,000	[2],[5]
Real Estate - Construction [Member] | Originated Loans And Leases [Member] | Substandard [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	28,867,000	[3],[5]	30,583,000	[3],[5]
Real Estate - Construction [Member] | Purchased Loans And Leases [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	52,487,000	[5]	67,128,000	[5]
Real Estate - Construction [Member] | Purchased Loans And Leases [Member] | Pass [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	21,069,000	[1],[5]	25,070,000	[1],[5]
Real Estate - Construction [Member] | Purchased Loans And Leases [Member] | Special Mention [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	20,394,000	[2],[5]	19,811,000	[2],[5]
Real Estate - Construction [Member] | Purchased Loans And Leases [Member] | Substandard [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	11,024,000	[3],[5]	22,247,000	[3],[5]
Real Estate Secured - Commercial [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	4,016,635,000		4,068,816,000
Real Estate Secured - Commercial [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	4,847,640,000	[6]	4,964,995,000	[6]
Real Estate Secured - Commercial [Member] | Pass [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	4,355,206,000	[1],[6]	4,409,116,000	[1],[6]
Real Estate Secured - Commercial [Member] | Special Mention [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	218,999,000	[2],[6]	230,672,000	[2],[6]
Real Estate Secured - Commercial [Member] | Substandard [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	273,435,000	[3],[6]	325,207,000	[3],[6]
Real Estate Secured - Commercial [Member] | Originated Loans And Leases [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	4,024,296,000	[6]	4,022,138,000	[6]
Real Estate Secured - Commercial [Member] | Originated Loans And Leases [Member] | Pass [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	3,696,591,000	[1],[6]	3,658,875,000	[1],[6]
Real Estate Secured - Commercial [Member] | Originated Loans And Leases [Member] | Special Mention [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	155,342,000	[2],[6]	168,464,000	[2],[6]
Real Estate Secured - Commercial [Member] | Originated Loans And Leases [Member] | Substandard [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	172,363,000	[3],[6]	194,799,000	[3],[6]
Real Estate Secured - Commercial [Member] | Purchased Loans And Leases [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	823,344,000	[6]	942,857,000	[6]
Real Estate Secured - Commercial [Member] | Purchased Loans And Leases [Member] | Pass [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	658,615,000	[1],[6]	750,241,000	[1],[6]
Real Estate Secured - Commercial [Member] | Purchased Loans And Leases [Member] | Special Mention [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	63,657,000	[2],[6]	62,208,000	[2],[6]
Real Estate Secured - Commercial [Member] | Purchased Loans And Leases [Member] | Substandard [Member] | Commercial Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	101,072,000	[3],[6]	130,408,000	[3],[6]
Real Estate Secured - Residential [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	4,172,943,000		4,204,430,000
Real Estate Secured - Residential [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	3,460,513,000		3,434,413,000
Real Estate Secured - Residential [Member] | Performing [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	3,432,443,000		3,406,469,000
Real Estate Secured - Residential [Member] | Nonperforming [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	28,070,000	[4]	27,944,000	[4]
Real Estate Secured - Residential [Member] | Originated Loans And Leases [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	3,021,325,000		2,931,484,000
Real Estate Secured - Residential [Member] | Originated Loans And Leases [Member] | Performing [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	3,003,259,000		2,914,547,000
Real Estate Secured - Residential [Member] | Originated Loans And Leases [Member] | Nonperforming [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	18,066,000	[4]	16,937,000	[4]
Real Estate Secured - Residential [Member] | Purchased Loans And Leases [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	439,188,000		502,929,000
Real Estate Secured - Residential [Member] | Purchased Loans And Leases [Member] | Performing [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	429,184,000		491,922,000
Real Estate Secured - Residential [Member] | Purchased Loans And Leases [Member] | Nonperforming [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	10,004,000	[4]	11,007,000	[4]
Consumer [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	730,687,000		953,000,000
Consumer [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	730,687,000		953,000,000
Consumer [Member] | Performing [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	730,448,000		951,970,000
Consumer [Member] | Nonperforming [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	239,000	[4]	1,030,000	[4]
Consumer [Member] | Originated Loans And Leases [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	725,488,000		946,407,000
Consumer [Member] | Originated Loans And Leases [Member] | Performing [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	725,254,000		945,379,000
Consumer [Member] | Originated Loans And Leases [Member] | Nonperforming [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	234,000	[4]	1,028,000	[4]
Consumer [Member] | Purchased Loans And Leases [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	5,199,000		6,593,000
Consumer [Member] | Purchased Loans And Leases [Member] | Performing [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	5,194,000		6,591,000
Consumer [Member] | Purchased Loans And Leases [Member] | Nonperforming [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	5,000	[4]	2,000	[4]
Leases [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	1,325,763,000		1,219,116,000
Leases [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	1,325,763,000		1,219,116,000
Leases [Member] | Performing [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	1,324,733,000		1,217,629,000
Leases [Member] | Nonperforming [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	1,030,000	[4]	1,487,000	[4]
Leases [Member] | Originated Loans And Leases [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	1,325,763,000		1,219,116,000
Leases [Member] | Originated Loans And Leases [Member] | Performing [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	1,324,733,000		1,217,629,000
Leases [Member] | Originated Loans And Leases [Member] | Nonperforming [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	1,030,000	[4]	1,487,000	[4]
Leases [Member] | Purchased Loans And Leases [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	0		0
Leases [Member] | Purchased Loans And Leases [Member] | Performing [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	0		0
Leases [Member] | Purchased Loans And Leases [Member] | Nonperforming [Member] | Other Credit Exposure [Member]	'		'
Financing Receivable Recorded Investment [Line Items]	'		'
Credit Exposure	$0	[4]	$0	[4]
[1]	Includes loans identified as having acceptable risk, which are loans for which the possibility of loss is considered unlikely.
[2]	Includes loans considered potentially weak; however, no loss of principal or interest is anticipated.
[3]	Includes loans that are inadequately protected by the current net-worth and paying capacity of the borrower or by the collateral pledged, if any. Loss of principal or interest is considered reasonably possible or likely.
[4]	Includes loans that are on nonaccrual status or past due ninety days or more.
[5]	Includes only construction loans granted to commercial customers. Construction loans for individuals are included in Real Estate b Secured b Residential, below.
[6]	Includes loans obtained for commercial purposes that are also secured by residential real estate.

Loans_and_Leases_Age_Analysis_

Loans and Leases (Age Analysis of Past Due Financing Receivables) (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Financing Receivables That Are Accruing [Member]	'	'
Financing Receivable Recorded Investment Past Due [Line Items]	'	'
30-59 Days Past Due	$21,723,000	$57,234,000
60-89 Days Past Due	8,495,000	11,389,000
90 Days and Greater	10,303,000	9,757,000
Total Past Due	40,521,000	78,380,000
Current	13,275,694,000	13,396,891,000
Total Financing Receivables, Accruing	13,316,215,000	13,475,271,000
Financing Receivables That Are Accruing [Member] | Originated Loans And Leases [Member]	'	'
Financing Receivable Recorded Investment Past Due [Line Items]	'	'
30-59 Days Past Due	19,146,000	46,031,000
60-89 Days Past Due	7,398,000	9,381,000
90 Days and Greater	5,565,000	7,302,000
Total Past Due	32,109,000	62,714,000
Current	11,868,687,000	11,787,333,000
Total Financing Receivables, Accruing	11,900,796,000	11,850,047,000
Financing Receivables That Are Accruing [Member] | Purchased Loans And Leases [Member]	'	'
Financing Receivable Recorded Investment Past Due [Line Items]	'	'
30-59 Days Past Due	2,577,000	11,203,000
60-89 Days Past Due	1,097,000	2,008,000
90 Days and Greater	4,738,000	2,455,000
Total Past Due	8,412,000	15,666,000
Current	1,407,007,000	1,609,558,000
Total Financing Receivables, Accruing	1,415,419,000	1,625,224,000
Financing Receivables That Are Accruing [Member] | Commercial, Financial, And Agricultural [Member]	'	'
Financing Receivable Recorded Investment Past Due [Line Items]	'	'
30-59 Days Past Due	2,157,000	3,640,000
60-89 Days Past Due	974,000	518,000
90 Days and Greater	65,000	127,000
Total Past Due	3,196,000	4,285,000
Current	2,335,884,000	2,373,735,000
Total Financing Receivables, Accruing	2,339,080,000	2,378,020,000
Financing Receivables That Are Accruing [Member] | Real Estate - Construction [Member]	'	'
Financing Receivable Recorded Investment Past Due [Line Items]	'	'
30-59 Days Past Due	2,600,000	1,631,000
60-89 Days Past Due	87,000	903,000
90 Days and Greater	0	418,000
Total Past Due	2,687,000	2,952,000
Current	807,580,000	719,695,000
Total Financing Receivables, Accruing	810,267,000	722,647,000
Financing Receivables That Are Accruing [Member] | Real Estate Secured - Residential [Member]	'	'
Financing Receivable Recorded Investment Past Due [Line Items]	'	'
30-59 Days Past Due	7,866,000	27,441,000
60-89 Days Past Due	4,692,000	6,223,000
90 Days and Greater	9,170,000	7,274,000
Total Past Due	21,728,000	40,938,000
Current	4,127,562,000	4,140,127,000
Total Financing Receivables, Accruing	4,149,290,000	4,181,065,000
Financing Receivables That Are Accruing [Member] | Real Estate Secured - Commercial [Member]	'	'
Financing Receivable Recorded Investment Past Due [Line Items]	'	'
30-59 Days Past Due	3,728,000	11,583,000
60-89 Days Past Due	1,218,000	1,840,000
90 Days and Greater	822,000	667,000
Total Past Due	5,768,000	14,090,000
Current	3,956,383,000	4,008,579,000
Total Financing Receivables, Accruing	3,962,151,000	4,022,669,000
Financing Receivables That Are Accruing [Member] | Consumer [Member]	'	'
Financing Receivable Recorded Investment Past Due [Line Items]	'	'
30-59 Days Past Due	4,555,000	8,664,000
60-89 Days Past Due	1,407,000	1,537,000
90 Days and Greater	199,000	983,000
Total Past Due	6,161,000	11,184,000
Current	724,486,000	941,769,000
Total Financing Receivables, Accruing	730,647,000	952,953,000
Financing Receivables That Are Accruing [Member] | Leases [Member]	'	'
Financing Receivable Recorded Investment Past Due [Line Items]	'	'
30-59 Days Past Due	817,000	4,275,000
60-89 Days Past Due	117,000	368,000
90 Days and Greater	47,000	288,000
Total Past Due	981,000	4,931,000
Current	1,323,799,000	1,212,986,000
Total Financing Receivables, Accruing	1,324,780,000	1,217,917,000
Financing Receivables That Are Nonaccruing [Member]	'	'
Financing Receivable Recorded Investment Past Due [Line Items]	'	'
30-59 Days Past Due	5,953,000	8,937,000
60-89 Days Past Due	2,261,000	5,890,000
90 Days and Greater	63,558,000	46,788,000
Total Past Due	71,772,000	61,615,000
Current	37,734,000	39,200,000
Total Financing Receivables, Nonaccruing	109,506,000	100,815,000
Financing Receivables That Are Nonaccruing [Member] | Originated Loans And Leases [Member]	'	'
Financing Receivable Recorded Investment Past Due [Line Items]	'	'
30-59 Days Past Due	5,658,000	8,205,000
60-89 Days Past Due	2,131,000	3,806,000
90 Days and Greater	51,740,000	39,553,000
Total Past Due	59,529,000	51,564,000
Current	32,844,000	29,335,000
Total Financing Receivables, Nonaccruing	92,373,000	80,899,000
Financing Receivables That Are Nonaccruing [Member] | Purchased Loans And Leases [Member]	'	'
Financing Receivable Recorded Investment Past Due [Line Items]	'	'
30-59 Days Past Due	295,000	732,000
60-89 Days Past Due	130,000	2,084,000
90 Days and Greater	11,818,000	7,235,000
Total Past Due	12,243,000	10,051,000
Current	4,890,000	9,865,000
Total Financing Receivables, Nonaccruing	17,133,000	19,916,000
Financing Receivables That Are Nonaccruing [Member] | Commercial, Financial, And Agricultural [Member]	'	'
Financing Receivable Recorded Investment Past Due [Line Items]	'	'
30-59 Days Past Due	4,235,000	4,832,000
60-89 Days Past Due	708,000	855,000
90 Days and Greater	10,090,000	4,850,000
Total Past Due	15,033,000	10,537,000
Current	8,088,000	6,290,000
Total Financing Receivables, Nonaccruing	23,121,000	16,827,000
Financing Receivables That Are Nonaccruing [Member] | Real Estate - Construction [Member]	'	'
Financing Receivable Recorded Investment Past Due [Line Items]	'	'
30-59 Days Past Due	0	2,176,000
60-89 Days Past Due	87,000	788,000
90 Days and Greater	3,675,000	5,320,000
Total Past Due	3,762,000	8,284,000
Current	3,463,000	4,946,000
Total Financing Receivables, Nonaccruing	7,225,000	13,230,000
Financing Receivables That Are Nonaccruing [Member] | Real Estate Secured - Residential [Member]	'	'
Financing Receivable Recorded Investment Past Due [Line Items]	'	'
30-59 Days Past Due	512,000	609,000
60-89 Days Past Due	472,000	497,000
90 Days and Greater	15,734,000	16,518,000
Total Past Due	16,718,000	17,624,000
Current	6,935,000	5,741,000
Total Financing Receivables, Nonaccruing	23,653,000	23,365,000
Financing Receivables That Are Nonaccruing [Member] | Real Estate Secured - Commercial [Member]	'	'
Financing Receivable Recorded Investment Past Due [Line Items]	'	'
30-59 Days Past Due	1,206,000	1,320,000
60-89 Days Past Due	909,000	3,551,000
90 Days and Greater	34,029,000	19,952,000
Total Past Due	36,144,000	24,823,000
Current	18,340,000	21,324,000
Total Financing Receivables, Nonaccruing	54,484,000	46,147,000
Financing Receivables That Are Nonaccruing [Member] | Consumer [Member]	'	'
Financing Receivable Recorded Investment Past Due [Line Items]	'	'
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days and Greater	0	0
Total Past Due	0	0
Current	40,000	47,000
Total Financing Receivables, Nonaccruing	40,000	47,000
Financing Receivables That Are Nonaccruing [Member] | Leases [Member]	'	'
Financing Receivable Recorded Investment Past Due [Line Items]	'	'
30-59 Days Past Due	0	0
60-89 Days Past Due	85,000	199,000
90 Days and Greater	30,000	148,000
Total Past Due	115,000	347,000
Current	868,000	852,000
Total Financing Receivables, Nonaccruing	$983,000	$1,199,000

