Park National (PRK) 10-Q 4 Nov 19 2019 Q3 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2019	Nov. 01, 2019
Document Information [Line Items]
Document Transition Report	false
Document Quarterly Report	true
Title of 12(b) Security	Common shares, without par value
Security Exchange Name	NYSEAMER
City Area Code	(740)
Entity Address, Address Line One	50 North Third Street,
Entity File Number	1-13006
Entity Address, State or Province	OH
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2019
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Entity Registrant Name	PARK NATIONAL CORPORATION
Entity Central Index Key	0000805676
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		16,346,446
Trading Symbol	PRK
Entity Tax Identification Number	31-1179518
Entity Address, Address Line Two	P.O. Box 3500
Entity Address, City or Town	Newark,
Entity Address, State or Province	OH
Entity Address, Postal Zip Code	43058-3500
Local Phone Number	349-8451

Consolidated Condensed Balance

Consolidated Condensed Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets:
Cash and due from banks	$ 190,353	$ 141,890
Money market instruments	182,373	25,324
Cash and cash equivalents	372,726	167,214
Investment securities:
Debt Securities, Available-for-sale, Current	1,260,286	1,003,421
Debt securities held-to-maturity, at amortized cost (fair value of $351,422 at December 31, 2018)		351,808
Other Investments and Securities, at Cost	68,644	72,916
Alternative Investment	15,989	17,065
Total investment securities	1,328,930	1,428,145
Loan balance	6,403,647	5,692,132
Allowance for loan losses	(55,853)	(51,512)
Net loans	6,347,794	5,640,620
Bank owned life insurance	208,594	188,417
Prepaid assets	99,939	94,079
Goodwill	157,999	112,739
Other intangible assets	15,490	6,971
Intangible Assets, Net (Including Goodwill)	173,489	119,710
Premises and equipment, net	72,779	59,771
Affordable housing tax credit investments	54,909	50,347
Other real estate owned	3,779	4,303
Interest Receivable	24,721	22,974
Operating Lease, Right-of-Use Asset	14,412	0
Mortgage loan servicing rights	9,960	10,178
Other	11,578	18,550
Total assets	8,723,610	7,804,308
Liabilities and Shareholders' Equity:
Noninterest bearing	1,941,694	1,804,881
Interest bearing	5,226,565	4,455,979
Total deposits	7,168,259	6,260,860
Short-term borrowings	185,838	221,966
Long-term debt	297,500	400,000
Subordinated debentures and notes	15,000	15,000
Unfunded commitments in affordable housing tax credit investments	28,439	22,282
Operating Lease, Liability	15,191	0
Accrued interest payable	3,254	2,625
Other	53,989	49,069
Total liabilities	7,767,470	6,971,802
Shareholders' equity:
Preferred shares (200,000 shares authorized; 0 shares issued)	0	0
Common shares (No par value; 20,000,000 shares authorized; 17,623,208 shares issued at September 30, 2019 and 16,586,165 shares issued at December 31, 2018)	458,142	358,598
Retained earnings	639,594	614,069
Treasury shares (1,290,257 shares at September 30, 2019 and 887,987 shares at December 31, 2018)	(128,982)	(90,373)
Accumulated other comprehensive loss, net of taxes	(12,614)	(49,788)
Total shareholders' equity	956,140	832,506
Total liabilities and shareholders' equity	$ 8,723,610	$ 7,804,308

Consolidated Condensed Balanc_2

Consolidated Condensed Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale, Amortized Cost	$ 1,237,990	$ 1,028,883
Securities held-to-maturity, fair value		$ 351,422
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	17,623,208	16,586,165
Treasury stock shares	1,290,257	887,987

Consolidated Condensed Statemen

Consolidated Condensed Statements Of Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Interest and dividend income:
Interest and fees on loans	$ 84,213	$ 69,905	$ 238,687	$ 198,803
Interest and dividends on:
Obligations of U.S. Government, its agencies and other securities	6,326	7,691	20,240	22,204
Interest Income, Securities, State and Municipal	2,225	2,205	6,750	6,557
Other interest income	1,825	428	2,994	1,070
Total interest and dividend income	94,589	80,229	268,671	228,634
Interest on deposits:
Demand and savings deposits	9,649	6,412	25,553	13,809
Time deposits	4,694	3,328	12,828	8,765
Interest on borrowings:
Short-term borrowings	478	288	1,977	1,283
Long-term debt	2,667	2,525	7,585	7,509
Total interest expense	17,488	12,553	47,943	31,366
Net interest income	77,101	67,676	220,728	197,268
Provision for loan losses	1,967	2,940	6,384	4,586
Net interest income after provision for loan losses	75,134	64,736	214,344	192,682
Noninterest Income [Abstract]
Debit card fee income	5,313	4,352	14,909	12,736
Bank owned life insurance income	1,107	2,585	3,399	4,625
ATM Fees	482	500	1,382	1,534
OREO valuation adjustments	(41)	(77)	(123)	(398)
Gain on sale of OREO, net	(53)	(81)	(224)	4,093
Gain (Loss) on Sale of Investments	186	0	(421)	(2,271)
Gain on equity securities, net	3,335	89	5,309	4,633
Other components of net periodic benefit income	1,183	1,705	3,549	5,115
Other	2,658	2,466	5,493	5,164
Total other income	28,136	24,064	72,969	74,209
Other expense:
Salaries and employee benefits	30,713	27,229	88,611	76,652
Employee Benefits and Share-based Compensation	10,389	7,653	27,833	22,312
Occupancy expense	3,226	2,976	9,460	8,482
Furniture and equipment expense	4,177	3,807	12,713	11,969
Data processing fees	2,935	2,580	7,973	6,255
Professional fees and services	6,702	8,065	22,814	20,378
Marketing	1,604	1,364	4,285	3,767
Insurance	276	1,388	2,813	4,012
Communication	1,387	1,207	4,095	3,646
Excise and Sales Taxes	746	1,000	2,805	3,063
Amortization of Intangible Assets	741	289	1,732	289
Other expense	2,842	1,758	7,623	5,333
Total other expense	65,738	59,316	192,757	166,158
Income before income taxes	37,532	29,484	94,556	100,733
Income taxes	6,386	4,722	15,792	16,607
Net income	31,146	24,762	78,764	84,126
Net income available to common shareholders	$ 31,146	$ 24,762	$ 78,764	$ 84,126
Net income available to common shareholders
Basic	$ 1.90	$ 1.58	$ 4.86	$ 5.46
Diluted	$ 1.89	$ 1.56	$ 4.84	$ 5.41
Weighted average common shares outstanding
Basic	16,382,798	15,686,542	16,198,294	15,420,135
Diluted	16,475,741	15,832,734	16,287,695	15,560,666
Cash dividends declared	$ 1.01	$ 0.96	$ 3.23	$ 3.11
Fiduciary and Trust [Member]
Noninterest Income [Abstract]
Revenue from Contract with Customer, Including Assessed Tax	$ 6,842	$ 6,418	$ 20,500	$ 19,479
Deposit Account [Member]
Noninterest Income [Abstract]
Revenue from Contract with Customer, Including Assessed Tax	2,864	2,861	8,078	8,609
Bank Servicing [Member]
Noninterest Income [Abstract]
Revenue from Contract with Customer, Including Assessed Tax	$ 4,260	$ 3,246	$ 11,118	$ 10,890

Consolidated Condensed Statem_2

Consolidated Condensed Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Net Income	$ 31,146	$ 24,762	$ 78,764	$ 84,126
Other comprehensive income, net of tax:
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	(147)	0	333	2,024
Other Comprehensive Income (Loss), Transfers from Held-to-maturity to Available-for-Sale Securities, Net of Tax	19,095	0	19,095	0
Unrealized net holding (loss) gain on debt securities available-for-sale, net of income tax effect of $(1,385) and $(1,364) for the three months ended September 30, 2019 and 2018, respectively and $4,864 and $(8,217) for the nine months ended September 30, 2019 and 2018, respectively	(5,206)	(5,141)	18,302	(30,919)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax	(49)	0	(556)	0
Other comprehensive income (loss)	13,693	(5,141)	37,174	(28,895)
Comprehensive income	44,839	19,621	$ 115,938	$ 55,231
Accumulated Other Comprehensive Income (loss) [Member]
Other comprehensive income, net of tax:
Other comprehensive income (loss)	$ 13,693	$ (5,141)

Consolidated Condensed Statem_3

Consolidated Condensed Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, Tax	$ (1,385)	$ (1,364)	$ 4,864	$ (8,217)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	(39)		88	538
Other Comprehensive Income (Loss), Transfers from Held-to-maturity to Available-for-Sale Securities, Tax	5,076	0	5,076	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax	$ (13)	$ 0	$ (148)	$ 0

Consolidated Condensed Statem_4

Consolidated Condensed Statements Of Changes In Stockholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Retained Earnings [Member]	Treasury Stock At Cost [Member]	Accumulated Other Comprehensive Income (loss) [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption | Adjustments for New Accounting Pronouncement [Member]				$ 3,806		$ (3,806)
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	$ 995					3,806
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets | Accounting Standards Update 2016-01 [Member]				(1,917)		995
Balance at Dec. 31, 2017		$ 0	$ 307,726	561,908	$ (87,079)	(26,454)
Balance (Accounting Standards Update 2016-01 [Member]) at Dec. 31, 2017		0	307,726	563,825	(87,079)	(27,449)
Net Income				31,123
Other comprehensive income (loss)						(21,386)
Dividends on common shares				(14,496)
Cash payment for fractional shares in dividend reinvestment plan			(1)
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures			(1,597)	(317)	(1,304)
Share-based Payment Arrangement, Expense			1,121
Balance at Mar. 31, 2018		0	307,249	583,941	(85,775)	(52,641)
Balance at Dec. 31, 2017		0	307,726	561,908	(87,079)	(26,454)
Balance (Accounting Standards Update 2016-01 [Member]) at Dec. 31, 2017		0	307,726	563,825	(87,079)	(27,449)
Net Income	84,126
Other comprehensive income (loss)	(28,895)
Share-based Payment Arrangement, Expense	3,100
Balance at Sep. 30, 2018		0	357,709	603,091	(91,559)	(60,150)
Balance at Mar. 31, 2018		0	307,249	583,941	(85,775)	(52,641)
Net Income				28,241
Other comprehensive income (loss)						(2,368)
Dividends on common shares				(18,670)
Cash payment for fractional shares in dividend reinvestment plan			(1)
Share-based Payment Arrangement, Expense			896
Treasury Stock, Value, Acquired, Cost Method					5,784
Balance at Jun. 30, 2018		0	308,144	593,512	(91,559)	(55,009)
Net Income	24,762			24,762
Other comprehensive income (loss)	(5,141)					(5,141)
Dividends on common shares				(15,183)
Cash payment for fractional shares in dividend reinvestment plan			(1)
Share-based Payment Arrangement, Expense	1,000		1,047
Proceeds from Issuance of Common Stock			48,519
Balance at Sep. 30, 2018		0	357,709	603,091	(91,559)	(60,150)
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets				143
Balance at Dec. 31, 2018	832,506	0	358,598	614,069	(90,373)	(49,788)
Balance (Adjustments for New Accounting Pronouncement [Member]) at Dec. 31, 2018				613,926
Net Income				25,455
Other comprehensive income (loss)						14,335
Dividends on common shares				(19,137)
Cash payment for fractional shares in dividend reinvestment plan			(1)
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures			(2,480)	(273)	(1,926)
Share-based Payment Arrangement, Expense			1,358
Treasury Stock, Value, Acquired, Cost Method					8,502
Balance at Mar. 31, 2019		0	357,475	619,971	(96,949)	(35,453)
Balance at Dec. 31, 2018	832,506	0	358,598	614,069	(90,373)	(49,788)
Balance (Adjustments for New Accounting Pronouncement [Member]) at Dec. 31, 2018				613,926
Net Income	78,764
Other comprehensive income (loss)	37,174
Share-based Payment Arrangement, Expense	3,800
Balance at Sep. 30, 2019	956,140	0	458,142	639,594	(128,982)	(12,614)
Balance at Mar. 31, 2019		0	357,475	619,971	(96,949)	(35,453)
Net Income				22,163
Other comprehensive income (loss)						9,146
Dividends on common shares				(16,907)
Cash payment for fractional shares in dividend reinvestment plan			(1)
Share-based Payment Arrangement, Expense			1,162
Treasury Stock, Value, Acquired, Cost Method					24,450
Proceeds from Issuance of Common Stock			98,275
Balance at Jun. 30, 2019		0	456,911	625,227	(121,399)	(26,307)
Net Income	31,146			31,146
Other comprehensive income (loss)	13,693					13,693
Dividends on common shares				(16,779)
Cash payment for fractional shares in dividend reinvestment plan			(1)
Share-based Payment Arrangement, Expense	1,200		1,232
Treasury Stock, Value, Acquired, Cost Method					7,583
Balance at Sep. 30, 2019	$ 956,140	$ 0	$ 458,142	$ 639,594	$ (128,982)	$ (12,614)

Consolidated Condensed Statem_5

Consolidated Condensed Statements Of Changes In Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Stockholders' Equity [Abstract]
Common Stock, Dividends, Per Share, Cash Paid	$ 1.01	$ 1.01	$ 1.21	$ 0.96	$ 1.21	$ 0.94
Stock Issued During Period, Shares, Acquisitions	0	1,037,205	0	435,457	0	0	1,037,205
Treasury Stock, Shares, Acquired	84,603	250,000	86,650	0	50,000	0
Stock Issued During Period, Shares, Restricted Stock Award, Gross	0	0	27,719	0	0	18,800

Consolidated Condensed Statem_6

Consolidated Condensed Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	$ 6,384	$ 4,586
Amortization of investment securities, net	(5,077)	(4,631)
Depreciation	6,676	6,446
Depreciation of premises and equipment	(2,052)	(6)
Amortization of investment securities, net	1,102	932
Realized net investment securities losses	421	2,271
Gain on equity securities, net	5,309	4,633
Loan originations to be sold in secondary market	(224,314)	(153,093)
Proceeds from sale of loans in secondary market	214,266	154,544
Share-based compensation expense	3,752	3,064
OREO valuation adjustments	123	398
Loss (gain) on sale of OREO, net	224	(4,093)
Bank owned life insurance income	(3,399)	(4,625)
Investment in qualified affordable housing tax credits amortization	5,438	5,553
Changes in assets and liabilities:
Decrease in other assets	5,127	6,594
Increase in other liabilities	1,128	4,536
Net cash provided by operating activities	73,971	96,978
Investing activities:
Payments for (Proceeds from) Federal Home Loan Bank Stock	9,964	7,004
Proceeds from sales of investment securities	91,110	244,399
Proceeds from Sale, Maturity and Collection of Investments [Abstract]
Available-for-sale securities	145,851	151,860
Held-to-maturity securities	475	10,102
Payments to Acquire Investments [Abstract]
Payments to Acquire Debt Securities, Available-for-sale	0	373,372
Payments to Acquire Held-to-maturity Securities	0	(4,946)
Equity securities	0	(2,590)
Payments to Acquire Federal Reserve Bank Stock	(5,180)	0
Increase (Decrease) in Equity Securities, FV-NI	6,145	1,141
Net loan originations, portfolio loans	(112,767)	12,027
Payments for Affordable Housing Programs	(3,843)	0
Proceeds from the sale of OREO	1,098	11,919
Life insurance death benefits	1,344	4,028
Payments to Acquire Businesses, Net of Cash Acquired [Abstract]	(4,831)	12,270
Purchases of premises and equipment	(11,641)	(7,145)
Net cash provided by investing activities	117,725	66,697
Financing activities:
Net increase in deposits	275,207	177,626
Net decrease in short-term borrowings	(64,891)	(211,471)
Proceeds from issuance of long-term debt	50,000	25,000
Repayments of Long-term Debt	(152,500)	(125,000)
Payment, Tax Withholding, Share-based Payment Arrangement	(827)	(610)
Repurchase of common shares to be held as treasury shares	(40,535)	(5,784)
Cash dividends paid	(52,638)	(47,944)
Net cash provided by (used in) financing activities	13,816	(188,183)
Increase in cash and cash equivalents	205,512	(24,508)
Cash and cash equivalents at beginning of year	167,214	169,112
Cash and cash equivalents at end of period	372,726	144,604
Supplemental disclosures of cash flow information:
Cash paid for interest	47,891	30,424
Income Taxes Paid	9,261	5,525
Debt Securities, Held-to-maturity, Transfer, Amount	349,773	0
Non cash activities:
Real Estate Owned, Transfer to Real Estate Owned	951	1,037
Other Significant Noncash Transaction, Value of Consideration Received	11,351	0
Other repossessed assets, transfer to repossessed assets	0	11,379
Affordable Housing Program Obligation, Period Increase (Decrease)	10,000	8,000
Consumer Portfolio Segment [Member]
Changes in assets and liabilities:
Increase in prepaid dealer premiums	(4,625)	(1,399)
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	$ 4,658	$ 3,604

Basis Of Presentation

Basis Of Presentation	9 Months Ended
	Sep. 30, 2019
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 and nine-month periods ended September 30, 2019 are not necessarily indicative of the operating results to be anticipated for the year ending December 31, 2019. 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. 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, 2018 from Park’s 2018 Annual Report to Shareholders (“Park's 2018 Annual Report”). Certain prior period amounts have been reclassified to conform to the current period presentation.

Recent Accounting Pronouncement

Recent Accounting Pronouncements	9 Months Ended
	Sep. 30, 2019
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recent Accounting Pronouncements	Adoption of New Accounting Pronouncements and Issued But Not Yet Effective Accounting Standards The following is a summary of new accounting pronouncements impacting Park's consolidated financial statements, and issued but not yet effective accounting standards: Adoption of New Accounting Pronouncements ASU 2016-02 - Leases (Topic 842): In February 2016, the FASB issued ASU 2016-02 - Leases (Topic 842) . This ASU requires all organizations that lease assets to recognize on the balance sheet the assets and liabilities for the rights and obligations created by those leases. Additional qualitative and quantitative disclosures are required so that users can understand more about the nature of an entity’s leasing activities. The new guidance is effective for annual reporting periods and interim reporting periods within those annual periods, beginning after December 15, 2018. The adoption of this guidance on January 1, 2019 resulted in a $11.0 million increase in assets, a $11.2 million increase in liabilities and a $143,000 decrease in beginning retained earnings, but did not have a material impact on Park's consolidated statement of income. Additionally, Note 13 - Leases includes new required disclosures. ASU 2017-08 - Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities: In March 2017, the FASB issued ASU 2017-08 - Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities. This ASU amends the amortization period for certain purchased callable debt securities held at a premium. It shortens the amortization period for the premium to the earliest call date. Under previous U.S. GAAP, premiums on callable debt securities generally were amortized to the maturity date. The new guidance is effective for annual reporting periods, and interim reporting periods within those annual periods, beginning after December 15, 2018. The adoption of this guidance on January 1, 2019 did not have a material impact on Park's consolidated financial statements. ASU 2018-10 - Codification Improvements to Topic 842, Leases: In July 2018, the FASB issued ASU 2018-10 - Codification Improvements to Topic 842, Leases . This ASU includes amendments that clarify certain aspects of the guidance issued in ASU 2016-02. Park considered these clarifications in determining the appropriate adoption of ASU 2016-02 on January 1, 2019. ASU 2018-11 - Leases (Topic 842): Targeted Improvements: In July 2018, the FASB issued ASU 2018-11 - Leases (Topic 842): Targeted Improvements . This ASU amends the guidance in ASU 2016-02 which was not yet effective. The amendments in the ASU provide entities with an additional (and optional) transition method to adopt the new leases standard. Under this new transition method, an entity initially applies the new leases standard at the adoption date and recognizes a cumulative-effect adjustment to the opening balance of retained earnings for the period of adoption. Additionally, this amendment provides lessors with a practical expedient, by class of asset, to not separate nonlease components from the associated lease component and, instead, to account for those components as a single component if certain criteria are met. Park considered these clarifications in determining the appropriate adoption of ASU 2016-02 on January 1, 2019. ASU 2018-16 - Derivatives and Hedging (Topic 815): Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes: In October 2018, the FASB issued ASU 2018-16 - Derivatives and Hedging (Topic 815): Inclusion of the Secured Overnight Financing Rate (SOFR) Overnight Index Swap (OIS) Rate as a Benchmark Interest Rate for Hedge Accounting Purposes. The amendments in this ASU permit use of the OIS rate based on SOFR as a U.S. benchmark interest rate for hedge accounting purposes under Topic 815 in addition to the interest rates on direct Treasury obligations of the U.S. government ("UST"), the LIBOR swap rate, the OIS rate based on the Fed Funds Effective Rate, and the SIFMA Municipal Swap Rate. The amendments in this ASU are effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. The adoption of this guidance on January 1, 2019 did not have an impact on Park’s consolidated financial statements. ASU 2018-20 - Leases (Topic 842): Narrow - Scope Improvements for Lessors: In December 2018, the FASB issued ASU 2018-20 - Leases (Topic 842): Narrow - Scope Improvements for Lessors. The amendments in this ASU address the treatment of certain sales taxes and other similar taxes, certain lessor costs and recognition of variable payments for contracts with lease and nonlease components. Park considered these clarifications in determining the appropriate adoption of ASU 2016-02 on January 1, 2019. ASU 2019-01 - Leases (Topic 842): Narrow - Codification Improvements: In January 2019, the FASB issued ASU 2019-01 - Leases (Topic 842): Codification Improvements. The amendments in this ASU address the determination of the fair value of the underlying asset by lessors that are not manufacturers or dealers, the presentation on the statement of cash flows for sales type and direct financing leases, and transition disclosures related to Topic 250, Accounting Changes and Error Corrections. Park considered these clarifications in determining the appropriate adoption of ASU 2016-02 on January 1, 2019. ASU 2019-07 - Codification Updates to SEC Sections: In July 2019, the FASB issued ASU 2019-07 - Codification Updates to SEC Sections. The amendments in this ASU update SEC Paragraphs Pursuant to SEC Final Rule Releases No. 33-10532, Disclosure Update and Simplification and Nos. 33-10231 and 33-10442, Investment Company Reporting Modernization, and Miscellaneous Updates . Park considered these amendments in presenting Park's consolidated condensed financial statements and disclosures. Issued But Not Yet Effective Accounting Standards ASU 2016-13 - Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments: In June 2016, FASB issued ASU 2016-13 - Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments . The new guidance replaces the incurred loss model with an expected loss model, which is referred to as the current expected credit loss model. The CECL model is applicable to the measurement of credit losses on financial assets measured at amortized cost, including loan receivables, HTM debt securities, and reinsurance receivables. It also applies to off-balance sheet credit exposures not accounted for as insurance (loan commitments, standby letters of credit, financial guarantees, and other similar instruments) and net investments in leases recognized by a lessor. The CECL model requires an entity to estimate credit losses over the life of an asset or off-balance sheet exposure. The new guidance is effective for annual reporting periods and interim reporting periods within those annual periods, beginning after December 15, 2019. Early adoption is permitted for annual reporting periods and interim reporting periods within those annual periods, beginning after December 15, 2018. Management is currently evaluating the impact of the adoption of this guidance on Park's consolidated financial statements. We anticipate that the adoption of the CECL model will result in a material increase to Park's allowance for loan losses. Management has established a committee to oversee the implementation of the CECL model. Currently, management is focusing on segmentation and loss driver analysis with the anticipation that models will be operational in the fourth quarter of 2019. ASU 2018-13 - Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement: In August 2018, the FASB issued ASU 2018-13 - Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement . This ASU modifies the disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement by removing, modifying and adding certain requirements. The amendments in this ASU are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted upon issuance of this ASU. An entity is permitted to early adopt and remove or modify disclosures upon issuance of the ASU and delay adoption of the additional disclosures until their effective date. The adoption of this guidance will not have an impact on Park’s consolidated financial statements, but will impact disclosures. ASU 2018-14 - Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20): Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans: In August 2018, the FASB issued ASU 2018-14 - Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20): Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans . The amendments in this ASU modify the disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans by removing disclosures that are no longer considered cost beneficial, clarifying the specific requirements of disclosures and adding disclosure requirements identified as relevant. The amendments in this ASU are effective for fiscal years ending after December 15, 2020. Early adoption is permitted. The adoption of this guidance will not have an impact on Park’s consolidated financial statements, but will impact disclosures. ASU 2018-19 - Codification Improvements to Topic 326, Financial Instruments - Credit Losses: In November 2018, the FASB issued ASU 2018-19 - Codification Improvements to Topic 326, Financial Instruments - Credit Losses. The amendment in this ASU clarifies that receivables arising from operating leases are not within the scope of Subtopic 326-20. Impairment of receivables arising from operating leases should be accounted for in accordance with Topic 842, Leases. Park will consider this clarification in determining the appropriate adoption of ASU 2016-13. ASU 2019-04 - Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments: In April 2019, the FASB issued ASU 2018-19 - Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments. This ASU includes amendments that clarify or address specific issues about certain aspects of the amendments in ASU 2016-01, Financial Instruments - Overall (Subtopic 925-10): Recognition and Measurement of Financial Assets and Financial Liabilities , ASU 2016-13 - Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , and ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. Park has already adopted ASU 2016-01. As a result, certain provisions in the amendments within ASU 2019-04 related to the same topics as ASU 2016-01 are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption of these provision is permitted. The adoption of the provisions related to the same topics as ASU 2016-01 is not expected to have a material effect on Park’s consolidated financial statements. For the amendments related to Topic 326 that clarify or address specific aspects of ASU 2016-13, Park will consider these clarifications in determining the appropriate adoption of ASU 2016-13. Park has already adopted ASU 2017-12. As a result, the amendments within ASU 2019-04 are effective as of January 1, 2020 with early adoption permitted. This ASU allows entities, like Park, who did not reclassify debt securities from HTM to AFS upon the adoption of ASU 2017-12 to reclassify these securities as of the adoption of ASU 2019-04. Park has considered this option and, effective September 1, 2019, reclassified all HTM debt securities to AFS. The transfer occurred at fair value and resulted in an unrealized gain, net of taxes, of $19.1 million being recorded in other comprehensive income. ASU 2019-05 - Financial Instruments - Credit Losses (Topic 326): In May 2019, the FASB issued ASU 2019-05 - Financial Instruments - Credit Losses (Topic 326).

Business Combinations

Business Combinations	9 Months Ended
	Sep. 30, 2019
Business Combinations [Abstract]
Business Combination Disclosure [Text Block]	Business Combinations NewDominion Bank On July 1, 2018, NewDominion Bank, a North Carolina state-chartered bank (“NewDominion”), merged with and into The Park National Bank, the national bank subsidiary of Park, with PNB continuing as the surviving entity pursuant to the Agreement and Plan of Merger and Reorganization (the “NewDominion Merger Agreement”), dated as of January 22, 2018, by and among Park, PNB, and NewDominion. In accordance with the NewDominion Merger Agreement, NewDominion shareholders were permitted to make an election to receive for their shares of NewDominion common stock either $1.08 in cash without interest (the cash consideration) or 0.01023 of a Park common share, plus cash in lieu of any fractional Park common share (the stock consideration). Based on the terms of the New Dominion Merger Agreement, the aggregate consideration to be paid in the merger was subject to proration and allocation procedures to ensure that 60 percent of the shares of NewDominion common stock outstanding immediately prior to the completion of the merger were exchanged for the stock consideration and that the remaining 40 percent of the shares of NewDominion common stock outstanding immediately prior to the completion of the merger were exchanged for the cash consideration, including, in each case, shares of NewDominion common stock subject to NewDominion options and restricted stock awards. Purchase consideration consisted of 435,457 Park common shares, valued at $48.5 million , and $30.7 million in cash to acquire 91.45% of NewDominion's outstanding shares of common stock. The remaining 8.55% of NewDominion's outstanding shares of common stock was previously held by Park. Park recognized a gain of $3.5 million as a result of remeasuring to fair value its 8.55% equity interest in NewDominion held before the business combination. This non-taxable gain is included in "Gain on equity securities, net" in the consolidated condensed statements of income. The acquisition is expected to provide additional revenue growth and geographic diversification. NewDominion's results of operations were included in Park’s results beginning July 1, 2018. For the three and nine months ended September 30, 2019, Park recorded merger-related expenses of $4,000 and $83,000 , respectively, associated with the NewDominion acquisition. For the three and nine months ended September 30, 2018, Park recorded merger-related expenses of $3.1 million and $3.7 million , respectively, associated with the NewDominion acquisition. Goodwill of $40.4 million arising from the acquisition consisted largely of synergies and the cost savings resulting from the combining of the operations of the PNB and NewDominion. The goodwill is not deductible for income tax purposes as the transaction was accounted for as a tax-free exchange. The following table summarizes the consideration paid for NewDominion and the amounts of the assets acquired and liabilities assumed at their fair value: (in thousands) Consideration Cash $ 30,684 Park common shares 48,519 Previous 8.55% investment in NewDominion 7,000 Fair value of total consideration transferred $ 86,203 Recognized amounts of identifiable assets acquired and liabilities assumed Cash and cash equivalents $ 42,954 Securities 1,954 Loans 272,753 Premises and equipment 940 Core deposit intangibles 6,249 Trade name intangible 1,300 Other assets 6,133 Total assets acquired 332,283 Deposits 284,231 Other liabilities 2,254 Total liabilities assumed 286,485 Net identifiable assets 45,798 Goodwill $ 40,405 Park accounted for the NewDominion acquisition using the acquisition method of accounting and accordingly, assets acquired, liabilities assumed and consideration exchanged were recorded at estimated fair value on the acquisition date, in accordance with FASB ASC Topic 805, Business Combinations. The fair value of net assets acquired includes fair value adjustments to loans that were not considered impaired as of the acquisition date. The fair value adjustments were determined using discounted contractual cash flows. However, Park believes that all contractual cash flows related to these loans will be collected. As such, these loans were not considered impaired at the acquisition date and were not subject to the guidance relating to purchased credit impaired loans which have shown evidence of credit deterioration since origination. Loans acquired that were not subject to these requirements included non-impaired loans with a fair value and gross contractual amounts receivable of $267.9 million and $273.7 million , respectively, on the date of acquisition. The table below presents information with respect to the fair value of acquired loans as well as their book balance at the acquisition date. (in thousands) Book Balance Fair Value Commercial, financial and agricultural $ 19,246 $ 19,138 Commercial real estate 119,434 117,638 Construction real estate: Commercial 22,494 22,235 Mortgage 8,391 8,111 Residential real estate: Commercial 14,798 14,797 Mortgage 50,295 48,714 HELOC 37,651 36,688 Consumer 541 539 Purchased credit impaired 5,069 4,893 Total loans $ 277,919 $ 272,753 CAB Financial Corporation On April 1, 2019, CAB Financial Corporation, a South Carolina corporation, merged with and into Park, with Park continuing as the surviving entity pursuant to the Agreement and Plan of Merger and Reorganization (the "CABF Merger Agreement"), dated as of September 12, 2018, by and between Park and CABF. Immediately following the CABF merger into Park, Carolina Alliance Bank, a South Carolina state-chartered bank and a wholly-owned subsidiary of CABF, was merged with and into PNB, with PNB as the surviving bank. In accordance with the CABF Merger Agreement, CABF shareholders were to receive for each share of their CABF common stock (i) $3.80 in cash (the cash consideration) and (ii) 0.1378 of a Park common share (the stock consideration). CABF stock options and restricted stock awards were fully vested (with any performance-based vesting condition deemed satisfied) and canceled and converted automatically into the right to receive merger consideration. Purchase consideration consisted of 1,037,205 Park common shares, valued at $98.3 million , and $28.6 million in cash to acquire 100% of CABF's outstanding shares of common stock. The acquisition is expected to provide additional revenue growth and geographic diversification. Carolina Alliance's results of operations were included in Park's results beginning April 1, 2019. For the three and nine months ended September 30, 2019, Park recorded merger-related expenses of $0.7 million and $6.9 million , respectively, associated with the Carolina Alliance acquisition. For the both the three or nine months ended September 30, 2018, Park recorded merger-related expenses of $251,000 associated with the Carolina Alliance acquisition. Goodwill of $45.3 million arising from the acquisition consisted largely of synergies and the cost savings resulting from the combining of the operations of PNB and Carolina Alliance. The goodwill is not deductible for income tax purposes as the transaction was accounted for as a tax-free exchange. The following table summarizes the consideration paid for Carolina Alliance and the amounts of the assets acquired and liabilities assumed at their fair value: (in thousands) Consideration Cash $ 28,630 Park common shares 98,275 Fair value of total consideration transferred $ 126,905 Recognized amounts of identifiable assets acquired and liabilities assumed Cash and cash equivalents $ 23,799 Securities 97,606 Loans 578,577 Premises and equipment 8,337 Core deposit intangibles 10,251 Other assets 31,675 Total assets acquired 750,245 Deposits 632,649 Other liabilities 35,951 Total liabilities assumed 668,600 Net identifiable assets 81,645 Goodwill $ 45,260 Park accounted for the Carolina Alliance acquisition using the acquisition method of accounting and accordingly, assets acquired, liabilities assumed and consideration exchanged were recorded at estimated fair value on the acquisition date, in accordance with FASB ASC Topic 805, Business Combinations. The fair value measurements of assets acquired and liabilities assumed are subject to refinement for up to one year after the closing date of the acquisition as additional information relative to closing date fair values becomes available. Park continues to finalize the fair values of loans, intangible assets, and deferred taxes. As a result, the fair value adjustments are preliminary and may change as information becomes available. Fair value adjustments will be finalized no later than April 2020. During the three months ended September 30, 2019, Park made a $58,000 adjustment to decrease the initial fair value of deposits, which resulted in a $58,000 reduction in goodwill. The fair value of net assets acquired includes fair value adjustments to loans that were not considered impaired as of the acquisition date. The fair value adjustments were determined using discounted contractual cash flows. However, Park believes that all contractual cash flows related to these loans will be collected. As such, these loans were not considered impaired at the acquisition date and were not subject to the guidance relating to purchased credit impaired loans which have shown evidence of credit deterioration since origination. Loans acquired that were not subject to these requirements included non-impaired loans with a fair value and gross contractual amounts receivable of $558.6 million and $570.8 million , respectively, on the date of acquisition. The table below presents information with respect to the fair value of acquired loans as well as their book balance at the acquisition date. (in thousands) Book Balance Fair Value Commercial, financial and agricultural $ 79,537 $ 79,373 Commercial real estate 281,425 273,855 Construction real estate: Commercial 43,106 42,176 Mortgage 11,130 10,633 Residential real estate: Commercial 48,546 48,684 Mortgage 30,519 30,969 HELOC 40,227 39,526 Consumer 4,813 4,647 Leases 28,589 28,781 Purchased credit impaired 21,806 19,933 Total loans $ 589,698 $ 578,577 The following table presents supplemental pro forma information as if the NewDominion and Carolina Alliance acquisitions had occurred as of January 1, 2018. The unaudited pro forma information includes adjustments for interest income on loans and securities acquired, amortization of intangibles arising from the respective transactions, depreciation expense on property acquired, interest expense on deposits acquired, and the related tax effects. The pro forma information is not necessarily indicative of the results of operations that would have occurred had the transactions been effected on the assumed date. Nine months ended September 30, (dollars in thousands, except per share data) 2019 2018 Net interest income $ 227,585 $ 225,753 Net income $ 85,720 $ 94,509 Basic earnings per share $ 5.18 $ 5.64 Diluted earnings per share $ 5.15 $ 5.59

Investment Securities

Investment Securities	9 Months Ended
	Sep. 30, 2019
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 -month and nine-month periods ended September 30, 2019 and 2018 , there were no investment securities deemed to be other-than-temporarily impaired. Investment securities at September 30, 2019 , were as follows: Debt Securities AFS (In thousands) Amortized Cost Gross Unrealized Holding Gains Gross Unrealized Holding Losses Estimated Fair Value Obligations of states and political subdivisions $ 303,522 $ 18,383 $ — $ 321,905 U.S. Government sponsored entities' asset-backed securities 934,468 10,373 6,460 938,381 Total $ 1,237,990 $ 28,756 $ 6,460 $ 1,260,286 Investment securities with unrealized losses at September 30, 2019 , 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 losses Fair value Unrealized Fair value Unrealized Debt Securities AFS U.S. Government sponsored entities' asset-backed securities $ 251,414 $ 1,095 $ 181,807 $ 5,365 $ 433,221 $ 6,460 Total $ 251,414 $ 1,095 $ 181,807 $ 5,365 $ 433,221 $ 6,460 Investment securities at December 31, 2018 , were as follows: Debt Securities AFS (In thousands) Amortized Cost Gross Gross Estimated Fair Value U.S. Government sponsored entities' asset-backed securities $ 1,028,883 $ 453 $ 25,915 $ 1,003,421 Total $ 1,028,883 $ 453 $ 25,915 $ 1,003,421 Debt Securities HTM (In thousands) Amortized Cost Gross Gross Estimated Fair Value Obligations of states and political subdivisions $ 305,278 $ 3,202 $ 2,672 $ 305,808 U.S. Government sponsored entities' asset-backed securities 46,530 87 1,003 45,614 Total $ 351,808 $ 3,289 $ 3,675 $ 351,422 Investment securities with unrealized/unrecognized losses at December 31, 2018 , were as follows: Unrealized/unrecognized loss position for less than 12 months Unrealized/unrecognized loss position for 12 months or longer Total (In thousands) Fair value Unrealized/unrecognized Fair value Unrealized/unrecognized Fair Unrealized/unrecognized Debt Securities AFS U.S. Government sponsored entities' asset-backed securities $ 506,280 $ 5,998 $ 449,569 $ 19,917 $ 955,849 $ 25,915 Total $ 506,280 $ 5,998 $ 449,569 $ 19,917 $ 955,849 $ 25,915 Debt Securities HTM Obligations of states and political subdivisions $ 91,960 $ 1,095 $ 70,723 $ 1,577 $ 162,683 $ 2,672 U.S. Government sponsored entities' asset-backed securities 32,656 838 6,931 165 39,587 1,003 Total $ 124,616 $ 1,933 $ 77,654 $ 1,742 $ 202,270 $ 3,675 Management does not believe any of the unrealized/unrecognized losses at September 30, 2019 or December 31, 2018 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 primarily of 15 -year residential mortgage-backed securities and collateralized mortgage obligations. On September 1, 2019, Park adopted the portion of ASU 2019-04 which allowed for a one time reclassification of securities from HTM to AFS. On this date, Park transferred HTM securities with a fair value of $373.9 million to AFS classification. The transfer occurred at fair value and had a related unrealized gain, net of taxes, of $19.1 million recorded in other comprehensive income. The amortized cost and estimated fair value of investments in debt securities at September 30, 2019 , are shown in the following table by contractual maturity, except for asset-backed securities, which are shown as a single total, due to the unpredictability of the timing of principal repayments. Securities AFS (In thousands) Amortized cost Fair value Tax equivalent yield (1) U.S. Government sponsored entities' asset-backed securities $ 934,468 $ 938,381 2.37 % Obligations of state and political subdivisions: Due five through ten years $ 3,998 $ 4,140 3.04 % Due over ten years 299,524 317,765 3.69 % Total (1) $ 303,522 $ 321,905 3.68 % (1) The tax equivalent yield for certain obligations of state and political subdivisions includes the effects of a taxable equivalent adjustment using a 21% federal corporate income tax rate. During the three-month period ended September 30, 2019, Park sold certain AFS debt securities with a book value of $10.7 million at a gross loss of $67,000 , with a tax benefit of $14,000 , and sold certain AFS debt securities with a book value of $23.8 million at a gross gain of $253,000 , with tax expense of $53,000 . During the nine-month period ended September 30, 2019, Park sold certain AFS debt securities with a book value of $62.4 million at a gross loss of $692,000 , with a tax benefit of $145,000 , and sold certain AFS debt securities with a book value of $29.1 million at a gross gain of $271,000 , with tax expense of $57,000 . There were no sales of investment securities during the three-month period ended September 30, 2018. During the nine-month period ended September 30, 2018, Park sold certain AFS debt securities with a book value of $245.0 million at a gross loss of $2.6 million , with a tax benefit of $551,000 , and sold certain AFS debt securities with a book value of $2.0 million at a gross gain of $60,000 , with tax expense of $13,000 . Additionally, during the nine-month period ended September 30, 2018, Park sold certain HTM debt securities with a book value of $7.4 million at a gross gain of $291,000 , with tax expense of $61,000 . These HTM securities had been paid down by 96.3% of the principal outstanding at acquisition. Investment securities having a book value of $574 million and $634 million at September 30, 2019 and December 31, 2018, respectively, were pledged to collateralize government and trust department deposits in accordance with federal and state requirements, to secure repurchase agreements sold and as collateral for Federal Home Loan Bank advance borrowings.

