Pathfinder Bancorp (PBHC) 10-Q 11 May 18 2018 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	May 11, 2018
Document And Entity Information [Abstract]
Entity Registrant Name	PATHFINDER BANCORP, INC.
Entity Central Index Key	1,609,065
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		4,302,086
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Trading Symbol	PBHC

Consolidated Statements of Cond

Consolidated Statements of Condition (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ASSETS:
Cash and due from banks	$ 8,468	$ 9,708
Interest-earning deposits (including restricted balances of $5,109 and $6,342, respectively)	9,811	12,283
Total cash and cash equivalents	18,279	21,991
Available-for-sale securities, at fair value	158,799	171,138
Held-to-maturity securities, at amortized cost (fair value of $63,226 and $66,426, respectively)	63,952	66,196
Marketable equity securities, at fair value	528	515
Federal Home Loan Bank stock, at cost	3,405	3,855
Loans	608,049	580,831
Less: Allowance for loan losses	7,451	7,126
Loans receivable, net	600,598	573,705
Premises and equipment, net	16,790	16,117
Accrued interest receivable	3,000	3,047
Foreclosed real estate	108	468
Intangible assets, net	178	182
Goodwill	4,536	4,536
Bank owned life insurance	11,815	11,742
Other assets	9,149	8,280
Total assets	891,137	881,257
Deposits:
Interest-bearing	652,603	633,820
Noninterest-bearing	91,202	89,783
Total deposits	743,805	723,603
Short-term borrowings	20,600	30,600
Long-term borrowings	43,288	43,288
Subordinated loans	15,068	15,059
Accrued interest payable	218	186
Other liabilities	5,720	6,377
Total liabilities	828,699	819,113
Shareholders' equity:
Common stock, par value $0.01; 25,000,000 authorized shares; 4,295,586 and 4,280,227 shares outstanding, respectively	43	43
Additional paid in capital	28,384	28,170
Retained earnings	39,829	39,020
Accumulated other comprehensive loss	(5,012)	(4,208)
Unearned ESOP	(1,169)	(1,214)
Total Pathfinder Bancorp, Inc. shareholders' equity	62,075	61,811
Noncontrolling interest	363	333
Total equity	62,438	62,144
Total liabilities and shareholders' equity	$ 891,137	$ 881,257

Consolidated Statements of Con3

Consolidated Statements of Condition (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ASSETS:
Restricted Cash	$ 5,109	$ 6,342
Held-to-maturity securities at fair value	$ 63,226	$ 66,426
Shareholders' equity:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	25,000,000	25,000,000
Common stock, shares outstanding (in shares)	4,295,586	4,280,227

Consolidated Statements of Inco

Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest and dividend income:
Loans, including fees	$ 6,718	$ 5,741
Debt securities:
Taxable	1,128	781
Tax-exempt	248	249
Dividends	68	54
Federal funds sold and interest earning deposits	47	45
Total interest and dividend income	8,209	6,870
Interest expense:
Interest on deposits	1,345	765
Interest on short-term borrowings	93	295
Interest on long-term borrowings	175	120
Interest on subordinated loans	203	193
Total interest expense	1,816	1,373
Net interest income	6,393	5,497
Provision for loan losses	613	389
Net interest income after provision for loan losses	5,780	5,108
Noninterest income:
Service charges on deposit accounts	274	263
Earnings and gain on bank owned life insurance	73	71
Loan servicing fees	41	36
Net (losses) gains on sales and redemptions of investment securities	(107)	71
Gains on equity securities	13	0
Net gains (losses) on sales of loans and foreclosed real estate	3	(24)
Debit card interchange fees	143	121
Other charges, commissions & fees	455	399
Total noninterest income	895	937
Noninterest expense:
Salaries and employee benefits	3,084	2,850
Building occupancy	591	539
Data processing	479	427
Professional and other services	331	191
Advertising	191	176
FDIC assessments	120	56
Audits and exams	105	84
Other expenses	558	650
Total noninterest expense	5,459	4,973
Income before income taxes	1,216	1,072
Provision for income taxes	182	245
Net income attributable to noncontrolling interest and Pathfinder Bancorp, Inc.	1,034	827
Net income attributable to noncontrolling interest	30	27
Net income attributable to Pathfinder Bancorp Inc.	$ 1,004	$ 800
Earnings per common share - basic	$ 0.24	$ 0.20
Earnings per common share - diluted	0.24	0.19
Dividends per common share	$ 0.06	$ 0.05