Loans_and_Leases_Impaired_Loan

Loans and Leases (Impaired Loans) (Detail) (USD $)	9 Months Ended		12 Months Ended
	Sep. 30, 2014		Dec. 31, 2013
Financing Receivable Impaired [Line Items]	'		'
Loans written down to fair value of collateral	$34,632,000		$43,363,000
Total impaired loans without a related reserve	148,312,000		195,033,000
Direct charge-offs	26,512,000		25,986,000
Subsequently Impaired Loans	5,163,000		9,498,000
Purchased Impaired Loans	106,835,000		138,445,000
Impaired Loans Without A Related Reserve [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	174,824,000		221,019,000
Recorded Investment in Impaired Loans	148,312,000	[1]	195,033,000	[2]
Related Charge-offs	26,512,000		25,986,000
Average Recorded Investment in Impaired Loans	127,102,000	[3]	196,848,000	[3]
Interest Income Recognized	1,830,000		2,903,000
Impaired Loans Without A Related Reserve [Member] | Originated Loans And Leases [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	70,279,000		88,900,000
Recorded Investment in Impaired Loans	46,640,000		66,086,000
Related Charge-offs	23,639,000		22,814,000
Average Recorded Investment in Impaired Loans	26,627,000	[3]	65,341,000	[3]
Interest Income Recognized	455,000		749,000
Impaired Loans Without A Related Reserve [Member] | Purchased Loans And Leases [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	104,545,000		132,119,000
Recorded Investment in Impaired Loans	101,672,000		128,947,000
Related Charge-offs	2,873,000		3,172,000
Average Recorded Investment in Impaired Loans	100,475,000	[3]	131,507,000	[3]
Interest Income Recognized	1,375,000		2,154,000
Impaired Loans Without A Related Reserve [Member] | Commercial, Financial, And Agricultural [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	16,536,000		31,196,000
Recorded Investment in Impaired Loans	13,622,000		28,034,000
Related Charge-offs	2,914,000		3,162,000
Average Recorded Investment in Impaired Loans	13,666,000	[3]	29,316,000	[3]
Interest Income Recognized	152,000		390,000
Impaired Loans Without A Related Reserve [Member] | Real Estate - Construction [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	8,113,000		17,851,000
Recorded Investment in Impaired Loans	7,514,000		14,215,000
Related Charge-offs	599,000		3,636,000
Average Recorded Investment in Impaired Loans	8,220,000	[3]	14,715,000	[3]
Interest Income Recognized	73,000		140,000
Impaired Loans Without A Related Reserve [Member] | Real Estate Secured - Residential [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	21,582,000		28,308,000
Recorded Investment in Impaired Loans	21,408,000		27,645,000
Related Charge-offs	174,000		663,000
Average Recorded Investment in Impaired Loans	17,743,000	[3]	27,800,000	[3]
Interest Income Recognized	232,000		297,000
Impaired Loans Without A Related Reserve [Member] | Real Estate Secured - Commercial [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	128,593,000		143,664,000
Recorded Investment in Impaired Loans	105,768,000		125,139,000
Related Charge-offs	22,825,000		18,525,000
Average Recorded Investment in Impaired Loans	87,473,000	[3]	125,003,000	[3]
Interest Income Recognized	1,373,000		2,076,000
Impaired Loans Without A Related Reserve [Member] | Consumer [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	0		0
Recorded Investment in Impaired Loans	0		0
Related Charge-offs	0		0
Average Recorded Investment in Impaired Loans	0	[3]	14,000	[3]
Interest Income Recognized	0		0
Impaired Loans With A Related Reserve [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	77,157,000		88,795,000
Recorded Investment in Impaired Loans	59,835,000		67,841,000
Related Charge-offs	17,322,000		20,954,000
Related Specific Allowance	12,394,000		13,625,000
Average Recorded Investment in Impaired Loans	48,382,000	[3]	65,585,000	[3]
Interest Income Recognized	1,022,000		1,317,000
Impaired Loans With A Related Reserve [Member] | Originated Loans And Leases [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	71,261,000		78,015,000
Recorded Investment in Impaired Loans	54,672,000		58,343,000
Related Charge-offs	16,589,000		19,672,000
Related Specific Allowance	10,780,000		11,612,000
Average Recorded Investment in Impaired Loans	45,605,000	[3]	55,881,000	[3]
Interest Income Recognized	969,000		1,172,000
Impaired Loans With A Related Reserve [Member] | Purchased Loans And Leases [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	5,896,000		10,780,000
Recorded Investment in Impaired Loans	5,163,000		9,498,000
Related Charge-offs	733,000		1,282,000
Related Specific Allowance	1,614,000		2,013,000
Average Recorded Investment in Impaired Loans	2,777,000	[3]	9,704,000	[3]
Interest Income Recognized	53,000		145,000
Impaired Loans With A Related Reserve [Member] | Commercial, Financial, And Agricultural [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	13,156,000		6,864,000
Recorded Investment in Impaired Loans	13,156,000		5,879,000
Related Charge-offs	0		985,000
Related Specific Allowance	6,116,000		3,008,000
Average Recorded Investment in Impaired Loans	13,073,000	[3]	5,893,000	[3]
Interest Income Recognized	162,000		154,000
Impaired Loans With A Related Reserve [Member] | Real Estate - Construction [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	8,173,000		15,202,000
Recorded Investment in Impaired Loans	3,136,000		7,288,000
Related Charge-offs	5,037,000		7,914,000
Related Specific Allowance	655,000		1,819,000
Average Recorded Investment in Impaired Loans	3,330,000	[3]	5,831,000	[3]
Interest Income Recognized	55,000		228,000
Impaired Loans With A Related Reserve [Member] | Real Estate Secured - Residential [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	23,818,000		37,499,000
Recorded Investment in Impaired Loans	22,397,000		35,153,000
Related Charge-offs	1,421,000		2,346,000
Related Specific Allowance	3,209,000		4,753,000
Average Recorded Investment in Impaired Loans	5,355,000	[3]	35,273,000	[3]
Interest Income Recognized	280,000		554,000
Impaired Loans With A Related Reserve [Member] | Real Estate Secured - Commercial [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	30,931,000		27,238,000
Recorded Investment in Impaired Loans	20,095,000		17,529,000
Related Charge-offs	10,836,000		9,709,000
Related Specific Allowance	2,300,000		3,827,000
Average Recorded Investment in Impaired Loans	26,591,000	[3]	16,546,000	[3]
Interest Income Recognized	497,000		325,000
Impaired Loans With A Related Reserve [Member] | Consumer [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	1,079,000		1,992,000
Recorded Investment in Impaired Loans	1,051,000		1,992,000
Related Charge-offs	28,000		0
Related Specific Allowance	114,000		218,000
Average Recorded Investment in Impaired Loans	33,000	[3]	2,042,000	[3]
Interest Income Recognized	28,000		56,000
Impaired Loans [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	251,981,000		309,814,000
Recorded Investment in Impaired Loans	208,147,000		262,874,000
Related Charge-offs	43,834,000		46,940,000
Related Specific Allowance	12,394,000		13,625,000
Average Recorded Investment in Impaired Loans	175,484,000	[3]	262,433,000	[3]
Interest Income Recognized	2,852,000		4,220,000
Impaired Loans [Member] | Originated Loans And Leases [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	141,540,000		166,915,000
Recorded Investment in Impaired Loans	101,312,000		124,429,000
Related Charge-offs	40,228,000		42,486,000
Related Specific Allowance	10,780,000		11,612,000
Average Recorded Investment in Impaired Loans	72,232,000	[3]	121,222,000	[3]
Interest Income Recognized	1,424,000		1,921,000
Impaired Loans [Member] | Purchased Loans And Leases [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	110,441,000	[4]	142,899,000	[5]
Recorded Investment in Impaired Loans	106,835,000	[4]	138,445,000	[5]
Related Charge-offs	3,606,000	[4]	4,454,000	[5]
Related Specific Allowance	1,614,000	[4]	2,013,000	[5]
Average Recorded Investment in Impaired Loans	103,252,000	[3],[4]	141,211,000	[3],[5]
Interest Income Recognized	1,428,000	[4]	2,299,000	[5]
Impaired Loans [Member] | Commercial, Financial, And Agricultural [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	29,692,000		38,060,000
Recorded Investment in Impaired Loans	26,778,000		33,913,000
Related Charge-offs	2,914,000		4,147,000
Related Specific Allowance	6,116,000		3,008,000
Average Recorded Investment in Impaired Loans	26,739,000	[3]	35,209,000	[3]
Interest Income Recognized	314,000		544,000
Impaired Loans [Member] | Real Estate - Construction [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	16,286,000		33,053,000
Recorded Investment in Impaired Loans	10,650,000		21,503,000
Related Charge-offs	5,636,000		11,550,000
Related Specific Allowance	655,000		1,819,000
Average Recorded Investment in Impaired Loans	11,550,000	[3]	20,546,000	[3]
Interest Income Recognized	128,000		368,000
Impaired Loans [Member] | Real Estate Secured - Residential [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	45,400,000		65,807,000
Recorded Investment in Impaired Loans	43,805,000		62,798,000
Related Charge-offs	1,595,000		3,009,000
Related Specific Allowance	3,209,000		4,753,000
Average Recorded Investment in Impaired Loans	23,098,000	[3]	63,073,000	[3]
Interest Income Recognized	512,000		851,000
Impaired Loans [Member] | Real Estate Secured - Commercial [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	159,524,000		170,902,000
Recorded Investment in Impaired Loans	125,863,000		142,668,000
Related Charge-offs	33,661,000		28,234,000
Related Specific Allowance	2,300,000		3,827,000
Average Recorded Investment in Impaired Loans	114,064,000	[3]	141,549,000	[3]
Interest Income Recognized	1,870,000		2,401,000
Impaired Loans [Member] | Consumer [Member]	'		'
Financing Receivable Impaired [Line Items]	'		'
Unpaid Principal Balance	1,079,000		1,992,000
Recorded Investment in Impaired Loans	1,051,000		1,992,000
Related Charge-offs	28,000		0
Related Specific Allowance	114,000		218,000
Average Recorded Investment in Impaired Loans	33,000	[3]	2,056,000	[3]
Interest Income Recognized	$28,000		$56,000
[1]	$34,632 of the $148,312 total impaired loans without a related reserve represents loans that had been written down to the fair value of the underlying collateral adjusted for selling costs through direct charge-offs of $26,512.
[2]	$43,363 of the $195,033 total impaired loans without a related reserve represents loans that had been written down to the fair value of the underlying collateral adjusted for selling costs through direct charge-offs of $25,986.
[3]	Average recorded investment in impaired loans is calculated on a quarterly basis using daily balances.
[4]	$5,163 of the $106,835 purchased impaired loans were subsequently impaired after being acquired.
[5]	$9,498 of the $138,445 purchased impaired loans were subsequently impaired after being acquired.