Other Investment Securities

Other Investment Securities	9 Months Ended
	Sep. 30, 2019
Other Investment Securities [Abstract]
Other Investment Securities	Other Investment Securities Other investment securities consist of stock investments in the FHLB, the FRB, and equity securities. The FHLB and FRB restricted stock investments are carried at their redemption value. Equity securities with a readily determinable fair value are carried at fair value. Equity securities without a readily determinable fair value are recorded at cost, minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions ("modified cost"). Park's portfolio of equity investments in limited partnerships which provide mezzanine funding ("Partnership Investments") are valued using the net asset value practical expedient in accordance with ASC 820. The carrying amount of other investment securities at September 30, 2019 and December 31, 2018 was as follows: (In thousands) September 30, 2019 December 31, 2018 FHLB stock $ 33,424 $ 43,388 FRB stock 14,653 8,225 Equity investments carried at fair value 1,889 1,649 Equity investments carried at cost/modified cost (1) 2,689 2,589 Equity investments carried at net asset value 15,989 17,065 Total other investment securities $ 68,644 $ 72,916 (1) There have been no impairments, downward adjustments, or upward adjustments made to equity investments carried at modified cost. During the nine months ended September 30, 2019, the FHLB repurchased 99,646 shares of FHLB stock with a book value of $10.0 million , and Park purchased 128,553 shares of FRB stock, with a book value of $6.4 million . During the three months ended September 30, 2019 and 2018, $58,000 and $(326,000) , respectively, of unrealized gains (losses) on equity investments carried at fair value were recorded within "Gain on equity securities, net" on the consolidated condensed statements of income. During the nine months ended September 30, 2019 and 2018, $241,000 and $(33,000) , respectively, of unrealized gains (losses) on equity investments carried at fair value were recorded within "Gain on equity securities, net" on the consolidated condensed statements of income. During the three months ended September 30, 2019 and 2018, $3.3 million and $415,000 , respectively, of gains on equity investments carried at NAV were recorded within “Gain on equity securities, net” on the consolidated condensed statements of income. During the nine months ended September 30, 2019 and 2018, $5.1 million and $1.2 million , respectively, of gains on equity investment carried at NAV were recorded within “Gain on equity securities, net” on the consolidated condensed statements of income. An additional $3.5 million gain recorded within “Gain on equity securities, net” on the consolidated condensed statement of income for the nine months ended September 30, 2018 relates to Park's 8.55% investment in NewDominion which was held at June 30, 2018. See Note 3 - Business Combinations .

Loans

Loans	9 Months Ended
	Sep. 30, 2019
Loans and Leases Receivable Disclosure [Abstract]
Loans	Loans The composition of the loan portfolio, by class of loan, as of September 30, 2019 and December 31, 2018 was as follows: September 30, 2019 December 31, 2018 (In thousands) Loan Balance Accrued Interest Receivable Recorded Investment Loan Balance Accrued Interest Receivable Recorded Investment Commercial, financial and agricultural * $ 1,140,138 $ 5,404 $ 1,145,542 $ 1,072,786 $ 4,603 $ 1,077,389 Commercial real estate * 1,599,697 5,767 1,605,464 1,283,045 4,750 1,287,795 Construction real estate: Commercial 223,603 777 224,380 175,300 801 176,101 Mortgage 92,985 232 93,217 70,541 151 70,692 Installment 1,581 5 1,586 2,433 7 2,440 Residential real estate: Commercial 465,656 1,199 466,855 429,730 1,150 430,880 Mortgage 1,174,421 1,529 1,175,950 1,134,278 1,227 1,135,505 HELOC 231,007 1,185 232,192 215,283 1,159 216,442 Installment 13,027 34 13,061 14,327 36 14,363 Consumer 1,430,400 3,946 1,434,346 1,292,136 3,756 1,295,892 Leases 31,132 30 31,162 2,273 26 2,299 Total loans $ 6,403,647 $ 20,108 $ 6,423,755 $ 5,692,132 $ 17,666 $ 5,709,798 * Included within each of commercial, financial and agricultural loans and commercial real estate 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 $15.9 million at September 30, 2019 and $12.5 million at December 31, 2018 , which represented a net deferred income position at each date. At September 30, 2019 and December 31, 2018 , loans included purchase accounting adjustments of $13.4 million and $4.4 million , respectively, which represented a net deferred income position at each date. This fair market value adjustment is expected to be recognized into interest income on a level yield basis over the remaining expected life of the loans. Overdrawn deposit accounts of $2.0 million and $2.3 million had been reclassified to loans at September 30, 2019 and December 31, 2018 , respectively, and are included in the commercial, financial and agricultural loan class above. Credit Quality The following tables present the recorded investment in nonaccrual loans, accruing TDRs, and loans past due 90 days or more and still accruing by class of loan as of September 30, 2019 and December 31, 2018 : September 30, 2019 (In thousands) Nonaccrual Loans Accruing TDRs Loans Past Due 90 Days or More and Accruing Total Nonperforming Loans Commercial, financial and agricultural $ 28,099 $ 3,430 $ — $ 31,529 Commercial real estate 36,663 2,136 625 39,424 Construction real estate: Commercial 1,786 82 235 2,103 Mortgage 27 7 — 34 Installment 73 6 12 91 Residential real estate: Commercial 2,224 14 — 2,238 Mortgage 15,367 8,821 1,641 25,829 HELOC 1,700 1,021 56 2,777 Installment 512 1,915 — 2,427 Consumer 3,016 1,053 570 4,639 Leases 88 — 209 297 Total loans $ 89,555 $ 18,485 $ 3,348 $ 111,388 December 31, 2018 (In thousands) Nonaccrual Loans Accruing TDRs Loans Past Due 90 Days or More and Accruing Total Nonperforming Loans Commercial, financial and agricultural $ 14,998 $ 196 $ 10 $ 15,204 Commercial real estate 25,566 2,860 — 28,426 Construction real estate: Commercial 1,866 — — 1,866 Mortgage — 15 20 35 Installment 19 9 — 28 Residential real estate: Commercial 2,610 122 — 2,732 Mortgage 16,892 9,100 1,124 27,116 HELOC 2,158 1,028 9 3,195 Installment 468 1,049 24 1,541 Consumer 3,377 843 1,115 5,335 Leases — — — — Total loans $ 67,954 $ 15,222 $ 2,302 $ 85,478 The following table provides additional information regarding those nonaccrual loans and accruing TDR loans that were individually evaluated for impairment and those collectively evaluated for impairment, as of September 30, 2019 and December 31, 2018 . September 30, 2019 December 31, 2018 (In thousands) Nonaccrual and Accruing TDRs Loans Individually Evaluated for Impairment Loans Collectively Evaluated for Impairment Nonaccrual and Accruing TDRs Loans Individually Evaluated for Impairment Loans Collectively Evaluated for Impairment Commercial, financial and agricultural $ 31,529 $ 31,485 $ 44 $ 15,194 $ 15,120 $ 74 Commercial real estate 38,799 38,799 — 28,426 28,426 — Construction real estate: Commercial 1,868 1,868 — 1,866 1,866 — Mortgage 34 — 34 15 — 15 Installment 79 — 79 28 — 28 Residential real estate: Commercial 2,238 2,238 — 2,732 2,732 — Mortgage 24,188 — 24,188 25,992 — 25,992 HELOC 2,721 — 2,721 3,186 — 3,186 Installment 2,427 — 2,427 1,517 — 1,517 Consumer 4,069 — 4,069 4,220 — 4,220 Leases 88 88 — — — — Total loans $ 108,040 $ 74,478 $ 33,562 $ 83,176 $ 48,144 $ 35,032 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, together with the related allowance recorded, as of September 30, 2019 and December 31, 2018 . September 30, 2019 December 31, 2018 (In thousands) Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated With no related allowance recorded: Commercial, financial and agricultural $ 19,140 $ 18,783 $ — $ 8,999 $ 3,713 $ — Commercial real estate 38,723 38,519 — 26,663 26,213 — Construction real estate: Commercial 4,682 1,868 — 4,679 1,866 — Residential real estate: Commercial 2,101 2,035 — 2,691 2,374 — Leases — — — — — — With an allowance recorded: Commercial, financial and agricultural 14,839 12,702 2,917 13,736 11,407 2,169 Commercial real estate 280 280 30 2,255 2,213 86 Construction real estate: Commercial — — — — — — Residential real estate: Commercial 203 203 111 358 358 18 Leases 88 88 25 — — — Total $ 80,056 $ 74,478 $ 3,083 $ 59,381 $ 48,144 $ 2,273 Management’s general practice is to charge down loans individually evaluated for impairment to the fair value of the underlying collateral. At September 30, 2019 and December 31, 2018 , there were $3.5 million and $8.8 million , respectively, of partial charge-offs on loans individually evaluated for impairment with no related allowance recorded and $2.1 million and $2.4 million , respectively, of partial charge-offs on loans individually evaluated for impairment that also had a specific reserve allocated. The allowance included specific reserves related to loans individually evaluated for impairment at September 30, 2019 and December 31, 2018 of $3.1 million and $2.3 million , respectively. These loans with specific reserves had a recorded investment of $13.3 million and $14.0 million as of September 30, 2019 and December 31, 2018 , respectively. Interest income on nonaccrual loans individually evaluated for impairment is recognized on a cash basis only when Park expects to receive the entire recorded investment of the loans. Interest income on accruing TDRs individually evaluated for impairment continues to be recorded on an accrual basis. 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 and nine months ended September 30, 2019 and September 30, 2018 : Three Months Ended Three Months Ended (In thousands) Recorded Investment as of September 30, 2019 Average Recorded Investment Interest Income Recognized Recorded Investment as of September 30, 2018 Average Recorded Investment Interest Income Recognized Commercial, financial and agricultural $ 31,485 $ 23,468 $ 107 $ 16,026 $ 23,247 $ 187 Commercial real estate 38,799 29,779 277 25,805 26,428 268 Construction real estate: Commercial 1,868 1,922 1 2,016 2,246 4 Residential real estate: Commercial 2,238 1,977 27 2,913 2,758 26 Leases 88 90 — — — — Total $ 74,478 $ 57,236 $ 412 $ 46,760 $ 54,679 $ 485 Nine Months Ended Nine Months Ended (In thousands) Recorded Investment as of September 30, 2019 Average Recorded Investment Interest Income Recognized Recorded Investment as of September 30, 2018 Average Recorded Investment Interest Income Recognized Commercial, financial and agricultural $ 31,485 $ 18,368 $ 244 — $ 16,026 $ 22,686 $ 506 Commercial real estate 38,799 29,712 803 — 25,805 21,582 671 Construction real estate: Commercial 1,868 2,176 23 — 2,016 1,661 31 Residential real estate: Commercial 2,238 2,198 72 — 2,913 6,086 84 Leases 88 36 — — — — Total $ 74,478 $ 52,490 $ 1,142 — $ 46,760 $ 52,015 $ 1,292 The following tables present the aging of the recorded investment in past due loans as of September 30, 2019 and December 31, 2018 by class of loan. September 30, 2019 (In thousands) Accruing Loans Past Due 30-89 Days Past Due Nonaccrual Loans and Loans Past Due 90 Days or More and Accruing (1) Total Past Due Total Current (2) Total Recorded Investment Commercial, financial and agricultural $ 2,570 $ 10,602 $ 13,172 $ 1,132,370 $ 1,145,542 Commercial real estate 673 1,354 2,027 1,603,437 1,605,464 Construction real estate: Commercial — 2,023 2,023 222,357 224,380 Mortgage 118 — 118 93,099 93,217 Installment — 12 12 1,574 1,586 Residential real estate: Commercial 40 791 831 466,024 466,855 Mortgage 10,196 9,508 19,704 1,156,246 1,175,950 HELOC 570 845 1,415 230,777 232,192 Installment 45 269 314 12,747 13,061 Consumer 5,758 1,572 7,330 1,427,016 1,434,346 Leases 51 209 260 30,902 31,162 Total loans $ 20,021 $ 27,185 $ 47,206 $ 6,376,549 $ 6,423,755 (1) Includes an aggregate of $3.3 million of loans past due 90 days or more and accruing. The remaining loans were past due nonaccrual loans. (2) Includes an aggregate of $65.7 million of nonaccrual loans which were current in regards to contractual principal and interest payments. December 31, 2018 (in thousands) Accruing Loans Past Due 30-89 Days Past Due (1) Total Past Due Total Current (2) Total Recorded Investment Commercial, financial and agricultural $ 4,786 $ 1,375 $ 6,161 $ 1,071,228 $ 1,077,389 Commercial real estate 780 3,584 4,364 1,283,431 1,287,795 Construction real estate: Commercial — 1,635 1,635 174,466 176,101 Mortgage 133 20 153 70,539 70,692 Installment 28 19 47 2,393 2,440 Residential real estate: Commercial 683 1,104 1,787 429,093 430,880 Mortgage 13,210 8,553 21,763 1,113,742 1,135,505 HELOC 620 907 1,527 214,915 216,442 Installment 155 274 429 13,934 14,363 Consumer 9,524 2,131 11,655 1,284,237 1,295,892 Leases — — — 2,299 2,299 Total loans $ 29,919 $ 19,602 $ 49,521 $ 5,660,277 $ 5,709,798 (1) Includes an aggregate of $2.3 million of loans past due 90 days or more and accruing. The remaining loans were past due nonaccrual loans. (2) Includes an aggregate of $50.7 million of nonaccrual loans which were current in regards to contractual principal and interest payments. Credit Quality Indicators Management utilizes past due information as a credit quality indicator across the loan portfolio. Past due information as of September 30, 2019 and December 31, 2018 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 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 (graded an 1 through a 4) 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 Park’s credit position at some future date. Commercial loans graded a 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 placed on nonaccrual status and 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 September 30, 2019 and December 31, 2018 for all commercial loans: September 30, 2019 (In thousands) 5 Rated 6 Rated Nonaccrual and Accruing TDRs Purchase Credit Impaired (1) Pass-Rated Recorded Investment Commercial, financial and agricultural * $ 27,059 $ 315 $ 31,529 $ 4,803 $ 1,081,836 $ 1,145,542 Commercial real estate * 11,429 1,246 38,799 10,595 1,543,395 1,605,464 Construction real estate: Commercial 3,852 — 1,868 1,288 217,372 224,380 Residential real estate: Commercial 1,001 33 2,238 1,926 461,657 466,855 Leases — — 88 568 30,506 31,162 Total commercial loans $ 43,341 $ 1,594 $ 74,522 $ 19,180 $ 3,334,766 $ 3,473,403 * Included within each of commercial, financial and agricultural loans and commercial real estate loans is an immaterial amount of consumer loans that are not broken out by class. (1) Excludes loans acquired with deteriorated credit quality which are nonaccrual or TDRs due to additional credit deterioration or modification post acquisition. These loans had a recorded investment of $11,000 at September 30, 2019 . December 31, 2018 (In thousands) 5 Rated 6 Rated Nonaccrual and Accruing TDRs Purchase Credit Impaired (1) Pass-Rated Recorded Investment Commercial, financial and agricultural * $ 11,509 $ 444 $ 15,194 $ 148 $ 1,050,094 $ 1,077,389 Commercial real estate * 2,707 — 28,426 3,059 1,253,603 1,287,795 Construction real estate: Commercial 1,560 — 1,866 503 172,172 176,101 Residential real estate: Commercial 272 41 2,732 251 427,584 430,880 Leases — — — — 2,299 2,299 Total Commercial Loans $ 16,048 $ 485 $ 48,218 $ 3,961 $ 2,905,752 $ 2,974,464 * Included within each of commercial, financial and agricultural loans and commercial real estate loans is an immaterial amount of consumer loans that are not broken out by class. (1) Excludes loans acquired with deteriorated credit quality which are nonaccrual or TDRs due to additional credit deterioration or modification post acquisition. These loans had a recorded investment of $475,000 at December 31, 2018. Loans and Leases Acquired with Deteriorated Credit Quality In conjunction with the NewDominion Bank acquisition, Park acquired loans with a book value of $277.9 million as of July 1, 2018. These loans were recorded at the initial fair value of $272.8 million . Loans acquired with deteriorated credit quality with a book value of $5.1 million were recorded at the initial fair value of $4.9 million . The carrying amount of loans acquired with deteriorated credit quality at September 30, 2019 and December 31, 2018 was $3.3 million and $4.4 million , respectively, while the outstanding customer balance was $3.4 million and $4.6 million , respectively. At September 30, 2019 and December 31, 2018 , no allowance had been recognized related to the acquired impaired loans. In conjunction with the Carolina Alliance acquisition, Park acquired loans and leases with a book value of $589.7 million as of April 1, 2019. These loans and leases were recorded at the initial fair value of $578.6 million . Loans and leases acquired with deteriorated credit quality with a book value of $21.8 million were recorded at the initial fair value of $19.9 million . The carrying amount of loans and leases acquired with deteriorated credit quality at September 30, 2019 was $17.2 million , while the outstanding customer balance was $18.9 million . At September 30, 2019 , no allowance had been recognized related to the acquired impaired loans and leases. Troubled Debt Restructurings 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. A court's discharge of a borrower's debt in a Chapter 7 bankruptcy is considered a concession when the borrower does not reaffirm the discharged debt. Certain loans which were modified during the three -month and nine -month periods ended September 30, 2019 and September 30, 2018 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. Quarterly, 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 did not contain a concessionary interest rate or other concessionary terms and the terms of the renewal/modification are considered to be market terms based on the current risk characteristics of the borrower, management considers the potential removal of the TDR classification. If deemed appropriate, the TDR classification is removed if 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 removed on $15,000 of loans during the three -month period ended September 30, 2019 and on $38,000 of loans during the nine -month period ended September 30, 2019 . The TDR classification was removed on $0.2 million of loans during the three -month period ended September 30, 2018 and on $2.4 million of loans during the nine -month period ended September 30, 2018 . At September 30, 2019 and December 31, 2018 , there were $29.1 million and $24.6 million , respectively, of TDRs included in the nonaccrual loan totals. At September 30, 2019 and December 31, 2018 , $17.2 million and $19.2 million , respectively, of these nonaccrual TDRs were performing in accordance with the terms of the restructured note. As of September 30, 2019 and December 31, 2018 , loans with a recorded investment of $18.5 million and $15.2 million , respectively, were included in accruing TDR loan totals. Management will continue to review the restructured loans and may determine it is appropriate to move certain nonaccrual TDRs to accrual status in the future. At September 30, 2019 and December 31, 2018 , Park had commitments to lend $3.4 million and $0.3 million , respectively, of additional funds to borrowers whose outstanding loan terms had been modified in a TDR. At both September 30, 2019 and December 31, 2018 , there were $1.2 million of specific reserves related to TDRs. Modifications made in 2019 and 2018 were largely the result of renewals and extending the maturity date of the loans at terms consistent with the original notes. 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 Accounting Standards Codification (ASC) 310. There were no additional specific reserves recorded during the three -month period ended September 30, 2019 as a result of TDRs identified in the period. Additional specific reserves of $150,000 were recorded during the three -month period ended September 30, 2018 as a result of TDRs identified in the period. Additional specific reserves of $1,000 and $160,000 were recorded during the nine -month periods ended September 30, 2019 and September 30, 2018 , respectively, as a result of TDRs identified in the respective periods. The terms of certain other loans were modified during the three -month and nine -month periods ended September 30, 2019 and September 30, 2018 that did not meet the definition of a TDR. There were $0.4 million of substandard commercial loans modified during the three -month period ended September 30, 2019 which did not meet the definition of a TDR. Substandard commercial loans modified during the nine -month period ended September 30, 2019 which did not meet the definition of a TDR had a total recorded investment of $0.6 million . There were no substandard commercial loans modified during the three -month period ended September 30, 2018 which did not meet the definition of a TDR. Substandard commercial loans modified during the nine -month period ended September 30, 2018 which did not meet the definition of a TDR had a total recorded investment of $0.2 million . Consumer loans modified during the three -month and nine -month periods ended September 30, 2019 which did not meet the definition of a TDR had a total recorded investment of $11.9 million and $21.4 million , respectively. Consumer loans with a recorded investment of $6.6 million and $17.0 million were modified during the three -month and nine -month periods ended September 30, 2018 , respectively, and did not meet the definition of a TDR. 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 September 30, 2019 and September 30, 2018 , as well as the recorded investment of these contracts at September 30, 2019 and September 30, 2018 . The recorded investment pre- and post-modification is generally the same due to the fact that Park does not typically forgive principal. Three Months Ended (In thousands) Number of Contracts Accruing Nonaccrual Total Recorded Investment Commercial, financial and agricultural 8 $ 752 $ 5,002 $ 5,754 Commercial real estate 1 — 241 241 Construction real estate: Commercial 1 82 — 82 Mortgage — — — — Installment — — — — Residential real estate: Commercial 1 13 — 13 Mortgage 4 286 215 501 HELOC 6 31 107 138 Installment 9 407 14 421 Consumer 77 174 542 716 Total loans 107 $ 1,745 $ 6,121 $ 7,866 Three Months Ended (In thousands) Number of Contracts Accruing Nonaccrual Total Recorded Investment Commercial, financial and agricultural 8 $ 22 $ 552 $ 574 Commercial real estate 3 — 1,154 1,154 Construction real estate: Commercial — — — — Mortgage — — — — Installment — — — — Residential real estate: Commercial 2 55 249 304 Mortgage 4 — 246 246 HELOC 10 453 16 469 Installment 8 336 — 336 Consumer 71 31 590 621 Total loans 106 $ 897 $ 2,807 $ 3,704 Of those loans which were modified and determined to be a TDR during the three -month period ended September 30, 2019 , $0.6 million were on nonaccrual status as of December 31, 2018 . Of those loans which were modified and determined to be a TDR during the three -month period ended September 30, 2018 , $0.1 million were on nonaccrual status as of December 31, 2017 . The following tables detail the number of contracts modified as TDRs during the nine -month periods ended September 30, 2019 and September 30, 2018 , as well as the recorded investment of these contracts at September 30, 2019 and September 30, 2018 . The recorded investment pre- and post-modification is generally the same due to the fact that Park does not typically forgive principal. Nine Months Ended (In thousands) Number of Contracts Accruing Nonaccrual Total Recorded Investment Commercial, financial and agricultural 24 $ 3,237 $ 6,059 $ 9,296 Commercial real estate 5 — 3,236 3,236 Construction real estate: Commercial 2 82 — 82 Mortgage 1 — — — Installment — — — — Residential real estate: Commercial 2 13 36 49 Mortgage 18 340 673 1,013 HELOC 14 121 243 364 Installment 25 951 52 1,003 Consumer 251 199 987 1,186 Total loans 342 $ 4,943 $ 11,286 $ 16,229 Nine Months Ended (In thousands) Number of Contracts Accruing Nonaccrual Total Recorded Investment Commercial, financial and agricultural 16 $ 208 $ 592 $ 800 Commercial real estate 10 447 1,412 1,859 Construction real estate: Commercial 1 — — — Mortgage — — — — Installment 2 12 — 12 Residential real estate: Commercial 2 55 249 304 Mortgage 17 90 972 1,062 HELOC 18 735 125 860 Installment 17 437 16 453 Consumer 206 59 1,157 1,216 Total loans 289 $ 2,043 $ 4,523 $ 6,566 Of those loans which were modified and determined to be a TDR during the nine -month period ended September 30, 2019 , $1.8 million were on nonaccrual status as of December 31, 2018 . Of those loans which were modified and determined to be a TDR during the nine -month period ended September 30, 2018 , $0.5 million were on nonaccrual status as of December 31, 2017 . The following tables present the recorded investment in loans which were modified as TDRs within the previous 12 months and for which there was a payment default during the three -month and nine -month periods ended September 30, 2019 and September 30, 2018 , 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 (In thousands) Number of Contracts Recorded Investment Number of Contracts Recorded Investment Commercial, financial and agricultural 2 $ 2 1 $ 1 Commercial real estate — — — — Construction real estate: Commercial — — — — Mortgage — — — — Installment — — — — Residential real estate: Commercial — — — — Mortgage 4 257 8 688 HELOC 5 135 3 108 Installment 2 66 — — Consumer 51 477 40 315 Leases — — — — Total loans 64 $ 937 52 $ 1,112 Of the $0.9 million in modified TDRs which defaulted during the three -month period ended September 30, 2019 , $48,000 were accruing loans and $0.9 million were nonaccrual loans. Of the $1.1 million in modified TDRs which defaulted during the three -month period ended September 30, 2018 , $67,000 were accruing loans and $1.0 million were nonaccrual loans. Nine Months Ended Nine Months Ended (In thousands) Number of Contracts Recorded Investment Number of Contracts Recorded Investment Commercial, financial and agricultural 3 $ 65 1 $ 1 Commercial real estate — — — — Construction real estate: Commercial — — — — Mortgage — — — — Installment — — — — Residential real estate: Commercial 1 13 — — Mortgage 7 370 9 789 HELOC 7 165 3 108 Installment 2 66 — — Consumer 58 530 50 392 Leases — — — — Total loans 78 $ 1,209 63 $ 1,290 Of the $1.2 million in modified TDRs which defaulted during the nine -month period ended September 30, 2019 , $87,000 were accruing loans and $1.1 million were nonaccrual loans. Of the $1.3 million in modified TDRs which defaulted during the nine -month period ended September 30, 2018 , $67,000 were accruing loans and $1.2 million were nonaccrual loans.

Allowance For Loan Losses

Allowance For Loan Losses	9 Months Ended
	Sep. 30, 2019
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery [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 2018 Annual Report. Loss factors are reviewed quarterly and updated at least annually to reflect recent loan loss history and incorporate current risks and trends which may not be recognized in historical data. The following are factors management reviews on a quarterly or annual basis. • Historical Loss Factor: Management updated the historical loss calculation during the fourth quarter of 2018, incorporating net charge-offs plus changes in specific reserves through December 31, 2018. With the addition of 2018 historical losses, management extended the historical loss period to 108 months from 96 months. The 108 -month historical loss period captures all annual periods subsequent to June 2009, the end of the most recent recession, thus encompassing the full economic cycle to date. • Loss Emergence Period Factor: At least annually, management calculates the loss emergence period for each commercial loan segment. The loss emergence period is calculated based upon the average period of time it takes from the probable occurrence of a loss event to the credit being moved to nonaccrual. If the loss emergence period for any commercial loan segment is greater than one year, management applies additional general reserves to all performing loans within that segment of the commercial loan portfolio. The loss emergence period was last updated in the fourth quarter of 2018. • Loss Migration Factor: Park’s commercial loans are individually risk graded. If loan downgrades occur, the probability of default increases, and accordingly, management allocates a higher percentage reserve to those accruing commercial loans graded special mention and substandard. Annually, management calculates a loss migration factor for each commercial loan segment for special mention and substandard credits based on a review of losses over the period of time a loan takes to migrate from pass-rated to impaired. The loss migration factor was last updated in the fourth quarter of 2018. • Environmental Loss Factor: Management has identified certain macroeconomic factors that trend in accordance with losses in Park’s commercial loan portfolio. These macroeconomic factors are reviewed quarterly and the adjustments made to the environmental loss factor impacting each segment in the performing commercial loan portfolio correlate to changes in the macroeconomic environment. No change was made to the environmental loss factor during the nine months ended September 30, 2019 . The activity in the allowance for loan losses for the three -month and nine -month periods ended September 30, 2019 and September 30, 2018 is summarized in the following tables. Three Months Ended (In thousands) Commercial, financial and agricultural Commercial real estate Construction real estate Residential real estate Consumer Leases Total Allowance for loan losses: Beginning balance $ 17,370 $ 10,377 $ 5,065 $ 8,869 $ 12,265 $ 57 $ 54,003 Charge-offs 585 8 — 85 1,801 — 2,479 Recoveries 403 246 432 98 1,183 — 2,362 Net charge-offs/(recoveries) 182 (238 ) (432 ) (13 ) 618 — 117 Provision/(recovery) 1,238 (177 ) (65 ) 49 908 14 1,967 Ending balance $ 18,426 $ 10,438 $ 5,432 $ 8,931 $ 12,555 $ 71 $ 55,853 Three Months Ended (In thousands) Commercial, financial and agricultural Commercial real estate Construction real estate Residential real estate Consumer Leases Total Allowance for loan losses: Beginning balance $ 14,478 $ 9,406 $ 4,652 $ 9,245 $ 11,671 $ — $ 49,452 Charge-offs 993 23 26 61 2,371 — 3,474 Recoveries 136 27 156 130 875 4 1,328 Net charge-offs/(recoveries) 857 (4 ) (130 ) (69 ) 1,496 (4 ) 2,146 Provision/(recovery) 1,394 337 (187 ) (212 ) 1,612 (4 ) 2,940 Ending balance $ 15,015 $ 9,747 $ 4,595 $ 9,102 $ 11,787 $ — $ 50,246 Nine Months Ended (In thousands) Commercial, financial and agricultural Commercial real estate Construction real estate Residential real estate Consumer Leases Total Allowance for loan losses: Beginning balance $ 16,777 $ 9,768 $ 4,463 $ 8,731 $ 11,773 $ — $ 51,512 Charge-offs 1,498 401 — 176 6,319 — 8,394 Recoveries 983 360 543 640 3,824 1 6,351 Net charge-offs/(recoveries) 515 41 (543 ) (464 ) 2,495 (1 ) 2,043 Provision/(recovery) 2,164 711 426 (264 ) 3,277 70 6,384 Ending balance $ 18,426 $ 10,438 $ 5,432 $ 8,931 $ 12,555 $ 71 $ 55,853 Nine Months Ended (In thousands) Commercial, financial and agricultural Commercial real estate Construction real estate Residential real estate Consumer Leases Total Allowance for loan losses: Beginning balance $ 15,022 $ 9,601 $ 4,430 $ 9,321 $ 11,614 $ — $ 49,988 Charge-offs 1,929 252 57 279 7,123 — 9,640 Recoveries 994 203 435 734 2,942 4 5,312 Net charge-offs/(recoveries) 935 49 (378 ) (455 ) 4,181 (4 ) 4,328 Provision/(recovery) 928 195 (213 ) (674 ) 4,354 (4 ) 4,586 Ending balance $ 15,015 $ 9,747 $ 4,595 $ 9,102 $ 11,787 $ — $ 50,246 Loans collectively evaluated for impairment in the following tables include all performing loans at September 30, 2019 and December 31, 2018 , 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 September 30, 2019 and December 31, 2018 , 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 2018 Annual Report). The composition of the allowance for loan losses at September 30, 2019 and December 31, 2018 was as follows: September 30, 2019 (In thousands) Commercial, financial and agricultural Commercial real estate Construction real estate Residential real estate Consumer Leases Total Allowance for loan losses: Ending allowance balance attributed to loans: Individually evaluated for impairment $ 2,917 $ 30 $ — $ 111 $ — $ 25 $ 3,083 Collectively evaluated for impairment 15,509 10,408 5,432 8,820 12,555 46 52,770 Acquired with deteriorated credit quality (1) — — — — — — — Total ending allowance balance $ 18,426 $ 10,438 $ 5,432 $ 8,931 $ 12,555 $ 71 $ 55,853 Loan balance: Loans individually evaluated for impairment $ 31,472 $ 38,758 $ 1,869 $ 2,237 $ — $ 88 $ 74,424 Loans collectively evaluated for impairment 1,103,885 1,550,422 314,942 1,878,615 1,430,397 30,476 6,308,737 Loans acquired with deteriorated credit quality (1) 4,781 10,517 1,358 3,259 3 568 20,486 Total ending loan balance $ 1,140,138 $ 1,599,697 $ 318,169 $ 1,884,111 $ 1,430,400 $ 31,132 $ 6,403,647 Allowance for loan losses as a percentage of loan balance: Loans individually evaluated for impairment 9.27 % 0.08 % — % 4.96 % — % 28.41 % 4.14 % Loans collectively evaluated for impairment 1.40 % 0.67 % 1.72 % 0.47 % 0.88 % 0.15 % 0.84 % Loans acquired with deteriorated credit quality — % — % — % — % — % — % — % Total 1.62 % 0.65 % 1.71 % 0.47 % 0.88 % 0.23 % 0.87 % Recorded investment: Loans individually evaluated for impairment $ 31,485 $ 38,799 $ 1,868 $ 2,238 $ — $ 88 $ 74,478 Loans collectively evaluated for impairment 1,109,254 1,556,070 315,927 1,882,543 1,434,343 30,506 6,328,643 Loans acquired with deteriorated credit quality (1) 4,803 10,595 1,388 3,277 3 568 20,634 Total ending recorded investment $ 1,145,542 $ 1,605,464 $ 319,183 $ 1,888,058 $ 1,434,346 $ 31,162 $ 6,423,755 (1) Excludes loans acquired with deteriorated credit quality which are individually evaluated for impairment due to additional credit deterioration or modification post-acquisition. These loans had a balance of $11,000 , a recorded investment of $11,000 , and no allowance as of September 30, 2019 . December 31, 2018 (In thousands) Commercial, financial and agricultural Commercial real estate Construction real estate Residential real estate Consumer Leases Total Allowance for loan losses: Ending allowance balance attributed to loans: Individually evaluated for impairment $ 2,169 $ 86 $ — $ 18 $ — $ — $ 2,273 Collectively evaluated for impairment 14,608 9,682 4,463 8,713 11,773 — 49,239 Acquired with deteriorated credit quality — — — — — — — Total ending allowance balance $ 16,777 $ 9,768 $ 4,463 $ 8,731 $ 11,773 $ — $ 51,512 Loan balance: Loans individually evaluated for impairment $ 15,119 $ 28,418 $ 1,866 $ 2,732 $ — $ — $ 48,135 Loans collectively evaluated for impairment 1,057,520 1,251,579 245,909 1,790,637 1,292,136 2,273 5,640,054 Loans acquired with deteriorated credit quality (1) 147 3,048 499 249 — — 3,943 Total ending loan balance $ 1,072,786 $ 1,283,045 $ 248,274 $ 1,793,618 $ 1,292,136 $ 2,273 $ 5,692,132 Allowance for loan losses as a percentage of loan balance: Loans individually evaluated for impairment 14.35 % 0.30 % — % 0.66 % — % — % 4.72 % Loans collectively evaluated for impairment 1.38 % 0.77 % 1.81 % 0.49 % 0.91 % — % 0.87 % Loans acquired with deteriorated credit quality — % — % — % — % — % — % — % Total 1.56 % 0.76 % 1.80 % 0.49 % 0.91 % — % 0.90 % Recorded investment: Loans individually evaluated for impairment $ 15,120 $ 28,426 $ 1,866 $ 2,732 $ — $ — $ 48,144 Loans collectively evaluated for impairment 1,062,121 1,256,310 246,864 1,794,207 1,295,892 2,299 5,657,693 Loans acquired with deteriorated credit quality (1) 148 3,059 503 251 — — 3,961 Total ending recorded investment $ 1,077,389 $ 1,287,795 $ 249,233 $ 1,797,190 $ 1,295,892 $ 2,299 $ 5,709,798 (1) Excludes loans acquired with deteriorated credit quality which are individually evaluated for impairment due to additional credit deterioration or modification post acquisition. These loans had a balance of $475,000 , a recorded investment of $475,000 , and no allowance as of December 31, 2018.

Mortgage Loans Held for Sale

Mortgage Loans Held for Sale	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Mortgage Loans Held For Sale	Loans Held For Sale Mortgage loans held for sale are carried at their fair value. At September 30, 2019 and December 31, 2018 , respectively, Park had $22.0 million and $4.2 million in mortgage loans held for sale. These amounts are included in loans on the consolidated condensed balance sheets and in the residential real estate loan segments in Note 6 - Loans , and Note 7 - Allowance for Loan Losses . The contractual balance was $21.7 million and $4.1 million at September 30, 2019 and December 31, 2018 , respectively. The gain expected upon sale was $294,000 and $60,000 at September 30, 2019 and December 31, 2018 , respectively. None of these loans were 90 days or more past due or on nonaccrual status as of September 30, 2019 or December 31, 2018 .