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Consolidated Statements of Comprehensive Income [Abstract]
Net Income		$ 1,034	$ 827
Retirement Plans:
Retirement plan net losses recognized in plan expenses		43	37
Unrealized holding (losses) gains on available-for-sale securities
Unrealized holding (losses) gains arising during the period		(1,189)	1,022
Reclassification adjustment for net (losses) gains included in net income		107	(71)
Net unrealized (losses) gains on available-for-sale securities		(1,082)	951
Accretion of net unrealized loss on securities transferred to held-to-maturity	[1]	22	37
Other comprehensive (loss) income, before tax		(1,017)	1,025
Tax effect		266	(410)
Other comprehensive (loss) income, net of tax		(751)	615
Comprehensive income		283	1,442
Comprehensive income, attributable to noncontrolling interest		30	27
Comprehensive income attributable to Pathfinder Bancorp, Inc.		253	1,415
Tax Effect Allocated to Each Component of Other Comprehensive (Loss) Income
Retirement plan net losses recognized in plan expenses		(11)	(14)
Unrealized holding (losses) gains arising during the period		311	(409)
Reclassification adjustment for net (losses) gains included in net income		(28)	28
Accretion of net unrealized loss on securities transferred to held-to-maturity	[1]	(6)	(15)
Income tax effect related to other comprehensive (loss) income		$ 266	$ (410)
[1]	The accretion of the unrealized holding losses in accumulated other comprehensive loss at the date of transfer at September 30, 2013 partially offsets the amortization of the difference between the par value and the fair value of the investment securities at the date of transfer, and is an adjustment of yield.

Consolidated Statements of Chan

Consolidated Statements of Changes in Shareholders' Equity (Unaudited) - USD ($) $ in Thousands		Total	Common Stock [Member]	Additional Paid in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Unearned ESOP [Member]	Non-controlling Interest [Member]
Balance at Dec. 31, 2016		$ 58,361	$ 43	$ 27,483	$ 35,619	$ (3,822)	$ (1,394)	$ 432
Net income		827			800			27
Other comprehensive income (loss), net of tax		615				615
ESOP shares earned		88		43			45
Stock based compensation		94		94
Stock options exercised		56		56
Common stock dividends declared		(203)			(203)
Balance at Mar. 31, 2017		59,838	43	27,676	36,216	(3,207)	(1,349)	459
Balance at Dec. 31, 2017		62,144	43	28,170	39,020	(4,208)	(1,214)	333
Net income		1,034			1,004			30
Other comprehensive income (loss), net of tax		(751)				(751)
ESOP shares earned		94		49			45
Stock based compensation		81		81
Stock options exercised		84		84
Cumulative effect of change in measurement of equity securities	[1]	(53)			53	(53)
Common stock dividends declared		(248)			(248)
Balance at Mar. 31, 2018		$ 62,438	$ 43	$ 28,384	$ 39,829	$ (5,012)	$ (1,169)	$ 363
[1]	Cumulative effect of unrealized gain on marketable equity securities based on the adoption of ASU 2016-01 - Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Liabilities.

Consolidated Statements of Cha7

Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement Of Stockholders Equity [Abstract]
ESOP shares earned (in shares)	6,111	6,111
Dividends per common share	$ 0.06	$ 0.05

