Park National (PRK) 10-Q 2 May 19 2019 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2019	May 01, 2019
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Entity Registrant Name	PARK NATIONAL CORP /OH/
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		16,646,975

Consolidated Condensed Balance

Consolidated Condensed Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Assets:
Cash and due from banks	$ 116,870	$ 141,890
Money market instruments	70,609	25,324
Cash and cash equivalents	187,479	167,214
Investment securities:
Debt Securities, Available-for-sale, Current	977,990	1,003,421
Debt securities held-to-maturity, at amortized cost (fair value of $359,620 and $351,422 at March 31, 2019 and December 31, 2018, respectively)	351,159	351,808
Other Investments and Securities, at Cost	53,152	55,851
Total investment securities	1,382,301	1,411,080
Loan balance	5,740,760	5,692,132
Allowance for loan losses	(53,368)	(51,512)
Net loans	5,687,392	5,640,620
Bank owned life insurance	188,839	188,417
Prepaid assets	98,675	94,079
Goodwill	112,739	112,739
Other intangible assets	6,682	6,971
Intangible Assets, Net (Including Goodwill)	119,421	119,710
Premises and equipment, net	60,506	59,771
Affordable housing tax credit investments	48,535	50,347
Other real estate owned	4,629	4,303
Interest Receivable	24,299	22,974
Mortgage loan servicing rights	10,082	10,178
Other	40,088	35,615
Total assets	7,852,246	7,804,308
Liabilities and Shareholders' Equity:
Noninterest bearing	1,767,596	1,804,881
Interest bearing	4,557,616	4,455,979
Total deposits	6,325,212	6,260,860
Short-term borrowings	212,569	221,966
Long-term debt	375,000	400,000
Subordinated debentures and notes	15,000	15,000
Unfunded commitments in affordable housing tax credit investments	19,624	22,282
Accrued interest payable	2,885	2,625
Other	56,912	49,069
Total liabilities	7,007,202	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; 16,586,153 shares issued at March 31, 2019 and 16,586,165 shares issued at December 31, 2018)	357,475	358,598
Retained earnings	619,971	614,069
Treasury shares (955,654 shares at March 31. 2019 and 887,987 shares at December 31, 2018)	(96,949)	(90,373)
Accumulated other comprehensive loss, net of taxes	(35,453)	(49,788)
Total shareholders' equity	845,044	832,506
Total liabilities and shareholders' equity	$ 7,852,246	$ 7,804,308

Consolidated Condensed Balanc_2

Consolidated Condensed Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale, Amortized Cost	$ 985,045	$ 1,028,883
Securities held-to-maturity, fair value	$ 359,620	$ 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	16,586,153	16,586,165
Treasury stock shares	955,654	887,987

Consolidated Condensed Statemen

Consolidated Condensed Statements Of Income - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Interest and dividend income:
Interest and fees on loans	$ 72,003,000	$ 64,402,000
Interest and dividends on:
Obligations of U.S. Government, its agencies and other securities	6,995,000	6,767,000
Interest Income, Securities, State and Municipal	2,217,000	2,174,000
Other interest income	641,000	371,000
Total interest and dividend income	81,856,000	73,714,000
Interest on deposits:
Demand and savings deposits	7,093,000	3,290,000
Time deposits	3,777,000	2,551,000
Interest on borrowings:
Short-term borrowings	739,000	575,000
Long-term debt	2,471,000	2,448,000
Total interest expense	14,080,000	8,864,000
Net interest income	67,776,000	64,850,000
Provision for loan losses	2,498,000	260,000
Net interest income after provision for loan losses	65,278,000	64,590,000
Noninterest Income [Abstract]
Debit card fee income	4,369,000	4,002,000
Bank owned life insurance income	1,006,000	1,009,000
ATM Fees	440,000	524,000
OREO valuation adjustments	(27,000)	(207,000)
Gain on sale of OREO, net	(12,000)	4,321,000
Gain (Loss) on Sale of Investments	0	(2,271,000)
Gain on equity securities, net	121,000	3,489,000
Other components of net periodic benefit income	1,183,000	1,705,000
Other	2,845,000	842,000
Total other income	22,025,000	26,903,000
Other expense:
Salaries and employee benefits	25,805,000	25,320,000
Employee Benefits and Share-based Compensation	8,430,000	7,029,000
Occupancy expense	3,011,000	2,936,000
Furniture and equipment expense	4,150,000	4,149,000
Data processing fees	2,133,000	1,773,000
Professional fees and services	6,006,000	6,190,000
Marketing	1,226,000	1,218,000
Insurance	1,156,000	1,428,000
Communication	1,333,000	1,250,000
Excise and Sales Taxes	1,005,000	1,105,000
Amortization of Intangible Assets	289,000	0
Other expense	2,283,000	1,910,000
Total other expense	56,827,000	54,308,000
Income before income taxes	30,476,000	37,185,000
Income taxes	5,021,000	6,062,000
Net income	25,455,000	31,123,000
Net income available to common shareholders	$ 25,455,000	$ 31,123,000
Net income available to common shareholders
Basic	$ 1.63	$ 2.04
Diluted	$ 1.62	$ 2.02
Weighted average common shares outstanding
Basic	15,651,541	15,288,332
Diluted	15,744,777	15,431,328
Cash dividends declared	$ 1.21	$ 0.94
Fiduciary and Trust [Member]
Noninterest Income [Abstract]
Revenue from Contract with Customer, Including Assessed Tax	$ 6,723,000	$ 6,395,000
Deposit Account [Member]
Noninterest Income [Abstract]
Revenue from Contract with Customer, Including Assessed Tax	2,559,000	2,922,000
Bank Servicing [Member]
Noninterest Income [Abstract]
Revenue from Contract with Customer, Including Assessed Tax	$ 2,818,000	$ 4,172,000

Consolidated Condensed Statem_2

Consolidated Condensed Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Net Income	$ 25,455	$ 31,123
Other comprehensive income, net of tax:
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	0	2,024
Unrealized net holding gain (loss) on debt securities available-for-sale, net of income tax effect of $3,866 and $(6,223) for the three months ended March 31, 2019 and 2018, respectively	14,541	(23,410)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax	(206)	0
Other comprehensive income (loss)	14,335	(21,386)
Comprehensive income	39,790	9,737
Accounting Standards Update 2016-01 [Member]
Other comprehensive income, net of tax:
Other comprehensive income (loss)	14,335
Accumulated Other Comprehensive Income (loss) [Member]
Other comprehensive income, net of tax:
Unrealized net holding gain (loss) on debt securities available-for-sale, net of income tax effect of $3,866 and $(6,223) for the three months ended March 31, 2019 and 2018, respectively	$ 14,335	$ (21,386)

Consolidated Condensed Statem_3

Consolidated Condensed Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, Tax	$ 3,866	$ (6,223)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax		538
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, Tax	$ (55)	$ 0

Consolidated Condensed Statem_4

Consolidated Condensed Statements Of Changes In Stockholders' Equity - USD ($)	Total	Preferred Stock [Member]	Common Stock [Member]	Retained Earnings [Member]	Treasury Stock At Cost [Member]	Accumulated Other Comprehensive Income (loss) [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (loss) [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption | Adjustments for New Accounting Pronouncement [Member]							$ 3,806,000	$ (3,806,000)
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets	$ 995,000					$ 3,806,000
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets | Accounting Standards Update 2016-01 [Member]				$ (1,917,000)		995,000
Balance at Dec. 31, 2017		$ 0	$ 307,726,000	561,908,000	$ (87,079,000)	(26,454,000)
Net Income	31,123,000			31,123,000
Other comprehensive income, net of tax:
Unrealized net holding (loss) gain on securities available-for-sale, net of income taxes	(23,410,000)					(21,386,000)
Dividends on common shares				(14,496,000)
Cash payment for fractional shares in dividend reinvestment plan			(1,000)
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures			(1,597,000)	(317,000)	(1,304,000)
Allocated Share-based Compensation Expense	1,100,000		1,121,000
Balance at Mar. 31, 2018		0	307,249,000	583,941,000	(85,775,000)	(52,641,000)
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets | Adjustments for Change in Accounting Principle [Domain]				(143,000)
Balance at Dec. 31, 2018	832,506,000	0	358,598,000	614,069,000	(90,373,000)	(49,788,000)
Net Income	25,455,000			25,455,000
Other comprehensive income, net of tax:
Unrealized net holding (loss) gain on securities available-for-sale, net of income taxes	14,541,000					14,335,000
Dividends on common shares				(19,137,000)
Cash payment for fractional shares in dividend reinvestment plan			(1,000)
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures			(2,480,000)	(273,000)	(1,926,000)
Allocated Share-based Compensation Expense	1,400,000		1,358,000
Treasury Stock, Value, Acquired, Cost Method					8,502,000
Balance at Mar. 31, 2019	$ 845,044,000	$ 0	$ 357,475,000	$ 619,971,000	$ (96,949,000)	$ (35,453,000)

Consolidated Condensed Statem_5

Consolidated Condensed Statements Of Changes In Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Stockholders' Equity [Abstract]
Common Stock, Dividends, Per Share, Cash Paid	$ 1.21	$ 0.94
Treasury Stock, Shares, Acquired	86,650	0
Stock Issued During Period, Shares, Restricted Stock Award, Gross	27,719	18,800

Consolidated Condensed Statem_6

Consolidated Condensed Statements Of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	$ 2,498,000	$ 260,000
Amortization of investment securities, net	(1,583,000)	(1,506,000)
Depreciation of premises and equipment	2,133,000	2,135,000
Amortization of investment securities, net	353,000	405,000
Realized net investment securities losses	0	2,271,000
Gain on equity securities, net	121,000	3,489,000
Loan originations to be sold in secondary market	(34,419,000)	(40,379,000)
Proceeds from sale of loans in secondary market	35,123,000	38,769,000
Share-based compensation expense	1,358,000	1,121,000
OREO valuation adjustments	27,000	207,000
(Loss) gain on sale of OREO, net	12,000	(4,321,000)
Bank owned life insurance income	(1,006,000)	(1,009,000)
Investment in qualified affordable housing tax credits amortization	1,812,000	1,851,000
Changes in assets and liabilities:
Increase in other assets	(2,734,000)	(1,159,000)
Increase (decrease) in other liabilities	(3,150,000)	(2,809,000)
Net cash provided by operating activities	24,655,000	22,054,000
Investing activities:
Payments for (Proceeds from) Federal Home Loan Bank Stock	5,405,000	0
Proceeds from sales of investment securities	0	252,055,000
Proceeds from Sale, Maturity and Collection of Investments [Abstract]
Available-for-sale securities	44,066,000	41,097,000
Held-to-maturity securities	68,000	1,652,000
Payments to Acquire Investments [Abstract]
Payments to Acquire Debt Securities, Available-for-sale	0	270,005,000
Equity securities	0	(101,000)
Payments to Acquire Federal Reserve Bank Stock	(2,585,000)	0
Net loan originations, portfolio loans	(47,909,000)	82,288,000
Payments for Affordable Housing Programs	(2,658,000)	0
Proceeds from the sale of OREO	181,000	9,816,000
Life insurance death benefits	584,000	1,379,000
Purchases of premises and equipment	(2,902,000)	(2,473,000)
Net cash (used in) provided by investing activities	(5,750,000)	115,708,000
Financing activities:
Net increase in deposits	64,389,000	266,968,000
Net decrease in short-term borrowings	(9,397,000)	(207,199,000)
Proceeds from issuance of long-term debt	25,000,000	25,000,000
Repayments of Long-term Debt	(50,000,000)	(100,000,000)
Payments Related to Tax Withholding for Share-based Compensation	(827,000)	(610,000)
Repurchase of common shares to be held as treasury shares	(8,502,000)	0
Cash dividends paid	(19,303,000)	(14,452,000)
Net cash provided by (used in) financing activities	1,360,000	(30,293,000)
Increase in cash and cash equivalents	20,265,000	107,469,000
Cash and cash equivalents at beginning of year	167,214,000	169,112,000
Cash and cash equivalents at end of period	187,479,000	276,581,000
Supplemental disclosures of cash flow information:
Cash paid for interest	13,820,000	9,118,000
Non cash activities:
Real Estate Owned, Transfer to Real Estate Owned	568,000	628,000
Other repossessed assets, transfer to repossessed assets	0	2,448,000
Other Significant Noncash Transaction, Value of Consideration Received	10,970,000	0
Consumer Portfolio Segment [Member]
Changes in assets and liabilities:
Increase in prepaid dealer premiums	(281,000)	(471,000)
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	$ 822,000	$ 945,000

Basis Of Presentation

Basis Of Presentation	3 Months Ended
	Mar. 31, 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 period ended March 31, 2019 are not necessarily indicative of the operating results to be anticipated for the fiscal 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 United States ("U.S.") generally accepted accounting principles (“U.S. GAAP”). These financial statements should be read in conjunction with the consolidated financial statements incorporated by reference in the Annual Report on Form 10-K of Park for the fiscal year ended December 31, 2018 from Park’s 2018 Annual Report to Shareholders (“Park's 2018 Annual Report”).

Recent Accounting Pronouncement

Recent Accounting Pronouncements	3 Months Ended
	Mar. 31, 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 Financial Accounting Standards Board ("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 will be 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 this clarification 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 this clarification 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 this clarification 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 determining 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 this clarification in determining the appropriate adoption of ASU 2016-02 on January 1, 2019. 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 ("CECL") model. The CECL model is applicable to the measurement of credit losses on financial assets measured at amortized cost, including loan receivables, held-to-maturity ("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 and is currently in the process of evaluating segmentation and model selection. 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.

Business Combinations

Business Combinations	3 Months Ended
	Mar. 31, 2019
Business Combinations [Abstract]
Business Combination Disclosure [Text Block]	Business Combinations 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 ("PNB"), with PNB continuing as the surviving entity pursuant to the Agreement and Plan of Merger and Reorganization (the “Merger Agreement”), dated as of January 22, 2018, by and among Park, PNB, and NewDominion. In accordance with the 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 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 outstanding common shares. The remaining 8.55% of NewDominion's outstanding common shares 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 months ended March 31, 2019 and 2018, Park recorded merger-related expenses of $71,000 and $169,000 , 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 The following table presents supplemental pro forma information as if the acquisition 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 transaction, 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 transaction been effected on the assumed date. Three months ended March 31, (dollars in thousands, except per share data) 2018 Net interest income $ 68,387 Net income $ 31,723 Basic earnings per share $ 2.02 Diluted earnings per share $ 2.00

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 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 periods ended March 31, 2019 and 2018 , there were no investment securities deemed to be other-than-temporarily impaired. Investment securities at March 31, 2019 , were as follows: Debt Securities Available-for-Sale (In thousands) Amortized Cost Gross Unrealized Holding Gains Gross Unrealized Holding Losses Estimated Fair Value U.S. Government sponsored entities' asset-backed securities $ 985,045 $ 4,924 $ 11,979 $ 977,990 Total $ 985,045 $ 4,924 $ 11,979 $ 977,990 Debt Securities Held-to-Maturity (In thousands) Amortized Cost Gross Gross Estimated Fair Value U.S. Government sponsored entities' asset-backed securities $ 46,462 $ 154 $ 339 $ 46,277 Obligations of states and political subdivisions 304,697 8,776 $ 130 313,343 Total $ 351,159 $ 8,930 $ 469 $ 359,620 Investment securities with unrealized/unrecognized losses at March 31, 2019 , 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 losses Fair value Unrealized/unrecognized Fair value Unrealized/unrecognized Debt Securities Available-for-Sale U.S. Government sponsored entities' asset-backed securities $ — $ — $ 519,644 $ 11,979 $ 519,644 $ 11,979 Total $ — $ — $ 519,644 $ 11,979 $ 519,644 $ 11,979 Debt Securities Held-to-Maturity U.S. Government sponsored entities' asset-backed securities $ — $ — $ 33,392 $ 339 $ 33,392 $ 339 Obligations of states and political subdivisions — $ — 33,298 130 $ 33,298 130 Total $ — $ — $ 66,690 $ 469 $ 66,690 $ 469 Investment securities at December 31, 2018 , were as follows: Debt Securities Available-for-Sale (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 Held-to-Maturity (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 Available-for-Sale 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 Held-to-Maturity 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 March 31, 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. The amortized cost and estimated fair value of investments in debt securities at March 31, 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 Available-for-Sale (In thousands) Amortized cost Fair value Tax equivalent yield U.S. Government sponsored entities' asset-backed securities $ 985,045 $ 977,990 2.35 % Securities Held-to-Maturity (In thousands) Amortized cost Fair value Tax equivalent yield (1) Obligations of state and political subdivisions: Due five through ten years $ 4,024 $ 4,098 3.04 % Due over ten years 300,673 309,245 3.69 % Total (1) $ 304,697 $ 313,343 3.68 % U.S. Government sponsored entities' asset-backed securities $ 46,462 $ 46,277 2.83 % (1) The tax equivalent yield for obligations of state and political subdivisions includes the effects of a taxable equivalent adjustment using a 21% federal corporate income tax rate. There were no sales of investment securities during the three -month period ended March 31, 2019 . During the three-month period ended March 31, 2018, Park sold certain AFS debt securities with a book value of $245.0 million at a gross loss of $2.6 million and sold certain AFS debt securities with a book value of $2.0 million at a gross gain of $60,000 . Additionally, during the three-month period ended March 31, 2018, Park sold certain HTM debt securities with a book value of $7.4 million at a gross gain of $291,000 . These HTM securities had been paid down by 96.3% of the principal outstanding at acquisition. Investment securities having a book value of $597 million and $634 million at March 31, 2019

Other Investment Securities

Other Investment Securities	3 Months Ended
	Mar. 31, 2019
Other Investment Securities [Abstract]
Other Investment Securities	Other Investment Securities Other investment securities consist of stock investments in the FHLB, the Federal Reserve Bank ("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"). The carrying amount of other investment securities at March 31, 2019 and December 31, 2018 was as follows: (In thousands) March 31, 2019 December 31, 2018 FHLB stock $ 37,983 $ 43,388 FRB stock 10,811 8,225 Equity investments carried at fair value 1,769 1,649 Equity investments carried at cost/modified cost (1) 2,589 2,589 Total other investment securities $ 53,152 $ 55,851 (1) There have been no impairments, downward adjustments, or upward adjustments made to equity investments carried at modified cost. During the three months ended March 31, 2019 and 2018, $121,000 and $(11,000) , respectively, of unrealized gains (losses) 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 three months ended March 31, 2018 relates to Park's 8.55%