Loans_and_Leases_Troubled_Debt

Loans and Leases (Troubled Debt Restructurings By Class Segment) (Detail) (USD $)

3 Months Ended

9 Months Ended

12 Months Ended

In Thousands, unless otherwise specified

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Jun. 30, 2014

Jun. 30, 2013

Dec. 31, 2012

Financing Receivable Modifications [Line Items]

'

'

'

'

'

'

'

'

Total performing TDRs

$42,418

'

$42,418

'

$72,133

'

'

'

TDRs [Member]

'

'

'

'

'

'

'

'

Financing Receivable Modifications [Line Items]

'

'

'

'

'

'

'

'

Total performing TDRs

42,418

69,975

42,418

69,975

72,133

40,938

63,822

67,775

Non-performing TDRs

19,522

[1],[2]

22,166

[1]

19,522

[1],[2]

22,166

[1]

22,676

[2]

'

'

'

Total TDRs

61,940

'

61,940

'

94,809

'

'

'

Performing TDRs

68.00%

76.00%

68.00%

76.00%

76.00%

'

'

'

Non-performing TDRs

32.00%

24.00%

32.00%

24.00%

24.00%

'

'

'

Commercial, Financial, And Agricultural [Member] | TDRs [Member]

'

'

'

'

'

'

'

'

Financing Receivable Modifications [Line Items]

'

'

'

'

'

'

'

'

Total performing TDRs

4,044

'

4,044

'

6,885

'

'

'

Real Estate - Construction [Member] | TDRs [Member]

'

'

'

'

'

'

'

'

Financing Receivable Modifications [Line Items]

'

'

'

'

'

'

'

'

Total performing TDRs

319

'

319

'

615

'

'

'

Real Estate Secured - Residential [Member] | TDRs [Member]

'

'

'

'

'

'

'

'

Financing Receivable Modifications [Line Items]

'

'

'

'

'

'

'

'

Total performing TDRs

20,231

'

20,231

'

31,623

'

'

'

Real Estate Secured - Commercial [Member] | TDRs [Member]

'

'

'

'

'

'

'

'

Financing Receivable Modifications [Line Items]

'

'

'

'

'

'

'

'

Total performing TDRs

16,780

'

16,780

'

31,295

'

'

'

Consumer [Member] | TDRs [Member]

'

'

'

'

'

'

'

'

Financing Receivable Modifications [Line Items]

'

'

'

'

'

'

'

'

Total performing TDRs

$1,044

'

$1,044

'

$1,715

'

'

'

[1]

Included in Age Analysis of Past Due Financing Receivables.

[2]

These loans are included in the 90 day past due and nonaccrual categories.

Loans_and_Leases_Schedule_Of_T

Loans and Leases (Schedule Of Troubled Debt Restructurings Balance And Activity) (Detail) (USD $)	3 Months Ended				9 Months Ended				12 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013		Dec. 31, 2013
Troubled Debt Restructurings Balance And Activity [Line Items]	'		'		'		'		'
Performing TDRs, end of period	$42,418,000		'		$42,418,000		'		$72,133,000
TDRs [Member]	'		'		'		'		'
Troubled Debt Restructurings Balance And Activity [Line Items]	'		'		'		'		'
Performing TDRs, beginning of period	40,938,000		63,822,000		72,133,000		67,775,000		67,775,000
New restructurings as TDRs	2,684,000		13,336,000		6,767,000		38,405,000		'
Repayments and payoffs	-848,000		-830,000		-1,853,000		-4,080,000		'
Charge-offs after restructuring	-26,000		-9,000		-455,000		-6,734,000		'
Transfer to nonaccrual, past due 90 days or greater, non-performing TDRs	-281,000		-5,407,000		-5,969,000		-11,449,000		'
Transfer out of TDR status	-49,000	[1]	-938,000	[1]	-28,204,000	[1]	-13,551,000	[1]	'
Other, net	0		1,000		-1,000		-391,000	[2]	'
Performing TDRs, end of period	42,418,000		69,975,000		42,418,000		69,975,000		72,133,000
Non-performing TDRs, end of period	19,522,000	[3],[4]	22,166,000	[3]	19,522,000	[3],[4]	22,166,000	[3]	22,676,000	[4]
Performing TDRs	68.00%		76.00%		68.00%		76.00%		76.00%
Non-performing TDRs	32.00%		24.00%		32.00%		24.00%		24.00%
Transferred To OREO	'		'		'		$203,000		'
[1]	Loans that have performed in accordance with the renegotiated terms for a minimum of six consecutive months with payments and at the time of renegotiation the loan's interest rate represented a then current market interest rate for a loan of similar risk.
[2]	Includes $203 transferred to OREO in 2013.
[3]	Included in Age Analysis of Past Due Financing Receivables.
[4]	These loans are included in the 90 day past due and nonaccrual categories.

Loans_and_Leases_Schedule_of_M

Loans and Leases (Schedule of Modifications for Troubled Debt Restructurings) (Detail) (TDRs [Member], USD $)	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
	Loans		Loans		Loans		Loans
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans	48		102		95		407
Pre-Modification Recorded Investment	$2,684,000		$13,336,000		$6,767,000		$38,405,000
Post-Modification Recorded Investment	2,684,000		13,336,000		6,767,000		38,405,000
Financial Effect Of Modification On Recorded Investment	0	[1]	0	[1]	5,000	[1]	0	[1]
Financial Effect Of Modification On Interest	3,000	[2]	45,000	[2]	-5,000	[2]	-223,000	[2]
Subsequently Defaulted [Member]	'		'		'		'
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans Subsequently Defaulted	6		56		50		119
Recorded Investment Subsequently Defaulted	209,000		5,915,000		5,391,000		15,295,000
Originated Loans And Leases [Member]	'		'		'		'
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans	47		99		90		386
Pre-Modification Recorded Investment	2,627,000		12,962,000		6,123,000		35,569,000
Post-Modification Recorded Investment	2,627,000		12,962,000		6,123,000		35,569,000
Financial Effect Of Modification On Recorded Investment	0	[1]	0	[1]	5,000	[1]	0	[1]
Financial Effect Of Modification On Interest	3,000	[2]	66,000	[2]	40,000	[2]	-159,000	[2]
Originated Loans And Leases [Member] | Subsequently Defaulted [Member]	'		'		'		'
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans Subsequently Defaulted	6		53		46		111
Recorded Investment Subsequently Defaulted	209,000		5,849,000		2,745,000		14,692,000
Purchased Loans And Leases [Member]	'		'		'		'
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans	1		3		5		21
Pre-Modification Recorded Investment	57,000		374,000		644,000		2,836,000
Post-Modification Recorded Investment	57,000		374,000		644,000		2,836,000
Financial Effect Of Modification On Recorded Investment	0	[1]	0	[1]	0	[1]	0	[1]
Financial Effect Of Modification On Interest	0	[2]	-21,000	[2]	-45,000	[2]	-64,000	[2]
Purchased Loans And Leases [Member] | Subsequently Defaulted [Member]	'		'		'		'
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans Subsequently Defaulted	0		3		4		8
Recorded Investment Subsequently Defaulted	0		66,000		2,646,000		603,000
Commercial, Financial, And Agricultural [Member] | Combination Of Modification Types [Member]	'		'		'		'
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans	0		1		0		2
Pre-Modification Recorded Investment	0		51,000		0		292,000
Post-Modification Recorded Investment	0		51,000		0		292,000
Financial Effect Of Modification On Recorded Investment	0	[1]	0	[1]	0	[1]	0	[1]
Financial Effect Of Modification On Interest	0	[2]	0	[2]	0	[2]	0	[2]
Commercial, Financial, And Agricultural [Member] | Bankruptcies And Maturity Date Extensions [Member]	'		'		'		'
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans	3		6		9		29
Pre-Modification Recorded Investment	124,000		845,000		226,000		9,379,000
Post-Modification Recorded Investment	124,000		845,000		226,000		9,379,000
Financial Effect Of Modification On Recorded Investment	0	[1]	0	[1]	0	[1]	0	[1]
Financial Effect Of Modification On Interest	0	[2]	-6,000	[2]	0	[2]	-6,000	[2]
Commercial, Financial, And Agricultural [Member] | Subsequently Defaulted [Member]	'		'		'		'
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans Subsequently Defaulted	0		3		11		15
Recorded Investment Subsequently Defaulted	0		33,000		2,027,000		7,334,000
Real Estate - Construction [Member] | Combination Of Modification Types [Member]	'		'		'		'
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans	0		0		0		0
Pre-Modification Recorded Investment	0		0		0		0
Post-Modification Recorded Investment	0		0		0		0
Financial Effect Of Modification On Recorded Investment	0	[1]	0	[1]	0	[1]	0	[1]
Financial Effect Of Modification On Interest	0	[2]	0	[2]	0	[2]	0	[2]
Real Estate - Construction [Member] | Bankruptcies And Maturity Date Extensions [Member]	'		'		'		'
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans	0		0		0		2
Pre-Modification Recorded Investment	0		0		0		137,000
Post-Modification Recorded Investment	0		0		0		137,000
Financial Effect Of Modification On Recorded Investment	0	[1]	0	[1]	0	[1]	0	[1]
Financial Effect Of Modification On Interest	0	[2]	0	[2]	0	[2]	0	[2]
Real Estate - Construction [Member] | Subsequently Defaulted [Member]	'		'		'		'
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans Subsequently Defaulted	0		1		0		3
Recorded Investment Subsequently Defaulted	0		117,000		0		254,000
Real Estate Secured - Residential [Member] | Combination Of Modification Types [Member]	'		'		'		'
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans	0		8		7		25
Pre-Modification Recorded Investment	0		1,313,000		1,100,000		3,815,000
Post-Modification Recorded Investment	0		1,313,000		1,100,000		3,815,000
Financial Effect Of Modification On Recorded Investment	0	[1]	0	[1]	0	[1]	0	[1]
Financial Effect Of Modification On Interest	0	[2]	51,000	[2]	-8,000	[2]	-21,000	[2]
Real Estate Secured - Residential [Member] | Bankruptcies And Maturity Date Extensions [Member]	'		'		'		'
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans	25		37		41		136
Pre-Modification Recorded Investment	2,397,000		3,715,000		4,786,000		12,038,000
Post-Modification Recorded Investment	2,397,000		3,715,000		4,786,000		12,038,000
Financial Effect Of Modification On Recorded Investment	0	[1]	0	[1]	0	[1]	0	[1]
Financial Effect Of Modification On Interest	3,000	[2]	0	[2]	3,000	[2]	0	[2]
Real Estate Secured - Residential [Member] | Subsequently Defaulted [Member]	'		'		'		'
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans Subsequently Defaulted	3		17		11		30
Recorded Investment Subsequently Defaulted	181,000		862,000		578,000		2,152,000
Real Estate Secured - Commercial [Member] | Combination Of Modification Types [Member]	'		'		'		'
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans	0		0		1		1
Pre-Modification Recorded Investment	0		0		375,000		1,436,000
Post-Modification Recorded Investment	0		0		375,000		1,436,000
Financial Effect Of Modification On Recorded Investment	0	[1]	0	[1]	0	[1]	0	[1]
Financial Effect Of Modification On Interest	0	[2]	0	[2]	0	[2]	-196,000	[2]
Real Estate Secured - Commercial [Member] | Bankruptcies And Maturity Date Extensions [Member]	'		'		'		'
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans	0		7		0		19
Pre-Modification Recorded Investment	0		7,066,000		0		9,565,000
Post-Modification Recorded Investment	0		7,066,000		0		9,565,000
Financial Effect Of Modification On Recorded Investment	0	[1]	0	[1]	0	[1]	0	[1]
Financial Effect Of Modification On Interest	0	[2]	0	[2]	0	[2]	0	[2]
Real Estate Secured - Commercial [Member] | Subsequently Defaulted [Member]	'		'		'		'
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans Subsequently Defaulted	0		4		4		7
Recorded Investment Subsequently Defaulted	0		4,640,000		2,599,000		5,087,000
Consumer [Member] | Combination Of Modification Types [Member]	'		'		'		'
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans	0		1		0		1
Pre-Modification Recorded Investment	0		26,000		0		26,000
Post-Modification Recorded Investment	0		26,000		0		26,000
Financial Effect Of Modification On Recorded Investment	0	[1]	0	[1]	0	[1]	0	[1]
Financial Effect Of Modification On Interest	0	[2]	0	[2]	0	[2]	0	[2]
Consumer [Member] | Bankruptcies And Maturity Date Extensions [Member]	'		'		'		'
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans	20		42		37		192
Pre-Modification Recorded Investment	163,000		320,000		280,000		1,717,000
Post-Modification Recorded Investment	163,000		320,000		280,000		1,717,000
Financial Effect Of Modification On Recorded Investment	0	[1]	0	[1]	5,000	[1]	0	[1]
Financial Effect Of Modification On Interest	0	[2]	0	[2]	0	[2]	0	[2]
Consumer [Member] | Subsequently Defaulted [Member]	'		'		'		'
Financing Receivable Modifications [Line Items]	'		'		'		'
Number Of Loans Subsequently Defaulted	3		31		24		64
Recorded Investment Subsequently Defaulted	$28,000		$263,000		$187,000		$468,000
[1]	Financial effects impacting the recorded investment include principal payments, advances, charge-offs, and capitalized past-due amounts.
[2]	Represents the present value of interest rate concessions discounted at the effective rate of the original loan.