Goodwill and other intangibles

Goodwill and other intangibles	9 Months Ended
	Sep. 30, 2019
Goodwill [Line Items]
Goodwill and Intangible Assets Disclosure [Text Block]	Goodwill and Other Intangible Assets The following table shows the activity in goodwill and other intangible assets for the nine months ended September 30, 2019 and 2018. (in thousands) Goodwill Other intangible assets Total December 31, 2017 $ 72,334 $ — $ 72,334 Acquired goodwill and other intangible assets 40,405 7,549 47,954 Amortization — 289 289 September 30, 2018 $ 112,739 $ 7,260 $ 119,999 December 31, 2018 $ 112,739 $ 6,971 $ 119,710 Acquired goodwill and other intangible assets 45,260 10,251 55,511 Amortization — 1,732 1,732 September 30, 2019 $ 157,999 $ 15,490 $ 173,489 Park evaluates goodwill for impairment during the second quarter of each year, with financial data as of March 31. Based on the analysis performed during the second quarter of 2019, the Company determined that goodwill for Park's reporting unit, PNB, was not impaired. There have been no subsequent circumstances or events triggering an additional evaluation. Acquired Intangible Assets The following table shows the balance of acquired intangible assets as of September 30, 2019 and December 31, 2018. September 30, 2019 December 31, 2018 (in thousands) Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization Other intangible assets: Core deposit intangible assets $ 16,500 $ 2,310 $ 6,249 $ 578 Trade name intangible assets 1,300 — 1,300 — Total $ 17,800 $ 2,310 $ 7,549 $ 578 Core deposit intangible assets are being amortized, on an accelerated basis, over a period of ten years. The trade name intangible is an indefinite life asset and is not amortized, but rather is assessed, at least annually, for impairment. Aggregate amortization expense was $741,000 and $1.7 million for the three and nine months ended September 30, 2019, respectively. Aggregate amortization expense was $289,000 for both the three and nine months ended September 30, 2018. Estimated amortization expense related to core deposit intangible assets for each of the periods listed below follows: (in thousands) Total Three months ending December 31, 2019 $ 741 2020 2,502 2021 2,040 2022 1,725 2023 1,548

Investment in Qualified Afforda

Investment in Qualified Affordable Housing	9 Months Ended
	Sep. 30, 2019
Equity Method Investments and Joint Ventures [Abstract]
Investment in Qualified Affordable Housing	Investment in Qualified Affordable Housing Park makes certain equity investments in various limited partnerships that sponsor affordable housing projects. The purposes of these investments are to achieve a satisfactory return on capital, help create affordable housing opportunities, and assist the Company to achieve its goals associated with the Community Reinvestment Act. The table below details the balances of Park’s affordable housing tax credit investments and related unfunded commitments as of September 30, 2019 and December 31, 2018. (in thousands) September 30, 2019 December 31, 2018 Affordable housing tax credit investments $ 54,909 $ 50,347 Unfunded commitments 28,439 22,282 Commitments are funded when capital calls are made by the general partner. Park expects that the current commitments will be funded between 2019 and 2029. During the three months ended September 30, 2019 and 2018, Park recognized amortization expense of $1.8 million and $1.9 million , respectively, which was included within the provision for income taxes. During the nine months ended September 30, 2019 and 2018, Park recognized amortization expense of $5.4 million and $5.6 million , respectively, which was included within the provision for income taxes. Additionally, during the three months ended September 30, 2019 and 2018, Park recognized tax credits and other benefits from its affordable housing tax credit investments of $2.6 million and $2.0 million , respectively, and during each of the nine months ended September 30, 2019 and 2018, Park recognized tax credits and other benefits from its affordable housing tax credit investments of $6.9 million

Other Real Estate Owned

Other Real Estate Owned	9 Months Ended
	Sep. 30, 2019
Other Real Estate Owned [Abstract]
Other Real Estate Owned	Foreclosed and Repossessed Assets Park typically transfers a loan to other real estate owned at the time that Park takes deed/title to the real estate property asset. The carrying amounts of foreclosed real estate properties held at September 30, 2019 and December 31, 2018 are listed below, as well as the recorded investment of loans secured by residential real estate properties for which formal foreclosure proceedings were in process at those dates. (in thousands) September 30, 2019 December 31, 2018 OREO: Commercial real estate $ 2,385 $ 2,359 Construction real estate 380 1,108 Residential real estate 1,014 836 Total OREO $ 3,779 $ 4,303 Loans in process of foreclosure: Residential real estate $ 2,499 $ 2,346 In addition to real estate, Park may also repossess different types of collateral. At both September 30, 2019 and December 31, 2018 , Park had $4.0 million

Loan Servicing

Loan Servicing	9 Months Ended
	Sep. 30, 2019
Transfers and Servicing of Financial Assets [Abstract]
Loan Servicing	Loan Servicing Park serviced sold mortgage loans of $1.41 billion at September 30, 2019, $1.39 billion at December 31, 2018 and $1.38 billion at September 30, 2018 . At September 30, 2019 , $2.4 million of the sold mortgage loans were sold with recourse, compared to $2.5 million at December 31, 2018 and $2.6 million at September 30, 2018 . Management closely monitors the delinquency rates on the mortgage loans sold with recourse. At September 30, 2019 and December 31, 2018, management had established reserves of $26,000 and $60,000 , respectively, to account for expected losses on loan repurchases. When Park sells mortgage loans with servicing rights retained, these 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 with respect to the underlying loan. At the end of each reporting period, the carrying value of MSRs is assessed for impairment with a comparison to fair value. MSRs are carried at the lower of their amortized cost or fair value. The amortization of MSRs is included within other service income in the consolidated condensed statements of income. Activity for MSRs and the related valuation allowance follows: Three Months Ended Nine Months Ended (In thousands) 2019 2018 2019 2018 Mortgage servicing rights: Carrying amount, net, beginning of period $ 10,104 $ 10,077 $ 10,178 $ 9,688 Additions 722 432 1,462 1,208 Amortization (534 ) (387 ) (1,259 ) (1,156 ) Changes in valuation allowance (332 ) (26 ) (421 ) 356 Carrying amount, net, end of period $ 9,960 $ 10,096 $ 9,960 $ 10,096 Valuation allowance: Beginning of period $ 321 $ 248 $ 232 $ 630 Changes in valuation allowance 332 26 421 (356 ) End of period $ 653 $ 274 $ 653 $ 274 Servicing fees included in other service income were $0.9 million for each of the three months ended September 30, 2019 and 2018 and were $2.7 million for each of the nine months ended September 30, 2019 and 2018.

Leases

Leases	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Lessee, Operating Leases	Leases Park is a lessee in several noncancellable operating lease arrangements, primarily for retail branches, administrative and warehouse buildings, ATMs, and certain office equipment within its Ohio, North Carolina, South Carolina, and Kentucky markets. Certain of these leases contain renewal options for periods ranging from one to five years. Park’s leases generally do not include termination options for either party to the lease or restrictive financial or other covenants. Payments due under the lease contracts include fixed payments plus, for many of Park’s real estate leases, variable payments such as Park's proportionate share of property taxes, insurance, and common area maintenance. The Company adopted ASU 2016-02, Leases (ASC 842), using the modified retrospective method as of the date of adoption, January 1, 2019, as permitted by the amendments in ASU 2018-11. As a result, the Company was not required to adjust its comparative period financial information for effects of the adoption of the standard or make the new required lease disclosures for periods prior to the effective date. Upon adoption of this accounting guidance on January 1, 2019, Park recorded an initial ROU asset of $11.0 million , and a lease liability of $11.8 million , and reclassified an existing deferred rent liability of $0.6 million . The impact to the Company's retained earnings, net of the tax impact, was $143,000 . Management elected to adopt the package of transition practical expedients and, therefore, has not reassessed (1) whether existing or expired contracts contain a lease, (2) lease classification for existing or expired leases or (3) the accounting for initial direct costs that were previously capitalized. The Company did not elect the practical expedient to use hindsight for leases existing at the adoption date. Park elected the practical expedient, by class of underlying asset, to not separate non-lease components from the associated lease components. Additionally, Park has elected not to recognize ROU assets and lease liabilities for short-term leases that have a lease term of 12 months or less. The Company recognizes the lease payments associated with its short-term leases as an expense on a cash basis. Management determines if an arrangement is or contains a lease at contract inception. If an arrangement is determined to be or contain a lease, Park recognizes a ROU asset and a lease liability at the lease commencement date. Park’s lease liability is initially and subsequently measured at the present value of the unpaid lease payments at the lease commencement date. Key estimates and judgments related to the lease liability include how management determines (1) the discount rate it uses to discount the unpaid lease payments to present value, (2) the lease term, and (3) lease payments. • ASC 842 requires a lessee to discount its unpaid lease payments using the interest rate implicit in the lease or, if that rate cannot be readily determined, its incremental borrowing rate. Generally, management cannot determine the interest rate implicit in the lease because it does not have access to the lessor’s estimated residual value or the amount of the lessor’s deferred initial direct costs. Therefore, Park utilizes its incremental borrowing rate as the discount rate for leases. Park’s incremental borrowing rate for a lease is the rate of interest it would have to pay on a collateralized basis to borrow an amount equal to the lease payments under similar terms. To manage its capital and liquidity needs, Park periodically obtains wholesale funding from the FHLB on an over-collateralized basis. The impact of utilizing an interest rate on an over-collateralized borrowing versus a fully collateralized borrowing is not material. Therefore, the FHLB yield curve was selected by management as a baseline to determine Park’s discount rates for leases. • The lease term for all of the Company’s leases includes the noncancellable period of the lease plus any additional periods covered by either Park's option to extend (or not to terminate) the lease that the Company is reasonably certain to exercise, or an option to extend (or not to terminate) the lease controlled by the lessor. If a lease contract contains multiple renewal options, management generally models lease cash flows through the first renewal option period unless the contract contains economic incentives or other conditions that increase the likelihood that additional renewals are reasonably certain to be exercised. • Lease payments included in the measurement of the lease liability are comprised of the following: – Fixed payments, including in-substance fixed payments, owed over the lease term; – For certain of Park's gross real estate leases, non-lease components such as real estate taxes, insurance, and common area maintenance; and – Variable lease payments that depend on an index or rate, initially measured using the index or rate at the lease commencement date. The ROU asset is initially measured at cost, which comprises the initial amount of the lease liability adjusted for lease payments made at or before the lease commencement date, plus any initial direct costs incurred less any lease incentives received. For operating leases, the ROU asset is subsequently measured throughout the lease term at the carrying amount of the lease liability, plus initial direct costs, plus (minus) any prepaid (accrued) lease payments, less the unamortized balance of lease incentives received. Lease expense for lease payments is recognized on a straight-line basis over the lease term. Park's operating lease ROU asset and lease liability are presented in “Operating lease right-of-use asset" and "Operating lease liability," respectively, on Park's consolidated condensed balance sheet. The carrying amount of Park's ROU asset and lease liability at September 30, 2019 were $14.4 million and $15.2 million , respectively. Park's operating lease expense is recorded in "Occupancy expense" on the Company's consolidated condensed statements of income. Other information related to operating leases for the three and nine months ended September 30, 2019 was as follows: (Dollars in thousands) Three Months Ended Nine Months Ended Lease cost Operating lease cost $ 831 $ 2,320 Sublease income (97 ) (285 ) Total lease cost $ 734 $ 2,035 Other information Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 843 $ 2,336 ROU assets obtained in exchange for new operating lease liabilities $ 342 $ 381 Reductions to ROU assets resulting from reductions to lease obligations $ (726 ) $ (2,021 ) At September 30, 2019 , Park's operating leases had a weighted average remaining term of 7.4 years and a weighted average discount rate of 3.1% . Undiscounted cash flows included in lease liabilities have expected contractual payments as follows: (in thousands) September 30, 2019 Three months ending December 31, 2019 $ 852 2020 2,868 2021 2,565 2022 2,406 2023 2,294 Thereafter 6,044 Total undiscounted minimum lease payments $ 17,029 Present value adjustment (1,838 ) Total lease liabilities $ 15,191

Repurchase Agreement Borrowings

Repurchase Agreement Borrowings	9 Months Ended
	Sep. 30, 2019
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. 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 consisted of customer accounts and securities which are pledged on an individual security basis. At September 30, 2019 and December 31, 2018 , Park's repurchase agreement borrowings totaled $161 million and $165 million , respectively. These borrowings were collateralized with U.S. government and agency securities with a fair value of $188 million and $272 million at September 30, 2019 and December 31, 2018 , respectively. Declines in the value of the collateral would require Park to pledge additional securities. As of September 30, 2019 and December 31, 2018 , Park had $785 million and $933 million , respectively, of available unpledged securities. The table below shows the remaining contractual maturity of repurchase agreements by collateral pledged at September 30, 2019 and December 31, 2018 : September 30, 2019 (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 $ 160,838 $ — $ — $ — $ 160,838 December 31, 2018 (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 $ 164,966 $ — $ — $ — $ 164,966

Derivatives

Derivatives	9 Months Ended
	Sep. 30, 2019
Derivative [Line Items]
Derivative Instruments and Hedging Activities Disclosure [Text Block]	Derivatives Park uses certain derivative instruments to meet the needs of its clients while managing the interest rate risk associated with certain transactions. Park does not use derivatives for speculative purposes. A summary of derivative instruments utilized by Park follows. Interest Rate Swaps Park utilizes interest rate swap agreements as part of its asset liability management strategy to help manage its interest rate risk position and as a means to meet the financing, interest rate and other risk management needs of qualifying commercial banking customers. The notional amount of the interest rate swaps does not represent the amount exchanged by the parties. The amount exchanged is determined by reference to the notional amount and the other terms of the individual interest rate swap agreements. Borrowing Derivatives : Interest rate swaps with notional amounts totaling $25.0 million as of September 30, 2019 were designated as cash flow hedges of certain FHLB advances. There were no interest rate swaps of FHLB advances as of December 31, 2018 . Loan Derivatives : In conjunction with the Carolina Alliance acquisition, Park acquired interest rate swaps related to certain commercial loans. These interest rate swaps were simultaneously hedged by offsetting interest rate swaps that Carolina Alliance executed with a third party, such that Carolina Alliance minimized its net interest rate risk exposure resulting from such transactions. These interest rate swaps had a notional amount totaling $36.0 million as of September 30, 2019 . There were no interest rate swaps of commercial loans as of December 31, 2018 . All of the Company's interest rate swaps were determined to be fully effective during the three and nine months ended September 30, 2019 . As such, no amount of ineffectiveness has been included in net income. Therefore, the aggregate fair value of the swaps is recorded in other assets and other liabilities with changes in fair value recorded in other comprehensive income. The amount included in accumulated other comprehensive loss would be reclassified to current earnings should the hedges no longer be considered effective. Park expects the hedges to remain fully effective during the remaining respective terms of the swaps. Summary information about Park's interest rate swaps as of September 30, 2019 follows: September 30, 2019 (In thousands, except weighted average data) Borrowing Derivatives Loan Derivatives Notional amounts $ 25,000 $ 35,961 Weighted average pay rates 2.595 % 4.692 % Weighted average receive rates 2.303 % 4.692 % Weighted average maturity (years) 2.7 10.4 Unrealized losses $ 704 $ — Interest expense recorded on swap transactions totaled $16,000 and $7,000 for the three -month and nine -month periods ended September 30, 2019 . No interest income or expense related to swap transactions was recorded during the three -month and nine -month periods ended September 30, 2018 . Interest Rate Swaps The following table presents the net gains (losses), net of income taxes, recorded in AOCI and the consolidated condensed statements of income related to interest rate swaps for the three -month and nine -month periods ended September 30, 2019 . Three Months Ended (In thousands) Amount of Gain (Loss) Recognized in OCI (Effective Portion) Amount of Gain (Loss) Reclassified from OCI to Interest Income Amount of Gain (Loss) Recognized in Other Non-interest Income (Ineffective Portion) Interest rate contracts $ (49 ) $ — $ — Nine Months Ended (In thousands) Amount of Gain (Loss) Recognized in OCI (Effective Portion) Amount of Gain (Loss) Reclassified from OCI to Interest Income Amount of Gain (Loss) Recognized in Other Non-interest Income (Ineffective Portion) Interest rate contracts $ (556 ) $ — $ — The following table reflects the interest rate swaps included in the consolidated condensed balance sheets as of September 30, 2019 . (In thousands) September 30, 2019 Notional Amount Fair Value Included in other assets: Borrowing derivatives - interest rate swaps related to FHLB advances $ — $ — Loan derivatives - instruments associated with loans Matched interest rate swaps with borrower 35,163 2,503 Matched interest rate swaps with counterparty 798 3 Total included in other assets $ 35,961 $ 2,506 Included in other liabilities: Borrowing derivatives - interest rate swaps related to FHLB advances $ 25,000 $ (704 ) Loan derivatives - instruments associated with loans Matched interest rate swaps with borrower 798 (3 ) Matched interest rate swaps with counterparty 35,163 (2,503 ) Total included in other liabilities $ 60,961 $ (3,210 ) Mortgage Banking Derivatives Commitments to fund mortgage loans (interest rate locks) to be sold into the secondary market and forward commitments for the future delivery of these mortgage loans are accounted for as free standing derivatives. In order to hedge the change in interest rates resulting from its commitments to fund the loans, the Company enters into forward commitments for the future delivery of mortgage loans when interest rate locks are entered into. These mortgage banking derivatives are not designated in hedge relationships. The fair value of the interest rate lock is recorded at the time the commitment to fund the mortgage loan is executed and is adjusted for the expected exercise of the commitment before the loan is funded. Fair values of these mortgage banking derivatives are estimated based on changes in mortgage interest rates from the date the interest on the loan is locked. Changes in the fair values of these derivatives are included in "Other service income" in the Condensed Consolidated Statements of Income. At September 30, 2019 and December 31, 2018 , Park had $28.8 million and $5.8 million , respectively, of interest rate lock commitments. The fair value of these mortgage banking derivatives was reflected by a derivative asset of $422,000 and $87,000 at September 30, 2019 and December 31, 2018 , respectively. Other Derivatives In connection with the sale of Park’s Class B Visa shares during 2009, Park entered into a swap agreement with the purchaser of the shares. The swap agreement adjusts for dilution in the conversion ratio of Class B Visa shares resulting from certain Visa litigation. At September 30, 2019 , the fair value of the swap liability of $226,000 was an estimate of the exposure based upon probability-weighted potential Visa litigation losses.

Other Comprehensive Income (Los

Other Comprehensive Income (Loss)	9 Months Ended
	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Loss Other comprehensive income (loss) components, net of income tax, are shown in the following table for the three-month and nine-month periods ended September 30, 2019 and 2018 : (in thousands) Changes in pension plan assets and benefit obligations Unrealized net holding loss on cash flow hedge Unrealized gains (losses) on AFS debt securities Total Beginning balance at July 1, 2019 $ (29,672 ) $ (507 ) $ 3,872 $ (26,307 ) Other comprehensive (loss) income before reclassifications (1) — (49 ) 13,889 13,840 Amounts reclassified from accumulated other comprehensive loss — — (147 ) (147 ) Net current period other comprehensive (loss) income — (49 ) 13,742 13,693 Ending balance at September 30, 2019 $ (29,672 ) $ (556 ) $ 17,614 $ (12,614 ) Beginning balance at July 1, 2018 $ (26,701 ) $ — $ (28,308 ) $ (55,009 ) Other comprehensive loss before reclassifications — — (5,141 ) (5,141 ) Net current period other comprehensive loss — — (5,141 ) (5,141 ) Ending balance at September 30, 2018 $ (26,701 ) $ — $ (33,449 ) $ (60,150 ) (in thousands) Changes in pension plan assets and benefit obligations Unrealized net holding loss on cash flow hedge Unrealized gains (losses) on AFS debt securities Total Beginning balance at January 1, 2019 $ (29,672 ) $ — $ (20,116 ) $ (49,788 ) Other comprehensive (loss) income before reclassifications (1) — (556 ) 37,397 36,841 Amounts reclassified from accumulated other comprehensive loss — — 333 333 Net current period other comprehensive (loss) income — (556 ) 37,730 37,174 Ending balance at September 30, 2019 $ (29,672 ) $ (556 ) $ 17,614 $ (12,614 ) Beginning balance at January 1, 2018, as previously presented $ (23,526 ) $ — $ (2,928 ) $ (26,454 ) Cumulative effect of change in accounting principle for marketable equity securities, net of tax — — (995 ) (995 ) Beginning balance at January 1, 2018, as adjusted (23,526 ) — (3,923 ) (27,449 ) Reclassification of disproportionate income tax effects (3,175 ) — (631 ) (3,806 ) Net current period activity Other comprehensive loss before reclassifications — — (30,919 ) (30,919 ) Amounts reclassified from accumulated other comprehensive loss — — 2,024 2,024 Net current period other comprehensive loss — — (28,895 ) (28,895 ) Ending balance at September 30, 2018 $ (26,701 ) $ — $ (33,449 ) $ (60,150 ) (1) During the three-month and nine-month periods ended September 30, 2019, Park transferred HTM securities with a fair value of $373.9 million to AFS classification. The transfer occurred at fair value and had a related unrealized gain of $24.2 million ( $19.1 million net of taxes), recorded in other comprehensive income. During the three-month period ended September 30, 2019, there was $186,000 ( $147,000 net of tax) reclassified out of accumulated other comprehensive loss due to net gains on the sale of AFS debt securities. During the nine-month period ended September 30, 2019, there was $421,000 ( $333,000 net of tax) reclassified out of accumulated other comprehensive loss due to net losses on the sale of AFS debt securities. During the nine-month period ended September 30, 2018, there was $2.6 million ( $2.0 million net of tax) reclassified out of accumulated other comprehensive loss due to net losses on the sale of AFS debt securities. All of these losses were recorded within "net gain (loss) on the sale of investment securities" on the consolidated condensed statements of income. During the three-month period ended September 30, 2018, there were no

Earnings Per Common Share

Earnings Per Common Share	9 Months Ended
	Sep. 30, 2019
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 and nine months ended September 30, 2019 and 2018 . Three Months Ended Nine Months Ended (In thousands, except share and per common share data) 2019 2018 2019 2018 Numerator: Net income $ 31,146 $ 24,762 $ 78,764 $ 84,126 Denominator: Weighted-average common shares outstanding 16,382,798 15,686,542 16,198,294 15,420,135 Effect of dilutive PBRSUs and TBRSUs 92,943 146,192 89,401 140,531 Weighted-average common shares outstanding adjusted for the effect of dilutive PBRSUs and TBRSUs 16,475,741 15,832,734 16,287,695 15,560,666 Earnings per common share: Basic earnings per common share $ 1.90 $ 1.58 $ 4.86 $ 5.46 Diluted earnings per common share $ 1.89 $ 1.56 $ 4.84 $ 5.41 Park awarded 58,740 and 48,053 PBRSUs to certain employees during the nine months ended September 30, 2019 and 2018, respectively. No PBRSUs were awarded during either of the three months ended September 30, 2019 and 2018. On April 1, 2019, Park issued 1,037,205 common shares to complete its acquisition of Carolina Alliance and granted 15,700 TBRSUs to Carolina Alliance Division employees. These common shares are included in average common shares outstanding beginning on that date. Park repurchased 84,603 and 421,253 common shares during the three and nine months ended September 30, 2019, respectively, to fund the PBRSUs, TBRSUs and common shares to be awarded to directors of Park and to directors of Park's subsidiary PNB (and its divisions) and pursuant to Park's previously announced stock repurchase authorizations. Park repurchased 50,000 common shares to fund the PBRSUs, TBRSUs and common shares to be awarded to directors of Park and to directors of Park's subsidiary PNB (and its divisions) during the nine months ended September 30, 2018. No common shares were repurchased during the three months ended September 30, 2018.

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2019
Segment Reporting [Abstract]
Segment Information	Segment Information The Corporation is a financial holding company headquartered in Newark, Ohio. The reportable segments for the Corporation are its chartered national bank subsidiary, PNB (headquartered in Newark, Ohio), and Guardian Financial Services Company. "All Other", which primarily consists of Park as the "Parent Company" and SE Property Holdings, LLC, is shown to reconcile the segment totals to the consolidated condensed statements of income. 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 two reportable segments, as: (i) discrete financial information is available for each reportable segment and (ii) the segments are aligned with internal reporting to Park’s Chief Executive Officer, who is the chief operating decision maker. Operating Results for the three months ended September 30, 2019 (In thousands) PNB GFSC All Other Total Net interest income (expense) $ 76,180 $ 1,244 $ (323 ) $ 77,101 Provision for (recovery of) loan losses 2,320 143 (496 ) 1,967 Other income 24,842 59 3,235 28,136 Other expense 60,943 902 3,893 65,738 Income (loss) before income taxes $ 37,759 $ 258 $ (485 ) $ 37,532 Income tax expense (benefit) 6,811 55 (480 ) 6,386 Net income (loss) $ 30,948 $ 203 $ (5 ) $ 31,146 Assets (as of September 30, 2019) $ 8,673,919 $ 27,481 $ 22,210 $ 8,723,610 Operating Results for the three months ended September 30, 2018 (In thousands) PNB GFSC All Other Total Net interest income $ 66,195 $ 1,252 $ 229 $ 67,676 Provision for (recovery of) loan losses 2,935 183 (178 ) 2,940 Other income 22,559 63 1,442 24,064 Other expense 51,982 810 6,524 59,316 Income (loss) before income taxes $ 33,837 $ 322 $ (4,675 ) $ 29,484 Income tax expense (benefit) 5,981 68 (1,327 ) 4,722 Net income (loss) $ 27,856 $ 254 $ (3,348 ) $ 24,762 Assets (as of September 30, 2018) $ 7,707,474 $ 28,551 $ 20,466 $ 7,756,491 Operating Results for the nine months ended September 30, 2019 (In thousands) PNB GFSC All Other Total Net interest income (expense) $ 217,355 $ 3,786 $ (413 ) $ 220,728 Provision for (recovery of) loan losses 6,563 458 (637 ) 6,384 Other income 68,224 142 4,603 72,969 Other expense 172,931 2,638 17,188 192,757 Income (loss) before income taxes $ 106,085 $ 832 $ (12,361 ) $ 94,556 Income tax expense (benefit) 19,063 179 (3,450 ) 15,792 Net income (loss) $ 87,022 $ 653 $ (8,911 ) $ 78,764 Operating Results for the nine months ended September 30, 2018 (In thousands) PNB GFSC All Other Total Net interest income $ 190,319 $ 3,818 $ 3,131 $ 197,268 Provision for (recovery of) loan losses 4,491 773 (678 ) 4,586 Other income 64,544 135 9,530 74,209 Other expense 149,152 2,412 14,594 166,158 Income (loss) before income taxes $ 101,220 $ 768 $ (1,255 ) $ 100,733 Income tax expense (benefit) 17,822 162 (1,377 ) 16,607 Net income $ 83,398 $ 606 $ 122 $ 84,126 The operating results in the “All Other” column are used to reconcile the segment totals to the consolidated condensed statements of income for the three-month and nine-month periods ended September 30, 2019 and 2018 . The reconciling amounts for consolidated total assets for the periods ended September 30, 2019 and 2018 consisted of the elimination of intersegment borrowings and the assets of the Parent Company and SEPH which were not eliminated.

Share Based Compensation

Share Based Compensation	9 Months Ended
	Sep. 30, 2019
Share-based Payment Arrangement [Abstract]
Share Based Compensation	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 made equity-based awards and cash-based awards available for grant to participants (who could have been employees or non-employee directors) in the form of incentive stock options, nonqualified stock options, SARs, restricted common shares (“Restricted Stock”), restricted stock unit awards that may be settled in common shares, cash or a combination of the two (“Restricted Stock Units”), unrestricted common shares (“Other Stock-Based Awards”) and cash-based awards. Under the 2013 Incentive Plan, 600,000 common shares were authorized to be delivered in connection with grants under the 2013 Incentive Plan. The common shares to be delivered under the 2013 Incentive Plan are to 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. As of September 30, 2019, there were 60,805 common shares subject to PBRSUs issued under the 2013 Incentive Plan, which represented the only awards outstanding under the 2013 Incentive Plan. The Park National Corporation 2017 Long-Term Incentive Plan for Employees (the "2017 Employees LTIP") was adopted by the Board of Directors of Park on January 23, 2017 and was approved by Park's shareholders at the Annual Meeting of Shareholders on April 24, 2017. The 2017 Employees LTIP makes equity-based awards and cash-based awards available for grant to employee participants in the form of incentive stock options, nonqualified stock options, SARs, Restricted Stock, Restricted Stock Units, Other Stock-Based Awards and cash-based awards. Under the 2017 Employees LTIP, 750,000 common shares are authorized to be delivered in connection with grants under the 2017 Employees LTIP. The common shares to be delivered under the 2017 Employees LTIP are to 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. At September 30, 2019, 616,083 common shares were available for future grants under the 2017 Employees LTIP. The Park National Corporation 2017 Long-Term Incentive Plan for Non-Employee Directors (the "2017 Non-Employee Directors LTIP") was adopted by the Board of Directors of Park on January 23, 2017 and was approved by Park's shareholders at the Annual Meeting of Shareholders on April 24, 2017. The 2017 Non-Employee Directors LTIP makes equity-based awards and cash-based awards available for grant to non-employee director participants in the form of nonqualified stock options, SARs, Restricted Stock, Restricted Stock Units, Other Stock-Based Awards, and cash-based awards. Under the 2017 Non-Employee Directors LTIP, 150,000 common shares are authorized to be delivered in connection with grants under the 2017 Non-Employee Directors LTIP. The common shares to be delivered under the 2017 Non-Employee Directors LTIP are to 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. At September 30, 2019, 127,200 common shares were available for future grants under the 2017 Non-Employee Directors LTIP. The 2017 Employees LTIP and the 2017 Non-Employee Directors LTIP have replaced the provisions of the 2013 Incentive Plan with respect to the grant of future awards. As a result of the approval of the 2017 Employees LTIP and the 2017 Non-Employee Directors LTIP, Park has not granted and will not grant any additional awards under the 2013 Incentive Plan after April 24, 2017. Awards made under the 2013 Incentive Plan prior to April 24, 2017 will remain in effect in accordance with their respective terms. There were no awards granted during the three months ended September 30, 2019. During the nine months ended September 30, 2019, the Compensation Committee of the Board of Directors of Park granted awards of TBRSUs, under the 2017 Employees LTIP, covering an aggregate of 15,700 shares to Carolina Alliance Bank Division employees and granted awards of PBRSUs, under the 2017 Employees LTIP, covering an aggregate of 58,740 common shares to certain employees of Park and its subsidiaries. During the nine months ended September 30, 2018, the Compensation Committee of the Board of Directors of Park granted awards of PBRSUs, under the 2017 Employees LTIP, covering an aggregate of 48,053 common shares to certain employees of Park and its subsidiaries. Additionally, on July 1, 2018, Park granted 13,637 TBRSUs to NewDominion Bank Division employees. The number of PBRSUs earned or settled will depend on the level of achievement with respect to certain performance criteria and are also subject to subsequent service-based vesting. The number of TBRSUs earned or settled are subject to service-based vesting. A summary of changes in the common shares subject to nonvested PBRSUs and TBRSUs for the nine months ended September 30, 2019 follows: Common shares subject to PBRSUs and TBRSUs Nonvested at January 1, 2019 152,631 Granted 74,440 Vested (27,719 ) Forfeited (1,262 ) Adjustment for performance conditions of PBRSUs (1) (3,368 ) Nonvested at September 30, 2019 (2) 194,722 (1) The number of PBRSUs earned depends on the level of achievement with respect to certain performance criteria. Adjustment herein represents the difference between the maximum number of common shares which could be earned and the actual number earned for those PBRSUs as to which the performance period was completed. (2) Nonvested amount herein represents the maximum number of nonvested PBRSUs and TBRSUs. As of September 30, 2019, 176,007 PBRSUs and TBRSUs are expected to vest. On March 31, 2019, an aggregate of 27,719 of the PBRSUs granted in 2015 and 2016 vested in full due to the level of achievement with respect to certain performance criteria and the satisfaction of the service-based vesting requirement. A total of 8,736 common shares were withheld to satisfy employee income tax withholding obligations. This resulted in a net number of 18,983 common shares being issued to employees of Park. On March 31, 2018, 18,800 of the PBRSUs granted in 2014 and 2015 vested in full due to the level of achievement with respect to certain performance criteria and the satisfaction of the service-based vesting requirement. A total of 5,879 common shares were withheld to satisfy employee income tax withholding obligations. This resulted in a net number of 12,921 common shares being issued to employees of Park. Share-based compensation expense of $1.2 million and $1.0 million was recognized for the three-month periods ended September 30, 2019 and 2018, respectively, and $3.8 million and $3.1 million was recognized for the nine-month periods ended September 30, 2019 and 2018, respectively. The following table details expected additional share-based compensation expense related to PBRSUs and TBRSUs outstanding as of September 30, 2019: (In thousands) Three months ending December 31, 2019 $ 1,287 2020 4,047 2021 2,388 2022 1,038 2023 163 Total $ 8,923

Benefit Plan

Benefit Plan	9 Months Ended
	Sep. 30, 2019
Defined Benefit Plan [Abstract]
Benefit Plan	Benefit Plans Park has a noncontributory defined benefit pension plan (the "Pension Plan") covering substantially all of its employees. The Pension Plan provides benefits based on an employee’s years of service and compensation. There were no Pension Plan contributions for any of the three-month or nine-month periods ended September 30, 2019 and 2018 . The following table shows the components of net periodic pension benefit expense (income): Three Months Ended Nine Months Ended Affected Line Item in the Consolidated Condensed Statements of Income (In thousands) 2019 2018 2019 2018 Service cost $ 1,468 $ 1,637 $ 4,404 $ 4,911 Employee benefits Interest cost 1,373 1,309 4,119 3,927 Other components of net periodic pension benefit income Expected return on plan assets (3,026 ) (3,354 ) (9,078 ) (10,062 ) Other components of net Recognized net actuarial loss 470 340 1,410 1,020 Other components of net Net periodic pension benefit expense (income) $ 285 $ (68 ) $ 855 $ (204 ) Park has entered into Supplemental Executive Retirement Plan Agreements (the “SERP Agreements”) with certain key officers of the Corporation and its subsidiaries which provide defined pension benefits in excess of limits imposed by federal tax law. The expense for the Corporation related to the SERP Agreements for the three months and nine months ended September 30, 2019 and 2018 was as follows: Three Months Ended Nine Months Ended Affected Line Item in the Consolidated (In thousands) 2019 2018 2019 2018 Service cost $ 202 $ 157 $ 604 $ 635 Employee benefits Interest cost 165 188 495 349 Miscellaneous expense Total SERP expense $ 367 $ 345 $ 1,099 $ 984