Loans

Loans	3 Months Ended
	Mar. 31, 2019
Loans and Leases Receivable Disclosure [Abstract]
Loans	Loans The composition of the loan portfolio, by class of loan, as of March 31, 2019 and December 31, 2018 was as follows: March 31, 2019 December 31, 2018 (In thousands) Loan Balance Accrued Interest Receivable Recorded Investment Loan Balance Accrued Interest Receivable Recorded Investment Commercial, financial and agricultural * $ 1,086,690 $ 5,574 $ 1,092,264 $ 1,072,786 $ 4,603 $ 1,077,389 Commercial real estate * 1,326,894 4,829 1,331,723 1,283,045 4,750 1,287,795 Construction real estate: Commercial 168,880 760 169,640 175,300 801 176,101 Mortgage 71,855 189 72,044 70,541 151 70,692 Installment 2,325 9 2,334 2,433 7 2,440 Residential real estate: Commercial 429,637 1,303 430,940 429,730 1,150 430,880 Mortgage 1,127,986 1,801 1,129,787 1,134,278 1,227 1,135,505 HELOC 208,313 1,190 209,503 215,283 1,159 216,442 Installment 13,634 40 13,674 14,327 36 14,363 Consumer 1,302,429 3,854 1,306,283 1,292,136 3,756 1,295,892 Leases 2,117 24 2,141 2,273 26 2,299 Total loans $ 5,740,760 $ 19,573 $ 5,760,333 $ 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 $12.3 million at March 31, 2019 and $12.5 million at December 31, 2018 , which represented a net deferred income position in both periods. At March 31, 2019 and December 31, 2018 , loans included purchase accounting adjustments of $4.2 million and $4.4 million , respectively, which represented a net deferred income position in both periods. 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 $2.2 million and $2.3 million had been reclassified to loans at March 31, 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 troubled debt restructurings ("TDRs"), and loans past due 90 days or more and still accruing by class of loan as of March 31, 2019 and December 31, 2018 : March 31, 2019 (In thousands) Nonaccrual Loans Accruing TDRs Loans Past Due 90 Days or More and Accruing Total Nonperforming Loans Commercial, financial and agricultural $ 14,678 $ 221 $ 45 $ 14,944 Commercial real estate 28,114 3,024 — 31,138 Construction real estate: Commercial 2,401 478 — 2,879 Mortgage — 8 80 88 Installment 11 8 — 19 Residential real estate: Commercial 1,992 54 — 2,046 Mortgage 16,435 9,010 582 26,027 HELOC 1,848 954 155 2,957 Installment 505 1,174 — 1,679 Consumer 3,191 898 727 4,816 Total loans $ 69,175 $ 15,829 $ 1,589 $ 86,593 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 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 March 31, 2019 and December 31, 2018 . March 31, 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 $ 14,899 $ 14,844 $ 55 $ 15,194 $ 15,120 $ 74 Commercial real estate 31,138 31,138 — 28,426 28,426 — Construction real estate: Commercial 2,879 2,879 — 1,866 1,866 — Mortgage 8 — 8 15 — 15 Installment 19 — 19 28 — 28 Residential real estate: Commercial 2,046 2,046 — 2,732 2,732 — Mortgage 25,445 — 25,445 25,992 — 25,992 HELOC 2,802 — 2,802 3,186 — 3,186 Installment 1,679 — 1,679 1,517 — 1,517 Consumer 4,089 — 4,089 4,220 — 4,220 Total loans $ 85,004 $ 50,907 $ 34,097 $ 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 March 31, 2019 and December 31, 2018 . March 31, 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 $ 4,221 $ 3,488 $ — $ 8,999 $ 3,713 $ — Commercial real estate 29,876 29,429 — 26,663 26,213 — Construction real estate: Commercial 5,693 2,879 — 4,679 1,866 — Residential real estate: Commercial 2,048 1,993 — 2,691 2,374 — With an allowance recorded: Commercial, financial and agricultural 18,238 11,356 2,403 13,736 11,407 2,169 Commercial real estate 1,709 1,709 58 2,255 2,213 86 Construction real estate: Commercial — — — — — — Residential real estate: Commercial 53 53 7 358 358 18 Total $ 61,838 $ 50,907 $ 2,468 $ 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 March 31, 2019 and December 31, 2018 , there were $4.1 million and $8.8 million , respectively, of partial charge-offs on loans individually evaluated for impairment with no related allowance recorded and $6.9 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 for loan losses included specific reserves related to loans individually evaluated for impairment at March 31, 2019 and December 31, 2018 of $2.5 million and $2.3 million , respectively. These loans with specific reserves had a recorded investment of $13.1 million and $14.0 million as of March 31, 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 months ended March 31, 2019 and March 31, 2018 : Three Months Ended Three Months Ended (In thousands) Recorded Investment as of March 31, 2019 Average Recorded Investment Interest Income Recognized Recorded Investment as of March 31, 2018 Average Recorded Investment Interest Income Recognized Commercial, financial and agricultural $ 14,844 $ 14,924 $ 47 $ 27,050 $ 20,078 $ 174 Commercial real estate 31,138 28,851 271 18,983 18,193 202 Construction real estate: Commercial 2,879 2,239 12 1,393 1,377 14 Residential real estate: Commercial 2,046 2,588 20 2,896 11,215 31 Total $ 50,907 $ 48,602 $ 350 $ 50,322 $ 50,863 $ 421 The following tables present the aging of the recorded investment in past due loans as of March 31, 2019 and December 31, 2018 by class of loan. March 31, 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 $ 1,428 $ 2,290 $ 3,718 $ 1,088,546 $ 1,092,264 Commercial real estate 57 3,886 3,943 1,327,780 1,331,723 Construction real estate: Commercial 368 2,299 2,667 166,973 169,640 Mortgage 254 80 334 71,710 72,044 Installment 18 11 29 2,305 2,334 Residential real estate: Commercial 124 873 997 429,943 430,940 Mortgage 9,913 8,524 18,437 1,111,350 1,129,787 HELOC 462 975 1,437 208,066 209,503 Installment 98 338 436 13,238 13,674 Consumer 6,035 1,679 7,714 1,298,569 1,306,283 Leases — — — 2,141 2,141 Total loans $ 18,757 $ 20,955 $ 39,712 $ 5,720,621 $ 5,760,333 (1) Includes an aggregate of $1.6 million of loans past due 90 days or more and accruing. The remaining loans were past due nonaccrual loans. (2) Includes an aggregate off $49.8 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 March 31, 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 March 31, 2019 and December 31, 2018 for all commercial loans: March 31, 2019 (In thousands) 5 Rated 6 Rated Nonaccrual and Accruing TDRs Purchase Credit Impaired (1) Pass-Rated Recorded Investment Commercial, financial and agricultural * $ 12,980 $ 543 $ 14,899 $ 330 $ 1,063,512 $ 1,092,264 Commercial real estate * 4,412 9 31,138 3,012 1,293,152 1,331,723 Construction real estate: Commercial 493 2 2,879 — 166,266 169,640 Residential real estate: Commercial 1,761 104 2,046 30 426,999 430,940 Leases — — — — 2,141 2,141 Total commercial loans $ 19,646 $ 658 $ 50,962 $ 3,372 $ 2,952,070 $ 3,026,708 * 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 $924,000 at March 31, 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 Acquired with Deteriorated Credit Quality In conjunction with the NewDominion 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 March 31, 2019 and December 31, 2018 was $4.3 million and $4.4 million , respectively, while the outstanding customer balance was $4.5 million and $4.6 million , respectively. At March 31, 2019 and December 31, 2018, no allowance for loan losses had been recognized related to the acquired impaired loans. Troubled Debt Restructurings ("TDRs") Management classifies loans as TDRs when a borrower is experiencing financial difficulties and Park has granted a concession to the borrower as part of a modification or in the loan renewal process. In order to determine whether a borrower is experiencing financial difficulty, an evaluation is performed of the probability that the borrower will be in payment default on any of the borrower's debt in the foreseeable future without the modification. This evaluation is performed in accordance with the Company’s internal underwriting policy. Management’s policy is to modify loans by extending the term or by granting a temporary or permanent contractual interest rate below the market rate, not by forgiving debt. 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 periods ended March 31, 2019 and March 31, 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 $23,000 and $324,000 of loans during the three -month periods ended March 31, 2019 and March 31, 2018 , respectively. At March 31, 2019 and December 31, 2018 , there were $23.7 million and $24.6 million , respectively, of TDRs included in the nonaccrual loan totals. At March 31, 2019 and December 31, 2018 , $18.0 million and $19.2 million , respectively, of these nonaccrual TDRs were performing in accordance with the terms of the restructured note. As of March 31, 2019 and December 31, 2018 , loans with a recorded investment of $15.8 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 March 31, 2019 and December 31, 2018 , Park had commitments to lend $0.2 million and $0.3 million , respectively, of additional funds to borrowers whose outstanding loan terms had been modified in a TDR. At March 31, 2019 and December 31, 2018 , there were $1.3 million and $1.2 million of specific reserves related to TDRs. Modifications made in 2018 and 2019 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 March 31, 2019 as a result of TDRs identified in the period. There were $10,000 of additional specific reserves recorded during the three -month period ended March 31, 2018 as a result of TDRs identified in the period. The terms of certain other loans were modified during the three -month periods ended March 31, 2019 and March 31, 2018 that did not meet the definition of a TDR. There were no substandard commercial loans modified during the three -month periods ended March 31, 2019 and 2018 which did not meet the definition of a TDR. Consumer loans modified during the three -month period ended March 31, 2019 which did not meet the definition of a TDR had a total recorded investment of $7.2 million . Consumer loans with a recorded investment of $6.0 million were modified during the three -month period ended March 31, 2018 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 March 31, 2019 and March 31, 2018 , as well as the recorded investment of these contracts at March 31, 2019 and March 31, 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 5 $ — $ 472 $ 472 Commercial real estate 2 — 2,215 2,215 Construction real estate: Commercial 1 480 — 480 Mortgage — — — — Installment — — — — Residential real estate: Commercial — — — — Mortgage 8 54 510 564 HELOC 3 — 81 81 Installment 8 94 95 189 Consumer 69 24 535 559 Total loans 96 $ 652 $ 3,908 $ 4,560 Three Months Ended (In thousands) Number of Contracts Accruing Nonaccrual Total Recorded Investment Commercial, financial and agricultural 4 $ — $ 55 $ 55 Commercial real estate 3 — 249 249 Construction real estate: Commercial 1 63 — 63 Mortgage — — — — Installment — — — — Residential real estate: Commercial — — — — Mortgage 9 — 650 650 HELOC 2 251 88 339 Installment 5 102 13 115 Consumer 50 13 351 364 Total loans 74 $ 429 $ 1,406 $ 1,835 Of those loans which were modified and determined to be a TDR during the three -month period ended March 31, 2019 , $0.7 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 March 31, 2018 , $0.5 million were on nonaccrual status as of December 31, 2017 . The following table presents 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 periods ended March 31, 2019 and March 31, 2018 , respectively. For this table, 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 6 $ 153 3 $ 207 Commercial real estate — — 1 114 Construction real estate: Commercial — — — — Mortgage — — — — Installment — — — — Residential real estate: Commercial — — 1 17 Mortgage 3 68 7 536 HELOC 5 68 3 174 Installment 1 28 — — Consumer 40 343 41 329 Leases — — — — Total loans 55 $ 660 56 $ 1,377 Of the $0.7 million in modified TDRs which defaulted during the three -month period ended March 31, 2019 , $9,000 were accruing loans and $0.7 million were nonaccrual loans. Of the $1.4 million in modified TDRs which defaulted during the three -month period ended March 31, 2018 , $72,000 were accruing loans and $1.3 million

Allowance For Loan Losses

Allowance For Loan Losses	3 Months Ended
	Mar. 31, 2019
Allowance for Loan and Lease Losses Write-offs, Net [Abstract]
Allowance For Loan Losses	Allowance for Loan Losses The allowance for loan losses ("ALLL") 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 three months ended March 31, 2019 . The activity in the allowance for loan losses for the three -month periods ended March 31, 2019 and March 31, 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 $ 16,777 $ 9,768 $ 4,463 $ 8,731 $ 11,773 $ — $ 51,512 Charge-offs 198 54 — 29 2,706 — 2,987 Recoveries 416 59 88 382 1,400 — 2,345 Net (recoveries)/charge-offs (218 ) (5 ) (88 ) (353 ) 1,306 — 642 Provision 342 420 13 86 1,637 — 2,498 Ending balance $ 17,337 $ 10,193 $ 4,564 $ 9,170 $ 12,104 $ — $ 53,368 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 $ 15,022 $ 9,601 $ 4,430 $ 9,321 $ 11,614 $ — $ 49,988 Charge-offs 649 47 — 116 2,638 — 3,450 Recoveries 652 87 59 360 1,013 — 2,171 Net (recoveries)/charge-offs (3 ) (40 ) (59 ) (244 ) 1,625 — 1,279 (Recovery)/provision (948 ) (153 ) (26 ) (150 ) 1,537 — 260 Ending balance $ 14,077 $ 9,488 $ 4,463 $ 9,415 $ 11,526 $ — $ 48,969 Loans collectively evaluated for impairment in the following tables include all performing loans at March 31, 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 March 31, 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 March 31, 2019 and December 31, 2018 was as follows: March 31, 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 $ 2,403 $ 58 $ — $ 7 $ — $ — $ 2,468 Collectively evaluated for impairment 14,934 10,135 4,564 9,163 12,104 — 50,900 Acquired with deteriorated credit quality — — — — — — — Total ending allowance balance $ 17,337 $ 10,193 $ 4,564 $ 9,170 $ 12,104 $ — $ 53,368 Loan balance: Loans individually evaluated for impairment $ 14,843 $ 31,113 $ 2,880 $ 2,045 $ — $ — $ 50,881 Loans collectively evaluated for impairment 1,071,519 1,292,777 240,180 1,777,495 1,302,429 2,117 5,686,517 Loans acquired with deteriorated credit quality (1) 328 3,004 — 30 — — 3,362 Total ending loan balance $ 1,086,690 $ 1,326,894 $ 243,060 $ 1,779,570 $ 1,302,429 $ 2,117 $ 5,740,760 Allowance for loan losses as a percentage of loan balance: Loans individually evaluated for impairment 16.19 % 0.19 % — % 0.34 % — % — % 4.85 % Loans collectively evaluated for impairment 1.39 % 0.78 % 1.90 % 0.52 % 0.93 % — % 0.90 % Loans acquired with deteriorated credit quality — % — % — % — % — % — % — % Total 1.60 % 0.77 % 1.88 % 0.52 % 0.93 % — % 0.93 % Recorded investment: Loans individually evaluated for impairment $ 14,844 $ 31,138 $ 2,879 $ 2,046 $ — $ — $ 50,907 Loans collectively evaluated for impairment 1,077,090 1,297,573 241,139 1,781,828 1,306,283 2,141 5,706,054 Loans acquired with deteriorated credit quality (1) 330 3,012 — 30 — — 3,372 Total ending recorded investment $ 1,092,264 $ 1,331,723 $ 244,018 $ 1,783,904 $ 1,306,283 $ 2,141 $ 5,760,333 (1) Excludes loans acquired with deteriorated credit quality which are individually evaluated for impairment due to additional credit deterioration post acquisition. These loans had a balance of $924,000 , a recorded investment of $925,000 , and zero allowance as of March 31, 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 post acquisition. These loans had a balance of $475,000 , a recorded investment of $475,000 , and zero

Mortgage Loans Held for Sale

Mortgage Loans Held for Sale	3 Months Ended
	Mar. 31, 2019
Receivables [Abstract]
Mortgage Loans Held For Sale	Loans Held For Sale Mortgage loans held for sale are carried at their fair value. At March 31, 2019 and December 31, 2018 , respectively, Park had $4.3 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 $4.2 million and $4.1 million at March 31, 2019 and December 31, 2018 , respectively. The gain expected upon sale was $71,000 and $60,000 at March 31, 2019 and December 31, 2018 , respectively. None of these loans were 90 days or more past due or on nonaccrual status as of March 31, 2019 or December 31, 2018

Goodwill and other intangibles

Goodwill and other intangibles	3 Months Ended
	Mar. 31, 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 three months ended March 31, 2019 and 2018. (in thousands) Goodwill Other intangible assets Total December 31, 2017 $ 72,334 $ — $ 72,334 Acquired goodwill and other intangible assets — — — Amortization — — — March 31, 2018 $ 72,334 $ — $ 72,334 December 31, 2018 $ 112,739 $ 6,971 $ 119,710 Acquired goodwill and other intangible assets — — — Amortization — 289 289 March 31, 2019 $ 112,739 $ 6,682 $ 119,421 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 2018, 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 March 31, 2019. Park had no acquired intangible assets as of March 31, 2018. 2019 (in thousands) Gross Carrying Amount Accumulated Amortization Other intangible assets: Core deposit intangibles $ 6,249 $ 867 Trade name intangible 1,300 — Total $ 7,549 $ 867 Core deposit intangibles 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 $289,000 for the three months ended March 31, 2019. There was no amortization expense for the three months ended March 31, 2018. Estimated amortization expense for each of the periods listed below follows: (in thousands) Total Nine months ending December 31, 2019 $ 945 2020 1,149 2021 869 2022 629 2023 521

Investment in Qualified Afforda

Investment in Qualified Affordable Housing	3 Months Ended
	Mar. 31, 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 March 31, 2019 and December 31, 2018. (in thousands) March 31, 2019 December 31, 2018 Affordable housing tax credit investments $ 48,535 $ 50,347 Unfunded commitments 19,624 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 March 31, 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. Additionally, during the three months ended March 31, 2019 and 2018, Park recognized tax credits and other benefits from its affordable housing tax credit investments of $2.2 million and $2.7 million

Other Real Estate Owned

Other Real Estate Owned	3 Months Ended
	Mar. 31, 2019
Other Real Estate Owned [Abstract]
Other Real Estate Owned	Foreclosed and Repossessed Assets Park typically transfers a loan to other real estate owned ("OREO") at the time that Park takes deed/title to the asset. The carrying amounts of foreclosed properties held at March 31, 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) March 31, 2019 December 31, 2018 OREO: Commercial real estate $ 2,539 $ 2,359 Construction real estate 1,107 1,108 Residential real estate 983 836 Total OREO $ 4,629 $ 4,303 Loans in process of foreclosure: Residential real estate $ 2,789 $ 2,346

Loan Servicing

Loan Servicing	3 Months Ended
	Mar. 31, 2019
Transfers and Servicing of Financial Assets [Abstract]
Loan Servicing	Loan Servicing Park serviced sold mortgage loans of $1.39 billion at both December 31, 2018 and March 31, 2019 and $1.37 billion at March 31, 2018 . At March 31, 2019 , $2.4 million of the sold mortgage loans were sold with recourse, compared to $2.5 million at December 31, 2018 and $2.8 million at March 31, 2018 . Management closely monitors the delinquency rates on the mortgage loans sold with recourse. At March 31, 2019 and December 31, 2018, management had established reserves of $23,000 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 mortgage servicing rights (“MSRs”) is assessed for impairment with a comparison to fair value. MSRs are carried at the lower of their amortized cost or fair value. 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 (In thousands) 2019 2018 Mortgage servicing rights: Carrying amount, net, beginning of period $ 10,178 $ 9,688 Additions 262 328 Amortization (301 ) (352 ) Changes in valuation allowance (57 ) 305 Carrying amount, net, end of period $ 10,082 $ 9,969 Valuation allowance: Beginning of period $ 232 $ 630 Changes in valuation allowance 57 (305 ) End of period $ 289 $ 325 Servicing fees included in other service income were $0.9 million

Leases

Leases	3 Months Ended
	Mar. 31, 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, 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 its 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 (i.e. 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 standard or make the new required lease disclosures for periods prior to the effective date. Upon adoption of this lease guidance on January 1, 2019, Park recorded an initial right-of-use ("ROU") asset of $11.0 million , 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 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 comprise 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 “Other assets" and "Other liabilities", respectively, on Park's consolidated condensed balance sheet. The carrying amount of Park's ROU asset and lease liability at March 31, 2019 was $10.6 million and $11.4 million , respectively. Park's operating lease expense is recorded in "Occupancy expense" on the Company's consolidated condensed statements on income. Other information related to operating leases as of March 31, 2019 was as follows: Three Months Ended (Dollars in thousands) 2019 Lease cost Operating lease cost $ 663 Sublease income (93 ) Total lease cost $ 570 Other information Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 656 Weighted-average remaining lease term - operating leases (years) 6.6 Weighted-average discount rate - operating leases 3.1 % Undiscounted cash flows included in lease liabilities have expected contractual payments as follows: Three Months Ended (in thousands) 2019 2019 $ 2,025 2020 2,168 2021 1,892 2022 1,797 2023 1,709 Thereafter 3,098 Total undiscounted minimum lease payments $ 12,689 Present value adjustment (1,301 ) Total lease liabilities $ 11,388

Repurchase Agreement Borrowings

Repurchase Agreement Borrowings	3 Months Ended
	Mar. 31, 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 March 31, 2019 and December 31, 2018 , Park's repurchase agreement borrowings totaled $158 million and $165 million , respectively. These borrowings were collateralized with U.S. government and agency securities with a fair value of $206 million and $272 million at March 31, 2019 and December 31, 2018 , respectively. Declines in the value of the collateral would require Park to pledge additional securities. As of March 31, 2019 and December 31, 2018 , Park had $877 million and $933 million , respectively, of available unpledged securities. The table below shows the remaining contractual maturity of repurchase agreements by collateral pledged at March 31, 2019 and December 31, 2018 : March 31, 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 $ 157,569 $ — $ — $ — $ 157,569 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	3 Months Ended
	Mar. 31, 2019
Derivative [Line Items]
Derivative Instruments and Hedging Activities Disclosure [Text Block]	Derivatives Park utilizes interest rate swap agreements as part of its asset liability management strategy to help manage its interest rate risk position. 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. Interest Rate Swaps Designated as Cash Flow Hedges : Interest rate swaps with notional amounts totaling $25.0 million as of March 31, 2019 were designated as cash flow hedges of certain FHLB advances an d were determined to be fully effective during the three months ended March 31, 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 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 terms of the swaps. There were no interest rate swaps as of December 31, 2018. Summary information about the interest-rate swaps designated as cash flow hedges as of March 31, 2019 is as follows: (In thousands) March 31, 2019 Notional amounts $ 25,000 Weighted average pay rates 2.595 % Weighted average receive rates 2.765 % Weighted average maturity (years) 3.2 Unrealized losses $ 261 Interest income recorded on this swap transaction totaled $8,000 for the three months ended March 31, 2019. No interest income or expense related to swap transactions was recorded during the three months ended March 31, 2018. Cash Flow Hedge The following table presents the net gains (losses), net of income taxes, recorded in accumulated other comprehensive loss and the consolidated condensed statements of income related to the cash flow derivative instruments for the three months ended March 31, 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 $ (206 ) $ — $ — The following table reflects the cash flow hedges included in the consolidated condensed balance sheets as of March 31, 2019. (In thousands) March 31, 2019 Notional Amount Fair Value Included in other liabilities: Interest rate swaps related to FHLB advances $ 25,000 $ (261 ) Total included in other liabilities $ 25,000 $ (261 )

Other Comprehensive Income (Los

Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 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 periods ended March 31, 2019 and 2018 : (in thousands) Changes in pension plan assets and benefit obligations Unrealized net holding loss on cash flow hedge Unrealized gains and losses on AFS debt securities Total Beginning balance at January 1, 2019 $ (29,672 ) $ — $ (20,116 ) $ (49,788 ) Other comprehensive (loss) income before reclassifications — (206 ) 14,541 14,335 Net current period other comprehensive (loss) income — (206 ) 14,541 14,335 Ending balance at March 31, 2019 $ (29,672 ) $ (206 ) $ (5,575 ) $ (35,453 ) 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 — — (23,410 ) (23,410 ) Amounts reclassified from accumulated other comprehensive loss — — 2,024 2,024 Net current period other comprehensive loss $ — $ — $ (21,386 ) $ (21,386 ) Ending balance at March 31, 2018 $ (26,701 ) $ — $ (25,940 ) $ (52,641 ) During the three-month period ended March 31, 2019, there were no reclassifications out of accumulated other comprehensive loss. During the three-month period ended March 31, 2018, there was $2.6 million ( $2.0 million