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
OPERATING ACTIVITIES
Net income attributable to Pathfinder Bancorp, Inc.	$ 1,004	$ 800
Adjustments to reconcile net income to net cash flows from operating activities:
Provision for loan losses	613	389
Realized (gains) losses on sales, redemptions and calls of:
Real estate acquired through foreclosure	(3)	27
Loans	0	(3)
Available-for-sale investment securities	100	27
Held-to-maturity investment securities	7	(4)
Depreciation	278	247
Amortization of mortgage servicing rights	25	3
Amortization of deferred loan costs	86	24
Amortization of deferred financing from subordinated debt	9	8
Earnings and gain on bank owned life insurance	(73)	(71)
Net amortization of premiums and discounts on investment securities	405	422
Amortization of intangible assets	4	4
Stock based compensation and ESOP expense	175	182
Net change in accrued interest receivable	47	(179)
Net change in other assets and liabilities	(1,208)	(1,356)
Net cash flows from operating activities	1,469	520
INVESTING ACTIVITIES
Purchase of investment securities available-for-sale	(22,294)	(31,434)
Purchase of investment securities held-to-maturity	0	(2,654)
Purchase of Federal Home Loan Bank stock	(2,606)	(3,704)
Proceeds from redemption of Federal Home Loan Bank stock	3,056	3,969
Proceeds from maturities and principal reductions of investment securities available-for-sale	14,918	5,619
Proceeds from maturities and principal reductions of investment securities held-to-maturity	2,121	930
Proceeds from sales, redemptions and calls of:
Available-for-sale investment securities	17,704	18,913
Held-to-maturity investment securities	30	202
Real estate acquired through foreclosure	434	246
Realized gains on hedging activity	0	(94)
Net change in loans	(27,663)	(30,013)
Purchase of premises and equipment	(951)	(794)
Net cash flows from investing activities	(15,251)	(38,814)
FINANCING ACTIVITIES
Net change in demand deposits, NOW accounts, savings accounts, money management deposit accounts, MMDA accounts and escrow deposits	(38)	71,143
Net change in time deposits	5,202	7,210
Net change in brokered deposits	15,038	(19,804)
Net change in short-term borrowings	(10,000)	(21,026)
Proceeds from long-term borrowings	0	15,100
Proceeds from exercise of stock options	84	56
Cash dividends paid to common shareholders	(246)	(212)
Change in noncontrolling interest, net	30	27
Net cash flows from financing activities	10,070	52,494
Change in cash and cash equivalents	(3,712)	14,200
Cash and cash equivalents at beginning of period	21,991	22,419
Cash and cash equivalents at end of period	18,279	36,619
CASH PAID DURING THE PERIOD FOR:
Interest	1,784	1,351
Income taxes	125	0
NON-CASH INVESTING ACTIVITY
Real estate acquired in exchange for loans	71	370
RESTRICTED CASH
Federal Reserve Bank Reserve Requirements included in interest earning deposits	$ 5,109	$ 16,696

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	Note 1: Basis of Presentation The accompanying unaudited consolidated financial statements of Pathfinder Bancorp, Inc., (the “Company”), Pathfinder Bank (the “Bank”) and its other wholly owned subsidiaries have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information, the instructions for Form 10-Q and Article 8 of Regulation S-X. Accordingly, they do not include all of the information and footnotes necessary for a complete presentation of consolidated financial condition, results of operations and cash flows in conformity with generally accepted accounting principles. In the opinion of management, all adjustments, consisting of normal recurring accruals considered necessary for a fair presentation, have been included. Certain amounts in the 2017 consolidated financial statements may have been reclassified to conform to the current period presentation. These reclassifications had no effect on net income or comprehensive income as previously reported. Operating results for the three months ended March 31, 2018 are not necessarily indicative of the results that may be expected for the full year ending December 31, 2018 or any other interim period. The Company's consolidated financial statements are prepared in accordance with accounting principles generally accepted in the United States and follow practices within the banking industry. Application of these principles requires management to make estimates, assumptions, and judgments that affect the amounts reported in the consolidated financial statements and accompanying notes. These estimates, assumptions, and judgments are based on information available as of the date of the financial statements; accordingly, as this information changes, the financial statements could reflect different estimates, assumptions, and judgments. Certain accounting policies inherently have a greater reliance on the use of estimates, assumptions, and judgments and as such have a greater possibility of producing results that could be materially different than originally reported. Estimates, assumptions, and judgments are necessary when assets and liabilities are required to be recorded at fair value or when an asset or liability needs to be recorded contingent upon a future event. Carrying assets and liabilities at fair value inherently results in more financial statement volatility. The fair values and information used to record valuation adjustments for certain assets and liabilities are based on quoted market prices or are provided by unaffiliated third-party sources, when available. When third party information is not available, valuation adjustments are estimated in good faith by management. Although the Company owns, through its subsidiary Pathfinder Risk Management Company, Inc., 51% of the membership interest in FitzGibbons Agency, LLC (“Agency”), the Company is required to consolidate 100% of the Agency within the consolidated financial statements. The 49% of which the Company does not own is accounted for separately as noncontrolling interests within the consolidated financial statements.