Fair Value

Fair Value	9 Months Ended
	Sep. 30, 2019
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 (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction 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 under 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 September 30, 2019 using: (In thousands) Level 1 Level 2 Level 3 Balance at September 30, 2019 Assets Investment securities: Obligations of states and political subdivisions — 321,905 321,905 U.S. Government sponsored entities’ asset-backed securities — 938,381 — 938,381 Equity securities 1,451 — 438 1,889 Mortgage loans held for sale — 21,986 — 21,986 Mortgage IRLCs — 422 — 422 Loan interest rate swaps — 2,506 — 2,506 Liabilities Fair value swap $ — $ — $ 226 $ 226 Borrowing interest rate swap — 704 — 704 Loan interest rate swaps — 2,506 — 2,506 Fair Value Measurements at December 31, 2018 using: (In thousands) Level 1 Level 2 Level 3 Balance at December 31, 2018 Assets Investment securities: U.S. Government sponsored entities’ asset-backed securities $ — $ 1,003,421 $ — $ 1,003,421 Equity securities 1,225 — 424 1,649 Mortgage loans held for sale — 4,158 — 4,158 Mortgage IRLCs — 87 — 87 Liabilities Fair value swap $ — $ — $ 226 $ 226 There were no transfers between Level 1 and Level 2 during any of the three -month or nine-month periods ended September 30, 2019 or 2018 . 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 the fair value of the financial assets and liabilities discussed above: Interest rate swaps: The fair values of interest rate swaps are based on valuation models using observable market data as of the measurement date (Level 2). Investment securities: Fair values for investment securities are based on quoted market prices, where available (Level 1). If quoted market prices are not available, fair values are based on quoted market prices of comparable instruments (Level 2). For securities where quoted prices or market prices of similar securities are not available, fair values are calculated using discounted cash flows (Level 3). 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: Mortgage 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 tables below present a reconciliation of the beginning and ending balances of the Level 3 inputs for the three and nine months ended September 30, 2019 and 2018 , for financial instruments measured on a recurring basis and classified as Level 3: Level 3 Fair Value Measurements Three months ended September 30, 2019 and 2018 (In thousands) Equity Securities Fair value swap Balance at July 1, 2019 $ 433 $ (226 ) Total gains/(losses) Included in other income 5 — Balance at September 30, 2019 $ 438 $ (226 ) Balance at July 1, 2018 $ 420 $ (226 ) Total gains/(losses) Included in other income 4 — Balance at September 30, 2018 $ 424 $ (226 ) Level 3 Fair Value Measurements Nine months ended September 30, 2019 and 2018 (In thousands) Equity Securities Fair value swap Balance at January 1, 2019 $ 424 $ (226 ) Total gains/(losses) Included in other income 14 — Balance at September 30, 2019 $ 438 $ (226 ) Balance at January 1, 2018 $ 417 $ (226 ) Total gains/(losses) Included in other income 7 — Balance at September 30, 2018 $ 424 $ (226 ) 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. Collateral dependent 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 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. 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: 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 received by the Company: real estate appraisals, income approach appraisals, and lot development loan appraisals. 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. Other repossessed assets: Other repossessed assets are initially recorded at fair value less costs to sell when acquired. The carrying value of other repossessed assets 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. As of September 30, 2019 and December 31, 2018 , other repossessed assets primarily consisted of aircraft acquired as part of a loan workout. Fair value is based on Aircraft Bluebook and VREF Aircraft Value Reference values based on the model of aircraft and adjustments for flight hours, features and other variables. Such adjustments result in a Level 3 classification of the inputs for determining fair value. 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. As of September 30, 2019 , there were no PCI loans carried at fair value. 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 with respect to the property's value subsequent to the initial measurement. Fair Value Measurements at September 30, 2019 using: (In thousands) Level 1 Level 2 Level 3 Balance at September 30, 2019 Impaired loans recorded at fair value: Commercial real estate $ — $ — $ 1,862 $ 1,862 Construction real estate — — 1,635 1,635 Residential real estate — — 182 182 Total impaired loans recorded at fair value $ — $ — $ 3,679 $ 3,679 MSRs $ — $ 7,462 $ — $ 7,462 OREO: Commercial real estate — — 2,385 2,385 Residential real estate — — 779 779 Total OREO recorded at fair value $ — $ — $ 3,164 $ 3,164 Other repossessed assets $ — $ — $ 3,598 $ 3,598 Fair Value Measurements at December 31, 2018 using: (In thousands) Level 1 Level 2 Level 3 Balance at December 31, 2018 Impaired loans recorded at fair value: Commercial real estate $ — $ — $ 4,059 $ 4,059 Construction real estate — — 1,635 1,635 Residential real estate — — 705 705 Total impaired loans recorded at fair value $ — $ — $ 6,399 $ 6,399 MSRs $ — $ 1,169 $ — $ 1,169 OREO: Commercial real estate — — 2,295 2,295 Construction real estate — — 729 729 Residential real estate — — 650 650 Total OREO recorded at fair value $ — $ — $ 3,674 $ 3,674 Other repossessed assets $ — $ — $ 3,464 $ 3,464 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. September 30, 2019 (In thousands) Recorded Investment Prior Charge-Offs Specific Valuation Allowance Carrying Balance Impaired loans recorded at fair value $ 3,820 $ 3,126 $ 141 $ 3,679 Remaining impaired loans 70,658 2,507 2,942 67,716 Total impaired loans $ 74,478 $ 5,633 $ 3,083 $ 71,395 December 31, 2018 (In thousands) Recorded Investment Prior Charge-Offs Specific Valuation Allowance Carrying Balance Impaired loans recorded at fair value $ 6,503 $ 3,630 $ 104 $ 6,399 Remaining impaired loans 41,641 7,616 2,169 39,472 Total impaired loans $ 48,144 $ 11,246 $ 2,273 $ 45,871 The expense from credit adjustments related to impaired loans carried at fair value was $0.1 million for both of the three -month periods ended September 30, 2019 and 2018 . The expense from credit adjustments related to impaired loans carried at fair value during the nine months ended September 30, 2019 and 2018 was $0.2 million and $0.3 million , respectively. MSRs totaled $10.0 million at September 30, 2019 . Of this $10.0 million MSR carrying balance, $7.5 million was recorded at fair value and included a valuation allowance of $0.7 million . The remaining $2.5 million was recorded at cost, as the fair value of the MSRs exceeded cost at September 30, 2019 . At December 31, 2018 , MSRs totaled $10.2 million . Of this $10.2 million MSR carrying balance, $1.2 million was recorded at fair value and included a valuation allowance of $0.2 million . The remaining $9.0 million was recorded at cost, as the fair value exceeded cost at December 31, 2018 . The expense related to MSRs carried at fair value during the three months ended September 30, 2019 and 2018 was $332,000 and $26,000 , respectively. The expense (income) related to MSRs carried at fair value during the nine months ended September 30, 2019 and 2018 was $421,000 and $(356,000) , respectively. Total OREO held by Park at September 30, 2019 and December 31, 2018 was $3.8 million and $4.3 million , respectively. Approximately 84% and 85% of OREO held by Park at September 30, 2019 and December 31, 2018 , respectively, was carried at fair value due to fair value adjustments made subsequent to the initial OREO measurement. At September 30, 2019 and December 31, 2018 , OREO held at fair value, less estimated selling costs, amounted to $3.2 million and $3.7 million , respectively. The net expense related to OREO fair value adjustments was $41,000 and $77,000 for the three -month periods ended September 30, 2019 and 2018 , respectively. The net expense related to OREO fair value adjustments was $123,000 and $398,000 for the nine -month periods ended September 30, 2019 and 2018 , respectively. Other repossessed assets totaled $4.0 million at September 30, 2019 , of which $3.6 million was recorded at fair value. Other repossessed assets totaled $4.0 million at December 31, 2018 , of which $3.5 million was recorded at fair value. There was no expense related to fair value adjustments on other repossessed assets for the three -month and nine -month periods ended September 30, 2019 . Expense related to fair value adjustments on other repossessed assets for each of the three -month periods and nine -month periods ended September 30, 2018 was $0.3 million . The following tables present qualitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at September 30, 2019 and December 31, 2018 : September 30, 2019 (In thousands) Fair Value Valuation Technique Unobservable Input(s) Range (Weighted Average) Impaired loans: Commercial real estate $ 1,861 Sales comparison approach Adj to comparables 0.0% - 89.6% (28.1%) Income approach Capitalization rate 10.6% (10.6%) Cost approach Accumulated depreciation 60.0% - 93.1% (72.4%) Construction real estate $ 1,635 Sales comparison approach Adj to comparables 0.1% - 72.4% (38.5%) Residential real estate $ 182 Sales comparison approach Adj to comparables 0.0% - 53.5% (13.8%) Other real estate owned: Commercial real estate $ 2,385 Sales comparison approach Adj to comparables 0.9% - 68.4% (31.1%) Income approach Capitalization rate 10.0% - 13.0% (12.8%) Residential real estate $ 779 Sales comparison approach Adj to comparables 1.9% - 54.6% (34.6%) Balance at December 31, 2018 (In thousands) Fair Value Valuation Technique Unobservable Input(s) Range (Weighted Average) Impaired loans: Commercial real estate $ 4,059 Sales comparison approach Adj to comparables 0.0% - 107.5% (31.1%) Income approach Capitalization rate 9.5% - 10.8% (10.6%) Cost approach Accumulated depreciation 4.2% - 90.1% (11.0%) Construction real estate $ 1,635 Sales comparison approach Adj to comparables 5.0% - 90.0% (26.1%) Residential real estate $ 705 Sales comparison approach Adj to comparables 0.0% - 40.0% (13.2%) Income approach Capitalization rate 10.5% (10.5%) Other real estate owned: Commercial real estate $ 2,295 Sales comparison approach Adj to comparables 0.9% - 68.4% (34.7%) Income approach Capitalization rate 13.0% (13.0%) Construction real estate $ 729 Sales comparison approach Adj to comparables 0.0% - 45.0% (21.7%) Residential real estate $ 650 Sales comparison approach Adj to comparables 30.4% - 54.6% (42.5%) Assets Measured at Net Asset Value: Park's portfolio of equity investments in limited partnerships which provide mezzanine funding ("Partnership Investments") are valued using the NAV practical expedient in accordance with ASC 820. As of September 30, 2019 and December 31, 2018 , Park had Partnership Investments with a NAV of $12.4 million and $11.0 million , respectively. As of September 30, 2019 and December 31, 2018 , Park had $3.6 million and $6.1 million , respectively, in unfunded commitments related to these Partnership Investments. For the three -month periods ended September 30, 2019 and 2018 , Park recognized income of $3.3 million and $0.4 million , respectively, related to these Partnership Investments. For the nine -month periods ended September 30, 2019 and 2018 , Park recognized income of $5.1 million and $1.2 million , respectively, related to these Partnership Investments. The fair value of certain financial instruments at September 30, 2019 and December 31, 2018 , was as follows: September 30, 2019 Fair Value Measurements (In thousands) Carrying value Level 1 Level 2 Level 3 Total fair value Financial assets: Cash and money market instruments $ 372,726 $ 372,726 $ — $ — $ 372,726 Investment securities (1) 1,260,286 — 1,260,286 — 1,260,286 Other investment securities (2) 1,889 1,451 — 438 1,889 Loans held for sale 21,986 — 21,986 — 21,986 Mortgage IRLCs 422 — 422 — 422 Impaired loans carried at fair value 3,678 — — 3,679 3,679 Other loans, net 6,321,708 — — 6,325,294 6,325,294 Loans receivable, net $ 6,347,794 $ — $ 22,408 $ 6,328,973 $ 6,351,381 Financial liabilities: Time deposits 1,127,366 — 1,133,648 — 1,133,648 Other 5,271 5,271 — — 5,271 Deposits (excluding demand deposits) $ 1,132,637 $ 5,271 $ 1,133,648 $ — $ 1,138,919 Short-term borrowings $ 185,838 $ — $ 185,838 $ — $ 185,838 Long-term debt 297,500 — 307,047 — 307,047 Subordinated notes 15,000 — 13,810 — 13,810 Derivative financial instruments - assets: Loan interest rate swaps $ 2,506 $ — $ 2,506 $ — $ 2,506 Derivative financial instruments - liabilities: Fair value swap $ 226 $ — $ — $ 226 $ 226 Borrowing interest rate swap 704 — 704 — 704 Loan interest rate swaps 2,506 — 2,506 — 2,506 (1) Includes AFS debt securities. (2) Excludes FHLB stock and FRB stock which are carried at their respective redemption values, investment securities accounted for at modified cost as these investments do not have a readily determinable fair value, and Partnership Investments valued using the NAV practical expedient. December 31, 2018 Fair Value Measurements (In thousands) Carrying value Level 1 Level 2 Level 3 Total fair value Financial assets: Cash and money market instruments $ 167,214 $ 167,214 $ — $ — $ 167,214 Investment securities (1) 1,355,229 — 1,354,843 — 1,354,843 Other investment securities (2) 1,649 1,225 — 424 1,649 Loans held for sale 4,158 — 4,158 — 4,158 Mortgage IRLCs 87 — 87 — 87 Impaired loans carried at fair value 6,399 — — 6,399 6,399 Other loans, net 5,629,976 — — 5,570,136 5,570,136 Loans receivable, net $ 5,640,620 $ — $ 4,245 $ 5,576,535 $ 5,580,780 Financial liabilities: Time deposits $ 1,043,177 $ — $ 1,044,620 — $ 1,044,620 Other 1,267 1,267 — — 1,267 Deposits (excluding demand deposits) $ 1,044,444 $ 1,267 $ 1,044,620 $ — $ 1,045,887 Short-term borrowings $ 221,966 $ — $ 221,966 $ — $ 221,966 Long-term debt 400,000 — 400,203 — 400,203 Subordinated notes 15,000 — 12,959 — 12,959 Derivative financial instruments: Fair value swap $ 226 $ — $ — $ 226 $ 226 (1) Includes AFS debt securities and HTM debt securities. (2) Excludes FHLB stock and FRB stock which are carried at their respective redemption values, investment securities accounted for at modified cost as these investments do not have a readily determinable fair value, and Partnership Investments valued using the NAV practical expedient.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	Revenue from Contracts with Customers All of Park's revenue from contracts with customers within the scope of ASC 606 is recognized within "Other income" in the Consolidated Condensed Statements of Income. The following table presents the Corporation's sources of other income by revenue stream and operating segment for the three -month and nine -month periods ended September 30, 2019 and September 30, 2018 . Three Months Ended Revenue by Operating Segment (in thousands) PNB GFSC All Other Total Income from fiduciary activities Personal trust and agency accounts $ 2,151 $ — $ — $ 2,151 Employee benefit and retirement-related accounts 1,753 — — 1,753 Investment management and investment advisory agency accounts 2,547 — — 2,547 Other 391 — — 391 Service charges on deposit accounts Non-sufficient funds (NSF) fees 1,911 — — 1,911 Demand deposit account (DDA) charges 784 — — 784 Other 169 — — 169 Other service income (1) Credit card 586 1 — 587 HELOC 71 — 1 72 Installment 62 — (88 ) (26 ) Real estate 3,226 — (1 ) 3,225 Commercial 262 — 140 402 Debit card fee income 5,313 — — 5,313 Bank owned life insurance income (2) 1,021 — 86 1,107 ATM fees 482 — — 482 OREO valuation adjustments (2) (41 ) — — (41 ) Loss on sale of OREO, net (53 ) — — (53 ) Net gain on sale of investment securities (2) 186 — — 186 Gain on equity securities, net (2) 240 — 3,095 3,335 Other components of net periodic pension benefit income (2) 1,147 13 23 1,183 Miscellaneous (3) 2,634 45 (21 ) 2,658 Total other income $ 24,842 $ 59 $ 3,235 $ 28,136 (1) Of the $4.3 million of aggregate revenue included within "Other service income", approximately $1.3 million is within the scope of ASC 606, with the remaining $3.0 million consisting primarily of residential real estate loan fees which are out of scope. (2) Not within the scope of ASC 606. (3) "Miscellaneous" income includes brokerage income, safe deposit box rentals, and miscellaneous bank fees totaling $2.7 million , all of which are within scope of ASC 606. Three Months Ended Revenue by Operating Segment (in thousands) PNB GFSC All Other Total Income from fiduciary activities Personal trust and agency accounts $ 1,994 $ — $ — $ 1,994 Employee benefit and retirement-related accounts 1,703 — — 1,703 Investment management and investment advisory agency accounts 2,353 — — 2,353 Other 368 — — 368 Service charges on deposit accounts Non-sufficient funds (NSF) fees 1,926 — — 1,926 Demand deposit account (DDA) charges 764 — — 764 Other 171 — — 171 Other service income (1) Credit card 592 6 — 598 HELOC 128 — — 128 Installment 60 — 6 66 Real estate 2,145 — — 2,145 Commercial 291 — 18 309 Debit card fee income 4,352 — — 4,352 Bank owned life insurance income (2) 960 — 1,625 2,585 ATM fees 500 — — 500 OREO valuation adjustments (2) (78 ) — 1 (77 ) Gain (loss) on sale of OREO, net 36 — (117 ) (81 ) Gain (loss) on equity securities, net (2) 228 — (139 ) 89 Other components of net periodic pension benefit income (2) 1,653 18 34 1,705 Miscellaneous (3) 2,413 39 14 2,466 Total other income $ 22,559 $ 63 $ 1,442 $ 24,064 (1) Of the $3.2 million of aggregate revenue included within "Other service income", approximately $1.1 million is within the scope of ASC 606, with the remaining $2.1 million consisting primarily of residential real estate loan fees which are out of scope. (2) Not within the scope of ASC 606. (3) "Miscellaneous" income includes brokerage income, safe deposit box rentals, and miscellaneous bank fees totaling $2.5 million , all of which are within scope of ASC 606. Nine Months Ended Revenue by Operating Segment (in thousands) PNB GFSC All Other Total Income from fiduciary activities Personal trust and agency accounts $ 6,757 $ — $ — $ 6,757 Employee benefit and retirement-related accounts 5,185 — — 5,185 Investment management and investment advisory agency accounts 7,421 — — 7,421 Other 1,137 — — 1,137 Service charges on deposit accounts Non-sufficient funds (NSF) fees 5,241 — — 5,241 Demand deposit account (DDA) charges 2,336 — — 2,336 Other 501 — — 501 Other service income (1) Credit card 1,785 5 — 1,790 HELOC 282 — 4 286 Installment 203 — (83 ) 120 Real estate 7,890 — (10 ) 7,880 Commercial 901 — 141 1,042 Debit card fee income 14,909 — — 14,909 Bank owned life insurance income (2) 3,116 — 283 3,399 ATM fees 1,382 — — 1,382 OREO valuation adjustments (2) (123 ) — — (123 ) Loss on sale of OREO, net (84 ) — (140 ) (224 ) Net loss on sale of investment securities (2) (421 ) — — (421 ) Gain on equity securities, net (2) 972 — 4,337 5,309 Other components of net periodic pension benefit income (2) 3,440 40 69 3,549 Miscellaneous (3) 5,394 97 2 5,493 Total other income $ 68,224 $ 142 $ 4,603 $ 72,969 (1) Of the $11.1 million of aggregate revenue included within "Other service income", approximately $4.0 million is within the scope of ASC 606, with the remaining $7.1 million consisting primarily of residential real estate loan fees which are out of scope. (2) Not within the scope of ASC 606. (3) "Miscellaneous" income includes brokerage income, safe deposit box rentals, and miscellaneous bank fees totaling $5.5 million , all of which are within scope of ASC 606. Nine Months Ended Revenue by Operating Segment (in thousands) PNB GFSC All Other Total Income from fiduciary activities Personal trust and agency accounts $ 6,383 $ — $ — $ 6,383 Employee benefit and retirement-related accounts 5,003 — — 5,003 Investment management and investment advisory agency accounts 6,936 — — 6,936 Other 1,157 — — 1,157 Service charges on deposit accounts Non-sufficient funds (NSF) fees 5,608 — — 5,608 Demand deposit account (DDA) charges 2,503 — — 2,503 Other 498 — — 498 Other service income (1) Credit card 1,652 20 — 1,672 HELOC 345 — — 345 Installment 197 — 6 203 Real estate 6,748 — — 6,748 Commercial 847 — 1,075 1,922 Debit card fee income 12,736 — — 12,736 Bank owned life insurance income (2) 2,822 — 1,803 4,625 ATM fees 1,534 — — 1,534 OREO valuation adjustments (2) (179 ) — (219 ) (398 ) Gain on sale of OREO, net 1,442 — 2,651 4,093 Net loss on sale of investment securities (2) (2,271 ) — — (2,271 ) Gain on equity securities, net (2) 520 — 4,113 4,633 Other components of net periodic pension benefit income (2) 4,957 56 102 5,115 Miscellaneous (3) 5,106 59 (1 ) 5,164 Total other income $ 64,544 $ 135 $ 9,530 $ 74,209 (1) Of the $10.9 million of aggregate revenue included within "Other service income", approximately $4.4 million is within the scope of ASC 606, with the remaining $6.5 million consisting primarily of residential real estate loan fees which are out of scope. (2) Not within the scope of ASC 606. (3) "Miscellaneous" income includes brokerage income, safe deposit box rentals, and miscellaneous bank fees totaling $5.2 million , all of which are within the scope of ASC 606 . A description of Park's revenue streams accounted for under ASC 606 follows: Income from fiduciary activities (gross) : Park earns fiduciary fee income and investment brokerage fees from its contracts with trust customers for various fiduciary and investment-related services. These fees are earned over time as the Company provides the contracted monthly and quarterly services and are generally assessed based on the market value of the trust assets. Service charges on deposit accounts and ATM fees : The Corporation earns fees from its deposit customers for transaction-based, account maintenance, and overdraft services. Transaction-based fees, which include services such as ATM use fees, stop payment charges, statement rendering, and ACH fees, are recognized at the time the transaction is executed as that is the point in time the Corporation fulfills the customer's request. Account maintenance fees, which relate primarily to monthly maintenance, are generally recognized at the end of the month, representing the period over which the Corporation satisfies the performance obligation. Overdraft fees are recognized at the point in time that the overdraft occurs. Service charges on deposits are withdrawn from the customer's account balance. Other service income : Other service income includes income from (1) the sale and servicing of loans sold to the secondary market, (2) incentive income from third-party credit card issuers, and (3) loan customers for various loan-related activities and services. These fees are generally recognized at a point in time following the completion of a loan sale or related service activity. Debit card fee income : Park earns interchange fees from debit cardholder transactions conducted primarily through the Visa payment network. Interchange fees from cardholder transactions represent a percentage of the underlying transaction value and are recognized daily, net of card network fees, concurrently with the transaction processing services provided to the cardholder. Gain or loss on sale of OREO, net

Business Combinations (Tables)

Business Combinations (Tables)	9 Months Ended
	Sep. 30, 2019
Business Acquisition [Line Items]
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	The following table summarizes the consideration paid for Carolina Alliance and the amounts of the assets acquired and liabilities assumed at their fair value: (in thousands) Consideration Cash $ 28,630 Park common shares 98,275 Fair value of total consideration transferred $ 126,905 Recognized amounts of identifiable assets acquired and liabilities assumed Cash and cash equivalents $ 23,799 Securities 97,606 Loans 578,577 Premises and equipment 8,337 Core deposit intangibles 10,251 Other assets 31,675 Total assets acquired 750,245 Deposits 632,649 Other liabilities 35,951 Total liabilities assumed 668,600 Net identifiable assets 81,645 Goodwill $ 45,260 The table below presents information with respect to the fair value of acquired loans as well as their book balance at the acquisition date. (in thousands) Book Balance Fair Value Commercial, financial and agricultural $ 79,537 $ 79,373 Commercial real estate 281,425 273,855 Construction real estate: Commercial 43,106 42,176 Mortgage 11,130 10,633 Residential real estate: Commercial 48,546 48,684 Mortgage 30,519 30,969 HELOC 40,227 39,526 Consumer 4,813 4,647 Leases 28,589 28,781 Purchased credit impaired 21,806 19,933 Total loans $ 589,698 $ 578,577 The following table summarizes the consideration paid for NewDominion and the amounts of the assets acquired and liabilities assumed at their fair value: (in thousands) Consideration Cash $ 30,684 Park common shares 48,519 Previous 8.55% investment in NewDominion 7,000 Fair value of total consideration transferred $ 86,203 Recognized amounts of identifiable assets acquired and liabilities assumed Cash and cash equivalents $ 42,954 Securities 1,954 Loans 272,753 Premises and equipment 940 Core deposit intangibles 6,249 Trade name intangible 1,300 Other assets 6,133 Total assets acquired 332,283 Deposits 284,231 Other liabilities 2,254 Total liabilities assumed 286,485 Net identifiable assets 45,798 Goodwill $ 40,405 The table below presents information with respect to the fair value of acquired loans as well as their book balance at the acquisition date. (in thousands) Book Balance Fair Value Commercial, financial and agricultural $ 19,246 $ 19,138 Commercial real estate 119,434 117,638 Construction real estate: Commercial 22,494 22,235 Mortgage 8,391 8,111 Residential real estate: Commercial 14,798 14,797 Mortgage 50,295 48,714 HELOC 37,651 36,688 Consumer 541 539 Purchased credit impaired 5,069 4,893 Total loans $ 277,919 $ 272,753
Business Acquisition, Pro Forma Information [Table Text Block]	The following table presents supplemental pro forma information as if the NewDominion and Carolina Alliance acquisitions had occurred as of January 1, 2018. The unaudited pro forma information includes adjustments for interest income on loans and securities acquired, amortization of intangibles arising from the respective transactions, depreciation expense on property acquired, interest expense on deposits acquired, and the related tax effects. The pro forma information is not necessarily indicative of the results of operations that would have occurred had the transactions been effected on the assumed date. Nine months ended September 30, (dollars in thousands, except per share data) 2019 2018 Net interest income $ 227,585 $ 225,753 Net income $ 85,720 $ 94,509 Basic earnings per share $ 5.18 $ 5.64 Diluted earnings per share $ 5.15 $ 5.59

Investment Securities (Tables)

Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Schedule Of Investment Securities	Investment securities at September 30, 2019 , were as follows: Debt Securities AFS (In thousands) Amortized Cost Gross Unrealized Holding Gains Gross Unrealized Holding Losses Estimated Fair Value Obligations of states and political subdivisions $ 303,522 $ 18,383 $ — $ 321,905 U.S. Government sponsored entities' asset-backed securities 934,468 10,373 6,460 938,381 Total $ 1,237,990 $ 28,756 $ 6,460 $ 1,260,286 Investment securities at December 31, 2018 , were as follows: Debt Securities AFS (In thousands) Amortized Cost Gross Gross Estimated Fair Value U.S. Government sponsored entities' asset-backed securities $ 1,028,883 $ 453 $ 25,915 $ 1,003,421 Total $ 1,028,883 $ 453 $ 25,915 $ 1,003,421 Debt Securities HTM (In thousands) Amortized Cost Gross Gross Estimated Fair Value Obligations of states and political subdivisions $ 305,278 $ 3,202 $ 2,672 $ 305,808 U.S. Government sponsored entities' asset-backed securities 46,530 87 1,003 45,614 Total $ 351,808 $ 3,289 $ 3,675 $ 351,422
Schedule Of Unrealized Loss On Securities	Investment securities with unrealized losses at September 30, 2019 , 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 losses Fair value Unrealized Fair value Unrealized Debt Securities AFS U.S. Government sponsored entities' asset-backed securities $ 251,414 $ 1,095 $ 181,807 $ 5,365 $ 433,221 $ 6,460 Total $ 251,414 $ 1,095 $ 181,807 $ 5,365 $ 433,221 $ 6,460 Investment securities with unrealized/unrecognized losses at December 31, 2018 , were as follows: Unrealized/unrecognized loss position for less than 12 months Unrealized/unrecognized loss position for 12 months or longer Total (In thousands) Fair value Unrealized/unrecognized Fair value Unrealized/unrecognized Fair Unrealized/unrecognized Debt Securities AFS U.S. Government sponsored entities' asset-backed securities $ 506,280 $ 5,998 $ 449,569 $ 19,917 $ 955,849 $ 25,915 Total $ 506,280 $ 5,998 $ 449,569 $ 19,917 $ 955,849 $ 25,915 Debt Securities HTM Obligations of states and political subdivisions $ 91,960 $ 1,095 $ 70,723 $ 1,577 $ 162,683 $ 2,672 U.S. Government sponsored entities' asset-backed securities 32,656 838 6,931 165 39,587 1,003 Total $ 124,616 $ 1,933 $ 77,654 $ 1,742 $ 202,270 $ 3,675
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 September 30, 2019 , are shown in the following table by contractual maturity, except for asset-backed securities, which are shown as a single total, due to the unpredictability of the timing of principal repayments. Securities AFS (In thousands) Amortized cost Fair value Tax equivalent yield (1) U.S. Government sponsored entities' asset-backed securities $ 934,468 $ 938,381 2.37 % Obligations of state and political subdivisions: Due five through ten years $ 3,998 $ 4,140 3.04 % Due over ten years 299,524 317,765 3.69 % Total (1) $ 303,522 $ 321,905 3.68 %

Other Investment Securities (Ta

Other Investment Securities (Tables)	9 Months Ended
	Sep. 30, 2019
Other Investment Securities [Abstract]
Schedule Of Other Investment Securities	The carrying amount of other investment securities at September 30, 2019 and December 31, 2018 was as follows: (In thousands) September 30, 2019 December 31, 2018 FHLB stock $ 33,424 $ 43,388 FRB stock 14,653 8,225 Equity investments carried at fair value 1,889 1,649 Equity investments carried at cost/modified cost (1) 2,689 2,589 Equity investments carried at net asset value 15,989 17,065 Total other investment securities $ 68,644 $ 72,916 (1) There have been no impairments, downward adjustments, or upward adjustments made to equity investments carried at modified cost.

Loans (Tables)

Loans (Tables)	9 Months Ended
	Sep. 30, 2019
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]
Composition Of Loan Portfolio By Class Of Loan	The composition of the loan portfolio, by class of loan, as of September 30, 2019 and December 31, 2018 was as follows: September 30, 2019 December 31, 2018 (In thousands) Loan Balance Accrued Interest Receivable Recorded Investment Loan Balance Accrued Interest Receivable Recorded Investment Commercial, financial and agricultural * $ 1,140,138 $ 5,404 $ 1,145,542 $ 1,072,786 $ 4,603 $ 1,077,389 Commercial real estate * 1,599,697 5,767 1,605,464 1,283,045 4,750 1,287,795 Construction real estate: Commercial 223,603 777 224,380 175,300 801 176,101 Mortgage 92,985 232 93,217 70,541 151 70,692 Installment 1,581 5 1,586 2,433 7 2,440 Residential real estate: Commercial 465,656 1,199 466,855 429,730 1,150 430,880 Mortgage 1,174,421 1,529 1,175,950 1,134,278 1,227 1,135,505 HELOC 231,007 1,185 232,192 215,283 1,159 216,442 Installment 13,027 34 13,061 14,327 36 14,363 Consumer 1,430,400 3,946 1,434,346 1,292,136 3,756 1,295,892 Leases 31,132 30 31,162 2,273 26 2,299 Total loans $ 6,403,647 $ 20,108 $ 6,423,755 $ 5,692,132 $ 17,666 $ 5,709,798 * Included within each of commercial, financial and agricultural loans and commercial real estate 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 TDRs, and loans past due 90 days or more and still accruing by class of loan as of September 30, 2019 and December 31, 2018 : September 30, 2019 (In thousands) Nonaccrual Loans Accruing TDRs Loans Past Due 90 Days or More and Accruing Total Nonperforming Loans Commercial, financial and agricultural $ 28,099 $ 3,430 $ — $ 31,529 Commercial real estate 36,663 2,136 625 39,424 Construction real estate: Commercial 1,786 82 235 2,103 Mortgage 27 7 — 34 Installment 73 6 12 91 Residential real estate: Commercial 2,224 14 — 2,238 Mortgage 15,367 8,821 1,641 25,829 HELOC 1,700 1,021 56 2,777 Installment 512 1,915 — 2,427 Consumer 3,016 1,053 570 4,639 Leases 88 — 209 297 Total loans $ 89,555 $ 18,485 $ 3,348 $ 111,388 December 31, 2018 (In thousands) Nonaccrual Loans Accruing TDRs Loans Past Due 90 Days or More and Accruing Total Nonperforming Loans Commercial, financial and agricultural $ 14,998 $ 196 $ 10 $ 15,204 Commercial real estate 25,566 2,860 — 28,426 Construction real estate: Commercial 1,866 — — 1,866 Mortgage — 15 20 35 Installment 19 9 — 28 Residential real estate: Commercial 2,610 122 — 2,732 Mortgage 16,892 9,100 1,124 27,116 HELOC 2,158 1,028 9 3,195 Installment 468 1,049 24 1,541 Consumer 3,377 843 1,115 5,335 Leases — — — — Total loans $ 67,954 $ 15,222 $ 2,302 $ 85,478
Loans Individually And Collectively Evaluated For Impairment	The following table provides additional information regarding those nonaccrual loans and accruing TDR loans that were individually evaluated for impairment and those collectively evaluated for impairment, as of September 30, 2019 and December 31, 2018 . September 30, 2019 December 31, 2018 (In thousands) Nonaccrual and Accruing TDRs Loans Individually Evaluated for Impairment Loans Collectively Evaluated for Impairment Nonaccrual and Accruing TDRs Loans Individually Evaluated for Impairment Loans Collectively Evaluated for Impairment Commercial, financial and agricultural $ 31,529 $ 31,485 $ 44 $ 15,194 $ 15,120 $ 74 Commercial real estate 38,799 38,799 — 28,426 28,426 — Construction real estate: Commercial 1,868 1,868 — 1,866 1,866 — Mortgage 34 — 34 15 — 15 Installment 79 — 79 28 — 28 Residential real estate: Commercial 2,238 2,238 — 2,732 2,732 — Mortgage 24,188 — 24,188 25,992 — 25,992 HELOC 2,721 — 2,721 3,186 — 3,186 Installment 2,427 — 2,427 1,517 — 1,517 Consumer 4,069 — 4,069 4,220 — 4,220 Leases 88 88 — — — — Total loans $ 108,040 $ 74,478 $ 33,562 $ 83,176 $ 48,144 $ 35,032
Loans Individually Evaluated For Impairment By Class Of Loans	The following table presents loans individually evaluated for impairment by class of loan, together with the related allowance recorded, as of September 30, 2019 and December 31, 2018 . September 30, 2019 December 31, 2018 (In thousands) Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated Unpaid Principal Balance Recorded Investment Allowance for Loan Losses Allocated With no related allowance recorded: Commercial, financial and agricultural $ 19,140 $ 18,783 $ — $ 8,999 $ 3,713 $ — Commercial real estate 38,723 38,519 — 26,663 26,213 — Construction real estate: Commercial 4,682 1,868 — 4,679 1,866 — Residential real estate: Commercial 2,101 2,035 — 2,691 2,374 — Leases — — — — — — With an allowance recorded: Commercial, financial and agricultural 14,839 12,702 2,917 13,736 11,407 2,169 Commercial real estate 280 280 30 2,255 2,213 86 Construction real estate: Commercial — — — — — — Residential real estate: Commercial 203 203 111 358 358 18 Leases 88 88 25 — — — Total $ 80,056 $ 74,478 $ 3,083 $ 59,381 $ 48,144 $ 2,273
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 and nine months ended September 30, 2019 and September 30, 2018 : Three Months Ended Three Months Ended (In thousands) Recorded Investment as of September 30, 2019 Average Recorded Investment Interest Income Recognized Recorded Investment as of September 30, 2018 Average Recorded Investment Interest Income Recognized Commercial, financial and agricultural $ 31,485 $ 23,468 $ 107 $ 16,026 $ 23,247 $ 187 Commercial real estate 38,799 29,779 277 25,805 26,428 268 Construction real estate: Commercial 1,868 1,922 1 2,016 2,246 4 Residential real estate: Commercial 2,238 1,977 27 2,913 2,758 26 Leases 88 90 — — — — Total $ 74,478 $ 57,236 $ 412 $ 46,760 $ 54,679 $ 485 Nine Months Ended Nine Months Ended (In thousands) Recorded Investment as of September 30, 2019 Average Recorded Investment Interest Income Recognized Recorded Investment as of September 30, 2018 Average Recorded Investment Interest Income Recognized Commercial, financial and agricultural $ 31,485 $ 18,368 $ 244 — $ 16,026 $ 22,686 $ 506 Commercial real estate 38,799 29,712 803 — 25,805 21,582 671 Construction real estate: Commercial 1,868 2,176 23 — 2,016 1,661 31 Residential real estate: Commercial 2,238 2,198 72 — 2,913 6,086 84 Leases 88 36 — — — — Total $ 74,478 $ 52,490 $ 1,142 — $ 46,760 $ 52,015 $ 1,292
Aging Of Recorded Investment In Past Due Loans	The following tables present the aging of the recorded investment in past due loans as of September 30, 2019 and December 31, 2018 by class of loan. September 30, 2019 (In thousands) Accruing Loans Past Due 30-89 Days Past Due Nonaccrual Loans and Loans Past Due 90 Days or More and Accruing (1) Total Past Due Total Current (2) Total Recorded Investment Commercial, financial and agricultural $ 2,570 $ 10,602 $ 13,172 $ 1,132,370 $ 1,145,542 Commercial real estate 673 1,354 2,027 1,603,437 1,605,464 Construction real estate: Commercial — 2,023 2,023 222,357 224,380 Mortgage 118 — 118 93,099 93,217 Installment — 12 12 1,574 1,586 Residential real estate: Commercial 40 791 831 466,024 466,855 Mortgage 10,196 9,508 19,704 1,156,246 1,175,950 HELOC 570 845 1,415 230,777 232,192 Installment 45 269 314 12,747 13,061 Consumer 5,758 1,572 7,330 1,427,016 1,434,346 Leases 51 209 260 30,902 31,162 Total loans $ 20,021 $ 27,185 $ 47,206 $ 6,376,549 $ 6,423,755 (1) Includes an aggregate of $3.3 million of loans past due 90 days or more and accruing. The remaining loans were past due nonaccrual loans. (2) Includes an aggregate of $65.7 million of nonaccrual loans which were current in regards to contractual principal and interest payments. December 31, 2018 (in thousands) Accruing Loans Past Due 30-89 Days Past Due (1) Total Past Due Total Current (2) Total Recorded Investment Commercial, financial and agricultural $ 4,786 $ 1,375 $ 6,161 $ 1,071,228 $ 1,077,389 Commercial real estate 780 3,584 4,364 1,283,431 1,287,795 Construction real estate: Commercial — 1,635 1,635 174,466 176,101 Mortgage 133 20 153 70,539 70,692 Installment 28 19 47 2,393 2,440 Residential real estate: Commercial 683 1,104 1,787 429,093 430,880 Mortgage 13,210 8,553 21,763 1,113,742 1,135,505 HELOC 620 907 1,527 214,915 216,442 Installment 155 274 429 13,934 14,363 Consumer 9,524 2,131 11,655 1,284,237 1,295,892 Leases — — — 2,299 2,299 Total loans $ 29,919 $ 19,602 $ 49,521 $ 5,660,277 $ 5,709,798 (1) Includes an aggregate of $2.3 million of loans past due 90 days or more and accruing. The remaining loans were past due nonaccrual loans. (2) Includes an aggregate of $50.7 million of nonaccrual loans which were current in regards to contractual principal and interest payments.
Recorded Investment By Loan Grade	The tables below present the recorded investment by loan grade at September 30, 2019 and December 31, 2018 for all commercial loans: September 30, 2019 (In thousands) 5 Rated 6 Rated Nonaccrual and Accruing TDRs Purchase Credit Impaired (1) Pass-Rated Recorded Investment Commercial, financial and agricultural * $ 27,059 $ 315 $ 31,529 $ 4,803 $ 1,081,836 $ 1,145,542 Commercial real estate * 11,429 1,246 38,799 10,595 1,543,395 1,605,464 Construction real estate: Commercial 3,852 — 1,868 1,288 217,372 224,380 Residential real estate: Commercial 1,001 33 2,238 1,926 461,657 466,855 Leases — — 88 568 30,506 31,162 Total commercial loans $ 43,341 $ 1,594 $ 74,522 $ 19,180 $ 3,334,766 $ 3,473,403 * Included within each of commercial, financial and agricultural loans and commercial real estate loans is an immaterial amount of consumer loans that are not broken out by class. (1) Excludes loans acquired with deteriorated credit quality which are nonaccrual or TDRs due to additional credit deterioration or modification post acquisition. These loans had a recorded investment of $11,000 at September 30, 2019 . December 31, 2018 (In thousands) 5 Rated 6 Rated Nonaccrual and Accruing TDRs Purchase Credit Impaired (1) Pass-Rated Recorded Investment Commercial, financial and agricultural * $ 11,509 $ 444 $ 15,194 $ 148 $ 1,050,094 $ 1,077,389 Commercial real estate * 2,707 — 28,426 3,059 1,253,603 1,287,795 Construction real estate: Commercial 1,560 — 1,866 503 172,172 176,101 Residential real estate: Commercial 272 41 2,732 251 427,584 430,880 Leases — — — — 2,299 2,299 Total Commercial Loans $ 16,048 $ 485 $ 48,218 $ 3,961 $ 2,905,752 $ 2,974,464
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 September 30, 2019 and September 30, 2018 , as well as the recorded investment of these contracts at September 30, 2019 and September 30, 2018 . The recorded investment pre- and post-modification is generally the same due to the fact that Park does not typically forgive principal. Three Months Ended (In thousands) Number of Contracts Accruing Nonaccrual Total Recorded Investment Commercial, financial and agricultural 8 $ 752 $ 5,002 $ 5,754 Commercial real estate 1 — 241 241 Construction real estate: Commercial 1 82 — 82 Mortgage — — — — Installment — — — — Residential real estate: Commercial 1 13 — 13 Mortgage 4 286 215 501 HELOC 6 31 107 138 Installment 9 407 14 421 Consumer 77 174 542 716 Total loans 107 $ 1,745 $ 6,121 $ 7,866 Three Months Ended (In thousands) Number of Contracts Accruing Nonaccrual Total Recorded Investment Commercial, financial and agricultural 8 $ 22 $ 552 $ 574 Commercial real estate 3 — 1,154 1,154 Construction real estate: Commercial — — — — Mortgage — — — — Installment — — — — Residential real estate: Commercial 2 55 249 304 Mortgage 4 — 246 246 HELOC 10 453 16 469 Installment 8 336 — 336 Consumer 71 31 590 621 Total loans 106 $ 897 $ 2,807 $ 3,704 Of those loans which were modified and determined to be a TDR during the three -month period ended September 30, 2019 , $0.6 million were on nonaccrual status as of December 31, 2018 . Of those loans which were modified and determined to be a TDR during the three -month period ended September 30, 2018 , $0.1 million were on nonaccrual status as of December 31, 2017 . The following tables detail the number of contracts modified as TDRs during the nine -month periods ended September 30, 2019 and September 30, 2018 , as well as the recorded investment of these contracts at September 30, 2019 and September 30, 2018 . The recorded investment pre- and post-modification is generally the same due to the fact that Park does not typically forgive principal. Nine Months Ended (In thousands) Number of Contracts Accruing Nonaccrual Total Recorded Investment Commercial, financial and agricultural 24 $ 3,237 $ 6,059 $ 9,296 Commercial real estate 5 — 3,236 3,236 Construction real estate: Commercial 2 82 — 82 Mortgage 1 — — — Installment — — — — Residential real estate: Commercial 2 13 36 49 Mortgage 18 340 673 1,013 HELOC 14 121 243 364 Installment 25 951 52 1,003 Consumer 251 199 987 1,186 Total loans 342 $ 4,943 $ 11,286 $ 16,229 Nine Months Ended (In thousands) Number of Contracts Accruing Nonaccrual Total Recorded Investment Commercial, financial and agricultural 16 $ 208 $ 592 $ 800 Commercial real estate 10 447 1,412 1,859 Construction real estate: Commercial 1 — — — Mortgage — — — — Installment 2 12 — 12 Residential real estate: Commercial 2 55 249 304 Mortgage 17 90 972 1,062 HELOC 18 735 125 860 Installment 17 437 16 453 Consumer 206 59 1,157 1,216 Total loans 289 $ 2,043 $ 4,523 $ 6,566 Of those loans which were modified and determined to be a TDR during the nine -month period ended September 30, 2019 , $1.8 million were on nonaccrual status as of December 31, 2018 . Of those loans which were modified and determined to be a TDR during the nine -month period ended September 30, 2018 , $0.5 million were on nonaccrual status as of December 31, 2017 .
Recorded Investment In Financing Receivable Modified As TDR Within 12 Months	The following tables present the recorded investment in loans which were modified as TDRs within the previous 12 months and for which there was a payment default during the three -month and nine -month periods ended September 30, 2019 and September 30, 2018 , 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 (In thousands) Number of Contracts Recorded Investment Number of Contracts Recorded Investment Commercial, financial and agricultural 2 $ 2 1 $ 1 Commercial real estate — — — — Construction real estate: Commercial — — — — Mortgage — — — — Installment — — — — Residential real estate: Commercial — — — — Mortgage 4 257 8 688 HELOC 5 135 3 108 Installment 2 66 — — Consumer 51 477 40 315 Leases — — — — Total loans 64 $ 937 52 $ 1,112 Of the $0.9 million in modified TDRs which defaulted during the three -month period ended September 30, 2019 , $48,000 were accruing loans and $0.9 million were nonaccrual loans. Of the $1.1 million in modified TDRs which defaulted during the three -month period ended September 30, 2018 , $67,000 were accruing loans and $1.0 million were nonaccrual loans. Nine Months Ended Nine Months Ended (In thousands) Number of Contracts Recorded Investment Number of Contracts Recorded Investment Commercial, financial and agricultural 3 $ 65 1 $ 1 Commercial real estate — — — — Construction real estate: Commercial — — — — Mortgage — — — — Installment — — — — Residential real estate: Commercial 1 13 — — Mortgage 7 370 9 789 HELOC 7 165 3 108 Installment 2 66 — — Consumer 58 530 50 392 Leases — — — — Total loans 78 $ 1,209 63 $ 1,290 Of the $1.2 million in modified TDRs which defaulted during the nine -month period ended September 30, 2019 , $87,000 were accruing loans and $1.1 million were nonaccrual loans. Of the $1.3 million in modified TDRs which defaulted during the nine -month period ended September 30, 2018 , $67,000 were accruing loans and $1.2 million were nonaccrual loans.