Earnings Per Common Share

Earnings Per Common Share	3 Months Ended
	Mar. 31, 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 months ended March 31, 2019 and 2018 . Three Months Ended (In thousands, except share and per common share data) 2019 2018 Numerator: Net income $ 25,455 $ 31,123 Denominator: Weighted-average common shares outstanding 15,651,541 15,288,332 Effect of dilutive performance-based restricted stock units ("PBRSUs") and time-based restricted stock units ("TBRSUs") 93,236 142,996 Weighted-average common shares outstanding adjusted for the effect of dilutive PBRSUs and TBRSUs 15,744,777 15,431,328 Earnings per common share: Basic earnings per common share $ 1.63 $ 2.04 Diluted earnings per common share $ 1.62 $ 2.02 Park awarded 58,740 and 48,053 PBRSUs to certain employees during the three months ended March 31, 2019 and 2018, respectively. Park repurchased 86,650 common shares during the three months ended March 31, 2019 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). No

Segment Information

Segment Information	3 Months Ended
	Mar. 31, 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 (“GFSC”). "All Other", which primarily consists of Park as the "Parent Company" and SE Property Holdings, LLC ("SEPH"), 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 March 31, 2019 (In thousands) PNB GFSC All Other Total Net interest income $ 66,282 $ 1,325 $ 169 $ 67,776 Provision for (recovery of) loan losses 2,440 145 (87 ) 2,498 Other income 20,708 32 1,285 22,025 Other expense 51,974 845 4,008 56,827 Income (loss) before income taxes $ 32,576 $ 367 $ (2,467 ) $ 30,476 Income tax expense (benefit) 5,884 80 (943 ) 5,021 Net income (loss) $ 26,692 $ 287 $ (1,524 ) $ 25,455 Assets (as of March 31, 2019) $ 7,801,148 $ 30,238 $ 20,860 $ 7,852,246 Operating Results for the three months ended March 31, 2018 (In thousands) PNB GFSC All Other Total Net interest income $ 61,441 $ 1,305 $ 2,104 $ 64,850 (Recovery of) provision for loan losses (67 ) 503 (176 ) 260 Other income 19,915 30 6,958 26,903 Other expense 49,001 760 4,547 54,308 Income before income taxes $ 32,422 $ 72 $ 4,691 $ 37,185 Income tax expense 5,677 15 370 6,062 Net income $ 26,745 $ 57 $ 4,321 $ 31,123 Assets (as of March 31, 2018) $ 7,455,518 $ 30,553 $ 32,899 $ 7,518,970 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 periods ended March 31, 2019 and 2018 . The reconciling amounts for consolidated total assets for the periods ended March 31, 2019 and 2018

Share Based Compensation

Share Based Compensation	3 Months Ended
	Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [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 in the form of incentive stock options, nonqualified stock options, stock appreciation rights (“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 March 31, 2019, there were 61,317 common shares subject to performance-based Restricted Stock Units (“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 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 March 31, 2019, 631,033 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 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 March 31, 2019, 127,200 common shares were available for future grants under the 2017 Non-Employee Director 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. During the three months ended March 31, 2019, the Compensation Committee of the Board of Directors of Park 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 three months ended March 31, 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 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 three months ended March 31, 2019 follows: Common shares subject to PBRSUs and TBRSUs Nonvested at January 1, 2019 152,631 Granted 58,740 Vested (27,719 ) Forfeited — Adjustment for performance conditions of PBRSUs (1) (3,368 ) Nonvested at March 31, 2019 (2) 180,284 (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 March 31, 2019, 165,279 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 amount 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 amount of 12,921 common shares being issued to employees of Park. Share-based compensation expense of $1.4 million and $1.1 million was recognized for the three-month periods ended March 31, 2019 and 2018, respectively. The following table details expected additional share-based compensation expense related to PBRSUs and TBRSUs outstanding as of March 31, 2019: (In thousands) Nine months ending December 31, 2019 $ 3,467 2020 3,606 2021 2,221 2022 918 2023 131 Total $ 10,343

Benefit Plan

Benefit Plan	3 Months Ended
	Mar. 31, 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 either of the three-month periods ended March 31, 2019 and 2018 . The following table shows the components of net periodic pension benefit income: Three Months Ended Affected Line Item in the Consolidated Condensed Statements of Income (In thousands) 2019 2018 Service cost $ 1,468 $ 1,637 Employee benefits Interest cost 1,373 1,309 Other components of net periodic pension benefit income Expected return on plan assets (3,026 ) (3,354 ) Other components of net Recognized net actuarial loss 470 340 Other components of net Net periodic pension benefit expense (income) $ 285 $ (68 ) 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 ended March 31, 2019 and 2018 was as follows: Three Months Ended Affected Line Item in the Consolidated (In thousands) 2019 2018 Service cost $ 201 $ 233 Employee benefits Interest cost 165 117 Miscellaneous expense Total SERP expense $ 366 $ 350

Fair Value

Fair Value	3 Months Ended
	Mar. 31, 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 March 31, 2019 using: (In thousands) Level 1 Level 2 Level 3 Balance at March 31, 2019 Assets Investment securities: U.S. Government sponsored entities’ asset-backed securities $ — $ 977,990 $ — $ 977,990 Equity securities 1,336 — 433 1,769 Mortgage loans held for sale — 4,276 — 4,276 Mortgage IRLCs — 175 — 175 Liabilities Fair value swap $ — $ — $ 226 $ 226 Interest rate swap — 261 — 261 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 either of the three -month periods ended March 31, 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: 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 (IRLCs): 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. Interest rate swap: The fair values of interest rate swaps are based on valuation models using observable market data as of the measurement date (Level 2). The table below presents a reconciliation of the beginning and ending balances of the Level 3 inputs for the three months ended March 31, 2019 and 2018 , for financial instruments measured on a recurring basis and classified as Level 3: Level 3 Fair Value Measurements Three months ended March 31, 2019 and 2018 (In thousands) Equity Securities Fair value swap Balance at January 1, 2019 $ 424 $ (226 ) Total gains/(losses) Included in other income 9 — Balance at March 31, 2019 $ 433 $ (226 ) Balance at January 1, 2018 $ 417 $ (226 ) Total gains/(losses) Included in other comprehensive income 3 — Balance at March 31, 2018 $ 420 $ (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 ("OREO"): Assets acquired through or in lieu of loan foreclosure are initially recorded at fair value less costs to sell when acquired. The carrying value of OREO is not re-measured to fair value on a recurring basis, but is subject to fair value adjustments when the carrying value exceeds the fair value, less estimated selling costs. Fair value is based on recent real estate appraisals and is updated at least annually. These appraisals may utilize a single valuation approach or a combination of approaches including the comparable sales approach and the income approach. Adjustments are routinely made in the appraisal process by the independent appraisers to adjust for differences between the comparable sales and income data available. Such adjustments result in a Level 3 classification of the inputs for determining fair value. Appraisals for both collateral dependent impaired loans and OREO are performed by licensed appraisers. Appraisals are generally obtained to support the fair value of collateral. In general, there are three types of appraisals 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 March 31, 2019 and December 31, 2018, other repossessed assets 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 March 31, 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 to the property's value subsequent to the initial measurement. Fair Value Measurements at March 31, 2019 using: (In thousands) Level 1 Level 2 Level 3 Balance at March 31, 2019 Impaired loans recorded at fair value: Commercial real estate $ — $ — $ 3,691 $ 3,691 Construction real estate — — 1,635 1,635 Residential real estate — — 136 136 Total impaired loans recorded at fair value $ — $ — $ 5,462 $ 5,462 Mortgage servicing rights $ — $ 1,788 $ — $ 1,788 OREO: Commercial real estate — — 2,475 2,475 Construction real estate — — 728 728 Residential real estate — — 620 620 Total OREO recorded at fair value $ — $ — $ 3,823 $ 3,823 Other repossessed assets $ — $ — $ 3,496 $ 3,496 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 Mortgage servicing rights $ — $ 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. March 31, 2019 (In thousands) Recorded Investment Prior Charge-Offs Specific Valuation Allowance Carrying Balance Impaired loans recorded at fair value $ 5,527 $ 3,341 $ 65 $ 5,462 Remaining impaired loans 45,380 7,616 2,403 42,977 Total impaired loans $ 50,907 $ 10,957 $ 2,468 $ 48,439 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 during the three months ended March 31, 2019 and 2018 was $33,000 and $50,000 , respectively. MSRs totaled $10.1 million at March 31, 2019 . Of this $10.1 million MSR carrying balance, $1.8 million was recorded at fair value and included a valuation allowance of $0.3 million . The remaining $8.3 million was recorded at cost, as the fair value of the MSRs exceeded cost at March 31, 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 (income) related to MSRs carried at fair value during the three months ended March 31, 2019 and 2018 was $57,000 and $(305,000) , respectively. Total OREO held by Park at March 31, 2019 and December 31, 2018 was $4.6 million and $4.3 million , respectively. Approximately 83% and 85% of OREO held by Park at March 31, 2019 and December 31, 2018 , respectively, was carried at fair value due to fair value adjustments made subsequent to the initial OREO measurement. At March 31, 2019 and December 31, 2018 , OREO held at fair value, less estimated selling costs, amounted to $3.8 million and $3.7 million , respectively. The net expense related to OREO fair value adjustments was $27,000 and $207,000 for the three -month periods ended March 31, 2019 and 2018 , respectively. Other repossessed assets totaled $3.9 million at March 31, 2019, of which $3.5 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 either of the three -month periods ended March 31, 2019 and 2018 . The following tables present qualitative information about Level 3 fair value measurements for financial instruments measured at fair value on a nonrecurring basis at March 31, 2019 and December 31, 2018 : March 31, 2019 (In thousands) Fair Value Valuation Technique Unobservable Input(s) Range (Weighted Average) Impaired loans: Commercial real estate $ 3,691 Sales comparison approach Adj to comparables 0.0% - 107.5% (34.1%) Income approach Capitalization rate 10.8% (10.8%) Cost approach Accumulated depreciation 4.2% - 90.1% (10.7%) Construction real estate $ 1,635 Sales comparison approach Adj to comparables 1.7% - 60.7% (34.6%) Residential real estate $ 136 Sales comparison approach Adj to comparables 1.0% - 26.4% (10.3%) Other real estate owned: Commercial real estate $ 2,475 Sales comparison approach Adj to comparables 0.9% - 68.4% (28.4%) Income approach Capitalization rate 10.0 - 13.0% (12.7%) Construction real estate $ 728 Sales comparison approach Adj to comparables 0.0% - 45.0% (21.8%) Residential real estate $ 620 Sales comparison approach Adj to comparables 30.4% - 54.6% (42.5%) 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 net asset value ("NAV") practical expedient in accordance with ASC 820. As of March 31, 2019 and December 31, 2018 , Park had Partnership Investments with a NAV of $13.3 million and $11.0 million , respectively. As of March 31, 2019 and December 31, 2018 , Park had $5.4 million and $6.1 million in unfunded commitments related to these Partnership Investments. For the three -month periods ended March 31, 2019 and 2018 , Park had recognized income (expense) of $1.6 million and $(0.3) million , respectively, related to these Partnership Investments. The fair value of certain financial instruments at March 31, 2019 and December 31, 2018 , was as follows: March 31, 2019 Fair Value Measurements (In thousands) Carrying value Level 1 Level 2 Level 3 Total fair value Financial assets: Cash and money market instruments $ 187,479 $ 187,479 $ — $ — $ 187,479 Investment securities (1) 1,349,149 — 1,357,610 — 1,357,610 Other investment securities (2) 1,769 1,336 — 433 1,769 Loans held for sale 4,276 — 4,276 — 4,276 Mortgage IRLCs 175 — 175 — 175 Impaired loans carried at fair value 5,462 — — 5,462 5,462 Other loans, net 5,677,479 — — 5,622,367 5,622,367 Loans receivable, net $ 5,687,392 $ — $ 4,451 $ 5,627,829 $ 5,632,280 Financial liabilities: Time deposits 982,983 — 985,542 — 985,542 Other 2,633 2,633 — — 2,633 Deposits (excluding demand deposits) $ 985,616 $ 2,633 $ 985,542 $ — $ 988,175 Short-term borrowings $ 212,569 $ — $ 212,569 $ — $ 212,569 Long-term debt 375,000 — 377,428 — 377,428 Subordinated notes 15,000 — 12,791 — 12,791 Derivative financial instruments: Fair value swap $ 226 $ — $ — $ 226 $ 226 Interest rate swap 261 — 261 — 261 (1) Includes AFS debt securities and HTM debt securities. (2) Excludes FHLB stock and FRB stock which are carried at their respective redemption values. Additionally, excludes investment securities accounted for at modified cost, as these investments do not have a readily determinable fair value. 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 Total 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.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	3 Months Ended
	Mar. 31, 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 periods ended March 31, 2019 and March 31, 2018 . Three Months Ended Revenue by Operating Segment (in thousands) PNB GFSC All Other Total Income from fiduciary activities Personal trust and agency accounts $ 2,301 $ — $ — $ 2,301 Employee benefit and retirement-related accounts 1,670 — — 1,670 Investment management and investment advisory agency accounts 2,381 — — 2,381 Other 371 — — 371 Service charges on deposit accounts Non-sufficient funds (NSF) fees 1,616 — — 1,616 Demand deposit account (DDA) charges 780 — — 780 Other 163 — — 163 Other service income (1) Credit card 597 3 — 600 HELOC 95 — 4 99 Installment 74 — (4 ) 70 Real estate 1,757 — — 1,757 Commercial 292 — — 292 Debit card fee income 4,369 — — 4,369 Bank owned life insurance income (2) 898 — 108 1,006 ATM fees 440 — — 440 OREO valuation adjustments (2) (27 ) — — (27 ) Loss on sale of OREO, net (12 ) — — (12 ) Gain on equity securities, net (2) 51 — 70 121 Other components of net periodic pension benefit income (2) 1,147 13 23 1,183 Miscellaneous (3) 1,745 16 1,084 2,845 Total other income $ 20,708 $ 32 $ 1,285 $ 22,025 (1) Of the $2.8 million of aggregate revenue included within "Other service income", approximately $1.2 million is within the scope of ASC 606, with the remaining $1.6 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, partnership investment income, and miscellaneous bank fees totaling $2.8 million . Partnership investment income of $1.6 million is out of scope of ASC 606, while the remaining $1.2 million of "Miscellaneous" income is within the scope of ASC 606 . Three Months Ended March 31, 2018 Revenue by Operating Segment (in thousands) PNB GFSC All Other Total Income from fiduciary activities Personal trust and agency accounts $ 2,126 $ — $ — $ 2,126 Employee benefit and retirement-related accounts 1,643 — — 1,643 Investment management and investment advisory agency accounts 2,244 — — 2,244 Other 382 — — 382 Service charges on deposit accounts Non-sufficient funds (NSF) fees 1,834 — — 1,834 Demand deposit account (DDA) charges 926 — — 926 Other 162 — — 162 Other service income (1) Credit card 504 7 — 511 HELOC 99 — — 99 Installment 64 — — 64 Real estate 2,246 — — 2,246 Commercial 242 — 1,010 1,252 Debit card fee income 4,002 — — 4,002 Bank owned life insurance income (2) 922 — 87 1,009 ATM fees 524 — — 524 OREO valuation adjustments (2) (30 ) — (177 ) (207 ) Gain on sale of OREO, net 1,585 — 2,736 4,321 Net loss on the sale of investment securities (2) (2,271 ) — — (2,271 ) Gain on equity securities, net (2) 27 — 3,462 3,489 Other components of net periodic pension benefit income (2) 1,652 19 34 1,705 Miscellaneous (3) 1,032 4 (194 ) 842 Total other income $ 19,915 $ 30 $ 6,958 $ 26,903 (1) Of the $4.2 million of aggregate revenue included within "Other service income", approximately $1.4 million is within the scope of ASC 606, with the remaining $2.8 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, partnership investment income and miscellaneous bank fees totaling $0.8 million . Partnership investment expense of $0.3 million is out of scope of ASC 606, while the remaining $1.1 million "Miscellaneous" income is 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

Subsequent events

Subsequent events	3 Months Ended
	Mar. 31, 2019
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Subsequent Events On April 1, 2019, CAB Financial Corporation, a South Carolina corporation (“CABF”), merged with and into Park National Corporation ("Park"), with Park continuing as the surviving entity pursuant to the Agreement and Plan of Merger and Reorganization, dated as of September 12, 2018, by and between Park and CABF. Immediately following the merger, Carolina Alliance Bank, a South Carolina state chartered bank and a wholly-owned subsidiary of CABF, was merged with and into PNB, with the PNB as the surviving bank. As of March 31, 2019, CABF had $757.1 million in total assets, $590.8 million in total loans and leases, and $631.5 million in total deposits. The acquisition was valued at $126.9 million and resulted in Park issuing 1,037,205 Park common shares and paying $28.6 million in cash in exchange for the CABF common stock as merger consideration. The assets and liabilities of CABF will be recorded on Park's consolidated balance sheet at their preliminary estimated fair values as of April 1, 2019, the acquisition date, and CABF's results of operations will be included in Park's consolidated statement of income from that date. The initial accounting and determination of the fair values of the assets acquired and liabilities assumed in the acquisition was incomplete at the time of the filing of Park's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2019 (the "March 31, 2019 Form 10-Q") due to the timing of the closing of the acquisition in relation to the deadline for the filing of Park's March 31, 2019 Form 10-Q. A more complete disclosure of the business combination is expected to be reported in Park's Quarterly Report on Form 10-Q for the quarterly period ending June 30, 2019. For the three months ended March 31, 2019, Park recorded merger-related expenses of $0.2 million

Business Combinations (Tables)

Business Combinations (Tables)	3 Months Ended
	Mar. 31, 2019
Business Acquisition [Line Items]
Schedule of Business Acquisitions, by Acquisition [Table Text Block]	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 (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
Business Acquisition, Pro Forma Information [Table Text Block]	The following table presents supplemental pro forma information as if the acquisition 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 transaction, 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 transaction been effected on the assumed date. Three months ended March 31, (dollars in thousands, except per share data) 2018 Net interest income $ 68,387 Net income $ 31,723 Basic earnings per share $ 2.02 Diluted earnings per share $ 2.00

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Schedule Of Investment Securities	Investment securities at December 31, 2018 , were as follows: Debt Securities Available-for-Sale (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 Held-to-Maturity (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 March 31, 2019 , were as follows: Debt Securities Available-for-Sale (In thousands) Amortized Cost Gross Unrealized Holding Gains Gross Unrealized Holding Losses Estimated Fair Value U.S. Government sponsored entities' asset-backed securities $ 985,045 $ 4,924 $ 11,979 $ 977,990 Total $ 985,045 $ 4,924 $ 11,979 $ 977,990 Debt Securities Held-to-Maturity (In thousands) Amortized Cost Gross Gross Estimated Fair Value U.S. Government sponsored entities' asset-backed securities $ 46,462 $ 154 $ 339 $ 46,277 Obligations of states and political subdivisions 304,697 8,776 $ 130 313,343 Total $ 351,159 $ 8,930 $ 469 $ 359,620
Schedule Of Unrealized Loss On Securities	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 Available-for-Sale 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 Held-to-Maturity 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 March 31, 2019 , 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 losses Fair value Unrealized/unrecognized Fair value Unrealized/unrecognized Debt Securities Available-for-Sale U.S. Government sponsored entities' asset-backed securities $ — $ — $ 519,644 $ 11,979 $ 519,644 $ 11,979 Total $ — $ — $ 519,644 $ 11,979 $ 519,644 $ 11,979 Debt Securities Held-to-Maturity U.S. Government sponsored entities' asset-backed securities $ — $ — $ 33,392 $ 339 $ 33,392 $ 339 Obligations of states and political subdivisions — $ — 33,298 130 $ 33,298 130 Total $ — $ — $ 66,690 $ 469 $ 66,690 $ 469
Amortized Cost And Estimated Fair Value Of Investments In Debt Securities By Contractual Maturity	The amortized cost and estimated fair value of investments in debt securities at March 31, 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 Available-for-Sale (In thousands) Amortized cost Fair value Tax equivalent yield U.S. Government sponsored entities' asset-backed securities $ 985,045 $ 977,990 2.35 % Securities Held-to-Maturity (In thousands) Amortized cost Fair value Tax equivalent yield (1) Obligations of state and political subdivisions: Due five through ten years $ 4,024 $ 4,098 3.04 % Due over ten years 300,673 309,245 3.69 % Total (1) $ 304,697 $ 313,343 3.68 % U.S. Government sponsored entities' asset-backed securities $ 46,462 $ 46,277 2.83 %

Other Investment Securities (Ta

Other Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2019
Other Investment Securities [Abstract]
Schedule Of Other Investment Securities	The carrying amount of other investment securities at March 31, 2019 and December 31, 2018 was as follows: (In thousands) March 31, 2019 December 31, 2018 FHLB stock $ 37,983 $ 43,388 FRB stock 10,811 8,225 Equity investments carried at fair value 1,769 1,649 Equity investments carried at cost/modified cost (1) 2,589 2,589 Total other investment securities $ 53,152 $ 55,851 (1) There have been no impairments, downward adjustments, or upward adjustments made to equity investments carried at modified cost.