New Accounting Pronouncements

New Accounting Pronouncements	3 Months Ended
	Mar. 31, 2018
New Accounting Pronouncements And Changes In Accounting Principles [Abstract]
New Accounting Pronouncements	Note 2: New Accounting Pronouncements The following Table provides a description of accounting standards that were adopted in the first quarter of 2018 as well as standards that are not currently effective but could have an impact on the Company's consolidated financial statements upon adoption. Standard Description Required Date of Implementation Effect on Consolidated Financial Statements Standards Adopted in 2018 Revenue from Contracts with Customers ( ASU 2014-09: Revenue from Contracts with Customers [Topic 606] The core principle of the accounting guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. January 1, 2018 The Company adopted the revenue recognition guidance effective January 1, 2018, and applied the new accounting guidance using a modified retrospective approach for reporting purposes. A significant amount of the Company’s revenues are derived from net interest income on financial assets and liabilities, which are excluded from the scope of the amended guidance. With respect to noninterest income, under the new guidance credit card interchange revenue is now presented net of rewards expense in noninterest income. For the three months ended March 31, 2018 and 2017, the Company recognized credit card rewards expense as a reduction of noninterest income in the amounts of $15,000 and $26,000, respectively. Recognition and Measurement of Financial Assets and Financial Liabilities ( ASU 2016-01: Financial Instruments—Overall [Subtopic 825-10]: Recognition and Measurement of Financial Assets and Financial Liabilities The amended guidance requires equity investments (excluding those accounted for under the equity method of accounting or those that result in consolidation of the investee) be measured at fair value with changes in fair value recognized in net income, public entities to use the exit price when measuring the fair value of financial instruments for disclosure purposes, and an entity to present separately in other comprehensive income a change in the instrument-specific credit risk when the entity has elected to measure a liability at fair value in accordance with the fair value option. January 1, 2018 The Company held marketable equity securities with a fair value of $528,000 in its available-for-sale portfolio at March 31, 2018. Effective January 1, 2018, the change in the fair value of equity securities was recognized in the consolidated statement of income as opposed to AOCI where these changes in fair value had been recognized under previous accounting guidance. This change in the applied guidance resulted in the recognition of $13,000 in unrealized gain from investment in equity securities during the quarter ended March 31, 2018. In addition, this change in the applied guidance resulted in the recognition of $53,000 in additional retained earnings, transferred from AOCI, at January 1, 2018 resulting from the cumulative increases in the fair market value of the marketable equity securities, net of income tax effect, as of that date. These securities have historically fluctuated in value and how these securities could change in value in the future is not predictable. In addition, the new accounting guidance also requires the use of exit pricing in disclosures related to the fair value of financial instruments. At March 31, 2018, the financial assets and liabilities of the Company were valued at a price that represents the Company’s exit price or the price at which these instruments would be sold or transferred. The adoption of the ASU did not materially affect the fair value evaluations of the financial assets and financial liabilities of the Company at the adoption date. Standard Description Required Date of Implementation Effect on Consolidated Financial Statements Standards Adopted in 2018 Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost ( ASU 2017-07: Compensation — Retirement Benefits [Topic 715] Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost The amended guidance requires the service cost component of the net periodic pension cost and net periodic postretirement benefit cost to be reported in the same line item in the income statement as other compensation costs arising from services rendered by the pertinent employees during the period. The amendments also require that the other components of net benefit costs be presented separately from the service cost component. January 1, 2018 The Company adopted the new reporting requirements effective January 1, 2018. The Company has previously reported all of its net periodic pension and postretirement benefit costs in salaries and employee benefits within the consolidated statement of income as components of salaries and employee benefits expense. Information about net periodic pension and postretirement benefit costs that were not service cost-related is included in Note 14 to the annual consolidated financial statements reported on Form 10-K and in Note 5 to this Form 10-Q. Scope of Modification Accounting for Share-Based Payment Awards ( ASU 2016-09: Compensation — Stock Compensation [Topic 718]: Improvements to Employee Share-Based Payment Accounting The amended guidance addresses which changes to the terms and conditions of a share-based payment award require an entity to apply modification accounting. January 1, 2018 The Company adopted the amended guidance on January 1, 2018. The guidance is to be applied on a prospective basis for awards modified on or after the adoption date. There were no such awards granted or modified in the quarter ended March 31, 2018. Restricted Cash ( ASU 2016-18: Statements of Cash Flows [Topic 230]: Restricted Cash The amended guidance requires that restricted cash and restricted cash equivalents be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. In addition, when cash, cash equivalents, and restricted cash or restricted cash equivalents are presented in more than one line item within the statement of financial position, the line items and amounts must be presented on the face of the statement of cash flows or disclosed in the notes to the financial statements. Information about the nature of restrictions on an entity’s cash and cash equivalents must also be disclosed. January 1, 2018 The guidance was applied using a retrospective transition method beginning with the quarter ended March 