Loans_and_Leases_Outstanding_P

Loans and Leases (Outstanding Principal Balance and the Related Carrying Amount of Acquired Loans) (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Loans Individually Evaluated For Impairment [Member]	'	'
Acquired Loans Unpaid Principal Balance And Related Carrying Amount [Line Items]	'	'
Unpaid principal balance	$129,457	$176,351
Carrying amount	106,836	138,445
Loans Collectively Evaluated For Impairment [Member]	'	'
Acquired Loans Unpaid Principal Balance And Related Carrying Amount [Line Items]	'	'
Unpaid principal balance	1,322,877	1,509,870
Carrying amount	1,325,716	1,506,695
Purchased Loan [Member]	'	'
Acquired Loans Unpaid Principal Balance And Related Carrying Amount [Line Items]	'	'
Unpaid principal balance	1,452,334	1,686,221
Carrying amount	$1,432,552	$1,645,140

Loans_and_Leases_Schedule_of_C

Loans and Leases (Schedule of Changes in Accretable Discount Related to Credit Impaired Acquired Loans) (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Disclosure Loans And Leases Schedule Of Changes In Accretable Discount Related To Credit Impaired Acquired Loans [Abstract]	'	'	'	'
Balance - beginning of period	$43,319,000	$49,187,000	$46,219,000	$62,868,000
Accretion recognized during the period	-2,309,000	-4,229,000	-8,042,000	-16,522,000
Net reclassification from non-accretable to accretable	0	1,481,000	2,833,000	93,000
Balance - end of period	$41,010,000	$46,439,000	$41,010,000	$46,439,000

Allowance_For_Loan_Lease_Losse2

Allowance For Loan & Lease Losses (Narrative) (Detail) (USD $)	Sep. 30, 2014
Allowance For Loan And Lease Losses [Abstract]	'
Watch List Relationship Threshold	$1,000,000

Allowance_For_Loan_Lease_Losse3

Allowance For Loan & Lease Losses (Allowance For Credit Losses And Recorded Investment In Financing Receivables) (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Allowance For Credit Losses, Beginning Balance	$144,483,000	$178,594,000	$157,608,000	$184,020,000
Charge-Offs	-20,969,000	-25,934,000	-50,311,000	-67,465,000
Recoveries	4,356,000	9,080,000	12,809,000	21,185,000
Transfer For Loans Designated As Held For Sale	0	'	-1,236,000	'
Provision	9,000,000	5,000,000	18,000,000	29,000,000
Allowance For Credit Losses, Ending Balance	136,870,000	166,740,000	136,870,000	166,740,000
Individually evaluated for impairment	12,394,000	15,305,000	12,394,000	15,305,000
Collectively evaluated for impairment	124,476,000	151,435,000	124,476,000	151,435,000
Financing Receivables, Ending Balance	13,425,721,000	13,376,454,000	13,425,721,000	13,376,454,000
Financing receivables, Individually evaluated for impairment, Ending Balance	208,147,000	264,427,000	208,147,000	264,427,000
Financing receivables, Collectively evaluated for impairment, Ending Balance	13,217,574,000	13,112,027,000	13,217,574,000	13,112,027,000
Originated Loans And Leases [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Individually evaluated for impairment	10,780,000	11,718,000	10,780,000	11,718,000
Collectively evaluated for impairment	124,476,000	151,435,000	124,476,000	151,435,000
Financing receivables, Individually evaluated for impairment, Ending Balance	101,312,000	125,924,000	101,312,000	125,924,000
Financing receivables, Collectively evaluated for impairment, Ending Balance	11,891,857,000	11,496,539,000	11,891,857,000	11,496,539,000
Purchased Loans And Leases [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Individually evaluated for impairment	1,614,000	3,587,000	1,614,000	3,587,000
Collectively evaluated for impairment	0	0	0	0
Financing receivables, Individually evaluated for impairment, Ending Balance	106,835,000	138,503,000	106,835,000	138,503,000
Financing receivables, Collectively evaluated for impairment, Ending Balance	1,325,717,000	1,615,488,000	1,325,717,000	1,615,488,000
Commercial, Financial, And Agricultural [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Allowance For Credit Losses, Beginning Balance	41,401,000	30,237,000	40,590,000	30,207,000
Charge-Offs	-9,398,000	-5,892,000	-23,006,000	-26,758,000
Recoveries	1,329,000	2,161,000	4,481,000	6,197,000
Transfer For Loans Designated As Held For Sale	0	'	0	'
Provision	12,540,000	4,491,000	23,807,000	21,351,000
Allowance For Credit Losses, Ending Balance	45,872,000	30,997,000	45,872,000	30,997,000
Individually evaluated for impairment	6,115,000	3,129,000	6,115,000	3,129,000
Collectively evaluated for impairment	39,757,000	26,916,000	39,757,000	26,916,000
Financing Receivables, Ending Balance	2,362,201,000	2,273,735,000	2,362,201,000	2,273,735,000
Financing receivables, Individually evaluated for impairment, Ending Balance	26,779,000	28,435,000	26,779,000	28,435,000
Financing receivables, Collectively evaluated for impairment, Ending Balance	2,335,422,000	2,245,300,000	2,335,422,000	2,245,300,000
Commercial, Financial, And Agricultural [Member] | Originated Loans And Leases [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Individually evaluated for impairment	6,089,000	1,853,000	6,089,000	1,853,000
Collectively evaluated for impairment	39,757,000	26,916,000	39,757,000	26,916,000
Financing receivables, Individually evaluated for impairment, Ending Balance	20,435,000	12,236,000	20,435,000	12,236,000
Financing receivables, Collectively evaluated for impairment, Ending Balance	2,209,028,000	2,133,682,000	2,209,028,000	2,133,682,000
Commercial, Financial, And Agricultural [Member] | Purchased Loans And Leases [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Individually evaluated for impairment	26,000	1,276,000	26,000	1,276,000
Collectively evaluated for impairment	0	0	0	0
Financing receivables, Individually evaluated for impairment, Ending Balance	6,344,000	16,199,000	6,344,000	16,199,000
Financing receivables, Collectively evaluated for impairment, Ending Balance	126,394,000	111,618,000	126,394,000	111,618,000
Real Estate - Construction [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Allowance For Credit Losses, Beginning Balance	18,180,000	23,568,000	26,189,000	25,171,000
Charge-Offs	-1,038,000	-8,103,000	-1,668,000	-14,036,000
Recoveries	262,000	1,599,000	1,440,000	3,786,000
Transfer For Loans Designated As Held For Sale	0	'	0	'
Provision	-3,606,000	6,910,000	-12,163,000	9,053,000
Allowance For Credit Losses, Ending Balance	13,798,000	23,974,000	13,798,000	23,974,000
Individually evaluated for impairment	656,000	2,105,000	656,000	2,105,000
Collectively evaluated for impairment	13,142,000	21,839,000	13,142,000	21,839,000
Financing Receivables, Ending Balance	817,492,000	765,246,000	817,492,000	765,246,000
Financing receivables, Individually evaluated for impairment, Ending Balance	10,650,000	26,225,000	10,650,000	26,225,000
Financing receivables, Collectively evaluated for impairment, Ending Balance	806,842,000	739,021,000	806,842,000	739,021,000
Real Estate - Construction [Member] | Originated Loans And Leases [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Individually evaluated for impairment	656,000	1,762,000	656,000	1,762,000
Collectively evaluated for impairment	13,142,000	21,839,000	13,142,000	21,839,000
Financing receivables, Individually evaluated for impairment, Ending Balance	3,307,000	13,905,000	3,307,000	13,905,000
Financing receivables, Collectively evaluated for impairment, Ending Balance	761,491,000	660,317,000	761,491,000	660,317,000
Real Estate - Construction [Member] | Purchased Loans And Leases [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Individually evaluated for impairment	0	343,000	0	343,000
Collectively evaluated for impairment	0	0	0	0
Financing receivables, Individually evaluated for impairment, Ending Balance	7,343,000	12,320,000	7,343,000	12,320,000
Financing receivables, Collectively evaluated for impairment, Ending Balance	45,351,000	78,704,000	45,351,000	78,704,000
Real Estate Secured - Residential [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Allowance For Credit Losses, Beginning Balance	21,376,000	37,716,000	24,076,000	41,276,000
Charge-Offs	-3,020,000	-4,151,000	-10,140,000	-9,771,000
Recoveries	471,000	627,000	2,342,000	1,879,000
Transfer For Loans Designated As Held For Sale	0	'	0	'
Provision	2,264,000	-4,995,000	4,813,000	-4,187,000
Allowance For Credit Losses, Ending Balance	21,091,000	29,197,000	21,091,000	29,197,000
Individually evaluated for impairment	3,209,000	2,615,000	3,209,000	2,615,000
Collectively evaluated for impairment	17,882,000	26,596,000	17,882,000	26,596,000
Financing Receivables, Ending Balance	4,172,943,000	4,145,522,000	4,172,943,000	4,145,522,000
Financing receivables, Individually evaluated for impairment, Ending Balance	43,805,000	63,184,000	43,805,000	63,184,000
Financing receivables, Collectively evaluated for impairment, Ending Balance	4,129,138,000	4,082,338,000	4,129,138,000	4,082,338,000
Real Estate Secured - Residential [Member] | Originated Loans And Leases [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Individually evaluated for impairment	2,076,000	1,440,000	2,076,000	1,440,000
Collectively evaluated for impairment	17,882,000	26,596,000	17,882,000	26,596,000
Financing receivables, Individually evaluated for impairment, Ending Balance	23,689,000	33,910,000	23,689,000	33,910,000
Financing receivables, Collectively evaluated for impairment, Ending Balance	3,577,869,000	3,317,817,000	3,577,869,000	3,317,817,000
Real Estate Secured - Residential [Member] | Purchased Loans And Leases [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Individually evaluated for impairment	1,133,000	1,175,000	1,133,000	1,175,000
Collectively evaluated for impairment	0	0	0	0
Financing receivables, Individually evaluated for impairment, Ending Balance	20,116,000	29,274,000	20,116,000	29,274,000
Financing receivables, Collectively evaluated for impairment, Ending Balance	551,269,000	764,521,000	551,269,000	764,521,000
Real Estate Secured - Commercial [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Allowance For Credit Losses, Beginning Balance	46,952,000	68,827,000	48,261,000	70,053,000
Charge-Offs	-5,144,000	-6,043,000	-8,828,000	-11,488,000
Recoveries	1,317,000	4,036,000	2,137,000	6,841,000
Transfer For Loans Designated As Held For Sale	0	'	0	'
Provision	-1,359,000	-1,602,000	196,000	-188,000
Allowance For Credit Losses, Ending Balance	41,766,000	65,218,000	41,766,000	65,218,000
Individually evaluated for impairment	2,300,000	7,406,000	2,300,000	7,406,000
Collectively evaluated for impairment	39,466,000	58,772,000	39,466,000	58,772,000
Financing Receivables, Ending Balance	4,016,635,000	4,109,329,000	4,016,635,000	4,109,329,000
Financing receivables, Individually evaluated for impairment, Ending Balance	125,862,000	144,589,000	125,862,000	144,589,000
Financing receivables, Collectively evaluated for impairment, Ending Balance	3,890,773,000	3,964,740,000	3,890,773,000	3,964,740,000
Real Estate Secured - Commercial [Member] | Originated Loans And Leases [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Individually evaluated for impairment	1,845,000	6,614,000	1,845,000	6,614,000
Collectively evaluated for impairment	39,466,000	58,772,000	39,466,000	58,772,000
Financing receivables, Individually evaluated for impairment, Ending Balance	52,832,000	64,143,000	52,832,000	64,143,000
Financing receivables, Collectively evaluated for impairment, Ending Balance	3,293,267,000	3,311,119,000	3,293,267,000	3,311,119,000
Real Estate Secured - Commercial [Member] | Purchased Loans And Leases [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Individually evaluated for impairment	455,000	792,000	455,000	792,000
Collectively evaluated for impairment	0	0	0	0
Financing receivables, Individually evaluated for impairment, Ending Balance	73,030,000	80,446,000	73,030,000	80,446,000
Financing receivables, Collectively evaluated for impairment, Ending Balance	597,506,000	653,621,000	597,506,000	653,621,000
Consumer [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Allowance For Credit Losses, Beginning Balance	1,276,000	3,155,000	2,266,000	3,722,000
Charge-Offs	-891,000	-1,051,000	-3,470,000	-2,397,000
Recoveries	277,000	325,000	988,000	886,000
Transfer For Loans Designated As Held For Sale	0	'	-1,236,000	'
Provision	636,000	-479,000	2,750,000	-261,000
Allowance For Credit Losses, Ending Balance	1,298,000	1,950,000	1,298,000	1,950,000
Individually evaluated for impairment	114,000	50,000	114,000	50,000
Collectively evaluated for impairment	1,184,000	1,908,000	1,184,000	1,908,000
Financing Receivables, Ending Balance	730,687,000	935,117,000	730,687,000	935,117,000
Financing receivables, Individually evaluated for impairment, Ending Balance	1,051,000	1,994,000	1,051,000	1,994,000
Financing receivables, Collectively evaluated for impairment, Ending Balance	729,636,000	933,123,000	729,636,000	933,123,000
Consumer [Member] | Originated Loans And Leases [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Individually evaluated for impairment	114,000	49,000	114,000	49,000
Collectively evaluated for impairment	1,184,000	1,908,000	1,184,000	1,908,000
Financing receivables, Individually evaluated for impairment, Ending Balance	1,049,000	1,730,000	1,049,000	1,730,000
Financing receivables, Collectively evaluated for impairment, Ending Balance	724,439,000	926,099,000	724,439,000	926,099,000
Consumer [Member] | Purchased Loans And Leases [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Individually evaluated for impairment	0	1,000	0	1,000
Collectively evaluated for impairment	0	0	0	0
Financing receivables, Individually evaluated for impairment, Ending Balance	2,000	264,000	2,000	264,000
Financing receivables, Collectively evaluated for impairment, Ending Balance	5,197,000	7,024,000	5,197,000	7,024,000
Leases [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Allowance For Credit Losses, Beginning Balance	13,875,000	14,750,000	15,259,000	13,341,000
Charge-Offs	-1,478,000	-694,000	-3,199,000	-3,015,000
Recoveries	700,000	332,000	1,421,000	1,596,000
Transfer For Loans Designated As Held For Sale	0	'	0	'
Provision	-228,000	640,000	-612,000	3,106,000
Allowance For Credit Losses, Ending Balance	12,869,000	15,028,000	12,869,000	15,028,000
Individually evaluated for impairment	0	0	0	0
Collectively evaluated for impairment	12,869,000	15,028,000	12,869,000	15,028,000
Financing Receivables, Ending Balance	1,325,763,000	1,147,505,000	1,325,763,000	1,147,505,000
Financing receivables, Individually evaluated for impairment, Ending Balance	0	0	0	0
Financing receivables, Collectively evaluated for impairment, Ending Balance	1,325,763,000	1,147,505,000	1,325,763,000	1,147,505,000
Leases [Member] | Originated Loans And Leases [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Individually evaluated for impairment	0	0	0	0
Collectively evaluated for impairment	12,869,000	15,028,000	12,869,000	15,028,000
Financing receivables, Individually evaluated for impairment, Ending Balance	0	0	0	0
Financing receivables, Collectively evaluated for impairment, Ending Balance	1,325,763,000	1,147,505,000	1,325,763,000	1,147,505,000
Leases [Member] | Purchased Loans And Leases [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Individually evaluated for impairment	0	0	0	0
Collectively evaluated for impairment	0	0	0	0
Financing receivables, Individually evaluated for impairment, Ending Balance	0	0	0	0
Financing receivables, Collectively evaluated for impairment, Ending Balance	0	0	0	0
Unallocated [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Allowance For Credit Losses, Beginning Balance	1,423,000	341,000	967,000	250,000
Charge-Offs	0	0	0	0
Recoveries	0	0	0	0
Transfer For Loans Designated As Held For Sale	0	'	0	'
Provision	-1,247,000	35,000	-791,000	126,000
Allowance For Credit Losses, Ending Balance	176,000	376,000	176,000	376,000
Collectively evaluated for impairment	176,000	376,000	176,000	376,000
Unallocated [Member] | Originated Loans And Leases [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Collectively evaluated for impairment	176,000	376,000	176,000	376,000
Unallocated [Member] | Purchased Loans And Leases [Member]	'	'	'	'
Financing Receivable Allowance For Credit Losses [Line Items]	'	'	'	'
Collectively evaluated for impairment	$0	$0	$0	$0