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 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 March 31, 2019 and December 31, 2018 was as follows: March 31, 2019 December 31, 2018 (In thousands) Loan Balance Accrued Interest Receivable Recorded Investment Loan Balance Accrued Interest Receivable Recorded Investment Commercial, financial and agricultural * $ 1,086,690 $ 5,574 $ 1,092,264 $ 1,072,786 $ 4,603 $ 1,077,389 Commercial real estate * 1,326,894 4,829 1,331,723 1,283,045 4,750 1,287,795 Construction real estate: Commercial 168,880 760 169,640 175,300 801 176,101 Mortgage 71,855 189 72,044 70,541 151 70,692 Installment 2,325 9 2,334 2,433 7 2,440 Residential real estate: Commercial 429,637 1,303 430,940 429,730 1,150 430,880 Mortgage 1,127,986 1,801 1,129,787 1,134,278 1,227 1,135,505 HELOC 208,313 1,190 209,503 215,283 1,159 216,442 Installment 13,634 40 13,674 14,327 36 14,363 Consumer 1,302,429 3,854 1,306,283 1,292,136 3,756 1,295,892 Leases 2,117 24 2,141 2,273 26 2,299 Total loans $ 5,740,760 $ 19,573 $ 5,760,333 $ 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 troubled debt restructurings ("TDRs"), and loans past due 90 days or more and still accruing by class of loan as of March 31, 2019 and December 31, 2018 : March 31, 2019 (In thousands) Nonaccrual Loans Accruing TDRs Loans Past Due 90 Days or More and Accruing Total Nonperforming Loans Commercial, financial and agricultural $ 14,678 $ 221 $ 45 $ 14,944 Commercial real estate 28,114 3,024 — 31,138 Construction real estate: Commercial 2,401 478 — 2,879 Mortgage — 8 80 88 Installment 11 8 — 19 Residential real estate: Commercial 1,992 54 — 2,046 Mortgage 16,435 9,010 582 26,027 HELOC 1,848 954 155 2,957 Installment 505 1,174 — 1,679 Consumer 3,191 898 727 4,816 Total loans $ 69,175 $ 15,829 $ 1,589 $ 86,593 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 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 March 31, 2019 and December 31, 2018 . March 31, 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 $ 14,899 $ 14,844 $ 55 $ 15,194 $ 15,120 $ 74 Commercial real estate 31,138 31,138 — 28,426 28,426 — Construction real estate: Commercial 2,879 2,879 — 1,866 1,866 — Mortgage 8 — 8 15 — 15 Installment 19 — 19 28 — 28 Residential real estate: Commercial 2,046 2,046 — 2,732 2,732 — Mortgage 25,445 — 25,445 25,992 — 25,992 HELOC 2,802 — 2,802 3,186 — 3,186 Installment 1,679 — 1,679 1,517 — 1,517 Consumer 4,089 — 4,089 4,220 — 4,220 Total loans $ 85,004 $ 50,907 $ 34,097 $ 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 March 31, 2019 and December 31, 2018 . March 31, 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 $ 4,221 $ 3,488 $ — $ 8,999 $ 3,713 $ — Commercial real estate 29,876 29,429 — 26,663 26,213 — Construction real estate: Commercial 5,693 2,879 — 4,679 1,866 — Residential real estate: Commercial 2,048 1,993 — 2,691 2,374 — With an allowance recorded: Commercial, financial and agricultural 18,238 11,356 2,403 13,736 11,407 2,169 Commercial real estate 1,709 1,709 58 2,255 2,213 86 Construction real estate: Commercial — — — — — — Residential real estate: Commercial 53 53 7 358 358 18 Total $ 61,838 $ 50,907 $ 2,468 $ 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 months ended March 31, 2019 and March 31, 2018 : Three Months Ended Three Months Ended (In thousands) Recorded Investment as of March 31, 2019 Average Recorded Investment Interest Income Recognized Recorded Investment as of March 31, 2018 Average Recorded Investment Interest Income Recognized Commercial, financial and agricultural $ 14,844 $ 14,924 $ 47 $ 27,050 $ 20,078 $ 174 Commercial real estate 31,138 28,851 271 18,983 18,193 202 Construction real estate: Commercial 2,879 2,239 12 1,393 1,377 14 Residential real estate: Commercial 2,046 2,588 20 2,896 11,215 31 Total $ 50,907 $ 48,602 $ 350 $ 50,322 $ 50,863 $ 421
Aging Of Recorded Investment In Past Due Loans	The following tables present the aging of the recorded investment in past due loans as of March 31, 2019 and December 31, 2018 by class of loan. March 31, 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 $ 1,428 $ 2,290 $ 3,718 $ 1,088,546 $ 1,092,264 Commercial real estate 57 3,886 3,943 1,327,780 1,331,723 Construction real estate: Commercial 368 2,299 2,667 166,973 169,640 Mortgage 254 80 334 71,710 72,044 Installment 18 11 29 2,305 2,334 Residential real estate: Commercial 124 873 997 429,943 430,940 Mortgage 9,913 8,524 18,437 1,111,350 1,129,787 HELOC 462 975 1,437 208,066 209,503 Installment 98 338 436 13,238 13,674 Consumer 6,035 1,679 7,714 1,298,569 1,306,283 Leases — — — 2,141 2,141 Total loans $ 18,757 $ 20,955 $ 39,712 $ 5,720,621 $ 5,760,333 (1) Includes an aggregate of $1.6 million of loans past due 90 days or more and accruing. The remaining loans were past due nonaccrual loans. (2) Includes an aggregate off $49.8 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 March 31, 2019 and December 31, 2018 for all commercial loans: March 31, 2019 (In thousands) 5 Rated 6 Rated Nonaccrual and Accruing TDRs Purchase Credit Impaired (1) Pass-Rated Recorded Investment Commercial, financial and agricultural * $ 12,980 $ 543 $ 14,899 $ 330 $ 1,063,512 $ 1,092,264 Commercial real estate * 4,412 9 31,138 3,012 1,293,152 1,331,723 Construction real estate: Commercial 493 2 2,879 — 166,266 169,640 Residential real estate: Commercial 1,761 104 2,046 30 426,999 430,940 Leases — — — — 2,141 2,141 Total commercial loans $ 19,646 $ 658 $ 50,962 $ 3,372 $ 2,952,070 $ 3,026,708 * 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 $924,000 at March 31, 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 March 31, 2019 and March 31, 2018 , as well as the recorded investment of these contracts at March 31, 2019 and March 31, 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 5 $ — $ 472 $ 472 Commercial real estate 2 — 2,215 2,215 Construction real estate: Commercial 1 480 — 480 Mortgage — — — — Installment — — — — Residential real estate: Commercial — — — — Mortgage 8 54 510 564 HELOC 3 — 81 81 Installment 8 94 95 189 Consumer 69 24 535 559 Total loans 96 $ 652 $ 3,908 $ 4,560 Three Months Ended (In thousands) Number of Contracts Accruing Nonaccrual Total Recorded Investment Commercial, financial and agricultural 4 $ — $ 55 $ 55 Commercial real estate 3 — 249 249 Construction real estate: Commercial 1 63 — 63 Mortgage — — — — Installment — — — — Residential real estate: Commercial — — — — Mortgage 9 — 650 650 HELOC 2 251 88 339 Installment 5 102 13 115 Consumer 50 13 351 364 Total loans 74 $ 429 $ 1,406 $ 1,835 Of those loans which were modified and determined to be a TDR during the three -month period ended March 31, 2019 , $0.7 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 March 31, 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 table presents 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 periods ended March 31, 2019 and March 31, 2018 , respectively. For this table, 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 6 $ 153 3 $ 207 Commercial real estate — — 1 114 Construction real estate: Commercial — — — — Mortgage — — — — Installment — — — — Residential real estate: Commercial — — 1 17 Mortgage 3 68 7 536 HELOC 5 68 3 174 Installment 1 28 — — Consumer 40 343 41 329 Leases — — — — Total loans 55 $ 660 56 $ 1,377 Of the $0.7 million in modified TDRs which defaulted during the three -month period ended March 31, 2019 , $9,000 were accruing loans and $0.7 million were nonaccrual loans. Of the $1.4 million in modified TDRs which defaulted during the three -month period ended March 31, 2018 , $72,000 were accruing loans and $1.3 million

Allowance For Loan Losses (Tabl

Allowance For Loan Losses (Tables)	3 Months Ended
	Mar. 31, 2019
Allowance for Loan and Lease Losses Write-offs, Net [Abstract]
Activity In The Allowance For Loan Losses	The activity in the allowance for loan losses for the three -month periods ended March 31, 2019 and March 31, 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 $ 16,777 $ 9,768 $ 4,463 $ 8,731 $ 11,773 $ — $ 51,512 Charge-offs 198 54 — 29 2,706 — 2,987 Recoveries 416 59 88 382 1,400 — 2,345 Net (recoveries)/charge-offs (218 ) (5 ) (88 ) (353 ) 1,306 — 642 Provision 342 420 13 86 1,637 — 2,498 Ending balance $ 17,337 $ 10,193 $ 4,564 $ 9,170 $ 12,104 $ — $ 53,368 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 $ 15,022 $ 9,601 $ 4,430 $ 9,321 $ 11,614 $ — $ 49,988 Charge-offs 649 47 — 116 2,638 — 3,450 Recoveries 652 87 59 360 1,013 — 2,171 Net (recoveries)/charge-offs (3 ) (40 ) (59 ) (244 ) 1,625 — 1,279 (Recovery)/provision (948 ) (153 ) (26 ) (150 ) 1,537 — 260 Ending balance $ 14,077 $ 9,488 $ 4,463 $ 9,415 $ 11,526 $ — $ 48,969
Composition Of The Allowance For Loan Losses	The composition of the allowance for loan losses at March 31, 2019 and December 31, 2018 was as follows: March 31, 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 $ 2,403 $ 58 $ — $ 7 $ — $ — $ 2,468 Collectively evaluated for impairment 14,934 10,135 4,564 9,163 12,104 — 50,900 Acquired with deteriorated credit quality — — — — — — — Total ending allowance balance $ 17,337 $ 10,193 $ 4,564 $ 9,170 $ 12,104 $ — $ 53,368 Loan balance: Loans individually evaluated for impairment $ 14,843 $ 31,113 $ 2,880 $ 2,045 $ — $ — $ 50,881 Loans collectively evaluated for impairment 1,071,519 1,292,777 240,180 1,777,495 1,302,429 2,117 5,686,517 Loans acquired with deteriorated credit quality (1) 328 3,004 — 30 — — 3,362 Total ending loan balance $ 1,086,690 $ 1,326,894 $ 243,060 $ 1,779,570 $ 1,302,429 $ 2,117 $ 5,740,760 Allowance for loan losses as a percentage of loan balance: Loans individually evaluated for impairment 16.19 % 0.19 % — % 0.34 % — % — % 4.85 % Loans collectively evaluated for impairment 1.39 % 0.78 % 1.90 % 0.52 % 0.93 % — % 0.90 % Loans acquired with deteriorated credit quality — % — % — % — % — % — % — % Total 1.60 % 0.77 % 1.88 % 0.52 % 0.93 % — % 0.93 % Recorded investment: Loans individually evaluated for impairment $ 14,844 $ 31,138 $ 2,879 $ 2,046 $ — $ — $ 50,907 Loans collectively evaluated for impairment 1,077,090 1,297,573 241,139 1,781,828 1,306,283 2,141 5,706,054 Loans acquired with deteriorated credit quality (1) 330 3,012 — 30 — — 3,372 Total ending recorded investment $ 1,092,264 $ 1,331,723 $ 244,018 $ 1,783,904 $ 1,306,283 $ 2,141 $ 5,760,333 (1) Excludes loans acquired with deteriorated credit quality which are individually evaluated for impairment due to additional credit deterioration post acquisition. These loans had a balance of $924,000 , a recorded investment of $925,000 , and zero allowance as of March 31, 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 post acquisition. These loans had a balance of $475,000 , a recorded investment of $475,000 , and zero

Goodwill and other intangibles

Goodwill and other intangibles (Tables)	3 Months Ended
	Mar. 31, 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 three months ended March 31, 2019 and 2018. (in thousands) Goodwill Other intangible assets Total December 31, 2017 $ 72,334 $ — $ 72,334 Acquired goodwill and other intangible assets — — — Amortization — — — March 31, 2018 $ 72,334 $ — $ 72,334 December 31, 2018 $ 112,739 $ 6,971 $ 119,710 Acquired goodwill and other intangible assets — — — Amortization — 289 289 March 31, 2019 $ 112,739 $ 6,682 $ 119,421
Intangible Assets Disclosure [Text Block]	The following table shows the balance of acquired intangible assets as of March 31, 2019. Park had no acquired intangible assets as of March 31, 2018. 2019 (in thousands) Gross Carrying Amount Accumulated Amortization Other intangible assets: Core deposit intangibles $ 6,249 $ 867 Trade name intangible 1,300 — Total $ 7,549 $ 867
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	Estimated amortization expense for each of the periods listed below follows: (in thousands) Total Nine months ending December 31, 2019 $ 945 2020 1,149 2021 869 2022 629 2023 521

Investment in Qualified Affor_2

Investment in Qualified Affordable Housing (Tables)	3 Months Ended
	Mar. 31, 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 March 31, 2019 and December 31, 2018. (in thousands) March 31, 2019 December 31, 2018 Affordable housing tax credit investments $ 48,535 $ 50,347 Unfunded commitments 19,624 22,282

Other Real Estate Owned (Tables

Other Real Estate Owned (Tables)	3 Months Ended
	Mar. 31, 2019
Other Real Estate Owned [Abstract]
Schedule of Assets Repossessed or Foreclosed, or loans in process of foreclosure [Table Text Block] [Text Block]	Foreclosed and Repossessed Assets Park typically transfers a loan to other real estate owned ("OREO") at the time that Park takes deed/title to the asset. The carrying amounts of foreclosed properties held at March 31, 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) March 31, 2019 December 31, 2018 OREO: Commercial real estate $ 2,539 $ 2,359 Construction real estate 1,107 1,108 Residential real estate 983 836 Total OREO $ 4,629 $ 4,303 Loans in process of foreclosure: Residential real estate $ 2,789 $ 2,346 In addition to real estate, Park may also repossess different types of collateral. As of March 31, 2019 and December 31, 2018 , Park had $3.9 million and $4.0 million

Loan Servicing (Tables)

Loan Servicing (Tables)	3 Months Ended
	Mar. 31, 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 (In thousands) 2019 2018 Mortgage servicing rights: Carrying amount, net, beginning of period $ 10,178 $ 9,688 Additions 262 328 Amortization (301 ) (352 ) Changes in valuation allowance (57 ) 305 Carrying amount, net, end of period $ 10,082 $ 9,969 Valuation allowance: Beginning of period $ 232 $ 630 Changes in valuation allowance 57 (305 ) End of period $ 289 $ 325

Leases Leases (Tables)

Leases Leases (Tables)	3 Months Ended
	Mar. 31, 2019
Leases [Abstract]
Lease, Cost [Table Text Block]	Other information related to operating leases as of March 31, 2019 was as follows: Three Months Ended (Dollars in thousands) 2019 Lease cost Operating lease cost $ 663 Sublease income (93 ) Total lease cost $ 570 Other information Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 656 Weighted-average remaining lease term - operating leases (years) 6.6 Weighted-average discount rate - operating leases 3.1 %
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	as follows: Three Months Ended (in thousands) 2019 2019 $ 2,025 2020 2,168 2021 1,892 2022 1,797 2023 1,709 Thereafter 3,098 Total undiscounted minimum lease payments $ 12,689 Present value adjustment (1,301 ) Total lease liabilities $ 11,388
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, 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 its 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 (i.e. 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 standard or make the new required lease disclosures for periods prior to the effective date. Upon adoption of this lease guidance on January 1, 2019, Park recorded an initial right-of-use ("ROU") asset of $11.0 million , 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 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 comprise 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 “Other assets" and "Other liabilities", respectively, on Park's consolidated condensed balance sheet. The carrying amount of Park's ROU asset and lease liability at March 31, 2019 was $10.6 million and $11.4 million , respectively. Park's operating lease expense is recorded in "Occupancy expense" on the Company's consolidated condensed statements on income. Other information related to operating leases as of March 31, 2019 was as follows: Three Months Ended (Dollars in thousands) 2019 Lease cost Operating lease cost $ 663 Sublease income (93 ) Total lease cost $ 570 Other information Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 656 Weighted-average remaining lease term - operating leases (years) 6.6 Weighted-average discount rate - operating leases 3.1 % Undiscounted cash flows included in lease liabilities have expected contractual payments as follows: Three Months Ended (in thousands) 2019 2019 $ 2,025 2020 2,168 2021 1,892 2022 1,797 2023 1,709 Thereafter 3,098 Total undiscounted minimum lease payments $ 12,689 Present value adjustment (1,301 ) Total lease liabilities $ 11,388

Repurchase Agreement Borrowin_2

Repurchase Agreement Borrowings (Tables)	3 Months Ended
	Mar. 31, 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 March 31, 2019 and December 31, 2018 : March 31, 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 $ 157,569 $ — $ — $ — $ 157,569 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)	3 Months Ended
	Mar. 31, 2019
Derivative [Line Items]
Schedule of Derivative Instruments [Table Text Block]	Summary information about the interest-rate swaps designated as cash flow hedges as of March 31, 2019 is as follows: (In thousands) March 31, 2019 Notional amounts $ 25,000 Weighted average pay rates 2.595 % Weighted average receive rates 2.765 % Weighted average maturity (years) 3.2 Unrealized losses $ 261
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 accumulated other comprehensive loss and the consolidated condensed statements of income related to the cash flow derivative instruments for the three months ended March 31, 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 $ (206 ) $ — $ —
Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]	The following table reflects the cash flow hedges included in the consolidated condensed balance sheets as of March 31, 2019. (In thousands) March 31, 2019 Notional Amount Fair Value Included in other liabilities: Interest rate swaps related to FHLB advances $ 25,000 $ (261 ) Total included in other liabilities $ 25,000 $ (261 )

Other Comprehensive Income (L_2

Other Comprehensive Income (Loss) Net of Tax (Tables)	3 Months Ended
	Mar. 31, 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 periods ended March 31, 2019 and 2018 : (in thousands) Changes in pension plan assets and benefit obligations Unrealized net holding loss on cash flow hedge Unrealized gains and losses on AFS debt securities Total Beginning balance at January 1, 2019 $ (29,672 ) $ — $ (20,116 ) $ (49,788 ) Other comprehensive (loss) income before reclassifications — (206 ) 14,541 14,335 Net current period other comprehensive (loss) income — (206 ) 14,541 14,335 Ending balance at March 31, 2019 $ (29,672 ) $ (206 ) $ (5,575 ) $ (35,453 ) 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 — — (23,410 ) (23,410 ) Amounts reclassified from accumulated other comprehensive loss — — 2,024 2,024 Net current period other comprehensive loss $ — $ — $ (21,386 ) $ (21,386 ) Ending balance at March 31, 2018 $ (26,701 ) $ — $ (25,940 ) $ (52,641 )

Earnings Per Common Share (Tabl

Earnings Per Common Share (Tables)	3 Months Ended
	Mar. 31, 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 months ended March 31, 2019 and 2018 . Three Months Ended (In thousands, except share and per common share data) 2019 2018 Numerator: Net income $ 25,455 $ 31,123 Denominator: Weighted-average common shares outstanding 15,651,541 15,288,332 Effect of dilutive performance-based restricted stock units ("PBRSUs") and time-based restricted stock units ("TBRSUs") 93,236 142,996 Weighted-average common shares outstanding adjusted for the effect of dilutive PBRSUs and TBRSUs 15,744,777 15,431,328 Earnings per common share: Basic earnings per common share $ 1.63 $ 2.04 Diluted earnings per common share $ 1.62 $ 2.02

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2019
Segment Reporting [Abstract]
Schedule Of Operating Results By Segment	Operating Results for the three months ended March 31, 2019 (In thousands) PNB GFSC All Other Total Net interest income $ 66,282 $ 1,325 $ 169 $ 67,776 Provision for (recovery of) loan losses 2,440 145 (87 ) 2,498 Other income 20,708 32 1,285 22,025 Other expense 51,974 845 4,008 56,827 Income (loss) before income taxes $ 32,576 $ 367 $ (2,467 ) $ 30,476 Income tax expense (benefit) 5,884 80 (943 ) 5,021 Net income (loss) $ 26,692 $ 287 $ (1,524 ) $ 25,455 Assets (as of March 31, 2019) $ 7,801,148 $ 30,238 $ 20,860 $ 7,852,246 Operating Results for the three months ended March 31, 2018 (In thousands) PNB GFSC All Other Total Net interest income $ 61,441 $ 1,305 $ 2,104 $ 64,850 (Recovery of) provision for loan losses (67 ) 503 (176 ) 260 Other income 19,915 30 6,958 26,903 Other expense 49,001 760 4,547 54,308 Income before income taxes $ 32,422 $ 72 $ 4,691 $ 37,185 Income tax expense 5,677 15 370 6,062 Net income $ 26,745 $ 57 $ 4,321 $ 31,123 Assets (as of March 31, 2018) $ 7,455,518 $ 30,553 $ 32,899 $ 7,518,970