31, 2018. The Company considers required demand deposit-related reserve balances held at the Federal Reserve Bank to be restricted cash. These amounts are disclosed on the consolidated statements of condition as $5.1 million and $6.3 million at March 31, 2018 and December 31, 2017, respectively. In addition, these amounts are disclosed on the consolidated statements of cash flows as $5.1 million and $16.7 million at March 31, 2018 and 2017, respectively. Classification of Certain Cash Receipts and Cash Payments ( ASU 2016-15: Statement of Cash Flows [Topic 230]: Classification of Certain Cash Receipts and Cash Payments This amendment provides clarifying guidance for classifying cash inflows or outflows on the statement of cash flows where current guidance is unclear or silent. January 1, 2018 The guidance was applied using a retrospective transition method beginning with the quarter ended March 31, 2018. As a result of the application of this guidance, the Company’s purchases and redemptions of Federal Home Loan Bank stock are now disclosed separately on the consolidated statements of cash flows as opposed to a disclosure presented on a net change basis in previous reporting periods. Clarifying the Definition of a Business ( ASU 2017-01: Business Combinations [Topic 805]: Clarifying the Definition of a Business The amended guidance clarifies the definition of a business for purposes of evaluating whether transactions would be accounted for as acquisitions (or disposals) of assets or businesses. January 1, 2018 The guidance was applied using a prospective transition method. The application of the guidance by the Company had no effect on the Company’s consolidated financial statements. Standard Description Required Date of Implementation Effect on Consolidated Financial Statements Standards Adopted in 2018 Share-based Payment Awards ( ASU 2017-11: Earnings per Share [Topic 260] The amended guidance clarifies which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in FASB Topic 18. An entity should account for the effects of a modification unless specific criteria regarding fair value, vesting condition, and classification are met. The current disclosure requirements in FASB Topic 18 apply regardless of whether an entity is required to apply modification accounting under the amendments in this guidance. January 1, 2018 The guidance was applied using a prospective transition method on January 1, 2018. The application of the guidance had had no effect on the Company’s consolidated financial statements as no changes to the terms or conditions of a share-based payment award occurred in the first quarter of 2018. The Company does not expect that this guidance will have a material effect on its consolidated financial statements in the future. Investments - Debt Securities and Regulated Operations ( ASU 2018-04: Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin No. 117 and SEC Release No. 33-9273 [Topics 320 and 980, respectively] This amended guidance primarily relates to changes to GAAP for equity investments categorized as available for sale. This amended guidance supersedes various SEC paragraphs and adds an SEC paragraph pursuant to the issuance of Staff Accounting Bulletin No. 117. In addition, this Accounting Standards Update supersedes various SEC paragraphs and amends one SEC paragraph pursuant to the issuance of SEC Release No. 33-9273. January 1, 2018 The guidance was applied using a prospective transition method. The application of the guidance had had no effect on the Company’s consolidated financial statements. The Company does not expect that this guidance will have a material effect on its consolidated financial statements in the future. Standard Description Required Date of Implementation Effect on Consolidated Financial Statements Standards Not Yet Adopted as of March 31, 2018 Income Taxes ( ASU 2018-05: Amendments to SEC Paragraphs Pursuant to SEC Staff Accounting Bulletin NO. 118 [Topic 740] The amended guidance clarifies financial statement disclosures that include the reporting period in which the Tax Act was enacted and specifies how a reporting entity may reflect the income tax effects of the Act in which the accounting under ASC Topic 740 is complete. These completed amounts would not be provisional amounts. A reporting entity would then also report provisional amounts for those specific income tax effects of the Act for which the accounting under ASC Topic 740 will be incomplete but a reasonable estimate can be determined. For any specific income tax effects of the Act for which a reasonable estimate cannot be determined, the reporting entity would not report provisional amounts and would continue to apply ASC Topic 740 based on the provisions of the tax laws that were in effect immediately prior to the Act being enacted. For those income tax effects for which the reporting entity was not able to determine a reasonable estimate (such that no related provisional amount was reported for the reporting period in which the Act was enacted), the reporting entity would report provisional amounts in the first reporting period in which a reasonable estimate can be determined. The measurement period begins in the reporting period that includes the Act’s enactment date and ends when an entity has obtained, prepared, and analyzed the information that was needed in order to complete the accounting requirements under ASC Topic 740. January 1, 2018 The guidance was applied using a prospective transition method. The application of the guidance had had no effect on the Company’s consolidated financial statements. The Company does not expect that this guidance will have a material effect on its consolidated financial statements in the future. Standard Description Required Date of Implementation Effect on Consolidated Financial Statements Standards Not Yet Adopted as of March 31, 2018 Leases ( ASU 2016-02: Leases [Topic 842] The new guidance requires lessees to record a right-of-use asset and a lease liability for all leases with a term greater than 12 months. While the guidance requires all leases to be recognized in the balance sheet, there continues to be a differentiation between finance leases and operating leases for purposes of income statement recognition and cash flow statement presentation. For finance leases, interest on the lease liability and amortization of the right-of-use asset will be recognized separately in the statement of income. Repayments of principal on those lease liabilities will be