Allowance For Loan Losses (Tabl

Allowance For Loan Losses (Tables)	9 Months Ended
	Sep. 30, 2019
Financing Receivable, Allowance for Credit Loss, Writeoff, after Recovery [Abstract]
Activity In The Allowance For Loan Losses	The activity in the allowance for loan losses for the three -month and nine -month periods ended September 30, 2019 and September 30, 2018 is summarized in the following tables. Three Months Ended (In thousands) Commercial, financial and agricultural Commercial real estate Construction real estate Residential real estate Consumer Leases Total Allowance for loan losses: Beginning balance $ 17,370 $ 10,377 $ 5,065 $ 8,869 $ 12,265 $ 57 $ 54,003 Charge-offs 585 8 — 85 1,801 — 2,479 Recoveries 403 246 432 98 1,183 — 2,362 Net charge-offs/(recoveries) 182 (238 ) (432 ) (13 ) 618 — 117 Provision/(recovery) 1,238 (177 ) (65 ) 49 908 14 1,967 Ending balance $ 18,426 $ 10,438 $ 5,432 $ 8,931 $ 12,555 $ 71 $ 55,853 Three Months Ended (In thousands) Commercial, financial and agricultural Commercial real estate Construction real estate Residential real estate Consumer Leases Total Allowance for loan losses: Beginning balance $ 14,478 $ 9,406 $ 4,652 $ 9,245 $ 11,671 $ — $ 49,452 Charge-offs 993 23 26 61 2,371 — 3,474 Recoveries 136 27 156 130 875 4 1,328 Net charge-offs/(recoveries) 857 (4 ) (130 ) (69 ) 1,496 (4 ) 2,146 Provision/(recovery) 1,394 337 (187 ) (212 ) 1,612 (4 ) 2,940 Ending balance $ 15,015 $ 9,747 $ 4,595 $ 9,102 $ 11,787 $ — $ 50,246 Nine Months Ended (In thousands) Commercial, financial and agricultural Commercial real estate Construction real estate Residential real estate Consumer Leases Total Allowance for loan losses: Beginning balance $ 16,777 $ 9,768 $ 4,463 $ 8,731 $ 11,773 $ — $ 51,512 Charge-offs 1,498 401 — 176 6,319 — 8,394 Recoveries 983 360 543 640 3,824 1 6,351 Net charge-offs/(recoveries) 515 41 (543 ) (464 ) 2,495 (1 ) 2,043 Provision/(recovery) 2,164 711 426 (264 ) 3,277 70 6,384 Ending balance $ 18,426 $ 10,438 $ 5,432 $ 8,931 $ 12,555 $ 71 $ 55,853 Nine Months Ended (In thousands) Commercial, financial and agricultural Commercial real estate Construction real estate Residential real estate Consumer Leases Total Allowance for loan losses: Beginning balance $ 15,022 $ 9,601 $ 4,430 $ 9,321 $ 11,614 $ — $ 49,988 Charge-offs 1,929 252 57 279 7,123 — 9,640 Recoveries 994 203 435 734 2,942 4 5,312 Net charge-offs/(recoveries) 935 49 (378 ) (455 ) 4,181 (4 ) 4,328 Provision/(recovery) 928 195 (213 ) (674 ) 4,354 (4 ) 4,586 Ending balance $ 15,015 $ 9,747 $ 4,595 $ 9,102 $ 11,787 $ — $ 50,246
Composition Of The Allowance For Loan Losses	The composition of the allowance for loan losses at September 30, 2019 and December 31, 2018 was as follows: September 30, 2019 (In thousands) Commercial, financial and agricultural Commercial real estate Construction real estate Residential real estate Consumer Leases Total Allowance for loan losses: Ending allowance balance attributed to loans: Individually evaluated for impairment $ 2,917 $ 30 $ — $ 111 $ — $ 25 $ 3,083 Collectively evaluated for impairment 15,509 10,408 5,432 8,820 12,555 46 52,770 Acquired with deteriorated credit quality (1) — — — — — — — Total ending allowance balance $ 18,426 $ 10,438 $ 5,432 $ 8,931 $ 12,555 $ 71 $ 55,853 Loan balance: Loans individually evaluated for impairment $ 31,472 $ 38,758 $ 1,869 $ 2,237 $ — $ 88 $ 74,424 Loans collectively evaluated for impairment 1,103,885 1,550,422 314,942 1,878,615 1,430,397 30,476 6,308,737 Loans acquired with deteriorated credit quality (1) 4,781 10,517 1,358 3,259 3 568 20,486 Total ending loan balance $ 1,140,138 $ 1,599,697 $ 318,169 $ 1,884,111 $ 1,430,400 $ 31,132 $ 6,403,647 Allowance for loan losses as a percentage of loan balance: Loans individually evaluated for impairment 9.27 % 0.08 % — % 4.96 % — % 28.41 % 4.14 % Loans collectively evaluated for impairment 1.40 % 0.67 % 1.72 % 0.47 % 0.88 % 0.15 % 0.84 % Loans acquired with deteriorated credit quality — % — % — % — % — % — % — % Total 1.62 % 0.65 % 1.71 % 0.47 % 0.88 % 0.23 % 0.87 % Recorded investment: Loans individually evaluated for impairment $ 31,485 $ 38,799 $ 1,868 $ 2,238 $ — $ 88 $ 74,478 Loans collectively evaluated for impairment 1,109,254 1,556,070 315,927 1,882,543 1,434,343 30,506 6,328,643 Loans acquired with deteriorated credit quality (1) 4,803 10,595 1,388 3,277 3 568 20,634 Total ending recorded investment $ 1,145,542 $ 1,605,464 $ 319,183 $ 1,888,058 $ 1,434,346 $ 31,162 $ 6,423,755 (1) Excludes loans acquired with deteriorated credit quality which are individually evaluated for impairment due to additional credit deterioration or modification post-acquisition. These loans had a balance of $11,000 , a recorded investment of $11,000 , and no allowance as of September 30, 2019 . December 31, 2018 (In thousands) Commercial, financial and agricultural Commercial real estate Construction real estate Residential real estate Consumer Leases Total Allowance for loan losses: Ending allowance balance attributed to loans: Individually evaluated for impairment $ 2,169 $ 86 $ — $ 18 $ — $ — $ 2,273 Collectively evaluated for impairment 14,608 9,682 4,463 8,713 11,773 — 49,239 Acquired with deteriorated credit quality — — — — — — — Total ending allowance balance $ 16,777 $ 9,768 $ 4,463 $ 8,731 $ 11,773 $ — $ 51,512 Loan balance: Loans individually evaluated for impairment $ 15,119 $ 28,418 $ 1,866 $ 2,732 $ — $ — $ 48,135 Loans collectively evaluated for impairment 1,057,520 1,251,579 245,909 1,790,637 1,292,136 2,273 5,640,054 Loans acquired with deteriorated credit quality (1) 147 3,048 499 249 — — 3,943 Total ending loan balance $ 1,072,786 $ 1,283,045 $ 248,274 $ 1,793,618 $ 1,292,136 $ 2,273 $ 5,692,132 Allowance for loan losses as a percentage of loan balance: Loans individually evaluated for impairment 14.35 % 0.30 % — % 0.66 % — % — % 4.72 % Loans collectively evaluated for impairment 1.38 % 0.77 % 1.81 % 0.49 % 0.91 % — % 0.87 % Loans acquired with deteriorated credit quality — % — % — % — % — % — % — % Total 1.56 % 0.76 % 1.80 % 0.49 % 0.91 % — % 0.90 % Recorded investment: Loans individually evaluated for impairment $ 15,120 $ 28,426 $ 1,866 $ 2,732 $ — $ — $ 48,144 Loans collectively evaluated for impairment 1,062,121 1,256,310 246,864 1,794,207 1,295,892 2,299 5,657,693 Loans acquired with deteriorated credit quality (1) 148 3,059 503 251 — — 3,961 Total ending recorded investment $ 1,077,389 $ 1,287,795 $ 249,233 $ 1,797,190 $ 1,295,892 $ 2,299 $ 5,709,798 (1) Excludes loans acquired with deteriorated credit quality which are individually evaluated for impairment due to additional credit deterioration or modification post acquisition. These loans had a balance of $475,000 , a recorded investment of $475,000 , and no allowance as of December 31, 2018.

Goodwill and other intangibles

Goodwill and other intangibles (Tables)	9 Months Ended
	Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets and Goodwill [Table Text Block]	The following table shows the activity in goodwill and other intangible assets for the nine months ended September 30, 2019 and 2018. (in thousands) Goodwill Other intangible assets Total December 31, 2017 $ 72,334 $ — $ 72,334 Acquired goodwill and other intangible assets 40,405 7,549 47,954 Amortization — 289 289 September 30, 2018 $ 112,739 $ 7,260 $ 119,999 December 31, 2018 $ 112,739 $ 6,971 $ 119,710 Acquired goodwill and other intangible assets 45,260 10,251 55,511 Amortization — 1,732 1,732 September 30, 2019 $ 157,999 $ 15,490 $ 173,489
Intangible Assets Disclosure [Text Block]	The following table shows the balance of acquired intangible assets as of September 30, 2019 and December 31, 2018. September 30, 2019 December 31, 2018 (in thousands) Gross Carrying Amount Accumulated Amortization Gross Carrying Amount Accumulated Amortization Other intangible assets: Core deposit intangible assets $ 16,500 $ 2,310 $ 6,249 $ 578 Trade name intangible assets 1,300 — 1,300 — Total $ 17,800 $ 2,310 $ 7,549 $ 578
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	Estimated amortization expense related to core deposit intangible assets for each of the periods listed below follows: (in thousands) Total Three months ending December 31, 2019 $ 741 2020 2,502 2021 2,040 2022 1,725 2023 1,548

Investment in Qualified Affor_2

Investment in Qualified Affordable Housing (Tables)	9 Months Ended
	Sep. 30, 2019
Equity Method Investments and Joint Ventures [Abstract]
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 September 30, 2019 and December 31, 2018. (in thousands) September 30, 2019 December 31, 2018 Affordable housing tax credit investments $ 54,909 $ 50,347 Unfunded commitments 28,439 22,282

Other Real Estate Owned (Tables

Other Real Estate Owned (Tables)	9 Months Ended
	Sep. 30, 2019
Other Real Estate Owned [Abstract]
Schedule of Assets Repossessed or Foreclosed, or loans in process of foreclosure [Table Text Block] [Text Block]	Park typically transfers a loan to other real estate owned at the time that Park takes deed/title to the real estate property asset. The carrying amounts of foreclosed real estate properties held at September 30, 2019 and December 31, 2018 are listed below, as well as the recorded investment of loans secured by residential real estate properties for which formal foreclosure proceedings were in process at those dates. (in thousands) September 30, 2019 December 31, 2018 OREO: Commercial real estate $ 2,385 $ 2,359 Construction real estate 380 1,108 Residential real estate 1,014 836 Total OREO $ 3,779 $ 4,303 Loans in process of foreclosure: Residential real estate $ 2,499 $ 2,346

Loan Servicing (Tables)

Loan Servicing (Tables)	9 Months Ended
	Sep. 30, 2019
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 Nine Months Ended (In thousands) 2019 2018 2019 2018 Mortgage servicing rights: Carrying amount, net, beginning of period $ 10,104 $ 10,077 $ 10,178 $ 9,688 Additions 722 432 1,462 1,208 Amortization (534 ) (387 ) (1,259 ) (1,156 ) Changes in valuation allowance (332 ) (26 ) (421 ) 356 Carrying amount, net, end of period $ 9,960 $ 10,096 $ 9,960 $ 10,096 Valuation allowance: Beginning of period $ 321 $ 248 $ 232 $ 630 Changes in valuation allowance 332 26 421 (356 ) End of period $ 653 $ 274 $ 653 $ 274

Leases Leases (Tables)

Leases Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Leases [Abstract]
Lease, Cost [Table Text Block]	Other information related to operating leases for the three and nine months ended September 30, 2019 was as follows: (Dollars in thousands) Three Months Ended Nine Months Ended Lease cost Operating lease cost $ 831 $ 2,320 Sublease income (97 ) (285 ) Total lease cost $ 734 $ 2,035 Other information Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 843 $ 2,336 ROU assets obtained in exchange for new operating lease liabilities $ 342 $ 381 Reductions to ROU assets resulting from reductions to lease obligations $ (726 ) $ (2,021 )
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	Undiscounted cash flows included in lease liabilities have expected contractual payments as follows: (in thousands) September 30, 2019 Three months ending December 31, 2019 $ 852 2020 2,868 2021 2,565 2022 2,406 2023 2,294 Thereafter 6,044 Total undiscounted minimum lease payments $ 17,029 Present value adjustment (1,838 ) Total lease liabilities $ 15,191
Lessee, Operating Leases	Leases Park is a lessee in several noncancellable operating lease arrangements, primarily for retail branches, administrative and warehouse buildings, ATMs, and certain office equipment within its Ohio, North Carolina, South Carolina, and Kentucky markets. Certain of these leases contain renewal options for periods ranging from one to five years. Park’s leases generally do not include termination options for either party to the lease or restrictive financial or other covenants. Payments due under the lease contracts include fixed payments plus, for many of Park’s real estate leases, variable payments such as Park's proportionate share of property taxes, insurance, and common area maintenance. The Company adopted ASU 2016-02, Leases (ASC 842), using the modified retrospective method as of the date of adoption, January 1, 2019, as permitted by the amendments in ASU 2018-11. As a result, the Company was not required to adjust its comparative period financial information for effects of the adoption of the standard or make the new required lease disclosures for periods prior to the effective date. Upon adoption of this accounting guidance on January 1, 2019, Park recorded an initial ROU asset of $11.0 million , and a lease liability of $11.8 million , and reclassified an existing deferred rent liability of $0.6 million . The impact to the Company's retained earnings, net of the tax impact, was $143,000 . Management elected to adopt the package of transition practical expedients and, therefore, has not reassessed (1) whether existing or expired contracts contain a lease, (2) lease classification for existing or expired leases or (3) the accounting for initial direct costs that were previously capitalized. The Company did not elect the practical expedient to use hindsight for leases existing at the adoption date. Park elected the practical expedient, by class of underlying asset, to not separate non-lease components from the associated lease components. Additionally, Park has elected not to recognize ROU assets and lease liabilities for short-term leases that have a lease term of 12 months or less. The Company recognizes the lease payments associated with its short-term leases as an expense on a cash basis. Management determines if an arrangement is or contains a lease at contract inception. If an arrangement is determined to be or contain a lease, Park recognizes a ROU asset and a lease liability at the lease commencement date. Park’s lease liability is initially and subsequently measured at the present value of the unpaid lease payments at the lease commencement date. Key estimates and judgments related to the lease liability include how management determines (1) the discount rate it uses to discount the unpaid lease payments to present value, (2) the lease term, and (3) lease payments. • ASC 842 requires a lessee to discount its unpaid lease payments using the interest rate implicit in the lease or, if that rate cannot be readily determined, its incremental borrowing rate. Generally, management cannot determine the interest rate implicit in the lease because it does not have access to the lessor’s estimated residual value or the amount of the lessor’s deferred initial direct costs. Therefore, Park utilizes its incremental borrowing rate as the discount rate for leases. Park’s incremental borrowing rate for a lease is the rate of interest it would have to pay on a collateralized basis to borrow an amount equal to the lease payments under similar terms. To manage its capital and liquidity needs, Park periodically obtains wholesale funding from the FHLB on an over-collateralized basis. The impact of utilizing an interest rate on an over-collateralized borrowing versus a fully collateralized borrowing is not material. Therefore, the FHLB yield curve was selected by management as a baseline to determine Park’s discount rates for leases. • The lease term for all of the Company’s leases includes the noncancellable period of the lease plus any additional periods covered by either Park's option to extend (or not to terminate) the lease that the Company is reasonably certain to exercise, or an option to extend (or not to terminate) the lease controlled by the lessor. If a lease contract contains multiple renewal options, management generally models lease cash flows through the first renewal option period unless the contract contains economic incentives or other conditions that increase the likelihood that additional renewals are reasonably certain to be exercised. • Lease payments included in the measurement of the lease liability are comprised of the following: – Fixed payments, including in-substance fixed payments, owed over the lease term; – For certain of Park's gross real estate leases, non-lease components such as real estate taxes, insurance, and common area maintenance; and – Variable lease payments that depend on an index or rate, initially measured using the index or rate at the lease commencement date. The ROU asset is initially measured at cost, which comprises the initial amount of the lease liability adjusted for lease payments made at or before the lease commencement date, plus any initial direct costs incurred less any lease incentives received. For operating leases, the ROU asset is subsequently measured throughout the lease term at the carrying amount of the lease liability, plus initial direct costs, plus (minus) any prepaid (accrued) lease payments, less the unamortized balance of lease incentives received. Lease expense for lease payments is recognized on a straight-line basis over the lease term. Park's operating lease ROU asset and lease liability are presented in “Operating lease right-of-use asset" and "Operating lease liability," respectively, on Park's consolidated condensed balance sheet. The carrying amount of Park's ROU asset and lease liability at September 30, 2019 were $14.4 million and $15.2 million , respectively. Park's operating lease expense is recorded in "Occupancy expense" on the Company's consolidated condensed statements of income. Other information related to operating leases for the three and nine months ended September 30, 2019 was as follows: (Dollars in thousands) Three Months Ended Nine Months Ended Lease cost Operating lease cost $ 831 $ 2,320 Sublease income (97 ) (285 ) Total lease cost $ 734 $ 2,035 Other information Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 843 $ 2,336 ROU assets obtained in exchange for new operating lease liabilities $ 342 $ 381 Reductions to ROU assets resulting from reductions to lease obligations $ (726 ) $ (2,021 ) At September 30, 2019 , Park's operating leases had a weighted average remaining term of 7.4 years and a weighted average discount rate of 3.1% . Undiscounted cash flows included in lease liabilities have expected contractual payments as follows: (in thousands) September 30, 2019 Three months ending December 31, 2019 $ 852 2020 2,868 2021 2,565 2022 2,406 2023 2,294 Thereafter 6,044 Total undiscounted minimum lease payments $ 17,029 Present value adjustment (1,838 ) Total lease liabilities $ 15,191

Repurchase Agreement Borrowin_2

Repurchase Agreement Borrowings (Tables)	9 Months Ended
	Sep. 30, 2019
Transfers and Servicing [Abstract]
Schedule of Assets and Associated Liabilities Accounted for as Secured Borrowings [Table Text Block]	The table below shows the remaining contractual maturity of repurchase agreements by collateral pledged at September 30, 2019 and December 31, 2018 : September 30, 2019 (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 $ 160,838 $ — $ — $ — $ 160,838 December 31, 2018 (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 $ 164,966 $ — $ — $ — $ 164,966

Derivatives (Tables)

Derivatives (Tables)	9 Months Ended
	Sep. 30, 2019
Derivative [Line Items]
Schedule of Derivative Instruments [Table Text Block]	Summary information about Park's interest rate swaps as of September 30, 2019 follows: September 30, 2019 (In thousands, except weighted average data) Borrowing Derivatives Loan Derivatives Notional amounts $ 25,000 $ 35,961 Weighted average pay rates 2.595 % 4.692 % Weighted average receive rates 2.303 % 4.692 % Weighted average maturity (years) 2.7 10.4 Unrealized losses $ 704 $ —
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) [Table Text Block]	The following table presents the net gains (losses), net of income taxes, recorded in AOCI and the consolidated condensed statements of income related to interest rate swaps for the three -month and nine -month periods ended September 30, 2019 . Three Months Ended (In thousands) Amount of Gain (Loss) Recognized in OCI (Effective Portion) Amount of Gain (Loss) Reclassified from OCI to Interest Income Amount of Gain (Loss) Recognized in Other Non-interest Income (Ineffective Portion) Interest rate contracts $ (49 ) $ — $ — Nine Months Ended (In thousands) Amount of Gain (Loss) Recognized in OCI (Effective Portion) Amount of Gain (Loss) Reclassified from OCI to Interest Income Amount of Gain (Loss) Recognized in Other Non-interest Income (Ineffective Portion) Interest rate contracts $ (556 ) $ — $ —
Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]	The following table reflects the interest rate swaps included in the consolidated condensed balance sheets as of September 30, 2019 . (In thousands) September 30, 2019 Notional Amount Fair Value Included in other assets: Borrowing derivatives - interest rate swaps related to FHLB advances $ — $ — Loan derivatives - instruments associated with loans Matched interest rate swaps with borrower 35,163 2,503 Matched interest rate swaps with counterparty 798 3 Total included in other assets $ 35,961 $ 2,506 Included in other liabilities: Borrowing derivatives - interest rate swaps related to FHLB advances $ 25,000 $ (704 ) Loan derivatives - instruments associated with loans Matched interest rate swaps with borrower 798 (3 ) Matched interest rate swaps with counterparty 35,163 (2,503 ) Total included in other liabilities $ 60,961 $ (3,210 )

Other Comprehensive Income (L_2

Other Comprehensive Income (Loss) Net of Tax (Tables)	9 Months Ended
	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Comprehensive Income (Loss) [Table Text Block]	Other comprehensive income (loss) components, net of income tax, are shown in the following table for the three-month and nine-month periods ended September 30, 2019 and 2018 : (in thousands) Changes in pension plan assets and benefit obligations Unrealized net holding loss on cash flow hedge Unrealized gains (losses) on AFS debt securities Total Beginning balance at July 1, 2019 $ (29,672 ) $ (507 ) $ 3,872 $ (26,307 ) Other comprehensive (loss) income before reclassifications (1) — (49 ) 13,889 13,840 Amounts reclassified from accumulated other comprehensive loss — — (147 ) (147 ) Net current period other comprehensive (loss) income — (49 ) 13,742 13,693 Ending balance at September 30, 2019 $ (29,672 ) $ (556 ) $ 17,614 $ (12,614 ) Beginning balance at July 1, 2018 $ (26,701 ) $ — $ (28,308 ) $ (55,009 ) Other comprehensive loss before reclassifications — — (5,141 ) (5,141 ) Net current period other comprehensive loss — — (5,141 ) (5,141 ) Ending balance at September 30, 2018 $ (26,701 ) $ — $ (33,449 ) $ (60,150 ) (in thousands) Changes in pension plan assets and benefit obligations Unrealized net holding loss on cash flow hedge Unrealized gains (losses) on AFS debt securities Total Beginning balance at January 1, 2019 $ (29,672 ) $ — $ (20,116 ) $ (49,788 ) Other comprehensive (loss) income before reclassifications (1) — (556 ) 37,397 36,841 Amounts reclassified from accumulated other comprehensive loss — — 333 333 Net current period other comprehensive (loss) income — (556 ) 37,730 37,174 Ending balance at September 30, 2019 $ (29,672 ) $ (556 ) $ 17,614 $ (12,614 ) Beginning balance at January 1, 2018, as previously presented $ (23,526 ) $ — $ (2,928 ) $ (26,454 ) Cumulative effect of change in accounting principle for marketable equity securities, net of tax — — (995 ) (995 ) Beginning balance at January 1, 2018, as adjusted (23,526 ) — (3,923 ) (27,449 ) Reclassification of disproportionate income tax effects (3,175 ) — (631 ) (3,806 ) Net current period activity Other comprehensive loss before reclassifications — — (30,919 ) (30,919 ) Amounts reclassified from accumulated other comprehensive loss — — 2,024 2,024 Net current period other comprehensive loss — — (28,895 ) (28,895 ) Ending balance at September 30, 2018 $ (26,701 ) $ — $ (33,449 ) $ (60,150 ) (1) During the three-month and nine-month periods ended September 30, 2019, Park transferred HTM securities with a fair value of $373.9 million to AFS classification. The transfer occurred at fair value and had a related unrealized gain of $24.2 million ( $19.1 million net of taxes), recorded in other comprehensive income.

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	9 Months Ended
	Sep. 30, 2019
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 and nine months ended September 30, 2019 and 2018 . Three Months Ended Nine Months Ended (In thousands, except share and per common share data) 2019 2018 2019 2018 Numerator: Net income $ 31,146 $ 24,762 $ 78,764 $ 84,126 Denominator: Weighted-average common shares outstanding 16,382,798 15,686,542 16,198,294 15,420,135 Effect of dilutive PBRSUs and TBRSUs 92,943 146,192 89,401 140,531 Weighted-average common shares outstanding adjusted for the effect of dilutive PBRSUs and TBRSUs 16,475,741 15,832,734 16,287,695 15,560,666 Earnings per common share: Basic earnings per common share $ 1.90 $ 1.58 $ 4.86 $ 5.46 Diluted earnings per common share $ 1.89 $ 1.56 $ 4.84 $ 5.41

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2019
Segment Reporting [Abstract]
Schedule Of Operating Results By Segment	Operating Results for the three months ended September 30, 2019 (In thousands) PNB GFSC All Other Total Net interest income (expense) $ 76,180 $ 1,244 $ (323 ) $ 77,101 Provision for (recovery of) loan losses 2,320 143 (496 ) 1,967 Other income 24,842 59 3,235 28,136 Other expense 60,943 902 3,893 65,738 Income (loss) before income taxes $ 37,759 $ 258 $ (485 ) $ 37,532 Income tax expense (benefit) 6,811 55 (480 ) 6,386 Net income (loss) $ 30,948 $ 203 $ (5 ) $ 31,146 Assets (as of September 30, 2019) $ 8,673,919 $ 27,481 $ 22,210 $ 8,723,610 Operating Results for the three months ended September 30, 2018 (In thousands) PNB GFSC All Other Total Net interest income $ 66,195 $ 1,252 $ 229 $ 67,676 Provision for (recovery of) loan losses 2,935 183 (178 ) 2,940 Other income 22,559 63 1,442 24,064 Other expense 51,982 810 6,524 59,316 Income (loss) before income taxes $ 33,837 $ 322 $ (4,675 ) $ 29,484 Income tax expense (benefit) 5,981 68 (1,327 ) 4,722 Net income (loss) $ 27,856 $ 254 $ (3,348 ) $ 24,762 Assets (as of September 30, 2018) $ 7,707,474 $ 28,551 $ 20,466 $ 7,756,491 Operating Results for the nine months ended September 30, 2019 (In thousands) PNB GFSC All Other Total Net interest income (expense) $ 217,355 $ 3,786 $ (413 ) $ 220,728 Provision for (recovery of) loan losses 6,563 458 (637 ) 6,384 Other income 68,224 142 4,603 72,969 Other expense 172,931 2,638 17,188 192,757 Income (loss) before income taxes $ 106,085 $ 832 $ (12,361 ) $ 94,556 Income tax expense (benefit) 19,063 179 (3,450 ) 15,792 Net income (loss) $ 87,022 $ 653 $ (8,911 ) $ 78,764 Operating Results for the nine months ended September 30, 2018 (In thousands) PNB GFSC All Other Total Net interest income $ 190,319 $ 3,818 $ 3,131 $ 197,268 Provision for (recovery of) loan losses 4,491 773 (678 ) 4,586 Other income 64,544 135 9,530 74,209 Other expense 149,152 2,412 14,594 166,158 Income (loss) before income taxes $ 101,220 $ 768 $ (1,255 ) $ 100,733 Income tax expense (benefit) 17,822 162 (1,377 ) 16,607 Net income $ 83,398 $ 606 $ 122 $ 84,126

Share Based Compensation (Table

Share Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2019
Share-based Payment Arrangement [Abstract]
Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]	A summary of changes in the common shares subject to nonvested PBRSUs and TBRSUs for the nine months ended September 30, 2019 follows: Common shares subject to PBRSUs and TBRSUs Nonvested at January 1, 2019 152,631 Granted 74,440 Vested (27,719 ) Forfeited (1,262 ) Adjustment for performance conditions of PBRSUs (1) (3,368 ) Nonvested at September 30, 2019 (2) 194,722
Share-based Payment Arrangement, Nonvested Award, Cost [Table Text Block]	The following table details expected additional share-based compensation expense related to PBRSUs and TBRSUs outstanding as of September 30, 2019: (In thousands) Three months ending December 31, 2019 $ 1,287 2020 4,047 2021 2,388 2022 1,038 2023 163 Total $ 8,923

Benefit Plan (Tables)

Benefit Plan (Tables)	9 Months Ended
	Sep. 30, 2019
Defined Benefit Plan [Abstract]
Components Of Net Periodic Benefit Expense	The following table shows the components of net periodic pension benefit expense (income): Three Months Ended Nine Months Ended Affected Line Item in the Consolidated Condensed Statements of Income (In thousands) 2019 2018 2019 2018 Service cost $ 1,468 $ 1,637 $ 4,404 $ 4,911 Employee benefits Interest cost 1,373 1,309 4,119 3,927 Other components of net periodic pension benefit income Expected return on plan assets (3,026 ) (3,354 ) (9,078 ) (10,062 ) Other components of net Recognized net actuarial loss 470 340 1,410 1,020 Other components of net Net periodic pension benefit expense (income) $ 285 $ (68 ) $ 855 $ (204 ) Park has entered into Supplemental Executive Retirement Plan Agreements (the “SERP Agreements”) with certain key officers of the Corporation and its subsidiaries which provide defined pension benefits in excess of limits imposed by federal tax law. The expense for the Corporation related to the SERP Agreements for the three months and nine months ended September 30, 2019 and 2018 was as follows: Three Months Ended Nine Months Ended Affected Line Item in the Consolidated (In thousands) 2019 2018 2019 2018 Service cost $ 202 $ 157 $ 604 $ 635 Employee benefits Interest cost 165 188 495 349 Miscellaneous expense Total SERP expense $ 367 $ 345 $ 1,099 $ 984

Fair Value (Tables)

Fair Value (Tables)	9 Months Ended
	Sep. 30, 2019
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 September 30, 2019 using: (In thousands) Level 1 Level 2 Level 3 Balance at September 30, 2019 Assets Investment securities: Obligations of states and political subdivisions — 321,905 321,905 U.S. Government sponsored entities’ asset-backed securities — 938,381 — 938,381 Equity securities 1,451 — 438 1,889 Mortgage loans held for sale — 21,986 — 21,986 Mortgage IRLCs — 422 — 422 Loan interest rate swaps — 2,506 — 2,506 Liabilities Fair value swap $ — $ — $ 226 $ 226 Borrowing interest rate swap — 704 — 704 Loan interest rate swaps — 2,506 — 2,506 Fair Value Measurements at December 31, 2018 using: (In thousands) Level 1 Level 2 Level 3 Balance at December 31, 2018 Assets Investment securities: U.S. Government sponsored entities’ asset-backed securities $ — $ 1,003,421 $ — $ 1,003,421 Equity securities 1,225 — 424 1,649 Mortgage loans held for sale — 4,158 — 4,158 Mortgage IRLCs — 87 — 87 Liabilities Fair value swap $ — $ — $ 226 $ 226
Reconciliation Of Level 3 Input For Financial Instruments Measured On Recurring Basis	The tables below present a reconciliation of the beginning and ending balances of the Level 3 inputs for the three and nine months ended September 30, 2019 and 2018 , for financial instruments measured on a recurring basis and classified as Level 3: Level 3 Fair Value Measurements Three months ended September 30, 2019 and 2018 (In thousands) Equity Securities Fair value swap Balance at July 1, 2019 $ 433 $ (226 ) Total gains/(losses) Included in other income 5 — Balance at September 30, 2019 $ 438 $ (226 ) Balance at July 1, 2018 $ 420 $ (226 ) Total gains/(losses) Included in other income 4 — Balance at September 30, 2018 $ 424 $ (226 ) Level 3 Fair Value Measurements Nine months ended September 30, 2019 and 2018 (In thousands) Equity Securities Fair value swap Balance at January 1, 2019 $ 424 $ (226 ) Total gains/(losses) Included in other income 14 — Balance at September 30, 2019 $ 438 $ (226 ) Balance at January 1, 2018 $ 417 $ (226 ) Total gains/(losses) Included in other income 7 — Balance at September 30, 2018 $ 424 $ (226 )
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. As of September 30, 2019 , there were no PCI loans carried at fair value. 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 with respect to the property's value subsequent to the initial measurement. Fair Value Measurements at September 30, 2019 using: (In thousands) Level 1 Level 2 Level 3 Balance at September 30, 2019 Impaired loans recorded at fair value: Commercial real estate $ — $ — $ 1,862 $ 1,862 Construction real estate — — 1,635 1,635 Residential real estate — — 182 182 Total impaired loans recorded at fair value $ — $ — $ 3,679 $ 3,679 MSRs $ — $ 7,462 $ — $ 7,462 OREO: Commercial real estate — — 2,385 2,385 Residential real estate — — 779 779 Total OREO recorded at fair value $ — $ — $ 3,164 $ 3,164 Other repossessed assets $ — $ — $ 3,598 $ 3,598 Fair Value Measurements at December 31, 2018 using: (In thousands) Level 1 Level 2 Level 3 Balance at December 31, 2018 Impaired loans recorded at fair value: Commercial real estate $ — $ — $ 4,059 $ 4,059 Construction real estate — — 1,635 1,635 Residential real estate — — 705 705 Total impaired loans recorded at fair value $ — $ — $ 6,399 $ 6,399 MSRs $ — $ 1,169 $ — $ 1,169 OREO: Commercial real estate — — 2,295 2,295 Construction real estate — — 729 729 Residential real estate — — 650 650 Total OREO recorded at fair value $ — $ — $ 3,674 $ 3,674 Other repossessed assets $ — $ — $ 3,464 $ 3,464
Schedule of impaired financing receivables additional info	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. September 30, 2019 (In thousands) Recorded Investment Prior Charge-Offs Specific Valuation Allowance Carrying Balance Impaired loans recorded at fair value $ 3,820 $ 3,126 $ 141 $ 3,679 Remaining impaired loans 70,658 2,507 2,942 67,716 Total impaired loans $ 74,478 $ 5,633 $ 3,083 $ 71,395 December 31, 2018 (In thousands) Recorded Investment Prior Charge-Offs Specific Valuation Allowance Carrying Balance Impaired loans recorded at fair value $ 6,503 $ 3,630 $ 104 $ 6,399 Remaining impaired loans 41,641 7,616 2,169 39,472 Total impaired loans $ 48,144 $ 11,246 $ 2,273 $ 45,871
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 nonrecurring basis at September 30, 2019 and December 31, 2018 : September 30, 2019 (In thousands) Fair Value Valuation Technique Unobservable Input(s) Range (Weighted Average) Impaired loans: Commercial real estate $ 1,861 Sales comparison approach Adj to comparables 0.0% - 89.6% (28.1%) Income approach Capitalization rate 10.6% (10.6%) Cost approach Accumulated depreciation 60.0% - 93.1% (72.4%) Construction real estate $ 1,635 Sales comparison approach Adj to comparables 0.1% - 72.4% (38.5%) Residential real estate $ 182 Sales comparison approach Adj to comparables 0.0% - 53.5% (13.8%) Other real estate owned: Commercial real estate $ 2,385 Sales comparison approach Adj to comparables 0.9% - 68.4% (31.1%) Income approach Capitalization rate 10.0% - 13.0% (12.8%) Residential real estate $ 779 Sales comparison approach Adj to comparables 1.9% - 54.6% (34.6%) Balance at December 31, 2018 (In thousands) Fair Value Valuation Technique Unobservable Input(s) Range (Weighted Average) Impaired loans: Commercial real estate $ 4,059 Sales comparison approach Adj to comparables 0.0% - 107.5% (31.1%) Income approach Capitalization rate 9.5% - 10.8% (10.6%) Cost approach Accumulated depreciation 4.2% - 90.1% (11.0%) Construction real estate $ 1,635 Sales comparison approach Adj to comparables 5.0% - 90.0% (26.1%) Residential real estate $ 705 Sales comparison approach Adj to comparables 0.0% - 40.0% (13.2%) Income approach Capitalization rate 10.5% (10.5%) Other real estate owned: Commercial real estate $ 2,295 Sales comparison approach Adj to comparables 0.9% - 68.4% (34.7%) Income approach Capitalization rate 13.0% (13.0%) Construction real estate $ 729 Sales comparison approach Adj to comparables 0.0% - 45.0% (21.7%) Residential real estate $ 650 Sales comparison approach Adj to comparables 30.4% - 54.6% (42.5%)
Fair Value, by Balance Sheet Grouping	The fair value of certain financial instruments at September 30, 2019 and December 31, 2018 , was as follows: September 30, 2019 Fair Value Measurements (In thousands) Carrying value Level 1 Level 2 Level 3 Total fair value Financial assets: Cash and money market instruments $ 372,726 $ 372,726 $ — $ — $ 372,726 Investment securities (1) 1,260,286 — 1,260,286 — 1,260,286 Other investment securities (2) 1,889 1,451 — 438 1,889 Loans held for sale 21,986 — 21,986 — 21,986 Mortgage IRLCs 422 — 422 — 422 Impaired loans carried at fair value 3,678 — — 3,679 3,679 Other loans, net 6,321,708 — — 6,325,294 6,325,294 Loans receivable, net $ 6,347,794 $ — $ 22,408 $ 6,328,973 $ 6,351,381 Financial liabilities: Time deposits 1,127,366 — 1,133,648 — 1,133,648 Other 5,271 5,271 — — 5,271 Deposits (excluding demand deposits) $ 1,132,637 $ 5,271 $ 1,133,648 $ — $ 1,138,919 Short-term borrowings $ 185,838 $ — $ 185,838 $ — $ 185,838 Long-term debt 297,500 — 307,047 — 307,047 Subordinated notes 15,000 — 13,810 — 13,810 Derivative financial instruments - assets: Loan interest rate swaps $ 2,506 $ — $ 2,506 $ — $ 2,506 Derivative financial instruments - liabilities: Fair value swap $ 226 $ — $ — $ 226 $ 226 Borrowing interest rate swap 704 — 704 — 704 Loan interest rate swaps 2,506 — 2,506 — 2,506 (1) Includes AFS debt securities. (2) Excludes FHLB stock and FRB stock which are carried at their respective redemption values, investment securities accounted for at modified cost as these investments do not have a readily determinable fair value, and Partnership Investments valued using the NAV practical expedient. December 31, 2018 Fair Value Measurements (In thousands) Carrying value Level 1 Level 2 Level 3 Total fair value Financial assets: Cash and money market instruments $ 167,214 $ 167,214 $ — $ — $ 167,214 Investment securities (1) 1,355,229 — 1,354,843 — 1,354,843 Other investment securities (2) 1,649 1,225 — 424 1,649 Loans held for sale 4,158 — 4,158 — 4,158 Mortgage IRLCs 87 — 87 — 87 Impaired loans carried at fair value 6,399 — — 6,399 6,399 Other loans, net 5,629,976 — — 5,570,136 5,570,136 Loans receivable, net $ 5,640,620 $ — $ 4,245 $ 5,576,535 $ 5,580,780 Financial liabilities: Time deposits $ 1,043,177 $ — $ 1,044,620 — $ 1,044,620 Other 1,267 1,267 — — 1,267 Deposits (excluding demand deposits) $ 1,044,444 $ 1,267 $ 1,044,620 $ — $ 1,045,887 Short-term borrowings $ 221,966 $ — $ 221,966 $ — $ 221,966 Long-term debt 400,000 — 400,203 — 400,203 Subordinated notes 15,000 — 12,959 — 12,959 Derivative financial instruments: Fair value swap $ 226 $ — $ — $ 226 $ 226 (1) Includes AFS debt securities and HTM debt securities. (2) Excludes FHLB stock and FRB stock which are carried at their respective redemption values, investment securities accounted for at modified cost as these investments do not have a readily determinable fair value, and Partnership Investments valued using the NAV practical expedient.