Share Based Compensation (Table

Share Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]	A summary of changes in the common shares subject to nonvested PBRSUs and TBRSUs for the three months ended March 31, 2019 follows: Common shares subject to PBRSUs and TBRSUs Nonvested at January 1, 2019 152,631 Granted 58,740 Vested (27,719 ) Forfeited — Adjustment for performance conditions of PBRSUs (1) (3,368 ) Nonvested at March 31, 2019 (2) 180,284
Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block]	The following table details expected additional share-based compensation expense related to PBRSUs and TBRSUs outstanding as of March 31, 2019: (In thousands) Nine months ending December 31, 2019 $ 3,467 2020 3,606 2021 2,221 2022 918 2023 131 Total $ 10,343

Benefit Plan (Tables)

Benefit Plan (Tables)	3 Months Ended
	Mar. 31, 2019
Defined Benefit Plan [Abstract]
Components Of Net Periodic Benefit Expense	The following table shows the components of net periodic pension benefit income: Three Months Ended Affected Line Item in the Consolidated Condensed Statements of Income (In thousands) 2019 2018 Service cost $ 1,468 $ 1,637 Employee benefits Interest cost 1,373 1,309 Other components of net periodic pension benefit income Expected return on plan assets (3,026 ) (3,354 ) Other components of net Recognized net actuarial loss 470 340 Other components of net Net periodic pension benefit expense (income) $ 285 $ (68 ) 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 ended March 31, 2019 and 2018 was as follows: Three Months Ended Affected Line Item in the Consolidated (In thousands) 2019 2018 Service cost $ 201 $ 233 Employee benefits Interest cost 165 117 Miscellaneous expense Total SERP expense $ 366 $ 350

Fair Value (Tables)

Fair Value (Tables)	3 Months Ended
	Mar. 31, 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 March 31, 2019 using: (In thousands) Level 1 Level 2 Level 3 Balance at March 31, 2019 Assets Investment securities: U.S. Government sponsored entities’ asset-backed securities $ — $ 977,990 $ — $ 977,990 Equity securities 1,336 — 433 1,769 Mortgage loans held for sale — 4,276 — 4,276 Mortgage IRLCs — 175 — 175 Liabilities Fair value swap $ — $ — $ 226 $ 226 Interest rate swap — 261 — 261 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 table below presents a reconciliation of the beginning and ending balances of the Level 3 inputs for the three months ended March 31, 2019 and 2018 , for financial instruments measured on a recurring basis and classified as Level 3: Level 3 Fair Value Measurements Three months ended March 31, 2019 and 2018 (In thousands) Equity Securities Fair value swap Balance at January 1, 2019 $ 424 $ (226 ) Total gains/(losses) Included in other income 9 — Balance at March 31, 2019 $ 433 $ (226 ) Balance at January 1, 2018 $ 417 $ (226 ) Total gains/(losses) Included in other comprehensive income 3 — Balance at March 31, 2018 $ 420 $ (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 March 31, 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 to the property's value subsequent to the initial measurement. Fair Value Measurements at March 31, 2019 using: (In thousands) Level 1 Level 2 Level 3 Balance at March 31, 2019 Impaired loans recorded at fair value: Commercial real estate $ — $ — $ 3,691 $ 3,691 Construction real estate — — 1,635 1,635 Residential real estate — — 136 136 Total impaired loans recorded at fair value $ — $ — $ 5,462 $ 5,462 Mortgage servicing rights $ — $ 1,788 $ — $ 1,788 OREO: Commercial real estate — — 2,475 2,475 Construction real estate — — 728 728 Residential real estate — — 620 620 Total OREO recorded at fair value $ — $ — $ 3,823 $ 3,823 Other repossessed assets $ — $ — $ 3,496 $ 3,496 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 Mortgage servicing rights $ — $ 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. March 31, 2019 (In thousands) Recorded Investment Prior Charge-Offs Specific Valuation Allowance Carrying Balance Impaired loans recorded at fair value $ 5,527 $ 3,341 $ 65 $ 5,462 Remaining impaired loans 45,380 7,616 2,403 42,977 Total impaired loans $ 50,907 $ 10,957 $ 2,468 $ 48,439 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 March 31, 2019 and December 31, 2018 : March 31, 2019 (In thousands) Fair Value Valuation Technique Unobservable Input(s) Range (Weighted Average) Impaired loans: Commercial real estate $ 3,691 Sales comparison approach Adj to comparables 0.0% - 107.5% (34.1%) Income approach Capitalization rate 10.8% (10.8%) Cost approach Accumulated depreciation 4.2% - 90.1% (10.7%) Construction real estate $ 1,635 Sales comparison approach Adj to comparables 1.7% - 60.7% (34.6%) Residential real estate $ 136 Sales comparison approach Adj to comparables 1.0% - 26.4% (10.3%) Other real estate owned: Commercial real estate $ 2,475 Sales comparison approach Adj to comparables 0.9% - 68.4% (28.4%) Income approach Capitalization rate 10.0 - 13.0% (12.7%) Construction real estate $ 728 Sales comparison approach Adj to comparables 0.0% - 45.0% (21.8%) Residential real estate $ 620 Sales comparison approach Adj to comparables 30.4% - 54.6% (42.5%) 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 March 31, 2019 and December 31, 2018 , was as follows: March 31, 2019 Fair Value Measurements (In thousands) Carrying value Level 1 Level 2 Level 3 Total fair value Financial assets: Cash and money market instruments $ 187,479 $ 187,479 $ — $ — $ 187,479 Investment securities (1) 1,349,149 — 1,357,610 — 1,357,610 Other investment securities (2) 1,769 1,336 — 433 1,769 Loans held for sale 4,276 — 4,276 — 4,276 Mortgage IRLCs 175 — 175 — 175 Impaired loans carried at fair value 5,462 — — 5,462 5,462 Other loans, net 5,677,479 — — 5,622,367 5,622,367 Loans receivable, net $ 5,687,392 $ — $ 4,451 $ 5,627,829 $ 5,632,280 Financial liabilities: Time deposits 982,983 — 985,542 — 985,542 Other 2,633 2,633 — — 2,633 Deposits (excluding demand deposits) $ 985,616 $ 2,633 $ 985,542 $ — $ 988,175 Short-term borrowings $ 212,569 $ — $ 212,569 $ — $ 212,569 Long-term debt 375,000 — 377,428 — 377,428 Subordinated notes 15,000 — 12,791 — 12,791 Derivative financial instruments: Fair value swap $ 226 $ — $ — $ 226 $ 226 Interest rate swap 261 — 261 — 261 (1) Includes AFS debt securities and HTM debt securities. (2) Excludes FHLB stock and FRB stock which are carried at their respective redemption values. Additionally, excludes investment securities accounted for at modified cost, as these investments do not have a readily determinable fair value. 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 Total 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.

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	3 Months Ended
	Mar. 31, 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 $ 2,301 $ — $ — $ 2,301 Employee benefit and retirement-related accounts 1,670 — — 1,670 Investment management and investment advisory agency accounts 2,381 — — 2,381 Other 371 — — 371 Service charges on deposit accounts Non-sufficient funds (NSF) fees 1,616 — — 1,616 Demand deposit account (DDA) charges 780 — — 780 Other 163 — — 163 Other service income (1) Credit card 597 3 — 600 HELOC 95 — 4 99 Installment 74 — (4 ) 70 Real estate 1,757 — — 1,757 Commercial 292 — — 292 Debit card fee income 4,369 — — 4,369 Bank owned life insurance income (2) 898 — 108 1,006 ATM fees 440 — — 440 OREO valuation adjustments (2) (27 ) — — (27 ) Loss on sale of OREO, net (12 ) — — (12 ) Gain on equity securities, net (2) 51 — 70 121 Other components of net periodic pension benefit income (2) 1,147 13 23 1,183 Miscellaneous (3) 1,745 16 1,084 2,845 Total other income $ 20,708 $ 32 $ 1,285 $ 22,025 (1) Of the $2.8 million of aggregate revenue included within "Other service income", approximately $1.2 million is within the scope of ASC 606, with the remaining $1.6 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, partnership investment income, and miscellaneous bank fees totaling $2.8 million . Partnership investment income of $1.6 million is out of scope of ASC 606, while the remaining $1.2 million of "Miscellaneous" income is within the scope of ASC 606 . Three Months Ended March 31, 2018 Revenue by Operating Segment (in thousands) PNB GFSC All Other Total Income from fiduciary activities Personal trust and agency accounts $ 2,126 $ — $ — $ 2,126 Employee benefit and retirement-related accounts 1,643 — — 1,643 Investment management and investment advisory agency accounts 2,244 — — 2,244 Other 382 — — 382 Service charges on deposit accounts Non-sufficient funds (NSF) fees 1,834 — — 1,834 Demand deposit account (DDA) charges 926 — — 926 Other 162 — — 162 Other service income (1) Credit card 504 7 — 511 HELOC 99 — — 99 Installment 64 — — 64 Real estate 2,246 — — 2,246 Commercial 242 — 1,010 1,252 Debit card fee income 4,002 — — 4,002 Bank owned life insurance income (2) 922 — 87 1,009 ATM fees 524 — — 524 OREO valuation adjustments (2) (30 ) — (177 ) (207 ) Gain on sale of OREO, net 1,585 — 2,736 4,321 Net loss on the sale of investment securities (2) (2,271 ) — — (2,271 ) Gain on equity securities, net (2) 27 — 3,462 3,489 Other components of net periodic pension benefit income (2) 1,652 19 34 1,705 Miscellaneous (3) 1,032 4 (194 ) 842 Total other income $ 19,915 $ 30 $ 6,958 $ 26,903 (1) Of the $4.2 million of aggregate revenue included within "Other service income", approximately $1.4 million is within the scope of ASC 606, with the remaining $2.8 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, partnership investment income and miscellaneous bank fees totaling $0.8 million . Partnership investment expense of $0.3 million is out of scope of ASC 606, while the remaining $1.1 million "Miscellaneous" income is within the scope of ASC 606 .

Recent Accounting Pronounceme_2

Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	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)
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
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
Accumulated Other Comprehensive Income (loss) [Member] | Adjustments for New Accounting Pronouncement [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption		(3,806)
Retained Earnings [Member] | Adjustments for New Accounting Pronouncement [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption		$ 3,806
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

Business Combinations (Details)

Business Combinations (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Jul. 01, 2018
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value				$ 272,753,000
Business Acquisition, Share Price				$ 1.08
Business Combination, Consideration Transferred [Abstract]
Payments to Acquire Businesses, Gross			$ 30,684,000
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable			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			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 Acquisition, Transaction Costs	$ 71,000	$ 169,000
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents				$ 42,954,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities				1,954,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables				272,753,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment [Abstract]				940,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets				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				284,231,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets				332,283,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities				2,254,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles				6,249,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities				286,485,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net				45,798,000
Business Acquisition, Pro Forma Information [Abstract]
Business Acquisition, Pro Forma Net Income (Loss)		$ 31,723,000
Business Acquisition, Pro Forma Earnings Per Share, Basic		$ 2.02
Business Acquisition, Pro Forma Earnings Per Share, Diluted		$ 2
Business Acquisition, Pro Forma Revenue		$ 68,387,000
Business Combination, Acquired Receivables, Gross Contractual Amount				$ 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	$ 0	$ 0	$ 40,405,000
Common Stock [Member]
Business Acquisition [Line Items]
Business Acquisition, Share Price				$ 0.01023
Commercial, Financial, and Agricultural [Member]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value				$ 19,138,000
Business Acquisition, Pro Forma Information [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount				19,246,000
Commercial Real Estate [Member]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value				117,638,000
Business Acquisition, Pro Forma Information [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount				119,434,000
Construction Real Estate Commercial [Domain]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value				22,235,000
Business Acquisition, Pro Forma Information [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount				22,494,000
Construction Real Estate - Mortgage [Member]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value				8,111,000
Business Acquisition, Pro Forma Information [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount				8,391,000
Residential Real Estate Commercial [Member]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value				14,797,000
Business Acquisition, Pro Forma Information [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount				14,798,000
Residential Real Estate - Mortgage [Member]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value				48,714,000
Business Acquisition, Pro Forma Information [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount				50,295,000
Residential Real Estate Home Equity Line Of Credit [Member]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value				36,688,000
Business Acquisition, Pro Forma Information [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount				37,651,000
Consumer Loan [Member]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value				539,000
Business Acquisition, Pro Forma Information [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount				541,000
Purchased credit impaired [Member]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value				4,893,000
Business Acquisition, Pro Forma Information [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount				5,069,000
Performing Financial Instruments [Member]
Business Acquisition [Line Items]
Business Combination, Acquired Receivable, Fair Value				267,900,000
Business Acquisition, Pro Forma Information [Abstract]
Business Combination, Acquired Receivables, Gross Contractual Amount				$ 273,700,000

Investment Securities (Narrativ

Investment Securities (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Schedule of Investments [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Debt Securities, Realized Gain (Loss)	$ 0
Available-for-sale Securities, Gross Realized Losses		$ 2,600,000
Debt securities held-to-maturity, at amortized cost (fair value of $359,620 and $351,422 at March 31, 2019 and December 31, 2018, respectively)	351,159,000		$ 351,808,000
Debt Securities, Held-to-maturity, Sold, Realized Gain (Loss)		$ 291,000
percent of held to securities sold paid down		96.30%
Other than Temporary Impairment Losses, Investments	$ 0	$ 0
Available-for-sale Securities, Gross Realized Gains		60,000
Asset backed securities mortgage portfolio, term	15 years
Debt Securities, Available-for-sale, Amortized Cost	$ 985,045,000		1,028,883,000
Securities sold at a gain [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost		245,000,000
Securities sold at a gain [Member]
Schedule of Investments [Line Items]
Debt securities held-to-maturity, at amortized cost (fair value of $359,620 and $351,422 at March 31, 2019 and December 31, 2018, respectively)		7,400,000
Debt Securities, Available-for-sale, Amortized Cost		$ 2,000,000
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 $359,620 and $351,422 at March 31, 2019 and December 31, 2018, respectively)	46,462,000		46,530,000
Debt Securities, Available-for-sale, Amortized Cost	985,045,000		1,028,883,000
Collateral Pledged [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Restricted	$ 597,000,000		$ 634,000,000

Investment Securities (Schedule

Investment Securities (Schedule Of Investment Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 985,045	$ 1,028,883
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	4,924	453
Securities Available-for-Sale, Gross Unrealized Holding Losses	11,979	25,915
Debt Securities, Available-for-sale	977,990	1,003,421
Securities Held-to-Maturity, Amortized Cost	351,159	351,808
Securities Held-to-Maturity, Gross Unrecognized Holding Gains	8,930	3,289
Securities Held-to-Maturity, Gross Unrecognized Holding Losses	469	3,675
Securities held-to-maturity, fair value	359,620	351,422
U.S. Government Sponsored Entities Asset-Backed Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	985,045	1,028,883
Debt Securities, Available-for-sale, Accumulated Gross Unrealized Gain, before Tax	4,924	453
Securities Available-for-Sale, Gross Unrealized Holding Losses	11,979	25,915
Debt Securities, Available-for-sale	977,990	1,003,421
Securities Held-to-Maturity, Amortized Cost	46,462	46,530
Securities Held-to-Maturity, Gross Unrecognized Holding Gains	154	87
Securities Held-to-Maturity, Gross Unrecognized Holding Losses	339	1,003
Securities held-to-maturity, fair value	46,277	45,614
US States and Political Subdivisions Debt Securities [Member]
Schedule of Investments [Line Items]
Securities Held-to-Maturity, Amortized Cost	304,697	305,278
Securities Held-to-Maturity, Gross Unrecognized Holding Gains	8,776	3,202
Securities Held-to-Maturity, Gross Unrecognized Holding Losses	130	2,672
Securities held-to-maturity, fair value	$ 313,343	$ 305,808

Investment Securities (Schedu_2

Investment Securities (Schedule Of Unrealized Loss On Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Schedule of Investments [Line Items]
Securities Available-for-Sale, Less than 12 months, Fair value		$ 506,280
Securities Available-for-Sale, Less than 12 months, Unrealized losses		5,998
Securities Available-for-Sale, 12 months or longer, Fair value	$ 519,644	449,569
Securities Available-for-Sale, 12 months or longer, Unrealized losses	11,979	19,917
Securities Available-for-Sale, Fair value, Total	519,644	955,849
Securities Available-for-Sale, Unrealized losses, Total	11,979	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	66,690	77,654
Securities Held-to-Maturity, 12 months or longer, Unrealized losses	469	1,742
Securities Held-to-Maturity, Fair value, Total	66,690	202,270
Securities Held-to-Maturity, Unrealized losses, Total	469	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		506,280
Securities Available-for-Sale, Less than 12 months, Unrealized losses		5,998
Securities Available-for-Sale, 12 months or longer, Fair value	519,644	449,569
Securities Available-for-Sale, 12 months or longer, Unrealized losses	11,979	19,917
Securities Available-for-Sale, Fair value, Total	519,644	955,849
Securities Available-for-Sale, Unrealized losses, Total	11,979	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	33,392	6,931
Securities Held-to-Maturity, 12 months or longer, Unrealized losses	339	165
Securities Held-to-Maturity, Fair value, Total	33,392	39,587
Securities Held-to-Maturity, Unrealized losses, Total	339	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	33,298	70,723
Securities Held-to-Maturity, 12 months or longer, Unrealized losses	130	1,577
Securities Held-to-Maturity, Fair value, Total	33,298	162,683
Securities Held-to-Maturity, Unrealized losses, Total	$ 130	$ 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	Mar. 31, 2019	Dec. 31, 2018
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 985,045	$ 1,028,883
Securities Available-for-Sale, Total Fair value	977,990	1,003,421
Securities Held-to-Maturity, Amortized Cost	351,159	351,808
Securities held-to-maturity, fair value	359,620	351,422
US States and Political Subdivisions Debt Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Amortized Cost	4,024
Debt Securities, Held-to-maturity, Maturity, Allocated and Single Maturity Date, after Five Through Ten Years, Fair Value	$ 4,098
Held to Maturity Securities weighted avg yield five through ten	3.04%
Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Net Carrying Amount	$ 300,673
Held-to-maturity Securities, Debt Maturities, Year Six Through Ten, Fair Value	$ 309,245
Held to Maturity Securities Debt Maturities Years Over Ten weighted avg yield	3.69%
Securities Held-to-Maturity, Amortized Cost	$ 304,697	305,278
Securities held-to-maturity, fair value	$ 313,343	305,808
Held to Maturity Securities weighted avg yield	3.68%
U.S. Government Sponsored Entities Asset-Backed Securities [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 985,045	1,028,883
Securities Available-for-Sale, Total Fair value	$ 977,990	1,003,421
Available for Sale Securities Weighted Avg Yield	2.35%
Securities Held-to-Maturity, Amortized Cost	$ 46,462	46,530
Securities held-to-maturity, fair value	$ 46,277	$ 45,614
Held to Maturity Securities weighted avg yield	2.83%

Other Investment Securities (Sc

Other Investment Securities (Schedule Of Other Investment Securities) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Schedule of Investments [Line Items]
Federal Home Loan Bank Stock	$ 37,983,000		$ 43,388,000
Federal Reserve Bank Stock	10,811,000		8,225,000
Equity investments carried at fair value	1,769,000		1,649,000
Equity Method Investments	2,589,000		2,589,000
Other investment securities	53,152,000		$ 55,851,000
Gain on equity securities, net	$ 121,000	$ 3,489,000
Equity Securities, FV-NI, Unrealized Gain		(3,500,000)
Investments [Member]
Schedule of Investments [Line Items]
Gain on equity securities, net		$ (11,000)

Loans (Narrative) (Details)

Loans (Narrative) (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Jul. 01, 2018
Financing Receivable, Recorded Investment [Line Items]
Business Combination, Acquired Receivable, Fair Value				$ 272,753,000
Business Combination, Acquired Receivables, Gross Contractual Amount				277,919,000
Loans and Leases Receivable, Deferred Income	$ 12,300,000		$ 12,500,000
Goodwill, Purchase Accounting Adjustments	4,200,000		4,400,000
Troubled Debt Restructuring, Classification removed	23,000	$ 324,000
Partial Charge-Offs On Impaired Loans	10,957,000		11,246,000
Impaired Financing Receivable, Related Allowance	2,468,000		2,273,000
Recorded investment, related to loans	13,100,000		14,000,000
Troubled Debt Restructuring Included In Nonaccrual Loans	23,700,000		24,600,000
TDRs included in accruing loan totals	15,800,000		15,200,000
Nonaccrual Trouble Debt Restructuring Current	18,000,000		19,200,000
Commitments to lend additional funds to borrowers whose terms had been modified in a TDR	200,000		300,000
Specific reserves related to troubled debt restructuring	1,300,000		1,200,000
Additional Specific Reserves Related To Troubled Debt Restructuring	0	10,000
Financing Receivable, Modifications, Recorded Investment, During Period	4,560,000	1,835,000
Loan Modifications on Nonacrrual status	$ 700,000	500,000
Loan past due period before entering default status	30 days
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	$ 700,000	1,400,000
Deposit Liabilities Reclassified as Loans Receivable	2,200,000		2,300,000
Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Recorded Investment [Line Items]
Partial Charge-Offs On Impaired Loans	4,100,000		8,800,000
Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Recorded Investment [Line Items]
Partial Charge-Offs On Impaired Loans	6,900,000		2,400,000
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	2,215,000	249,000
Commercial Real Estate [Member] | Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Related Allowance	0		0
Commercial Real Estate [Member] | Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Related Allowance	58,000		86,000
Accruing [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	652,000	429,000
Loans modified during period	9,000	72,000
Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	3,908,000	1,406,000
Loans modified during period	700,000	1,300,000
Nonaccrual [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	2,215,000	249,000
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	7,200,000	$ 6,000,000
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	0
Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment [Line Items]
Business Combination, Acquired Receivable, Fair Value	4,300,000		4,400,000	4,900,000
Business Combination, Acquired Receivables, Gross Contractual Amount	$ 4,500,000		$ 4,600,000	$ 5,100,000