Goodwill_Key_Ratios_to_Measure

Goodwill (Key Ratios to Measure Goodwill of Bank Reporting Unit for Impairment) (Detail) (Bank Reporting Unit [Member])	12 Months Ended
	31-May-14	31-May-14		31-May-13
		Annual [Member]		Annual [Member]
Goodwill [Line Items]	'	'		'
Price to book	'	1.48		1.57
Price to tangible book	'	1.7		1.8
Price to earnings	'	20.5	[1]	22.1	[1]
Previous annual time period	'12 months	'		'
[1]	Last twelve months earnings.

Goodwill_Factors_Used_to_Measu

Goodwill (Factors Used to Measure Goodwill in Income Approach) (Detail) (Wealth Management Reporting Unit [Member], Annual [Member])	12 Months Ended
	31-May-14	31-May-13
Wealth Management Reporting Unit [Member] | Annual [Member]	'	'
Goodwill [Line Items]	'	'
Discount rate	19.50%	18.40%
Weighted-average increase in revenues	4.20%	5.00%
Weighted-average increase in expenses	4.70%	3.30%

Goodwill_Key_Ratios_Used_to_Me

Goodwill (Key Ratios Used to Measure Goodwill of Property and Casualty Insurance Reporting Unit for Impairment) (Detail) (Property And Casualty Insurance Reporting Unit [Member], Annual [Member])	31-May-14	31-May-13
Property And Casualty Insurance Reporting Unit [Member] | Annual [Member]	'	'
Goodwill [Line Items]	'	'
Average price to book	1.34	1.15
Median price to earnings	21.1	18.1

Goodwill_Narrative_Details

Goodwill (Narrative) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	31-May-14	31-May-13
Bank Reporting Unit [Member]	'	'
Goodwill [Line Items]	'	'
Goodwill allocated to bank reporting unit	$1,165,200	$1,165,200
Fair value of the bank reporting unit exceeding carrying value	25.40%	44.60%
Wealth Management Reporting Unit [Member]	'	'
Goodwill [Line Items]	'	'
Goodwill allocated to wealth management reporting unit	82,746	82,746
Future economic benefit period, in years	'10 years	'
Fair value of the wealth management reporting unit exceeding carrying value	51.50%	45.90%
Property And Casualty Insurance Reporting Unit [Member]	'	'
Goodwill [Line Items]	'	'
Goodwill allocated to property and casualty insurance reporting unit	$17,177	$17,177
Number of key ratios used in measuring the fair value of the property and casualty insurance reporting unit	2	'
Fair value of the property and casualty insurance reporting unit exceeding carrying value	25.60%	21.70%

Deposits_Detail

Deposits (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Deposits [Abstract]	'	'
Demand	$1,958,308	$1,913,526
Interest-Bearing Demand	3,087,166	2,909,376
Money Market	3,297,699	3,144,106
Savings	1,122,232	1,077,923
Time	2,265,787	2,113,209
Time Of $100 Or More	1,857,332	1,711,232
Total deposits	$13,588,524	$12,869,372

Income_Taxes_Detail

Income Taxes (Detail)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Taxes [Abstract]	'	'	'	'
Effective Tax Rate	29.80%	31.40%	28.50%	31.10%
Adjustment For Tax (Benefit) Expense From Discrete Items	-0.70%	0.30%	-2.00%	0.00%

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Loss (Components Of AOCI) (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income Loss [Line Items]	'	'	'	'
Accumulated Other Comprehensive Loss, Beginning Balance	'	'	($51,566,000)	'
Interest Expense	25,270,000	25,128,000	70,685,000	77,636,000
Net Realized Loss (Gain) On Sales And Impairment Of Securities	0	2,000	3,285,000	-51,000
Accumulated Other Comprehensive Loss, Ending Balance	-26,131,000	'	-26,131,000	'
Unrealized Gains (Losses) On Investment Securities With OTTI [Member]	'	'	'	'
Accumulated Other Comprehensive Income Loss [Line Items]	'	'	'	'
Accumulated Other Comprehensive Loss, Beginning Balance	-279,000	-750,000	-279,000	-839,000
AOCI Before Reclassifications, Net Of Tax	0	150,000	0	-76,000
Net Change In AOCI	0	150,000	0	239,000
Accumulated Other Comprehensive Loss, Ending Balance	-279,000	-600,000	-279,000	-600,000
Unrealized Gains (Losses) On Investment Securities With OTTI [Member] | Amounts Reclassified From AOCI [Member]	'	'	'	'
Accumulated Other Comprehensive Income Loss [Line Items]	'	'	'	'
Interest Expense	0	0	0	0
Net Realized Loss (Gain) On Sales And Impairment Of Securities	0	0	0	485,000
Total Before Income Taxes	0	0	0	485,000
Less: Income Taxes	0	0	0	-170,000
Net Of Income Taxes	0	0	0	315,000
Unrealized Gains (Losses) On Investment Securities All Other [Member]	'	'	'	'
Accumulated Other Comprehensive Income Loss [Line Items]	'	'	'	'
Accumulated Other Comprehensive Loss, Beginning Balance	10,320,000	-414,000	-7,195,000	37,521,000
AOCI Before Reclassifications, Net Of Tax	-908,000	1,994,000	18,742,000	-35,660,000
Net Change In AOCI	-908,000	1,993,000	16,607,000	-35,942,000
Accumulated Other Comprehensive Loss, Ending Balance	9,412,000	1,579,000	9,412,000	1,579,000
Unrealized Gains (Losses) On Investment Securities All Other [Member] | Amounts Reclassified From AOCI [Member]	'	'	'	'
Accumulated Other Comprehensive Income Loss [Line Items]	'	'	'	'
Interest Expense	0	0	0	0
Net Realized Loss (Gain) On Sales And Impairment Of Securities	0	-2,000	-3,285,000	-434,000
Total Before Income Taxes	0	-2,000	-3,285,000	-434,000
Less: Income Taxes	0	1,000	1,150,000	152,000
Net Of Income Taxes	0	-1,000	-2,135,000	-282,000
Unrealized Gains (Losses) On Cash Flow Hedges [Member]	'	'	'	'
Accumulated Other Comprehensive Income Loss [Line Items]	'	'	'	'
Accumulated Other Comprehensive Loss, Beginning Balance	-16,874,000	-25,437,000	-21,683,000	-34,636,000
AOCI Before Reclassifications, Net Of Tax	396,000	-2,434,000	-1,869,000	784,000
Net Change In AOCI	4,019,000	831,000	8,828,000	10,030,000
Accumulated Other Comprehensive Loss, Ending Balance	-12,855,000	-24,606,000	-12,855,000	-24,606,000
Unrealized Gains (Losses) On Cash Flow Hedges [Member] | Amounts Reclassified From AOCI [Member]	'	'	'	'
Accumulated Other Comprehensive Income Loss [Line Items]	'	'	'	'
Interest Expense	5,574,000	5,023,000	16,457,000	14,225,000
Net Realized Loss (Gain) On Sales And Impairment Of Securities	0	0	0	0
Total Before Income Taxes	5,574,000	5,023,000	16,457,000	14,225,000
Less: Income Taxes	-1,951,000	-1,758,000	-5,760,000	-4,979,000
Net Of Income Taxes	3,623,000	3,265,000	10,697,000	9,246,000
Post-Retirement Benefits [Member]	'	'	'	'
Accumulated Other Comprehensive Income Loss [Line Items]	'	'	'	'
Accumulated Other Comprehensive Loss, Beginning Balance	-22,409,000	-39,321,000	-22,409,000	-39,304,000
AOCI Before Reclassifications, Net Of Tax	0	0	0	-17,000
Net Change In AOCI	0	0	0	-17,000
Accumulated Other Comprehensive Loss, Ending Balance	-22,409,000	-39,321,000	-22,409,000	-39,321,000
Post-Retirement Benefits [Member] | Amounts Reclassified From AOCI [Member]	'	'	'	'
Accumulated Other Comprehensive Income Loss [Line Items]	'	'	'	'
Interest Expense	0	0	0	0
Net Realized Loss (Gain) On Sales And Impairment Of Securities	0	0	0	0
Total Before Income Taxes	0	0	0	0
Less: Income Taxes	0	0	0	0
Net Of Income Taxes	0	0	0	0
Accumulated Other Comprehensive Loss [Member]	'	'	'	'
Accumulated Other Comprehensive Income Loss [Line Items]	'	'	'	'
Accumulated Other Comprehensive Loss, Beginning Balance	-29,242,000	-65,922,000	-51,566,000	-37,258,000
AOCI Before Reclassifications, Net Of Tax	-512,000	-290,000	16,873,000	-34,969,000
Net Change In AOCI	3,111,000	2,974,000	25,435,000	-25,690,000
Accumulated Other Comprehensive Loss, Ending Balance	-26,131,000	-62,948,000	-26,131,000	-62,948,000
Accumulated Other Comprehensive Loss [Member] | Amounts Reclassified From AOCI [Member]	'	'	'	'
Accumulated Other Comprehensive Income Loss [Line Items]	'	'	'	'
Interest Expense	5,574,000	5,023,000	16,457,000	14,225,000
Net Realized Loss (Gain) On Sales And Impairment Of Securities	0	-2,000	-3,285,000	51,000
Total Before Income Taxes	5,574,000	5,021,000	13,172,000	14,276,000
Less: Income Taxes	-1,951,000	-1,757,000	-4,610,000	-4,997,000
Net Of Income Taxes	$3,623,000	$3,264,000	$8,562,000	$9,279,000