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Contract with Customer, Asset and Liability [Table Text Block]	Three Months Ended Revenue by Operating Segment (in thousands) PNB GFSC All Other Total Income from fiduciary activities Personal trust and agency accounts $ 2,151 $ — $ — $ 2,151 Employee benefit and retirement-related accounts 1,753 — — 1,753 Investment management and investment advisory agency accounts 2,547 — — 2,547 Other 391 — — 391 Service charges on deposit accounts Non-sufficient funds (NSF) fees 1,911 — — 1,911 Demand deposit account (DDA) charges 784 — — 784 Other 169 — — 169 Other service income (1) Credit card 586 1 — 587 HELOC 71 — 1 72 Installment 62 — (88 ) (26 ) Real estate 3,226 — (1 ) 3,225 Commercial 262 — 140 402 Debit card fee income 5,313 — — 5,313 Bank owned life insurance income (2) 1,021 — 86 1,107 ATM fees 482 — — 482 OREO valuation adjustments (2) (41 ) — — (41 ) Loss on sale of OREO, net (53 ) — — (53 ) Net gain on sale of investment securities (2) 186 — — 186 Gain on equity securities, net (2) 240 — 3,095 3,335 Other components of net periodic pension benefit income (2) 1,147 13 23 1,183 Miscellaneous (3) 2,634 45 (21 ) 2,658 Total other income $ 24,842 $ 59 $ 3,235 $ 28,136 (1) Of the $4.3 million of aggregate revenue included within "Other service income", approximately $1.3 million is within the scope of ASC 606, with the remaining $3.0 million consisting primarily of residential real estate loan fees which are out of scope. (2) Not within the scope of ASC 606. (3) "Miscellaneous" income includes brokerage income, safe deposit box rentals, and miscellaneous bank fees totaling $2.7 million , all of which are within scope of ASC 606. Three Months Ended Revenue by Operating Segment (in thousands) PNB GFSC All Other Total Income from fiduciary activities Personal trust and agency accounts $ 1,994 $ — $ — $ 1,994 Employee benefit and retirement-related accounts 1,703 — — 1,703 Investment management and investment advisory agency accounts 2,353 — — 2,353 Other 368 — — 368 Service charges on deposit accounts Non-sufficient funds (NSF) fees 1,926 — — 1,926 Demand deposit account (DDA) charges 764 — — 764 Other 171 — — 171 Other service income (1) Credit card 592 6 — 598 HELOC 128 — — 128 Installment 60 — 6 66 Real estate 2,145 — — 2,145 Commercial 291 — 18 309 Debit card fee income 4,352 — — 4,352 Bank owned life insurance income (2) 960 — 1,625 2,585 ATM fees 500 — — 500 OREO valuation adjustments (2) (78 ) — 1 (77 ) Gain (loss) on sale of OREO, net 36 — (117 ) (81 ) Gain (loss) on equity securities, net (2) 228 — (139 ) 89 Other components of net periodic pension benefit income (2) 1,653 18 34 1,705 Miscellaneous (3) 2,413 39 14 2,466 Total other income $ 22,559 $ 63 $ 1,442 $ 24,064 (1) Of the $3.2 million of aggregate revenue included within "Other service income", approximately $1.1 million is within the scope of ASC 606, with the remaining $2.1 million consisting primarily of residential real estate loan fees which are out of scope. (2) Not within the scope of ASC 606. (3) "Miscellaneous" income includes brokerage income, safe deposit box rentals, and miscellaneous bank fees totaling $2.5 million , all of which are within scope of ASC 606.

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets						$ (995,000)
Other Comprehensive Income (Loss), Transfers from Held-to-maturity to Available-for-Sale Securities, Net of Tax	$ 19,095,000	$ 0	$ 19,095,000	$ 0
Retained Earnings [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets					$ (143,000)
Retained Earnings [Member] | Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets					$ 143,000
Retained Earnings [Member] | Accounting Standards Update 2016-01 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets						$ 1,917,000
Other Assets [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			11,000,000
Other Liabilities [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			$ 11,200,000

Business Combinations (Details)

Business Combinations (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Apr. 01, 2019	Jul. 01, 2018
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value						$ 578,577,000	$ 272,753,000
Business Acquisition, Share Price						$ 3.80	$ 1.08
Business Combination, Consideration Transferred [Abstract]
Payments to Acquire Businesses, Gross			$ 28,630,000		$ 30,684,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable			98,275,000		48,519,000
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value					7,000,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Fair Value Method			126,905,000		86,203,000
Business Acquisition, Percentage of Voting Interests Acquired							91.45%
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage							8.55%
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain					$ 3,500,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents						$ 23,799,000	$ 42,954,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities						97,606,000	1,954,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables						578,577,000	272,753,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment [Abstract]						8,337,000	940,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets						31,675,000	6,133,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets							1,300,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities						632,649,000	284,231,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets						750,245,000	332,283,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities						35,951,000	2,254,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles						10,251,000	6,249,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities						668,600,000	286,485,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net						81,645,000	45,798,000
Business Combination, Acquired Receivables, Gross Contractual Amount						$ 589,698,000	$ 277,919,000
Business Combination, Consideration Transferred allocation percentage stock					60.00%
Business Combination, Consideration Transferred allocation percentage cash					40.00%
Goodwill, Acquired During Period			45,260,000	$ 40,405,000	$ 40,405,000
Goodwill, Translation and Purchase Accounting Adjustments	$ 58,000
NewDominion [Member]
Business Combination, Consideration Transferred [Abstract]
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Cost Expensed	4,000	$ 3,100,000	83,000	3,700,000
Carolina Alliance [Member]
Business Combination, Consideration Transferred [Abstract]
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Cost Expensed	$ 700,000		$ 6,900,000	$ 251,000
Common Stock [Member]
Business Acquisition [Line Items]
Business Acquisition, Share Price						$ 0.1378	$ 0.01023
Commercial, Financial, and Agricultural [Member]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value						$ 79,373,000	$ 19,138,000
Business Combination, Consideration Transferred [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount						79,537,000	19,246,000
Commercial Real Estate [Member]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value						273,855,000	117,638,000
Business Combination, Consideration Transferred [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount						281,425,000	119,434,000
Construction Real Estate Commercial [Domain]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value						42,176,000	22,235,000
Business Combination, Consideration Transferred [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount						43,106,000	22,494,000
Construction Real Estate - Mortgage [Member]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value						10,633,000	8,111,000
Business Combination, Consideration Transferred [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount						11,130,000	8,391,000
Residential Real Estate Commercial [Member]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value						48,684,000	14,797,000
Business Combination, Consideration Transferred [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount						48,546,000	14,798,000
Residential Real Estate - Mortgage [Member]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value						30,969,000	48,714,000
Business Combination, Consideration Transferred [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount						30,519,000	50,295,000
Residential Real Estate Home Equity Line Of Credit [Member]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value						39,526,000	36,688,000
Business Combination, Consideration Transferred [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount						40,227,000	37,651,000
Consumer Loan [Member]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value						4,647,000	539,000
Business Combination, Consideration Transferred [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount						4,813,000	541,000
Finance Leases Portfolio Segment [Member]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value						28,781,000
Business Combination, Consideration Transferred [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount						28,589,000
Purchased credit impaired [Member]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value						19,933,000	4,893,000
Business Combination, Consideration Transferred [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount						21,806,000	5,069,000
Performing Financial Instruments [Member]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value						558,600,000	267,900,000
Business Combination, Consideration Transferred [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount						$ 570,800,000	$ 273,700,000

Business Combinations Business

Business Combinations Business Combination Pro Forma (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Business Acquisition [Line Items]
Business Acquisition, Pro Forma Revenue	$ 227,585	$ 225,753
Business Acquisition, Pro Forma Net Income (Loss)	$ 85,720	$ 94,509
Business Acquisition, Pro Forma Earnings Per Share, Basic	$ 5.18	$ 5.64
Business Acquisition, Pro Forma Earnings Per Share, Diluted	$ 5.15	$ 5.59

Investment Securities (Narrativ

Investment Securities (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Schedule of Investments [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
Available-for-sale Securities, Gross Realized Losses	$ 67,000		$ 692,000	$ 2,600,000
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	(39,000)		88,000	538,000
Debt securities held-to-maturity, at amortized cost (fair value of $351,422 at December 31, 2018)					$ 351,808,000
Debt Securities, Held-to-maturity, Sold, Realized Gain (Loss)				291,000
Debt securities, held to maturity, realized gain (loss), tax				$ 61,000
percent of held to securities sold paid down		96.30%		96.30%
Other than Temporary Impairment Losses, Investments	0		0	$ 0
Available-for-sale Securities, Gross Realized Gains	253,000		$ 271,000	60,000
Asset backed securities mortgage portfolio, term			15 years
Debt Securities, Held-to-maturity, Transfer, Amount	373,900,000		$ 349,773,000	0
Debt Securities, Available-for-sale, Amortized Cost	1,237,990,000		1,237,990,000		1,028,883,000
Other Comprehensive Income (Loss), Transfers from Held-to-maturity to Available-for-Sale Securities, Net of Tax	19,095,000	$ 0	19,095,000	0
Securities sold at a gain [Member]
Schedule of Investments [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	14,000		145,000	551,000
Debt Securities, Available-for-sale, Amortized Cost	62,400,000	245,000,000	62,400,000	245,000,000
Securities sold at a gain [Member] | QTD Sold [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	10,700,000		10,700,000
Securities sold at a gain [Member]
Schedule of Investments [Line Items]
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax	53,000		57,000	13,000
Debt securities held-to-maturity, at amortized cost (fair value of $351,422 at December 31, 2018)		7,400,000		7,400,000
Debt Securities, Available-for-sale, Amortized Cost	29,100,000	$ 2,000,000	29,100,000	$ 2,000,000
Securities sold at a gain [Member] | QTD Sold [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	23,800,000		23,800,000
U.S. Government Sponsored Entities Asset-Backed Securities [Member]
Schedule of Investments [Line Items]
Debt securities held-to-maturity, at amortized cost (fair value of $351,422 at December 31, 2018)					46,530,000
Debt Securities, Available-for-sale, Amortized Cost	934,468,000		934,468,000		1,028,883,000
Collateral Pledged [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Restricted	$ 574,000,000		$ 574,000,000		$ 634,000,000

Investment Securities (Schedule

Investment Securities (Schedule Of Investment Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 1,237,990	$ 1,028,883
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	28,756	453
Securities Available-for-Sale, Gross Unrealized Holding Losses	6,460	25,915
Debt Securities, Available-for-sale	1,260,286	1,003,421
Securities Held-to-Maturity, Amortized Cost		351,808
Securities Held-to-Maturity, Gross Unrecognized Holding Gains		3,289
Securities Held-to-Maturity, Gross Unrecognized Holding Losses		3,675
Securities held-to-maturity, fair value		351,422
U.S. Government Sponsored Entities Asset-Backed Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	934,468	1,028,883
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	10,373	453
Securities Available-for-Sale, Gross Unrealized Holding Losses	6,460	25,915
Debt Securities, Available-for-sale	938,381	1,003,421
Securities Held-to-Maturity, Amortized Cost		46,530
Securities Held-to-Maturity, Gross Unrecognized Holding Gains		87
Securities Held-to-Maturity, Gross Unrecognized Holding Losses		1,003
Securities held-to-maturity, fair value		45,614
US States and Political Subdivisions Debt Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	303,522
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	18,383
Debt Securities, Available-for-sale	$ 321,905
Securities Held-to-Maturity, Amortized Cost		305,278
Securities Held-to-Maturity, Gross Unrecognized Holding Gains		3,202
Securities Held-to-Maturity, Gross Unrecognized Holding Losses		2,672
Securities held-to-maturity, fair value		$ 305,808

Investment Securities (Schedu_2

Investment Securities (Schedule Of Unrealized Loss On Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule of Investments [Line Items]
Securities Available-for-Sale, Less than 12 months, Fair value	$ 251,414	$ 506,280
Securities Available-for-Sale, Less than 12 months, Unrealized losses	1,095	5,998
Securities Available-for-Sale, 12 months or longer, Fair value	181,807	449,569
Securities Available-for-Sale, 12 months or longer, Unrealized losses	5,365	19,917
Securities Available-for-Sale, Fair value, Total	433,221	955,849
Securities Available-for-Sale, Unrealized losses, Total	6,460	25,915
Securities Held-to-Maturity, Less than 12 months, Fair value		124,616
Securities Held-to-Maturity, Less than 12 months, Unrealized losses		1,933
Securities Held-to-Maturity, 12 months or longer, Fair value		77,654
Securities Held-to-Maturity, 12 months or longer, Unrealized losses		1,742
Securities Held-to-Maturity, Fair value, Total		202,270
Securities Held-to-Maturity, Unrealized losses, Total		3,675
U.S. Government Sponsored Entities Asset-Backed Securities [Member]
Schedule of Investments [Line Items]
Securities Available-for-Sale, Less than 12 months, Fair value	251,414	506,280
Securities Available-for-Sale, Less than 12 months, Unrealized losses	1,095	5,998
Securities Available-for-Sale, 12 months or longer, Fair value	181,807	449,569
Securities Available-for-Sale, 12 months or longer, Unrealized losses	5,365	19,917
Securities Available-for-Sale, Fair value, Total	433,221	955,849
Securities Available-for-Sale, Unrealized losses, Total	$ 6,460	25,915
Securities Held-to-Maturity, Less than 12 months, Fair value		32,656
Securities Held-to-Maturity, Less than 12 months, Unrealized losses		838
Securities Held-to-Maturity, 12 months or longer, Fair value		6,931
Securities Held-to-Maturity, 12 months or longer, Unrealized losses		165
Securities Held-to-Maturity, Fair value, Total		39,587
Securities Held-to-Maturity, Unrealized losses, Total		1,003
US States and Political Subdivisions Debt Securities [Member]
Schedule of Investments [Line Items]
Securities Held-to-Maturity, Less than 12 months, Fair value		91,960
Securities Held-to-Maturity, Less than 12 months, Unrealized losses		1,095
Securities Held-to-Maturity, 12 months or longer, Fair value		70,723
Securities Held-to-Maturity, 12 months or longer, Unrealized losses		1,577
Securities Held-to-Maturity, Fair value, Total		162,683
Securities Held-to-Maturity, Unrealized losses, Total		$ 2,672

Investment Securities (Amortize

Investment Securities (Amortized Cost And Estimated Fair Value Of Investments In Debt Securities By Contractual Maturity) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 1,237,990	$ 1,028,883
Securities Available-for-Sale, Total Fair value	1,260,286	1,003,421
Securities Held-to-Maturity, Amortized Cost		351,808
Securities held-to-maturity, fair value		351,422
US States and Political Subdivisions Debt Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost	3,998
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value	$ 4,140
Debt Securities, Available-for-sale, Maturity, after Five Through Ten Years, Weighted Average Yield	3.04%
Debt Securities, Available-for-sale, Allocated and Single Maturity Date, Maturity, after 10 Years, Amortized Cost	$ 299,524
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, after 10 Years, Fair Value	$ 317,765
Debt Securities, Available-for-sale, Maturity, after 10 Years, Weighted Average Yield	3.69%
Debt Securities, Available-for-sale, Amortized Cost	$ 303,522
Securities Available-for-Sale, Total Fair value	$ 321,905
Available for Sale Securities Weighted Avg Yield	3.68%
Securities Held-to-Maturity, Amortized Cost		305,278
Securities held-to-maturity, fair value		305,808
U.S. Government Sponsored Entities Asset-Backed Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 934,468	1,028,883
Securities Available-for-Sale, Total Fair value	$ 938,381	1,003,421
Available for Sale Securities Weighted Avg Yield	2.37%
Securities Held-to-Maturity, Amortized Cost		46,530
Securities held-to-maturity, fair value		$ 45,614

Other Investment Securities (Sc

Other Investment Securities (Schedule Of Other Investment Securities) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Schedule of Investments [Line Items]
equity investment shares sold			99,646
Proceeds from Sale of Federal Home Loan Bank Stock			$ 10,000,000
equity investment purchased, shares			128,553
Federal Home Loan Bank Stock	$ 33,424,000		$ 33,424,000		$ 43,388,000
Federal Reserve Bank Stock	14,653,000		14,653,000		8,225,000
Equity investments carried at fair value	1,889,000		1,889,000		1,649,000
Equity Method Investments	2,689,000		2,689,000		2,589,000
Alternative Investment	15,989,000		15,989,000		17,065,000
Other investment securities	68,644,000		68,644,000		72,916,000
Gain on equity securities, net	3,335,000	$ 89,000	5,309,000	$ 4,633,000
Alternative Investment, income recognized	3,300,000	415,000	5,100,000	1,200,000
Equity Securities, FV-NI, Unrealized Gain				3,500,000
securities purchased [Member]
Schedule of Investments [Line Items]
Federal Reserve Bank Stock	6,400,000		6,400,000
Equity Securities [Member]
Schedule of Investments [Line Items]
Gain on equity securities, net	58,000	$ (326,000)
Investments [Member]
Schedule of Investments [Line Items]
Gain on equity securities, net			241,000	$ (33,000)
Fair Value Measured at Net Asset Value Per Share [Member]
Schedule of Investments [Line Items]
Alternative Investment	$ 12,400,000		$ 12,400,000		$ 11,000,000

Loans (Narrative) (Details)

Loans (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Apr. 01, 2019	Jul. 01, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Business Combination, Acquired Receivable, Fair Value						$ 578,577,000	$ 272,753,000
Business Combination, Acquired Receivables, Gross Contractual Amount						589,698,000	277,919,000
Loans and Leases Receivable, Deferred Income	$ 15,900,000		$ 15,900,000		$ 12,500,000
Goodwill, Purchase Accounting Adjustments			13,400,000		4,400,000
Troubled Debt Restructuring, Classification removed	15,000	$ 200,000	38,000	$ 2,400,000
Partial Charge-Offs On Impaired Loans			5,633,000		11,246,000
Impaired Financing Receivable, Related Allowance	3,083,000		3,083,000		2,273,000
Recorded investment, related to loans	13,300,000		13,300,000		14,000,000
Troubled Debt Restructuring Included In Nonaccrual Loans	29,100,000		29,100,000		24,600,000
TDRs included in accruing loan totals	18,500,000		18,500,000		15,200,000
Nonaccrual Trouble Debt Restructuring Current	17,200,000		17,200,000		19,200,000
Commitments to lend additional funds to borrowers whose terms had been modified in a TDR	3,400,000		3,400,000		300,000
Specific reserves related to troubled debt restructuring	1,200,000		1,200,000
Additional Specific Reserves Related To Troubled Debt Restructuring	0	150,000	1,000	160,000
Financing Receivable, Modifications, Recorded Investment, During Period	7,866,000	3,704,000	16,229,000	6,566,000
Loan Modifications on Nonacrrual status	600,000	100,000	$ 1,800,000	500,000
Loan past due period before entering default status			30 days
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	900,000	1,100,000	$ 1,200,000	1,300,000
Deposit Liabilities Reclassified as Loans Receivable	2,000,000		2,000,000		2,300,000
Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Partial Charge-Offs On Impaired Loans			3,500,000		8,800,000
Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Partial Charge-Offs On Impaired Loans			2,100,000		2,400,000
Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	241,000	1,154,000	3,236,000	1,859,000
Commercial Real Estate [Member] | Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Impaired Financing Receivable, Related Allowance	0		0		0
Commercial Real Estate [Member] | Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Impaired Financing Receivable, Related Allowance	30,000		30,000		86,000
Accruing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	1,745,000	897,000	4,943,000	2,043,000
Loans modified during period	48,000	67,000	87,000	67,000
Accruing [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period			0	447,000
Nonaccrual [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	6,121,000	2,807,000	11,286,000	4,523,000
Loans modified during period	900,000	1,000,000	1,100,000	1,200,000
Nonaccrual [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	241,000	1,154,000	3,236,000	1,412,000
Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	11,900,000	6,600,000	21,400,000	17,000,000
Commercial Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	400,000	$ 0	600,000	$ 200,000
Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Business Combination, Acquired Receivable, Fair Value	3,300,000		3,300,000		4,400,000	19,900,000	4,900,000
Business Combination, Acquired Receivables, Gross Contractual Amount	3,400,000		3,400,000		$ 4,600,000	$ 21,800,000	$ 5,100,000
NewDominion [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Allowance for Loan and Lease Losses, Loans Acquired			0
Carolina Alliance [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Business Combination, Acquired Receivable, Fair Value	17,200,000		17,200,000
Business Combination, Acquired Receivables, Gross Contractual Amount	$ 18,900,000		18,900,000
Allowance for Loan and Lease Losses, Loans Acquired			$ 0

Loans (Composition Of Loan Port

Loans (Composition Of Loan Portfolio By Class Of Loan) (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Impaired Financing Receivable, Recorded Investment		$ 74,478	$ 46,760	$ 74,478	$ 46,760	$ 48,144
Loan balance		6,403,647		6,403,647		5,692,132
Accrued interest receivable		24,721		24,721		22,974
Recorded Investment		6,423,755		6,423,755		5,709,798
Impaired Financing Receivable, Average Recorded Investment		57,236	54,679	52,490	52,015
Impaired Financing Receivable, Interest Income, Cash Basis Method		412	485	1,142	1,292
Construction Real Estate Commercial [Domain]
Financing Receivable, Credit Quality Indicator [Line Items]
Impaired Financing Receivable, Recorded Investment		1,868	2,016	1,868	2,016
Loan balance		223,603		223,603		175,300
Accrued interest receivable		777		777		801
Recorded Investment		224,380		224,380		176,101
Impaired Financing Receivable, Average Recorded Investment		1,922	2,246	2,176	1,661
Impaired Financing Receivable, Interest Income, Cash Basis Method		1	4	23	31
Commercial Financial And Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Impaired Financing Receivable, Recorded Investment		31,485	16,026	31,485	16,026
Impaired Financing Receivable, Average Recorded Investment		23,468	23,247	18,368	22,686
Impaired Financing Receivable, Interest Income, Cash Basis Method		107	187	244	506
Construction Real Estate - Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loan balance		92,985		92,985		70,541
Accrued interest receivable		232		232		151
Recorded Investment		93,217		93,217		70,692
Construction Real Estate - Installment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loan balance		1,581		1,581		2,433
Accrued interest receivable		5		5		7
Recorded Investment		1,586		1,586		2,440
Residential Real Estate Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Impaired Financing Receivable, Recorded Investment		2,238	2,913	2,238	2,913
Loan balance		465,656		465,656		429,730
Accrued interest receivable		1,199		1,199		1,150
Recorded Investment		466,855		466,855		430,880
Impaired Financing Receivable, Average Recorded Investment		1,977	2,758	2,198	6,086
Impaired Financing Receivable, Interest Income, Cash Basis Method		27	26	72	84
Residential Real Estate - Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loan balance		1,174,421		1,174,421		1,134,278
Accrued interest receivable		1,529		1,529		1,227
Recorded Investment		1,175,950		1,175,950		1,135,505
Residential Real Estate - HELOC [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loan balance		231,007		231,007		215,283
Accrued interest receivable		1,185		1,185		1,159
Recorded Investment		232,192		232,192		216,442
Residential Real Estate - Installment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loan balance		13,027		13,027		14,327
Accrued interest receivable		34		34		36
Recorded Investment		13,061		13,061		14,363
Loans Receivable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Accrued interest receivable		20,108		20,108		17,666
Commercial Financial And Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loan balance	[1]	1,140,138		1,140,138		1,072,786
Accrued interest receivable	[1]	5,404		5,404		4,603
Recorded Investment	[1]	1,145,542		1,145,542		1,077,389
Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Impaired Financing Receivable, Recorded Investment		38,799	25,805	38,799	25,805
Loan balance	[1]	1,599,697		1,599,697		1,283,045
Accrued interest receivable	[1]	5,767		5,767		4,750
Recorded Investment	[1]	1,605,464		1,605,464		1,287,795
Impaired Financing Receivable, Average Recorded Investment		29,779	26,428	29,712	21,582
Impaired Financing Receivable, Interest Income, Cash Basis Method		277	$ 268	803	$ 671
Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loan balance		1,430,400		1,430,400		1,292,136
Accrued interest receivable		3,946		3,946		3,756
Recorded Investment		1,434,346		1,434,346		1,295,892
Finance Leases Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loan balance		31,132		31,132		2,273
Accrued interest receivable		30		30		26
Recorded Investment		31,162		31,162		$ 2,299
Finance Leases Portfolio Segment [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Impaired Financing Receivable, Recorded Investment		88		88
Impaired Financing Receivable, Average Recorded Investment		$ 90		$ 36
[1]	Included within each of commercial, financial and agricultural loans and commercial real estate 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 ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Impaired Financing Receivable, Recorded Investment	$ 74,478	$ 46,760	$ 74,478	$ 46,760	$ 48,144
Nonaccrual loans	89,555		89,555		67,954
Accruing restructured loans	18,485		18,485		15,222
Loans past due 90 days or more and accruing	3,348		3,348		2,302
Total nonperforming loans	111,388		111,388		85,478
Impaired Financing Receivable, Average Recorded Investment	57,236	54,679	52,490	52,015
Impaired Financing Receivable, Interest Income, Cash Basis Method	412	485	1,142	1,292
Commercial Financial And Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Impaired Financing Receivable, Recorded Investment	31,485	16,026	31,485	16,026
Nonaccrual loans	28,099		28,099		14,998
Accruing restructured loans	3,430		3,430		196
Loans past due 90 days or more and accruing	0		0		10
Total nonperforming loans	31,529		31,529		15,204
Impaired Financing Receivable, Average Recorded Investment	23,468	23,247	18,368	22,686
Impaired Financing Receivable, Interest Income, Cash Basis Method	107	187	244	506
Construction Real Estate Commercial [Domain]
Financing Receivable, Credit Quality Indicator [Line Items]
Impaired Financing Receivable, Recorded Investment	1,868	2,016	1,868	2,016
Nonaccrual loans	1,786		1,786		1,866
Accruing restructured loans	82		82		0
Loans past due 90 days or more and accruing	235		235		0
Total nonperforming loans	2,103		2,103		1,866
Impaired Financing Receivable, Average Recorded Investment	1,922	2,246	2,176	1,661
Impaired Financing Receivable, Interest Income, Cash Basis Method	1	4	23	31
Construction Real Estate - Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual loans	27		27
Accruing restructured loans	7		7		15
Loans past due 90 days or more and accruing	0		0		20
Total nonperforming loans	34		34		35
Construction Real Estate - Installment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual loans	73		73		19
Accruing restructured loans	6		6		9
Loans past due 90 days or more and accruing	12		12		0
Total nonperforming loans	91		91		28
Residential Real Estate Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Impaired Financing Receivable, Recorded Investment	2,238	2,913	2,238	2,913
Nonaccrual loans	2,224		2,224		2,610
Accruing restructured loans	14		14		122
Loans past due 90 days or more and accruing	0		0
Total nonperforming loans	2,238		2,238		2,732
Impaired Financing Receivable, Average Recorded Investment	1,977	2,758	2,198	6,086
Impaired Financing Receivable, Interest Income, Cash Basis Method	27	26	72	84
Residential Real Estate - Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual loans	15,367		15,367		16,892
Accruing restructured loans	8,821		8,821		9,100
Loans past due 90 days or more and accruing	1,641		1,641		1,124
Total nonperforming loans	25,829		25,829		27,116
Residential Real Estate - HELOC [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual loans	1,700		1,700		2,158
Accruing restructured loans	1,021		1,021		1,028
Loans past due 90 days or more and accruing	56		56		9
Total nonperforming loans	2,777		2,777		3,195
Residential Real Estate - Installment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual loans	512		512		468
Accruing restructured loans	1,915		1,915		1,049
Loans past due 90 days or more and accruing	0		0		24
Total nonperforming loans	2,427		2,427		1,541
Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Impaired Financing Receivable, Recorded Investment	38,799	25,805	38,799	25,805
Nonaccrual loans	36,663		36,663		25,566
Accruing restructured loans	2,136		2,136		2,860
Loans past due 90 days or more and accruing	625		625
Total nonperforming loans	39,424		39,424		28,426
Impaired Financing Receivable, Average Recorded Investment	29,779	26,428	29,712	21,582
Impaired Financing Receivable, Interest Income, Cash Basis Method	277	$ 268	803	$ 671
Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual loans	3,016		3,016		3,377
Accruing restructured loans	1,053		1,053		843
Loans past due 90 days or more and accruing	570		570		1,115
Total nonperforming loans	4,639		4,639		5,335
Finance Leases Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual loans	88		88		0
Accruing restructured loans	0		0		0
Loans past due 90 days or more and accruing	209		209		0
Total nonperforming loans	297		297		$ 0
Finance Leases Portfolio Segment [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Impaired Financing Receivable, Recorded Investment	88		88
Impaired Financing Receivable, Average Recorded Investment	$ 90		$ 36

Loans (Loans Individually And C

Loans (Loans Individually And Collectively Evaluated For Impairment) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	$ 3,083	$ 2,273
Nonaccrual and accruing restructured loans	108,040	83,176
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	74,478	48,144
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	33,562	35,032
Partial Charge-Offs On Impaired Loans	5,633	11,246
Commercial Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	31,529	15,194
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	31,485	15,120
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	44	74
Construction Real Estate Commercial [Domain]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	1,868	1,866
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	1,868	1,866
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	34	15
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	0	0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	34	15
Construction Real Estate - Installment [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	79	28
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	0	0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	79	28
Residential Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	2,238	2,732
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	2,238	2,732
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	24,188	25,992
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	0	0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	24,188	25,992
Residential Real Estate - HELOC [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	2,721	3,186
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	0	0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	2,721	3,186
Residential Real Estate - Installment [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	2,427	1,517
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	0	0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	2,427	1,517
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	30	86
Nonaccrual and accruing restructured loans	38,799	28,426
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	38,799	28,426
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	4,069	4,220
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	4,069	4,220
Finance Leases Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	25	0
Nonaccrual and accruing restructured loans	88
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	88
Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Partial Charge-Offs On Impaired Loans	$ 3,500	$ 8,800

Loans (Loans Individually Evalu

Loans (Loans Individually Evaluated For Impairment By Class Of Loans) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	$ 80,056		$ 80,056		$ 59,381
Recorded investment	74,478	$ 46,760	74,478	$ 46,760	48,144
Allowance for loan losses allocated	3,083		3,083		2,273
Impaired Financing Receivable, Average Recorded Investment	57,236	54,679	52,490	52,015
Impaired Financing Receivable, Interest Income, Cash Basis Method	412	485	1,142	1,292
Commercial Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	31,485	16,026	31,485	16,026
Impaired Financing Receivable, Average Recorded Investment	23,468	23,247	18,368	22,686
Impaired Financing Receivable, Interest Income, Cash Basis Method	107	187	244	506
Commercial Financial And Agricultural [Member] | Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	19,140		19,140		8,999
Recorded investment	18,783		18,783		3,713
Allowance for loan losses allocated	0		0		0
Commercial Financial And Agricultural [Member] | Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	14,839		14,839		13,736
Recorded investment	12,702		12,702		11,407
Allowance for loan losses allocated	2,917		2,917		2,169
Construction Real Estate Commercial [Domain]
Financing Receivable, Impaired [Line Items]
Recorded investment	1,868	2,016	1,868	2,016
Impaired Financing Receivable, Average Recorded Investment	1,922	2,246	2,176	1,661
Impaired Financing Receivable, Interest Income, Cash Basis Method	1	4	23	31
Construction Real Estate Commercial [Domain] | Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	4,682		4,682		4,679
Recorded investment	1,868		1,868		1,866
Allowance for loan losses allocated	0		0		0
Residential Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	2,238	2,913	2,238	2,913
Impaired Financing Receivable, Average Recorded Investment	1,977	2,758	2,198	6,086
Impaired Financing Receivable, Interest Income, Cash Basis Method	27	26	72	84
Residential Real Estate Commercial [Member] | Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	2,101		2,101		2,691
Recorded investment	2,035		2,035		2,374
Allowance for loan losses allocated	0		0		0
Residential Real Estate Commercial [Member] | Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	203		203		358
Recorded investment	203		203		358
Allowance for loan losses allocated	111		111		18
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	38,799	25,805	38,799	25,805
Impaired Financing Receivable, Average Recorded Investment	29,779	26,428	29,712	21,582
Impaired Financing Receivable, Interest Income, Cash Basis Method	277	$ 268	803	$ 671
Commercial Real Estate [Member] | Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	38,723		38,723		26,663
Recorded investment	38,519		38,519		26,213
Allowance for loan losses allocated	0		0		0
Commercial Real Estate [Member] | Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	280		280		2,255
Recorded investment	280		280		2,213
Allowance for loan losses allocated	30		30		86
Finance Leases Portfolio Segment [Member] | Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Allowance for loan losses allocated	0		0		$ 0
Finance Leases Portfolio Segment [Member] | Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	88		88
Recorded investment	88		88
Allowance for loan losses allocated	25		25
Finance Leases Portfolio Segment [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	88		88
Impaired Financing Receivable, Average Recorded Investment	$ 90		$ 36

Loans (Average Recorded Investm

Loans (Average Recorded Investment And Interest Income Recognized On Loans Individually Evaluated For Impairment) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 74,478	$ 46,760	$ 74,478	$ 46,760	$ 48,144
Average recorded investment	57,236	54,679	52,490	52,015
Interest income recognized	412	485	1,142	1,292
Commercial Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	31,485	16,026	31,485	16,026
Average recorded investment	23,468	23,247	18,368	22,686
Interest income recognized	107	187	244	506
Construction Real Estate Commercial [Domain]
Financing Receivable, Impaired [Line Items]
Recorded investment	1,868	2,016	1,868	2,016
Average recorded investment	1,922	2,246	2,176	1,661
Interest income recognized	1	4	23	31
Residential Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	2,238	2,913	2,238	2,913
Average recorded investment	1,977	2,758	2,198	6,086
Interest income recognized	27	26	72	84
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	38,799	25,805	38,799	25,805
Average recorded investment	29,779	26,428	29,712	21,582
Interest income recognized	277	$ 268	803	$ 671
Finance Leases Portfolio Segment [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	88		88
Average recorded investment	$ 90		$ 36