Loans (Composition Of Loan Port

Loans (Composition Of Loan Portfolio By Class Of Loan) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Recorded Investment		$ 50,907	$ 50,322	$ 48,144
Loan balance		5,740,760		5,692,132
Accrued interest receivable		24,299		22,974
Recorded Investment		5,760,333		5,709,798
Impaired Financing Receivable, Average Recorded Investment		48,602	50,863
Impaired Financing Receivable, Interest Income, Cash Basis Method		350	421
Construction Real Estate Commercial [Domain]
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Recorded Investment		2,879	1,393
Loan balance		168,880		175,300
Accrued interest receivable		760		801
Recorded Investment		169,640		176,101
Impaired Financing Receivable, Average Recorded Investment		2,239	1,377
Impaired Financing Receivable, Interest Income, Cash Basis Method		12	14
Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Recorded Investment		14,844	27,050
Impaired Financing Receivable, Average Recorded Investment		14,924	20,078
Impaired Financing Receivable, Interest Income, Cash Basis Method		47	174
Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan balance		71,855		70,541
Accrued interest receivable		189		151
Recorded Investment		72,044		70,692
Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan balance		2,325		2,433
Accrued interest receivable		9		7
Recorded Investment		2,334		2,440
Residential Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Recorded Investment		2,046	2,896
Loan balance		429,637		429,730
Accrued interest receivable		1,303		1,150
Recorded Investment		430,940		430,880
Impaired Financing Receivable, Average Recorded Investment		2,588	11,215
Impaired Financing Receivable, Interest Income, Cash Basis Method		20	31
Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan balance		1,127,986		1,134,278
Accrued interest receivable		1,801		1,227
Recorded Investment		1,129,787		1,135,505
Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan balance		208,313		215,283
Accrued interest receivable		1,190		1,159
Recorded Investment		209,503		216,442
Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan balance		13,634		14,327
Accrued interest receivable		40		36
Recorded Investment		13,674		14,363
Loans Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Accrued interest receivable		19,573		17,666
Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan balance	[1]	1,086,690		1,072,786
Accrued interest receivable	[1]	5,574		4,603
Recorded Investment	[1]	1,092,264		1,077,389
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Recorded Investment		31,138	18,983
Loan balance	[1]	1,326,894		1,283,045
Accrued interest receivable	[1]	4,829		4,750
Recorded Investment	[1]	1,331,723		1,287,795
Impaired Financing Receivable, Average Recorded Investment		28,851	18,193
Impaired Financing Receivable, Interest Income, Cash Basis Method		271	$ 202
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan balance		1,302,429		1,292,136
Accrued interest receivable		3,854		3,756
Recorded Investment		1,306,283		1,295,892
Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Loan balance		2,117		2,273
Accrued interest receivable		24		26
Recorded Investment		$ 2,141		$ 2,299
[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
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Recorded Investment	$ 50,907	$ 50,322	$ 48,144
Nonaccrual loans	69,175		67,954
Accruing restructured loans	15,829		15,222
Loans past due 90 days or more and accruing	1,589		2,302
Total nonperforming loans	86,593		85,478
Impaired Financing Receivable, Average Recorded Investment	48,602	50,863
Impaired Financing Receivable, Interest Income, Cash Basis Method	350	421
Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Recorded Investment	14,844	27,050
Nonaccrual loans	14,678		14,998
Accruing restructured loans	221		196
Loans past due 90 days or more and accruing	45		10
Total nonperforming loans	14,944		15,204
Impaired Financing Receivable, Average Recorded Investment	14,924	20,078
Impaired Financing Receivable, Interest Income, Cash Basis Method	47	174
Construction Real Estate Commercial [Domain]
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Recorded Investment	2,879	1,393
Nonaccrual loans	2,401		1,866
Accruing restructured loans	478		0
Loans past due 90 days or more and accruing	0		0
Total nonperforming loans	2,879		1,866
Impaired Financing Receivable, Average Recorded Investment	2,239	1,377
Impaired Financing Receivable, Interest Income, Cash Basis Method	12	14
Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	0
Accruing restructured loans	8		15
Loans past due 90 days or more and accruing	80		20
Total nonperforming loans	88		35
Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	11		19
Accruing restructured loans	8		9
Loans past due 90 days or more and accruing	0		0
Total nonperforming loans	19		28
Residential Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Recorded Investment	2,046	2,896
Nonaccrual loans	1,992		2,610
Accruing restructured loans	54		122
Loans past due 90 days or more and accruing	0
Total nonperforming loans	2,046		2,732
Impaired Financing Receivable, Average Recorded Investment	2,588	11,215
Impaired Financing Receivable, Interest Income, Cash Basis Method	20	31
Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	16,435		16,892
Accruing restructured loans	9,010		9,100
Loans past due 90 days or more and accruing	582		1,124
Total nonperforming loans	26,027		27,116
Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	1,848		2,158
Accruing restructured loans	954		1,028
Loans past due 90 days or more and accruing	155		9
Total nonperforming loans	2,957		3,195
Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	505		468
Accruing restructured loans	1,174		1,049
Loans past due 90 days or more and accruing	0		24
Total nonperforming loans	1,679		1,541
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Impaired Financing Receivable, Recorded Investment	31,138	18,983
Nonaccrual loans	28,114		25,566
Accruing restructured loans	3,024		2,860
Loans past due 90 days or more and accruing	0
Total nonperforming loans	31,138		28,426
Impaired Financing Receivable, Average Recorded Investment	28,851	18,193
Impaired Financing Receivable, Interest Income, Cash Basis Method	271	$ 202
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Nonaccrual loans	3,191		3,377
Accruing restructured loans	898		843
Loans past due 90 days or more and accruing	727		1,115
Total nonperforming loans	$ 4,816		$ 5,335

Loans (Loans Individually And C

Loans (Loans Individually And Collectively Evaluated For Impairment) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	$ 2,468	$ 2,273
Nonaccrual and accruing restructured loans	85,004	83,176
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	50,907	48,144
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	34,097	35,032
Partial Charge-Offs On Impaired Loans	10,957	11,246
Commercial Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	14,899	15,194
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	14,844	15,120
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	55	74
Construction Real Estate Commercial [Domain]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	2,879	1,866
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	2,879	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	8	15
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	0	0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	8	15
Construction Real Estate - Installment [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	19	28
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	0	0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	19	28
Residential Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	2,046	2,732
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	2,046	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	25,445	25,992
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	0	0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	25,445	25,992
Residential Real Estate - HELOC [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	2,802	3,186
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	0	0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	2,802	3,186
Residential Real Estate - Installment [Member]
Financing Receivable, Impaired [Line Items]
Nonaccrual and accruing restructured loans	1,679	1,517
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	0	0
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	1,679	1,517
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	58	86
Nonaccrual and accruing restructured loans	31,138	28,426
Nonaccrual and accruing restructured loans, loans individually evaluated for impairment	31,138	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	4,089	4,220
Nonaccrual and accruing restructured loans, loans collectively evaluated for impairment	4,089	4,220
Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Partial Charge-Offs On Impaired Loans	$ 4,100	$ 8,800

Loans (Loans Individually Evalu

Loans (Loans Individually Evaluated For Impairment By Class Of Loans) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	$ 61,838		$ 59,381
Recorded investment	50,907	$ 50,322	48,144
Allowance for loan losses allocated	2,468		2,273
Impaired Financing Receivable, Average Recorded Investment	48,602	50,863
Impaired Financing Receivable, Interest Income, Cash Basis Method	350	421
Commercial Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	14,844	27,050
Impaired Financing Receivable, Average Recorded Investment	14,924	20,078
Impaired Financing Receivable, Interest Income, Cash Basis Method	47	174
Commercial Financial And Agricultural [Member] | Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	4,221		8,999
Recorded investment	3,488		3,713
Allowance for loan losses allocated	0		0
Commercial Financial And Agricultural [Member] | Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	18,238		13,736
Recorded investment	11,356		11,407
Allowance for loan losses allocated	2,403		2,169
Construction Real Estate Commercial [Domain]
Financing Receivable, Impaired [Line Items]
Recorded investment	2,879	1,393
Impaired Financing Receivable, Average Recorded Investment	2,239	1,377
Impaired Financing Receivable, Interest Income, Cash Basis Method	12	14
Construction Real Estate Commercial [Domain] | Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	5,693		4,679
Recorded investment	2,879		1,866
Allowance for loan losses allocated	0		0
Residential Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	2,046	2,896
Impaired Financing Receivable, Average Recorded Investment	2,588	11,215
Impaired Financing Receivable, Interest Income, Cash Basis Method	20	31
Residential Real Estate Commercial [Member] | Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	2,048		2,691
Recorded investment	1,993		2,374
Allowance for loan losses allocated	0		0
Residential Real Estate Commercial [Member] | Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	53		358
Recorded investment	53		358
Allowance for loan losses allocated	7		18
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	31,138	18,983
Impaired Financing Receivable, Average Recorded Investment	28,851	18,193
Impaired Financing Receivable, Interest Income, Cash Basis Method	271	$ 202
Commercial Real Estate [Member] | Financing Receivable With No Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	29,876		26,663
Recorded investment	29,429		26,213
Allowance for loan losses allocated	0		0
Commercial Real Estate [Member] | Financing Receivable With A Related Allowance Recorded [Member]
Financing Receivable, Impaired [Line Items]
Unpaid principal balance	1,709		2,255
Recorded investment	1,709		2,213
Allowance for loan losses allocated	$ 58		$ 86

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
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 50,907	$ 50,322	$ 48,144
Average recorded investment	48,602	50,863
Interest income recognized	350	421
Commercial Financial And Agricultural [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	14,844	27,050
Average recorded investment	14,924	20,078
Interest income recognized	47	174
Construction Real Estate Commercial [Domain]
Financing Receivable, Impaired [Line Items]
Recorded investment	2,879	1,393
Average recorded investment	2,239	1,377
Interest income recognized	12	14
Residential Real Estate Commercial [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	2,046	2,896
Average recorded investment	2,588	11,215
Interest income recognized	20	31
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Recorded investment	31,138	18,983
Average recorded investment	28,851	18,193
Interest income recognized	$ 271	$ 202

Loans (Aging Of Recorded Invest

Loans (Aging Of Recorded Investment In Past Due Loans) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019		Mar. 31, 2018	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing loans past due 30-89 days		$ 18,757			$ 29,919
Past due nonaccrual loans and loans past due 90 days or more and accruing		20,955	[1]		19,602	[2]
Total loans past due		39,712			49,521
Total current		5,720,621			5,660,277
Recorded Investment		5,760,333			5,709,798
Loans past due 90 days or more and accruing		1,589			2,302
Impaired Financing Receivable, Recorded Investment, Nonaccrual loans which are current in regards to contractual P&I payments		49,800			50,700
Financing Receivable, Modifications, Recorded Investment, During Period		4,560		$ 1,835
Construction Real Estate Commercial [Domain]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing loans past due 30-89 days		368
Past due nonaccrual loans and loans past due 90 days or more and accruing		2,299	[1]		1,635	[2]
Total loans past due		2,667			1,635
Total current		166,973			174,466
Recorded Investment		169,640			176,101
Loans past due 90 days or more and accruing		0			0
Financing Receivable, Modifications, Recorded Investment, During Period		480		63
Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing loans past due 30-89 days		1,428			4,786
Past due nonaccrual loans and loans past due 90 days or more and accruing		2,290	[1]		1,375	[2]
Total loans past due		3,718			6,161
Total current		1,088,546			1,071,228
Loans past due 90 days or more and accruing		45			10
Financing Receivable, Modifications, Recorded Investment, During Period		472		55
Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing loans past due 30-89 days		254			133
Past due nonaccrual loans and loans past due 90 days or more and accruing		80	[1]		20	[2]
Total loans past due		334			153
Total current		71,710			70,539
Recorded Investment		72,044			70,692
Loans past due 90 days or more and accruing		80			20
Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing loans past due 30-89 days		18			28
Past due nonaccrual loans and loans past due 90 days or more and accruing		11	[1]		19	[2]
Total loans past due		29			47
Total current		2,305			2,393
Recorded Investment		2,334			2,440
Loans past due 90 days or more and accruing		0			0
Residential Real Estate Commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing loans past due 30-89 days		124			683
Past due nonaccrual loans and loans past due 90 days or more and accruing		873	[1]		1,104	[2]
Total loans past due		997			1,787
Total current		429,943			429,093
Recorded Investment		430,940			430,880
Loans past due 90 days or more and accruing		0
Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing loans past due 30-89 days		9,913			13,210
Past due nonaccrual loans and loans past due 90 days or more and accruing		8,524	[1]		8,553	[2]
Total loans past due		18,437			21,763
Total current		1,111,350			1,113,742
Recorded Investment		1,129,787			1,135,505
Loans past due 90 days or more and accruing		582			1,124
Financing Receivable, Modifications, Recorded Investment, During Period		564		650
Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing loans past due 30-89 days		462			620
Past due nonaccrual loans and loans past due 90 days or more and accruing		975	[1]		907	[2]
Total loans past due		1,437			1,527
Total current		208,066			214,915
Recorded Investment		209,503			216,442
Loans past due 90 days or more and accruing		155			9
Financing Receivable, Modifications, Recorded Investment, During Period		81		339
Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing loans past due 30-89 days		98			155
Past due nonaccrual loans and loans past due 90 days or more and accruing		338	[1]		274	[2]
Total loans past due		436			429
Total current		13,238			13,934
Recorded Investment		13,674			14,363
Loans past due 90 days or more and accruing		0			24
Financing Receivable, Modifications, Recorded Investment, During Period		189		115
Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Recorded Investment	[3]	1,092,264			1,077,389
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing loans past due 30-89 days		57			780
Past due nonaccrual loans and loans past due 90 days or more and accruing		3,886	[1]		3,584	[2]
Total loans past due		3,943			4,364
Total current		1,327,780			1,283,431
Recorded Investment	[3]	1,331,723			1,287,795
Loans past due 90 days or more and accruing		0
Financing Receivable, Modifications, Recorded Investment, During Period		2,215		249
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing loans past due 30-89 days		6,035			9,524
Past due nonaccrual loans and loans past due 90 days or more and accruing		1,679	[1]		2,131	[2]
Total loans past due		7,714			11,655
Total current		1,298,569			1,284,237
Recorded Investment		1,306,283			1,295,892
Loans past due 90 days or more and accruing		727			1,115
Financing Receivable, Modifications, Recorded Investment, During Period		559		364
Leases [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Accruing loans past due 30-89 days		0			0
Past due nonaccrual loans and loans past due 90 days or more and accruing		0	[1]		0	[2]
Total loans past due		0			0
Total current		2,141			2,299
Recorded Investment		2,141			$ 2,299
Accruing Financing Receivable Modifications [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		652		429
Accruing Financing Receivable Modifications [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		480		63
Accruing Financing Receivable Modifications [Member] | Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		0		0
Accruing Financing Receivable Modifications [Member] | Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		0		0
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		54		0
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		0		251
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		94		102
Accruing Financing Receivable Modifications [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		24		13
Nonaccruing Financing Receivable Modifications [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		3,908		1,406
Nonaccruing Financing Receivable Modifications [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		472		55
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		510		650
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		81		88
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		95		13
Nonaccruing Financing Receivable Modifications [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		2,215		249
Nonaccruing Financing Receivable Modifications [Member] | Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period		$ 535		$ 351
[1]	1) Includes an aggregate of $1.6 million of loans past due 90 days or more and accruing. The remaining loans were past due nonaccrual loans. (2) Includes an aggregate off $49.8 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
[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 ($)		Mar. 31, 2019		Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment		$ 5,740,760,000		$ 5,692,132,000
Construction Real Estate Commercial [Domain]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment		168,880,000		175,300,000
Residential Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment		429,637,000		429,730,000
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	[1]	1,326,894,000		1,283,045,000
Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment		2,117,000		2,273,000
5 Rated [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		19,646,000		16,048,000
5 Rated [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		493,000		1,560,000
5 Rated [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		1,761,000		272,000
5 Rated [Member] | Commercial, Financial, and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		12,980,000	[2]	11,509,000	[3]
5 Rated [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		4,412,000	[2]	2,707,000	[3]
5 Rated [Member] | Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		0		0
6 Rated [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		658,000		485,000
6 Rated [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		2,000		0
6 Rated [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		104,000		41,000
6 Rated [Member] | Commercial, Financial, and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		543,000	[2]	444,000	[3]
6 Rated [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	[2]	9,000
6 Rated [Member] | Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		0		0
Impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		50,962,000		48,218,000
Impaired [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		2,879,000		1,866,000
Impaired [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		2,046,000		2,732,000
Impaired [Member] | Commercial, Financial, and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		14,899,000	[2]	15,194,000	[3]
Impaired [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		31,138,000	[2]	28,426,000	[3]
Impaired [Member] | Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		0		0
Purchased credit impaired [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		3,372,000		3,961,000
Purchased credit impaired [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment				503,000
Purchased credit impaired [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		30,000		251,000
Purchased credit impaired [Member] | Commercial, Financial, and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	[2]	330,000		148,000
Purchased credit impaired [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	[2]	3,012,000		3,059,000
Purchased credit impaired [Member] | Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		0		0
Pass Rated [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		2,952,070,000		2,905,752,000
Pass Rated [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		166,266,000		172,172,000
Pass Rated [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		426,999,000		427,584,000
Pass Rated [Member] | Commercial, Financial, and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	[2]	1,063,512,000		1,050,094,000
Pass Rated [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment	[2]	1,293,152,000		1,253,603,000
Pass Rated [Member] | Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		2,141,000		2,299,000
Recorded Investment [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment		3,026,708,000		2,974,464,000
Recorded Investment [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment		169,640,000		176,101,000
Recorded Investment [Member] | Residential Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment		430,940,000		430,880,000
Recorded Investment [Member] | Commercial, Financial, and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	[2]	1,092,264,000		1,077,389,000
Recorded Investment [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment	[2]	1,331,723,000		1,287,795,000
Recorded Investment [Member] | Leases [Member]
Financing Receivable, Recorded Investment [Line Items]
Recorded Investment		2,141,000		2,299,000
Financial Asset Acquired with Credit Deterioration [Member] | Nonperforming Financial Instruments [Member] | Purchased credit impaired [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total ending loan balance, recorded investment		$ 924,000		$ 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
	Mar. 31, 2019USD ($)contracts	Mar. 31, 2018USD ($)contracts
Financing Receivable, Recorded Investment [Line Items]
Additional Specific Reserves Related To Troubled Debt Restructuring	$ 0	$ 10,000
Troubled Debt Restructuring, Classification removed	$ 23,000	$ 324,000
Number of Contracts | contracts	96	74
Total Recorded Investment	$ 4,560,000	$ 1,835,000
Financing Receivable, Modifications, Subsequent Default, Recorded Investment, During Period	$ 700,000	$ 1,400,000
Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	0	0
Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	5	4
Total Recorded Investment	$ 472,000	$ 55,000
Residential Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	0	0
Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	8	9
Total Recorded Investment	$ 564,000	$ 650,000
Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	0	0
Residential Real Estate Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	$ 189,000	$ 115,000
Residential Real Estate Home Equity Line Of Credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	3	2
Total Recorded Investment	$ 81,000	$ 339,000
Construction Real Estate Commercial [Domain]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	1	1
Total Recorded Investment	$ 480,000	$ 63,000
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	2	3
Total Recorded Investment	$ 2,215,000	$ 249,000
Residential Real Estate Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	8	5
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	69	50
Total Recorded Investment	$ 559,000	$ 364,000
Accruing [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	652,000	429,000
Accruing [Member] | Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	0	0
Accruing [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	54,000	0
Accruing [Member] | Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	0	0
Accruing [Member] | Residential Real Estate Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	94,000	102,000
Accruing [Member] | Residential Real Estate Home Equity Line Of Credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	0	251,000
Accruing [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	480,000	63,000
Accruing [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	24,000	13,000
Nonaccrual [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	3,908,000	1,406,000
Nonaccrual [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	472,000	55,000
Nonaccrual [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	510,000	650,000
Nonaccrual [Member] | Residential Real Estate Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	95,000	13,000
Nonaccrual [Member] | Residential Real Estate Home Equity Line Of Credit [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	81,000	88,000
Nonaccrual [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	2,215,000	249,000
Nonaccrual [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	535,000	$ 351,000
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Total Recorded Investment	$ 0

