Park National (PRK) 10-Q 27 Apr 15 2015 Q1 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 24, 2015
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Entity Registrant Name	PARK NATIONAL CORP /OH/
Entity Central Index Key	805676
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		15,370,884

Consolidated_Condensed_Balance

Consolidated Condensed Balance Sheets (Unaudited) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Assets:
Cash and due from banks	$108,528	$133,511
Money market instruments	471,957	104,188
Cash and cash equivalents	580,485	237,699
Investment securities:
Securities available-for-sale, at fair value (amortized cost of $1,251,451 and $1,299,980 at March 31, 2015 and December 31, 2014, respectively)	1,265,477	1,301,915
Securities held-to-maturity, at amortized cost (fair value of $136,418 and $143,490 at March 31, 2015 and December 31, 2014, respectively)	133,383	140,562
Other investment securities	58,311	58,311
Total investment securities	1,457,171	1,500,788
Loans	4,830,830	4,829,682
Allowance for loan losses	-55,408	-54,352
Net loans	4,775,422	4,775,330
Bank owned life insurance	168,585	171,928
Goodwill	72,334	72,334
Premises and equipment, net	57,189	55,479
Other real estate owned	26,337	22,605
Interest Receivable	17,979	17,677
Mortgage loan servicing rights	8,312	8,613
Other	140,185	138,746
Total assets	7,303,999	7,001,199
Liabilities and Shareholders' Equity:
Noninterest bearing	1,262,442	1,269,296
Interest bearing	4,253,405	3,858,704
Total deposits	5,515,847	5,128,000
Short-term borrowings	239,961	276,980
Long-term debt	733,555	786,602
Subordinated debentures and notes	45,000	45,000
Accrued interest payable	2,588	2,551
Other	59,617	65,525
Total liabilities	6,596,568	6,304,658
Shareholders' equity:
Preferred shares (200,000 shares authorized; 0 shares issued)	0	0
Common shares (No par value; 20,000,000 shares authorized; 16,150,876 shares issued at March 31, 2015 and 16,150,888 shares issued at December 31, 2014)	303,362	303,104
Retained earnings	489,040	484,484
Treasury shares (779,989 shares at March 31, 2015 and 758,489 at December 31, 2014)	-79,222	-77,439
Accumulated other comprehensive loss, net of taxes	-5,749	-13,608
Total shareholders' equity	707,431	696,541
Total liabilities and shareholders' equity	$7,303,999	$7,001,199

Consolidated_Condensed_Balance1

Consolidated Condensed Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]
Securities available-for-sale, amortized cost	$1,251,451	$1,299,980
Securities held-to-maturity, fair value	$136,418	$143,490
Preferred Stock, Shares Authorized	200,000	200,000
Preferred Stock, Shares Issued	0	0
Common stock no par value	$0	$0
Common stock shares authorized	20,000,000	20,000,000
Common stock shares issued	16,150,876	16,150,888
Treasury stock shares	779,989	758,489

Consolidated_Condensed_Stateme

Consolidated Condensed Statements Of Income (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Interest and dividend income:
Interest and fees on loans	$55,412	$54,753
Interest and dividends on:
Obligations of U.S. Government, its agencies and other securities	9,389	9,476
Obligations of states and political subdivisions		2
Other interest income	217	111
Total interest and dividend income	65,018	64,342
Interest on deposits:
Demand and savings deposits	486	393
Time deposits	2,622	2,278
Interest on borrowings:
Short-term borrowings	133	126
Long-term debt	6,242	7,065
Total interest expense	9,483	9,862
Net interest income	55,535	54,480
Provision for (recovery of) loan losses	1,632	-2,225
Net interest income after provision for loan losses	53,903	56,705
Other income:
Income from fiduciary activities	4,912	4,541
Service charges on deposit accounts	3,381	3,659
Other service income	2,301	1,918
Checkcard fee income	3,351	3,213
Bank owned life insurance income	1,878	1,262
ATM Fees	578	594
OREO valuation adjustments	-304	-416
Gain on sale of OREO, net	673	706
Gain (Loss) on Sales of Loans, Net	756	0
Other	1,347	1,171
Total other income	18,873	16,648
Other expense:
Salaries and employee benefits	26,667	25,060
Occupancy expense	2,579	2,832
Furniture and equipment expense	2,862	2,998
Data processing fees	1,267	1,114
Professional fees and services	4,694	6,283
Marketing	1,013	1,118
Insurance	1,461	1,447
Communication	1,331	1,343
Excise and Sales Taxes	1,047	975
Other Real Estate Owned Expense	467	1,277
Other expense	2,332	1,332
Total other expense	45,720	45,779
Income before income taxes	27,056	27,574
Income taxes	8,012	7,997
Net income	19,044	19,577
Net income available to common shareholders	$19,044	$19,577
Net income available to common shareholders
Basic	$1.24	$1.27
Diluted	$1.23	$1.27
Weighted average common shares outstanding
Basic	15,379,170	15,401,105
Diluted	15,421,928	15,414,897
Cash dividends declared	$0.94	$0.94

Consolidated_Condensed_Stateme1

Consolidated Condensed Statements of Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Net Income	$19,044	$19,577
Other comprehensive income, net of tax:
Unrealized net holding gain on securities available-for-sale, net of income taxes	7,859	10,941
Other comprehensive income (loss)	7,859	10,941
Comprehensive income	$26,903	$30,518

Consolidated_Condensed_Stateme2

Consolidated Condensed Statements of Comprehensive Income (Parenthetical) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Unrealized net holding gain on securities available-for-sale, Tax expense (benefit)	$4,232	$5,891

Consolidated_Condensed_Stateme3

Consolidated Condensed Statements Of Changes In Stockholders' Equity (USD $)	Total	Preferred Stock [Member]	Common Stock [Member]	Retained Earnings [Member]	Treasury Stock At Cost [Member]	Accumulated Other Comprehensive Income (loss) [Member]
In Thousands, unless otherwise specified
Balance at Dec. 31, 2013		$0	$302,651	$460,643	($76,128)	($35,419)
Net Income	19,577			19,577
Other comprehensive income, net of tax:
Unrealized net holding gain on securities available-for-sale, net of income taxes	10,941					10,941
Cash dividends on common stock at $0.94 per share				-14,488
Cash payment for fractional shares in dividend reinvestment plan			-1
Allocated Share-based Compensation Expense	103		103
Treasury Stock, Value, Acquired, Cost Method					-1,485
Balance at Mar. 31, 2014		0	302,753	463,808	-77,613	-24,478
Balance at Dec. 31, 2014	696,541	0	303,104	486,541	-77,439	-13,608
Net Income	19,044			19,044
Other comprehensive income, net of tax:
Unrealized net holding gain on securities available-for-sale, net of income taxes	7,859					7,859
Cash dividends on common stock at $0.94 per share				-14,488
Cash payment for fractional shares in dividend reinvestment plan			-1
Allocated Share-based Compensation Expense	259		259
Treasury Stock, Value, Acquired, Cost Method					-1,783
Balance at Mar. 31, 2015	$707,431	$0	$303,362	$489,040	($79,222)	($5,749)

Consolidated_Condensed_Stateme4

Consolidated Condensed Statements Of Changes In Stockholders' Equity (Parenthetical) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Stockholders' Equity [Abstract]
Unrealized net holding gain on securities available-for-sale, tax	$4,232	$5,891
Cash dividends on common stock per share	$0.94	$0.94

Consolidated_Condensed_Stateme5

Consolidated Condensed Statements Of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Operating activities:
Net Income	$19,044	$19,577
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for (recovery of) loan losses	1,632	-2,225
(Accretion)/amortization of investment securities, net	1,565	1,135
Depreciation	1,691	1,821
(Accretion)/amortization of investment securities, net	-63	-49
Amortization of long-term debt prepayment penalty	1,497	1,222
Loan originations to be sold in secondary market	-40,270	-22,194
Proceeds from sale of loans in secondary market	38,254	20,802
Gain on sale of commercial loans held for sale	-756	0
Proceeds from commercial loans held for sale	900	0
Share-based compensation expense	259	103
Valuation adjustments	304	416
Gain on sale of OREO, net	-673	-706
Bank owned life insurance income	-1,878	-1,262
Changes in assets and liabilities:
Decrease in other assets	-8,403	-2,665
Increase (decrease) in other liabilities	-3,320	-6,761
Net cash provided by operating activities	9,076	8,762
Investing activities:
Proceeds from sales of Federal Home Loan Bank stock	0	8,946
Proceeds from maturity of:
Available-for-sale securities	78,523	21,581
Held-to-maturity securities	7,179	10,125
Purchases of:
Available-for-sale securities	-29,931	-14,811
Payments to Acquire Other Investments	0	-1,350
Net loan originations, portfolio loans	-5,203	-2,455
Investments in qualified affordable housing projects	-2,591	-8,000
Proceeds from the sale of OREO	3,861	4,687
Life insurance death benefits	5,221	744
Purchases of premises and equipment, net	-3,401	-2,123
Net cash used in investing activities	53,658	17,344
Financing activities:
Net increase in deposits	387,847	186,704
Net (decrease) increase in short-term borrowings	-37,019	9,865
Proceeds from issuance of long-term debt	25,000	25,000
Repurchase of treasury shares	-1,783	-1,485
Repayment of long-term debt	-79,544	-50,013
Cash dividends paid on common shares	-14,449	-14,470
Net cash provided by financing activities	280,052	155,601
Increase in cash and cash equivalents	342,786	181,707
Cash and cash equivalents at beginning of year	237,699	147,030
Cash and cash equivalents at end of period	580,485	328,737
Supplemental disclosures of cash flow information:
Cash paid for interest	9,446	9,858
Cash paid for income taxes	0	0
Non cash activities:
Loans transferred to Other Real Estate Owned	7,270	4,802
Transfer of Portfolio Loans and Leases to Held-for-sale	132	0
Mortgage Loans on Real Estate [Member]
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on sale of loans in secondary market	$707	$452

Basis_Of_Presentation

Basis Of Presentation	3 Months Ended
	Mar. 31, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis Of Presentation	Basis of Presentation
	The accompanying unaudited consolidated condensed financial statements included in this report have been prepared for Park National Corporation (sometimes also referred to as the “Registrant”) and its subsidiaries. Unless the context otherwise requires, references to "Park", the "Corporation" or the "Company" and similar terms mean Park National Corporation and its subsidiaries. In the opinion of management, all adjustments (consisting of normal recurring accruals) necessary for a fair presentation of the results of operations for the interim periods included herein have been made. The results of operations for the three-month period ended March 31, 2015 are not necessarily indicative of the operating results to be anticipated for the fiscal year ending December 31, 2015.
	The accompanying unaudited consolidated condensed financial statements have been prepared in accordance with the instructions for Form 10-Q and, therefore, do not include all information and footnotes necessary for a fair presentation of the condensed balance sheets, condensed statements of income, condensed statements of comprehensive income, condensed statements of changes in shareholders’ equity and condensed statements of cash flows in conformity with U.S. generally accepted accounting principles (“U.S. GAAP”). These financial statements should be read in conjunction with the consolidated financial statements incorporated by reference in the Annual Report on Form 10-K of Park for the fiscal year ended December 31, 2014 from Park’s 2014 Annual Report to Shareholders (“2014 Annual Report”). Prior period financial statements reflect the retrospective application of Accounting Standards Update (ASU) 2014-01, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects.
	Park’s significant accounting policies are described in Note 1 of the Notes to Consolidated Financial Statements included in Park’s 2014 Annual Report. For interim reporting purposes, Park follows the same basic accounting policies, as updated by the information contained in this report, and considers each interim period an integral part of an annual period.

Recent_Accounting_Pronouncemen

Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 2015
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Pronouncements	Recent Accounting Pronouncements
	ASU 2014-01- Investments—Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects (a consensus of the FASB Emerging Issues Task Force): In January 2014, the Financial Accounting Standards Board (the "FASB") issued Accounting Standards Update 2014-01, Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Qualified Affordable Housing Projects (a consensus of the FASB Emerging Issues Task Force). The ASU permits reporting entities to make an accounting policy election to account for their investments in qualified affordable housing projects using the proportional amortization method if certain conditions are met. Under the proportional amortization method, an entity amortizes the initial cost of the investment in proportion to the tax credits and other tax benefits received and recognizes the net investment performance in the income statement as a component of income tax expense. Additionally, a reporting entity should disclose information that enables users of its financial statement to understand the nature of its investments in qualified affordable housing projects, and the effect of the measurement of its investments in qualified affordable housing projects and the related tax credits on its financial position and results of operations. The new guidance became effective for annual periods, and interim reporting periods within those annual periods, beginning after December 15, 2014. Park adopted this guidance in the first quarter of 2015. The guidance was applied retrospectively to all prior periods presented. The adoption resulted in adjustments to reduce beginning retained earnings, other assets and the prior period consolidated condensed statements of income. See Note 16 - Investment in Qualified Affordable Housing for further details.
	ASU 2014-04 - Receivables—Troubled Debt Restructurings by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure (a consensus of the FASB Emerging Issues Task Force): In January 2014, FASB issued Accounting Standards Update 2014-04, Receivables—Troubled Debt Restructurings by Creditors (Subtopic 310-40): Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure (a consensus of the FASB Emerging Issues Task Force). The ASU clarifies when an in substance repossession or foreclosure occurs and a creditor is considered to have received physical possession of real estate property collateralizing a consumer mortgage loan. Specifically, the new ASU requires a creditor to reclassify a collateralized consumer mortgage loan to real estate property upon obtaining legal title to the real estate collateral, or the borrower voluntarily conveying all interest in the real estate property to the lender to satisfy the loan through a deed in lieu of foreclosure or similar legal agreement. Additional disclosures are required detailing the amount of foreclosed residential real estate property held by the creditor and the recorded investment in consumer mortgages collateralized by real estate property that are in the process of foreclosure. The new guidance is effective for annual periods, and interim reporting periods within those annual periods, beginning after December 15, 2014. The adoption of this guidance did not have a material impact on Park's consolidated financial statements, but resulted in additional disclosures. See Note 5 - Other Real Estate Owned.
	ASU 2014-09 - Revenue from Contracts with Customers (Topic 606): In May 2014, the FASB issued Accounting Standards Update 2014-09, Revenue from Contracts with Customers (Topic 606). The ASU creates a new topic, Topic 606, to provide guidance on revenue recognition for entities that enter into contracts with customers to transfer goods or services or enter into contracts for the transfer of nonfinancial assets. The core principle of the guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Additional disclosures are required to provide quantitative and qualitative information regarding the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The new guidance is effective for annual reporting periods, and interim reporting periods within those annual periods, beginning after December 15, 2016. Early adoption is not permitted. Management is currently evaluating the impact of the adoption of this guidance on Park's consolidated financial statements.
	ASU 2014-11 - Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures: In June 2014, the FASB issued Accounting Standards Update 2014-11, Transfers and Servicing (Topic 860): Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures. The amendments in this ASU change the accounting for repurchase-to-maturity transactions and linked repurchase financings to secured borrowing accounting, which is consistent with the accounting for other repurchase agreements. The amendments also require two new disclosures. The first disclosure requires an entity to disclose information on transfers accounted for as sales in transactions that are economically similar to repurchase agreements. The second disclosure provides increased transparency about the types of collateral pledged in repurchase agreements and similar transactions accounted for as secured borrowings. The accounting changes are effective for annual periods, and interim reporting periods within those annual periods, beginning after December 15, 2014. The disclosure for certain transactions accounted for as a sale is required to be presented for interim and annual periods beginning after December 15, 2014, with all other disclosure requirements required to be presented for annual periods beginning after December 15, 2014, and for interim periods beginning after March 15, 2015. The adoption of this guidance did not have an impact on Park's consolidated financial statements, but resulted in additional disclosures. See Note 17 - Repurchase Agreement Borrowings.
	ASU 2015-02 - Consolidation (Topic 810): Amendments to the Consolidation Analysis: In February 2015, the FASB issued Accounting Standards Update 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis. The ASU amends the current consolidation guidance and affects both the variable interest entity and voting interest entity consolidation models. The new guidance is effective for annual reporting periods and interim reporting periods within those annual periods, beginning after December 15, 2015. Early adoption is permitted. Management is currently evaluating the impact of the adoption of this guidance on Park’s consolidated financial statements.