Loans (Aging Of Recorded Invest

Loans (Aging Of Recorded Investment In Past Due Loans) (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 30, 2019		Sep. 30, 2018	Sep. 30, 2019		Sep. 30, 2018	Dec. 31, 2018
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		$ 20,021			$ 20,021			$ 29,919
Past due nonaccrual loans and loans past due 90 days or more and accruing		27,185	[1]		27,185	[1]		19,602	[2]
Total loans past due		47,206			47,206			49,521
Total current		6,376,549			6,376,549			5,660,277
Recorded Investment		6,423,755			6,423,755			5,709,798
Loans past due 90 days or more and accruing		3,348			3,348			2,302
Impaired Financing Receivable, Recorded Investment, Nonaccrual loans which are current in regards to contractual P&I payments		65,700			65,700			50,700
Financing Receivable, Modifications, Recorded Investment, During Period		7,866		$ 3,704	16,229		$ 6,566
Construction Real Estate Commercial [Domain]
Financing Receivable, Past Due [Line Items]
Past due nonaccrual loans and loans past due 90 days or more and accruing		2,023	[1]		2,023	[1]		1,635	[2]
Total loans past due		2,023			2,023			1,635
Total current		222,357			222,357			174,466
Recorded Investment		224,380			224,380			176,101
Loans past due 90 days or more and accruing		235			235			0
Financing Receivable, Modifications, Recorded Investment, During Period		82			82		0
Commercial Financial And Agricultural [Member]
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		2,570			2,570			4,786
Past due nonaccrual loans and loans past due 90 days or more and accruing		10,602	[1]		10,602	[1]		1,375	[2]
Total loans past due		13,172			13,172			6,161
Total current		1,132,370			1,132,370			1,071,228
Loans past due 90 days or more and accruing		0			0			10
Financing Receivable, Modifications, Recorded Investment, During Period		5,754		574	9,296		800
Construction Real Estate - Mortgage [Member]
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		118			118			133
Past due nonaccrual loans and loans past due 90 days or more and accruing	[2]							20
Total loans past due		118			118			153
Total current		93,099			93,099			70,539
Recorded Investment		93,217			93,217			70,692
Loans past due 90 days or more and accruing		0			0			20
Financing Receivable, Modifications, Recorded Investment, During Period					0		0
Construction Real Estate - Installment [Member]
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days								28
Past due nonaccrual loans and loans past due 90 days or more and accruing		12	[1]		12	[1]		19	[2]
Total loans past due		12			12			47
Total current		1,574			1,574			2,393
Recorded Investment		1,586			1,586			2,440
Loans past due 90 days or more and accruing		12			12			0
Financing Receivable, Modifications, Recorded Investment, During Period					0		12
Residential Real Estate Commercial [Member]
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		40			40			683
Past due nonaccrual loans and loans past due 90 days or more and accruing		791	[1]		791	[1]		1,104	[2]
Total loans past due		831			831			1,787
Total current		466,024			466,024			429,093
Recorded Investment		466,855			466,855			430,880
Loans past due 90 days or more and accruing		0			0
Financing Receivable, Modifications, Recorded Investment, During Period		13		304	49		304
Residential Real Estate - Mortgage [Member]
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		10,196			10,196			13,210
Past due nonaccrual loans and loans past due 90 days or more and accruing		9,508	[1]		9,508	[1]		8,553	[2]
Total loans past due		19,704			19,704			21,763
Total current		1,156,246			1,156,246			1,113,742
Recorded Investment		1,175,950			1,175,950			1,135,505
Loans past due 90 days or more and accruing		1,641			1,641			1,124
Financing Receivable, Modifications, Recorded Investment, During Period		501		246	1,013		1,062
Residential Real Estate - HELOC [Member]
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		570			570			620
Past due nonaccrual loans and loans past due 90 days or more and accruing		845	[1]		845	[1]		907	[2]
Total loans past due		1,415			1,415			1,527
Total current		230,777			230,777			214,915
Recorded Investment		232,192			232,192			216,442
Loans past due 90 days or more and accruing		56			56			9
Financing Receivable, Modifications, Recorded Investment, During Period		138		469	364		860
Residential Real Estate - Installment [Member]
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		45			45			155
Past due nonaccrual loans and loans past due 90 days or more and accruing		269	[1]		269	[1]		274	[2]
Total loans past due		314			314			429
Total current		12,747			12,747			13,934
Recorded Investment		13,061			13,061			14,363
Loans past due 90 days or more and accruing		0			0			24
Financing Receivable, Modifications, Recorded Investment, During Period		421		336	1,003		453
Commercial Financial And Agricultural [Member]
Financing Receivable, Past Due [Line Items]
Recorded Investment	[3]	1,145,542			1,145,542			1,077,389
Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		673			673			780
Past due nonaccrual loans and loans past due 90 days or more and accruing		1,354	[1]		1,354	[1]		3,584	[2]
Total loans past due		2,027			2,027			4,364
Total current		1,603,437			1,603,437			1,283,431
Recorded Investment	[3]	1,605,464			1,605,464			1,287,795
Loans past due 90 days or more and accruing		625			625
Financing Receivable, Modifications, Recorded Investment, During Period		241		1,154	3,236		1,859
Consumer [Member]
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		5,758			5,758			9,524
Past due nonaccrual loans and loans past due 90 days or more and accruing		1,572	[1]		1,572	[1]		2,131	[2]
Total loans past due		7,330			7,330			11,655
Total current		1,427,016			1,427,016			1,284,237
Recorded Investment		1,434,346			1,434,346			1,295,892
Loans past due 90 days or more and accruing		570			570			1,115
Financing Receivable, Modifications, Recorded Investment, During Period		716		621	1,186		1,216
Finance Leases Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Accruing loans past due 30-89 days		51			51			0
Past due nonaccrual loans and loans past due 90 days or more and accruing		209	[1]		209	[1]		0	[2]
Total loans past due		260			260			0
Total current		30,902			30,902			2,299
Recorded Investment		31,162			31,162			2,299
Loans past due 90 days or more and accruing		209			209			$ 0
Accruing Financing Receivable Modifications [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		1,745		897	4,943		2,043
Accruing Financing Receivable Modifications [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		82			82		0
Accruing Financing Receivable Modifications [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		752		22	3,237		208
Accruing Financing Receivable Modifications [Member] | Construction Real Estate - Mortgage [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		0		0	0		0
Accruing Financing Receivable Modifications [Member] | Construction Real Estate - Installment [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		0		0	0		12
Accruing Financing Receivable Modifications [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		13		55	13		55
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		286		0	340		90
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - HELOC [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		31		453	121		735
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - Installment [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		407		336	951		437
Accruing Financing Receivable Modifications [Member] | Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period					0		447
Accruing Financing Receivable Modifications [Member] | Consumer [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		174		31	199		59
Nonaccruing Financing Receivable Modifications [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		6,121		2,807	11,286		4,523
Nonaccruing Financing Receivable Modifications [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period					0		0
Nonaccruing Financing Receivable Modifications [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		5,002		552	6,059		592
Nonaccruing Financing Receivable Modifications [Member] | Construction Real Estate - Mortgage [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period					0		0
Nonaccruing Financing Receivable Modifications [Member] | Construction Real Estate - Installment [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period					0		0
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period				249	36		249
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		215		246	673		972
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - HELOC [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		107		16	243		125
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Installment [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		14			52		16
Nonaccruing Financing Receivable Modifications [Member] | Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		241		1,154	3,236		1,412
Nonaccruing Financing Receivable Modifications [Member] | Consumer [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		$ 542		$ 590	$ 987		$ 1,157
[1]	1) Includes an aggregate of $3.3 million of loans past due 90 days or more and accruing. The remaining loans were past due nonaccrual loans. (2) Includes an aggregate of $65.7 million
[2]	1) Includes an aggregate of $2.3 million of loans past due 90 days or more and accruing. The remaining loans were past due nonaccrual loans. (2) Includes an aggregate of $50.7 million of nonaccrual loans which were current in regards to contractual principal and interest payments.
[3]	Included within each of commercial, financial and agricultural loans and commercial real estate 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 ($)		Sep. 30, 2019		Dec. 31, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Recorded Investment		$ 6,423,755,000		$ 5,709,798,000
Recorded Investment		6,403,647,000		5,692,132,000
Construction Real Estate Commercial [Domain]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Recorded Investment		224,380,000		176,101,000
Recorded Investment		223,603,000		175,300,000
Residential Real Estate Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Recorded Investment		466,855,000		430,880,000
Recorded Investment		465,656,000		429,730,000
Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Recorded Investment	[1]	1,605,464,000		1,287,795,000
Recorded Investment	[1]	1,599,697,000		1,283,045,000
Finance Leases Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Recorded Investment		31,162,000		2,299,000
Recorded Investment		31,132,000		2,273,000
5 Rated [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		43,341,000		16,048,000
5 Rated [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		3,852,000		1,560,000
5 Rated [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		1,001,000		272,000
5 Rated [Member] | Commercial, Financial, and Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		27,059,000	[2]	11,509,000	[3]
5 Rated [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		11,429,000	[2]	2,707,000	[3]
5 Rated [Member] | Finance Leases Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		0		0
6 Rated [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		1,594,000		485,000
6 Rated [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment				0
6 Rated [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		33,000		41,000
6 Rated [Member] | Commercial, Financial, and Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		315,000	[2]	444,000	[3]
6 Rated [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment	[2]	1,246,000
6 Rated [Member] | Finance Leases Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		0		0
Impaired [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		74,522,000		48,218,000
Impaired [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		1,868,000		1,866,000
Impaired [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		2,238,000		2,732,000
Impaired [Member] | Commercial, Financial, and Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		31,529,000	[2]	15,194,000	[3]
Impaired [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		38,799,000	[2]	28,426,000	[3]
Impaired [Member] | Finance Leases Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		88,000		0
Purchased credit impaired [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		19,180,000		3,961,000
Purchased credit impaired [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		1,288,000		503,000
Purchased credit impaired [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		1,926,000		251,000
Purchased credit impaired [Member] | Commercial, Financial, and Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment	[2]	4,803,000		148,000
Purchased credit impaired [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment	[2]	10,595,000		3,059,000
Purchased credit impaired [Member] | Finance Leases Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment				0
Pass Rated [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		3,334,766,000		2,905,752,000
Pass Rated [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		217,372,000		172,172,000
Pass Rated [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		461,657,000		427,584,000
Pass Rated [Member] | Commercial, Financial, and Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment	[2]	1,081,836,000		1,050,094,000
Pass Rated [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment	[2]	1,543,395,000		1,253,603,000
Pass Rated [Member] | Finance Leases Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total ending loan balance, recorded investment		30,506,000		2,299,000
Recorded Investment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment		3,473,403,000		2,974,464,000
Recorded Investment [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment		224,380,000		176,101,000
Recorded Investment [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment		466,855,000		430,880,000
Recorded Investment [Member] | Commercial, Financial, and Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment	[2]	1,145,542,000		1,077,389,000
Recorded Investment [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment	[2]	1,605,464,000		1,287,795,000
Recorded Investment [Member] | Finance Leases Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Recorded Investment		31,162,000		2,299,000
Financial Asset Acquired with Credit Deterioration [Member] | Nonperforming Financial Instruments [Member] | Purchased credit impaired [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans and Leases Receivable, Recorded Investment		11,000		475,000
Total ending loan balance, recorded investment		$ 11,000		$ 475,000
[1]	Included within each of commercial, financial and agricultural loans and commercial real estate loans is an immaterial amount of consumer loans that are not broken out by class.
[2]	* Included within each of commercial, financial and agricultural loans and commercial real estate loans is an immaterial amount of consumer loans that are not broken out by class.
[3]	* Included within each of commercial, financial and agricultural loans and commercial real estate 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)	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)contracts	Sep. 30, 2018USD ($)contracts	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
Additional Specific Reserves Related To Troubled Debt Restructuring	$ 0	$ 150,000	$ 1,000	$ 160,000
Troubled Debt Restructuring, Classification removed	$ 15,000	$ 200,000	$ 38,000	$ 2,400,000
Number of Contracts	107	106	342	289
Total Recorded Investment	$ 7,866,000	$ 3,704,000	$ 16,229,000	$ 6,566,000
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	$ 900,000	$ 1,100,000	$ 1,200,000	$ 1,300,000
Construction Real Estate - Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts	0	0	1	0
Total Recorded Investment			$ 0	$ 0
Commercial Financial And Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts	8	8	24	16
Total Recorded Investment	$ 5,754,000	$ 574,000	$ 9,296,000	$ 800,000
Residential Real Estate Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts	1	2	2	2
Total Recorded Investment	$ 13,000	$ 304,000	$ 49,000	$ 304,000
Residential Real Estate - Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts	4	4	18	17
Total Recorded Investment	$ 501,000	$ 246,000	$ 1,013,000	$ 1,062,000
Construction Real Estate - Installment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts	0	0	0	2
Total Recorded Investment			$ 0	$ 12,000
Residential Real Estate Installment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment	$ 421,000	$ 336,000	$ 1,003,000	$ 453,000
Residential Real Estate Home Equity Line Of Credit [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts	6	10	14	18
Total Recorded Investment	$ 138,000	$ 469,000	$ 364,000	$ 860,000
Construction Real Estate Commercial [Domain]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts	1	0	2	1
Total Recorded Investment	$ 82,000		$ 82,000	$ 0
Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts	1	3	5	10
Total Recorded Investment	$ 241,000	$ 1,154,000	$ 3,236,000	$ 1,859,000
Residential Real Estate Installment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts	9	8	25	17
Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts	77	71	251	206
Total Recorded Investment	$ 716,000	$ 621,000	$ 1,186,000	$ 1,216,000
Accruing [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment	1,745,000	897,000	4,943,000	2,043,000
Accruing [Member] | Construction Real Estate - Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment	0	0	0	0
Accruing [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment	752,000	22,000	3,237,000	208,000
Accruing [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment	13,000	55,000	13,000	55,000
Accruing [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment	286,000	0	340,000	90,000
Accruing [Member] | Construction Real Estate - Installment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment	0	0	0	12,000
Accruing [Member] | Residential Real Estate Installment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment	407,000	336,000	951,000	437,000
Accruing [Member] | Residential Real Estate Home Equity Line Of Credit [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment	31,000	453,000	121,000	735,000
Accruing [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment	82,000		82,000	0
Accruing [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment			0	447,000
Accruing [Member] | Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment	174,000	31,000	199,000	59,000
Nonaccrual [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment	6,121,000	2,807,000	11,286,000	4,523,000
Nonaccrual [Member] | Construction Real Estate - Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment			0	0
Nonaccrual [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment	5,002,000	552,000	6,059,000	592,000
Nonaccrual [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment		249,000	36,000	249,000
Nonaccrual [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment	215,000	246,000	673,000	972,000
Nonaccrual [Member] | Construction Real Estate - Installment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment			0	0
Nonaccrual [Member] | Residential Real Estate Installment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment	14,000		52,000	16,000
Nonaccrual [Member] | Residential Real Estate Home Equity Line Of Credit [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment	107,000	16,000	243,000	125,000
Nonaccrual [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment			0	0
Nonaccrual [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment	241,000	1,154,000	3,236,000	1,412,000
Nonaccrual [Member] | Consumer [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment	542,000	590,000	987,000	1,157,000
Commercial Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Recorded Investment	$ 400,000	$ 0	$ 600,000	$ 200,000

Loans (Recorded Investment In F

Loans (Recorded Investment In Financing Receivable Modified As TDR Within 12 Months) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)contracts	Sep. 30, 2018USD ($)contracts	Sep. 30, 2019USD ($)contracts	Sep. 30, 2018USD ($)contracts	Dec. 31, 2018USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
Troubled Debt Restructuring, Classification removed	$ 15,000	$ 200,000	$ 38,000	$ 2,400,000
Number of Contracts | contracts	64	52	78	63
Recorded Investment	$ 937,000	$ 1,112,000	$ 1,209,000	$ 1,290,000
Financing Receivable, Modifications, Recorded Investment, During Period	7,866,000	$ 3,704,000	16,229,000	6,566,000
Troubled Debt Restructuring Included In Nonaccrual Loans	29,100,000		29,100,000		$ 24,600,000
Nonaccrual Trouble Debt Restructuring Current	$ 17,200,000		17,200,000		$ 19,200,000
Construction Real Estate - Installment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period			$ 0	$ 12,000
Commercial Financial And Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts | contracts	2	1	3	1
Recorded Investment	$ 2,000	$ 1,000	$ 65,000	$ 1,000
Financing Receivable, Modifications, Recorded Investment, During Period	$ 5,754,000	$ 574,000	$ 9,296,000	$ 800,000
Residential Real Estate Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts | contracts	0	0	1	0
Recorded Investment			$ 13,000
Financing Receivable, Modifications, Recorded Investment, During Period	$ 13,000	$ 304,000	$ 49,000	$ 304,000
Residential Real Estate - Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts | contracts	4	8	7	9
Recorded Investment	$ 257,000	$ 688,000	$ 370,000	$ 789,000
Financing Receivable, Modifications, Recorded Investment, During Period	$ 501,000	$ 246,000	$ 1,013,000	$ 1,062,000
Residential Real Estate - HELOC [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts | contracts	5	3	7	3
Recorded Investment	$ 135,000	$ 108,000	$ 165,000	$ 108,000
Financing Receivable, Modifications, Recorded Investment, During Period	138,000	469,000	364,000	860,000
Construction Real Estate - Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period			0	0
Residential Real Estate - Installment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	$ 421,000	$ 336,000	$ 1,003,000	$ 453,000
Construction Real Estate Commercial [Domain]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts | contracts	0	0	0	0
Financing Receivable, Modifications, Recorded Investment, During Period	$ 82,000		$ 82,000	$ 0
Consumer Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	$ 716,000	$ 621,000	$ 1,186,000	$ 1,216,000
Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts | contracts	0	0	0	0
Financing Receivable, Modifications, Recorded Investment, During Period	$ 241,000	$ 1,154,000	$ 3,236,000	$ 1,859,000
Construction Real Estate - Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts | contracts	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Construction Real Estate - Installment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts | contracts	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Residential Real Estate - Installment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts | contracts	2	0	2	0
Recorded Investment	$ 66,000	$ 0	$ 66,000	$ 0
Consumer Loan [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts | contracts	51	40	58	50
Recorded Investment	$ 477,000	$ 315,000	$ 530,000	$ 392,000
Finance Leases Financing Receivable [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Number of Contracts | contracts	0	0	0	0
Recorded Investment	$ 0	$ 0	$ 0	$ 0
Accruing Financing Receivable Modifications [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	1,745,000	897,000	4,943,000	2,043,000
Accruing Financing Receivable Modifications [Member] | Construction Real Estate - Installment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	0	0	0	12,000
Accruing Financing Receivable Modifications [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	752,000	22,000	3,237,000	208,000
Accruing Financing Receivable Modifications [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	13,000	55,000	13,000	55,000
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	286,000	0	340,000	90,000
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - HELOC [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	31,000	453,000	121,000	735,000
Accruing Financing Receivable Modifications [Member] | Construction Real Estate - Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	0	0	0	0
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - Installment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	407,000	336,000	951,000	437,000
Accruing Financing Receivable Modifications [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	82,000		82,000	0
Accruing Financing Receivable Modifications [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	174,000	31,000	199,000	59,000
Accruing Financing Receivable Modifications [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period			0	447,000
Nonaccruing Financing Receivable Modifications [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	6,121,000	2,807,000	11,286,000	4,523,000
Nonaccruing Financing Receivable Modifications [Member] | Construction Real Estate - Installment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period			0	0
Nonaccruing Financing Receivable Modifications [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	5,002,000	552,000	6,059,000	592,000
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		249,000	36,000	249,000
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	215,000	246,000	673,000	972,000
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - HELOC [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	107,000	16,000	243,000	125,000
Nonaccruing Financing Receivable Modifications [Member] | Construction Real Estate - Mortgage [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period			0	0
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Installment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	14,000		52,000	16,000
Nonaccruing Financing Receivable Modifications [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period			0	0
Nonaccruing Financing Receivable Modifications [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	542,000	590,000	987,000	1,157,000
Nonaccruing Financing Receivable Modifications [Member] | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	$ 241,000	$ 1,154,000	$ 3,236,000	$ 1,412,000

Allowance For Loan Losses (Acti

Allowance For Loan Losses (Activity In The Allowance For Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for Loan and Lease Losses, Reserve Estimate Methodology, Historical Loss Period Factor					108 months	96 months
Financing Receivable, Allowance for Credit Loss, Writeoff	$ 2,479	$ 3,474	$ 8,394	$ 9,640
Financing Receivable, Allowance for Credit Loss, Recovery	2,362	1,328	6,351	5,312
Financing Receivables Allowance For Credit Losses Net Charge Offs	117	2,146	2,043	4,328
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	54,003	49,452	51,512	49,988	$ 49,988
Ending balance	55,853	50,246	55,853	50,246	51,512	$ 49,988
Provision for Loan, Lease, and Other Losses	1,967	2,940	6,384	4,586
Commercial Financial And Agricultural [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Writeoff	585	993	1,498	1,929
Financing Receivable, Allowance for Credit Loss, Recovery	403	136	983	994
Financing Receivables Allowance For Credit Losses Net Charge Offs	182	857	515	935
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	17,370	14,478	16,777	15,022	15,022
Ending balance	18,426	15,015	18,426	15,015	16,777	15,022
Provision for Loan, Lease, and Other Losses	1,238	1,394	2,164	928
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Writeoff	8	23	401	252
Financing Receivable, Allowance for Credit Loss, Recovery	246	27	360	203
Financing Receivables Allowance For Credit Losses Net Charge Offs	(238)	(4)	41	49
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	10,377	9,406	9,768	9,601	9,601
Ending balance	10,438	9,747	10,438	9,747	9,768	9,601
Provision for Loan, Lease, and Other Losses	(177)	337	711	195
Construction Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Writeoff	0	26	0	57
Financing Receivable, Allowance for Credit Loss, Recovery	432	156	543	435
Financing Receivables Allowance For Credit Losses Net Charge Offs	(432)	(130)	(543)	(378)
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,065	4,652	4,463	4,430	4,430
Ending balance	5,432	4,595	5,432	4,595	4,463	4,430
Provision for Loan, Lease, and Other Losses	(65)	(187)	426	(213)
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Writeoff	85	61	176	279
Financing Receivable, Allowance for Credit Loss, Recovery	98	130	640	734
Financing Receivables Allowance For Credit Losses Net Charge Offs	(13)	(69)	(464)	(455)
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	8,869	9,245	8,731	9,321	9,321
Ending balance	8,931	9,102	8,931	9,102	8,731	9,321
Provision for Loan, Lease, and Other Losses	49	(212)	(264)	(674)
Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Writeoff	1,801	2,371	6,319	7,123
Financing Receivable, Allowance for Credit Loss, Recovery	1,183	875	3,824	2,942
Financing Receivables Allowance For Credit Losses Net Charge Offs	618	1,496	2,495	4,181
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	12,265	11,671	11,773	11,614	11,614
Ending balance	12,555	11,787	12,555	11,787	11,773	11,614
Provision for Loan, Lease, and Other Losses	908	1,612	3,277	4,354
Finance Leases Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss, Writeoff	0	0	0	0
Financing Receivable, Allowance for Credit Loss, Recovery	0	4	1	4
Financing Receivables Allowance For Credit Losses Net Charge Offs	0	(4)	(1)	(4)
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	57	0	0	0	0
Ending balance	71	0	71	0	$ 0	$ 0
Provision for Loan, Lease, and Other Losses	$ 14	$ (4)	$ 70	$ (4)

Allowance For Loan Losses (Comp

Allowance For Loan Losses (Composition Of The Allowance For Loan Losses) (Details) - USD ($)		Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for loan losses individually evaluated for impairment		$ 3,083,000	$ 2,273,000
Allowance for loan losses collectively evaluated for impairment		52,770,000	49,239,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		0	0
Total ending allowance balance		55,853,000	51,512,000
Loans individually evaluated for impairment		74,424,000	48,135,000
Loans collectively evaluated for impairment		6,308,737,000	5,640,054,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance		20,486,000	3,943,000
Total ending loan balance, net of accrued interest receivable		$ 6,403,647,000	$ 5,692,132,000
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment		4.14%	4.72%
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment		0.84%	0.87%
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance as a percentage of loan balance		0.00%	0.00%
Total ending allowance for loan losses balance as a percentage of loan balance		0.87%	0.90%
Recorded investment		$ 74,478,000	$ 48,144,000
Recorded investment collectively evaluated for impairment		6,328,643,000	5,657,693,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		20,634,000	3,961,000
Recorded Investment		6,423,755,000	5,709,798,000
Commercial Financial And Agricultural [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for loan losses individually evaluated for impairment		2,917,000	2,169,000
Allowance for loan losses collectively evaluated for impairment		15,509,000	14,608,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		0	0
Total ending allowance balance		18,426,000	16,777,000
Loans individually evaluated for impairment		31,472,000	15,119,000
Loans collectively evaluated for impairment		1,103,885,000	1,057,520,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance		4,781,000	147,000
Total ending loan balance, net of accrued interest receivable	[1]	$ 1,140,138,000	$ 1,072,786,000
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment		9.27%	14.35%
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment		1.40%	1.38%
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance as a percentage of loan balance		0.00%	0.00%
Total ending allowance for loan losses balance as a percentage of loan balance		1.62%	1.56%
Recorded investment		$ 31,485,000	$ 15,120,000
Recorded investment collectively evaluated for impairment		1,109,254,000	1,062,121,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		4,803,000	148,000
Recorded Investment	[1]	1,145,542,000	1,077,389,000
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for loan losses individually evaluated for impairment		30,000	86,000
Allowance for loan losses collectively evaluated for impairment		10,408,000	9,682,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		0	0
Total ending allowance balance		10,438,000	9,768,000
Loans individually evaluated for impairment		38,758,000	28,418,000
Loans collectively evaluated for impairment		1,550,422,000	1,251,579,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance		10,517,000	3,048,000
Total ending loan balance, net of accrued interest receivable	[1]	$ 1,599,697,000	$ 1,283,045,000
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment		0.08%	0.30%
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment		0.67%	0.77%
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance as a percentage of loan balance		0.00%	0.00%
Total ending allowance for loan losses balance as a percentage of loan balance		0.65%	0.76%
Recorded investment		$ 38,799,000	$ 28,426,000
Recorded investment collectively evaluated for impairment		1,556,070,000	1,256,310,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		10,595,000	3,059,000
Recorded Investment	[1]	1,605,464,000	1,287,795,000
Construction Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for loan losses individually evaluated for impairment		0	0
Allowance for loan losses collectively evaluated for impairment		5,432,000	4,463,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		0	0
Total ending allowance balance		5,432,000	4,463,000
Loans individually evaluated for impairment		1,869,000	1,866,000
Loans collectively evaluated for impairment		314,942,000	245,909,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance		1,358,000	499,000
Total ending loan balance, net of accrued interest receivable		$ 318,169,000	$ 248,274,000
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		1.72%	1.81%
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance as a percentage of loan balance		0.00%	0.00%
Total ending allowance for loan losses balance as a percentage of loan balance		1.71%	1.80%
Recorded investment		$ 1,868,000	$ 1,866,000
Recorded investment collectively evaluated for impairment		315,927,000	246,864,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		1,388,000	503,000
Recorded Investment		319,183,000	249,233,000
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for loan losses individually evaluated for impairment		111,000	18,000
Allowance for loan losses collectively evaluated for impairment		8,820,000	8,713,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		0	0
Total ending allowance balance		8,931,000	8,731,000
Loans individually evaluated for impairment		2,237,000	2,732,000
Loans collectively evaluated for impairment		1,878,615,000	1,790,637,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance		3,259,000	249,000
Total ending loan balance, net of accrued interest receivable		$ 1,884,111,000	$ 1,793,618,000
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment		4.96%	0.66%
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment		0.47%	0.49%
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance as a percentage of loan balance		0.00%	0.00%
Total ending allowance for loan losses balance as a percentage of loan balance		0.47%	0.49%
Recorded investment		$ 2,238,000	$ 2,732,000
Recorded investment collectively evaluated for impairment		1,882,543,000	1,794,207,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		3,277,000	251,000
Recorded Investment		1,888,058,000	1,797,190,000
Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for loan losses individually evaluated for impairment		0	0
Allowance for loan losses collectively evaluated for impairment		12,555,000	11,773,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		0	0
Total ending allowance balance		12,555,000	11,773,000
Loans individually evaluated for impairment		0	0
Loans collectively evaluated for impairment		1,430,397,000	1,292,136,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance		3,000	0
Total ending loan balance, net of accrued interest receivable		$ 1,430,400,000	$ 1,292,136,000
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		0.88%	0.91%
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance as a percentage of loan balance		0.00%	0.00%
Total ending allowance for loan losses balance as a percentage of loan balance		0.88%	0.91%
Recorded investment		$ 0	$ 0
Recorded investment collectively evaluated for impairment		1,434,343,000	1,295,892,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		3,000	0
Recorded Investment		1,434,346,000	1,295,892,000
Finance Leases Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for loan losses individually evaluated for impairment		25,000	0
Allowance for loan losses collectively evaluated for impairment		46,000	0
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		0	0
Total ending allowance balance		71,000	0
Loans individually evaluated for impairment		88,000	0
Loans collectively evaluated for impairment		30,476,000	2,273,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance		568,000	0
Total ending loan balance, net of accrued interest receivable		$ 31,132,000	$ 2,273,000
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment		28.41%	0.00%
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment		0.15%	0.00%
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance as a percentage of loan balance		0.00%	0.00%
Total ending allowance for loan losses balance as a percentage of loan balance		0.23%	0.00%
Recorded investment		$ 88,000	$ 0
Recorded investment collectively evaluated for impairment		30,506,000	2,299,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		568,000	0
Recorded Investment		31,162,000	2,299,000
Purchased credit impaired [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Gross		19,180,000	3,961,000
Purchased credit impaired [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Gross	[2]	10,595,000	3,059,000
Purchased credit impaired [Member] | Finance Leases Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Gross			0
Purchased credit impaired [Member] | Financial Asset Acquired with Credit Deterioration [Member] | Nonperforming Financial Instruments [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance for loan losses individually evaluated for impairment		0	0
Loans and Leases Receivable, Gross		11,000	475,000
Recorded Investment		$ 11,000	$ 475,000
[1]	Included within each of commercial, financial and agricultural loans and commercial real estate loans is an immaterial amount of consumer loans that are not broken out by class.
[2]	* Included within each of commercial, financial and agricultural loans and commercial real estate loans is an immaterial amount of consumer loans that are not broken out by class.

Mortgage Loans Held For Sale (D

Mortgage Loans Held For Sale (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gain (Loss) on Sale of Mortgage Loans	$ 294	$ 60
Mortgages Held-for-sale, Fair Value Disclosure	22,000	4,200
Real Estate Loan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Held-for-sale, Net, Not Part of Disposal Group	$ 21,700	$ 4,100

Goodwill and other intangible_2

Goodwill and other intangibles (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 157,999	$ 112,739	$ 157,999	$ 112,739	$ 112,739	$ 72,334
Other Intangible Assets, Net	15,490	7,260	15,490	7,260	6,971	0
Goodwill, Acquired During Period			45,260	40,405	40,405
Indefinite-lived Intangible Assets Acquired			10,251	7,549
Acquired goodwill and intangibles			55,511	47,954
Amortization of Intangible Assets	741	289	1,732	289
Finite-lived Intangible Assets Acquired	16,500		16,500		6,249
Indefinite-lived Intangible Assets Acquired	1,300		1,300		1,300
Finite-Lived Intangible Assets, Accumulated Amortization	2,310		2,310		578
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	741		741
Finite-Lived Intangible Assets, Amortization Expense, Year Two	2,502		2,502
Finite-Lived Intangible Assets, Amortization Expense, Year Three	2,040		2,040
Finite-Lived Intangible Assets, Amortization Expense, Year Four	1,725		1,725
Finite-Lived Intangible Assets, Amortization Expense, Year Five	1,548		1,548
Intangible Assets, Gross (Excluding Goodwill)	17,800		17,800		7,549
Intangible Assets, Net (Including Goodwill)	173,489	$ 119,999	173,489	$ 119,999	119,710	$ 72,334
Core Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	2,310		2,310		578
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	$ 0		$ 0		$ 0

Investment in Qualified Affor_3

Investment in Qualified Affordable Housing (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Equity Method Investments and Joint Ventures [Abstract]
Investment in qualified affordable housing tax credits amortization	$ 1,800	$ 1,900	$ 5,438	$ 5,553
Affordable housing tax credit investments	54,909		54,909		$ 50,347
Affordable Housing Program Obligation	28,439		28,439		$ 22,282
Affordable Housing Tax Credits and Other Tax Benefits, Amount	$ 2,600	$ 2,000	$ 6,900

Other Real Estate Owned (Detail

Other Real Estate Owned (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule of Assets Repossessed or Foreclosed, or loans in process of foreclosure [Line Items]
Other Repossessed Assets	$ 4,000	$ 4,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	3,779	4,303
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	2,385	2,359
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	380	1,108
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	1,014	836
Mortgage Loans in Process of Foreclosure, Amount	$ 2,499	$ 2,346

Loan Servicing (Narrative) (Det

Loan Servicing (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Transfers and Servicing of Financial Assets [Abstract]
Serviced sold mortgage loans	$ 1,410,000	$ 1,380,000	$ 1,410,000	$ 1,380,000	$ 1,390,000
Serviced sold mortgage loans with recourse	2,400	2,600	2,400	2,600	$ 2,500
Servicing fees included in other service income	900	$ 0	2,700	$ 0
Mortgage Loans Sold with Recourse, Reserve	$ 26		$ 26

Loan Servicing (Activity For MS

Loan Servicing (Activity For MSRs And Related Valuation Allowance) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Servicing Asset at Amortized Value, Balance [Roll Forward]
Carrying amount, net, beginning of period	$ 10,104,000	$ 10,077,000	$ 10,178,000	$ 9,688,000
Additions	722,000	432,000	1,462,000	1,208,000
Amortization	(534,000)	(387,000)	(1,259,000)	(1,156,000)
Changes in valuation inputs & assumptions	(332,000)	(26,000)	421,000	(356,000)
Carrying amount, net, end of period	9,960,000	10,096,000	9,960,000	10,096,000
Valuation Allowance for Impairment of Recognized Servicing Assets [Roll Forward]
Valuation allowance, beginning of period	321,000	248,000	232,000	630,000
Changes in valuation allowance	(332,000)	(26,000)	(421,000)	356,000
Valuation allowance, end of period	$ 653,000	$ 274,000	$ 653,000	$ 274,000

Leases - Narrative (Details)

Leases - Narrative (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Lease, Weighted Average Remaining Lease Term	7 years 4 months 24 days
Operating Lease, Liability	$ 15,191,000	$ 0
Deferred Rent Credit		600,000
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets			$ (995,000)
Operating Lease, Right-of-Use Asset	$ 14,412,000	0
Operating Lease, Weighted Average Discount Rate, Percent	3.10%
Other Assets [Member]
Operating Lease, Right-of-Use Asset	$ 14,400,000	11,000,000
Other Liabilities [Member]
Operating Lease, Liability	$ 15,191,000	11,800,000
Retained Earnings [Member]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets		(143,000)
Adjustments for Change in Accounting Principle [Domain] | Retained Earnings [Member]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets		$ 143,000

Leases - Cost and Other informa

Leases - Cost and Other information (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2019USD ($)
Lease, Cost [Abstract]
Operating Lease, Cost	$ 831	$ 2,320
Sublease Income	(97)	(285)
Lease, Cost	734	2,035
Operating Lease, Payments	$ 843	$ 2,336
Operating Lease, Weighted Average Remaining Lease Term	7 years 4 months 24 days	7 years 4 months 24 days
Operating Lease, Weighted Average Discount Rate, Percent	3.10%	3.10%
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 342	$ 381
reductions to right of use assets resulting from reduction in lease obligations	$ (726)	$ (2,021)

Leases - Operating Lease Liabil

Leases - Operating Lease Liabilities Payments Due (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 852
Lessee, Operating Lease, Liability, Payments, Due Year Two	2,868
Lessee, Operating Lease, Liability, Payments, Due Year Three	2,565
Lessee, Operating Lease, Liability, Payments, Due Year Four	2,406
Lessee, Operating Lease, Liability, Payments, Due Year Five	2,294
Lessee, Operating Lease, Liability, Payments, Due after Year Five	6,044
Lessee, Operating Lease, Liability, Payments, Due	17,029
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(1,838)
Operating Lease, Liability	15,191	$ 0
Other Liabilities [Member]
Lessee, Lease, Description [Line Items]
Operating Lease, Liability	$ 15,191	$ 11,800

Repurchase Agreement Borrowin_3

Repurchase Agreement Borrowings (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets and Associated Liabilities of Transfers Accounted for as Secured Borrowings [Line Items]
Transfers Accounted for as Secured Borrowings, Associated Liabilities, Carrying Amount	$ 160,838	$ 164,966
Pledged Assets Separately Reported, Securities Pledged for Repurchase Agreements, at Fair Value	188,000	272,000
Available unpledged securities	785,000	933,000
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	160,838	164,966
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	0	0
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	0	0
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	$ 0	$ 0

Derivatives Narrative (Details)

Derivatives Narrative (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Derivative [Line Items]
Derivative Assets	$ 422,000	$ 422,000		$ 87,000
Interest Income on Interest-rate Swap	16,000	7,000	$ 0
Borrowing Derivative [Member]
Derivative [Line Items]
Derivative, Notional Amount	25,000,000	25,000,000		0
Loan Derivative [Member]
Derivative [Line Items]
Derivative, Notional Amount	35,961,000	35,961,000		0
Interest Rate Lock Commitment [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 28,800,000	$ 28,800,000		$ 5,800,000

Derivatives Schedule of Derivat

Derivatives Schedule of Derivative Instruments (Details) - USD ($)	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Derivative [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	$ 704,000
Loan Derivative [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 35,961,000	$ 0
Derivative, Average Fixed Interest Rate	4.692%
Derivative, Average Variable Interest Rate	4.692%
Derivative, Average Remaining Maturity	10 years 4 months 24 days
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	$ 0
Borrowing Derivative [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 25,000,000	$ 0
Derivative, Average Fixed Interest Rate	2.595%
Derivative, Average Variable Interest Rate	2.303%
Derivative, Average Remaining Maturity	2 years 8 months 12 days
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	$ 704,000

Derivatives Schedule of Cash Fl

Derivatives Schedule of Cash Flow Hedges in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Derivative [Line Items]
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss)	$ (49)	$ (556)
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	0	0
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net	$ 0	$ 0

Derivatives Schedule of Cash _2

Derivatives Schedule of Cash Flow Hedge, Statements of Financial Performance and Position, Location (Details) - USD ($)	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Derivative [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	$ (704,000)
Borrowing Derivative [Member]
Derivative [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	(704,000)
Derivative, Notional Amount	25,000,000	$ 0
Loan Derivative [Member]
Derivative [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	0
Derivative, Notional Amount	35,961,000	$ 0
Other Assets [Member] | Borrowing Derivative [Member]
Derivative [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	0
Derivative, Notional Amount	0
Other Assets [Member] | Loan Derivative [Member]
Derivative [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	2,503,000
Derivative, Notional Amount	35,163,000
Other Assets [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	2,506,000
Derivative, Notional Amount	35,961,000
Other Liabilities [Member] | Borrowing Derivative [Member]
Derivative [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	(704,000)
Derivative, Notional Amount	25,000,000
Other Liabilities [Member] | Loan Derivative [Member]
Derivative [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	(3,000)
Derivative, Notional Amount	798,000
Other Liabilities [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	(3,210,000)
Derivative, Notional Amount	60,961,000
Individually Immaterial Counterparties [Member] | Other Assets [Member] | Loan Derivative [Member]
Derivative [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	3,000
Derivative, Notional Amount	798,000
Individually Immaterial Counterparties [Member] | Other Liabilities [Member] | Loan Derivative [Member]
Derivative [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	(2,503,000)
Derivative, Notional Amount	$ 35,163,000

Other Comprehensive Income (L_3

Other Comprehensive Income (Loss) (Component Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Transfers from Held-to-maturity to Available-for-Sale Securities, before Tax	$ 24,200
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number	176,007						176,007
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax	$ 186						$ 421	$ 2,600
Other comprehensive loss before reclassifications	13,840			$ (5,141)			36,841	(30,919)
Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax	0						0	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax	0						0	0
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets										$ (995)
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax	0			0			0	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	(49)			0			(556)	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	(147)			0			333	2,024
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax	(147)						333	2,024
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax	13,742			(5,141)			37,730	(28,895)
Other comprehensive income (loss)	13,693			(5,141)			37,174	(28,895)
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Reclassification Adjustments, after Tax	13,889			(5,141)			37,397	(30,919)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax	0			0			0	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax	(49)			0			(556)	0
Changes in pension plan assets and benefit obligations, Net-of-tax amount	(29,672)	$ 29,672		(26,701)	$ 26,701		(29,672)	(26,701)	$ 29,672	23,526
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax	(556)	(507)		0	0		(556)	0	0	0
Unrealized gains on available-for-sale securities, Net-of-tax amount	17,614	3,872		(33,449)	(28,308)		17,614	(33,449)	(20,116)	(2,928)
Total accumulated other comprehensive income (loss), Net-of-tax amount	(12,614)	(26,307)		(60,150)	(55,009)		$ (12,614)	$ (60,150)	$ (49,788)	(26,454)
Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, before Tax				0
Accumulated Other Comprehensive Income (loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets										(3,806)
Other comprehensive income (loss)	$ 13,693	$ 9,146	$ 14,335	$ (5,141)	$ (2,368)	$ (21,386)
Accumulated Other Comprehensive Income (loss) [Member] | Pension Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets										(3,175)
Accumulated Other Comprehensive Income (loss) [Member] | Debt Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets										(631)
Accounting Standards Update 2016-01 [Member] | Accumulated Other Comprehensive Income (loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets										(995)
Adjustments for New Accounting Pronouncement [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Changes in pension plan assets and benefit obligations, Net-of-tax amount										23,526
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax										0
Unrealized gains on available-for-sale securities, Net-of-tax amount										(3,923)
Total accumulated other comprehensive income (loss), Net-of-tax amount										$ (27,449)