Pension_Components_Of_Net_Peri

Pension (Components Of Net Periodic Benefit Cost) (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Pension Benefits [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Service Cost	$0	$1,055,000	$0	$3,721,000
Interest Cost	1,923,000	1,835,000	5,768,000	5,423,000
Expected Return On Plan Assets	-2,336,000	-2,267,000	-7,009,000	-7,091,000
Amortization Of Prior Service Cost	0	6,000	0	19,000
Amortization Of Transition Obligation	0	0	0	0
Amortization Of Net Actuarial Loss	120,000	884,000	361,000	2,398,000
Net Periodic Postretirement Benefit Cost	-293,000	1,513,000	-880,000	4,470,000
Estimated Contributions, Next Fiscal Year	'	'	559,000	'
Contributions	'	'	419,000	'
Estimated Contributions, Current Fiscal Year	'	'	140,000	'
SERP [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Service Cost	108,000	69,000	251,000	695,000
Interest Cost	133,000	100,000	378,000	304,000
Expected Return On Plan Assets	0	0	0	0
Amortization Of Prior Service Cost	57,000	54,000	130,000	163,000
Amortization Of Transition Obligation	0	0	0	0
Amortization Of Net Actuarial Loss	41,000	52,000	98,000	165,000
Net Periodic Postretirement Benefit Cost	339,000	275,000	857,000	1,327,000
Other Postretirement Benefits [Member]	'	'	'	'
Defined Benefit Plan Disclosure [Line Items]	'	'	'	'
Service Cost	317,000	337,000	950,000	1,012,000
Interest Cost	246,000	217,000	739,000	651,000
Expected Return On Plan Assets	0	0	0	0
Amortization Of Prior Service Cost	29,000	29,000	86,000	86,000
Amortization Of Transition Obligation	0	2,000	0	6,000
Amortization Of Net Actuarial Loss	0	42,000	0	126,000
Net Periodic Postretirement Benefit Cost	592,000	627,000	1,775,000	1,881,000
Estimated Contributions, Next Fiscal Year	'	'	782,000	'
Contributions	'	'	587,000	'
Estimated Contributions, Current Fiscal Year	'	'	$195,000	'

Earnings_per_Share_EPS_Earning

Earnings per Share ("EPS") ( Earnings per Share Basic and Diluted) (Detail) (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Abstract]	'	'	'	'
Net Income Applicable To Common Shareholders	$33,468	$44,291	$114,124	$132,338
Average Common Shares Outstanding	184,985	187,096	186,683	186,840
Basic Earnings Per Common Share	$0.18	$0.24	$0.61	$0.71
Net Income Available To Common Shareholders	$33,468	$44,291	$114,124	$132,338
Average Common Shares Outstanding	184,985	187,096	186,683	186,840
Dilutive Potential Common Shares	739	1,013	762	976
Total Diluted Average Common Shares Outstanding	185,724	188,109	187,445	187,816
Diluted Earnings Per Common Share	$0.18	$0.24	$0.61	$0.70
Antidilutive Potential Common Stock Equivalents/Options	1,191	1,455	1,181	1,494

Derivative_Financial_Instrumen2

Derivative Financial Instruments (Narrative) (Detail) (USD $)

9 Months Ended

3 Months Ended

9 Months Ended

9 Months Ended

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2013

Not Designated As Hedging Instruments [Member]

Not Designated As Hedging Instruments [Member]

Not Designated As Hedging Instruments [Member]

Not Designated As Hedging Instruments [Member]

Cash Flow Hedges [Member]

Cash Flow Hedges [Member]

Cash Flow Hedges [Member]

Cash Flow Hedges [Member]

Cash Flow Hedges [Member]

Cash Flow Hedges [Member]

Cash Flow Hedges [Member]

DerivativeInstruments

DerivativeInstruments

DerivativeInstruments

DerivativeInstruments

Interest Expense [Member]

Interest Rate Swaps [Member]

Interest Rate Swaps [Member]

Interest Rate Swaps [Member]

DerivativeInstruments

DerivativeInstruments

DerivativeInstruments

Derivative [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of derivative instruments held

'

'

359

232

359

232

'

'

'

'

13

14

14

Future annual time period

'12 months

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate notional amount

'

'

$1,840,638,000

$1,540,599,000

$1,840,638,000

$1,540,599,000

$1,116,178,000

$1,146,437,000

$1,148,328,000

'

'

'

'

Estimated amount to be reclassified

'

'

'

'

'

'

'

'

'

16,723,000

'

'

'

Net (loss) gain related to changes in fair value of derivatives

'

'

-1,714,000

1,545,000

-3,326,000

3,159,000

'

'

'

'

'

'

'

Fair value of derivatives in net liability position with credit-risk-related Contingent Features

35,668,000

50,247,000

'

'

'

'

'

'

'

'

'

'

'

Cash collateral posted with derivative counterparties

$36,843,000

$42,813,000

'

'

'

'

'

'

'

'

'

'

'

Derivative_Financial_Instrumen3

Derivative Financial Instruments (Fair Value of Derivative Instruments) (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Derivatives Fair Value [Line Items]	'	'
Derivatives, Assets	$22,339,000	$24,316,000
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	35,668,000	50,247,000
Interest Rate Contract [Member] | Other Assets [Member] | Designated As Hedging Instrument [Member]	'	'
Derivatives Fair Value [Line Items]	'	'
Derivatives, Assets	725,000	1,419,000
Interest Rate Contract [Member] | Other Assets [Member] | Not Designated As Hedging Instruments [Member]	'	'
Derivatives Fair Value [Line Items]	'	'
Derivatives, Assets	21,614,000	22,897,000
Interest Rate Contract [Member] | Other Liabilities [Member] | Designated As Hedging Instrument [Member]	'	'
Derivatives Fair Value [Line Items]	'	'
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	17,506,000	31,662,000
Interest Rate Contract [Member] | Other Liabilities [Member] | Not Designated As Hedging Instruments [Member]	'	'
Derivatives Fair Value [Line Items]	'	'
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	$18,162,000	$18,585,000

Derivative_Financial_Instrumen4

Derivative Financial Instruments (Effect of Derivative Instruments on Earnings) (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Not Designated As Hedging Instruments [Member]	'	'	'	'
Derivative Instruments Gain Loss [Line Items]	'	'	'	'
Amount Of (Loss) Gain Recognized In Income On Derivatives	($1,714,000)	$1,545,000	($3,326,000)	$3,159,000
Cash Flow Hedges [Member] | Interest Rate Contract [Member]	'	'	'	'
Derivative Instruments Gain Loss [Line Items]	'	'	'	'
Amount Of Gain Recognized In OCI	4,010,000	831,000	6,224,000	10,030,000
Interest Expense [Member] | Cash Flow Hedges [Member] | Interest Rate Contract [Member]	'	'	'	'
Derivative Instruments Gain Loss [Line Items]	'	'	'	'
Amount Of Loss Reclassified From Accumulated OCI Into Income	-5,574,000	-5,023,000	-16,457,000	-14,225,000
Other Expense [Member] | Not Designated As Hedging Instruments [Member] | Interest Rate Contract [Member]	'	'	'	'
Derivative Instruments Gain Loss [Line Items]	'	'	'	'
Amount Of (Loss) Gain Recognized In Income On Derivatives	0	0	0	-1,000
Other Expense [Member] | Cash Flow Hedges [Member] | Interest Rate Contract [Member]	'	'	'	'
Derivative Instruments Gain Loss [Line Items]	'	'	'	'
Amount Of Loss Recognized In Income (Ineffective Portion)	0	0	0	0
Other Income [Member] | Not Designated As Hedging Instruments [Member] | Interest Rate Contract [Member]	'	'	'	'
Derivative Instruments Gain Loss [Line Items]	'	'	'	'
Amount Of (Loss) Gain Recognized In Income On Derivatives	($1,714,000)	$1,545,000	($3,326,000)	$3,160,000

Balance_Sheet_Offsetting_Detai

Balance Sheet Offsetting (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Derivative [Line Items]	'	'
Derivative Financial Assets, Net Amounts Presented In The Consolidated Balance Sheet	$22,339,000	$24,316,000
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	35,668,000	50,247,000
Offsetting Of Financial Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Assets, Gross Amounts Recognized	22,339,000	24,316,000
Derivative Financial Assets, Gross Amounts Offset	0	0
Derivative Financial Assets, Net Amounts Presented In The Consolidated Balance Sheet	22,339,000	24,316,000
Derivative Financial Assets, Financial Instruments	0	0
Derivative Financial Assets, Cash Collateral	-1,590,000	-3,940,000
Derivative Financial Assets, Net Amount	20,749,000	20,376,000
Offsetting Of Financial Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Liabilities, Gross Amounts Recognized	35,668,000	50,247,000
Derivative Financial Liabilities, Gross Amounts Offset	0	0
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	35,668,000	50,247,000
Derivative Financial Liabilities, Financial Instruments	0	0
Derivative Financial Liabilities, Cash Collateral	-28,858,000	-35,385,000
Derivative Financial Liabilities, Net Amount	6,810,000	14,862,000
Repurchase Agreements, Gross Amounts Recognized	281,085,000	295,800,000
Repurchase Agreements, Gross Amounts Offset	0	0
Repurchase Agreements, Net Amounts Presented In The Consolidated Balance Sheet	281,085,000	295,800,000
Repurchase Agreements, Financial Instruments	-281,085,000	-295,800,000
Repurchase Agreements, Cash Collateral	0	0
Repurchase Agreements, Net Amount	0	0
Financial Liabilities, Gross Amounts Recognized	316,753,000	346,047,000
Financial Liabilities, Gross Amounts Offset	0	0
Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	316,753,000	346,047,000
Financial Liabilities, Financial Instruments	-281,085,000	-295,800,000
Financial Liabilities, Cash Collateral	-28,858,000	-35,385,000
Financial Liabilities, Net Amount	$6,810,000	$14,862,000