Loans

Loans	3 Months Ended
	Mar. 31, 2015
Loans and Leases Receivable Disclosure [Abstract]
Loans	Loans
	The composition of the loan portfolio, by class of loan, as of March 31, 2015 and December 31, 2014 was as follows:
		March 31, 2015													December 31, 2014
	(In thousands)	Loan				Accrued				Recorded					Loan				Accrued			Recorded
		balance				interest				investment					balance				interest			investment
						receivable													receivable
	Commercial, financial and agricultural *	$	844,333			$	3,265			$	847,598				$	856,535			$	3,218		$	859,753
	Commercial real estate *	1,071,265				3,529				1,074,794					1,069,637				3,546			1,073,183
	Construction real estate:
	SEPH commercial land and development *	2,182				1				2,183					2,195				—			2,195
	Remaining commercial	109,820				293				110,113					115,139				300			115,439
	Mortgage	30,886				81				30,967					31,148				72			31,220
	Installment	6,887				26				6,913					7,322				23			7,345
	Residential real estate:
	Commercial	412,724				1,034				413,758					417,612				1,038			418,650
	Mortgage	1,197,202				1,665				1,198,867					1,189,709				1,548			1,191,257
	HELOC	213,594				820				214,414					216,915				803			217,718
	Installment	25,885				91				25,976					27,139				97			27,236
	Consumer	912,854				2,817				915,671					893,160				2,967			896,127
	Leases	3,198				44				3,242					3,171				17			3,188
	Total loans	$	4,830,830			$	13,666			$	4,844,496				$	4,829,682			$	13,629		$	4,843,311
	* Included within commercial, financial and agricultural loans, commercial real estate loans, and SEPH commercial land and development loans is an immaterial amount of consumer loans that are not broken out by class.
	Loans are shown net of deferred origination fees, costs and unearned income of $9.6 million at March 31, 2015 and $9.4 million at December 31, 2014, which represented a net deferred income position in both periods.
	Overdrawn deposit accounts of $3.2 million and $2.3 million have been reclassified to loans at March 31, 2015 and December 31, 2014, respectively.
	Credit Quality
	The following tables present the recorded investment in nonaccrual loans, accruing troubled debt restructurings, and loans past due 90 days or more and still accruing by class of loan as of March 31, 2015 and December 31, 2014:
			March 31, 2015
	(In thousands)		Nonaccrual				Accruing troubled debt restructurings				Loans past due				Total
			loans								90 days or more				nonperforming
											and accruing				loans
	Commercial, financial and agricultural		$	20,008			$	570			$	73			$	20,651
	Commercial real estate		14,232				2,668				—				16,900
	Construction real estate:
	SEPH commercial land and development		2,077				—				—				2,077
	Remaining commercial		5,671				54				—				5,725
	Mortgage		89				93				—				182
	Installment		111				121				—				232
	Residential real estate:
	Commercial		24,635				584				—				25,219
	Mortgage		21,323				10,631				719				32,673
	HELOC		1,822				780				—				2,602
	Installment		1,643				708				64				2,415
	Consumer		4,262				666				816				5,744
	Total loans		$	95,873			$	16,875			$	1,672			$	114,420
			December 31, 2014
	(In thousands)		Nonaccrual				Accruing troubled debt restructurings				Loans past due				Total
			loans								90 days or more				nonperforming
											and accruing				loans
	Commercial, financial and agricultural		$	18,826			$	297			$	229			$	19,352
	Commercial real estate		19,299				2,690				—				21,989
	Construction real estate:
	SEPH commercial land and development		2,078				—				—				2,078
	Remaining commercial		5,558				51				—				5,609
	Mortgage		59				94				9				162
	Installment		115				125				—				240
	Residential real estate:
	Commercial		24,336				594				—				24,930
	Mortgage		21,869				10,349				1,329				33,547
	HELOC		1,879				630				9				2,518
	Installment		1,743				779				—				2,522
	Consumer		4,631				723				1,133				6,487
	Total loans		$	100,393			$	16,332			$	2,709			$	119,434
	The following table provides additional information regarding those nonaccrual and accruing troubled debt restructured loans that were individually evaluated for impairment and those collectively evaluated for impairment as of March 31, 2015 and December 31, 2014.
			March 31, 2015													December 31, 2014
(In thousands)		Nonaccrual				Loans				Loans					Nonaccrual				Loans			Loans
		and accruing troubled debt				individually				collectively					and accruing troubled debt				individually			collectively
		restructurings				evaluated for				evaluated for					restructurings				evaluated for			evaluated for
						impairment				impairment									impairment			impairment
Commercial, financial and agricultural		$	20,578			$	20,571			$	7				$	19,123			$	19,106		$	17
Commercial real estate		16,900				16,900				—					21,989				21,989			—
Construction real estate:
SEPH commercial land and development		2,077				2,077				—					2,078				2,078			—
Remaining commercial		5,725				5,725				—					5,609				5,609			—
Mortgage		182				—				182					153				—			153
Installment		232				—				232					240				—			240
Residential real estate:
Commercial		25,219				25,219				—					24,930				24,930			—
Mortgage		31,954				—				31,954					32,218				—			32,218
HELOC		2,602				—				2,602					2,509				—			2,509
Installment		2,351				—				2,351					2,522				—			2,522
Consumer		4,928				—				4,928					5,354				—			5,354
Total loans		$	112,748			$	70,492			$	42,256				$	116,725			$	73,712		$	43,013
All of the loans individually evaluated for impairment were evaluated using the fair value of the underlying collateral or the present value of expected future cash flows as the measurement method.
The following table presents loans individually evaluated for impairment by class of loan as of March 31, 2015 and December 31, 2014.
		March 31, 2015													December 31, 2014
(In thousands)		Unpaid				Recorded				Allowance					Unpaid				Recorded			Allowance
		principal				investment				for loan					principal				investment			for loan
		balance								losses					balance							losses
										allocated												allocated
With no related allowance recorded:
Commercial, financial and agricultural		$	25,671			$	17,301			$	—				$	30,601			$	17,883		$	—
Commercial real estate		16,963				15,513				—					27,923				20,696			—
Construction real estate:
SEPH commercial land and development		10,861				2,077				—					11,026				2,078			—
Remaining commercial		1,432				444				—					1,427				391			—
Residential real estate:
Commercial		25,770				23,852				—					25,822				23,352			—
Consumer		—				—				—					—				—			—
With an allowance recorded:
Commercial, financial and agricultural		7,444				3,270				1,839					1,251				1,223			981
Commercial real estate		1,419				1,387				645					1,310				1,293			262
Construction real estate:
SEPH commercial land and development		—				—				—					—				—			—
Remaining commercial		5,281				5,281				2,157					5,218				5,218			1,812
Residential real estate:
Commercial		1,394				1,367				423					1,578				1,578			605
Consumer		—				—				—					—				—			—
Total		$	96,235			$	70,492			$	5,064				$	106,156			$	73,712		$	3,660
Management’s general practice is to proactively charge down loans individually evaluated for impairment to the fair value of the underlying collateral. At March 31, 2015 and December 31, 2014, there were $21.6 million and $32.4 million, respectively, of partial charge-offs on loans individually evaluated for impairment with no related allowance recorded and $4.2 million and $45,000, respectively, of partial charge-offs on loans individually evaluated for impairment that also had a specific reserve allocated.
The allowance for loan losses included specific reserves related to loans individually evaluated for impairment at March 31, 2015 and December 31, 2014 of $5.1 million and $3.7 million, respectively. These loans with specific reserves had a recorded investment of $11.3 million and $9.3 million as of March 31, 2015 and December 31, 2014, respectively.
Interest income on loans individually evaluated for impairment is recognized on a cash basis only when Park expects to receive the entire recorded investment of the loan. The following table presents the average recorded investment and interest income recognized subsequent to impairment on loans individually evaluated for impairment as of and for the three months ended March 31, 2015 and March 31, 2014:
	Three Months Ended													Three Months Ended
	31-Mar-15													31-Mar-14
(In thousands)	Recorded investment as of March 31, 2015				Average				Interest					Recorded investment as of March 31, 2014				Average			Interest
					recorded				income									recorded			income
					investment				recognized									investment			recognized
Commercial, financial and agricultural	$	20,571			$	19,876			$	131				$	19,835			$	20,140		$	61
Commercial real estate	16,900				18,977				163					39,395				40,995			253
Construction real estate:
SEPH commercial land and development	2,077				2,077				8					4,102				4,464			56
Remaining commercial	5,725				5,697				5					10,530				10,379			47
Residential real estate:
Commercial	25,219				25,373				255					31,213				31,101			263
Consumer	—				—				—					798				799			—
Total	$	70,492			$	72,000			$	562				$	105,873			$	107,878		$	680
The following tables present the aging of the recorded investment in past due loans as of March 31, 2015 and December 31, 2014 by class of loan.
	March 31, 2015
(In thousands)	Accruing loans				Past due				Total past due				Total current				Total recorded
	past due 30-89				nonaccrual												investment
	days				loans and loans past
					due 90 days or
					more and
					accruing*
Commercial, financial and agricultural	$	5,331			$	6,019			$	11,350			$	836,248			$	847,598
Commercial real estate	317				1,818				2,135				1,072,659				1,074,794
Construction real estate:
SEPH commercial land and development	—				2,069				2,069				114				2,183
Remaining commercial	163				75				238				109,875				110,113
Mortgage	108				68				176				30,791				30,967
Installment	116				6				122				6,791				6,913
Residential real estate:
Commercial	447				19,015				19,462				394,296				413,758
Mortgage	8,985				9,176				18,161				1,180,706				1,198,867
HELOC	490				132				622				213,792				214,414
Installment	202				454				656				25,320				25,976
Consumer	7,546				3,133				10,679				904,992				915,671
Leases	—				—				—				3,242				3,242
Total loans	$	23,705			$	41,965			$	65,670			$	4,778,826			$	4,844,496
* Includes $1.7 million of loans past due 90 days or more and accruing. The remaining are past due, nonaccrual loans and accruing troubled debt restructurings.
	December 31, 2014
(in thousands)	Accruing loans				Past due				Total past due				Total current				Total recorded
	past due 30-89				nonaccrual												investment
	days				loans and loans past
					due 90 days or
					more and
					accruing*
Commercial, financial and agricultural	$	6,482			$	7,508			$	13,990			$	845,763			$	859,753
Commercial real estate	808				8,288				9,096				1,064,087				1,073,183
Construction real estate:
SEPH commercial land and development	—				2,068				2,068				127				2,195
Remaining commercial	166				77				243				115,196				115,439
Mortgage	39				68				107				31,113				31,220
Installment	21				25				46				7,299				7,345
Residential real estate:
Commercial	250				19,592				19,842				398,808				418,650
Mortgage	11,146				10,637				21,783				1,169,474				1,191,257
HELOC	262				387				649				217,069				217,718
Installment	596				464				1,060				26,176				27,236
Consumer	11,304				3,818				15,122				881,005				896,127
Leases	—				—				—				3,188				3,188
Total loans	$	31,074			$	52,932			$	84,006			$	4,759,305			$	4,843,311
* Includes $2.7 million of loans past due 90 days or more and accruing. The remaining are past due, nonaccrual loans and accruing troubled debt restructurings.
Credit Quality Indicators
Management utilizes past due information as a credit quality indicator across the loan portfolio. Past due information as of March 31, 2015 and December 31, 2014 is included in the tables above. The past due information is the primary credit quality indicator within the following classes of loans: (1) mortgage loans and installment loans in the construction real estate segment; (2) mortgage loans, HELOC and installment loans in the residential real estate segment; and (3) consumer loans. The primary credit indicator for commercial loans is based on an internal grading system that grades all commercial loans on a scale from 1 to 8. Credit grades are continuously monitored by the responsible loan officer and adjustments are made when appropriate. A grade of 1 indicates little or no credit risk and a grade of 8 is considered a loss. Commercial loans that are pass-rated are considered to be of acceptable credit risk. Commercial loans graded a 5 (special mention) are considered to be watch list credits and a higher loan loss reserve percentage is allocated to these loans. Loans classified as special mention have potential weaknesses that require management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or of the institution’s credit position at some future date. Commercial loans graded 6 (substandard), also considered to be watch list credits, are considered to represent higher credit risk and, as a result, a higher loan loss reserve percentage is allocated to these loans. Loans classified as substandard are inadequately protected by the current sound worth and paying capacity of the obligor or the value of the collateral pledged, if any. Loans so classified have a well defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that Park will sustain some loss if the deficiencies are not corrected. Commercial loans that are graded a 7 (doubtful) are shown as nonaccrual and Park generally charges these loans down to their fair value by taking a partial charge-off or recording a specific reserve. Loans classified as doubtful have all the weaknesses inherent in those classified as substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. Certain 6-rated loans and all 7-rated loans are included within the impaired category. A loan is deemed impaired when management determines the borrower's ability to perform in accordance with the contractual loan agreement is in doubt. Any commercial loan graded an 8 (loss) is completely charged off.
The tables below present the recorded investment by loan grade at March 31, 2015 and December 31, 2014 for all commercial loans:
	March 31, 2015
(In thousands)	5 Rated				6 Rated				Impaired				Pass Rated				Recorded
																	Investment
Commercial, financial and agricultural *	$	3,017			$	595			$	20,578			$	823,408			$	847,598
Commercial real estate *	12,389				1,496				16,900				1,044,009				1,074,794
Construction real estate:
SEPH commercial land and development *	—				—				2,077				106				2,183
Remaining commercial	4,006				—				5,725				100,382				110,113
Residential real estate:
Commercial	2,185				436				25,219				385,918				413,758
Leases	—				—				—				3,242				3,242
Total commercial loans	$	21,597			$	2,527			$	70,499			$	2,357,065			$	2,451,688
* Included within commercial, financial and agricultural loans, commercial real estate loans, and SEPH commercial land and development loans is an immaterial amount of consumer loans that are not broken out by class.
	December 31, 2014
(In thousands)	5 Rated				6 Rated				Impaired				Pass Rated				Recorded
																	Investment
Commercial, financial and agricultural *	$	1,874			$	1,201			$	19,123			$	837,555			$	859,753
Commercial real estate *	8,448				1,712				21,989				1,041,034				1,073,183
Construction real estate:
SEPH commercial land and development *	—				—				2,078				117				2,195
Remaining commercial	3,349				57				5,609				106,424				115,439
Residential real estate:
Commercial	2,581				598				24,930				390,541				418,650
Leases	—				—				—				3,188				3,188
Total Commercial Loans	$	16,252			$	3,568			$	73,729			$	2,378,859			$	2,472,408
* Included within commercial, financial and agricultural loans, commercial real estate loans, and SEPH commercial land and development loans is an immaterial amount of consumer loans that are not broken out by class.
Troubled Debt Restructurings (TDRs)
Management classifies loans as TDRs when a borrower is experiencing financial difficulties and Park has granted a concession to the borrower as part of a modification or in the loan renewal process. In order to determine whether a borrower is experiencing financial difficulty, an evaluation is performed of the probability that the borrower will be in payment default on any of the borrower's debt in the foreseeable future without the modification. This evaluation is performed in accordance with the Company’s internal underwriting policy. Management’s policy is to modify loans by extending the term or by granting a temporary or permanent contractual interest rate below the market rate, not by forgiving debt. Certain loans which were modified during the three- month periods ended March 31, 2015 and March 31, 2014 did not meet the definition of a TDR as the modification was a delay in a payment that was considered to be insignificant. Management considers a forbearance period of up to three months or a delay in payment of up to 30 days to be insignificant. TDRs may be classified as accruing if the borrower has been current for a period of at least six months with respect to loan payments and management expects that the borrower will be able to continue to make payments in accordance with the terms of the restructured note. Management reviews all accruing TDRs quarterly to ensure payments continue to be made in accordance with the modified terms.
Management reviews renewals/modifications of loans previously identified as TDRs to consider if it is appropriate to remove the TDR classification. If the borrower is no longer experiencing financial difficulty and the renewal/modification does not contain a concessionary interest rate or other concessionary terms, management considers the potential removal of the TDR classification. If deemed appropriate, the TDR classification is removed as the borrower has complied with the terms of the loan at the date of the renewal/modification and there was a reasonable expectation that the borrower would continue to comply with the terms of the loan subsequent to the date of the renewal/modification. The majority of these TDRs were originally considered restructurings in a prior year as a result of a renewal/modification with an interest rate that was not commensurate with the risk of the underlying loan at the time of the renewal/modification. The TDR classification was not removed on any loans during the three months ended March 31, 2015. During the three months ended March 31, 2014, Park removed the TDR classification on $1.0 million of loans that met the requirements discussed above.
At March 31, 2015 and December 31, 2014, there were $42.6 million and $47.5 million, respectively, of TDRs included in the nonaccrual loan totals. At March 31, 2015 and December 31, 2014, $18.1 million and $15.7 million of these nonaccrual TDRs were performing in accordance with the terms of the restructured note. As of March 31, 2015 and December 31, 2014, there were $16.9 million and $16.3 million, respectively, of TDRs included in accruing loan totals. Management will continue to review the restructured loans and may determine it appropriate to move certain of the loans back to accrual status in the future.
At March 31, 2015 and December 31, 2014, Park had commitments to lend $2.2 million and $1.4 million, respectively, of additional funds to borrowers whose outstanding loan terms had been modified in a TDR.
The specific reserve related to TDRs at March 31, 2015 and December 31, 2014 was $3.5 million and $2.4 million, respectively. Modifications made in 2014 and 2015 were largely the result of renewals and extending the maturity date of the loan at terms consistent with the original note. These modifications were deemed to be TDRs primarily due to Park’s conclusion that the borrower would likely not have qualified for similar terms through another lender. Many of the modifications deemed to be TDRs were previously identified as impaired loans, and thus were also previously evaluated for impairment under ASC 310.  Additional specific reserves of $857,000 and $18,000 were recorded during the three-month periods ended March 31, 2015 and March 31, 2014, respectively, as a result of TDRs identified in the respective year.
The terms of certain other loans were modified during the three-month periods ended March 31, 2015 and March 31, 2014 that did not meet the definition of a TDR. Modified substandard commercial loans which did not meet the definition of a TDR had a total recorded investment as of March 31, 2015 and March 31, 2014 of $131,000 and $392,000, respectively. The renewal/modification of these loans: (1) involved a renewal/modification of the terms of a loan to a borrower who was not experiencing financial difficulties, (2) resulted in a delay in a payment that was considered to be insignificant, or (3) resulted in Park obtaining additional collateral or guarantees that improved the likelihood of the ultimate collection of the loan such that the modification was deemed to be at market terms.  Modified consumer loans which did not meet the definition of a TDR had a total recorded investment as of March 31, 2015 and March 31, 2014 of $4.5 million and $5.7 million, respectively. Many of these loans were to borrowers who were not experiencing financial difficulties but who were looking to reduce their cost of funds.
The following tables detail the number of contracts modified as TDRs during the three-month periods ended March 31, 2015 and March 31, 2014, as well as the recorded investment of these contracts at March 31, 2015 and March 31, 2014. The recorded investment pre- and post-modification is generally the same due to the fact that Park does not typically provide for forgiveness of principal.
	Three Months Ended
	31-Mar-15
(In thousands)	Number of			Accruing				Nonaccrual				Total
	Contracts											Recorded
												Investment
Commercial, financial and agricultural	13			$	398			$	597			$	995
Commercial real estate	6			—				1,314				1,314
Construction real estate:
SEPH commercial land and development	—			—				—				—
Remaining commercial	—			—				—				—
Mortgage	1			—				21				21
Installment	—			—				—				—
Residential real estate:
Commercial	3			—				513				513
Mortgage	7			328				206				534
HELOC	10			193				108				301
Installment	—			—				—				—
Consumer	66			29				463				492
Total loans	106			$	948			$	3,222			$	4,170
	Three Months Ended
	31-Mar-14
(In thousands)	Number of			Accruing				Nonaccrual				Total
	Contracts											Recorded
												Investment
Commercial, financial and agricultural	5			$	—			$	60			$	60
Commercial real estate	3			161				523				684
Construction real estate:
SEPH commercial land and development	—			—				—				—
Remaining commercial	—			—				—				—
Mortgage	—			—				—				—
Installment	—			—				—				—
Residential real estate:
Commercial	2			—				68				68
Mortgage	7			164				495				659
HELOC	—			—				—				—
Installment	4			36				36				72
Consumer	71			382				108				490
Total loans	92			$	743			$	1,290			$	2,033
Of those loans which were modified and determined to be a TDR during the three-month period ended March 31, 2015, $1.1 million were on nonaccrual status as of December 31, 2014. Of those loans which were modified and determined to be a TDR during the three-month period ended March 31, 2014, $900,000 were on nonaccrual status as of December 31, 2013.
The following tables present the recorded investment in financing receivables which were modified as TDRs within the previous 12 months and for which there was a payment default during the three-month periods ended March 31, 2015 and March 31, 2014, respectively. For these tables, a loan is considered to be in default when it becomes 30 days contractually past due under the modified terms. The additional allowance for loan loss resulting from the defaults on TDR loans was immaterial.
	Three Months Ended								Three Months Ended
	31-Mar-15								31-Mar-14
(In thousands)	Number of			Recorded					Number of			Recorded
	Contracts			Investment					Contracts			Investment
Commercial, financial and agricultural	3			$	70				7			$	89
Commercial real estate	—			—					5			872
Construction real estate:
SEPH commercial land and development	—			—					—			—
Remaining commercial	—			—					—			—
Mortgage	—			—					—			—
Installment	—			—					—			—
Residential real estate:
Commercial	—			—					2			302
Mortgage	13			689					19			1,144
HELOC	—			—					—			—
Installment	1			8					6			108
Consumer	47			349					49			345
Leases	—			—					—			—
Total loans	64			$	1,116				88			$	2,860
Of the $1.1 million in modified TDRs which defaulted during the three months ended March 31, 2015, there were no accruing loans. Of the $2.9 million in modified TDRs which defaulted during the three months ended March 31, 2014, $499,000 were accruing loans and $2.4 million were nonaccrual loans.

Allowance_For_Loan_Losses

Allowance For Loan Losses	3 Months Ended
	Mar. 31, 2015
Loans and Leases Receivable, Allowance [Abstract]
Allowance For Loan Losses	Allowance for Loan Losses
	The allowance for loan losses is that amount management believes is adequate to absorb probable incurred credit losses in the loan portfolio based on management’s evaluation of various factors including overall growth in the loan portfolio, an analysis of individual loans, prior and current loss experience, and current economic conditions. A provision for loan losses is charged to operations based on management’s periodic evaluation of these and other pertinent factors as discussed within Note 1 of the Notes to Consolidated Financial Statements included in Park’s 2014 Annual Report.
	Management updates historical losses annually in the fourth quarter, or more frequently as deemed appropriate. With the inclusion of 2013 net charge-off information, management concluded that it was no longer appropriate to calculate the historical loss average with an even allocation across the five-year period. Rather than apply a 20% allocation to each year in the calculation of the historical annualized loss factor, management determined that it was appropriate to more heavily weight those years with higher losses in the historical loss calculation, given the continued uncertainty in the current economic environment. Specifically, rather than applying equal percentages to each year in the historical loss calculation, management applied more weight to the 2009-2011 periods compared to the 2012 and 2013 periods.
	With the inclusion of 2014 net charge-off information in the fourth quarter of 2014, management extended the historical loss period to six years. Due to the same factors that management considered in 2013, management applied more weight to 2009 through 2011 periods compared to the 2012 through 2014 periods.
	The activity in the allowance for loan losses for the three months ended March 31, 2015 and March 31, 2014 is summarized below.
		Three Months Ended
		31-Mar-15
	(In thousands)	Commercial,				Commercial				Construction				Residential				Consumer				Leases				Total
		financial and				real estate				real estate				real estate
		agricultural
	Allowance for loan losses:
	Beginning balance	$	10,719			$	8,808			$	8,652			$	14,772			$	11,401			$	—			$	54,352
	Charge-offs	352				130				—				422				2,514				—				3,418
	Recoveries	291				674				285				924				666				2				2,842
	Net charge-offs/(recoveries)	61				(544		)		(285		)		(502		)		1,848				(2		)		576
	Provision/(recovery)	703				(56		)		(182		)		(762		)		1,931				(2		)		1,632
	Ending balance	$	11,361			$	9,296			$	8,755			$	14,512			$	11,484			$	—			$	55,408
		Three Months Ended
		31-Mar-14
	(In thousands)	Commercial,				Commercial				Construction				Residential				Consumer				Leases				Total
		financial and				real estate				real estate				real estate
		agricultural
	Allowance for loan losses:
	Beginning balance	$	14,218			$	15,899			$	6,855			$	14,251			$	8,245			$	—			$	59,468
	Charge-offs	639				794				8				591				1,795				—				3,827
	Recoveries	247				1,558				794				1,227				3,014				1				6,841
	Net charge-offs/(recoveries)	392				(764		)		(786		)		(636		)		(1,219		)		(1		)		(3,014		)
	Provision/(recovery)	(64		)		(909		)		480				(680		)		(1,051		)		(1		)		(2,225		)
	Ending balance	$	13,762			$	15,754			$	8,121			$	14,207			$	8,413			$	—			$	60,257
	Loans collectively evaluated for impairment in the following tables include all performing loans at March 31, 2015 and December 31, 2014, as well as nonperforming loans internally classified as consumer loans. Nonperforming consumer loans are not typically individually evaluated for impairment, but receive a portion of the statistical allocation of the allowance for loan losses. Loans individually evaluated for impairment include all impaired loans internally classified as commercial loans at March 31, 2015 and December 31, 2014, which are evaluated for impairment in accordance with U.S. GAAP (see Note 1 of the Notes to Consolidated Financial Statements included in Park’s 2014 Annual Report).
	The composition of the allowance for loan losses at March 31, 2015 and December 31, 2014 was as follows:
		March 31, 2015
	(In thousands)	Commercial,				Commercial				Construction				Residential				Consumer				Leases				Total
		financial and				real estate				real estate				real estate
		agricultural
	Allowance for loan losses:
	Ending allowance balance attributed to loans:
	Individually evaluated for impairment	$	1,839			$	645			$	2,157			$	423			$	—			$	—			$	5,064
	Collectively evaluated for impairment	9,522				8,651				6,598				14,089				11,484				—				50,344
	Total ending allowance balance	$	11,361			$	9,296			$	8,755			$	14,512			$	11,484			$	—			$	55,408
	Loan balance:
	Loans individually evaluated for impairment	$	20,570			$	16,892			$	7,802			$	25,197			$	—			$	—			$	70,461
	Loans collectively evaluated for impairment	823,763				1,054,373				141,973				1,824,208				912,854				3,198				4,760,369
	Total ending loan balance	$	844,333			$	1,071,265			$	149,775			$	1,849,405			$	912,854			$	3,198			$	4,830,830
	Allowance for loan losses as a percentage of loan balance:
	Loans individually evaluated for impairment	8.94		%		3.82		%		27.65		%		1.68		%		—		%		—		%		7.19		%
	Loans collectively evaluated for impairment	1.16		%		0.82		%		4.65		%		0.77		%		1.26		%		—		%		1.06		%
	Total	1.35		%		0.87		%		5.85		%		0.78		%		1.26		%		—		%		1.15		%
	Recorded investment:
	Loans individually evaluated for impairment	$	20,571			$	16,900			$	7,802			$	25,219			$	—			$	—			$	70,492
	Loans collectively evaluated for impairment	827,027				1,057,894				142,374				1,827,796				915,671				3,242				4,774,004
	Total ending recorded investment	$	847,598			$	1,074,794			$	150,176			$	1,853,015			$	915,671			$	3,242			$	4,844,496
			December 31, 2014
	(In thousands)		Commercial,				Commercial				Construction				Residential				Consumer				Leases				Total
			financial and				real estate				real estate				real estate
			agricultural
	Allowance for loan losses:
	Ending allowance balance attributed to loans:
	Individually evaluated for impairment		$	981			$	262			$	1,812			$	605			$	—			$	—			$	3,660
	Collectively evaluated for impairment		9,738				8,546				6,840				14,167				11,401				—				50,692
	Total ending allowance balance		$	10,719			$	8,808			$	8,652			$	14,772			$	11,401			$	—			$	54,352
	Loan balance:
	Loans individually evaluated for impairment		$	19,103			$	21,978			$	7,690			$	24,905			$	—			$	—			$	73,676
	Loans collectively evaluated for impairment		837,432				1,047,659				148,114				1,826,470				893,160				3,171				4,756,006
Total ending loan balance		$	856,535			$	1,069,637			$	155,804			$	1,851,375			$	893,160			$	3,171			$	4,829,682
Allowance for loan losses as a percentage of loan balance:
Loans individually evaluated for impairment		5.14		%		1.19		%		23.56		%		2.43		%		—		%		—		%		4.97		%
Loans collectively evaluated for impairment		1.16		%		0.82		%		4.62		%		0.78		%		1.28		%		—		%		1.07		%
Total		1.25		%		0.82		%		5.55		%		0.8		%		1.28		%		—		%		1.13		%
Recorded investment:
Loans individually evaluated for impairment		$	19,106			$	21,989			$	7,687			$	24,930			$	—			$	—			$	73,712
Loans collectively evaluated for impairment		840,647				1,051,194				148,512				1,829,931				896,127				3,188				4,769,599
Total ending recorded investment		$	859,753			$	1,073,183			$	156,199			$	1,854,861			$	896,127			$	3,188			$	4,843,311

Other_Real_Estate_Owned_Notes

Other Real Estate Owned (Notes)	3 Months Ended
	Mar. 31, 2015
Other Real Estate Owned [Abstract]
Real Estate Owned [Text Block]	Management transfers a loan to OREO at the time that Park takes deed/title of the asset. The carrying amount of foreclosed properties held at March 31, 2015 and December 31, 2014 are listed below, as well as the recorded investment of loans secured by residential real estate properties for which formal foreclosure proceedings are in process.
	(in thousands)	31-Mar-15		31-Dec-14
	OREO:
	Commercial real estate	$	10,611	$	6,352
	Construction real estate	11,078		11,281
	Residential real estate	4,648		4,972
	Total OREO	$	26,337	$	22,605
	Loans in process of foreclosure:
	Residential real estate	$	3,464	$	2,807

Earnings_Per_Common_Share

Earnings Per Common Share	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Earnings Per Common Share	Earnings Per Common Share
	The following table sets forth the computation of basic and diluted earnings per common share for the three months ended March 31, 2015 and 2014.
		Three Months Ended
		March 31,
	(In thousands, except share and per share data)	2015		2014
	Numerator:
	Net income available to common shareholders	$	19,044	$	19,577
	Denominator:
	Denominator for basic earnings per share (weighted average common shares outstanding)	15,379,170		15,401,105
	Effect of dilutive performance-based restricted stock units	42,758		13,792
	Denominator for diluted earnings per share (weighted average common shares outstanding adjusted for the effect of dilutive performance-based restricted stock units)	15,421,928		15,414,897
	Earnings per common share:
	Basic earnings per common share	$	1.24	$	1.27
	Diluted earnings per common share	$	1.23	$	1.27
	Park awarded 23,025 and 21,975 performance-based restricted stock units ("PBRSUs") to certain employees during the three months ended March 31, 2015 and 2014, respectively. The PBRSUs vest based on service and performance conditions. The dilutive effect of the PBRSUs was the addition of 42,758 and 13,792 common shares for the three months ended March 31, 2015 and 2014, respectively.
	During the three months ended March 31, 2015 and 2014, Park repurchased 21,500 and 19,500 common shares, respectively, to fund the PBRSUs.

Segment_Information

Segment Information	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Segment Information	Segment Information
	The Corporation is a financial holding company headquartered in Newark, Ohio. The operating segments for the Corporation are its chartered national bank subsidiary, The Park National Bank (headquartered in Newark, Ohio) (“PNB”), SE Property Holdings, LLC (“SEPH”), and Guardian Financial Services Company (“GFSC”).
	Management is required to disclose information about the different types of business activities in which a company engages and also information on the different economic environments in which a company operates, so that the users of the financial statements can better understand the company’s performance, better understand the potential for future cash flows, and make more informed judgments about the company as a whole. Park has three operating segments, as: (i) discrete financial information is available for each operating segment and (ii) the segments are aligned with internal reporting to Park’s Chief Executive Officer and President, who is the chief operating decision maker.
		Operating Results for the three months ended March 31, 2015
	(In thousands)	PNB			GFSC		SEPH			All Other			Total
	Net interest income (expense)	$	53,821		$	1,692	$	(88	)	$	110		$	55,535
	Provision for (recovery of) loan losses	2,022			495		(885		)	—			1,632
	Other income	18,012			2		760			99			18,873
	Other expense	41,932			779		1,098			1,911			45,720
	Income (loss) before income taxes	$	27,879		$	420	$	459		$	(1,702	)	$	27,056
	Federal income taxes (benefit)	8,720			139		161			(1,008		)	8,012
	Net income (loss)	$	19,159		$	281	$	298		$	(694	)	$	19,044
	Assets (as of March 31, 2015)	$	7,212,490		$	38,569	$	43,513		$	9,427		$	7,303,999
		Operating Results for the three months ended March 31, 2014
	(In thousands)	PNB			GFSC		SEPH			All Other			Total
	Net interest income (expense)	$	53,099		$	1,978	$	(195	)	$	(402	)	$	54,480
	Provision for (recovery of) loan losses	(140		)	274		(2,359		)	—			(2,225		)
	Other income	15,703			1		837			107			16,648
	Other expense	40,392			775		2,521			2,091			45,779
	Income (loss) before income taxes	$	28,550		$	930	$	480		$	(2,386	)	$	27,574
	Federal income taxes (benefit)	8,985			326		168			(1,482		)	7,997
	Net income (loss)	$	19,565		$	604	$	312		$	(904	)	$	19,577
	Assets (as of March 31, 2014)	$	6,700,563		$	44,564	$	62,715		$	1,264		$	6,809,106
	The operating results of the Parent Company in the “All Other” column are used to reconcile the segment totals to the consolidated condensed statements of income for the three-month periods ended March 31, 2015 and 2014. The reconciling amounts for consolidated total assets for the periods ended March 31, 2015 and 2014 consisted of the elimination of intersegment borrowings and the assets of the Parent Company which were not eliminated.

Mortgage_Loans_Held_For_Sale_M

Mortgage Loans Held For Sale Mortgage Loans Held for Sale (Notes)	3 Months Ended
	Mar. 31, 2015
Mortgage Loans Held for Sale [Line Items]
Mortgage Loans Held For Sale Disclosure [Text Block]	Loans Held For Sale
	Mortgage loans held for sale are carried at their fair value. At March 31, 2015 and December 31, 2014, respectively, Park had approximately $8.0 million and $5.3 million in mortgage loans held for sale. These amounts are included in loans on the consolidated condensed balance sheets and in residential real estate loan segments in Note 3 and Note 4. The contractual balance was $7.9 million and $5.2 million at March 31, 2015 and December 31, 2014, respectively. The gain expected upon sale was $122,000 and $80,000 at March 31, 2015 and December 31, 2014, respectively. None of these loans were 90 days or more past due or on nonaccrual status as of March 31, 2015 or December 31, 2014.
	During the three months ended March 31, 2015, Park transferred to held for sale and sold certain commercial loans held for investment, with a book balance of $132,000, and recognized a gain of $756,000. There were no commercial loans held for sale or sold in the same period of 2014.