Loans (Recorded Investment In F

Loans (Recorded Investment In Financing Receivable Modified As TDR Within 12 Months) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)contracts	Mar. 31, 2018USD ($)contracts	Dec. 31, 2018USD ($)
Financing Receivable, Recorded Investment [Line Items]
Troubled Debt Restructuring, Classification removed	$ 23	$ 324
Number of Contracts | contracts	55	56
Recorded Investment	$ 660	$ 1,377
Financing Receivable, Modifications, Recorded Investment, During Period	4,560	$ 1,835
Troubled Debt Restructuring Included In Nonaccrual Loans	23,700		$ 24,600
Nonaccrual Trouble Debt Restructuring Current	$ 18,000		$ 19,200
Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	6	3
Recorded Investment	$ 153	$ 207
Financing Receivable, Modifications, Recorded Investment, During Period	$ 472	$ 55
Residential Real Estate Commercial [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	0	1
Recorded Investment		$ 17
Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	3	7
Recorded Investment	$ 68	$ 536
Financing Receivable, Modifications, Recorded Investment, During Period	$ 564	$ 650
Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	5	3
Recorded Investment	$ 68	$ 174
Financing Receivable, Modifications, Recorded Investment, During Period	81	339
Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	$ 189	$ 115
Construction Real Estate Commercial [Domain]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	0	0
Financing Receivable, Modifications, Recorded Investment, During Period	$ 480	$ 63
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	$ 559	$ 364
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	0	1
Recorded Investment		$ 114
Financing Receivable, Modifications, Recorded Investment, During Period	$ 2,215	$ 249
Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	0	0
Recorded Investment	$ 0	$ 0
Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	0	0
Recorded Investment	$ 0	$ 0
Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	1	0
Recorded Investment	$ 28	$ 0
Consumer Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	40	41
Recorded Investment	$ 343	$ 329
Finance Leases Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Number of Contracts | contracts	0	0
Recorded Investment	$ 0	$ 0
Accruing Financing Receivable Modifications [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	652	429
Accruing Financing Receivable Modifications [Member] | Construction Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	0	0
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	54	0
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	0	251
Accruing Financing Receivable Modifications [Member] | Construction Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	0	0
Accruing Financing Receivable Modifications [Member] | Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	94	102
Accruing Financing Receivable Modifications [Member] | Construction Real Estate Commercial [Domain]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	480	63
Accruing Financing Receivable Modifications [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	24	13
Nonaccruing Financing Receivable Modifications [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	3,908	1,406
Nonaccruing Financing Receivable Modifications [Member] | Commercial Financial And Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	472	55
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	510	650
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - HELOC [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	81	88
Nonaccruing Financing Receivable Modifications [Member] | Residential Real Estate - Installment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	95	13
Nonaccruing Financing Receivable Modifications [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	535	351
Nonaccruing Financing Receivable Modifications [Member] | Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Financing Receivable, Modifications, Recorded Investment, During Period	$ 2,215	$ 249

Allowance For Loan Losses (Acti

Allowance For Loan Losses (Activity In The Allowance For Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for Loan and Lease Losses, Reserve Estimate Methodology, Historical Loss Period Factor			108 months	96 months
Financing Receivable, Allowance for Credit Losses, Write-downs	$ 2,987	$ 3,450
Financing Receivable, Allowance for Credit Losses, Recovery	2,345	2,171
Financing Receivables Allowance For Credit Losses Net Charge Offs	642	1,279
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	51,512	49,988	$ 49,988
Ending balance	53,368	48,969	51,512	$ 49,988
Provision for Loan, Lease, and Other Losses	2,498	260
Commercial Financial And Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	198	649
Financing Receivable, Allowance for Credit Losses, Recovery	416	652
Financing Receivables Allowance For Credit Losses Net Charge Offs	(218)	(3)
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	16,777	15,022	15,022
Ending balance	17,337	14,077	16,777	15,022
Provision for Loan, Lease, and Other Losses	342	(948)
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	54	47
Financing Receivable, Allowance for Credit Losses, Recovery	59	87
Financing Receivables Allowance For Credit Losses Net Charge Offs	(5)	(40)
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	9,768	9,601	9,601
Ending balance	10,193	9,488	9,768	9,601
Provision for Loan, Lease, and Other Losses	420	(153)
Construction Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	0	0
Financing Receivable, Allowance for Credit Losses, Recovery	88	59
Financing Receivables Allowance For Credit Losses Net Charge Offs	(88)	(59)
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	4,463	4,430	4,430
Ending balance	4,564	4,463	4,463	4,430
Provision for Loan, Lease, and Other Losses	13	(26)
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	29	116
Financing Receivable, Allowance for Credit Losses, Recovery	382	360
Financing Receivables Allowance For Credit Losses Net Charge Offs	(353)	(244)
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	8,731	9,321	9,321
Ending balance	9,170	9,415	8,731	9,321
Provision for Loan, Lease, and Other Losses	86	(150)
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	2,706	2,638
Financing Receivable, Allowance for Credit Losses, Recovery	1,400	1,013
Financing Receivables Allowance For Credit Losses Net Charge Offs	1,306	1,625
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	11,773	11,614	11,614
Ending balance	12,104	11,526	11,773	11,614
Provision for Loan, Lease, and Other Losses	1,637	1,537
Leases [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Allowance for Credit Losses, Write-downs	0	0
Financing Receivable, Allowance for Credit Losses, Recovery	0	0
Financing Receivables Allowance For Credit Losses Net Charge Offs	0	0
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	0	0	0
Ending balance	0	0	$ 0	$ 0
Provision for Loan, Lease, and Other Losses	$ 0	$ 0

Allowance For Loan Losses (Comp

Allowance For Loan Losses (Composition Of The Allowance For Loan Losses) (Details) - USD ($)		Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment		$ 2,468,000	$ 2,273,000
Allowance for loan losses collectively evaluated for impairment		50,900,000	49,239,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		0	0
Total ending allowance balance		53,368,000	51,512,000
Loans individually evaluated for impairment		50,881,000	48,135,000
Loans collectively evaluated for impairment		5,686,517,000	5,640,054,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance		3,362,000	3,943,000
Total ending loan balance, net of accrued interest receivable		$ 5,740,760,000	$ 5,692,132,000
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment		4.85%	4.72%
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment		0.90%	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		0.93%	0.90%
Recorded investment		$ 50,907,000	$ 48,144,000
Recorded investment collectively evaluated for impairment		5,706,054,000	5,657,693,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		3,372,000	3,961,000
Recorded Investment		5,760,333,000	5,709,798,000
Commercial Financial And Agricultural [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment		2,403,000	2,169,000
Allowance for loan losses collectively evaluated for impairment		14,934,000	14,608,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		0	0
Total ending allowance balance		17,337,000	16,777,000
Loans individually evaluated for impairment		14,843,000	15,119,000
Loans collectively evaluated for impairment		1,071,519,000	1,057,520,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance		328,000	147,000
Total ending loan balance, net of accrued interest receivable	[1]	$ 1,086,690,000	$ 1,072,786,000
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment		16.19%	14.35%
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment		1.39%	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		1.60%	1.56%
Recorded investment		$ 14,844,000	$ 15,120,000
Recorded investment collectively evaluated for impairment		1,077,090,000	1,062,121,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		330,000	148,000
Recorded Investment	[1]	1,092,264,000	1,077,389,000
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment		58,000	86,000
Allowance for loan losses collectively evaluated for impairment		10,135,000	9,682,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		0	0
Total ending allowance balance		10,193,000	9,768,000
Loans individually evaluated for impairment		31,113,000	28,418,000
Loans collectively evaluated for impairment		1,292,777,000	1,251,579,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance		3,004,000	3,048,000
Total ending loan balance, net of accrued interest receivable	[1]	$ 1,326,894,000	$ 1,283,045,000
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment		0.19%	0.30%
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment		0.78%	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		0.77%	0.76%
Recorded investment		$ 31,138,000	$ 28,426,000
Recorded investment collectively evaluated for impairment		1,297,573,000	1,256,310,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		3,012,000	3,059,000
Recorded Investment	[1]	1,331,723,000	1,287,795,000
Construction Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment		0	0
Allowance for loan losses collectively evaluated for impairment		4,564,000	4,463,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		0	0
Total ending allowance balance		4,564,000	4,463,000
Loans individually evaluated for impairment		2,880,000	1,866,000
Loans collectively evaluated for impairment		240,180,000	245,909,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance		0	499,000
Total ending loan balance, net of accrued interest receivable		$ 243,060,000	$ 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		1.90%	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		1.88%	1.80%
Recorded investment		$ 2,879,000	$ 1,866,000
Recorded investment collectively evaluated for impairment		241,139,000	246,864,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		0	503,000
Recorded Investment		244,018,000	249,233,000
Residential Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment		7,000	18,000
Allowance for loan losses collectively evaluated for impairment		9,163,000	8,713,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		0	0
Total ending allowance balance		9,170,000	8,731,000
Loans individually evaluated for impairment		2,045,000	2,732,000
Loans collectively evaluated for impairment		1,777,495,000	1,790,637,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance		30,000	249,000
Total ending loan balance, net of accrued interest receivable		$ 1,779,570,000	$ 1,793,618,000
Allowance for loan losses as a percentage of loan balance individually evaluated for impairment		0.34%	0.66%
Allowance for loan losses as a percentage of loan balance collectively evaluated for impairment		0.52%	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		0.52%	0.49%
Recorded investment		$ 2,046,000	$ 2,732,000
Recorded investment collectively evaluated for impairment		1,781,828,000	1,794,207,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		30,000	251,000
Recorded Investment		1,783,904,000	1,797,190,000
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment		0	0
Allowance for loan losses collectively evaluated for impairment		12,104,000	11,773,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		0	0
Total ending allowance balance		12,104,000	11,773,000
Loans individually evaluated for impairment		0	0
Loans collectively evaluated for impairment		1,302,429,000	1,292,136,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance		0	0
Total ending loan balance, net of accrued interest receivable		$ 1,302,429,000	$ 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		0.93%	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		0.93%	0.91%
Recorded investment		$ 0	$ 0
Recorded investment collectively evaluated for impairment		1,306,283,000	1,295,892,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		0	0
Recorded Investment		1,306,283,000	1,295,892,000
Leases [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Allowance for loan losses individually evaluated for impairment		0	0
Allowance for loan losses collectively evaluated for impairment		0	0
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		0	0
Total ending allowance balance		0	0
Loans individually evaluated for impairment		0	0
Loans collectively evaluated for impairment		2,117,000	2,273,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance		0	0
Total ending loan balance, net of accrued interest receivable		$ 2,117,000	$ 2,273,000
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		0.00%	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		0.00%	0.00%
Recorded investment		$ 0	$ 0
Recorded investment collectively evaluated for impairment		2,141,000	2,299,000
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Carrying Amount, Net		0	0
Recorded Investment		2,141,000	2,299,000
Purchased credit impaired [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross		3,372,000	3,961,000
Purchased credit impaired [Member] | Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross	[2]	3,012,000	3,059,000
Purchased credit impaired [Member] | Leases [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and Leases Receivable, Gross		0	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 Losses [Line Items]
Allowance for loan losses individually evaluated for impairment		0	0
Loans and Leases Receivable, Gross		924,000	475,000
Recorded Investment		$ 925,000	$ 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	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Loans Held for Sale [Abstract]
Mortgages Held-for-sale, Fair Value Disclosure	$ 4,300	$ 4,200
Disposal Group, Including Discontinued Operation, Mortgage Loans	4,200	4,100
Gain (Loss) on Sale of Mortgage Loans	$ 71	$ 60

Goodwill and other intangible_2

Goodwill and other intangibles (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 112,739	$ 72,334	$ 112,739	$ 72,334
Other Intangible Assets, Net	6,682	0	6,971	0
Goodwill, Acquired During Period	0	0	40,405
Indefinite-lived Intangible Assets Acquired	0	0
Acquired goodwill and intangibles	0	0
Amortization of Intangible Assets	289	0
Finite-lived Intangible Assets Acquired	6,249
Indefinite-lived Intangible Assets Acquired	1,300
Finite-Lived Intangible Assets, Accumulated Amortization	867
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	945
Finite-Lived Intangible Assets, Amortization Expense, Year Two	1,149
Finite-Lived Intangible Assets, Amortization Expense, Year Three	869
Finite-Lived Intangible Assets, Amortization Expense, Year Four	629
Finite-Lived Intangible Assets, Amortization Expense, Year Five	521
Intangible Assets, Gross (Excluding Goodwill)	7,549
Intangible Assets, Net (Including Goodwill)	119,421	$ 72,334	$ 119,710	$ 72,334
Core Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	867
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Accumulated Amortization	$ 0

Investment in Qualified Affor_3

Investment in Qualified Affordable Housing (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Equity Method Investments and Joint Ventures [Abstract]
Investment in qualified affordable housing tax credits amortization	$ 1,812	$ 1,851
Affordable housing tax credit investments	48,535		$ 50,347
Affordable Housing Program Obligation	19,624		$ 22,282
Affordable Housing Tax Credits and Other Tax Benefits, Amount	$ 2,200	$ 2,700

Other Real Estate Owned (Detail

Other Real Estate Owned (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2019	Dec. 31, 2018
Schedule of Assets Repossessed or Foreclosed, or loans in process of foreclosure [Line Items]
Other Repossessed Assets		$ 3,900	$ 4,000
Other repossessed assets, transfer to repossessed assets	$ 4,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets		4,629	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		2,539	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		1,107	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		983	836
Mortgage Loans in Process of Foreclosure, Amount		$ 2,789	$ 2,346

Loan Servicing (Narrative) (Det

Loan Servicing (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Transfers and Servicing of Financial Assets [Abstract]
Serviced sold mortgage loans		$ 1,390,000	$ 1,370,000
Serviced sold mortgage loans with recourse	$ 2,400	$ 2,500	$ 2,800
Servicing fees included in other service income	900
Mortgage Loans Sold with Recourse, Reserve	$ 23

Loan Servicing (Activity For MS

Loan Servicing (Activity For MSRs And Related Valuation Allowance) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Servicing Asset at Amortized Value, Balance [Roll Forward]
Carrying amount, net, beginning of period	$ 10,178,000	$ 9,688,000
Additions	262,000	328,000
Amortization	(301,000)	(352,000)
Changes in valuation inputs & assumptions	(57,000)	305,000
Carrying amount, net, end of period	10,082,000	9,969,000
Valuation Allowance for Impairment of Recognized Servicing Assets [Roll Forward]
Valuation allowance, beginning of period	232,000	630,000
Changes in valuation allowance	(57,000)	305,000
Valuation allowance, end of period	$ 289,000	$ 325,000

Leases - Narrative (Details)

Leases - Narrative (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Deferred Rent Credit		$ 600,000
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets			$ (995,000)
Other Assets [Member]
Operating Lease, Right-of-Use Asset	$ 10,600,000	11,000,000
Other Liabilities [Member]
Operating Lease, Liability	$ 11,388,000	11,800,000
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
	Mar. 31, 2019USD ($)
Lease, Cost [Abstract]
Operating Lease, Cost	$ 663
Sublease Income	(93)
Lease, Cost	570
Operating Lease, Payments	$ 656
Operating Lease, Weighted Average Remaining Lease Term	6 years 7 months 6 days
Operating Lease, Weighted Average Discount Rate, Percent	3.10%

Leases - Operating Lease Liabil

Leases - Operating Lease Liabilities Payments Due (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	$ 2,025
Lessee, Operating Lease, Liability, Payments, Due Year Two	2,168
Lessee, Operating Lease, Liability, Payments, Due Year Three	1,892
Lessee, Operating Lease, Liability, Payments, Due Year Four	1,797
Lessee, Operating Lease, Liability, Payments, Due Year Five	1,709
Lessee, Operating Lease, Liability, Payments, Due after Year Five	3,098
Lessee, Operating Lease, Liability, Payments, Due	12,689
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(1,301)
Other Liabilities [Member]
Lessee, Lease, Description [Line Items]
Operating Lease, Liability	$ 11,388	$ 11,800

Repurchase Agreement Borrowin_3

Repurchase Agreement Borrowings (Details) - USD ($) $ in Thousands	Mar. 31, 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	$ 157,569	$ 164,966
Pledged Assets Separately Reported, Securities Pledged for Repurchase Agreements, at Fair Value	206,000	272,000
Available unpledged securities	877,000	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	157,569	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
	Mar. 31, 2019	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Interest Income on Interest-rate Swap	$ 8,000	$ 0

Derivatives Schedule of Derivat

Derivatives Schedule of Derivative Instruments (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Derivative [Line Items]
Derivative, Notional Amount	$ 25,000
Derivative, Average Fixed Interest Rate	2.595%
Derivative, Average Variable Interest Rate	2.765%
Derivative, Average Remaining Maturity	3 years 2 months 12 days
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	$ 261

Derivatives Schedule of Cash Fl

Derivatives Schedule of Cash Flow Hedges in Accumulated Other Comprehensive Income (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Derivative [Line Items]
Unrealized Gain (Loss) on Interest Rate Cash Flow Hedges, Pretax, Accumulated Other Comprehensive Income (Loss)	$ (206)
Interest Rate Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net	0
Gain (Loss) on Cash Flow Hedge Ineffectiveness, Net	$ 0

Derivatives Schedule of Cash _2

Derivatives Schedule of Cash Flow Hedge, Statements of Financial Performance and Position, Location (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)
Derivative [Line Items]
Derivative, Notional Amount	$ 25,000
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	(261)
Other Liabilities [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount	$ 25,000

Other Comprehensive Income (L_3

Other Comprehensive Income (Loss) (Component Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number	165,279
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax		$ 2,600
Other comprehensive loss before reclassifications	$ 14,335	(23,410)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax		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
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax	(206)	0
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	0	2,024
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax		2,024
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax		(21,386)
Other comprehensive income (loss)	14,335	(21,386)
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Reclassification Adjustments, after Tax	14,541	(23,410)
Other Comprehensive (Income) Loss, Defined Benefit Plan, before Reclassification Adjustment, after Tax	0	0
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax	(206)	0
Changes in pension plan assets and benefit obligations, Net-of-tax amount	(29,672)	(26,701)	$ 29,672	23,526
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax	(206)	0	0	0
Unrealized gains on available-for-sale securities, Net-of-tax amount	(5,575)	(25,940)	(20,116)	(2,928)
Total accumulated other comprehensive income (loss), Net-of-tax amount	(35,453)	$ (52,641)	$ (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)
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) [Line Items]
Other comprehensive income (loss)	14,335
Accounting Standards Update 2016-01 [Member] | Debt Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax	$ 14,541
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
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	180,284		152,631
Treasury Stock, Shares, Acquired	86,650	0
Common Stock [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Treasury Stock, Shares, Acquired	86,650	0
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	58,740	48,053

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
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Income available to common shareholders	$ 25,455	$ 31,123
Denominator for basic earnings per share (weighted average common shares outstanding)	15,651,541	15,288,332
Effect of dilutive options and warrants	93,236	142,996
Denominator for diluted earnings per share (weighted average common shares outstanding adjusted for the effect of dilutive options and warrants)	15,744,777	15,431,328
Basic earnings per common share	$ 1.63	$ 2.04
Diluted earnings per common share	$ 1.62	$ 2.02

Segment Information (Schedule O

Segment Information (Schedule Of Operating Results By Segment) (Details)	3 Months Ended
	Mar. 31, 2019USD ($)segments	Mar. 31, 2018USD ($)	Dec. 31, 2018USD ($)
Segment Reporting Information [Line Items]
Number of Operating Segments | segments	2
Net interest income	$ 67,776,000	$ 64,850,000
Provision for (recovery of) loan losses	2,498,000	260,000
Other income and security gains	22,025,000	26,903,000
Total other expense	56,827,000	54,308,000
Income (loss) before income taxes	30,476,000	37,185,000
Income Tax Expense (Benefit)	5,021,000	6,062,000
Net Income	25,455,000	31,123,000
Assets	7,852,246,000	7,518,970,000	$ 7,804,308,000
PNB [Member]
Segment Reporting Information [Line Items]
Net interest income	66,282,000	61,441,000
Provision for (recovery of) loan losses	2,440,000	(67,000)
Other income and security gains	20,708,000	19,915,000
Total other expense	51,974,000	49,001,000
Income (loss) before income taxes	32,576,000	32,422,000
Income Tax Expense (Benefit)	5,884,000	5,677,000
Net Income	26,692,000	26,745,000
Assets	7,801,148,000	7,455,518,000
GFSC [Member]
Segment Reporting Information [Line Items]
Net interest income	1,325,000	1,305,000
Provision for (recovery of) loan losses	145,000	503,000
Other income and security gains	32,000	30,000
Total other expense	845,000	760,000
Income (loss) before income taxes	367,000	72,000
Income Tax Expense (Benefit)	80,000	15,000
Net Income	287,000	57,000
Assets	30,238,000	30,553,000
All Other [Member]
Segment Reporting Information [Line Items]
Net interest income	169,000	2,104,000
Provision for (recovery of) loan losses	(87,000)	(176,000)
Other income and security gains	1,285,000	6,958,000
Total other expense	4,008,000	4,547,000
Income (loss) before income taxes	(2,467,000)	4,691,000
Income Tax Expense (Benefit)	(943,000)	370,000
Net Income	(1,524,000)	4,321,000
Assets	$ 20,860,000	$ 32,899,000