Balance_Sheet_Offsetting_Deriv

Balance Sheet Offsetting (Derivative Assets And Derivative Liabilities) (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Derivative [Line Items]	'	'
Derivative Financial Assets, Net Amounts Presented In The Consolidated Balance Sheet	$22,339,000	$24,316,000
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	35,668,000	50,247,000
Offsetting Of Financial Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Assets, Net Amounts Presented In The Consolidated Balance Sheet	22,339,000	24,316,000
Derivative Financial Assets, Financial Instruments	0	0
Derivative Financial Assets, Cash Collateral	-1,590,000	-3,940,000
Derivative Financial Assets, Net Amount	20,749,000	20,376,000
Offsetting Of Financial Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	35,668,000	50,247,000
Derivative Financial Liabilities, Financial Instruments	0	0
Derivative Financial Liabilities, Cash Collateral	-28,858,000	-35,385,000
Derivative Financial Liabilities, Net Amount	6,810,000	14,862,000
Clearing Member A [Member] | Offsetting Of Financial Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Assets, Net Amounts Presented In The Consolidated Balance Sheet	0	19,000
Derivative Financial Assets, Financial Instruments	0	0
Derivative Financial Assets, Cash Collateral	0	0
Derivative Financial Assets, Net Amount	0	19,000
Clearing Member A [Member] | Offsetting Of Financial Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	6,485,000	1,077,000
Derivative Financial Liabilities, Financial Instruments	0	0
Derivative Financial Liabilities, Cash Collateral	-6,485,000	-1,077,000
Derivative Financial Liabilities, Net Amount	0	0
Cleared Agreements [Member] | Offsetting Of Financial Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Assets, Net Amounts Presented In The Consolidated Balance Sheet	0	19,000
Derivative Financial Assets, Financial Instruments	0	0
Derivative Financial Assets, Cash Collateral	0	0
Derivative Financial Assets, Net Amount	0	19,000
Cleared Agreements [Member] | Offsetting Of Financial Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	6,485,000	1,077,000
Derivative Financial Liabilities, Financial Instruments	0	0
Derivative Financial Liabilities, Cash Collateral	-6,485,000	-1,077,000
Derivative Financial Liabilities, Net Amount	0	0
Dealer A [Member] | Offsetting Of Financial Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Assets, Net Amounts Presented In The Consolidated Balance Sheet	1,054,000	2,836,000
Derivative Financial Assets, Financial Instruments	0	0
Derivative Financial Assets, Cash Collateral	0	0
Derivative Financial Assets, Net Amount	1,054,000	2,836,000
Dealer A [Member] | Offsetting Of Financial Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	3,470,000	3,840,000
Derivative Financial Liabilities, Financial Instruments	0	0
Derivative Financial Liabilities, Cash Collateral	-2,560,000	-1,290,000
Derivative Financial Liabilities, Net Amount	910,000	2,550,000
Dealer B [Member] | Offsetting Of Financial Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Assets, Net Amounts Presented In The Consolidated Balance Sheet	1,145,000	2,412,000
Derivative Financial Assets, Financial Instruments	0	0
Derivative Financial Assets, Cash Collateral	0	0
Derivative Financial Assets, Net Amount	1,145,000	2,412,000
Dealer B [Member] | Offsetting Of Financial Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	2,039,000	3,306,000
Derivative Financial Liabilities, Financial Instruments	0	0
Derivative Financial Liabilities, Cash Collateral	-1,310,000	-1,400,000
Derivative Financial Liabilities, Net Amount	729,000	1,906,000
Dealer C [Member] | Offsetting Of Financial Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Assets, Net Amounts Presented In The Consolidated Balance Sheet	129,000	359,000
Derivative Financial Assets, Financial Instruments	0	0
Derivative Financial Assets, Cash Collateral	0	0
Derivative Financial Assets, Net Amount	129,000	359,000
Dealer C [Member] | Offsetting Of Financial Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	1,002,000	684,000
Derivative Financial Liabilities, Financial Instruments	0	0
Derivative Financial Liabilities, Cash Collateral	-850,000	-550,000
Derivative Financial Liabilities, Net Amount	152,000	134,000
Dealer D [Member] | Offsetting Of Financial Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Assets, Net Amounts Presented In The Consolidated Balance Sheet	2,722,000	5,571,000
Derivative Financial Assets, Financial Instruments	0	0
Derivative Financial Assets, Cash Collateral	-1,590,000	-3,940,000
Derivative Financial Assets, Net Amount	1,132,000	1,631,000
Dealer D [Member] | Offsetting Of Financial Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	953,000	688,000
Derivative Financial Liabilities, Financial Instruments	0	0
Derivative Financial Liabilities, Cash Collateral	0	0
Derivative Financial Liabilities, Net Amount	953,000	688,000
Dealer E [Member] | Offsetting Of Financial Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Assets, Net Amounts Presented In The Consolidated Balance Sheet	0	0
Derivative Financial Assets, Financial Instruments	0	0
Derivative Financial Assets, Cash Collateral	0	0
Derivative Financial Assets, Net Amount	0	0
Dealer E [Member] | Offsetting Of Financial Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	12,642,000	21,251,000
Derivative Financial Liabilities, Financial Instruments	0	0
Derivative Financial Liabilities, Cash Collateral	-12,642,000	-21,251,000
Derivative Financial Liabilities, Net Amount	0	0
Dealer F [Member] | Offsetting Of Financial Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Assets, Net Amounts Presented In The Consolidated Balance Sheet	0	0
Derivative Financial Assets, Financial Instruments	0	0
Derivative Financial Assets, Cash Collateral	0	0
Derivative Financial Assets, Net Amount	0	0
Dealer F [Member] | Offsetting Of Financial Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	2,049,000	5,081,000
Derivative Financial Liabilities, Financial Instruments	0	0
Derivative Financial Liabilities, Cash Collateral	-2,049,000	-5,081,000
Derivative Financial Liabilities, Net Amount	0	0
Dealer G [Member] | Offsetting Of Financial Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Assets, Net Amounts Presented In The Consolidated Balance Sheet	0	0
Derivative Financial Assets, Financial Instruments	0	0
Derivative Financial Assets, Cash Collateral	0	0
Derivative Financial Assets, Net Amount	0	0
Dealer G [Member] | Offsetting Of Financial Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	2,014,000	3,966,000
Derivative Financial Liabilities, Financial Instruments	0	0
Derivative Financial Liabilities, Cash Collateral	-2,014,000	-3,966,000
Derivative Financial Liabilities, Net Amount	0	0
Dealer H [Member] | Offsetting Of Financial Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Assets, Net Amounts Presented In The Consolidated Balance Sheet	0	0
Derivative Financial Assets, Financial Instruments	0	0
Derivative Financial Assets, Cash Collateral	0	0
Derivative Financial Assets, Net Amount	0	0
Dealer H [Member] | Offsetting Of Financial Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	668,000	770,000
Derivative Financial Liabilities, Financial Instruments	0	0
Derivative Financial Liabilities, Cash Collateral	-668,000	-770,000
Derivative Financial Liabilities, Net Amount	0	0
Dealer I [Member] | Offsetting Of Financial Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Assets, Net Amounts Presented In The Consolidated Balance Sheet	0	0
Derivative Financial Assets, Financial Instruments	0	0
Derivative Financial Assets, Cash Collateral	0	0
Derivative Financial Assets, Net Amount	0	0
Dealer I [Member] | Offsetting Of Financial Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	394,000	121,000
Derivative Financial Liabilities, Financial Instruments	0	0
Derivative Financial Liabilities, Cash Collateral	-280,000	0
Derivative Financial Liabilities, Net Amount	114,000	121,000
Dealer J [Member] | Offsetting Of Financial Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Assets, Net Amounts Presented In The Consolidated Balance Sheet	0	0
Derivative Financial Assets, Financial Instruments	0	0
Derivative Financial Assets, Cash Collateral	0	0
Derivative Financial Assets, Net Amount	0	0
Dealer J [Member] | Offsetting Of Financial Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	13,000	18,000
Derivative Financial Liabilities, Financial Instruments	0	0
Derivative Financial Liabilities, Cash Collateral	0	0
Derivative Financial Liabilities, Net Amount	13,000	18,000
End User [Member] | Offsetting Of Financial Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Assets, Net Amounts Presented In The Consolidated Balance Sheet	17,289,000	13,119,000
Derivative Financial Assets, Financial Instruments	0	0
Derivative Financial Assets, Cash Collateral	0	0
Derivative Financial Assets, Net Amount	17,289,000	13,119,000
End User [Member] | Offsetting Of Financial Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	3,939,000	9,445,000
Derivative Financial Liabilities, Financial Instruments	0	0
Derivative Financial Liabilities, Cash Collateral	0	0
Derivative Financial Liabilities, Net Amount	3,939,000	9,445,000
Bilateral Agreements Counterparty [Member] | Offsetting Of Financial Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Assets, Net Amounts Presented In The Consolidated Balance Sheet	22,339,000	24,297,000
Derivative Financial Assets, Financial Instruments	0	0
Derivative Financial Assets, Cash Collateral	-1,590,000	-3,940,000
Derivative Financial Assets, Net Amount	20,749,000	20,357,000
Bilateral Agreements Counterparty [Member] | Offsetting Of Financial Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	29,183,000	49,170,000
Derivative Financial Liabilities, Financial Instruments	0	0
Derivative Financial Liabilities, Cash Collateral	-22,373,000	-34,308,000
Derivative Financial Liabilities, Net Amount	6,810,000	14,862,000
Counterparty [Member] | Offsetting Of Financial Assets [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Assets, Net Amounts Presented In The Consolidated Balance Sheet	22,339,000	24,316,000
Derivative Financial Assets, Financial Instruments	0	0
Derivative Financial Assets, Cash Collateral	-1,590,000	-3,940,000
Derivative Financial Assets, Net Amount	20,749,000	20,376,000
Counterparty [Member] | Offsetting Of Financial Liabilities [Member]	'	'
Derivative [Line Items]	'	'
Derivative Financial Liabilities, Net Amounts Presented In The Consolidated Balance Sheet	35,668,000	50,247,000
Derivative Financial Liabilities, Financial Instruments	0	0
Derivative Financial Liabilities, Cash Collateral	-28,858,000	-35,385,000
Derivative Financial Liabilities, Net Amount	$6,810,000	$14,862,000

Fair_Value_Disclosures_Assets_

Fair Value Disclosures (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Detail) (USD $)	Sep. 30, 2014		Dec. 31, 2013
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	$2,192,615,000		$2,375,224,000
Derivatives, Assets	22,339,000		24,316,000
Derivatives, Liabilities	35,668,000		50,247,000
Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Total Assets	2,214,954,000		2,399,540,000
Total Liabilities	35,668,000		50,247,000
Designated As Hedging Instrument [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Derivatives, Assets	725,000	[1]	1,419,000	[1]
Derivatives, Liabilities	17,506,000	[2]	31,662,000	[2]
Not Designated As Hedging Instruments [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Derivatives, Assets	21,614,000	[1]	22,897,000	[1]
Derivatives, Liabilities	18,162,000	[2]	18,585,000	[2]
U.S. Government Agencies [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	93,716,000		110,148,000
U.S. Government Agencies [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	93,716,000		110,148,000
Obligations Of States And Political Subdivisions [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	396,343,000		398,510,000
Obligations Of States And Political Subdivisions [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	396,343,000		398,510,000
Agency Residential Mortgage-Backed Securities [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	1,635,299,000		1,778,192,000
Agency Residential Mortgage-Backed Securities [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	1,635,299,000		1,778,192,000
Non-Agency Residential Mortgage-Backed Securities [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	304,000		565,000
Non-Agency Residential Mortgage-Backed Securities [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	304,000		565,000
Commercial Mortgage Backed Securities [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	5,837,000		8,734,000
Commercial Mortgage Backed Securities [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	5,837,000		8,734,000
Other Structured Financial Products [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	11,761,000		11,297,000
Other Structured Financial Products [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	11,761,000		11,297,000
Other Debt Securities [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	24,921,000		44,086,000
Other Debt Securities [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	24,921,000		44,086,000
Other Equity Securities [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	24,434,000		23,692,000
Other Equity Securities [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	24,434,000		23,692,000
Quoted Prices In Active Markets For Identical Instruments (Level 1) [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	21,665,000		20,895,000
Derivatives, Assets	0		0
Derivatives, Liabilities	0		0
Quoted Prices In Active Markets For Identical Instruments (Level 1) [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Total Assets	21,665,000		20,895,000
Total Liabilities	0		0
Quoted Prices In Active Markets For Identical Instruments (Level 1) [Member] | Designated As Hedging Instrument [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Derivatives, Assets	0	[1]	0	[1]
Derivatives, Liabilities	0	[2]	0	[2]
Quoted Prices In Active Markets For Identical Instruments (Level 1) [Member] | Not Designated As Hedging Instruments [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Derivatives, Assets	0	[1]	0	[1]
Derivatives, Liabilities	0	[2]	0	[2]
Quoted Prices In Active Markets For Identical Instruments (Level 1) [Member] | U.S. Government Agencies [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	0		0
Quoted Prices In Active Markets For Identical Instruments (Level 1) [Member] | Obligations Of States And Political Subdivisions [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	0		0
Quoted Prices In Active Markets For Identical Instruments (Level 1) [Member] | Agency Residential Mortgage-Backed Securities [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	0		0
Quoted Prices In Active Markets For Identical Instruments (Level 1) [Member] | Non-Agency Residential Mortgage-Backed Securities [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	0		0
Quoted Prices In Active Markets For Identical Instruments (Level 1) [Member] | Commercial Mortgage Backed Securities [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	0		0
Quoted Prices In Active Markets For Identical Instruments (Level 1) [Member] | Other Structured Financial Products [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	0		0
Quoted Prices In Active Markets For Identical Instruments (Level 1) [Member] | Other Debt Securities [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	0		0
Quoted Prices In Active Markets For Identical Instruments (Level 1) [Member] | Other Equity Securities [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	21,665,000		20,895,000
Significant Other Observable Inputs (Level 2) [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	2,156,420,000		2,340,235,000
Derivatives, Assets	22,339,000		24,316,000
Derivatives, Liabilities	35,668,000		50,247,000
Significant Other Observable Inputs (Level 2) [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Total Assets	2,178,759,000		2,364,551,000
Total Liabilities	35,668,000		50,247,000
Significant Other Observable Inputs (Level 2) [Member] | Designated As Hedging Instrument [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Derivatives, Assets	725,000	[1]	1,419,000	[1]
Derivatives, Liabilities	17,506,000	[2]	31,662,000	[2]
Significant Other Observable Inputs (Level 2) [Member] | Not Designated As Hedging Instruments [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Derivatives, Assets	21,614,000	[1]	22,897,000	[1]
Derivatives, Liabilities	18,162,000	[2]	18,585,000	[2]
Significant Other Observable Inputs (Level 2) [Member] | U.S. Government Agencies [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	93,716,000		110,148,000
Significant Other Observable Inputs (Level 2) [Member] | Obligations Of States And Political Subdivisions [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	396,343,000		398,510,000
Significant Other Observable Inputs (Level 2) [Member] | Agency Residential Mortgage-Backed Securities [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	1,635,299,000		1,778,192,000
Significant Other Observable Inputs (Level 2) [Member] | Non-Agency Residential Mortgage-Backed Securities [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	304,000		565,000
Significant Other Observable Inputs (Level 2) [Member] | Commercial Mortgage Backed Securities [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	5,837,000		8,734,000
Significant Other Observable Inputs (Level 2) [Member] | Other Structured Financial Products [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	0		0
Significant Other Observable Inputs (Level 2) [Member] | Other Debt Securities [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	24,921,000		44,086,000
Significant Other Observable Inputs (Level 2) [Member] | Other Equity Securities [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	0		0
Significant Unobservable Inputs (Level 3) [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	14,530,000		14,094,000
Derivatives, Assets	0		0
Derivatives, Liabilities	0		0
Significant Unobservable Inputs (Level 3) [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Total Assets	14,530,000		14,094,000
Total Liabilities	0		0
Significant Unobservable Inputs (Level 3) [Member] | Designated As Hedging Instrument [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Derivatives, Assets	0	[1]	0	[1]
Derivatives, Liabilities	0	[2]	0	[2]
Significant Unobservable Inputs (Level 3) [Member] | Not Designated As Hedging Instruments [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Derivatives, Assets	0	[1]	0	[1]
Derivatives, Liabilities	0	[2]	0	[2]
Significant Unobservable Inputs (Level 3) [Member] | U.S. Government Agencies [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	0		0
Significant Unobservable Inputs (Level 3) [Member] | Obligations Of States And Political Subdivisions [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	0		0
Significant Unobservable Inputs (Level 3) [Member] | Agency Residential Mortgage-Backed Securities [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	0		0
Significant Unobservable Inputs (Level 3) [Member] | Non-Agency Residential Mortgage-Backed Securities [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	0		0
Significant Unobservable Inputs (Level 3) [Member] | Commercial Mortgage Backed Securities [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	0		0
Significant Unobservable Inputs (Level 3) [Member] | Other Structured Financial Products [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	11,761,000		11,297,000
Significant Unobservable Inputs (Level 3) [Member] | Other Debt Securities [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	0		0
Significant Unobservable Inputs (Level 3) [Member] | Other Equity Securities [Member] | Measured On Recurring Basis [Member]	'		'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'		'
Available-for-sale securities	$2,769,000		$2,797,000
[1]	Included in Other assets
[2]	Included in Other liabilities