Investment_Securities

Investment Securities	3 Months Ended
	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities
	The amortized cost and fair value of investment securities are shown in the following tables. Management performs a quarterly evaluation of investment securities for any other-than-temporary impairment. For the three months ended March 31, 2015 and 2104, there were no investment securities deemed to be other-than-temporarily impaired.
	Investment securities at March 31, 2015, were as follows:
	Securities Available-for-Sale (In thousands)	Amortized		Gross		Gross		Estimated
		Cost		Unrealized		Unrealized		Fair Value
				Holding		Holding
				Gains		Losses
	Obligations of U.S. Treasury and other U.S. Government sponsored entities	$	496,887	$	570	$	2,286	$	495,171
	U.S. Government sponsored entities' asset-backed securities	753,444		16,525		2,293		767,676
	Other equity securities	1,120		1,510		—		2,630
	Total	$	1,251,451	$	18,605	$	4,579	$	1,265,477
	Securities Held-to-Maturity (In thousands)	Amortized		Gross		Gross		Estimated
		Cost		Unrealized		Unrealized		Fair Value
				Holding		Holding
				Gains		Losses
	U.S. Government sponsored entities' asset-backed securities	$	133,383	$	3,118	$	83	$	136,418
	Securities with unrealized losses at March 31, 2015, were as follows:
		Unrealized loss position for less than 12 months				Unrealized loss position for 12 months or longer				Total
	(In thousands)	Fair value		Unrealized		Fair value		Unrealized		Fair		Unrealized
				losses				losses		value		losses
	Securities Available-for-Sale
	Obligations of U.S. Treasury and other U.S. Government agencies	$	179,173	$	827	$	215,428	$	1,459	$	394,601	$	2,286
	U.S. Government agencies' asset-backed securities	$	—	$	—	$	132,583	$	2,293	$	132,583	$	2,293
	Total	$	179,173	$	827	$	348,011	$	3,752	$	527,184	$	4,579
	Securities Held-to-Maturity
	U.S. Government sponsored entities' asset-backed securities	$	—	$	—	$	8,028	$	83	$	8,028	$	83
	Investment securities at December 31, 2014, were as follows:
	Securities Available-for-Sale (In thousands)	Amortized		Gross		Gross		Estimated
		Cost		Unrealized		Unrealized		Fair Value
				Holding		Holding
				Gains		Losses
	Obligations of U.S. Treasury and other U.S. Government sponsored entities	$	546,886	$	11	$	8,833	$	538,064
	U.S. Government sponsored entities' asset-backed securities	751,974		13,421		4,242		761,153
	Other equity securities	1,120		1,578		—		2,698
	Total	$	1,299,980	$	15,010	$	13,075	$	1,301,915
	Securities Held-to-Maturity (In thousands)	Amortized		Gross		Gross		Estimated
		Cost		Unrealized		Unrealized		Fair Value
				Holding		Holding
				Gains		Losses
	U.S. Government sponsored entities' asset-backed securities	$	140,562	$	3,088	$	160	$	143,490
	Securities with unrealized losses at December 31, 2014, were as follows:
		Unrealized loss position for less than 12 months				Unrealized loss position for 12 months or longer				Total
	(In thousands)	Fair value		Unrealized		Fair value		Unrealized		Fair value		Unrealized
				losses				losses				losses
	Securities Available-for-Sale
	Obligations of U.S. Treasury and other U.S. Government sponsored entities	$	119,913	$	87	$	388,140	$	8,746	$	508,053	$	8,833
	U.S. Government sponsored entities' asset-backed securities	73,276		136		170,430		4,106		243,706		4,242
	Total	$	193,189	$	223	$	558,570	$	12,852	$	751,759	$	13,075
	Securities Held-to-Maturity
	U.S. Government sponsored entities' asset-backed securities	$	8,032	$	148	$	2,714	$	12	$	10,746	$	160
	Management does not believe any of the unrealized losses at March 31, 2015 or December 31, 2014 represented other-than-temporary impairment. Should the impairment of any of these securities become other-than-temporary, the cost basis of the investment will be reduced and the resulting loss recognized within net income in the period the other-than-temporary impairment is identified.
	Park’s U.S. Government sponsored entities' asset-backed securities consist of 15-year residential mortgage-backed securities and collateralized mortgage obligations.
	The amortized cost and estimated fair value of investments in debt securities at March 31, 2015, are shown in the following table by contractual maturity or the expected call date, except for asset-backed securities, which are shown as a single total, due to the unpredictability of the timing of principal repayments.
	Securities Available-for-Sale (In thousands)	Amortized		Fair value		Weighted Avg Yield
		cost
	U.S. Treasury and sponsored entities' obligations:
	Due within one year	100,000		100,568		2.11	%
	Due five through ten years	396,887		394,603		2.43	%
	Total	$	496,887	$	495,171	2.36	%
	U.S. Government sponsored entities' asset-backed securities:	$	753,444	$	767,676	2.34	%
	Securities Held-to-Maturity (In thousands)	Amortized		Fair value		Weighted Avg Yield
		cost
	U.S. Government sponsored entities' asset-backed securities	$	133,383	$	136,418	3.51	%
	The $495.2 million of Park’s securities shown at fair value in the above table as U.S. Treasury and sponsored entities' obligations are callable notes. These callable securities have final maturities of 5 to 8 years. Of the $495.2 million reported at March 31, 2015, $100.6 million were expected to be called and are shown in the table at their expected call date. The remaining average life of the investment portfolio is estimated to be 4.7 years.
There were no sales of investment securities during the three-month periods ended March 31, 2015 or 2014.

Other_Investment_Securities

Other Investment Securities	3 Months Ended
	Mar. 31, 2015
Other Investment Securities [Abstract]
Other Investment Securities	Other Investment Securities
	Other investment securities consist of stock investments in the Federal Home Loan Bank ("FHLB") and the Federal Reserve Bank ("FRB"). These restricted stock investments are carried at their redemption value.
		March 31,		December 31, 2014
	(In thousands)	2015
	Federal Home Loan Bank stock	$	50,086	$	50,086
	Federal Reserve Bank stock	8,225		8,225
	Total	$	58,311	$	58,311

Share_Based_Compensation_Notes

Share Based Compensation (Notes)	3 Months Ended
	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]	Share-Based Compensation
	The Park National Corporation 2013 Long-Term Incentive Plan (the "2013 Incentive Plan") was adopted by the Board of Directors of Park on January 28, 2013 and was approved by Park's shareholders at the Annual Meeting of Shareholders on April 22, 2013. The 2013 Incentive Plan replaces Park's 2005 Incentive Stock Option Plan (the "2005 Plan") and Park's Stock Plan for Non-Employee Directors of Park National Corporation and Subsidiaries (the "Directors' Stock Plan") which were terminated immediately following the approval of the 2013 Incentive Plan. The 2013 Incentive Plan makes equity-based awards and cash-based awards available for grant to participants in the form of incentive stock options, nonqualified stock options, stock appreciation rights, restricted common shares, restricted stock unit awards that may be settled in common shares, cash or a combination of the two, unrestricted common shares and cash-based awards. Under the 2013 Incentive Plan, 600,000 common shares are authorized to be issued and delivered in connection with grants under the 2013 Incentive Plan. The common shares to be issued and delivered under the 2013 Incentive Plan may consist of either common shares currently held or common shares subsequently acquired by Park as treasury shares, including common shares purchased in the open market or in private transactions. No awards may be made under the 2013 Incentive Plan after April 22, 2023. At March 31, 2015, 534,250 common shares were available for future grants under the 2013 Incentive Plan.
	On January 24, 2014, the Compensation Committee of the Board of Directors of Park granted awards of 21,975 performance-based restricted stock units (“PBRSUs”) to certain employees of Park, which grants were effective on January 24, 2014. On January 2, 2015, the Compensation Committee of the Board of Directors of Park granted awards of 23,025 PBRSUs to certain employees of Park, which grants were effective on January 2, 2015. The number of PBRSUs earned or settled will depend on certain performance conditions and are also subject to service-based vesting.
	Share-based compensation expense of $259,000 and $103,000 was recognized for the three-month periods ended March 31, 2015 and 2014, respectively. Park expects to recognize additional share-based compensation expense of approximately $1.1 million through the first quarter of 2018 related to PBRSUs granted in 2014 and approximately $1.8 million through the first quarter of 2019 related to PBRSUs granted in 2015.

Pension_Plan

Pension Plan	3 Months Ended
	Mar. 31, 2015
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Pension Plan	Pension Plan
	Park has a noncontributory defined benefit pension plan covering substantially all of its employees. The plan provides benefits based on an employee’s years of service and compensation.
	Park generally contributes annually an amount that can be deducted for federal income tax purposes using a different actuarial cost method and different assumptions from those used for financial reporting purposes. There were no pension plan contributions for the three-month periods ended March 31, 2015 and 2014.
	The following table shows the components of net periodic benefit (income) expense:
		Three Months Ended
		March 31,
	(In thousands)	2015			2014
	Service cost	$	1,342		$	1,083
	Interest cost	1,174			1,144
	Expected return on plan assets	(2,855		)	(2,717		)
	Amortization of prior service cost	4			5
	Recognized net actuarial loss	159			—
	Benefit (income) expense	$	(176	)	$	(485	)

Loan_Servicing

Loan Servicing	3 Months Ended
	Mar. 31, 2015
Transfers and Servicing of Financial Assets [Abstract]
Loan Servicing	Loan Servicing
	Park serviced sold mortgage loans of $1.26 billion at March 31, 2015, compared to $1.27 billion at December 31, 2014 and $1.30 billion at March 31, 2014. At March 31, 2015, $6.3 million of the sold mortgage loans were sold with recourse compared to $7.0 million at December 31, 2014 and $9.3 million at March 31, 2014. Management closely monitors the delinquency rates on the mortgage loans sold with recourse. At March 31, 2015 and December 31, 2014, management had established reserves of $171,000 and $379,000, respectively, to account for future loan repurchases.
	When Park sells mortgage loans with servicing rights retained, servicing rights are initially recorded at fair value. Park selected the “amortization method” as permissible within U.S. GAAP, whereby the servicing rights capitalized are amortized in proportion to and over the period of estimated future servicing income of the underlying loan. At the end of each reporting period, the carrying value of mortgage servicing rights (“MSRs”) is assessed for impairment with a comparison to fair value. MSRs are carried at the lower of their amortized cost or fair value.
	Activity for MSRs and the related valuation allowance follows:
		Three Months Ended
		March 31,
	(In thousands)	2015			2014
	Mortgage servicing rights:
	Carrying amount, net, beginning of period	$	8,613		$	9,013
	Additions	313			158
	Amortization	(392		)	(393		)
	Changes in valuation allowance	(222		)	—
	Carrying amount, net, end of period	$	8,312		$	8,778
	Valuation allowance:
	Beginning of period	$	826		$	1,031
	Changes in valuation allowance	222			—
	End of period	$	1,048		$	1,031
	Servicing fees included in other service income were $0.8 million and $0.9 million for the three months ended March 31, 2015 and 2014, respectively.

Fair_Value

Fair Value	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Fair Value	Fair Value
	The fair value hierarchy requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The three levels of inputs that Park uses to measure fair value are as follows:
	•	Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active markets that Park has the ability to access as of the measurement date.
	•	Level 2: Level 1 inputs for assets or liabilities that are not actively traded. Also consists of an observable market price for a similar asset or liability. This includes the use of “matrix pricing” to value debt securities absent the exclusive use of quoted prices.
	•	Level 3: Consists of unobservable inputs that are used to measure fair value when observable market inputs are not available. This could include the use of internally developed models, financial forecasting and similar inputs.
	Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability between market participants at the balance sheet date. When possible, the Company looks to active and observable markets to price identical assets or liabilities. When identical assets and liabilities are not traded in active markets, the Company looks to observable market data for similar assets and liabilities. However, certain assets and liabilities are not traded in observable markets and Park must use other valuation methods to develop a fair value. The fair value of impaired loans is typically based on the fair value of the underlying collateral, which is estimated through third-party appraisals in accordance with Park's valuation requirements per its commercial and real estate loan policies.
	Assets and Liabilities Measured at Fair Value on a Recurring Basis:
	The following table presents assets and liabilities measured at fair value on a recurring basis:
	Fair Value Measurements at March 31, 2015 using:
	(In thousands)		Level 1			Level 2			Level 3		Balance at March 31, 2015
	Assets
	Investment securities:
	Obligations of U.S. Treasury and other U.S. Government sponsored entities		$	—		$	495,171		$	—	$	495,171
	U.S. Government sponsored entities’ asset-backed securities		—			767,676			—		767,676
	Equity securities		1,891			—			739		2,630
	Mortgage loans held for sale		—			7,987			—		7,987
	Mortgage IRLCs		—			189			—		189
	Liabilities
	Fair value swap		$	—		$	—		$	226	$	226
	Fair Value Measurements at December 31, 2014 using:
	(In thousands)		Level 1			Level 2			Level 3		Balance at December 31, 2014
	Assets
	Investment securities:
	Obligations of U.S. Treasury and other U.S. Government sponsored entities		$	—		$	538,064		$	—	$	538,064
	U.S. Government sponsored entities’ asset-backed securities		—			761,153			—		761,153
	Equity securities		1,922			—			776		2,698
	Mortgage loans held for sale		—			5,264			—		5,264
	Mortgage IRLCs		—			70			—		70
	Liabilities
	Fair value swap		$	—		$	—		$	226	$	226
	There were no transfers between Level 1 and Level 2 during the three months ended March 31, 2015 or 2014. Management’s policy is to transfer assets or liabilities from one level to another when the methodology to obtain the fair value changes such that there are more or fewer unobservable inputs as of the end of the reporting period.
	The following methods and assumptions were used by the Company in determining fair value of the financial assets and liabilities discussed above:
	Investment securities: Fair values for investment securities are based on quoted market prices, where available. If quoted market prices are not available, fair values are based on quoted market prices of comparable instruments. The Fair Value Measurements tables exclude Park’s FHLB stock and FRB stock. These assets are carried at their respective redemption values, as it is not practicable to calculate their fair values. For securities where quoted prices or market prices of similar securities are not available, which include municipal securities, fair values are calculated using discounted cash flows.
	Fair value swap: The fair value of the swap agreement entered into with the purchaser of the Visa Class B shares represents an internally developed estimate of the exposure based upon probability-weighted potential Visa litigation losses.
	Mortgage Interest Rate Lock Commitments (IRLCs): IRLCs are based on current secondary market pricing and are classified as Level 2.
	Mortgage loans held for sale: Mortgage loans held for sale are carried at their fair value. Mortgage loans held for sale are estimated using security prices for similar product types and, therefore, are classified in Level 2.
	The table below is a reconciliation of the beginning and ending balances of the Level 3 inputs for the three months ended March 31, 2015 and 2014, for financial instruments measured on a recurring basis and classified as Level 3:
	Level 3 Fair Value Measurements
	Three months ended March 31, 2015 and 2014
	(In thousands)		Equity			Fair value
			Securities			swap
	Balance, at January 1, 2015		$	776		$	(226	)
	Total gains/(losses)
	Included in earnings – realized		—			—
	Included in earnings – unrealized		—			—
	Included in other comprehensive income (loss)		(37		)	—
	Purchases, sales, issuances and settlements, other		—			—
	Re-evaluation of fair value swap, recorded in other expense		—			—
	Balance at March 31, 2015		$	739		$	(226	)
	Balance, at January 1, 2014		$	759		$	(135	)
	Total gains/(losses)
	Included in earnings – realized		—			—
	Included in earnings – unrealized		—			—
	Included in other comprehensive income (loss)		(48		)	—
	Purchases, sales, issuances and settlements, other		—			—
	Re-evaluation of fair value swap		—			—
	Balance at March 31, 2014		$	711		$	(135	)
	Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis:
	The following methods and assumptions were used by the Company in determining the fair value of assets and liabilities measured at fair value on a nonrecurring basis described below:
	Impaired Loans: At the time a loan is considered impaired, it is valued at the lower of cost or fair value. Impaired loans carried at fair value have been partially charged-off or receive specific allocations of the allowance for loan losses. For collateral dependent loans, fair value is generally based on real estate appraisals. These appraisals may utilize a single valuation approach or a combination of approaches including comparable sales and the income approach. Adjustments are routinely made in the appraisal process by the independent appraisers to adjust for differences between the comparable sales and income data available. Such adjustments result in a Level 3 classification of the inputs for determining fair value. Collateral is then adjusted or discounted based on management’s historical knowledge, changes in market conditions from the time of the valuation, and management’s expertise and knowledge of the client and client’s business, resulting in a Level 3 fair value classification. Impaired loans are evaluated on a quarterly basis for additional impairment and adjusted accordingly. Additionally, updated independent valuations are obtained annually for all impaired loans in accordance with Company policy.
	Other Real Estate Owned (OREO): Assets acquired through or in lieu of loan foreclosure are initially recorded at fair value less costs to sell when acquired. The carrying value of OREO is not re-measured to fair value on a recurring basis, but is subject to fair value adjustments when the carrying value exceeds the fair value, less estimated selling costs. Fair value is based on recent real estate appraisals and is updated at least annually. These appraisals may utilize a single valuation approach or a combination of approaches including the comparable sales approach and the income approach. Adjustments are routinely made in the appraisal process by the independent appraisers to adjust for differences between the comparable sales and income data available. Such adjustments result in a Level 3 classification of the inputs for determining fair value.
	Appraisals for both collateral dependent impaired loans and OREO are performed by licensed appraisers. Appraisals are generally obtained to support the fair value of collateral. In general, there are three types of appraisals, real estate appraisals, income approach appraisals, and lot development loan appraisals, received by the Company. These are discussed below:
	•	Real estate appraisals typically incorporate measures such as recent sales prices for comparable properties. Appraisers may make adjustments to the sales prices of the comparable properties as deemed appropriate based on the age, condition or general characteristics of the subject property. Management generally applies a 15% discount to real estate appraised values which management expects will cover all disposition costs (including selling costs). This 15% discount is based on historical discounts to appraised values on sold OREO properties.
	•	Income approach appraisals typically incorporate the annual net operating income of the business divided by an appropriate capitalization rate, as determined by the appraiser. Management generally applies a 15% discount to income approach appraised values which management expects will cover all disposition costs (including selling costs).
•	Lot development loan appraisals are typically performed using a discounted cash flow analysis. Appraisers determine an anticipated absorption period and a discount rate that takes into account an investor’s required rate of return based on recent comparable sales. Management generally applies a 6% discount to lot development appraised values, which is an additional discount above the net present value calculation included in the appraisal, to account for selling costs.
MSRs: MSRs are carried at the lower of cost or fair value. MSRs do not trade in active, open markets with readily observable prices. For example, sales of MSRs do occur, but precise terms and conditions typically are not readily available. As such, management, with the assistance of a third-party specialist, determines fair value based on the discounted value of the future cash flows estimated to be received. Significant inputs include the discount rate and assumed prepayment speeds. The calculated fair value is then compared to market values where possible to ascertain the reasonableness of the valuation in relation to current market expectations for similar products. Accordingly, MSRs are classified as Level 2.
The following tables present assets and liabilities measured at fair value on a nonrecurring basis. Collateral dependent impaired loans are carried at fair value if they have been charged down to fair value or if a specific valuation allowance has been established. A new cost basis is established at the time a property is initially recorded in OREO. OREO properties are carried at fair value if a devaluation has been taken to the property's value subsequent to the initial measurement.
Fair Value Measurements at March 31, 2015 using:
(In thousands)		Level 1			Level 2			Level 3		Balance at March 31, 2015
Impaired loans recorded at fair value:
Commercial real estate		$	—		$	—		$	2,163	$	2,163
Construction real estate:
SEPH commercial land and development		—			—			2,076		2,076
Remaining commercial		—			—			3,199		3,199
Residential real estate		—			—			1,857		1,857
Total impaired loans recorded at fair value		$	—		$	—		$	9,295	$	9,295
Mortgage servicing rights		$	—		$	4,657		$	—	$	4,657
OREO:
Commercial real estate		—			—			862		862
Construction real estate		—			—			6,455		6,455
Residential real estate		—			—			2,576		2,576
Total OREO		$	—		$	—		$	9,893	$	9,893
Fair Value Measurements at December 31, 2014 using:
(In thousands)		Level 1			Level 2			Level 3		Balance at December 31, 2014
Impaired loans recorded at fair value:
Commercial real estate		$	—		$	—		$	8,481	$	8,481
Construction real estate:
SEPH commercial land and development		—			—			2,078		2,078
Remaining commercial		—			—			3,483		3,483
Residential real estate		—			—			2,921		2,921
Total impaired loans recorded at fair value		$	—		$	—		$	16,963	$	16,963
Mortgage servicing rights		$	—		$	2,928		$	—	$	2,928
OREO:
Commercial real estate		—			—			1,470		1,470
Construction real estate		—			—			6,473		6,473
Residential real estate		—			—			2,369		2,369
Total OREO		$	—		$	—		$	10,312	$	10,312
The table below provides additional detail on those impaired loans which are recorded at fair value as well as the remaining impaired loan portfolio not included above. The remaining impaired loans consist of loans which are not collateral dependent as well as loans carried at cost as the fair value of the underlying collateral or the present value of expected future cash flows on each of the loans exceeded the book value for each respective credit.
		31-Mar-15
(In thousands)		Recorded Investment			Prior Charge-Offs			Specific Valuation Allowance		Carrying Balance
Impaired loans recorded at fair value		$	12,520		$	13,228		$	3,225	$	9,295
Remaining impaired loans		57,972			12,564			1,839		56,133
Total impaired loans		$	70,492		$	25,792		$	5,064	$	65,428
		31-Dec-14
(In thousands)		Recorded Investment			Prior Charge-Offs			Specific Valuation Allowance		Carrying Balance
Impaired loans recorded at fair value		$	19,643		$	19,731		$	2,680	$	16,963
Remaining impaired loans		54,069			12,749			980		53,089
Total impaired loans		$	73,712		$	32,480		$	3,660	$	70,052
The expense of credit adjustments related to impaired loans carried at fair value during the three months ended March 31, 2015 and 2014 was $1.0 million and $2.2 million, respectively.
MSRs totaled $8.3 million at March 31, 2015. Of this $8.3 million MSR carrying balance, $4.7 million was recorded at fair value and included a valuation allowance of $1.0 million. The remaining $3.6 million was recorded at cost, as the fair value of the MSRs exceeded cost at March 31, 2015. At December 31, 2014, MSRs totaled $8.6 million. Of this $8.6 million MSR carrying balance, $2.9 million was recorded at fair value and included a valuation allowance of $0.8 million. The remaining $5.7 million was recorded at cost, as the fair value exceeded cost at December 31, 2014. The expense related to MSRs carried at fair value during the three-month period ended March 31, 2015 was $0.2 million. There was no income or expense related to MSRs carried at fair value during the three-month period ended March 31, 2014.
Total OREO held by Park at March 31, 2015 and December 31, 2014 was $26.3 million and $22.6 million, respectively. Approximately 38% of OREO held by Park at March 31, 2015 and 46% at December 31, 2014 was carried at fair value due to fair value adjustments made subsequent to the initial OREO measurement. At March 31, 2015 and December 31, 2014, OREO held at fair value, less estimated selling costs, amounted to $9.9 million and $10.3 million, respectively. The net expense related to OREO fair value adjustments was $0.3 million and $0.4 million for the three-month periods ended March 31, 2015 and 2014, respectively.
The following tables present qualitative information about Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis at March 31, 2015 and December 31, 2014:
31-Mar-15
(In thousands)		Fair Value			Valuation Technique		Unobservable Input(s)	Range
								(Weighted Average)
Impaired loans:
Commercial real estate		$	2,163		Sales comparison approach		Adj to comparables	0.0% - 137.3% (25.8%)
					Bulk sale approach		Discount rate	8.0% (8.0%)
					Income approach		Capitalization rate	8.0% - 10.3% (9.1%)
					Cost approach		Accumulated depreciation	23.0% - 50.0% (37.6%)
Construction real estate:
SEPH commercial land and development		$	2,076		Sales comparison approach		Adj to comparables	5.0% - 35.0% (17.5%)
					Bulk sale approach		Discount rate	10.8% (10.8%)
Remaining commercial		$	3,199		Sales comparison approach		Adj to comparables	0.2% - 67.0% (25.1%)
					Bulk sale approach		Discount rate	10.0% - 20.0% (14.8%)
Residential real estate		$	1,857		Sales comparison approach		Adj to comparables	0.0% - 83.0% (14.1%)
					Income approach		Capitalization rate	13.0% (13.0%)
Other real estate owned:
Commercial real estate		$	862		Sales comparison approach		Adj to comparables	0.0% - 60.0% (26.3%)
					Income approach		Capitalization rate	8.4% (8.4%)
					Cost approach		Accumulated depreciation	60.0% - 95.0% (77.5%)
Construction real estate		$	6,455		Sales comparison approach		Adj to comparables	0.0% - 82.9% (27.3%)
					Bulk sale approach		Discount rate	15.0% (15.0%)
Residential real estate		$	2,576		Sales comparison approach		Adj to comparables	0.0% - 51.2% (10.5%)
					Income approach		Capitalization rate	6.8% - 17.4% (8.3%)
					Cost approach		Accumulated depreciation	60.0% (60.0%)
Balance at December 31, 2014
(In thousands)		Fair Value			Valuation Technique		Unobservable Input(s)	Range
								(Weighted Average)
Impaired loans:
Commercial real estate		$	8,481		Sales comparison approach		Adj to comparables	0.0% - 84.0% (38.8%)
					Income approach		Capitalization rate	8.0% - 9.5% (9.4%)
					Cost approach		Accumulated depreciation	23.0% (23.0%)
Construction real estate:
SEPH commercial land and development		$	2,078		Sales comparison approach		Adj to comparables	5.0% - 35.0% (17.5%)
					Bulk sale approach		Discount rate	10.8% (10.8%)
Remaining commercial		$	3,483		Sales comparison approach		Adj to comparables	0.2% - 76.0% (45.4%)
					Bulk sale approach		Discount rate	10.0% - 22.0% (16.5%)
Residential real estate		$	2,921		Sales comparison approach		Adj to comparables	0.0% - 120.6% (11.1%)
					Income approach		Capitalization rate	7.9% - 10.0% (8.0%)
Other real estate owned:
Commercial real estate		$	1,470		Sales comparison approach		Adj to comparables	0.0% - 87.0% (30.5%)
					Income approach		Capitalization rate	8.4% - 10.0% (9.4%)
					Cost approach		Accumulated depreciation	60.0% - 95.0% (77.5%)
Construction real estate		$	6,473		Sales comparison approach		Adj to comparables	0.0% - 82.9% (27.1%)
					Bulk sale approach		Discount rate	15.0% (15.0%)
Residential real estate		$	2,369		Sales comparison approach		Adj to comparables	0.0% - 38.3% (10.1%)
					Income approach		Capitalization rate	6.8% - 7.8% (7.6%)
The following methods and assumptions were used by Park in estimating its fair value disclosures for assets and liabilities not discussed above:
Cash and cash equivalents: The carrying amounts reported in the consolidated condensed balance sheets for cash and short-term instruments approximate those assets’ fair values.
Loans receivable: For variable-rate loans that reprice frequently and with no significant change in credit risk, fair values are based on carrying values. The fair values for certain mortgage loans (e.g., one-to-four family residential) are based on quoted market prices of similar loans sold in conjunction with securitization transactions, adjusted for differences in loan characteristics. The fair values for other loans are estimated using discounted cash flow analyses, based upon interest rates currently being offered for loans with similar terms to borrowers of similar credit quality. The methods utilized to estimate the fair value do not necessarily represent an exit price.
Off-balance sheet instruments: Fair values for Park’s loan commitments and standby letters of credit are based on the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties’ credit standing. The carrying amount and fair value are not material.
Deposit liabilities: The fair values disclosed for demand deposits (e.g., interest and non-interest checking, savings, and money market accounts) are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amounts). The carrying amounts for variable-rate, fixed-term certificates of deposit approximate their fair values at the reporting date. Fair values for fixed-rate certificates of deposit are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities of time deposits.
Short-term borrowings: The carrying amounts of federal funds purchased, borrowings under repurchase agreements and other short-term borrowings approximate their fair values.
Long-term debt: Fair values for long-term debt are estimated using a discounted cash flow calculation that applies interest rates currently being offered on long-term debt to a schedule of monthly maturities.
Subordinated debentures and notes: Fair values for subordinated debentures and notes are estimated using a discounted cash flow calculation that applies interest rate spreads currently being offered on similar debt structures to a schedule of monthly maturities.
The fair value of financial instruments at March 31, 2015 and December 31, 2014, was as follows:
		March 31, 2015
					Fair Value Measurements
(In thousands)		Carrying value			Level 1			Level 2		Level 3		Total fair value
Financial assets:
Cash and money market instruments		$	580,485		$	580,485		$	—	$	—	$	580,485
Investment securities		1,398,860			1,891			1,399,265		739		1,401,895
Accrued interest receivable - securities		4,313			—			4,313		—		4,313
Accrued interest receivable - loans		13,666			—			—		13,666		13,666
Loans held for sale		7,987			—			7,987		—		7,987
Mortgage IRLCs		189			—			189		—		189
Impaired loans carried at fair value		9,295			—			—		9,295		9,295
Other loans, net		4,757,951			—			—		4,775,046		4,775,046
Loans receivable, net		$	4,775,422		$	—		$	8,176	$	4,784,341	$	4,792,517
Financial liabilities:
Noninterest bearing checking accounts		$	1,262,442		$	1,262,442		$	—	$	—	$	1,262,442
Interest bearing transactions accounts		1,311,827			1,311,827			—		—		1,311,827
Savings accounts		1,558,128			1,558,128			—		—		1,558,128
Time deposits		1,380,750			—			1,392,772		—		1,392,772
Other		2,700			2,700			—		—		2,700
Total deposits		$	5,515,847		$	4,135,097		$	1,392,772	$	—	$	5,527,869
Short-term borrowings		$	239,961		$	—		$	239,961	$	—	$	239,961
Long-term debt		733,555			—			778,231		—		778,231
Subordinated debentures/notes		45,000			—			43,421		—		43,421
Accrued interest payable – deposits		1,136			14			1,122		—		1,136
Accrued interest payable – debt/borrowings		1,452			7			1,445		—		1,452
Derivative financial instruments:
Fair value swap		$	226		$	—		$	—	$	226	$	226
		December 31, 2014
					Fair Value Measurements
(In thousands)		Carrying value			Level 1			Level 2		Level 3		Total fair value
Financial assets:
Cash and money market instruments		$	237,699		$	237,699		$	—	$	—	$	237,699
Investment securities		1,442,477			1,922			1,442,708		775		1,445,405
Accrued interest receivable - securities		4,048			—			4,048		—		4,048
Accrued interest receivable - loans		13,629			—			—		13,629		13,629
Loans held for sale		5,264			—			5,264		—		5,264
Mortgage IRLCs		70			—			70		—		70
Impaired loans carried at fair value		16,963			—			—		16,963		16,963
Other loans, net		4,753,033			—			—		4,757,461		4,757,461
Loans receivable, net		$	4,775,330		$	—		$	5,334	$	4,774,424	$	4,779,758
Financial liabilities:
Noninterest bearing checking accounts		$	1,269,296		$	1,269,296		$	—	—		$	1,269,296
Interest bearing transactions accounts		1,122,079			1,122,079			—		—		1,122,079
Savings accounts		1,325,445			1,325,445			—		—		1,325,445
Time deposits		1,409,911			—			1,422,885		—		1,422,885
Other		1,269			1,269			—		—		1,269
Total deposits		$	5,128,000		$	3,718,089		$	1,422,885	$	—	$	5,140,974
Short-term borrowings		$	276,980		$	—		$	276,980	$	—	$	276,980
Long-term debt		786,602			—			827,500		—		827,500
Subordinated debentures/notes		45,000			—			42,995		—		42,995
Accrued interest payable – deposits		1,125			14			1,111		—		1,125
Accrued interest payable – debt/borrowings		1,426			3			1,423		—		1,426
Derivative financial instruments:
Fair value swap		$	226		$	—		$	—	$	226	$	226