Share Based Compensation (Detai

Share Based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 10,343
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	180,284		152,631
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	(27,719)	(18,800)
Shares Paid for Tax Withholding for Share Based Compensation	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	0
Allocated Share-based Compensation Expense	$ 1,400	$ 1,100
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]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 3,467
Expense to be paid Year Two [Domain]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	3,606
Expense to be paid Year Three [Domain]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	2,221
Expense to be paid Year Four [Domain]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	918
Expense to be paid Year Five [Domain]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized	$ 131
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
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	631,033
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	58,740
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
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	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	61,317
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	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	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] | 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			13,637

Benefit Plan (Components Of Net

Benefit Plan (Components Of Net Periodic Benefit Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1,468	$ 1,637
Interest cost	1,373	1,309
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	285	(68)
Pension plan contributions	0	0
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	1,468	1,637
Interest cost	1,373	1,309
Expected return on plan assets	(3,026)	(3,354)
Recognized net actuarial loss	470	340
Benefit expense	285	(68)
Supplemental Employee Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	201	233
Interest cost	165	117
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	366	350
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost	201	233
Interest cost	165	117
Benefit expense	$ 366	$ 350

Fair Value (Narrative) (Details

Fair Value (Narrative) (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2019USD ($)	Mar. 31, 2018USD ($)	Dec. 31, 2018USD ($)	Dec. 31, 2017USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
expense related to other repossessed assets		$ 0
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets				$ (995,000)
Loans Held-for-sale, Fair Value Disclosure	$ 4,276,000		$ 4,158,000
Impaired Financing Receivable, Carrying Value	$ 48,439,000		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	$ 10,957,000		11,246,000
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	2,468,000		2,273,000
Impaired Financing Receivable, Related Allowance	2,468,000		2,273,000
Impaired Loan Fair Value	5,462,000		6,399,000
Partial Charge-Offs On Impaired Loans carried at Fair Value	3,341,000		3,630,000
Book Value Of Impaired Loans Carried At Fair Value	5,527,000		6,503,000
Impaired Financing Receivable, carried at fair value, related expense	33,000	50,000
MSR recorded at lower of cost or fair value	10,082,000	9,969,000	10,178,000	9,688,000
Mortgage Servicing Rights Fair Value	1,800,000		1,200,000
Valuation allowance of MSR	289,000	325,000	232,000	630,000
MSRs recorded at cost	8,300,000		9,000,000
Changes due to fair value adjustments	(57,000)	305,000
Other Real Estate, Foreclosed Assets, and Repossessed Assets	$ 4,629,000		$ 4,303,000
Percent of OREO held at fair value	83.00%		85.00%
Other Real Estate, Foreclosed Assets, and Repossessed Assets, Fair Value	$ 3,800,000		$ 3,700,000
OREO valuation adjustments	27,000	207,000
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	5,400,000		6,100,000
Alternative Investment, income recognized	1,600,000	$ (300,000)
Commercial Receivables, excluding Commercial, Financial, and Agricultural [Domain]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Financing Receivable, Related Allowance	65,000		104,000
Financing Receivable, not collateral dependent [Domain]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Financing Receivable, Related Allowance	2,403,000		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	58,000		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
Other Real Estate, Foreclosed Assets, and Repossessed Assets	1,107,000		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	983,000		836,000
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	13,300,000		11,000,000
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired Loan Fair Value	$ 5,462,000		$ 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	1.075		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
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	0.607		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		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	0.264		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
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	0.341		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	0.284		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	0.346		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	0.218		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	0.103		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	0.425		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
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
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	0.017		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		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	0.010		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	0.304		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	0.108		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
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	0.108		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	0.127		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	0.108		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		0.130
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	0.901		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	0.107		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	0.042		0.042

Fair Value (Assets And Liabilit

Fair Value (Assets And Liabilities Measured At Fair Value On A Recurring Basis) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Other Equity Securities [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities	$ 1,769	$ 1,649
Other Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities	1,336	1,225
Other Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities	433	424
Other Equity Securities [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	1,769	1,649
Other Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	1,336	1,225
Other Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investments, Fair Value Disclosure	433	424
Swap [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Swap	226	226
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	261
Swap [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Swap	226	226
Swap [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Swap	226	226
Swap [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Swap	226	226
Cash and Cash Equivalents, Fair Value Disclosure	187,479	167,214
Mortgage loans held for sale	4,300	4,200
Investment securities	1,357,610	1,354,843
Loans Held-for-sale, Fair Value Disclosure	4,276	4,158
Impaired Loan Fair Value	5,462	6,399
Other Assets, Fair Value Disclosure	5,622,367	5,570,136
Loans Receivable, Fair Value Disclosure	5,632,280	5,580,780
Time deposits	985,542	1,044,620
Other Liabilities, Fair Value Disclosure	2,633	1,267
Deposits, Fair Value Disclosure	988,175	1,045,887
Short Term Borrowings Fair Value	212,569	221,966
Long-term debt	377,428	400,203
Subordinated Debt Obligations, Fair Value Disclosure	12,791	12,959
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	261
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	187,479	167,214
Mortgage IRLCs	0	0
Other Liabilities, Fair Value Disclosure	2,633	1,267
Deposits, Fair Value Disclosure	2,633	1,267
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage IRLCs	175	87
Investment securities	1,357,610	1,354,843
Loans Held-for-sale, Fair Value Disclosure	4,276	4,158
Loans Receivable, Fair Value Disclosure	4,451	4,245
Time deposits	985,542	1,044,620
Deposits, Fair Value Disclosure	985,542	1,044,620
Short Term Borrowings Fair Value	212,569	221,966
Long-term debt	377,428	400,203
Subordinated Debt Obligations, Fair Value Disclosure	12,791	12,959
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	5,462	6,399
Other Assets, Fair Value Disclosure	5,622,367	5,570,136
Loans Receivable, Fair Value Disclosure	5,627,829	5,576,535
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage loans held for sale	4,276	4,158
Mortgage IRLCs	175	87
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Mortgage loans held for sale	4,276	4,158
Mortgage IRLCs	175	87
Reported Value Measurement [Member] | Other Equity Securities [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Investment securities	1,769	1,649
Reported Value Measurement [Member] | Swap [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Swap	226	226
Reported Value Measurement [Member]
Fair Value, Assets And Liabilities Measured On Recurring Basis [Line Items]
Cash and Cash Equivalents, Fair Value Disclosure	187,479	167,214
Mortgage IRLCs	175	87
Investment securities	1,349,149	1,355,229
Loans Held-for-sale, Fair Value Disclosure	4,276	4,158
Impaired Loan Fair Value	5,462	6,399
Other Assets, Fair Value Disclosure	5,677,479	5,629,976
Loans Receivable, Fair Value Disclosure	5,687,392	5,640,620
Time deposits	982,983	1,043,177
Other Liabilities, Fair Value Disclosure	2,633	1,267
Deposits, Fair Value Disclosure	985,616	1,044,444
Short Term Borrowings Fair Value	212,569	221,966
Long-term debt	375,000	400,000
Subordinated Debt Obligations, Fair Value Disclosure	$ 15,000	$ 15,000

Fair Value (Reconciliation Of L

Fair Value (Reconciliation Of Level 3 Input For Financial Instruments Measured On Recurring Basis) (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
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	$ 977,990		$ 1,003,421
Other Equity Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments, Fair Value Disclosure	1,769		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	977,990		1,003,421
Fair Value, Inputs, Level 3 [Member] | Other Equity Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Investments, Fair Value Disclosure	433		$ 424
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning	424	$ 417
Included in other comprehensive income		3
Balance, ending	433	420
Fair Value, Inputs, Level 3 [Member] | Swap [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, Beginning of Period	(226)	(226)
Included in other comprehensive income	0	0
Balance, End of Period	$ (226)	$ (226)

Fair Value (Fair Value Of Finan

Fair Value (Fair Value Of Financial Instruments) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and money market instruments	$ 187,479	$ 167,214
Investment securities	1,357,610	1,354,843
Federal Home Loan Bank Stock	37,983	43,388
Federal Reserve Bank Stock	10,811	8,225
Loans Held-for-sale, Fair Value Disclosure	4,276	4,158
Impaired Loan Fair Value	5,462	6,399
Other loans	5,622,367	5,570,136
Loans receivable, net	5,632,280	5,580,780
Time deposits	985,542	1,044,620
Other	2,633	1,267
Total deposits	988,175	1,045,887
Short-term borrowings	212,569	221,966
Long-term debt	377,428	400,203
Subordinated debentures/notes	12,791	12,959
Unrealized Gain (Loss) on Cash Flow Hedging Instruments	261
Other Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	1,769	1,649
Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	226	226
Reported Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and money market instruments	187,479	167,214
Investment securities	1,349,149	1,355,229
Loans Held-for-sale, Fair Value Disclosure	4,276	4,158
Derivative Assets	175	87
Impaired Loan Fair Value	5,462	6,399
Other loans	5,677,479	5,629,976
Loans receivable, net	5,687,392	5,640,620
Time deposits	982,983	1,043,177
Other	2,633	1,267
Total deposits	985,616	1,044,444
Short-term borrowings	212,569	221,966
Long-term debt	375,000	400,000
Subordinated debentures/notes	15,000	15,000
Reported Value Measurement [Member] | Other Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	1,769	1,649
Reported Value Measurement [Member] | Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	226	226
Estimate of Fair Value Measurement [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Assets	175	87
Impaired Loan Fair Value		6,399
Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and money market instruments	187,479	167,214
Derivative Assets	0	0
Other	2,633	1,267
Total deposits	2,633	1,267
Fair Value, Inputs, Level 1 [Member] | Other Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	1,336	1,225
Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	1,357,610	1,354,843
Loans Held-for-sale, Fair Value Disclosure	4,276	4,158
Derivative Assets	175	87
Loans receivable, net	4,451	4,245
Time deposits	985,542	1,044,620
Total deposits	985,542	1,044,620
Short-term borrowings	212,569	221,966
Long-term debt	377,428	400,203
Subordinated debentures/notes	12,791	12,959
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	261
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative Assets	0	0
Impaired Loan Fair Value	5,462	6,399
Other loans	5,622,367	5,570,136
Loans receivable, net	5,627,829	5,576,535
Fair Value, Inputs, Level 3 [Member] | Other Equity Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investment securities	433	424
Fair Value, Inputs, Level 3 [Member] | Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Swap	$ 226	$ 226

Fair Value Qualitative informat

Fair Value Qualitative information about Level 3 fair value measurements (Details) $ in Thousands	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Loans Receivable, Fair Value Disclosure	$ 5,632,280	$ 5,580,780
Impaired Loan Fair Value	5,462	6,399
Other Assets, Fair Value Disclosure	5,622,367	5,570,136
Loans Held-for-sale, Fair Value Disclosure	4,276	4,158
Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Loans Receivable, Fair Value Disclosure	5,627,829	5,576,535
Impaired Loan Fair Value	5,462	6,399
Other Assets, Fair Value Disclosure	5,622,367	5,570,136
Fair Value, Measurements, Nonrecurring [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Loans Receivable, Fair Value Disclosure	5,462	6,399
Other Assets, Fair Value Disclosure	3,823	3,674
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Loans Receivable, Fair Value Disclosure	5,462	6,399
Other Assets, Fair Value Disclosure	3,823	3,674
Fair Value, Measurements, Nonrecurring [Member] | Construction Real Estate [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Assets, Fair Value Disclosure	728	729
Fair Value, Measurements, 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	728	729
Fair Value, Measurements, 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	728	729
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Loans Receivable, Fair Value Disclosure	3,691	4,059
Fair Value, Measurements, Nonrecurring [Member] | Commercial Real Estate Portfolio Segment [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Loans Receivable, Fair Value Disclosure	3,691	4,059
Fair Value, Measurements, 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, Measurements, 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	2,475	2,295
Fair Value, Measurements, 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, Measurements, Nonrecurring [Member] | Residential Real Estate [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Other Assets, Fair Value Disclosure	620	650
Fair Value, Measurements, 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	620	650
Fair Value, Measurements, 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, Measurements, 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	620	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, Measurements, 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)
Loans Receivable, Fair Value Disclosure	3,691
Fair Value [Member] | Fair Value, Measurements, Nonrecurring [Member] | Residential Real Estate [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items] (Deprecated 2018-01-31)
Loans Receivable, Fair Value Disclosure	$ 136
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	0.017	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	0.607	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	0.346	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	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	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	0.218	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	1.075	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	0.341	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	0.284	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	0.010	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	0.264	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	0.103	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	0.304	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	0.425	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	0.108	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	0.108	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	0.108	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	0.127	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	0.042	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	0.901	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	0.107	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	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Held-for-sale, Fair Value Disclosure	$ 4,276	$ 4,158
Loans Receivable, Fair Value Disclosure	5,632,280	5,580,780
Other Assets, Fair Value Disclosure	5,622,367	5,570,136
Other Repossessed Assets	3,900	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	4,276	4,158
Loans Receivable, Fair Value Disclosure	4,451	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	5,627,829	5,576,535
Other Assets, Fair Value Disclosure	5,622,367	5,570,136
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	5,462	6,399
Servicing Asset at Fair Value, Amount	1,788	1,169
Other Assets, Fair Value Disclosure	3,823	3,674
Other Repossessed Assets	3,496	3,464
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Servicing Asset at Fair Value, Amount	1,788	1,169
Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	5,462	6,399
Other Assets, Fair Value Disclosure	3,823	3,674
Other Repossessed Assets	3,496	3,464
Commercial Real Estate Portfolio Segment [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	3,691	4,059
Commercial Real Estate Portfolio Segment [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	3,691	4,059
Residential Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Assets, Fair Value Disclosure	620	650
Residential Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Assets, Fair Value Disclosure	620	650
Construction Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Assets, Fair Value Disclosure	728	729
Construction Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Assets, Fair Value Disclosure	728	729
Commercial Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Assets, Fair Value Disclosure	2,475	2,295
Commercial Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Assets, Fair Value Disclosure	2,475	2,295
Residential Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	136	705
Residential Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	136	705
Construction Real Estate - Remaining Commercial [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	1,635	1,635
Construction Real Estate - Remaining Commercial [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	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	4,276	4,158
Loans Receivable, Fair Value Disclosure	5,687,392	5,640,620
Other Assets, Fair Value Disclosure	5,677,479	$ 5,629,976
Fair Value [Member] | Commercial Real Estate Portfolio Segment [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	3,691
Fair Value [Member] | Residential Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	136
Fair Value [Member] | Construction Real Estate - Remaining Commercial [Member] | Construction Real Estate [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans Receivable, Fair Value Disclosure	$ 1,635

Fair Value Fair Value (Impaired

Fair Value Fair Value (Impaired Financing Receivables Additional Information) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Schedule of Impaired Financing Receivables Additional Information [Line Items]
Book Value Of Impaired Loans Carried At Fair Value	$ 5,527	$ 6,503
Partial Charge-Offs On Impaired Loans carried at Fair Value	3,341	3,630
Impaired Financing Receivable, Related Allowance	2,468	2,273
impaired Financing Receivable, loans not held at Fair Value, Carrying Amount	42,977	39,472
Impaired Financing Receivable, Recorded Investment	50,907	48,144	$ 50,322
Impaired Loan Fair Value	5,462	6,399
Impaired Financing Receivable, loans not held at Fair Value, Recorded Investment	45,380	41,641
Partial Charge-offs on Impaired Loans carried at Cost	7,616	7,616
Impaired Financing Receivable, Carrying Value	48,439	45,871
Partial Charge-Offs On Impaired Loans	10,957	11,246
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	2,468	2,273
Financing Receivable, not collateral dependent [Domain]
Schedule of Impaired Financing Receivables Additional Information [Line Items]
Impaired Financing Receivable, Related Allowance	2,403	2,169
Commercial Receivables, excluding Commercial, Financial, and Agricultural [Domain]
Schedule of Impaired Financing Receivables Additional Information [Line Items]
Impaired Financing Receivable, Related Allowance	$ 65	$ 104

Revenue from Contracts with C_3

Revenue from Contracts with Customers (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Personal trust and agency accounts	$ 2,301,000	$ 2,126,000
Employee benefit and retirement-related accounts	1,670,000	1,643,000
Investment management and investment advisory agency accounts	2,381,000	2,244,000
Other	371,000	382,000
Non-sufficient funds (NSF) fees	1,616,000	1,834,000
Demand deposit account (DDA) charges	780,000	926,000
Other	163,000	162,000
Credit card	600,000	511,000
HELOC	99,000	99,000
Installment	70,000	64,000
Real estate	1,757,000	2,246,000
Commercial	292,000	1,252,000
Debit card fee income	4,369,000	4,002,000
Bank owned life insurance income	1,006,000	1,009,000
ATM Fees	440,000	524,000
OREO valuation adjustments	(27,000)	(207,000)
Gain on sale of OREO, net	(12,000)	4,321,000
Other components of net periodic benefit income	1,183,000	1,705,000
Other	2,845,000	842,000
Total other income	22,025,000	26,903,000
Net loss on sale of investment securities (2)		(2,271,000)
Gain on equity securities, net	121,000	3,489,000
Bank Servicing [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	2,818,000	4,172,000
Within Scope [Domain]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	1,200,000	1,400,000
Other	1,200,000	1,100,000
Out of Scope [Domain]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Including Assessed Tax	1,600,000	2,800,000
Other	1,600,000	(300,000)
PNB [Member]
Disaggregation of Revenue [Line Items]
Personal trust and agency accounts	2,301,000	2,126,000
Employee benefit and retirement-related accounts	1,670,000	1,643,000
Investment management and investment advisory agency accounts	2,381,000	2,244,000
Other	371,000	382,000
Non-sufficient funds (NSF) fees	1,616,000	1,834,000
Demand deposit account (DDA) charges	780,000	926,000
Other	163,000	162,000
Credit card	597,000	504,000
HELOC	95,000	99,000
Installment	74,000	64,000
Real estate	1,757,000	2,246,000
Commercial	292,000	242,000
Debit card fee income	4,369,000	4,002,000
Bank owned life insurance income	898,000	922,000
ATM Fees	440,000	524,000
OREO valuation adjustments	27,000	30,000
Gain on sale of OREO, net	(12,000)	1,585,000
Other components of net periodic benefit income	1,147,000	1,652,000
Other	1,745,000	1,032,000
Total other income	20,708,000	19,915,000
Net loss on sale of investment securities (2)		(2,271,000)
Gain on equity securities, net	51,000	27,000
GFSC [Member]
Disaggregation of Revenue [Line Items]
Personal trust and agency accounts	0	0
Employee benefit and retirement-related accounts	0	0
Investment management and investment advisory agency accounts	0	0
Other	0	0
Non-sufficient funds (NSF) fees	0	0
Demand deposit account (DDA) charges	0	0
Other	0	0
Credit card	3,000	7,000
HELOC	0	0
Installment	0	0
Real estate	0	0
Commercial	0	0
Debit card fee income	0	0
Bank owned life insurance income	0	0
ATM Fees	0	0
OREO valuation adjustments	0	0
Gain on sale of OREO, net	0	0
Other components of net periodic benefit income	13,000	19,000
Other	16,000	4,000
Total other income	32,000	30,000
Net loss on sale of investment securities (2)		0
Gain on equity securities, net	0	0
All Other [Member]
Disaggregation of Revenue [Line Items]
Personal trust and agency accounts	0	0
Employee benefit and retirement-related accounts	0	0
Investment management and investment advisory agency accounts	0	0
Other	0	0
Non-sufficient funds (NSF) fees	0	0
Demand deposit account (DDA) charges	0	0
Other	0	0
Credit card	0	0
HELOC	4,000	0
Installment	(4,000)	0
Real estate	0	0
Commercial	0	1,010,000
Debit card fee income	0	0
Bank owned life insurance income	108,000	87,000
ATM Fees	0	0
OREO valuation adjustments	0	177,000
Gain on sale of OREO, net	0	2,736,000
Other components of net periodic benefit income	23,000	34,000
Other	1,084,000	(194,000)
Total other income	1,285,000	6,958,000
Net loss on sale of investment securities (2)		0
Gain on equity securities, net	$ 70,000	$ 3,462,000

Subsequent events (Details)

Subsequent events (Details) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2018	Mar. 31, 2019	Jul. 01, 2018	Mar. 31, 2018
Subsequent Event [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets				$ 332,283,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables				272,753,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities				$ 284,231,000
Business Combination, Consideration Transferred		$ 86,203,000
Stock Issued During Period, Shares, Acquisitions		435,457
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable		$ 48,519,000
Payments to Acquire Businesses, Gross		30,684,000
Deposits		$ 6,260,860,000	$ 6,325,212,000
Business Acquisition, Share Price				$ 1.08
Business Acquisition, Transaction Costs			$ 71,000		$ 169,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	$ 757,100,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables	590,800,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities	631,500,000
Business Combination, Consideration Transferred	$ 126,900,000
Stock Issued During Period, Shares, Acquisitions	1,037,205
Payments to Acquire Businesses, Gross	$ 28,600,000
Business Acquisition, Transaction Costs	$ 200,000
Common Stock [Member]
Subsequent Event [Line Items]
Business Acquisition, Share Price				$ 0.01023

Uncategorized Items - prk-20190

Label	Element	Value
Adjustments for New Accounting Pronouncement [Member] | Retained Earnings [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	$ 563,825,000
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	613,926,000
Adjustments for New Accounting Pronouncement [Member] | AOCI Attributable to Parent [Member]
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	(27,449,000)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	$ (49,788,000)