classified within financing activities and payments of interest on the lease liability will be classified within operating activities in the statement of cash flows. For operating leases, a single lease cost is recognized in the statement of income and allocated over the lease term, generally on a straight-line basis. All cash payments are presented within operating activities in the statement of cash flows. The accounting applied by lessors is largely unchanged from existing GAAP, however, the guidance eliminates the accounting model for leveraged leases for leases that commence after the effective date of the guidance. January 1, 2019 (Early adoption permitted) The Company occupies certain banking offices and uses certain equipment under noncancelable operating lease agreements which currently are not reflected in its consolidated balance sheet. Upon adoption of the guidance, the Company expects to report increased assets and increased liabilities as a result of recognizing right-of-use assets and lease liabilities on its consolidated statements of condition. The Company was committed to $1.1 million of minimum lease payments under noncancelable operating lease agreements at March 31, 2018. The Company does not expect the new guidance will have a material impact to its consolidated statement of income. Improvements to Accounting for Hedging Activities ( ASU 2017-12: Derivatives and Hedging [Topic 815]: Targeted Improvements to Accounting for Hedging Activities The amended guidance expands and clarifies hedge accounting for nonfinancial and financial risk components, aligns the recognition and presentation of the effects of the hedging instrument and hedged item in the financial statements, and simplifies the requirements for assessing effectiveness in a hedging relationship. January 1, 2019 (Early adoption permitted) The Company is analyzing the potential effects of this guidance and anticipates adopting the amended guidance in the second quarter of 2018. The Company does not expect such adoption will have a material impact on its consolidated financial statements. Premium Amortization on Purchased Callable Debt Securities ( ASU 2017-08: Receivables—Nonrefundable Fees and Other Costs [Subtopic 310-20]: Premium Amortization on Purchased Callable Debt Securities The amended guidance requires the premium on callable debt securities to be amortized to the earliest call date. The amendments do not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. January 1, 2019 (Early adoption permitted) The amendments should be applied on a modified retrospective basis through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The Company does not expect the guidance to have a material impact on its consolidated financial statements. Standard Description Required Date of Implementation Effect on Consolidated Financial Statements Standards Not Yet Adopted as of March 31, 2018 Measurement of Credit Losses on Financial Instruments ( ASU 2016-13: Financial Instruments—Credit Losses [Topic 326]: Measurement of Credit Losses on Financial Instruments The amended guidance replaces the current incurred loss model for determining the allowance for credit losses. The guidance requires financial assets measured at amortized cost to be presented at the net amount expected to be collected. The allowance for credit losses will represent a valuation account that is deducted from the amortized cost basis of the financial assets to present their net carrying value at the amount expected to be collected. The income statement will reflect the measurement of credit losses for newly recognized financial assets as well as expected increases or decreases of expected credit losses that have taken place during the period. When determining the allowance, expected credit losses over the contractual term of the financial asset(s) (taking into account prepayments) will be estimated considering relevant information about past events, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. The amended guidance also requires recording an allowance for credit losses for purchased financial assets with a more-than-insignificant amount of credit deterioration since origination. The initial allowance for these assets will be added to the purchase price at acquisition rather than being reported as an expense. Subsequent changes in the allowance will be recorded through the income statement as an expense adjustment. In addition, the amended guidance requires credit losses relating to available-for-sale debt securities to be recorded through an allowance for credit losses. The calculation of credit losses for available-for-sale securities will be similar to how it is determined under existing guidance. January 1, 2020 (Early adoption permitted as of January 1, 2019) The Company is assessing the new guidance to determine what modifications to existing credit estimation processes may be required. The Company expects that the new guidance will result in an increase in its allowance for credit losses as a result of considering credit losses over the expected life of its loan and debt securities portfolios. Increases in the level of allowances will also reflect new requirements to include estimated credit losses on investment securities classified as held-to-maturity, if any. The Company has formed an Implementation Committee, whose membership includes representatives of senior management, to develop plans that will encompass: (1) internal methodology changes (2) data collection and management activities, (3) internal communication requirements, and (4) estimation of the projected impact of this guidance. The amount of any change in the allowance for credit losses resulting from the new guidance will ultimately be impacted by the provisions of this guidance as well as by the loan and debt security portfolios composition and asset quality at the adoption date, and economic conditions and forecasts at the time of adoption. Simplifying the Test for Goodwill Impairment ( ASU 2017-04: Intangibles—Goodwill and Other [Topic 350]: Simplifying the Test for Goodwill Impairment The amended guidance eliminates Step 2 from the goodwill impairment test. January 1, 2020 (Early adoption permitted) The amendments should be applied using a prospective transition method. The Company does not expect the guidance will have a material impact on its consolidated financial statements, unless at some point in the future one of its reporting units were to fail Step 1 of the goodwill impairment test.