Other_Comprehensive_Income_Los

Other Comprehensive Income (Loss) Other Comprehensive Income (Loss) (Notes)	3 Months Ended
	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Comprehensive Income (Loss) Note [Text Block]	Other Comprehensive Income
	Other comprehensive income components, net of tax, are shown in the following table for the three-month periods ended March 31, 2015 and 2014:
	Three months ended March 31,		Changes in pension plan assets and benefit obligations			Unrealized gains and losses on available for sale securities			Total
	(in thousands)
	Beginning balance at December 31, 2014		$	(14,865	)	$	1,257		$	(13,608	)
		Other comprehensive income before reclassifications	—			7,859			7,859
		Amounts reclassified from accumulated other comprehensive income	—			—			—
	Net current period other comprehensive income		—			7,859			7,859
	Ending balance at March 31, 2015		$	(14,865	)	$	9,116		$	(5,749	)
	Beginning balance at December 31, 2013		$	(5,598	)	$	(29,821	)	$	(35,419	)
		Other comprehensive income before reclassifications	—			10,941			10,941
		Amounts reclassified from accumulated other comprehensive income	—			—			—
	Net current period other comprehensive income		—			10,941			10,941
	Ending balance at March 31, 2014		$	(5,598	)	$	(18,880	)	$	(24,478	)
	During the three-month periods ended March 31, 2015 and 2014, there were no reclassifications out of accumulated other comprehensive income.

Investment_in_Qualified_Afford

Investment in Qualified Affordable Housing (Notes)	3 Months Ended
	Mar. 31, 2015
Equity Method Investments and Joint Ventures [Abstract]
Affordable Housing Program [Text Block]	Investment in Qualified Affordable Housing
	Park makes certain equity investments in various limited partnerships that sponsor affordable housing projects. The purpose of these investments is to achieve a satisfactory return on capital, help create affordable housing opportunities, and to assist the Company to achieve our goals associated with the Community Reinvestment Act.
	Previously, these investments were accounted for under the cost method of accounting with amortization of the investment being recorded in miscellaneous other expense and tax benefits recognized in the provision for income taxes.
	During the first quarter of 2015, Park adopted ASU 2014-01, Accounting for Investments in Qualified Affordable Housing Projects, and elected the proportional amortization method with amortization expense and tax benefits recognized through the provision for income taxes. This ASU is required to be applied retrospectively to all periods presented. As a result of these changes, Park recorded a cumulative-effect adjustment to beginning retained earnings.
	The following table summarizes the impact of retrospective application to the balance sheet and income statement for all periods presented as well as the year ended December 31, 2014:
	(in thousands)	31-Dec-14
	Other assets
	As previously reported	$	140,803
	As reported under the new guidance	138,746
	Total assets
	As previously reported	$	7,003,256
	As reported under the new guidance	7,001,199
	Retained earnings
	As previously reported	$	486,541
	As reported under the new guidance	484,484
	Total equity
	As previously reported	$	698,598
	As reported under the new guidance	696,541
	(in thousands)	3 months ended		12 months ended December 31, 2014
		31-Mar-14
	Total other expense
	As previously reported	$	47,698	$	195,234
	As reported under the new guidance	45,779		187,510
	Income tax expense
	As previously reported	$	6,036	$	28,602
	As reported under the new guidance	7,997		36,459
	Net income
	As previously reported	$	19,619	$	84,090
	As reported under the new guidance	19,577		83,957
	The table below details the balances of Park’s affordable housing tax credit investments and related unfunded commitments as of March 31, 2015 and December 31, 2014.
	(in thousands)	31-Mar-15		31-Dec-14
	Affordable housing tax credit investments	$	47,184	$	48,911
	Unfunded commitments	14,038		16,629
	During each of the three months ended March 31, 2015 and 2014, Park recognized amortization expense of $1.7 million which was included within the provision for income taxes. Additionally, during the three months ended March 31, 2015 and 2014, Park recognized tax credits and other benefits from its affordable housing tax credit investments of $2.3 million and $2.2 million, respectively.

Repurchase_Agreement_Borrowing

Repurchase Agreement Borrowings (Notes)	3 Months Ended
	Mar. 31, 2015
Transfers and Servicing [Abstract]
Repurchase Agreement Borrowings	Repurchase Agreement Borrowings
	Securities sold under agreements to repurchase ("repurchase agreements") with customers represent funds deposited by customers, generally on an overnight basis, that are collateralized by investment securities owned by Park. Repurchase agreements with customers are included in short-term borrowings on the consolidated condensed balance sheets. Park's repurchase agreements with a third-party financial institution are classified as long-term debt on the consolidated condensed balance sheets.
	All repurchase agreements are subject to terms and conditions of repurchase/security agreements between Park and the client and are accounted for as secured borrowings. Park's repurchase agreements reflected in short-term borrowings consist of customer accounts and securities which are pledged on an individual security basis.
	At March 31, 2015 and December 31, 2014, Park's repurchase agreement borrowings totaled $540 million and $577 million, respectively. These borrowings were collateralized with U.S. government and agency securities with a carrying value of $581 million and $664 million at March 31, 2015 and December 31, 2014, respectively.
	The following table presents the carrying value of Park's repurchase agreements by remaining contractual maturity at March 31, 2015 and December 31, 2014:
		March 31, 2015
	(in thousands)	Remaining Contractual Maturity of the Agreements
		Overnight and Continuous		Up to 30 days		30 - 90 days		Greater than 90 days		Total
	U.S. government and agency securities	$	234,438	$	26	$	1,878	$	303,619	$	539,961
		December 31, 2014
	(in thousands)	Remaining Contractual Maturity of the Agreements
		Overnight and Continuous		Up to 30 days		30 - 90 days		Greater than 90 days		Total
	U.S. government and agency securities	$	268,427	$	164	$	4,940	$	303,449	$	576,980
	On November 30, 2012, Park restructured $300 million in repurchase agreements with a third-party financial institution paying a $25 million prepayment penalty. The penalty is included in long-term debt and is being amortized as an adjustment to interest expense over the remaining term of the repurchase agreements using the effective interest method. Of the $25 million prepayment penalty, $13.6 million and $14.8 million remained unamortized as of March 31, 2015 and December 31, 2014, respectively.

Loans_Tables

Loans (Tables)	3 Months Ended
	Mar. 31, 2015
Loans and Leases Receivable Disclosure [Abstract]
Composition Of Loan Portfolio By Class Of Loan	The composition of the loan portfolio, by class of loan, as of March 31, 2015 and December 31, 2014 was as follows:
		March 31, 2015													December 31, 2014
	(In thousands)	Loan				Accrued				Recorded					Loan				Accrued			Recorded
		balance				interest				investment					balance				interest			investment
						receivable													receivable
	Commercial, financial and agricultural *	$	844,333			$	3,265			$	847,598				$	856,535			$	3,218		$	859,753
	Commercial real estate *	1,071,265				3,529				1,074,794					1,069,637				3,546			1,073,183
	Construction real estate:
	SEPH commercial land and development *	2,182				1				2,183					2,195				—			2,195
	Remaining commercial	109,820				293				110,113					115,139				300			115,439
	Mortgage	30,886				81				30,967					31,148				72			31,220
	Installment	6,887				26				6,913					7,322				23			7,345
	Residential real estate:
	Commercial	412,724				1,034				413,758					417,612				1,038			418,650
	Mortgage	1,197,202				1,665				1,198,867					1,189,709				1,548			1,191,257
	HELOC	213,594				820				214,414					216,915				803			217,718
	Installment	25,885				91				25,976					27,139				97			27,236
	Consumer	912,854				2,817				915,671					893,160				2,967			896,127
	Leases	3,198				44				3,242					3,171				17			3,188
	Total loans	$	4,830,830			$	13,666			$	4,844,496				$	4,829,682			$	13,629		$	4,843,311
	* Included within commercial, financial and agricultural loans, commercial real estate loans, and SEPH commercial land and development loans is an immaterial amount of consumer loans that are not broken out by class.
Recorded Investment In Nonaccrual Restructured And Loans Past Due 90 Days Or More And Accruing	The following tables present the recorded investment in nonaccrual loans, accruing troubled debt restructurings, and loans past due 90 days or more and still accruing by class of loan as of March 31, 2015 and December 31, 2014:
			March 31, 2015
	(In thousands)		Nonaccrual				Accruing troubled debt restructurings				Loans past due				Total
			loans								90 days or more				nonperforming
											and accruing				loans
	Commercial, financial and agricultural		$	20,008			$	570			$	73			$	20,651
	Commercial real estate		14,232				2,668				—				16,900
	Construction real estate:
	SEPH commercial land and development		2,077				—				—				2,077
	Remaining commercial		5,671				54				—				5,725
	Mortgage		89				93				—				182
	Installment		111				121				—				232
	Residential real estate:
	Commercial		24,635				584				—				25,219
	Mortgage		21,323				10,631				719				32,673
	HELOC		1,822				780				—				2,602
	Installment		1,643				708				64				2,415
	Consumer		4,262				666				816				5,744
	Total loans		$	95,873			$	16,875			$	1,672			$	114,420
			December 31, 2014
	(In thousands)		Nonaccrual				Accruing troubled debt restructurings				Loans past due				Total
			loans								90 days or more				nonperforming
											and accruing				loans
	Commercial, financial and agricultural		$	18,826			$	297			$	229			$	19,352
	Commercial real estate		19,299				2,690				—				21,989
	Construction real estate:
	SEPH commercial land and development		2,078				—				—				2,078
	Remaining commercial		5,558				51				—				5,609
	Mortgage		59				94				9				162
	Installment		115				125				—				240
	Residential real estate:
	Commercial		24,336				594				—				24,930
	Mortgage		21,869				10,349				1,329				33,547
	HELOC		1,879				630				9				2,518
	Installment		1,743				779				—				2,522
	Consumer		4,631				723				1,133				6,487
	Total loans		$	100,393			$	16,332			$	2,709			$	119,434
Loans Individually And Collectively Evaluated For Impairment	The following table provides additional information regarding those nonaccrual and accruing troubled debt restructured loans that were individually evaluated for impairment and those collectively evaluated for impairment as of March 31, 2015 and December 31, 2014.
			March 31, 2015													December 31, 2014
	(In thousands)		Nonaccrual				Loans				Loans					Nonaccrual				Loans			Loans
			and accruing troubled debt				individually				collectively					and accruing troubled debt				individually			collectively
			restructurings				evaluated for				evaluated for					restructurings				evaluated for			evaluated for
							impairment				impairment									impairment			impairment
	Commercial, financial and agricultural		$	20,578			$	20,571			$	7				$	19,123			$	19,106		$	17
	Commercial real estate		16,900				16,900				—					21,989				21,989			—
	Construction real estate:
	SEPH commercial land and development		2,077				2,077				—					2,078				2,078			—
	Remaining commercial		5,725				5,725				—					5,609				5,609			—
	Mortgage		182				—				182					153				—			153
	Installment		232				—				232					240				—			240
	Residential real estate:
	Commercial		25,219				25,219				—					24,930				24,930			—
	Mortgage		31,954				—				31,954					32,218				—			32,218
	HELOC		2,602				—				2,602					2,509				—			2,509
	Installment		2,351				—				2,351					2,522				—			2,522
	Consumer		4,928				—				4,928					5,354				—			5,354
	Total loans		$	112,748			$	70,492			$	42,256				$	116,725			$	73,712		$	43,013
Loans Individually Evaluated For Impairment By Class Of Loans	The following table presents loans individually evaluated for impairment by class of loan as of March 31, 2015 and December 31, 2014.
			March 31, 2015													December 31, 2014
	(In thousands)		Unpaid				Recorded				Allowance					Unpaid				Recorded			Allowance
			principal				investment				for loan					principal				investment			for loan
			balance								losses					balance							losses
											allocated												allocated
	With no related allowance recorded:
	Commercial, financial and agricultural		$	25,671			$	17,301			$	—				$	30,601			$	17,883		$	—
	Commercial real estate		16,963				15,513				—					27,923				20,696			—
	Construction real estate:
	SEPH commercial land and development		10,861				2,077				—					11,026				2,078			—
	Remaining commercial		1,432				444				—					1,427				391			—
	Residential real estate:
	Commercial		25,770				23,852				—					25,822				23,352			—
	Consumer		—				—				—					—				—			—
	With an allowance recorded:
	Commercial, financial and agricultural		7,444				3,270				1,839					1,251				1,223			981
	Commercial real estate		1,419				1,387				645					1,310				1,293			262
	Construction real estate:
	SEPH commercial land and development		—				—				—					—				—			—
	Remaining commercial		5,281				5,281				2,157					5,218				5,218			1,812
	Residential real estate:
	Commercial		1,394				1,367				423					1,578				1,578			605
	Consumer		—				—				—					—				—			—
	Total		$	96,235			$	70,492			$	5,064				$	106,156			$	73,712		$	3,660
Average Recorded Investment And Interest Income Recognized On Loans Individually Evaluated For Impairment	The following table presents the average recorded investment and interest income recognized subsequent to impairment on loans individually evaluated for impairment as of and for the three months ended March 31, 2015 and March 31, 2014:
		Three Months Ended													Three Months Ended
		31-Mar-15													31-Mar-14
	(In thousands)	Recorded investment as of March 31, 2015				Average				Interest					Recorded investment as of March 31, 2014				Average			Interest
						recorded				income									recorded			income
						investment				recognized									investment			recognized
	Commercial, financial and agricultural	$	20,571			$	19,876			$	131				$	19,835			$	20,140		$	61
	Commercial real estate	16,900				18,977				163					39,395				40,995			253
	Construction real estate:
	SEPH commercial land and development	2,077				2,077				8					4,102				4,464			56
	Remaining commercial	5,725				5,697				5					10,530				10,379			47
	Residential real estate:
	Commercial	25,219				25,373				255					31,213				31,101			263
	Consumer	—				—				—					798				799			—
	Total	$	70,492			$	72,000			$	562				$	105,873			$	107,878		$	680
Aging Of Recorded Investment In Past Due Loans	The following tables present the aging of the recorded investment in past due loans as of March 31, 2015 and December 31, 2014 by class of loan.
		March 31, 2015
	(In thousands)	Accruing loans				Past due				Total past due				Total current				Total recorded
		past due 30-89				nonaccrual												investment
		days				loans and loans past
						due 90 days or
						more and
						accruing*
	Commercial, financial and agricultural	$	5,331			$	6,019			$	11,350			$	836,248			$	847,598
	Commercial real estate	317				1,818				2,135				1,072,659				1,074,794
	Construction real estate:
	SEPH commercial land and development	—				2,069				2,069				114				2,183
	Remaining commercial	163				75				238				109,875				110,113
	Mortgage	108				68				176				30,791				30,967
	Installment	116				6				122				6,791				6,913
	Residential real estate:
	Commercial	447				19,015				19,462				394,296				413,758
	Mortgage	8,985				9,176				18,161				1,180,706				1,198,867
	HELOC	490				132				622				213,792				214,414
	Installment	202				454				656				25,320				25,976
	Consumer	7,546				3,133				10,679				904,992				915,671
	Leases	—				—				—				3,242				3,242
	Total loans	$	23,705			$	41,965			$	65,670			$	4,778,826			$	4,844,496
	* Includes $1.7 million of loans past due 90 days or more and accruing. The remaining are past due, nonaccrual loans and accruing troubled debt restructurings.
		December 31, 2014
	(in thousands)	Accruing loans				Past due				Total past due				Total current				Total recorded
		past due 30-89				nonaccrual												investment
		days				loans and loans past
						due 90 days or
						more and
						accruing*
	Commercial, financial and agricultural	$	6,482			$	7,508			$	13,990			$	845,763			$	859,753
	Commercial real estate	808				8,288				9,096				1,064,087				1,073,183
	Construction real estate:
	SEPH commercial land and development	—				2,068				2,068				127				2,195
	Remaining commercial	166				77				243				115,196				115,439
	Mortgage	39				68				107				31,113				31,220
	Installment	21				25				46				7,299				7,345
	Residential real estate:
	Commercial	250				19,592				19,842				398,808				418,650
	Mortgage	11,146				10,637				21,783				1,169,474				1,191,257
	HELOC	262				387				649				217,069				217,718
	Installment	596				464				1,060				26,176				27,236
	Consumer	11,304				3,818				15,122				881,005				896,127
	Leases	—				—				—				3,188				3,188
	Total loans	$	31,074			$	52,932			$	84,006			$	4,759,305			$	4,843,311
	* Includes $2.7 million of loans past due 90 days or more and accruing. The remaining are past due, nonaccrual loans and accruing troubled debt restructurings.
Recorded Investment By Loan Grade	The tables below present the recorded investment by loan grade at March 31, 2015 and December 31, 2014 for all commercial loans:
		March 31, 2015
	(In thousands)	5 Rated				6 Rated				Impaired				Pass Rated				Recorded
																		Investment
	Commercial, financial and agricultural *	$	3,017			$	595			$	20,578			$	823,408			$	847,598
	Commercial real estate *	12,389				1,496				16,900				1,044,009				1,074,794
	Construction real estate:
	SEPH commercial land and development *	—				—				2,077				106				2,183
	Remaining commercial	4,006				—				5,725				100,382				110,113
	Residential real estate:
	Commercial	2,185				436				25,219				385,918				413,758
	Leases	—				—				—				3,242				3,242
	Total commercial loans	$	21,597			$	2,527			$	70,499			$	2,357,065			$	2,451,688
	* Included within commercial, financial and agricultural loans, commercial real estate loans, and SEPH commercial land and development loans is an immaterial amount of consumer loans that are not broken out by class.
		December 31, 2014
	(In thousands)	5 Rated				6 Rated				Impaired				Pass Rated				Recorded
																		Investment
	Commercial, financial and agricultural *	$	1,874			$	1,201			$	19,123			$	837,555			$	859,753
	Commercial real estate *	8,448				1,712				21,989				1,041,034				1,073,183
	Construction real estate:
	SEPH commercial land and development *	—				—				2,078				117				2,195
	Remaining commercial	3,349				57				5,609				106,424				115,439
	Residential real estate:
	Commercial	2,581				598				24,930				390,541				418,650
	Leases	—				—				—				3,188				3,188
	Total Commercial Loans	$	16,252			$	3,568			$	73,729			$	2,378,859			$	2,472,408
TDR Number Of Contracts Modified And Recorded Investment	The following tables detail the number of contracts modified as TDRs during the three-month periods ended March 31, 2015 and March 31, 2014, as well as the recorded investment of these contracts at March 31, 2015 and March 31, 2014. The recorded investment pre- and post-modification is generally the same due to the fact that Park does not typically provide for forgiveness of principal.
		Three Months Ended
		31-Mar-15
	(In thousands)	Number of			Accruing				Nonaccrual				Total
		Contracts											Recorded
													Investment
	Commercial, financial and agricultural	13			$	398			$	597			$	995
	Commercial real estate	6			—				1,314				1,314
	Construction real estate:
	SEPH commercial land and development	—			—				—				—
	Remaining commercial	—			—				—				—
	Mortgage	1			—				21				21
	Installment	—			—				—				—
	Residential real estate:
	Commercial	3			—				513				513
	Mortgage	7			328				206				534
	HELOC	10			193				108				301
	Installment	—			—				—				—
	Consumer	66			29				463				492
	Total loans	106			$	948			$	3,222			$	4,170
		Three Months Ended
		31-Mar-14
	(In thousands)	Number of			Accruing				Nonaccrual				Total
		Contracts											Recorded
													Investment
	Commercial, financial and agricultural	5			$	—			$	60			$	60
	Commercial real estate	3			161				523				684
	Construction real estate:
	SEPH commercial land and development	—			—				—				—
	Remaining commercial	—			—				—				—
	Mortgage	—			—				—				—
	Installment	—			—				—				—
	Residential real estate:
	Commercial	2			—				68				68
	Mortgage	7			164				495				659
	HELOC	—			—				—				—
	Installment	4			36				36				72
	Consumer	71			382				108				490
	Total loans	92			$	743			$	1,290			$	2,033
	Of those loans which were modified and determined to be a TDR during the three-month period ended March 31, 2015, $1.1 million were on nonaccrual status as of December 31, 2014. Of those loans which were modified and determined to be a TDR during the three-month period ended March 31, 2014, $900,000 were on nonaccrual status as of December 31, 2013.
Recorded Investment In Financing Receivable Modified As TDR Within 12 Months	The following tables present the recorded investment in financing receivables which were modified as TDRs within the previous 12 months and for which there was a payment default during the three-month periods ended March 31, 2015 and March 31, 2014, respectively. For these tables, a loan is considered to be in default when it becomes 30 days contractually past due under the modified terms. The additional allowance for loan loss resulting from the defaults on TDR loans was immaterial.
		Three Months Ended								Three Months Ended
		31-Mar-15								31-Mar-14
	(In thousands)	Number of			Recorded					Number of			Recorded
		Contracts			Investment					Contracts			Investment
	Commercial, financial and agricultural	3			$	70				7			$	89
	Commercial real estate	—			—					5			872
	Construction real estate:
	SEPH commercial land and development	—			—					—			—
	Remaining commercial	—			—					—			—
	Mortgage	—			—					—			—
	Installment	—			—					—			—
	Residential real estate:
	Commercial	—			—					2			302
	Mortgage	13			689					19			1,144
	HELOC	—			—					—			—
	Installment	1			8					6			108
	Consumer	47			349					49			345
	Leases	—			—					—			—
	Total loans	64			$	1,116				88			$	2,860
	Of the $1.1 million in modified TDRs which defaulted during the three months ended March 31, 2015, there were no accruing loans. Of the $2.9 million in modified TDRs which defaulted during the three months ended March 31, 2014, $499,000 were accruing loans and $2.4 million were nonaccrual loans.