Fair_Value_Disclosures_Assets_1

Fair Value Disclosures (Assets Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs) (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]	'	'	'	'
Beginning Balance	$14,798,000	$37,875,000	$14,094,000	$39,506,000
Included in earnings	0	0	0	-476,000
Realized other-than-tempoary impairment	0	26,000	0	156,000
Principal paydowns	-143,000	-1,826,000	-378,000	-5,143,000
Included in other comprehensive income	-125,000	1,212,000	814,000	3,244,000
Ending Balance	14,530,000	37,287,000	14,530,000	37,287,000
Other Equity Securities [Member]	'	'	'	'
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]	'	'	'	'
Beginning Balance	2,803,000	2,820,000	2,797,000	3,156,000
Included in earnings	0	0	0	-97,000
Realized other-than-tempoary impairment	0	0	0	0
Principal paydowns	0	0	0	0
Included in other comprehensive income	-34,000	1,000	-28,000	-238,000
Ending Balance	2,769,000	2,821,000	2,769,000	2,821,000
Other Structured Financial Products [Member]	'	'	'	'
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]	'	'	'	'
Beginning Balance	11,995,000	10,506,000	11,297,000	9,550,000
Included in earnings	0	0	0	0
Realized other-than-tempoary impairment	0	0	0	0
Principal paydowns	-143,000	-37,000	-378,000	-114,000
Included in other comprehensive income	-91,000	975,000	842,000	2,008,000
Ending Balance	11,761,000	11,444,000	11,761,000	11,444,000
Non-Agency Residential Mortgage-Backed Securities [Member]	'	'	'	'
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]	'	'	'	'
Beginning Balance	0	24,549,000	0	26,800,000
Included in earnings	0	0	0	-379,000
Realized other-than-tempoary impairment	0	26,000	0	156,000
Principal paydowns	0	-1,789,000	0	-5,029,000
Included in other comprehensive income	0	236,000	0	1,474,000
Ending Balance	$0	$23,022,000	$0	$23,022,000

Fair_Value_Disclosures_Assets_2

Fair Value Disclosures (Assets Measured at Fair Value on a Nonrecurring Basis) (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'	'
Impaired loans	$47,441,000	$54,216,000
Foreclosed assets	9,133,000	16,555,000
Total Impaired loans and Foreclosed assets	56,574,000	70,771,000
Quoted Prices In Active Markets For Identical Instruments (Level 1) [Member]	'	'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'	'
Impaired loans	0	0
Foreclosed assets	0	0
Total Impaired loans and Foreclosed assets	0	0
Significant Other Observable Inputs (Level 2) [Member]	'	'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'	'
Impaired loans	0	0
Foreclosed assets	0	0
Total Impaired loans and Foreclosed assets	0	0
Significant Unobservable Inputs (Level 3) [Member]	'	'
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]	'	'
Impaired loans	47,441,000	54,216,000
Foreclosed assets	9,133,000	16,555,000
Total Impaired loans and Foreclosed assets	$56,574,000	$70,771,000

Fair_Value_Disclosures_Quantit

Fair Value Disclosures (Quantitative Information about Level 3 Fair Value Measurements) (Detail) (USD $)	9 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Other Structured Financial Products [Member]	'		'
Fair Value Inputs Assets Quantitative Information [Line Items]	'		'
Fair Value	$11,761	[1]	$11,297	[1]
Valuation Technique(s)	'Discounted Cash Flow	[1]	'Discounted Cash Flow	[1]
Credit default rates, call options and deferrals, waterfall structure, and covenants.	'Varies by individual security, refer to Note 2	[1]	'Varies by individual security, refer to Note 2	[1]
Other Equity Securities [Member]	'		'
Fair Value Inputs Assets Quantitative Information [Line Items]	'		'
Fair Value	2,769		2,797
Valuation Technique(s)	'Discounted Cash Flow		'Discounted Cash Flow
Other Equity Securities [Member] | Minimum [Member]	'		'
Fair Value Inputs Assets Quantitative Information [Line Items]	'		'
Price to book multiple	0.2		0.2
Other Equity Securities [Member] | Maximum [Member]	'		'
Fair Value Inputs Assets Quantitative Information [Line Items]	'		'
Price to book multiple	1.2		1.5
Other Equity Securities [Member] | Weighted Average [Member]	'		'
Fair Value Inputs Assets Quantitative Information [Line Items]	'		'
Price to book multiple	0.8		0.8
Impaired Loans [Member]	'		'
Fair Value Inputs Assets Quantitative Information [Line Items]	'		'
Fair Value	47,441		54,216
Valuation Technique(s)	'Discounted Cash Flow		'Discounted Cash Flow
Impaired Loans [Member] | Minimum [Member]	'		'
Fair Value Inputs Assets Quantitative Information [Line Items]	'		'
Cash flows based upon current discount rates and terminal value	0.60%		0.80%
Impaired Loans [Member] | Maximum [Member]	'		'
Fair Value Inputs Assets Quantitative Information [Line Items]	'		'
Cash flows based upon current discount rates and terminal value	13.90%		8.00%
Impaired Loans [Member] | Weighted Average [Member]	'		'
Fair Value Inputs Assets Quantitative Information [Line Items]	'		'
Cash flows based upon current discount rates and terminal value	4.00%		3.90%
Foreclosed Assets [Member]	'		'
Fair Value Inputs Assets Quantitative Information [Line Items]	'		'
Fair Value	$9,133		$16,555
Valuation Technique(s)	'Discounted Cash Flow		'Discounted Cash Flow
Foreclosed Assets [Member] | Minimum [Member]	'		'
Fair Value Inputs Assets Quantitative Information [Line Items]	'		'
Third party appraisals less estimated selling costs	0.00%		0.00%
Foreclosed Assets [Member] | Maximum [Member]	'		'
Fair Value Inputs Assets Quantitative Information [Line Items]	'		'
Third party appraisals less estimated selling costs	100.00%		100.00%
Foreclosed Assets [Member] | Weighted Average [Member]	'		'
Fair Value Inputs Assets Quantitative Information [Line Items]	'		'
Third party appraisals less estimated selling costs	38.70%		29.60%
[1]	The significant unobservable inputs used in the fair value measurement of Susquehanna's other structured financial products are conditional repayment rate, loss severity, and conditional default rate. Significant increases (decreases) in any of those inputs in isolation would result in a significantly lower (higher) fair value measurement. Generally, a change in the assumption used for the probability of default is accompanied by a directionally similar change in the assumption used for the loss severity and directionally opposite change in the assumption used for repayment rate.

Fair_Value_Disclosures_Carryin

Fair Value Disclosures (Carrying Amounts and Estimated Fair Values) (Detail) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Cash and due from banks	$772,677,000	$305,357,000
Investment securities	2,192,615,000	2,375,224,000
Restricted investment in bank stocks	133,119,000	158,232,000
Loans and leases	13,361,516,000	13,503,392,000
Derivatives	22,339,000	24,316,000
Deposits	13,588,524,000	12,869,372,000
Derivatives	35,668,000	50,247,000
Quoted Prices In Active Markets For Identical Instruments (Level 1) [Member]	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Cash and due from banks	772,677,000	305,357,000
Short-term investments	0	0
Investment securities	21,665,000	20,895,000
Restricted investment in bank stocks	0	0
Loans and leases	0	0
Derivatives	0	0
Deposits	0	0
Short-term borrowings	0	0
FHLB borrowings	0	0
Long-term debt	0	0
Derivatives	0	0
Significant Other Observable Inputs (Level 2) [Member]	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Cash and due from banks	0	0
Short-term investments	79,662,000	83,227,000
Investment securities	2,156,420,000	2,340,235,000
Restricted investment in bank stocks	133,119,000	158,232,000
Loans and leases	0	0
Derivatives	22,339,000	24,316,000
Deposits	12,660,047,000	11,901,099,000
Short-term borrowings	532,675,000	555,740,000
FHLB borrowings	918,764,000	1,531,606,000
Long-term debt	354,524,000	461,247,000
Derivatives	35,668,000	50,247,000
Significant Unobservable Inputs (Level 3) [Member]	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Cash and due from banks	0	0
Short-term investments	0	0
Investment securities	14,530,000	14,094,000
Restricted investment in bank stocks	0	0
Loans and leases	13,422,747,000	13,463,676,000
Derivatives	0	0
Deposits	0	0
Short-term borrowings	0	0
FHLB borrowings	0	0
Long-term debt	0	0
Derivatives	0	0
Carrying Amount [Member]	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Cash and due from banks	772,677,000	305,357,000
Short-term investments	79,662,000	83,227,000
Investment securities	2,192,615,000	2,375,224,000
Restricted investment in bank stocks	133,119,000	158,232,000
Loans and leases	13,425,721,000	13,576,086,000
Derivatives	22,339,000	24,316,000
Deposits	13,588,524,000	12,869,372,000
Short-term borrowings	532,675,000	555,740,000
FHLB borrowings	915,362,000	1,531,282,000
Long-term debt	356,117,000	453,260,000
Derivatives	35,668,000	50,247,000
Fair Value [Member]	'	'
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]	'	'
Cash and due from banks	772,677,000	305,357,000
Short-term investments	79,662,000	83,227,000
Investment securities	2,192,615,000	2,375,224,000
Restricted investment in bank stocks	133,119,000	158,232,000
Loans and leases	13,422,747,000	13,463,676,000
Derivatives	22,339,000	24,316,000
Deposits	12,660,047,000	11,901,099,000
Short-term borrowings	532,675,000	555,740,000
FHLB borrowings	918,764,000	1,531,606,000
Long-term debt	354,524,000	461,247,000
Derivatives	$35,668,000	$50,247,000