Earnings per Common Share

Earnings per Common Share	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Earnings per Common Share	Note 3: Earnings per Common Share Basic earnings per share are calculated by dividing net income available to common shareholders by the weighted average number of common shares outstanding during the period. Net income available to common shareholders is net income to Pathfinder Bancorp, Inc. less the total of preferred dividends declared, if any. Diluted earnings per share include the potential dilutive effect that could occur upon the assumed exercise of issued stock options using the Treasury Stock method. Anti-dilutive stock options, not included in the computation below, were -0- and $92,261 for the three months ended March 31, 2018 and March 31, 2017, respectively. Unallocated common shares held by the ESOP are not included in the weighted-average number of common shares outstanding for purposes of calculating earnings per common share until they are committed to be released to plan participants. The following table sets forth the calculation of basic and diluted earnings per share. Three months ended March 31, (In thousands, except per share data) 2018 2017 Basic Earnings Per Common Share Net income available to common shareholders $ 1,004 $ 800 Weighted average common shares outstanding 4,119 4,052 Basic earnings per common share $ 0.24 $ 0.20 Diluted Earnings Per Common Share Net income available to common shareholders $ 1,004 $ 800 Weighted average common shares outstanding 4,119 4,052 Effect of assumed exercise of stock options 117 102 Diluted weighted average common shares outstanding 4,236 4,154 Diluted earnings per common share $ 0.24 $ 0.19