Allowance_For_Loan_Losses_Tabl

Allowance For Loan Losses (Tables)	3 Months Ended
	Mar. 31, 2015
Loans and Leases Receivable, Allowance [Abstract]
Activity In The Allowance For Loan Losses	he activity in the allowance for loan losses for the three months ended March 31, 2015 and March 31, 2014 is summarized below.
		Three Months Ended
		31-Mar-15
	(In thousands)	Commercial,				Commercial				Construction				Residential				Consumer				Leases				Total
		financial and				real estate				real estate				real estate
		agricultural
	Allowance for loan losses:
	Beginning balance	$	10,719			$	8,808			$	8,652			$	14,772			$	11,401			$	—			$	54,352
	Charge-offs	352				130				—				422				2,514				—				3,418
	Recoveries	291				674				285				924				666				2				2,842
	Net charge-offs/(recoveries)	61				(544		)		(285		)		(502		)		1,848				(2		)		576
	Provision/(recovery)	703				(56		)		(182		)		(762		)		1,931				(2		)		1,632
	Ending balance	$	11,361			$	9,296			$	8,755			$	14,512			$	11,484			$	—			$	55,408
		Three Months Ended
		31-Mar-14
	(In thousands)	Commercial,				Commercial				Construction				Residential				Consumer				Leases				Total
		financial and				real estate				real estate				real estate
		agricultural
	Allowance for loan losses:
	Beginning balance	$	14,218			$	15,899			$	6,855			$	14,251			$	8,245			$	—			$	59,468
	Charge-offs	639				794				8				591				1,795				—				3,827
	Recoveries	247				1,558				794				1,227				3,014				1				6,841
	Net charge-offs/(recoveries)	392				(764		)		(786		)		(636		)		(1,219		)		(1		)		(3,014		)
	Provision/(recovery)	(64		)		(909		)		480				(680		)		(1,051		)		(1		)		(2,225		)
	Ending balance	$	13,762			$	15,754			$	8,121			$	14,207			$	8,413			$	—			$	60,257
Composition Of The Allowance For Loan Losses	The composition of the allowance for loan losses at March 31, 2015 and December 31, 2014 was as follows:
		March 31, 2015
	(In thousands)	Commercial,				Commercial				Construction				Residential				Consumer				Leases				Total
		financial and				real estate				real estate				real estate
		agricultural
	Allowance for loan losses:
	Ending allowance balance attributed to loans:
	Individually evaluated for impairment	$	1,839			$	645			$	2,157			$	423			$	—			$	—			$	5,064
	Collectively evaluated for impairment	9,522				8,651				6,598				14,089				11,484				—				50,344
	Total ending allowance balance	$	11,361			$	9,296			$	8,755			$	14,512			$	11,484			$	—			$	55,408
	Loan balance:
	Loans individually evaluated for impairment	$	20,570			$	16,892			$	7,802			$	25,197			$	—			$	—			$	70,461
	Loans collectively evaluated for impairment	823,763				1,054,373				141,973				1,824,208				912,854				3,198				4,760,369
	Total ending loan balance	$	844,333			$	1,071,265			$	149,775			$	1,849,405			$	912,854			$	3,198			$	4,830,830
	Allowance for loan losses as a percentage of loan balance:
	Loans individually evaluated for impairment	8.94		%		3.82		%		27.65		%		1.68		%		—		%		—		%		7.19		%
	Loans collectively evaluated for impairment	1.16		%		0.82		%		4.65		%		0.77		%		1.26		%		—		%		1.06		%
	Total	1.35		%		0.87		%		5.85		%		0.78		%		1.26		%		—		%		1.15		%
	Recorded investment:
	Loans individually evaluated for impairment	$	20,571			$	16,900			$	7,802			$	25,219			$	—			$	—			$	70,492
	Loans collectively evaluated for impairment	827,027				1,057,894				142,374				1,827,796				915,671				3,242				4,774,004
	Total ending recorded investment	$	847,598			$	1,074,794			$	150,176			$	1,853,015			$	915,671			$	3,242			$	4,844,496
			December 31, 2014
	(In thousands)		Commercial,				Commercial				Construction				Residential				Consumer				Leases				Total
			financial and				real estate				real estate				real estate
			agricultural
	Allowance for loan losses:
	Ending allowance balance attributed to loans:
	Individually evaluated for impairment		$	981			$	262			$	1,812			$	605			$	—			$	—			$	3,660
	Collectively evaluated for impairment		9,738				8,546				6,840				14,167				11,401				—				50,692
	Total ending allowance balance		$	10,719			$	8,808			$	8,652			$	14,772			$	11,401			$	—			$	54,352
	Loan balance:
	Loans individually evaluated for impairment		$	19,103			$	21,978			$	7,690			$	24,905			$	—			$	—			$	73,676
	Loans collectively evaluated for impairment		837,432				1,047,659				148,114				1,826,470				893,160				3,171				4,756,006
	Total ending loan balance		$	856,535			$	1,069,637			$	155,804			$	1,851,375			$	893,160			$	3,171			$	4,829,682
	Allowance for loan losses as a percentage of loan balance:
	Loans individually evaluated for impairment		5.14		%		1.19		%		23.56		%		2.43		%		—		%		—		%		4.97		%
	Loans collectively evaluated for impairment		1.16		%		0.82		%		4.62		%		0.78		%		1.28		%		—		%		1.07		%
	Total		1.25		%		0.82		%		5.55		%		0.8		%		1.28		%		—		%		1.13		%
	Recorded investment:
	Loans individually evaluated for impairment		$	19,106			$	21,989			$	7,687			$	24,930			$	—			$	—			$	73,712
	Loans collectively evaluated for impairment		840,647				1,051,194				148,512				1,829,931				896,127				3,188				4,769,599
	Total ending recorded investment		$	859,753			$	1,073,183			$	156,199			$	1,854,861			$	896,127			$	3,188			$	4,843,311

Other_Real_Estate_Owned_Tables

Other Real Estate Owned (Tables)	3 Months Ended
	Mar. 31, 2015
Other Real Estate Owned [Abstract]
Schedule of Assets Repossessed or Foreclosed, or loans in process of foreclosure [Table Text Block] [Text Block]	Other Real Estate Owned ("OREO")
	Management transfers a loan to OREO at the time that Park takes deed/title of the asset. The carrying amount of foreclosed properties held at March 31, 2015 and December 31, 2014 are listed below, as well as the recorded investment of loans secured by residential real estate properties for which formal foreclosure proceedings are in process.
	(in thousands)	31-Mar-15		31-Dec-14
	OREO:
	Commercial real estate	$	10,611	$	6,352
	Construction real estate	11,078		11,281
	Residential real estate	4,648		4,972
	Total OREO	$	26,337	$	22,605
	Loans in process of foreclosure:
	Residential real estate	$	3,464	$	2,807

Earnings_Per_Common_Share_Tabl

Earnings Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Summary Of Computation Of Basic And Diluted Earnings Per Common Share	The following table sets forth the computation of basic and diluted earnings per common share for the three months ended March 31, 2015 and 2014.
		Three Months Ended
		March 31,
	(In thousands, except share and per share data)	2015		2014
	Numerator:
	Net income available to common shareholders	$	19,044	$	19,577
	Denominator:
	Denominator for basic earnings per share (weighted average common shares outstanding)	15,379,170		15,401,105
	Effect of dilutive performance-based restricted stock units	42,758		13,792
	Denominator for diluted earnings per share (weighted average common shares outstanding adjusted for the effect of dilutive performance-based restricted stock units)	15,421,928		15,414,897
	Earnings per common share:
	Basic earnings per common share	$	1.24	$	1.27
	Diluted earnings per common share	$	1.23	$	1.27

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Schedule Of Operating Results By Segment
		Operating Results for the three months ended March 31, 2015
	(In thousands)	PNB			GFSC		SEPH			All Other			Total
	Net interest income (expense)	$	53,821		$	1,692	$	(88	)	$	110		$	55,535
	Provision for (recovery of) loan losses	2,022			495		(885		)	—			1,632
	Other income	18,012			2		760			99			18,873
	Other expense	41,932			779		1,098			1,911			45,720
	Income (loss) before income taxes	$	27,879		$	420	$	459		$	(1,702	)	$	27,056
	Federal income taxes (benefit)	8,720			139		161			(1,008		)	8,012
	Net income (loss)	$	19,159		$	281	$	298		$	(694	)	$	19,044
	Assets (as of March 31, 2015)	$	7,212,490		$	38,569	$	43,513		$	9,427		$	7,303,999
		Operating Results for the three months ended March 31, 2014
	(In thousands)	PNB			GFSC		SEPH			All Other			Total
	Net interest income (expense)	$	53,099		$	1,978	$	(195	)	$	(402	)	$	54,480
	Provision for (recovery of) loan losses	(140		)	274		(2,359		)	—			(2,225		)
	Other income	15,703			1		837			107			16,648
	Other expense	40,392			775		2,521			2,091			45,779
	Income (loss) before income taxes	$	28,550		$	930	$	480		$	(2,386	)	$	27,574
	Federal income taxes (benefit)	8,985			326		168			(1,482		)	7,997
	Net income (loss)	$	19,565		$	604	$	312		$	(904	)	$	19,577
	Assets (as of March 31, 2014)	$	6,700,563		$	44,564	$	62,715		$	1,264		$	6,809,106

Investment_Securities_Tables

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2015
Investments, Debt and Equity Securities [Abstract]
Schedule Of Investment Securities	Investment securities at March 31, 2015, were as follows:
	Securities Available-for-Sale (In thousands)	Amortized		Gross		Gross		Estimated
		Cost		Unrealized		Unrealized		Fair Value
				Holding		Holding
				Gains		Losses
	Obligations of U.S. Treasury and other U.S. Government sponsored entities	$	496,887	$	570	$	2,286	$	495,171
	U.S. Government sponsored entities' asset-backed securities	753,444		16,525		2,293		767,676
	Other equity securities	1,120		1,510		—		2,630
	Total	$	1,251,451	$	18,605	$	4,579	$	1,265,477
	Securities Held-to-Maturity (In thousands)	Amortized		Gross		Gross		Estimated
		Cost		Unrealized		Unrealized		Fair Value
				Holding		Holding
				Gains		Losses
	U.S. Government sponsored entities' asset-backed securities	$	133,383	$	3,118	$	83	$	136,418
	Investment securities at December 31, 2014, were as follows:
	Securities Available-for-Sale (In thousands)	Amortized		Gross		Gross		Estimated
		Cost		Unrealized		Unrealized		Fair Value
				Holding		Holding
				Gains		Losses
	Obligations of U.S. Treasury and other U.S. Government sponsored entities	$	546,886	$	11	$	8,833	$	538,064
	U.S. Government sponsored entities' asset-backed securities	751,974		13,421		4,242		761,153
	Other equity securities	1,120		1,578		—		2,698
	Total	$	1,299,980	$	15,010	$	13,075	$	1,301,915
	Securities Held-to-Maturity (In thousands)	Amortized		Gross		Gross		Estimated
		Cost		Unrealized		Unrealized		Fair Value
				Holding		Holding
				Gains		Losses
	U.S. Government sponsored entities' asset-backed securities	$	140,562	$	3,088	$	160	$	143,490
Schedule Of Unrealized Loss On Securities	Securities with unrealized losses at December 31, 2014, were as follows:
		Unrealized loss position for less than 12 months				Unrealized loss position for 12 months or longer				Total
	(In thousands)	Fair value		Unrealized		Fair value		Unrealized		Fair value		Unrealized
				losses				losses				losses
	Securities Available-for-Sale
	Obligations of U.S. Treasury and other U.S. Government sponsored entities	$	119,913	$	87	$	388,140	$	8,746	$	508,053	$	8,833
	U.S. Government sponsored entities' asset-backed securities	73,276		136		170,430		4,106		243,706		4,242
	Total	$	193,189	$	223	$	558,570	$	12,852	$	751,759	$	13,075
	Securities Held-to-Maturity
	U.S. Government sponsored entities' asset-backed securities	$	8,032	$	148	$	2,714	$	12	$	10,746	$	160
	Securities with unrealized losses at March 31, 2015, were as follows:
		Unrealized loss position for less than 12 months				Unrealized loss position for 12 months or longer				Total
	(In thousands)	Fair value		Unrealized		Fair value		Unrealized		Fair		Unrealized
				losses				losses		value		losses
	Securities Available-for-Sale
	Obligations of U.S. Treasury and other U.S. Government agencies	$	179,173	$	827	$	215,428	$	1,459	$	394,601	$	2,286
	U.S. Government agencies' asset-backed securities	$	—	$	—	$	132,583	$	2,293	$	132,583	$	2,293
	Total	$	179,173	$	827	$	348,011	$	3,752	$	527,184	$	4,579
	Securities Held-to-Maturity
	U.S. Government sponsored entities' asset-backed securities	$	—	$	—	$	8,028	$	83	$	8,028	$	83
Amortized Cost And Estimated Fair Value Of Investments In Debt Securities By Contractual Maturity	The amortized cost and estimated fair value of investments in debt securities at March 31, 2015, are shown in the following table by contractual maturity or the expected call date, except for asset-backed securities, which are shown as a single total, due to the unpredictability of the timing of principal repayments.
	Securities Available-for-Sale (In thousands)	Amortized		Fair value		Weighted Avg Yield
		cost
	U.S. Treasury and sponsored entities' obligations:
	Due within one year	100,000		100,568		2.11	%
	Due five through ten years	396,887		394,603		2.43	%
	Total	$	496,887	$	495,171	2.36	%
	U.S. Government sponsored entities' asset-backed securities:	$	753,444	$	767,676	2.34	%
	Securities Held-to-Maturity (In thousands)	Amortized		Fair value		Weighted Avg Yield
		cost
	U.S. Government sponsored entities' asset-backed securities	$	133,383	$	136,418	3.51	%

Other_Investment_Securities_Ta

Other Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2015
Other Investment Securities [Abstract]
Schedule Of Other Investment Securities	Other investment securities consist of stock investments in the Federal Home Loan Bank ("FHLB") and the Federal Reserve Bank ("FRB"). These restricted stock investments are carried at their redemption value.
		March 31,		December 31, 2014
	(In thousands)	2015
	Federal Home Loan Bank stock	$	50,086	$	50,086
	Federal Reserve Bank stock	8,225		8,225
	Total	$	58,311	$	58,311

Pension_Plan_Tables

Pension Plan (Tables)	3 Months Ended
	Mar. 31, 2015
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]
Components Of Net Periodic Benefit Expense	The following table shows the components of net periodic benefit (income) expense:
		Three Months Ended
		March 31,
	(In thousands)	2015			2014
	Service cost	$	1,342		$	1,083
	Interest cost	1,174			1,144
	Expected return on plan assets	(2,855		)	(2,717		)
	Amortization of prior service cost	4			5
	Recognized net actuarial loss	159			—
	Benefit (income) expense	$	(176	)	$	(485	)

Loan_Servicing_Tables

Loan Servicing (Tables)	3 Months Ended
	Mar. 31, 2015
Transfers and Servicing of Financial Assets [Abstract]
Activity For MSRs And Related Valuation Allowance	Activity for MSRs and the related valuation allowance follows:
		Three Months Ended
		March 31,
	(In thousands)	2015			2014
	Mortgage servicing rights:
	Carrying amount, net, beginning of period	$	8,613		$	9,013
	Additions	313			158
	Amortization	(392		)	(393		)
	Changes in valuation allowance	(222		)	—
	Carrying amount, net, end of period	$	8,312		$	8,778
	Valuation allowance:
	Beginning of period	$	826		$	1,031
	Changes in valuation allowance	222			—
	End of period	$	1,048		$	1,031

Fair_Value_Tables

Fair Value (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Disclosures [Abstract]
Assets And Liabilities Measured At Fair Value On A Recurring Basis	The following table presents assets and liabilities measured at fair value on a recurring basis:
	Fair Value Measurements at March 31, 2015 using:
	(In thousands)	Level 1			Level 2			Level 3		Balance at March 31, 2015
	Assets
	Investment securities:
	Obligations of U.S. Treasury and other U.S. Government sponsored entities	$	—		$	495,171		$	—	$	495,171
	U.S. Government sponsored entities’ asset-backed securities	—			767,676			—		767,676
	Equity securities	1,891			—			739		2,630
	Mortgage loans held for sale	—			7,987			—		7,987
	Mortgage IRLCs	—			189			—		189
	Liabilities
	Fair value swap	$	—		$	—		$	226	$	226
	Fair Value Measurements at December 31, 2014 using:
	(In thousands)	Level 1			Level 2			Level 3		Balance at December 31, 2014
	Assets
	Investment securities:
	Obligations of U.S. Treasury and other U.S. Government sponsored entities	$	—		$	538,064		$	—	$	538,064
	U.S. Government sponsored entities’ asset-backed securities	—			761,153			—		761,153
	Equity securities	1,922			—			776		2,698
	Mortgage loans held for sale	—			5,264			—		5,264
	Mortgage IRLCs	—			70			—		70
	Liabilities
	Fair value swap	$	—		$	—		$	226	$	226
Reconciliation Of Level 3 Input For Financial Instruments Measured On Recurring Basis	The table below is a reconciliation of the beginning and ending balances of the Level 3 inputs for the three months ended March 31, 2015 and 2014, for financial instruments measured on a recurring basis and classified as Level 3:
	Level 3 Fair Value Measurements
	Three months ended March 31, 2015 and 2014
	(In thousands)	Equity			Fair value
		Securities			swap
	Balance, at January 1, 2015	$	776		$	(226	)
	Total gains/(losses)
	Included in earnings – realized	—			—
	Included in earnings – unrealized	—			—
	Included in other comprehensive income (loss)	(37		)	—
	Purchases, sales, issuances and settlements, other	—			—
	Re-evaluation of fair value swap, recorded in other expense	—			—
	Balance at March 31, 2015	$	739		$	(226	)
	Balance, at January 1, 2014	$	759		$	(135	)
	Total gains/(losses)
	Included in earnings – realized	—			—
	Included in earnings – unrealized	—			—
	Included in other comprehensive income (loss)	(48		)	—
	Purchases, sales, issuances and settlements, other	—			—
	Re-evaluation of fair value swap	—			—
	Balance at March 31, 2014	$	711		$	(135	)
Assets And Liabilities Measured At Fair Value On A Nonrecurring Basis	The following tables present assets and liabilities measured at fair value on a nonrecurring basis. Collateral dependent impaired loans are carried at fair value if they have been charged down to fair value or if a specific valuation allowance has been established. A new cost basis is established at the time a property is initially recorded in OREO. OREO properties are carried at fair value if a devaluation has been taken to the property's value subsequent to the initial measurement.
	Fair Value Measurements at March 31, 2015 using:
	(In thousands)	Level 1			Level 2			Level 3		Balance at March 31, 2015
	Impaired loans recorded at fair value:
	Commercial real estate	$	—		$	—		$	2,163	$	2,163
	Construction real estate:
	SEPH commercial land and development	—			—			2,076		2,076
	Remaining commercial	—			—			3,199		3,199
	Residential real estate	—			—			1,857		1,857
	Total impaired loans recorded at fair value	$	—		$	—		$	9,295	$	9,295
	Mortgage servicing rights	$	—		$	4,657		$	—	$	4,657
	OREO:
	Commercial real estate	—			—			862		862
	Construction real estate	—			—			6,455		6,455
	Residential real estate	—			—			2,576		2,576
	Total OREO	$	—		$	—		$	9,893	$	9,893
	Fair Value Measurements at December 31, 2014 using:
	(In thousands)	Level 1			Level 2			Level 3		Balance at December 31, 2014
	Impaired loans recorded at fair value:
	Commercial real estate	$	—		$	—		$	8,481	$	8,481
	Construction real estate:
	SEPH commercial land and development	—			—			2,078		2,078
	Remaining commercial	—			—			3,483		3,483
	Residential real estate	—			—			2,921		2,921
	Total impaired loans recorded at fair value	$	—		$	—		$	16,963	$	16,963
	Mortgage servicing rights	$	—		$	2,928		$	—	$	2,928
	OREO:
	Commercial real estate	—			—			1,470		1,470
	Construction real estate	—			—			6,473		6,473
	Residential real estate	—			—			2,369		2,369
	Total OREO	$	—		$	—		$	10,312	$	10,312
Qualitative Information about Level 3 Fair Value Measurements Measured on Non-Recurring Basis	The following tables present qualitative information about Level 3 fair value measurements for financial instruments measured at fair value on a non-recurring basis at March 31, 2015 and December 31, 2014:
	31-Mar-15
	(In thousands)	Fair Value			Valuation Technique		Unobservable Input(s)	Range
								(Weighted Average)
	Impaired loans:
	Commercial real estate	$	2,163		Sales comparison approach		Adj to comparables	0.0% - 137.3% (25.8%)
					Bulk sale approach		Discount rate	8.0% (8.0%)
					Income approach		Capitalization rate	8.0% - 10.3% (9.1%)
					Cost approach		Accumulated depreciation	23.0% - 50.0% (37.6%)
	Construction real estate:
	SEPH commercial land and development	$	2,076		Sales comparison approach		Adj to comparables	5.0% - 35.0% (17.5%)
					Bulk sale approach		Discount rate	10.8% (10.8%)
	Remaining commercial	$	3,199		Sales comparison approach		Adj to comparables	0.2% - 67.0% (25.1%)
					Bulk sale approach		Discount rate	10.0% - 20.0% (14.8%)
	Residential real estate	$	1,857		Sales comparison approach		Adj to comparables	0.0% - 83.0% (14.1%)
					Income approach		Capitalization rate	13.0% (13.0%)
	Other real estate owned:
	Commercial real estate	$	862		Sales comparison approach		Adj to comparables	0.0% - 60.0% (26.3%)
					Income approach		Capitalization rate	8.4% (8.4%)
					Cost approach		Accumulated depreciation	60.0% - 95.0% (77.5%)
	Construction real estate	$	6,455		Sales comparison approach		Adj to comparables	0.0% - 82.9% (27.3%)
					Bulk sale approach		Discount rate	15.0% (15.0%)
	Residential real estate	$	2,576		Sales comparison approach		Adj to comparables	0.0% - 51.2% (10.5%)
					Income approach		Capitalization rate	6.8% - 17.4% (8.3%)
					Cost approach		Accumulated depreciation	60.0% (60.0%)
	Balance at December 31, 2014
	(In thousands)	Fair Value			Valuation Technique		Unobservable Input(s)	Range
								(Weighted Average)
	Impaired loans:
	Commercial real estate	$	8,481		Sales comparison approach		Adj to comparables	0.0% - 84.0% (38.8%)
					Income approach		Capitalization rate	8.0% - 9.5% (9.4%)
					Cost approach		Accumulated depreciation	23.0% (23.0%)
	Construction real estate:
	SEPH commercial land and development	$	2,078		Sales comparison approach		Adj to comparables	5.0% - 35.0% (17.5%)
					Bulk sale approach		Discount rate	10.8% (10.8%)
	Remaining commercial	$	3,483		Sales comparison approach		Adj to comparables	0.2% - 76.0% (45.4%)
					Bulk sale approach		Discount rate	10.0% - 22.0% (16.5%)
	Residential real estate	$	2,921		Sales comparison approach		Adj to comparables	0.0% - 120.6% (11.1%)
					Income approach		Capitalization rate	7.9% - 10.0% (8.0%)
	Other real estate owned:
	Commercial real estate	$	1,470		Sales comparison approach		Adj to comparables	0.0% - 87.0% (30.5%)
					Income approach		Capitalization rate	8.4% - 10.0% (9.4%)
					Cost approach		Accumulated depreciation	60.0% - 95.0% (77.5%)
	Construction real estate	$	6,473		Sales comparison approach		Adj to comparables	0.0% - 82.9% (27.1%)
					Bulk sale approach		Discount rate	15.0% (15.0%)
	Residential real estate	$	2,369		Sales comparison approach		Adj to comparables	0.0% - 38.3% (10.1%)
					Income approach		Capitalization rate	6.8% - 7.8% (7.6%)
Fair Value, by Balance Sheet Grouping	The fair value of financial instruments at March 31, 2015 and December 31, 2014, was as follows:
		March 31, 2015
					Fair Value Measurements
	(In thousands)	Carrying value			Level 1			Level 2		Level 3		Total fair value
	Financial assets:
	Cash and money market instruments	$	580,485		$	580,485		$	—	$	—	$	580,485
	Investment securities	1,398,860			1,891			1,399,265		739		1,401,895
	Accrued interest receivable - securities	4,313			—			4,313		—		4,313
	Accrued interest receivable - loans	13,666			—			—		13,666		13,666
	Loans held for sale	7,987			—			7,987		—		7,987
	Mortgage IRLCs	189			—			189		—		189
	Impaired loans carried at fair value	9,295			—			—		9,295		9,295
	Other loans, net	4,757,951			—			—		4,775,046		4,775,046
	Loans receivable, net	$	4,775,422		$	—		$	8,176	$	4,784,341	$	4,792,517
	Financial liabilities:
	Noninterest bearing checking accounts	$	1,262,442		$	1,262,442		$	—	$	—	$	1,262,442
	Interest bearing transactions accounts	1,311,827			1,311,827			—		—		1,311,827
	Savings accounts	1,558,128			1,558,128			—		—		1,558,128
	Time deposits	1,380,750			—			1,392,772		—		1,392,772
	Other	2,700			2,700			—		—		2,700
	Total deposits	$	5,515,847		$	4,135,097		$	1,392,772	$	—	$	5,527,869
	Short-term borrowings	$	239,961		$	—		$	239,961	$	—	$	239,961
	Long-term debt	733,555			—			778,231		—		778,231
	Subordinated debentures/notes	45,000			—			43,421		—		43,421
	Accrued interest payable – deposits	1,136			14			1,122		—		1,136
	Accrued interest payable – debt/borrowings	1,452			7			1,445		—		1,452
	Derivative financial instruments:
	Fair value swap	$	226		$	—		$	—	$	226	$	226
		December 31, 2014
					Fair Value Measurements
	(In thousands)	Carrying value			Level 1			Level 2		Level 3		Total fair value
	Financial assets:
	Cash and money market instruments	$	237,699		$	237,699		$	—	$	—	$	237,699
	Investment securities	1,442,477			1,922			1,442,708		775		1,445,405
	Accrued interest receivable - securities	4,048			—			4,048		—		4,048
	Accrued interest receivable - loans	13,629			—			—		13,629		13,629
	Loans held for sale	5,264			—			5,264		—		5,264
	Mortgage IRLCs	70			—			70		—		70
	Impaired loans carried at fair value	16,963			—			—		16,963		16,963
	Other loans, net	4,753,033			—			—		4,757,461		4,757,461
	Loans receivable, net	$	4,775,330		$	—		$	5,334	$	4,774,424	$	4,779,758
	Financial liabilities:
	Noninterest bearing checking accounts	$	1,269,296		$	1,269,296		$	—	—		$	1,269,296
	Interest bearing transactions accounts	1,122,079			1,122,079			—		—		1,122,079
	Savings accounts	1,325,445			1,325,445			—		—		1,325,445
	Time deposits	1,409,911			—			1,422,885		—		1,422,885
	Other	1,269			1,269			—		—		1,269
	Total deposits	$	5,128,000		$	3,718,089		$	1,422,885	$	—	$	5,140,974
	Short-term borrowings	$	276,980		$	—		$	276,980	$	—	$	276,980
	Long-term debt	786,602			—			827,500		—		827,500
	Subordinated debentures/notes	45,000			—			42,995		—		42,995
	Accrued interest payable – deposits	1,125			14			1,111		—		1,125
	Accrued interest payable – debt/borrowings	1,426			3			1,423		—		1,426
	Derivative financial instruments:
	Fair value swap	$	226		$	—		$	—	$	226	$	226