Earnings Per Common Share (Narr

Earnings Per Common Share (Narrative) (Details) - shares	3 Months Ended						9 Months Ended		12 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Stock Issued During Period, Shares, Acquisitions	0	1,037,205	0	435,457	0	0	1,037,205		435,457
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	194,722						194,722		152,631
Treasury Stock, Shares, Acquired	84,603	250,000	86,650	0	50,000	0
Common Stock [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Treasury Stock, Shares, Acquired	84,603			0			421,253	50,000
Performance Shares [Member] | Common Stock [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period	0						58,740	48,053
Restricted Stock Units (RSUs) [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross							15,700

Earnings Per Common Share (Summ

Earnings Per Common Share (Summary Of Computation Of Basic And Diluted Earnings Per Common Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Income available to common shareholders	$ 31,146	$ 24,762	$ 78,764	$ 84,126
Denominator for basic earnings per share (weighted average common shares outstanding)	16,382,798	15,686,542	16,198,294	15,420,135
Effect of dilutive options and warrants	92,943	146,192	89,401	140,531
Denominator for diluted earnings per share (weighted average common shares outstanding adjusted for the effect of dilutive options and warrants)	16,475,741	15,832,734	16,287,695	15,560,666
Basic earnings per common share	$ 1.90	$ 1.58	$ 4.86	$ 5.46
Diluted earnings per common share	$ 1.89	$ 1.56	$ 4.84	$ 5.41

Segment Information (Schedule O

Segment Information (Schedule Of Operating Results By Segment) (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)segments	Sep. 30, 2018USD ($)	Dec. 31, 2018USD ($)
Segment Reporting Information [Line Items]
Number of Operating Segments | segments			2
Net interest income	$ 77,101,000	$ 67,676,000	$ 220,728,000	$ 197,268,000
Provision for (recovery of) loan losses	1,967,000	2,940,000	6,384,000	4,586,000
Other income and security gains	28,136,000	24,064,000	72,969,000	74,209,000
Total other expense	65,738,000	59,316,000	192,757,000	166,158,000
Income (loss) before income taxes	37,532,000	29,484,000	94,556,000	100,733,000
Income Tax Expense (Benefit)	6,386,000	4,722,000	15,792,000	16,607,000
Net Income	31,146,000	24,762,000	78,764,000	84,126,000
Assets	8,723,610,000	7,756,491,000	8,723,610,000	7,756,491,000	$ 7,804,308,000
PNB [Member]
Segment Reporting Information [Line Items]
Net interest income	76,180,000	66,195,000	217,355,000	190,319,000
Provision for (recovery of) loan losses	2,320,000	2,935,000	6,563,000	4,491,000
Other income and security gains	24,842,000	22,559,000	68,224,000	64,544,000
Total other expense	60,943,000	51,982,000	172,931,000	149,152,000
Income (loss) before income taxes	37,759,000	33,837,000	106,085,000	101,220,000
Income Tax Expense (Benefit)	6,811,000	5,981,000	19,063,000	17,822,000
Net Income	30,948,000	27,856,000	87,022,000	83,398,000
Assets	8,673,919,000	7,707,474,000	8,673,919,000	7,707,474,000
GFSC [Member]
Segment Reporting Information [Line Items]
Net interest income	1,244,000	1,252,000	3,786,000	3,818,000
Provision for (recovery of) loan losses	143,000	183,000	458,000	773,000
Other income and security gains	59,000	63,000	142,000	135,000
Total other expense	902,000	810,000	2,638,000	2,412,000
Income (loss) before income taxes	258,000	322,000	832,000	768,000
Income Tax Expense (Benefit)	55,000	68,000	179,000	162,000
Net Income	203,000	254,000	653,000	606,000
Assets	27,481,000	28,551,000	27,481,000	28,551,000
All Other [Member]
Segment Reporting Information [Line Items]
Net interest income	(323,000)	229,000	(413,000)	3,131,000
Provision for (recovery of) loan losses	(496,000)	(178,000)	(637,000)	(678,000)
Other income and security gains	3,235,000	1,442,000	4,603,000	9,530,000
Total other expense	3,893,000	6,524,000	17,188,000	14,594,000
Income (loss) before income taxes	(485,000)	(4,675,000)	(12,361,000)	(1,255,000)
Income Tax Expense (Benefit)	(480,000)	(1,327,000)	(3,450,000)	(1,377,000)
Net Income	(5,000)	(3,348,000)	(8,911,000)	122,000
Assets	$ 22,210,000	$ 20,466,000	$ 22,210,000	$ 20,466,000

Share Based Compensation (Detai

Share Based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 8,923		$ 8,923
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	194,722		194,722		152,631
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period			(27,719)	(18,800)
Share-based Payment Arrangement, Shares Withheld for Tax Withholding Obligation			8,736	5,879
Restricted Stock, Shares Issued Net of Shares for Tax Withholdings			18,983	12,921
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period			(1,262)
Share-based Payment Arrangement, Expense	$ 1,200	$ 1,000	$ 3,800	$ 3,100
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Period Increase (Decrease)			(3,368)
Expense to be paid next twelve months [Domain]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	1,287		$ 1,287
Expense to be paid Year Two [Domain]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	4,047		4,047
Expense to be paid Year Three [Domain]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	2,388		2,388
Expense to be paid Year Four [Domain]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	1,038		1,038
Expense to be paid Year Five [Domain]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 163		$ 163
2017 Employees 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	750,000		750,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	616,083		616,083
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			74,440
2017 Non Employee Directors LTIP [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	150,000		150,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	127,200		127,200
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, Equity Instruments Other than Options, Nonvested, Number	60,805		60,805
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	600,000		600,000
Performance Shares [Member] | 2017 Employees 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, Options, Grants in Period, Gross	0		58,740
Performance Shares [Member] | 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, Options, Grants in Period, Gross				48,053
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			15,700
Restricted Stock Units (RSUs) [Member] | 2017 Employees 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, Options, Grants in Period, Gross			15,700		13,637

Benefit Plan (Components Of Net

Benefit Plan (Components Of Net Periodic Benefit Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1,468	$ 1,637	$ 4,404	$ 4,911
Interest cost	1,373	1,309	4,119	3,927
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	285	(68)	855	(204)
Pension plan contributions			0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	1,468	1,637	4,404	4,911
Interest cost	1,373	1,309	4,119	3,927
Expected return on plan assets	(3,026)	(3,354)	(9,078)	(10,062)
Recognized net actuarial loss	470	340	1,410	1,020
Benefit expense	285	(68)	855	(204)
Supplemental Employee Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	202	157	604	635
Interest cost	165	188	495	349
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	367	345	1,099	984
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	202	157	604	635
Interest cost	165	188	495	349
Benefit expense	$ 367	$ 345	$ 1,099	$ 984

Fair Value (Narrative) (Details

Fair Value (Narrative) (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Dec. 31, 2018USD ($)	Jun. 30, 2019USD ($)	Jun. 30, 2018USD ($)	Dec. 31, 2017USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Receivable, Fair Value Disclosure	$ 6,351,381,000		$ 6,351,381,000		$ 5,580,780,000
expense related to other repossessed assets			0	$ 300,000
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets								$ (995,000)
Alternative Investment	15,989,000		15,989,000		17,065,000
Loans Held-for-sale, Fair Value Disclosure	21,986,000		21,986,000		4,158,000
Impaired Financing Receivable, Carrying Value	71,395,000		$ 71,395,000		45,871,000
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			$ 5,633,000		11,246,000
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	3,083,000		3,083,000		2,273,000
Impaired Financing Receivable, Related Allowance	3,083,000		3,083,000		2,273,000
Impaired Loan Fair Value	3,679,000		3,679,000		6,399,000
Partial Charge-Offs On Impaired Loans carried at Fair Value			3,126,000		3,630,000
Book Value Of Impaired Loans Carried At Fair Value	3,820,000		3,820,000		6,503,000
Impaired Financing Receivable, carried at fair value, related expense	100,000		200,000	300,000
MSR recorded at lower of cost or fair value	9,960,000	$ 10,096,000	9,960,000	10,096,000	10,178,000	$ 10,104,000	$ 10,077,000	9,688,000
Mortgage Servicing Rights Fair Value	7,500,000		7,500,000		1,200,000
Valuation allowance of MSR	653,000	274,000	653,000	274,000	232,000	$ 321,000	$ 248,000	630,000
MSRs recorded at cost	2,500,000		2,500,000		9,000,000
Changes due to fair value adjustments	(332,000)	(26,000)	(421,000)	356,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	$ 3,779,000		$ 3,779,000		$ 4,303,000
Percent of OREO held at fair value	84.00%		84.00%		85.00%
Other Real Estate, Foreclosed Assets, and Repossessed Assets, Fair Value	$ 3,200,000		$ 3,200,000		$ 3,700,000
OREO valuation adjustments	41,000	77,000	123,000	398,000
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	3,600,000		3,600,000		6,100,000
Alternative Investment, income recognized	3,300,000	$ 415,000	5,100,000	$ 1,200,000
Commercial Receivables, excluding Commercial, Financial, and Agricultural [Domain]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Financing Receivable, Related Allowance	141,000		141,000		104,000
Financing Receivable, not collateral dependent [Domain]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Financing Receivable, Related Allowance	2,942,000		2,942,000		2,169,000
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	30,000		30,000		86,000
Construction Real Estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	0		0		0
Other Real Estate, Foreclosed Assets, and Repossessed Assets	380,000		380,000		1,108,000
Residential Real Estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Real Estate, Foreclosed Assets, and Repossessed Assets	1,014,000		1,014,000		836,000
Retained Earnings [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets					(143,000)
Accounting Standards Update 2016-01 [Member] | Retained Earnings [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets								$ 1,917,000
Fair Value Measured at Net Asset Value Per Share [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Alternative Investment	12,400,000		12,400,000		11,000,000
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Receivable, Fair Value Disclosure	6,328,973,000		6,328,973,000		5,576,535,000
Impaired Loan Fair Value	$ 3,679,000		$ 3,679,000		$ 6,399,000
Measurement Input, Comparability Adjustment [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Maximum [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans Receivable, Measurement Input	0.896		0.896		1.075
Measurement Input, Comparability Adjustment [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Maximum [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Real Estate Owned, Measurement Input	0.684		0.684		0.684
Measurement Input, Comparability Adjustment [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Maximum [Member] | Construction Real Estate [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans Receivable, Measurement Input	0.724		0.724		0.900
Measurement Input, Comparability Adjustment [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Maximum [Member] | Construction Real Estate [Member] | Real Estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Real Estate Owned, Measurement Input					0.450
Measurement Input, Comparability Adjustment [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Maximum [Member] | Residential Real Estate [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans Receivable, Measurement Input	0.535		0.535		0.400
Measurement Input, Comparability Adjustment [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Maximum [Member] | Residential Real Estate [Member] | Real Estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Real Estate Owned, Measurement Input	0.546		0.546		0.546
Measurement Input, Comparability Adjustment [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Weighted Average [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans Receivable, Measurement Input	0.281		0.281		0.311
Measurement Input, Comparability Adjustment [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Weighted Average [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Real Estate Owned, Measurement Input	0.311		0.311		0.347
Measurement Input, Comparability Adjustment [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Weighted Average [Member] | Construction Real Estate [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans Receivable, Measurement Input	0.385		0.385		0.261
Measurement Input, Comparability Adjustment [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Weighted Average [Member] | Construction Real Estate [Member] | Real Estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Real Estate Owned, Measurement Input					0.217
Measurement Input, Comparability Adjustment [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Weighted Average [Member] | Residential Real Estate [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans Receivable, Measurement Input	0.138		0.138		0.132
Measurement Input, Comparability Adjustment [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Weighted Average [Member] | Residential Real Estate [Member] | Real Estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Real Estate Owned, Measurement Input	0.346		0.346		0.425
Measurement Input, Comparability Adjustment [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Minimum [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans Receivable, Measurement Input	0		0		0
Measurement Input, Comparability Adjustment [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Minimum [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Real Estate Owned, Measurement Input	0.009		0.009		0.009
Measurement Input, Comparability Adjustment [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Minimum [Member] | Construction Real Estate [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans Receivable, Measurement Input	0.001		0.001		0.050
Measurement Input, Comparability Adjustment [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Minimum [Member] | Construction Real Estate [Member] | Real Estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Real Estate Owned, Measurement Input					0
Measurement Input, Comparability Adjustment [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Minimum [Member] | Residential Real Estate [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans Receivable, Measurement Input	0		0		0
Measurement Input, Comparability Adjustment [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Market Approach [Member] | Minimum [Member] | Residential Real Estate [Member] | Real Estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Real Estate Owned, Measurement Input	0.019		0.019		0.304
Measurement Input, Cap Rate [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Income Approach [Member] | Maximum [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans Receivable, Measurement Input	0.106		0.106		0.108
Measurement Input, Cap Rate [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Income Approach [Member] | Maximum [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Real Estate Owned, Measurement Input	0.130		0.130		0.130
Measurement Input, Cap Rate [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Income Approach [Member] | Maximum [Member] | Residential Real Estate [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans Receivable, Measurement Input					0.105
Measurement Input, Cap Rate [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Income Approach [Member] | Weighted Average [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans Receivable, Measurement Input	0.106		0.106		0.106
Measurement Input, Cap Rate [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Income Approach [Member] | Weighted Average [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Real Estate Owned, Measurement Input	0.128		0.128		0.130
Measurement Input, Cap Rate [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Income Approach [Member] | Weighted Average [Member] | Residential Real Estate [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans Receivable, Measurement Input					0.105
Measurement Input, Cap Rate [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Income Approach [Member] | Minimum [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans Receivable, Measurement Input	0.106		0.106		0.095
Measurement Input, Cap Rate [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Income Approach [Member] | Minimum [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other Real Estate Owned, Measurement Input	0.100		0.100		0.130
Measurement Input, Cap Rate [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Income Approach [Member] | Minimum [Member] | Residential Real Estate [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans Receivable, Measurement Input					0.105
Measurement input replacement cost [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Cost Approach [Member] | Maximum [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans Receivable, Measurement Input	0.931		0.931		0.901
Measurement input replacement cost [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Cost Approach [Member] | Weighted Average [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans Receivable, Measurement Input	0.724		0.724		0.110
Measurement input replacement cost [Member] | Fair Value, Inputs, Level 3 [Member] | Valuation, Cost Approach [Member] | Minimum [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loans Receivable, Measurement Input	0.600		0.600		0.042
Fair Value, Nonrecurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Receivable, Fair Value Disclosure	$ 3,679,000		$ 3,679,000		$ 6,399,000
Fair Value, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Receivable, Fair Value Disclosure	1,862,000		1,862,000		4,059,000
Fair Value, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loan Fair Value					4,059,000
Fair Value, Nonrecurring [Member] | Residential Real Estate [Member] | Loans Receivable [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loan Fair Value					705,000
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Receivable, Fair Value Disclosure	3,679,000		3,679,000		6,399,000
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member] | Commercial Real Estate Portfolio Segment [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans Receivable, Fair Value Disclosure	$ 1,862,000		$ 1,862,000		$ 4,059,000

Fair Value (Assets And Liabilit

Fair Value (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) - USD ($)	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	$ 321,905,000
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	321,905,000
U S Government Sponsored Entities Asset Backed Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	938,381,000	$ 1,003,421,000
U S Government Sponsored Entities Asset Backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	938,381,000	1,003,421,000
Loans Receivable [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Swap	2,506,000
Loans Receivable [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage IRLCs	0
Loans Receivable [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage IRLCs	2,506,000
Swap	2,506,000
Loans Receivable [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage IRLCs	0
Loans Receivable [Member] | Fair Value, Recurring [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage IRLCs	2,506,000
Swap	2,506,000
Loans Receivable [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage IRLCs	2,506,000
Swap	2,506,000
Equity Securities [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities	1,889,000	1,649,000
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities	1,451,000	1,225,000
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities	438,000	424,000
Equity Securities [Member] | Fair Value, Recurring [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	1,889,000	1,649,000
Equity Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	1,451,000	1,225,000
Equity Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	438,000	424,000
Swap [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Swap	226,000	226,000
Swap [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	704,000
Swap [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Swap	226,000	226,000
Swap [Member] | Fair Value, Recurring [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Swap	226,000	226,000
Swap [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Swap	226,000	226,000
Cash and Cash Equivalents, Fair Value Disclosure	372,726,000	167,214,000
Mortgage loans held for sale	22,000,000	4,200,000
Mortgage IRLCs	422,000	87,000
Investment securities	1,260,286,000	1,354,843,000
Loans Held-for-sale, Fair Value Disclosure	21,986,000	4,158,000
Impaired Loan Fair Value	3,679,000	6,399,000
Other Assets, Fair Value Disclosure	6,325,294,000	5,570,136,000
Loans Receivable, Fair Value Disclosure	6,351,381,000	5,580,780,000
Time deposits	1,133,648,000	1,044,620,000
Other Liabilities, Fair Value Disclosure	5,271,000	1,267,000
Deposits, Fair Value Disclosure	1,138,919,000	1,045,887,000
Short Term Borrowings Fair Value	185,838,000	221,966,000
Long-term debt	307,047,000	400,203,000
Subordinated Debt Obligations, Fair Value Disclosure	13,810,000	12,959,000
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	704,000
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	372,726,000	167,214,000
Mortgage IRLCs	0	0
Other Liabilities, Fair Value Disclosure	5,271,000	1,267,000
Deposits, Fair Value Disclosure	5,271,000	1,267,000
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage IRLCs	422,000	87,000
Investment securities	1,260,286,000	1,354,843,000
Loans Held-for-sale, Fair Value Disclosure	21,986,000	4,158,000
Loans Receivable, Fair Value Disclosure	22,408,000	4,245,000
Time deposits	1,133,648,000	1,044,620,000
Deposits, Fair Value Disclosure	1,133,648,000	1,044,620,000
Short Term Borrowings Fair Value	185,838,000	221,966,000
Long-term debt	307,047,000	400,203,000
Subordinated Debt Obligations, Fair Value Disclosure	13,810,000	12,959,000
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage IRLCs	0	0
Impaired Loan Fair Value	3,679,000	6,399,000
Other Assets, Fair Value Disclosure	6,325,294,000	5,570,136,000
Loans Receivable, Fair Value Disclosure	6,328,973,000	5,576,535,000
Fair Value, Recurring [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage loans held for sale	21,986,000	4,158,000
Mortgage IRLCs	422,000	87,000
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage loans held for sale	21,986,000	4,158,000
Mortgage IRLCs	422,000	87,000
Reported Value Measurement [Member] | Loans Receivable [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage IRLCs	2,506,000
Swap	2,506,000
Reported Value Measurement [Member] | Equity Securities [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities	1,889,000	1,649,000
Reported Value Measurement [Member] | Swap [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Swap	226,000	226,000
Reported Value Measurement [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	372,726,000	167,214,000
Mortgage IRLCs	422,000	87,000
Investment securities	1,260,286,000	1,355,229,000
Loans Held-for-sale, Fair Value Disclosure	21,986,000	4,158,000
Impaired Loan Fair Value	3,678,000	6,399,000
Other Assets, Fair Value Disclosure	6,321,708,000	5,629,976,000
Loans Receivable, Fair Value Disclosure	6,347,794,000	5,640,620,000
Time deposits	1,127,366,000	1,043,177,000
Other Liabilities, Fair Value Disclosure	5,271,000	1,267,000
Deposits, Fair Value Disclosure	1,132,637,000	1,044,444,000
Short Term Borrowings Fair Value	185,838,000	221,966,000
Long-term debt	297,500,000	400,000,000
Subordinated Debt Obligations, Fair Value Disclosure	$ 15,000,000	$ 15,000,000

Fair Value (Reconciliation Of L

Fair Value (Reconciliation Of Level 3 Input For Financial Instruments Measured On Recurring Basis) (Details) - Fair Value, Recurring [Member] - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2017
U S Government Sponsored Entities Asset Backed Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments, Fair Value Disclosure		$ 938,381			$ 1,003,421
Equity Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments, Fair Value Disclosure		1,889			1,649
Fair Value, Inputs, Level 2 [Member] | U S Government Sponsored Entities Asset Backed Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments, Fair Value Disclosure		938,381			1,003,421
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments, Fair Value Disclosure		438			424
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	$ 424	438	$ 424	$ 433	424	$ 420	$ 417
Included in other comprehensive income		14	7
Balance, ending	424	438	424	433	424	420	417
Fair Value, Inputs, Level 3 [Member] | Swap [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	(226)	(226)	(226)	(226)	(226)	(226)	(226)
Included in other comprehensive income	0	0	0
Balance, ending	$ (226)	$ (226)	$ (226)	$ (226)	$ (226)	$ (226)	$ (226)

Fair Value (Fair Value Of Finan

Fair Value (Fair Value Of Financial Instruments) (Details) - USD ($)	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and money market instruments	$ 372,726,000	$ 167,214,000
Investment securities	1,260,286,000	1,354,843,000
Federal Home Loan Bank Stock	33,424,000	43,388,000
Federal Reserve Bank Stock	14,653,000	8,225,000
Loans Held-for-sale, Fair Value Disclosure	21,986,000	4,158,000
Derivative Assets	422,000	87,000
Impaired Loan Fair Value	3,679,000	6,399,000
Other loans	6,325,294,000	5,570,136,000
Loans receivable, net	6,351,381,000	5,580,780,000
Time deposits	1,133,648,000	1,044,620,000
Other	5,271,000	1,267,000
Total deposits	1,138,919,000	1,045,887,000
Short-term borrowings	185,838,000	221,966,000
Long-term debt	307,047,000	400,203,000
Subordinated debentures/notes	13,810,000	12,959,000
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	704,000
Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	2,506,000
Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	1,889,000	1,649,000
Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	226,000	226,000
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and money market instruments	372,726,000	167,214,000
Investment securities	1,260,286,000	1,355,229,000
Loans Held-for-sale, Fair Value Disclosure	21,986,000	4,158,000
Derivative Assets	422,000	87,000
Impaired Loan Fair Value	3,678,000	6,399,000
Other loans	6,321,708,000	5,629,976,000
Loans receivable, net	6,347,794,000	5,640,620,000
Time deposits	1,127,366,000	1,043,177,000
Other	5,271,000	1,267,000
Total deposits	1,132,637,000	1,044,444,000
Short-term borrowings	185,838,000	221,966,000
Long-term debt	297,500,000	400,000,000
Subordinated debentures/notes	15,000,000	15,000,000
Reported Value Measurement [Member] | Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Assets	2,506,000
Swap	2,506,000
Reported Value Measurement [Member] | Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	1,889,000	1,649,000
Reported Value Measurement [Member] | Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	226,000	226,000
Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Assets	422,000	87,000
Impaired Loan Fair Value		6,399,000
Estimate of Fair Value Measurement [Member] | Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Assets	2,506,000
Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and money market instruments	372,726,000	167,214,000
Derivative Assets	0	0
Other	5,271,000	1,267,000
Total deposits	5,271,000	1,267,000
Fair Value, Inputs, Level 1 [Member] | Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Assets	0
Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	1,451,000	1,225,000
Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	1,260,286,000	1,354,843,000
Loans Held-for-sale, Fair Value Disclosure	21,986,000	4,158,000
Derivative Assets	422,000	87,000
Loans receivable, net	22,408,000	4,245,000
Time deposits	1,133,648,000	1,044,620,000
Total deposits	1,133,648,000	1,044,620,000
Short-term borrowings	185,838,000	221,966,000
Long-term debt	307,047,000	400,203,000
Subordinated debentures/notes	13,810,000	12,959,000
Fair Value, Inputs, Level 2 [Member] | Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Assets	2,506,000
Swap	2,506,000
Fair Value, Inputs, Level 2 [Member] | Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	704,000
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Assets	0	0
Impaired Loan Fair Value	3,679,000	6,399,000
Other loans	6,325,294,000	5,570,136,000
Loans receivable, net	6,328,973,000	5,576,535,000
Fair Value, Inputs, Level 3 [Member] | Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Assets	0
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	438,000	424,000
Fair Value, Inputs, Level 3 [Member] | Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	$ 226,000	$ 226,000

Fair Value Qualitative informat

Fair Value Qualitative information about Level 3 fair value measurements (Details) $ in Thousands	Sep. 30, 2019USD ($)	Dec. 31, 2018USD ($)
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loan Fair Value	$ 3,679	$ 6,399
Other Assets, Fair Value Disclosure	6,325,294	5,570,136
Loans Held-for-sale, Fair Value Disclosure	21,986	4,158
Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loan Fair Value	3,679	6,399
Other Assets, Fair Value Disclosure	6,325,294	5,570,136
Fair Value, Nonrecurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Assets, Fair Value Disclosure	3,164	3,674
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Assets, Fair Value Disclosure	3,164	3,674
Fair Value, Nonrecurring [Member] | Construction Real Estate [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Assets, Fair Value Disclosure		729
Fair Value, Nonrecurring [Member] | Construction Real Estate [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Assets, Fair Value Disclosure		729
Fair Value, Nonrecurring [Member] | Construction Real Estate [Member] | Real Estate [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Assets, Fair Value Disclosure		729
Fair Value, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loan Fair Value		4,059
Fair Value, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Assets, Fair Value Disclosure	2,385	2,295
Fair Value, Nonrecurring [Member] | Construction Real Estate Remaining Commercial [Member] | Loans Receivable [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loan Fair Value		1,635
Fair Value, Nonrecurring [Member] | Residential Real Estate [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Assets, Fair Value Disclosure	779	650
Fair Value, Nonrecurring [Member] | Residential Real Estate [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Assets, Fair Value Disclosure	779	650
Fair Value, Nonrecurring [Member] | Residential Real Estate [Member] | Loans Receivable [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loan Fair Value		705
Fair Value, Nonrecurring [Member] | Residential Real Estate [Member] | Real Estate [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Assets, Fair Value Disclosure	779	650
Fair Value [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loan Fair Value		$ 6,399
Fair Value [Member] | Fair Value, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loan Fair Value	1,861
Fair Value [Member] | Fair Value, Nonrecurring [Member] | Residential Real Estate [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loan Fair Value	182
Fair Value [Member] | Construction Real Estate Remaining Commercial [Member] | Fair Value, Nonrecurring [Member] | Construction Real Estate [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loan Fair Value	$ 1,635
Measurement Input, Comparability Adjustment [Member] | Construction Real Estate [Member] | Loans Receivable [Member] | Minimum [Member] | Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans Receivable, Measurement Input	0.001	0.050
Measurement Input, Comparability Adjustment [Member] | Construction Real Estate [Member] | Loans Receivable [Member] | Maximum [Member] | Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans Receivable, Measurement Input	0.724	0.900
Measurement Input, Comparability Adjustment [Member] | Construction Real Estate [Member] | Loans Receivable [Member] | Weighted Average [Member] | Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans Receivable, Measurement Input	0.385	0.261
Measurement Input, Comparability Adjustment [Member] | Construction Real Estate [Member] | Real Estate [Member] | Minimum [Member] | Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Real Estate Owned, Measurement Input		0
Measurement Input, Comparability Adjustment [Member] | Construction Real Estate [Member] | Real Estate [Member] | Maximum [Member] | Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Real Estate Owned, Measurement Input		0.450
Measurement Input, Comparability Adjustment [Member] | Construction Real Estate [Member] | Real Estate [Member] | Weighted Average [Member] | Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Real Estate Owned, Measurement Input		0.217
Measurement Input, Comparability Adjustment [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Minimum [Member] | Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans Receivable, Measurement Input	0	0
Measurement Input, Comparability Adjustment [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Maximum [Member] | Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans Receivable, Measurement Input	0.896	1.075
Measurement Input, Comparability Adjustment [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Weighted Average [Member] | Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans Receivable, Measurement Input	0.281	0.311
Measurement Input, Comparability Adjustment [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member] | Minimum [Member] | Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Real Estate Owned, Measurement Input	0.009	0.009
Measurement Input, Comparability Adjustment [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member] | Maximum [Member] | Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Real Estate Owned, Measurement Input	0.684	0.684
Measurement Input, Comparability Adjustment [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member] | Weighted Average [Member] | Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Real Estate Owned, Measurement Input	0.311	0.347
Measurement Input, Comparability Adjustment [Member] | Residential Real Estate [Member] | Loans Receivable [Member] | Minimum [Member] | Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans Receivable, Measurement Input	0	0
Measurement Input, Comparability Adjustment [Member] | Residential Real Estate [Member] | Loans Receivable [Member] | Maximum [Member] | Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans Receivable, Measurement Input	0.535	0.400
Measurement Input, Comparability Adjustment [Member] | Residential Real Estate [Member] | Loans Receivable [Member] | Weighted Average [Member] | Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans Receivable, Measurement Input	0.138	0.132
Measurement Input, Comparability Adjustment [Member] | Residential Real Estate [Member] | Real Estate [Member] | Minimum [Member] | Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Real Estate Owned, Measurement Input	0.019	0.304
Measurement Input, Comparability Adjustment [Member] | Residential Real Estate [Member] | Real Estate [Member] | Maximum [Member] | Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Real Estate Owned, Measurement Input	0.546	0.546
Measurement Input, Comparability Adjustment [Member] | Residential Real Estate [Member] | Real Estate [Member] | Weighted Average [Member] | Valuation, Market Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Real Estate Owned, Measurement Input	0.346	0.425
Measurement Input, Cap Rate [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Minimum [Member] | Valuation, Income Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans Receivable, Measurement Input	0.106	0.095
Measurement Input, Cap Rate [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Maximum [Member] | Valuation, Income Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans Receivable, Measurement Input	0.106	0.108
Measurement Input, Cap Rate [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Weighted Average [Member] | Valuation, Income Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans Receivable, Measurement Input	0.106	0.106
Measurement Input, Cap Rate [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member] | Minimum [Member] | Valuation, Income Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Real Estate Owned, Measurement Input	0.100	0.130
Measurement Input, Cap Rate [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member] | Maximum [Member] | Valuation, Income Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Real Estate Owned, Measurement Input	0.130	0.130
Measurement Input, Cap Rate [Member] | Commercial Real Estate Portfolio Segment [Member] | Real Estate [Member] | Weighted Average [Member] | Valuation, Income Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Real Estate Owned, Measurement Input	0.128	0.130
Measurement Input, Cap Rate [Member] | Residential Real Estate [Member] | Loans Receivable [Member] | Minimum [Member] | Valuation, Income Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans Receivable, Measurement Input		0.105
Measurement Input, Cap Rate [Member] | Residential Real Estate [Member] | Loans Receivable [Member] | Maximum [Member] | Valuation, Income Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans Receivable, Measurement Input		0.105
Measurement Input, Cap Rate [Member] | Residential Real Estate [Member] | Loans Receivable [Member] | Weighted Average [Member] | Valuation, Income Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans Receivable, Measurement Input		0.105
Measurement input replacement cost [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Minimum [Member] | Valuation, Cost Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans Receivable, Measurement Input	0.600	0.042
Measurement input replacement cost [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Maximum [Member] | Valuation, Cost Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans Receivable, Measurement Input	0.931	0.901
Measurement input replacement cost [Member] | Commercial Real Estate Portfolio Segment [Member] | Loans Receivable [Member] | Weighted Average [Member] | Valuation, Cost Approach [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Impaired Loans Receivable, Measurement Input	0.724	0.110

Fair Value Fair Value (Assets a

Fair Value Fair Value (Assets and liabilities measured at fair value on a nonrecurring basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	$ 21,986	$ 4,158
Loans Receivable, Fair Value Disclosure	6,351,381	5,580,780
Other Assets, Fair Value Disclosure	6,325,294	5,570,136
Other Repossessed Assets	4,000	4,000
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	21,986	4,158
Loans Receivable, Fair Value Disclosure	22,408	4,245
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	6,328,973	5,576,535
Other Assets, Fair Value Disclosure	6,325,294	5,570,136
Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	3,679	6,399
Servicing Asset at Fair Value, Amount	7,462	1,169
Other Assets, Fair Value Disclosure	3,164	3,674
Other Repossessed Assets	3,598	3,464
Fair Value, 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	7,462	1,169
Fair Value, 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	3,679	6,399
Other Assets, Fair Value Disclosure	3,164	3,674
Other Repossessed Assets	3,598	3,464
Commercial Real Estate Portfolio Segment [Member] | Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	1,862	4,059
Commercial Real Estate Portfolio Segment [Member] | Fair Value, 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	1,862	4,059
Residential Real Estate [Member] | Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Assets, Fair Value Disclosure	779	650
Residential Real Estate [Member] | Fair Value, 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	779	650
Construction Real Estate [Member] | Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Assets, Fair Value Disclosure		729
Construction Real Estate [Member] | Fair Value, 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		729
Commercial Real Estate [Member] | Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Assets, Fair Value Disclosure	2,385	2,295
Commercial Real Estate [Member] | Fair Value, 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	2,385	2,295
Residential Real Estate [Member] | Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	182	705
Residential Real Estate [Member] | Fair Value, 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	182	705
Construction Real Estate Remaining Commercial [Member] | Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	1,635	1,635
Construction Real Estate Remaining Commercial [Member] | Fair Value, 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	1,635	1,635
Reported Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	21,986	4,158
Loans Receivable, Fair Value Disclosure	6,347,794	5,640,620
Other Assets, Fair Value Disclosure	$ 6,321,708	$ 5,629,976

Fair Value Fair Value (Impaired

Fair Value Fair Value (Impaired Financing Receivables Additional Information) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018
Schedule of Impaired Financing Receivables Additional Information [Line Items]
Book Value Of Impaired Loans Carried At Fair Value	$ 3,820	$ 6,503
Partial Charge-Offs On Impaired Loans carried at Fair Value	3,126	3,630
Impaired Financing Receivable, Related Allowance	3,083	2,273
impaired Financing Receivable, loans not held at Fair Value, Carrying Amount	67,716	39,472
Impaired Financing Receivable, Recorded Investment	74,478	48,144	$ 46,760
Impaired Loan Fair Value	3,679	6,399
Impaired Financing Receivable, loans not held at Fair Value, Recorded Investment	70,658	41,641
Partial Charge-offs on Impaired Loans carried at Cost	2,507	7,616
Impaired Financing Receivable, Carrying Value	71,395	45,871
Partial Charge-Offs On Impaired Loans	5,633	11,246
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	3,083	2,273
Financing Receivable, not collateral dependent [Domain]
Schedule of Impaired Financing Receivables Additional Information [Line Items]
Impaired Financing Receivable, Related Allowance	2,942	2,169
Commercial Receivables, excluding Commercial, Financial, and Agricultural [Domain]
Schedule of Impaired Financing Receivables Additional Information [Line Items]
Impaired Financing Receivable, Related Allowance	$ 141	$ 104

Revenue from Contracts with C_3

Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Personal trust and agency accounts	$ 2,151	$ 1,994	$ 6,757	$ 6,383
Employee benefit and retirement-related accounts	1,753	1,703	5,185	5,003
Investment management and investment advisory agency accounts	2,547	2,353	7,421	6,936
Other	391	368	1,137	1,157
Non-sufficient funds (NSF) fees	1,911	1,926	5,241	5,608
Demand deposit account (DDA) charges	784	764	2,336	2,503
Other	169	171	501	498
Credit card	587	598	1,790	1,672
HELOC	72	128	286	345
Installment	(26)	66	120	203
Real estate	3,225	2,145	7,880	6,748
Commercial	402	309	1,042	1,922
Debit card fee income	5,313	4,352	14,909	12,736
Bank owned life insurance income	1,107	2,585	3,399	4,625
ATM Fees	482	500	1,382	1,534
OREO valuation adjustments	(41)	(77)	(123)	(398)
Gain on sale of OREO, net	(53)	(81)	(224)	4,093
Other components of net periodic benefit income	1,183	1,705	3,549	5,115
Other	2,658	2,466	5,493	5,164
Total other income	28,136	24,064	72,969	74,209
Net loss on sale of investment securities (2)	186		(421)	(2,271)
Gain on equity securities, net	3,335	89	5,309	4,633
Bank Servicing [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	4,260	3,246	11,118	10,890
Within Scope [Domain]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	1,300	1,100	4,000	4,400
Out of Scope [Domain]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	3,000	2,100	7,100	6,500
PNB [Member]
Disaggregation of Revenue [Line Items]
Personal trust and agency accounts	2,151	1,994	6,757	6,383
Employee benefit and retirement-related accounts	1,753	1,703	5,185	5,003
Investment management and investment advisory agency accounts	2,547	2,353	7,421	6,936
Other	391	368	1,137	1,157
Non-sufficient funds (NSF) fees	1,911	1,926	5,241	5,608
Demand deposit account (DDA) charges	784	764	2,336	2,503
Other	169	171	501	498
Credit card	586	592	1,785	1,652
HELOC	71	128	282	345
Installment	62	60	203	197
Real estate	3,226	2,145	7,890	6,748
Commercial	262	291	901	847
Debit card fee income	5,313	4,352	14,909	12,736
Bank owned life insurance income	1,021	960	3,116	2,822
ATM Fees	482	500	1,382	1,534
OREO valuation adjustments	41	78	123	179
Gain on sale of OREO, net	(53)	36	(84)	1,442
Other components of net periodic benefit income	1,147	1,653	3,440	4,957
Other	2,634	2,413	5,394	5,106
Total other income	24,842	22,559	68,224	64,544
Net loss on sale of investment securities (2)	186		(421)	(2,271)
Gain on equity securities, net		228	972	520
GFSC [Member]
Disaggregation of Revenue [Line Items]
Personal trust and agency accounts	0	0	0	0
Employee benefit and retirement-related accounts	0	0	0	0
Investment management and investment advisory agency accounts	0	0	0	0
Other	0	0	0	0
Non-sufficient funds (NSF) fees	0	0	0	0
Demand deposit account (DDA) charges	0	0	0	0
Other	0	0	0	0
Credit card	1	6	5	20
HELOC	0	0	0	0
Installment	0	0	0	0
Real estate	0	0	0	0
Commercial	0	0	0	0
Debit card fee income	0	0	0	0
Bank owned life insurance income	0	0	0	0
ATM Fees	0	0	0	0
OREO valuation adjustments	0	0	0	0
Gain on sale of OREO, net	0	0	0	0
Other components of net periodic benefit income	13	18	40	56
Other	45	39	97	59
Total other income	59	63	142	135
Net loss on sale of investment securities (2)	0		0	0
Gain on equity securities, net		0	0	0
All Other [Member]
Disaggregation of Revenue [Line Items]
Personal trust and agency accounts	0	0	0	0
Employee benefit and retirement-related accounts	0	0	0	0
Investment management and investment advisory agency accounts	0	0	0	0
Other	0	0	0	0
Non-sufficient funds (NSF) fees	0	0	0	0
Demand deposit account (DDA) charges	0	0	0	0
Other	0	0	0	0
Credit card	0	0	0	0
HELOC	1	0	4	0
Installment	(88)	6	(83)	6
Real estate	(1)	0	(10)	0
Commercial	140	18	141	1,075
Debit card fee income	0	0	0	0
Bank owned life insurance income	86	1,625	283	1,803
ATM Fees	0	0	0	0
OREO valuation adjustments	0	(1)	0	219
Gain on sale of OREO, net	0	(117)	(140)	2,651
Other components of net periodic benefit income	23	34	69	102
Other	(21)	14	2	(1)
Total other income	3,235	1,442	4,603	9,530
Net loss on sale of investment securities (2)	$ 0		0	0
Gain on equity securities, net		$ (139)	$ 4,337	$ 4,113