Other_Comprehensive_Income_Los1

Other Comprehensive Income (Loss) Other Comprehensive Income (Loss) Net of Tax (Tables)	3 Months Ended
	Mar. 31, 2015
Statement of Comprehensive Income [Abstract]
Comprehensive Income (Loss) [Table Text Block]	Other comprehensive income components, net of tax, are shown in the following table for the three-month periods ended March 31, 2015 and 2014:
	Three months ended March 31,		Changes in pension plan assets and benefit obligations			Unrealized gains and losses on available for sale securities			Total
	(in thousands)
	Beginning balance at December 31, 2014		$	(14,865	)	$	1,257		$	(13,608	)
		Other comprehensive income before reclassifications	—			7,859			7,859
		Amounts reclassified from accumulated other comprehensive income	—			—			—
	Net current period other comprehensive income		—			7,859			7,859
	Ending balance at March 31, 2015		$	(14,865	)	$	9,116		$	(5,749	)
	Beginning balance at December 31, 2013		$	(5,598	)	$	(29,821	)	$	(35,419	)
		Other comprehensive income before reclassifications	—			10,941			10,941
		Amounts reclassified from accumulated other comprehensive income	—			—			—
	Net current period other comprehensive income		—			10,941			10,941
	Ending balance at March 31, 2014		$	(5,598	)	$	(18,880	)	$	(24,478	)

Investment_in_Qualified_Afford1

Investment in Qualified Affordable Housing (Tables)	3 Months Ended
	Mar. 31, 2015
Schedule of Equity Method Investments [Line Items]
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	The following table summarizes the impact of retrospective application to the balance sheet and income statement for all periods presented as well as the year ended December 31, 2014:
	(in thousands)	31-Dec-14
	Other assets
	As previously reported	$	140,803
	As reported under the new guidance	138,746
	Total assets
	As previously reported	$	7,003,256
	As reported under the new guidance	7,001,199
	Retained earnings
	As previously reported	$	486,541
	As reported under the new guidance	484,484
	Total equity
	As previously reported	$	698,598
	As reported under the new guidance	696,541
	(in thousands)	3 months ended		12 months ended December 31, 2014
		31-Mar-14
	Total other expense
	As previously reported	$	47,698	$	195,234
	As reported under the new guidance	45,779		187,510
	Income tax expense
	As previously reported	$	6,036	$	28,602
	As reported under the new guidance	7,997		36,459
	Net income
	As previously reported	$	19,619	$	84,090
	As reported under the new guidance	19,577		83,957
Activity in Affordable Housing Program Obligation [Table Text Block]	The table below details the balances of Park’s affordable housing tax credit investments and related unfunded commitments as of March 31, 2015 and December 31, 2014.
	(in thousands)	31-Mar-15		31-Dec-14
	Affordable housing tax credit investments	$	47,184	$	48,911
	Unfunded commitments	14,038		16,629

Repurchase_Agreement_Borrowing1

Repurchase Agreement Borrowings (Tables)	3 Months Ended
	Mar. 31, 2015
Transfers and Servicing [Abstract]
Schedule of Assets and Associated Liabilities Accounted for as Secured Borrowings [Table Text Block]	The following table presents the carrying value of Park's repurchase agreements by remaining contractual maturity at March 31, 2015 and December 31, 2014:
		March 31, 2015
	(in thousands)	Remaining Contractual Maturity of the Agreements
		Overnight and Continuous		Up to 30 days		30 - 90 days		Greater than 90 days		Total
	U.S. government and agency securities	$	234,438	$	26	$	1,878	$	303,619	$	539,961
		December 31, 2014
	(in thousands)	Remaining Contractual Maturity of the Agreements
		Overnight and Continuous		Up to 30 days		30 - 90 days		Greater than 90 days		Total
	U.S. government and agency securities	$	268,427	$	164	$	4,940	$	303,449	$	576,980

Loans_Narrative_Details

Loans (Narrative) (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Deferred Income	$9,600,000		$9,400,000
Troubled Debt Restructuring, Classification removed		966,000
Partial Charge-Offs On Impaired Loans	25,792,000		32,480,000
Impaired Financing Receivable, Related Allowance	5,064,000		3,660,000
Recorded investment, related to loans	11,300,000		9,300,000
Troubled Debt Restructuring Included In Nonaccrual Loans	42,600,000		47,500,000
TDRs included in accruing loan totals	16,900,000		16,300,000
Nonaccrual Trouble Debt Restructuring Current	18,100,000		15,700,000
Commitments to lend additional funds to borrowers whose terms had been modified in a TDR	2,200,000		1,400,000
Specific reserves related to troubled debt restructuring	3,500,000		2,400,000
Additional specific reserves related to troubled debt restructurings	857,000	18,000
Modified substandard commercial loans, total recorded investment	131,000	392,000
Modified substandard consumer loans, total recorded investment	4,500,000	5,700,000
Loan Modifications on Nonacrrual status	1,100,000	900,000
Loan past due period before entering default status	30 days
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	1,116,000	2,860,000
Deposit Liabilities Reclassified as Loans Receivable	3,200,000		2,300,000
Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Recorded Investment [Line Items]
Partial Charge-Offs On Impaired Loans	21,600,000		32,400,000
Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Recorded Investment [Line Items]
Partial Charge-Offs On Impaired Loans	4,200,000		0
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period		872,000
Commercial Real Estate [Member] | Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Related Allowance	0		0
Commercial Real Estate [Member] | Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Related Allowance	645,000		262,000
Accruing [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans modified during period		499,000
Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans modified during period		$2,400,000

Loans_Composition_Of_Loan_Port

Loans (Composition Of Loan Portfolio By Class Of Loan) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Recorded Investment	$70,492		$105,873	$73,712
Loan balance	4,830,830			4,829,682
Accrued interest receivable	17,979			17,677
Recorded Investment	4,844,496			4,843,311
Impaired Financing Receivable, Average Recorded Investment	72,000		107,878
Impaired Financing Receivable, Interest Income, Cash Basis Method	562		680
Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Recorded Investment	20,571		19,835
Impaired Financing Receivable, Average Recorded Investment	19,876		20,140
Impaired Financing Receivable, Interest Income, Cash Basis Method	131		61
Construction Real Estate, SEPH Commercial Land and Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Recorded Investment	2,077		4,102
Loan balance	2,182	[1]		2,195	[1]
Accrued interest receivable	1	[1]		0	[1]
Recorded Investment	2,183	[1]		2,195	[1]
Impaired Financing Receivable, Average Recorded Investment	2,077		4,464
Impaired Financing Receivable, Interest Income, Cash Basis Method	8		56
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Recorded Investment	5,725		10,530
Loan balance	109,820			115,139
Accrued interest receivable	293			300
Recorded Investment	110,113			115,439
Impaired Financing Receivable, Average Recorded Investment	5,697		10,379
Impaired Financing Receivable, Interest Income, Cash Basis Method	5		47
Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan balance	30,886			31,148
Accrued interest receivable	81			72
Recorded Investment	30,967			31,220
Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan balance	6,887			7,322
Accrued interest receivable	26			23
Recorded Investment	6,913			7,345
Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Recorded Investment	25,219		31,213
Loan balance	412,724			417,612
Accrued interest receivable	1,034			1,038
Recorded Investment	413,758			418,650
Impaired Financing Receivable, Average Recorded Investment	25,373		31,101
Impaired Financing Receivable, Interest Income, Cash Basis Method	255		263
Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan balance	1,197,202			1,189,709
Accrued interest receivable	1,665			1,548
Recorded Investment	1,198,867			1,191,257
Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan balance	213,594			216,915
Accrued interest receivable	820			803
Recorded Investment	214,414			217,718
Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan balance	25,885			27,139
Accrued interest receivable	91			97
Recorded Investment	25,976			27,236
Loans Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Accrued interest receivable	13,666			13,629
Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan balance	844,333	[1]		856,535	[1]
Accrued interest receivable	3,265	[1]		3,218	[1]
Recorded Investment	847,598	[1]		859,753	[1]
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Recorded Investment	16,900		39,395
Loan balance	1,071,265	[1]		1,069,637	[1]
Accrued interest receivable	3,529	[1]		3,546	[1]
Recorded Investment	1,074,794	[1]		1,073,183	[1]
Impaired Financing Receivable, Average Recorded Investment	18,977		40,995
Impaired Financing Receivable, Interest Income, Cash Basis Method	163		253
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Recorded Investment			798
Loan balance	912,854			893,160
Accrued interest receivable	2,817			2,967
Recorded Investment	915,671			896,127
Impaired Financing Receivable, Average Recorded Investment			799
Impaired Financing Receivable, Interest Income, Cash Basis Method	0		0
Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan balance	3,198			3,171
Accrued interest receivable	44			17
Recorded Investment	$3,242			$3,188
[1]	Included within commercial, financial and agricultural loans, commercial real estate loans, and SEPH commercial land and development loans is an immaterial amount of consumer loans that are not broken out by class.

Loans_Recorded_Investment_In_N

Loans (Recorded Investment In Nonaccrual Restructured And Loans Past Due 90 Days Or More And Accruing) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	$95,873	$100,393
Accruing restructured loans	16,875	16,332
Loans past due 90 days or more and accruing	1,672	2,709
Total nonperforming loans	114,420	119,434
Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	20,008	18,826
Accruing restructured loans	570	297
Loans past due 90 days or more and accruing	73	229
Total nonperforming loans	20,651	19,352
Construction Real Estate, SEPH Commercial Land and Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	2,077	2,078
Accruing restructured loans	0	0
Loans past due 90 days or more and accruing	0	0
Total nonperforming loans	2,077	2,078
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	5,671	5,558
Accruing restructured loans	54	51
Loans past due 90 days or more and accruing	0	0
Total nonperforming loans	5,725	5,609
Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	89	59
Accruing restructured loans	93	94
Loans past due 90 days or more and accruing	0	9
Total nonperforming loans	182	162
Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	111	115
Accruing restructured loans	121	125
Loans past due 90 days or more and accruing	0	0
Total nonperforming loans	232	240
Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	24,635	24,336
Accruing restructured loans	584	594
Loans past due 90 days or more and accruing	0
Total nonperforming loans	25,219	24,930
Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	21,323	21,869
Accruing restructured loans	10,631	10,349
Loans past due 90 days or more and accruing	719	1,329
Total nonperforming loans	32,673	33,547
Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	1,822	1,879
Accruing restructured loans	780	630
Loans past due 90 days or more and accruing	0	9
Total nonperforming loans	2,602	2,518
Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	1,643	1,743
Accruing restructured loans	708	779
Loans past due 90 days or more and accruing	64
Total nonperforming loans	2,415	2,522
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	14,232	19,299
Accruing restructured loans	2,668	2,690
Loans past due 90 days or more and accruing	0
Total nonperforming loans	16,900	21,989
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	4,262	4,631
Accruing restructured loans	666	723
Loans past due 90 days or more and accruing	816	1,133
Total nonperforming loans	$5,744	$6,487

Loans_Loans_Individually_And_C

Loans (Loans Individually And Collectively Evaluated For Impairment) (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	$5,064	$3,660
Nonaccrual and accruing restructured loans	112,748	116,725
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	70,492	73,712
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	42,256	43,013
Partial Charge-Offs On Impaired Loans	25,792	32,480
Commercial Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	20,578	19,123
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	20,571	19,106
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	7	17
Construction Real Estate, SEPH Commercial Land and Development [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	2,077	2,078
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	2,077	2,078
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	5,725	5,609
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	5,725	5,609
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	0	0
Construction Real Estate - Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	182	153
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	0	0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	182	153
Construction Real Estate - Installment [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	232	240
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	0	0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	232	240
Residential Real Estate - Commercial [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	25,219	24,930
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	25,219	24,930
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	0	0
Residential Real Estate - Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	31,954	32,218
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	0	0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	31,954	32,218
Residential Real Estate - HELOC [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	2,602	2,509
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	0	0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	2,602	2,509
Residential Real Estate - Installment [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	2,351	2,522
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	0	0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	2,351	2,522
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	645	262
Nonaccrual and accruing restructured loans	16,900	21,989
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	16,900	21,989
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	0	0
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0	0
Nonaccrual and accruing restructured loans	4,928	5,354
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	4,928	5,354
Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Partial Charge-Offs On Impaired Loans	$21,600	$32,400

Loans_Loans_Individually_Evalu

Loans (Loans Individually Evaluated For Impairment By Class Of Loans) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	$96,235	$106,156
Recorded investment	70,492	73,712	105,873
Allowance for loan losses allocated	5,064	3,660
Commercial Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	20,571		19,835
Commercial Financial And Agricultural [Member] | Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	25,671	30,601
Recorded investment	17,301	17,883
Allowance for loan losses allocated	0	0
Commercial Financial And Agricultural [Member] | Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	7,444	1,251
Recorded investment	3,270	1,223
Allowance for loan losses allocated	1,839	981
Construction Real Estate, SEPH Commercial Land and Development [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	2,077		4,102
Construction Real Estate, SEPH Commercial Land and Development [Member] | Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	10,861	11,026
Recorded investment	2,077	2,078
Allowance for loan losses allocated	0	0
Construction Real Estate, SEPH Commercial Land and Development [Member] | Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	0
Recorded investment	0
Allowance for loan losses allocated	0	0
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	5,725		10,530
Construction Real Estate - Remaining Commercial [Member] | Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	1,432	1,427
Recorded investment	444	391
Allowance for loan losses allocated	0	0
Construction Real Estate - Remaining Commercial [Member] | Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	5,281	5,218
Recorded investment	5,281	5,218
Allowance for loan losses allocated	2,157	1,812
Residential Real Estate - Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	25,219		31,213
Residential Real Estate - Commercial [Member] | Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	25,770	25,822
Recorded investment	23,852	23,352
Allowance for loan losses allocated	0	0
Residential Real Estate - Commercial [Member] | Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	1,394	1,578
Recorded investment	1,367	1,578
Allowance for loan losses allocated	423	605
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	16,900		39,395
Commercial Real Estate [Member] | Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	16,963	27,923
Recorded investment	15,513	20,696
Allowance for loan losses allocated	0	0
Commercial Real Estate [Member] | Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	1,419	1,310
Recorded investment	1,387	1,293
Allowance for loan losses allocated	645	262
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment			798
Consumer [Member] | Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Allowance for loan losses allocated	0	0
Consumer [Member] | Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	0	0
Recorded investment	0	0
Allowance for loan losses allocated	$0	$0

Loans_Average_Recorded_Investm

Loans (Average Recorded Investment And Interest Income Recognized On Loans Individually Evaluated For Impairment) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Recorded investment	$70,492	$105,873	$73,712
Average recorded investment	72,000	107,878
Interest income recognized	562	680
Commercial Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	20,571	19,835
Average recorded investment	19,876	20,140
Interest income recognized	131	61
Construction Real Estate, SEPH Commercial Land and Development [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	2,077	4,102
Average recorded investment	2,077	4,464
Interest income recognized	8	56
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	5,725	10,530
Average recorded investment	5,697	10,379
Interest income recognized	5	47
Residential Real Estate - Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	25,219	31,213
Average recorded investment	25,373	31,101
Interest income recognized	255	263
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	16,900	39,395
Average recorded investment	18,977	40,995
Interest income recognized	163	253
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment		798
Average recorded investment		799
Interest income recognized	$0	$0

Loans_Aging_Of_Recorded_Invest

Loans (Aging Of Recorded Investment In Past Due Loans) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014	Dec. 31, 2014
	contracts		contracts
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	106		92
Accruing loans past due 30-89 days	$23,705			$31,074
Past due nonaccrual loans and loans past due 90 days or more and accruing	41,965	[1]		52,932	[2]
Total loans past due	65,670			84,006
Total current	4,778,826			4,759,305
Recorded Investment	4,844,496			4,843,311
Loans past due 90 days or more and accruing	1,672			2,709
Financing Receivable, Modifications, Recorded Investment, During Period	4,170		2,033
Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	13		5
Accruing loans past due 30-89 days	5,331			6,482
Past due nonaccrual loans and loans past due 90 days or more and accruing	6,019	[1]		7,508	[2]
Total loans past due	11,350			13,990
Total current	836,248			845,763
Loans past due 90 days or more and accruing	73			229
Financing Receivable, Modifications, Recorded Investment, During Period	995		60
Construction Real Estate, SEPH Commercial Land and Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing loans past due 30-89 days	0
Past due nonaccrual loans and loans past due 90 days or more and accruing	2,069	[1]		2,068	[2]
Total loans past due	2,069			2,068
Total current	114			127
Recorded Investment	2,183	[3]		2,195	[3]
Loans past due 90 days or more and accruing	0			0
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	0		0
Accruing loans past due 30-89 days	163			166
Past due nonaccrual loans and loans past due 90 days or more and accruing	75	[1]		77	[2]
Total loans past due	238			243
Total current	109,875			115,196
Recorded Investment	110,113			115,439
Loans past due 90 days or more and accruing	0			0
Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	1		0
Accruing loans past due 30-89 days	108			39
Past due nonaccrual loans and loans past due 90 days or more and accruing	68	[1]		68	[2]
Total loans past due	176			107
Total current	30,791			31,113
Recorded Investment	30,967			31,220
Loans past due 90 days or more and accruing	0			9
Financing Receivable, Modifications, Recorded Investment, During Period	21
Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	0		0
Accruing loans past due 30-89 days	116			21
Past due nonaccrual loans and loans past due 90 days or more and accruing	6	[1]		25	[2]
Total loans past due	122			46
Total current	6,791			7,299
Recorded Investment	6,913			7,345
Loans past due 90 days or more and accruing	0			0
Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	3		2
Accruing loans past due 30-89 days	447			250
Past due nonaccrual loans and loans past due 90 days or more and accruing	19,015	[1]		19,592	[2]
Total loans past due	19,462			19,842
Total current	394,296			398,808
Recorded Investment	413,758			418,650
Loans past due 90 days or more and accruing	0
Financing Receivable, Modifications, Recorded Investment, During Period	513		68
Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	7		7
Accruing loans past due 30-89 days	8,985			11,146
Past due nonaccrual loans and loans past due 90 days or more and accruing	9,176	[1]		10,637	[2]
Total loans past due	18,161			21,783
Total current	1,180,706			1,169,474
Recorded Investment	1,198,867			1,191,257
Loans past due 90 days or more and accruing	719			1,329
Financing Receivable, Modifications, Recorded Investment, During Period	534		659
Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	10		0
Accruing loans past due 30-89 days	490			262
Past due nonaccrual loans and loans past due 90 days or more and accruing	132	[1]		387	[2]
Total loans past due	622			649
Total current	213,792			217,069
Recorded Investment	214,414			217,718
Loans past due 90 days or more and accruing	0			9
Financing Receivable, Modifications, Recorded Investment, During Period	301		0
Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing loans past due 30-89 days	202			596
Past due nonaccrual loans and loans past due 90 days or more and accruing	454	[1]		464	[2]
Total loans past due	656			1,060
Total current	25,320			26,176
Recorded Investment	25,976			27,236
Loans past due 90 days or more and accruing	64
Financing Receivable, Modifications, Recorded Investment, During Period			72
SEPH Commercial Land and Development [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	0		0
Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	847,598	[3]		859,753	[3]
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	6		3
Accruing loans past due 30-89 days	317			808
Past due nonaccrual loans and loans past due 90 days or more and accruing	1,818	[1]		8,288	[2]
Total loans past due	2,135			9,096
Total current	1,072,659			1,064,087
Recorded Investment	1,074,794	[3]		1,073,183	[3]
Loans past due 90 days or more and accruing	0
Financing Receivable, Modifications, Recorded Investment, During Period	1,314		684
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	66		71
Accruing loans past due 30-89 days	7,546			11,304
Past due nonaccrual loans and loans past due 90 days or more and accruing	3,133	[1]		3,818	[2]
Total loans past due	10,679			15,122
Total current	904,992			881,005
Recorded Investment	915,671			896,127
Loans past due 90 days or more and accruing	816			1,133
Financing Receivable, Modifications, Recorded Investment, During Period	492		490
Leases [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing loans past due 30-89 days	0			0
Past due nonaccrual loans and loans past due 90 days or more and accruing	0	[1]		0	[2]
Total loans past due	0			0
Total current	3,242			3,188
Recorded Investment	3,242			3,188
Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	0		4
Accruing Financing Receivable Modifications [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	948		743
Accruing Financing Receivable Modifications [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	398
Accruing Financing Receivable Modifications [Member] | Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	0		0
Accruing Financing Receivable Modifications [Member] | Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	0		0
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	328		164
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	193		0
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period			36
Accruing Financing Receivable Modifications [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period			161
Accruing Financing Receivable Modifications [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	29		382
Nonaccruing Financing Receivable Modifications [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	3,222		1,290
Nonaccruing Financing Receivable Modifications [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	597		60
Nonaccruing Financing Receivable Modifications [Member] | Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	21
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	513		68
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	206		495
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	108		0
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period			36
Nonaccruing Financing Receivable Modifications [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	1,314		523
Nonaccruing Financing Receivable Modifications [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	$463		$108
[1]	Includes $1.7 million of loans past due 90 days or more and accruing. The remaining are past due, nonaccrual loans and accruing troubled debt restructurings.
[2]	* Includes $2.7 million of loans past due 90 days or more and accruing. The remaining are past due, nonaccrual loans and accruing troubled debt restructurings.
[3]	Included within commercial, financial and agricultural loans, commercial real estate loans, and SEPH commercial land and development loans is an immaterial amount of consumer loans that are not broken out by class.

Loans_Recorded_Investment_By_L

Loans (Recorded Investment By Loan Grade) (Details) (USD $)	Mar. 31, 2015		Dec. 31, 2014
In Thousands, unless otherwise specified
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	$4,844,496		$4,843,311
Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	413,758		418,650
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	1,074,794	[1]	1,073,183	[1]
Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	3,242		3,188
5 Rated [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	21,597		16,252
5 Rated [Member] | Remaining Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	4,006		3,349
5 Rated [Member] | Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	2,185		2,581
5 Rated [Member] | Commercial, Financial, and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	3,017	[2]	1,874	[2]
5 Rated [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	12,389	[2]	8,448	[2]
5 Rated [Member] | Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	0		0
6 Rated [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	2,527		3,568
6 Rated [Member] | SEPH Commercial Land and Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	0	[2]	0	[2]
6 Rated [Member] | Remaining Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment			57
6 Rated [Member] | Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	436		598
6 Rated [Member] | Commercial, Financial, and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	595	[2]	1,201	[2]
6 Rated [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	1,496	[2]	1,712	[2]
6 Rated [Member] | Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	0		0
Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	70,499		73,729
Impaired [Member] | SEPH Commercial Land and Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	2,077	[2]	2,078	[2]
Impaired [Member] | Remaining Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	5,725		5,609
Impaired [Member] | Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	25,219		24,930
Impaired [Member] | Commercial, Financial, and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	20,578	[2]	19,123	[2]
Impaired [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	16,900	[2]	21,989	[2]
Impaired [Member] | Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	0		0
Pass Rated [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	2,357,065		2,378,859
Pass Rated [Member] | SEPH Commercial Land and Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	106	[2]	117	[2]
Pass Rated [Member] | Remaining Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	100,382		106,424
Pass Rated [Member] | Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	385,918		390,541
Pass Rated [Member] | Commercial, Financial, and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	823,408	[2]	837,555	[2]
Pass Rated [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	1,044,009	[2]	1,041,034	[2]
Pass Rated [Member] | Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	3,242		3,188
Recorded Investment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	2,451,688		2,472,408
Recorded Investment [Member] | SEPH Commercial Land and Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	2,183	[2]	2,195	[2]
Recorded Investment [Member] | Remaining Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	110,113		115,439
Recorded Investment [Member] | Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	413,758		418,650
Recorded Investment [Member] | Commercial, Financial, and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	847,598	[2]	859,753	[2]
Recorded Investment [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	1,074,794	[2]	1,073,183	[2]
Recorded Investment [Member] | Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	$3,242		$3,188
[1]	Included within commercial, financial and agricultural loans, commercial real estate loans, and SEPH commercial land and development loans is an immaterial amount of consumer loans that are not broken out by class.
[2]	* Included within commercial, financial and agricultural loans, commercial real estate loans, and SEPH commercial land and development loans is an immaterial amount of consumer loans that are not broken out by class.

Loans_TDR_Number_Of_Contracts_

Loans (TDR Number Of Contracts Modified And Recorded Investment) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
	contracts	contracts
Financing Receivable, Recorded Investment [Line Items]
Troubled Debt Restructuring, Classification removed		$966
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period	64	88
Number of Contracts	106	92
Total Recorded Investment	4,170	2,033
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	1,116	2,860
Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts	1	0
Total Recorded Investment	21
Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period	3	7
Number of Contracts	13	5
Total Recorded Investment	995	60
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	70	89
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period	0	0
Number of Contracts	0	0
Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period	0	2
Number of Contracts	3	2
Total Recorded Investment	513	68
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period		302
Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period	13	19
Number of Contracts	7	7
Total Recorded Investment	534	659
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	689	1,144
Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts	0	0
Residential Real Estate Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment		72
SEPH Commercial Land and Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period	0	0
Number of Contracts	0	0
Residential Real Estate Home Equity Line Of Credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period	0	0
Number of Contracts	10	0
Total Recorded Investment	301	0
Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period	47	49
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	349	345
Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	0	0
Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	0	0
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period	0	5
Number of Contracts	6	3
Total Recorded Investment	1,314	684
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period		872
Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period	1	6
Number of Contracts	0	4
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	8	108
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts	66	71
Total Recorded Investment	492	490
Finance Leases Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts, During Period	0	0
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	0	0
Accruing [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	948	743
Accruing [Member] | Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	0	0
Accruing [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	398
Accruing [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	328	164
Accruing [Member] | Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	0	0
Accruing [Member] | Residential Real Estate Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment		36
Accruing [Member] | Residential Real Estate Home Equity Line Of Credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	193	0
Accruing [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment		161
Accruing [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	29	382
Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	3,222	1,290
Nonaccrual [Member] | Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	21
Nonaccrual [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	597	60
Nonaccrual [Member] | Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	513	68
Nonaccrual [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	206	495
Nonaccrual [Member] | Residential Real Estate Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment		36
Nonaccrual [Member] | Residential Real Estate Home Equity Line Of Credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	108	0
Nonaccrual [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	1,314	523
Nonaccrual [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	$463	$108

Loans_Recorded_Investment_In_F

Loans (Recorded Investment In Financing Receivable Modified As TDR Within 12 Months) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
	contracts	contracts
Financing Receivable, Recorded Investment [Line Items]
Troubled Debt Restructuring, Classification removed		$966,000
Financing Receivable, Modifications, Number of Contracts, During Period	106	92
Number of Contracts	64	88
Recorded Investment	1,116,000	2,860,000
Financing Receivable, Modifications, Recorded Investment, During Period	4,170,000	2,033,000
Troubled Debt Restructuring Included In Nonaccrual Loans	42,600,000		47,500,000
Nonaccrual Trouble Debt Restructuring Current	18,100,000		15,700,000
Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	0	0
Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	13	5
Number of Contracts	3	7
Recorded Investment	70,000	89,000
Financing Receivable, Modifications, Recorded Investment, During Period	995,000	60,000
SEPH Commercial Land and Development [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	0	0
Number of Contracts	0	0
Construction Real Estate - Remaining Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	0	0
Number of Contracts	0	0
Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	3	2
Number of Contracts	0	2
Recorded Investment		302,000
Financing Receivable, Modifications, Recorded Investment, During Period	513,000	68,000
Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	7	7
Number of Contracts	13	19
Recorded Investment	689,000	1,144,000
Financing Receivable, Modifications, Recorded Investment, During Period	534,000	659,000
Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	10	0
Number of Contracts	0	0
Financing Receivable, Modifications, Recorded Investment, During Period	301,000	0
Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	1	0
Financing Receivable, Modifications, Recorded Investment, During Period	21,000
Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		72,000
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	66	71
Financing Receivable, Modifications, Recorded Investment, During Period	492,000	490,000
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	6	3
Number of Contracts	0	5
Recorded Investment		872,000
Financing Receivable, Modifications, Recorded Investment, During Period	1,314,000	684,000
Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts	0	0
Recorded Investment	0	0
Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts	0	0
Recorded Investment	0	0
Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Number of Contracts, During Period	0	4
Number of Contracts	1	6
Recorded Investment	8,000	108,000
Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts	47	49
Recorded Investment	349,000	345,000
Finance Leases Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts	0	0
Recorded Investment	0	0
Accruing Financing Receivable Modifications [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	948,000	743,000
Accruing Financing Receivable Modifications [Member] | Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	0	0
Accruing Financing Receivable Modifications [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	398,000
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	328,000	164,000
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	193,000	0
Accruing Financing Receivable Modifications [Member] | Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	0	0
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		36,000
Accruing Financing Receivable Modifications [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	29,000	382,000
Accruing Financing Receivable Modifications [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		161,000
Nonaccruing Financing Receivable Modifications [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	3,222,000	1,290,000
Nonaccruing Financing Receivable Modifications [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	597,000	60,000
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	513,000	68,000
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	206,000	495,000
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	108,000	0
Nonaccruing Financing Receivable Modifications [Member] | Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	21,000
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		36,000
Nonaccruing Financing Receivable Modifications [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	463,000	108,000
Nonaccruing Financing Receivable Modifications [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	$1,314,000	$523,000

Allowance_For_Loan_Losses_Acti

Allowance For Loan Losses (Activity In The Allowance For Loan Losses) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$54,352	$59,468
Charge-offs	3,418	3,827
Recoveries	2,842	6,841
Net Charge-offs	576	-3,014
Provision	1,632	-2,225
Ending balance	55,408	60,257
Commercial Financial And Agricultural [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	10,719	14,218
Charge-offs	352	639
Recoveries	291	247
Net Charge-offs	61	392
Provision	703	-64
Ending balance	11,361	13,762
Commercial Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	8,808	15,899
Charge-offs	130	794
Recoveries	674	1,558
Net Charge-offs	-544	-764
Provision	-56	-909
Ending balance	9,296	15,754
Construction Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	8,652	6,855
Charge-offs	0	8
Recoveries	285	794
Net Charge-offs	-285	-786
Provision	-182	480
Ending balance	8,755	8,121
Residential Real Estate [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	14,772	14,251
Charge-offs	422	591
Recoveries	924	1,227
Net Charge-offs	-502	-636
Provision	-762	-680
Ending balance	14,512	14,207
Consumer [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	11,401	8,245
Charge-offs	2,514	1,795
Recoveries	666	3,014
Net Charge-offs	1,848	-1,219
Provision	1,931	-1,051
Ending balance	11,484	8,413
Leases [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	0	0
Charge-offs	0	0
Recoveries	2	1
Net Charge-offs	-2	-1
Provision	-2	-1
Ending balance	$0	$0

Allowance_For_Loan_Losses_Comp

Allowance For Loan Losses (Composition Of The Allowance For Loan Losses) (Details) (USD $)	Mar. 31, 2015		Dec. 31, 2014
In Thousands, unless otherwise specified
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment	$5,064		$3,660
Allowance for loan losses collectively evaluated for impairment	50,344		50,692
Total ending allowance balance	55,408		54,352
Loans individually evaluated for impairment	70,461		73,676
Loans collectively evaluated for impairment	4,760,369		4,756,006
Total ending loan balance, net of accrued interest receivable	4,830,830		4,829,682
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment	7.19%		4.97%
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment	1.06%		1.07%
Total ending allowance for loan losses balance as a percentage of loan balance	1.15%		1.13%
Recorded investment	70,492		73,712
Recorded investment collectively evaluated for impairment	4,774,004		4,769,599
Recorded Investment	4,844,496		4,843,311
Commercial Financial And Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment	1,839		981
Allowance for loan losses collectively evaluated for impairment	9,522		9,738
Total ending allowance balance	11,361		10,719
Loans individually evaluated for impairment	20,570		19,103
Loans collectively evaluated for impairment	823,763		837,432
Total ending loan balance, net of accrued interest receivable	844,333	[1]	856,535	[1]
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment	8.94%		5.14%
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment	1.16%		1.16%
Total ending allowance for loan losses balance as a percentage of loan balance	1.35%		1.25%
Recorded investment	20,571		19,106
Recorded investment collectively evaluated for impairment	827,027		840,647
Recorded Investment	847,598	[1]	859,753	[1]
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment	645		262
Allowance for loan losses collectively evaluated for impairment	8,651		8,546
Total ending allowance balance	9,296		8,808
Loans individually evaluated for impairment	16,892		21,978
Loans collectively evaluated for impairment	1,054,373		1,047,659
Total ending loan balance, net of accrued interest receivable	1,071,265	[1]	1,069,637	[1]
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment	3.82%		1.19%
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment	0.82%		0.82%
Total ending allowance for loan losses balance as a percentage of loan balance	0.87%		0.82%
Recorded investment	16,900		21,989
Recorded investment collectively evaluated for impairment	1,057,894		1,051,194
Recorded Investment	1,074,794	[1]	1,073,183	[1]
Construction Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment	2,157		1,812
Allowance for loan losses collectively evaluated for impairment	6,598		6,840
Total ending allowance balance	8,755		8,652
Loans individually evaluated for impairment	7,802		7,690
Loans collectively evaluated for impairment	141,973		148,114
Total ending loan balance, net of accrued interest receivable	149,775		155,804
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment	27.65%		23.56%
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment	4.65%		4.62%
Total ending allowance for loan losses balance as a percentage of loan balance	5.85%		5.55%
Recorded investment	7,802		7,687
Recorded investment collectively evaluated for impairment	142,374		148,512
Recorded Investment	150,176		156,199
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment	423		605
Allowance for loan losses collectively evaluated for impairment	14,089		14,167
Total ending allowance balance	14,512		14,772
Loans individually evaluated for impairment	25,197		24,905
Loans collectively evaluated for impairment	1,824,208		1,826,470
Total ending loan balance, net of accrued interest receivable	1,849,405		1,851,375
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment	1.68%		2.43%
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment	0.77%		0.78%
Total ending allowance for loan losses balance as a percentage of loan balance	0.78%		0.80%
Recorded investment	25,219		24,930
Recorded investment collectively evaluated for impairment	1,827,796		1,829,931
Recorded Investment	1,853,015		1,854,861
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment	0		0
Allowance for loan losses collectively evaluated for impairment	11,484		11,401
Total ending allowance balance	11,484		11,401
Loans individually evaluated for impairment	0		0
Loans collectively evaluated for impairment	912,854		893,160
Total ending loan balance, net of accrued interest receivable	912,854		893,160
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment	0.00%		0.00%
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment	1.26%		1.28%
Total ending allowance for loan losses balance as a percentage of loan balance	1.26%		1.28%
Recorded investment	0		0
Recorded investment collectively evaluated for impairment	915,671		896,127
Recorded Investment	915,671		896,127
Leases [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment	0		0
Allowance for loan losses collectively evaluated for impairment	0		0
Total ending allowance balance	0		0
Loans individually evaluated for impairment	0		0
Loans collectively evaluated for impairment	3,198		3,171
Total ending loan balance, net of accrued interest receivable	3,198		3,171
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment	0.00%		0.00%
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment	0.00%		0.00%
Total ending allowance for loan losses balance as a percentage of loan balance	0.00%		0.00%
Recorded investment	0		0
Recorded investment collectively evaluated for impairment	3,242		3,188
Recorded Investment	$3,242		$3,188
[1]	Included within commercial, financial and agricultural loans, commercial real estate loans, and SEPH commercial land and development loans is an immaterial amount of consumer loans that are not broken out by class.

Other_Real_Estate_Owned_Detail

Other Real Estate Owned (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Assets Repossessed or Foreclosed, or loans in process of foreclosure [Line Items]
Other Real Estate, Foreclosed Assets, and Repossessed Assets	$26,337	$22,605
Commercial Real Estate [Member]
Schedule of Assets Repossessed or Foreclosed, or loans in process of foreclosure [Line Items]
Other Real Estate, Foreclosed Assets, and Repossessed Assets	10,611	6,352
Construction Real Estate [Member]
Schedule of Assets Repossessed or Foreclosed, or loans in process of foreclosure [Line Items]
Other Real Estate, Foreclosed Assets, and Repossessed Assets	11,078	11,281
Residential Real Estate [Member]
Schedule of Assets Repossessed or Foreclosed, or loans in process of foreclosure [Line Items]
Other Real Estate, Foreclosed Assets, and Repossessed Assets	4,648	4,972
Loans in process of foreclosure	$3,464	$2,807

Earnings_Per_Common_Share_Narr

Earnings Per Common Share (Narrative) (Details)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number	23,025	21,975
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	42,758	13,792
Common Stock [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Treasury Stock, Shares, Acquired	-21,500	-19,500

Earnings_Per_Common_Share_Summ

Earnings Per Common Share (Summary Of Computation Of Basic And Diluted Earnings Per Common Share) (Details) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Income available to common shareholders	$19,044	$19,577
Denominator for basic earnings per share (weighted average common shares outstanding)	15,379,170	15,401,105
Effect of dilutive options and warrants	42,758	13,792
Denominator for diluted earnings per share (weighted average common shares outstanding adjusted for the effect of dilutive options and warrants)	15,421,928	15,414,897
Basic earnings per common share	$1.24	$1.27
Diluted earnings per common share	$1.23	$1.27

Segment_Information_Schedule_O

Segment Information (Schedule Of Operating Results By Segment) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
	segments
Segment Reporting Information [Line Items]
Number of Operating Segments	3
Net interest income	$55,535,000	$54,480,000
Provision for (recovery of) loan losses	1,632,000	-2,225,000
Other income and security gains	18,873,000	16,648,000
Total other expense	45,720,000	45,779,000
Income (loss) before income taxes	27,056,000	27,574,000
Income Tax Expense (Benefit)	8,012,000	7,997,000
Net income	19,044,000	19,577,000
Assets	7,303,999,000	6,809,106,000	7,001,199,000
PNB [Member]
Segment Reporting Information [Line Items]
Net interest income	53,821,000	53,099,000
Provision for (recovery of) loan losses	2,022,000	-140,000
Other income and security gains	18,012,000	15,703,000
Total other expense	41,932,000	40,392,000
Income (loss) before income taxes	27,879,000	28,550,000
Income Tax Expense (Benefit)	8,720,000	8,985,000
Net income	19,159,000	19,565,000
Assets	7,212,490,000	6,700,563,000
GFSC [Member]
Segment Reporting Information [Line Items]
Net interest income	1,692,000	1,978,000
Provision for (recovery of) loan losses	495,000	274,000
Other income and security gains	2,000	1,000
Total other expense	779,000	775,000
Income (loss) before income taxes	420,000	930,000
Income Tax Expense (Benefit)	139,000	326,000
Net income	281,000	604,000
Assets	38,569,000	44,564,000
SEPH [Member]
Segment Reporting Information [Line Items]
Net interest income	-88,000	-195,000
Provision for (recovery of) loan losses	-885,000	-2,359,000
Other income and security gains	760,000	837,000
Total other expense	1,098,000	2,521,000
Income (loss) before income taxes	459,000	480,000
Income Tax Expense (Benefit)	161,000	168,000
Net income	298,000	312,000
Assets	43,513,000	62,715,000
All Other [Member]
Segment Reporting Information [Line Items]
Net interest income	110,000	-402,000
Other income and security gains	99,000	107,000
Total other expense	1,911,000	2,091,000
Income (loss) before income taxes	-1,702,000	-2,386,000
Income Tax Expense (Benefit)	-1,008,000	-1,482,000
Net income	-694,000	-904,000
Assets	$9,427,000	$1,264,000

Mortgage_Loans_Held_For_Sale_D

Mortgage Loans Held For Sale (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Mortgage Loans Held for Sale [Line Items]
Mortgages Held-for-sale, Fair Value Disclosure	$7,987,000	$5,264,000
Disposal Group, Including Discontinued Operation, Mortgage Loans	7,900,000	5,200,000
Gain (Loss) on Sale of Mortgage Loans	122,000	80,000
Commercial Portfolio Segment [Member]
Mortgage Loans Held for Sale [Line Items]
Gain on sale of loans in secondary market	800,000
Loans held for sale - lower of cost or market	$100,000

Investment_Securities_Narrativ

Investment Securities (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Schedule of Investments [Line Items]
Investment Securities average remaining life	4 years 8 months
Available-for-sale Securities and Held-to-maturity Securities	0	0
Other than Temporary Impairment Losses, Investments	$0	$0
Asset backed securities mortgage portfolio, term	15 years
U.S. Treasury And Sponsored Entities Callable Notes [Member]
Schedule of Investments [Line Items]
Available for Sale expected to be called	100,600,000
Available-for-sale securities	$495,200,000
U.S. Treasury And Sponsored Entities Callable Notes [Member] | Minimum [Member]
Schedule of Investments [Line Items]
Available for Sale Securities, Debt Maturities, Term	5 years
U.S. Treasury And Sponsored Entities Callable Notes [Member] | Maximum [Member]
Schedule of Investments [Line Items]
Available for Sale Securities, Debt Maturities, Term	8 years

Investment_Securities_Schedule

Investment Securities (Schedule Of Investment Securities) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Investments [Line Items]
Securities Available-for-Sale, Amortized Cost	$1,251,451	$1,299,980
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	18,605	15,010
Securities Available-for-Sale, Gross Unrealized Holding Losses	4,579	13,075
Securities Available-for-Sale, Total Fair value	1,265,477	1,301,915
Securities Held-to-Maturity, Amortized Cost	133,383	140,562
Securities Held-to-Maturity, Estimated Fair Value	136,418	143,490
Obligations Of U.S. Treasury And Other U.S. Government Sponsored Entities [Member]
Schedule of Investments [Line Items]
Securities Available-for-Sale, Amortized Cost	496,887	546,886
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	570	11
Securities Available-for-Sale, Gross Unrealized Holding Losses	2,286	8,833
Securities Available-for-Sale, Total Fair value	495,171	538,064
U.S. Government Sponsored Entities Asset-Backed Securities [Member]
Schedule of Investments [Line Items]
Securities Available-for-Sale, Amortized Cost	753,444	751,974
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	16,525	13,421
Securities Available-for-Sale, Gross Unrealized Holding Losses	2,293	4,242
Securities Available-for-Sale, Total Fair value	767,676	761,153
Securities Held-to-Maturity, Amortized Cost	133,383	140,562
Securities Held-to-Maturity, Gross Unrecognized Holding Gains	3,118	3,088
Securities Held-to-Maturity, Gross Unrecognized Holding Losses	83	160
Securities Held-to-Maturity, Estimated Fair Value	136,418	143,490
Other Equity Securities [Member]
Schedule of Investments [Line Items]
Securities Available-for-Sale, Amortized Cost	1,120	1,120
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	1,510	1,578
Securities Available-for-Sale, Total Fair value	$2,630	$2,698

Investment_Securities_Schedule1

Investment Securities (Schedule Of Unrealized Loss On Securities) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Investments [Line Items]
Securities Available-for-Sale, Less than 12 months, Fair value	$179,173	$193,189
Securities Available-for-Sale, Less than 12 months, Unrealized losses	827	223
Securities Available-for-Sale, 12 months or longer, Fair value	348,011	558,570
Securities Available-for-Sale, 12 months or longer, Unrealized losses	3,752	12,852
Securities Available-for-Sale, Fair value, Total	527,184	751,759
Securities Available-for-Sale, Unrealized losses, Total	4,579	13,075
Obligations Of U.S. Treasury And Other U.S. Government Sponsored Entities [Member]
Schedule of Investments [Line Items]
Securities Available-for-Sale, Less than 12 months, Fair value	179,173	119,913
Securities Available-for-Sale, Less than 12 months, Unrealized losses	827	87
Securities Available-for-Sale, 12 months or longer, Fair value	215,428	388,140
Securities Available-for-Sale, 12 months or longer, Unrealized losses	1,459	8,746
Securities Available-for-Sale, Fair value, Total	394,601	508,053
Securities Available-for-Sale, Unrealized losses, Total	2,286	8,833
U.S. Government Sponsored Entities Asset-Backed Securities [Member]
Schedule of Investments [Line Items]
Securities Available-for-Sale, Less than 12 months, Fair value		73,276
Securities Available-for-Sale, Less than 12 months, Unrealized losses		136
Securities Available-for-Sale, 12 months or longer, Fair value	132,583	170,430
Securities Available-for-Sale, 12 months or longer, Unrealized losses	2,293	4,106
Securities Available-for-Sale, Fair value, Total	132,583	243,706
Securities Available-for-Sale, Unrealized losses, Total	2,293	4,242
Securities Held-to-Maturity, Less than 12 months, Fair value		8,032
Securities Held-to-Maturity, Less than 12 months, Unrealized losses		148
Securities Held-to-Maturity, 12 months or longer, Fair value	8,028	2,714
Securities Held-to-Maturity, 12 months or longer, Unrealized losses	83	12
Securities Held-to-Maturity, Fair value, Total	8,028	10,746
Securities Held-to-Maturity, Unrealized losses, Total	$83	$160

Investment_Securities_Amortize

Investment Securities (Amortized Cost And Estimated Fair Value Of Investments In Debt Securities By Contractual Maturity) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Investments [Line Items]
Securities Available-for-Sale, Total Fair value	$1,265,477	$1,301,915
Securities Held-to-Maturity, Amortized Cost	133,383	140,562
Securities held-to-maturity, fair value	136,418	143,490
Obligations Of U.S. Treasury And Other U.S. Government Sponsored Entities [Member]
Schedule of Investments [Line Items]
Securities Available-for-Sale, Due one through five years, Amortized cost	100,000
Securities Available-for-Sale, Due one through five years, Fair value	100,568
Available for Sale Securities Debt Maturities After One Through Five Years Weighted Avg Yield	2.11%
Securities Available-for-Sale, Due five through ten years, Amortized cost	396,887
Securities Available-for-Sale, Due five through ten years, Fair value	394,603
Available for Sale Securities Debt Maturities After Five Through Ten Years Weighted Avg Yield	2.43%
Securities Available-for-Sale, Total, Amortized cost	496,887
Securities Available-for-Sale, Total Fair value	495,171	538,064
Available for Sale Securities Weighted Avg Yield	2.36%
U.S. Government Sponsored Entities Asset-Backed Securities [Member]
Schedule of Investments [Line Items]
Securities Available-for-Sale, Total, Amortized cost	753,444
Securities Available-for-Sale, Total Fair value	767,676	761,153
Available for Sale Securities Weighted Avg Yield	2.34%
Securities Held-to-Maturity, Amortized Cost	133,383	140,562
Securities held-to-maturity, fair value	$136,418	$143,490
Held to Maturity Securities weighted avg yield	3.51%

Other_Investment_Securities_Sc

Other Investment Securities (Schedule Of Other Investment Securities) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Schedule of Investments [Line Items]
Federal Home Loan Bank stock	$50,086	$50,086
Federal Reserve Bank stock	8,225	8,225
Other investment securities	$58,311	$58,311

Share_Based_Compensation_Detai

Share Based Compensation (Details) (USD $)	3 Months Ended		12 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense	$259	$103
2013 Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	600,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	534,250
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	23,025	21,975
2014 Awards | Scenario, Forecast [Member] | 2013 Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense			1,100
2015 Awards | Scenario, Forecast [Member] | 2013 Long Term Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Allocated Share-based Compensation Expense			$1,800

Pension_Plan_Components_Of_Net

Pension Plan (Components Of Net Periodic Benefit Expense) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	$1,342,000	$1,083,000
Interest cost	1,174,000	1,144,000
Expected return on plan assets	-2,855,000	-2,717,000
Amortization of prior service cost	4,000	5,000
Recognized net actuarial loss	159,000	0
Benefit expense	-176,000	-485,000
Pension plan contributions	$0	$0

Loan_Servicing_Narrative_Detai

Loan Servicing (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Transfers and Servicing of Financial Assets [Abstract]
Serviced sold mortgage loans	$1,260,000,000	$1,300,000,000	$1,270,000,000
Serviced sold mortgage loans with recourse	6,300,000	9,300,000	7,000,000
Mortgage Loans Sold with Recourse, Reserve	171,000		379,000
Servicing fees included in other service income	$800,000	$900,000

Loan_Servicing_Activity_For_MS

Loan Servicing (Activity For MSRs And Related Valuation Allowance) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Servicing Asset at Amortized Value, Balance [Roll Forward]
Carrying amount, net, beginning of period	$8,613	$9,013
Additions	313	158
Amortization	-392	-393
Changes in valuation inputs & assumptions	-222	0
Carrying amount, net, end of period	8,312	8,778
Valuation Allowance for Impairment of Recognized Servicing Assets [Roll Forward]
Valuation allowance, beginning of period	826	1,031
Changes in valuation allowance	222	0
Valuation allowance, end of period	$1,048	$1,031

Fair_Value_Narrative_Details

Fair Value (Narrative) (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Held-for-sale, Fair Value Disclosure	$7,987,000		$5,264,000
Impaired Financing Receivable, Carrying Value	65,428,000		70,052,000
Discount percentage applied to real estate appraised values	15.00%
Discount percentage applied to lot development appraised values	6.00%
Partial Charge-Offs On Impaired Loans	25,792,000		32,480,000
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	5,064,000		3,660,000
Impaired Financing Receivable, Related Allowance	5,064,000		3,660,000
Impaired loans carried at fair value	9,295,000		16,963,000
Partial Charge-Offs On Impaired Loans carried at Fair Value	13,228,000		19,731,000
Book Value Of Impaired Loans Carried At Fair Value	12,520,000		19,643,000
Impaired Financing Receivable, carried at fair value, related expense	1,000,000	2,200,000
MSR recorded at lower of cost or fair value	8,312,000	8,778,000	8,613,000	9,013,000
Mortgage Servicing Rights Fair Value	4,700,000		2,900,000
Valuation allowance of MSR	1,048,000	1,031,000	826,000	1,031,000
MSRs recorded at cost	3,600,000		5,700,000
Changes due to fair value adjustments	222,000	0
Other Real Estate, Foreclosed Assets, and Repossessed Assets	26,337,000		22,605,000
Percent of OREO held at fair value	37.56%		45.62%
Other Real Estate, Foreclosed Assets, and Repossessed Assets, Fair Value	9,900,000		10,312,000
OREO valuation adjustments	304,000	416,000
Commercial Receivables, excluding Commercial, Financial, and Agricultural [Domain]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Financing Receivable, Related Allowance	3,225,000		2,680,000
Financing Receivable, not collateral dependent [Domain]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Financing Receivable, Related Allowance	1,839,000		980,000
Commercial Real Estate Portfolio Segment [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	645,000		262,000
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired loans carried at fair value			$8,481,000
Sales Comparison Approach Valuation Technique [Member] | Maximum [Member] | Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Inputs, Comparability Adjustments	137.30%		84.00%
Sales Comparison Approach Valuation Technique [Member] | Maximum [Member] | Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Residential [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Inputs, Comparability Adjustments	51.20%		38.30%
Sales Comparison Approach Valuation Technique [Member] | Weighted Average [Member] | Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Inputs, Comparability Adjustments	25.80%		38.80%
Sales Comparison Approach Valuation Technique [Member] | Weighted Average [Member] | Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Residential [Member] | Real Estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Inputs, Comparability Adjustments	10.50%		10.10%
Sales Comparison Approach Valuation Technique [Member] | Minimum [Member] | Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Inputs, Comparability Adjustments	0.00%		0.00%
Sales Comparison Approach Valuation Technique [Member] | Minimum [Member] | Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Residential [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Inputs, Comparability Adjustments	0.00%		0.00%
Cost Approach Valuation Technique [Member] | Maximum [Member] | Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Inputs, Accumulated Depreciation	50.00%		23.00%
Cost Approach Valuation Technique [Member] | Maximum [Member] | Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Residential [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Inputs, Accumulated Depreciation	60.00%
Cost Approach Valuation Technique [Member] | Weighted Average [Member] | Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Inputs, Accumulated Depreciation	37.60%		23.00%
Cost Approach Valuation Technique [Member] | Weighted Average [Member] | Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Residential [Member] | Real Estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Inputs, Accumulated Depreciation	60.00%
Cost Approach Valuation Technique [Member] | Minimum [Member] | Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Inputs, Accumulated Depreciation	23.00%		23.00%
Cost Approach Valuation Technique [Member] | Minimum [Member] | Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Residential [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Inputs, Accumulated Depreciation	60.00%
Bulk Sale Approach Valuation Technique [Member] | Maximum [Member] | Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Inputs, Discount Rate	8.00%
Bulk Sale Approach Valuation Technique [Member] | Weighted Average [Member] | Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Inputs, Discount Rate	8.00%
Bulk Sale Approach Valuation Technique [Member] | Minimum [Member] | Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Inputs, Discount Rate	8.00%

Fair_Value_Assets_And_Liabilit

Fair Value (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage loans held for sale	$7,987	$5,264
Fair Value Swap [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Swap	226	226
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage loans held for sale	7,987	5,264
Mortgage IRLCs	189	70
Fair Value, Measurements, Recurring [Member] | Fair Value [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage loans held for sale	7,987	5,264
Mortgage IRLCs	189	70
Fair Value, Measurements, Recurring [Member] | Obligations Of U.S. Treasury And Other U.S. Government Sponsored Entities [Member] | Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities	495,171	538,064
Fair Value, Measurements, Recurring [Member] | Obligations Of U.S. Treasury And Other U.S. Government Sponsored Entities [Member] | Fair Value [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities	495,171	538,064
Fair Value, Measurements, Recurring [Member] | U.S. Government Sponsored Entities' Asset-Backed Securities [Member] | Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities	767,676	761,153
Fair Value, Measurements, Recurring [Member] | U.S. Government Sponsored Entities' Asset-Backed Securities [Member] | Fair Value [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities	767,676	761,153
Fair Value, Measurements, Recurring [Member] | Other Equity Securities [Member] | Level 1 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities	1,891	1,922
Fair Value, Measurements, Recurring [Member] | Other Equity Securities [Member] | Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities	739	776
Fair Value, Measurements, Recurring [Member] | Other Equity Securities [Member] | Fair Value [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities	2,630	2,698
Fair Value, Measurements, Recurring [Member] | Fair Value Swap [Member] | Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Swap	226	226
Fair Value, Measurements, Recurring [Member] | Fair Value Swap [Member] | Fair Value [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Swap	$226	$226

Fair_Value_Reconciliation_Of_L

Fair Value (Reconciliation Of Level 3 Input For Financial Instruments Measured On Recurring Basis) (Details) (Level 3 [Member], Fair Value, Measurements, Recurring [Member], USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Other Equity Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	$776	$759
Included in earnings - realized	0	0
Included in other comprehensive income	-37	-48
Periodic, sales, issuances and settlements, other	0	0
Periodic settlement of fair value swap	0	0
Balance, ending	739	711
Fair Value Swap [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	-226	-135
Included in earnings - unrealized	0	0
Included in other comprehensive income	0	0
Purchases, sales, issuances and settlements, other	0	0
Periodic settlement of fair value swap	0	0
Balance, End of Period	($226)	($135)

Fair_Value_Fair_Value_Of_Finan

Fair Value (Fair Value Of Financial Instruments) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and money market instruments	$580,485	$237,699
Investment securities	1,401,895	1,445,405
Loans Held-for-sale, Fair Value Disclosure	7,987	5,264
Impaired loans carried at fair value	9,295	16,963
Other loans	4,775,046	4,757,461
Loans receivable, net	4,792,517	4,779,758
Noninterest bearing checking accounts	1,262,442	1,269,296
Interest bearing transactions accounts	1,311,827	1,122,079
Savings accounts	1,558,128	1,325,445
Time deposits	1,392,772	1,422,885
Other	2,700	1,269
Total deposits	5,527,869	5,140,974
Short-term borrowings	239,961	276,980
Long-term debt	778,231	827,500
Subordinated debentures/notes	43,421	42,995
Fair Value Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	226	226
Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest receivable	4,313	4,048
Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest receivable	13,666	13,629
Deposits [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest payable	1,136	1,125
Borrowings [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest payable	1,452	1,426
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and money market instruments	580,485	237,699
Investment securities	1,398,860	1,442,477
Loans Held-for-sale, Fair Value Disclosure	7,987	5,264
Derivative Assets	189	70
Impaired loans carried at fair value	9,295	16,963
Other loans	4,757,951	4,753,033
Loans receivable, net	4,775,422	4,775,330
Noninterest bearing checking accounts	1,262,442	1,269,296
Interest bearing transactions accounts	1,311,827	1,122,079
Savings accounts	1,558,128	1,325,445
Time deposits	1,380,750	1,409,911
Other	2,700	1,269
Total deposits	5,515,847	5,128,000
Short-term borrowings	239,961	276,980
Long-term debt	733,555	786,602
Subordinated debentures/notes	45,000	45,000
Reported Value Measurement [Member] | Fair Value Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	226	226
Reported Value Measurement [Member] | Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest receivable	4,313	4,048
Reported Value Measurement [Member] | Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest receivable	13,666	13,629
Reported Value Measurement [Member] | Deposits [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest payable	1,136	1,125
Reported Value Measurement [Member] | Borrowings [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest payable	1,452	1,426
Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and money market instruments	580,485	237,699
Investment securities	1,891	1,922
Derivative Assets	0	0
Noninterest bearing checking accounts	1,262,442	1,269,296
Interest bearing transactions accounts	1,311,827	1,122,079
Savings accounts	1,558,128	1,325,445
Other	2,700	1,269
Total deposits	4,135,097	3,718,089
Fair Value, Inputs, Level 1 [Member] | Deposits [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest payable	14	14
Fair Value, Inputs, Level 1 [Member] | Borrowings [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest payable	7	3
Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Assets	189	70
Impaired loans carried at fair value		16,963
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	1,399,265	1,442,708
Loans Held-for-sale, Fair Value Disclosure	7,987	5,264
Derivative Assets	189	70
Loans receivable, net	8,176	5,334
Time deposits	1,392,772	1,422,885
Total deposits	1,392,772	1,422,885
Short-term borrowings	239,961	276,980
Long-term debt	778,231	827,500
Subordinated debentures/notes	43,421	42,995
Level 2 [Member] | Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest receivable	4,313	4,048
Level 2 [Member] | Deposits [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest payable	1,122	1,111
Level 2 [Member] | Borrowings [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest payable	1,445	1,423
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	739	775
Derivative Assets	0	0
Impaired loans carried at fair value	9,295	16,963
Other loans	4,775,046	4,757,461
Loans receivable, net	4,784,341	4,774,424
Fair Value, Inputs, Level 3 [Member] | Fair Value Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	226	226
Fair Value, Inputs, Level 3 [Member] | Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Accrued interest receivable	$13,666	$13,629

Fair_Value_Qualitative_informa

Fair Value Qualitative information about Level 3 fair value measurements (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loans Receivable, Fair Value Disclosure	4,792,517	4,779,758
Impaired loans carried at fair value	9,295	16,963
Other Assets, Fair Value Disclosure	4,775,046	4,757,461
Loans Held-for-sale, Fair Value Disclosure	7,987	5,264
Fair Value, Measurements, Nonrecurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loans Receivable, Fair Value Disclosure	9,295	16,963
Other Assets, Fair Value Disclosure	9,893	10,312
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loans Receivable, Fair Value Disclosure	9,295	16,963
Other Assets, Fair Value Disclosure	9,893	10,312
Fair Value, Measurements, Nonrecurring [Member] | Construction Real Estate [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Other Assets, Fair Value Disclosure	6,455	6,473
Fair Value, Measurements, Nonrecurring [Member] | Construction Real Estate [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Other Assets, Fair Value Disclosure	6,455	6,473
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loans Receivable, Fair Value Disclosure	2,163	8,481
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loans Receivable, Fair Value Disclosure	2,163	8,481
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans carried at fair value		8,481
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Minimum [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	0.00%	0.00%
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Minimum [Member] | Bulk Sale Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	8.00%
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Minimum [Member] | Income Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Cap Rate	8.00%	8.00%
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Minimum [Member] | Cost Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Accumulated Depreciation	23.00%	23.00%
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Maximum [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	137.30%	84.00%
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Maximum [Member] | Bulk Sale Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	8.00%
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Maximum [Member] | Income Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Cap Rate	10.30%	9.50%
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Maximum [Member] | Cost Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Accumulated Depreciation	50.00%	23.00%
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Weighted Average [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	25.80%	38.80%
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Weighted Average [Member] | Bulk Sale Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	8.00%
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Weighted Average [Member] | Income Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Cap Rate	9.10%	9.40%
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Weighted Average [Member] | Cost Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Accumulated Depreciation	37.60%	23.00%
Fair Value, Measurements, Nonrecurring [Member] | Construction Real Estate, SEPH Commercial Land and Development [Member] | Loans Receivable [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans carried at fair value		2,078
Fair Value, Measurements, Nonrecurring [Member] | Construction Real Estate, SEPH Commercial Land and Development [Member] | Loans Receivable [Member] | Minimum [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	5.00%	5.00%
Fair Value, Measurements, Nonrecurring [Member] | Construction Real Estate, SEPH Commercial Land and Development [Member] | Loans Receivable [Member] | Minimum [Member] | Bulk Sale Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	10.80%	10.80%
Fair Value, Measurements, Nonrecurring [Member] | Construction Real Estate, SEPH Commercial Land and Development [Member] | Loans Receivable [Member] | Maximum [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	35.00%	35.00%
Fair Value, Measurements, Nonrecurring [Member] | Construction Real Estate, SEPH Commercial Land and Development [Member] | Loans Receivable [Member] | Maximum [Member] | Bulk Sale Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	10.80%	10.80%
Fair Value, Measurements, Nonrecurring [Member] | Construction Real Estate, SEPH Commercial Land and Development [Member] | Loans Receivable [Member] | Weighted Average [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	17.50%	17.50%
Fair Value, Measurements, Nonrecurring [Member] | Construction Real Estate, SEPH Commercial Land and Development [Member] | Loans Receivable [Member] | Weighted Average [Member] | Bulk Sale Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	10.80%	10.80%
Fair Value, Measurements, Nonrecurring [Member] | Construction Real Estate - Remaining Commercial [Member] | Loans Receivable [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans carried at fair value		3,483
Fair Value, Measurements, Nonrecurring [Member] | Construction Real Estate - Remaining Commercial [Member] | Loans Receivable [Member] | Minimum [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	0.20%	0.20%
Fair Value, Measurements, Nonrecurring [Member] | Construction Real Estate - Remaining Commercial [Member] | Loans Receivable [Member] | Minimum [Member] | Bulk Sale Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	10.00%	10.00%
Fair Value, Measurements, Nonrecurring [Member] | Construction Real Estate - Remaining Commercial [Member] | Loans Receivable [Member] | Maximum [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	67.00%	76.00%
Fair Value, Measurements, Nonrecurring [Member] | Construction Real Estate - Remaining Commercial [Member] | Loans Receivable [Member] | Maximum [Member] | Bulk Sale Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	20.00%	22.00%
Fair Value, Measurements, Nonrecurring [Member] | Construction Real Estate - Remaining Commercial [Member] | Loans Receivable [Member] | Weighted Average [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	25.10%	45.40%
Fair Value, Measurements, Nonrecurring [Member] | Construction Real Estate - Remaining Commercial [Member] | Loans Receivable [Member] | Weighted Average [Member] | Bulk Sale Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	10.00%	16.50%
Fair Value, Measurements, Nonrecurring [Member] | Residential Real Estate [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Other Assets, Fair Value Disclosure	2,576	2,369
Fair Value, Measurements, Nonrecurring [Member] | Residential Real Estate [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Other Assets, Fair Value Disclosure	2,576	2,369
Fair Value, Measurements, Nonrecurring [Member] | Residential Real Estate [Member] | Loans Receivable [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans carried at fair value		2,921
Fair Value, Measurements, Nonrecurring [Member] | Residential Real Estate [Member] | Loans Receivable [Member] | Minimum [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	0.00%	0.00%
Fair Value, Measurements, Nonrecurring [Member] | Residential Real Estate [Member] | Loans Receivable [Member] | Minimum [Member] | Income Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Cap Rate	13.00%	7.90%
Fair Value, Measurements, Nonrecurring [Member] | Residential Real Estate [Member] | Loans Receivable [Member] | Maximum [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	83.00%	120.60%
Fair Value, Measurements, Nonrecurring [Member] | Residential Real Estate [Member] | Loans Receivable [Member] | Maximum [Member] | Income Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Cap Rate	13.00%	10.00%
Fair Value, Measurements, Nonrecurring [Member] | Residential Real Estate [Member] | Loans Receivable [Member] | Weighted Average [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	14.10%	11.10%
Fair Value, Measurements, Nonrecurring [Member] | Residential Real Estate [Member] | Loans Receivable [Member] | Weighted Average [Member] | Income Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Cap Rate	13.00%	8.00%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Commercial [Member] | Minimum [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	0.00%	0.00%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Commercial [Member] | Minimum [Member] | Income Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Cap Rate	8.40%	8.40%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Commercial [Member] | Minimum [Member] | Cost Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Accumulated Depreciation	60.00%	60.00%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Commercial [Member] | Maximum [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	60.00%	87.00%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Commercial [Member] | Maximum [Member] | Income Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Cap Rate	8.40%	10.00%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Commercial [Member] | Maximum [Member] | Cost Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Accumulated Depreciation	95.00%	95.00%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Commercial [Member] | Real Estate [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Other Assets, Fair Value Disclosure	862	1,470
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Commercial [Member] | Real Estate [Member] | Weighted Average [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	26.30%	30.50%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Commercial [Member] | Real Estate [Member] | Weighted Average [Member] | Income Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Cap Rate	8.40%	9.40%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Commercial [Member] | Real Estate [Member] | Weighted Average [Member] | Cost Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Accumulated Depreciation	77.50%	77.50%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Construction [Member] | Minimum [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	0.00%	0.00%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Construction [Member] | Minimum [Member] | Bulk Sale Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	15.00%	15.00%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Construction [Member] | Maximum [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	82.90%	82.90%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Construction [Member] | Maximum [Member] | Bulk Sale Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	15.00%	15.00%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Construction [Member] | Real Estate [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Other Assets, Fair Value Disclosure	6,455	6,473
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Construction [Member] | Real Estate [Member] | Weighted Average [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	27.30%	27.10%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Construction [Member] | Real Estate [Member] | Weighted Average [Member] | Bulk Sale Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	15.00%	15.00%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Residential [Member] | Minimum [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	0.00%	0.00%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Residential [Member] | Minimum [Member] | Income Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Cap Rate	6.80%	6.80%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Residential [Member] | Minimum [Member] | Cost Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Accumulated Depreciation	60.00%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Residential [Member] | Maximum [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	51.20%	38.30%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Residential [Member] | Maximum [Member] | Income Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Cap Rate	17.40%	7.80%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Residential [Member] | Maximum [Member] | Cost Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Accumulated Depreciation	60.00%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Residential [Member] | Real Estate [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Other Assets, Fair Value Disclosure	2,576	2,369
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Residential [Member] | Real Estate [Member] | Weighted Average [Member] | Sales Comparison Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Comparability Adjustments	10.50%	10.10%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Residential [Member] | Real Estate [Member] | Weighted Average [Member] | Income Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Cap Rate	8.30%	7.60%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned, Residential [Member] | Real Estate [Member] | Weighted Average [Member] | Cost Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Accumulated Depreciation	60.00%
Construction Real Estate, SEPH Commercial Land and Development [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loans Receivable, Fair Value Disclosure	2,076	2,078
Construction Real Estate, SEPH Commercial Land and Development [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loans Receivable, Fair Value Disclosure	2,076	2,078
Construction Real Estate - Remaining Commercial [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loans Receivable, Fair Value Disclosure	3,199	3,483
Construction Real Estate - Remaining Commercial [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loans Receivable, Fair Value Disclosure	3,199	3,483
Fair Value [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans carried at fair value		16,963
Fair Value [Member] | Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Market and Income Approach Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loans Receivable, Fair Value Disclosure	2,163
Fair Value [Member] | Fair Value, Measurements, Nonrecurring [Member] | Residential Real Estate [Member] | Market Approach Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loans Receivable, Fair Value Disclosure	1,857
Fair Value [Member] | Construction Real Estate, SEPH Commercial Land and Development [Member] | Fair Value, Measurements, Nonrecurring [Member] | Construction Real Estate [Member] | Market Approach Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loans Receivable, Fair Value Disclosure	2,076
Fair Value [Member] | Construction Real Estate - Remaining Commercial [Member] | Fair Value, Measurements, Nonrecurring [Member] | Construction Real Estate [Member] | Market Approach Valuation Technique [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Loans Receivable, Fair Value Disclosure	3,199

Fair_Value_Fair_Value_Assets_a

Fair Value Fair Value (Assets and liabilities measured at fair value on a nonrecurring basis) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	$7,987	$5,264
Loans Receivable, Fair Value Disclosure	4,792,517	4,779,758
Other Assets, Fair Value Disclosure	4,775,046	4,757,461
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	9,295	16,963
Servicing Asset at Fair Value, Amount	4,657	2,928
Other Assets, Fair Value Disclosure	9,893	10,312
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	9,295	16,963
Other Assets, Fair Value Disclosure	9,893	10,312
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset at Fair Value, Amount	4,657	2,928
Commercial Real Estate Portfolio Segment [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	2,163	8,481
Commercial Real Estate Portfolio Segment [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	2,163	8,481
Residential Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Assets, Fair Value Disclosure	2,576	2,369
Residential Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Assets, Fair Value Disclosure	2,576	2,369
Construction Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Assets, Fair Value Disclosure	6,455	6,473
Construction Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Assets, Fair Value Disclosure	6,455	6,473
Commercial Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Assets, Fair Value Disclosure	862	1,470
Commercial Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Assets, Fair Value Disclosure	862	1,470
Residential Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	1,857	2,921
Residential Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	1,857	2,921
Construction Real Estate - Remaining Commercial [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	3,199	3,483
Construction Real Estate - Remaining Commercial [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	3,199	3,483
Construction Real Estate, SEPH Commercial Land and Development [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	2,076	2,078
Construction Real Estate, SEPH Commercial Land and Development [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	2,076	2,078
Reported Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	7,987	5,264
Loans Receivable, Fair Value Disclosure	4,775,422	4,775,330
Other Assets, Fair Value Disclosure	4,757,951	4,753,033
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	4,784,341	4,774,424
Other Assets, Fair Value Disclosure	4,775,046	4,757,461
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	7,987	5,264
Loans Receivable, Fair Value Disclosure	$8,176	$5,334

Fair_Value_Fair_Value_Impaired

Fair Value Fair Value (Impaired Financing Receivables Additional Information) (Details) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Schedule of Impaired Financing Receivables Additional Information [Line Items]
Book Value Of Impaired Loans Carried At Fair Value	$12,520	$19,643
Partial Charge-Offs On Impaired Loans carried at Fair Value	13,228	19,731
Impaired Financing Receivable, Related Allowance	5,064	3,660
impaired Financing Receivable, loans not held at Fair Value, Carrying Amount	56,133	53,089
Impaired Financing Receivable, Recorded Investment	70,492	73,712	105,873
Impaired loans carried at fair value	9,295	16,963
Impaired Financing Receivable, loans not held at Fair Value, Recorded Investment	57,972	54,069
Partial Charge-offs on Impaired Loans carried at Cost	12,564	12,749
Impaired Financing Receivable, Carrying Value	65,428	70,052
Partial Charge-Offs On Impaired Loans	25,792	32,480
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	5,064	3,660
Financing Receivable, not collateral dependent [Domain]
Schedule of Impaired Financing Receivables Additional Information [Line Items]
Impaired Financing Receivable, Related Allowance	1,839	980
Commercial Receivables, excluding Commercial, Financial, and Agricultural [Domain]
Schedule of Impaired Financing Receivables Additional Information [Line Items]
Impaired Financing Receivable, Related Allowance	$3,225	$2,680

Other_Comprehensive_Income_Los2

Other Comprehensive Income (Loss) (Component Of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other comprehensive income before reclassifications	$7,859	$10,941
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	0	0
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, before Tax	0	0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	0	0
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax	7,859	10,941
Other comprehensive income (loss)	7,859	10,941
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, before Reclassification Adjustments, Net of Tax	7,859	10,941
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, before Reclassification Adjustments, Net of Tax		0
Changes in pension plan assets and benefit obligations, Net-of-tax amount	-14,865	-5,598	14,865	5,598
Unrealized gains on available-for-sale securities, Net-of-tax amount	9,116	-18,880	1,257	-29,821
Total accumulated other comprehensive income (loss), Net-of-tax amount	-5,749	-24,478	-13,608	-35,419
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, before Tax	$0

Investment_in_Qualified_Afford2

Investment in Qualified Affordable Housing (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Affordable Housing Program Assessments	$1,700,000
Affordable Housing Program Obligation	14,038,000		16,629,000
Affordable Housing Program Tax Credits	2,300,000	2,200,000
Other Assets [Member] | Scenario, Previously Reported [Member] | Investment, Name [Domain]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description			140803
Other Assets [Member] | Restatement Adjustment [Member] | Investment, Name [Domain]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description			138746
Retained Earnings [Member] | Scenario, Previously Reported [Member] | Investment, Name [Domain]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description			486541
Retained Earnings [Member] | Restatement Adjustment [Member] | Investment, Name [Domain]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description			484484
Assets [Member] | Scenario, Previously Reported [Member] | Investment, Name [Domain]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description			7003256
Assets [Member] | Restatement Adjustment [Member] | Investment, Name [Domain]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description			7001199
Equity [Member] | Scenario, Previously Reported [Member] | Investment, Name [Domain]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description			698598
Equity [Member] | Restatement Adjustment [Member] | Investment, Name [Domain]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description			696541
Qualified Affordable Housing [Domain]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Equity Method Investments	$47,184,000		48,911,000
Other Income [Member] | Scenario, Previously Reported [Member] | Investment, Name [Domain]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description		47698	195234
Other Income [Member] | Restatement Adjustment [Member] | Investment, Name [Domain]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description		45779	187510
Income Tax Expense [Member] | Scenario, Previously Reported [Member] | Investment, Name [Domain]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description		6036	28602
Income Tax Expense [Member] | Restatement Adjustment [Member] | Investment, Name [Domain]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description		7997	36459
Net Income [Domain] | Scenario, Previously Reported [Member] | Investment, Name [Domain]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description		19619	84090
Net Income [Domain] | Restatement Adjustment [Member] | Investment, Name [Domain]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description		19577	83957

Repurchase_Agreement_Borrowing2

Repurchase Agreement Borrowings (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Nov. 30, 2012
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	$539,961,000	$576,980,000
Pledged Assets Separately Reported, Securities Pledged for Repurchase Agreements, at Fair Value	581,000,000	664,000,000
Maturity Overnight [Member]
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	234,438,000	268,427,000
Maturity up to 30 days [Member]
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	26,000	164,000
Maturity 30 to 90 Days [Member]
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	1,878,000	4,940,000
Maturity over 90 days [Member]
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	303,619,000	303,449,000
Broker Repurchase Agreements [Member]
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]
Debt Instrument, Repurchase Amount			300,000,000
Long-term Debt, Prepayment Penalty	25,000,000
Payments of Debt Extinguishment Costs, Unamortized Balance	$13,600,000	$14,800,000

Uncategorized_Items

Uncategorized Items	12/31/13	12/31/14
	USD ($)	USD ($)
[us-gaap_NewAccountingPronouncementOrChangeInAccountingPrincipleCumulativeEffectOfChangeOnEquityOrNetAssets1]	-1,924,000	-2,057,000
[us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1]			-35,419,000	302,651,000	0	458,719,000	-76,128,000	-13,608,000	303,104,000	0	484,484,000	-77,439,000