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 2018
Investments Debt And Equity Securities [Abstract]
Investment Securities	Note 4: Investment Securities The amortized cost and estimated fair value of investment securities are summarized as follows: March 31, 2018 Gross Gross Estimated Amortized Unrealized Unrealized Fair (In thousands) Cost Gains Losses Value Available-for-Sale Portfolio Debt investment securities: US Treasury, agencies and GSEs $ 23,296 $ - $ (192 ) $ 23,104 State and political subdivisions 11,770 - (384 ) 11,386 Corporate 12,086 155 (158 ) 12,083 Asset backed securities 6,136 5 (75 ) 6,066 Residential mortgage-backed - US agency 34,534 20 (806 ) 33,748 Collateralized mortgage obligations - US agency 56,557 - (1,662 ) 54,895 Collateralized mortgage obligations - Private label 17,503 18 (199 ) 17,322 Total 161,882 198 (3,476 ) 158,604 Equity investment securities: Common stock - financial services industry 195 - - 195 Total 195 - - 195 Total available-for-sale $ 162,077 $ 198 $ (3,476 ) $ 158,799 Held-to-Maturity Portfolio Debt investment securities: US Treasury, agencies and GSEs $ 4,953 $ 1 $ (38 ) $ 4,916 State and political subdivisions 33,584 421 (646 ) 33,359 Corporate 8,268 113 (248 ) 8,133 Residential mortgage-backed - US agency 6,619 1 (75 ) 6,545 Collateralized mortgage obligations - US agency 7,417 21 (234 ) 7,204 Collateralized mortgage obligations - Private label 3,111 - (42 ) 3,069 Total held-to-maturity $ 63,952 $ 557 $ (1,283 ) $ 63,226 December 31, 2017 Gross Gross Estimated Amortized Unrealized Unrealized Fair (In thousands) Cost Gains Losses Value Available-for-Sale Portfolio Debt investment securities: US Treasury, agencies and GSEs $ 41,489 $ 1 $ (154 ) $ 41,336 State and political subdivisions 13,960 12 (291 ) 13,681 Corporate 8,584 108 (92 ) 8,600 Asset backed securities 6,662 12 (30 ) 6,644 Residential mortgage-backed - US agency 36,214 23 (495 ) 35,742 Collateralized mortgage obligations - US agency 54,481 - (1,133 ) 53,348 Collateralized mortgage obligations - Private label 11,193 62 (203 ) 11,052 Total 172,583 218 (2,398 ) 170,403 Equity investment securities: Common stock - financial services industry 663 72 - 735 Total 663 72 - 735 Total available-for-sale $ 173,246 $ 290 $ (2,398 ) $ 171,138 Held-to-Maturity Portfolio Debt investment securities: US Treasury, agencies and GSEs $ 4,948 $ 14 $ (14 ) $ 4,948 State and political subdivisions 35,130 641 (311 ) 35,460 Corporate 8,311 151 (159 ) 8,303 Residential mortgage-backed - US agency 6,853 53 (10 ) 6,896 Collateralized mortgage obligations - US agency 7,574 83 (215 ) 7,442 Collateralized mortgage obligations - Private label 3,380 7 (10 ) 3,377 Total held-to-maturity $ 66,196 $ 949 $ (719 ) $ 66,426 The amortized cost and estimated fair value of debt investments at March 31, 2018 by contractual maturity are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without penalties. Available-for-Sale Held-to-Maturity Amortized Estimated Amortized Estimated (In thousands) Cost Fair Value Cost Fair Value Due in one year or less $ 11,265 $ 11,225 $ 1,230 $ 1,225 Due after one year through five years 22,661 22,444 10,320 10,344 Due after five years through ten years 11,917 11,926 17,007 17,296 Due after ten years 7,445 7,044 18,248 17,543 Sub-total 53,288 52,639 46,805 46,408 Residential mortgage-backed - US agency 34,534 33,748 6,619 6,545 Collateralized mortgage obligations - US agency 56,557 54,895 7,417 7,204 Collateralized mortgage obligations - Private label 17,503 17,322 3,111 3,069 Totals $ 161,882 $ 158,604 $ 63,952 $ 63,226 The Company’s investment securities’ gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, are as follows: March 31, 2018 Less than Twelve Months Twelve Months or More Total Number of Number of Number of Individual Unrealized Fair Individual Unrealized Fair Individual Unrealized Fair (Dollars in thousands) Securities Losses Value Securities Losses Value Securities Losses Value Available-for-Sale Portfolio US Treasury, agencies and GSE's 3 $ (161 ) $ 14,117 3 $ (31 ) $ 8,968 6 $ (192 ) $ 23,085 State and political subdivisions 15 (76 ) 3,684 10 (308 ) 4,588 25 (384 ) 8,272 Corporate 6 (49 ) 3,783 1 (109 ) 1,685 7 (158 ) 5,468 Asset backed securities 3 (61 ) 3,841 1 (14 ) 740 4 (75 ) 4,581 Residential mortgage-backed - US agency 15 (309 ) 20,337 9 (497 ) 10,189 24 (806 ) 30,526 Collateralized mortgage obligations - US agency 17 (348 ) 26,155 21 (1,314 ) 25,494 38 (1,662 ) 51,649 Collateralized mortgage obligations - Private label 7 (199 ) 14,424 - - - 7 (199 ) 14,424 Totals 66 $ (1,203 ) $ 86,341 45 $ (2,273 ) $ 51,664 111 $ (3,476 ) $ 138,005 Held-to-Maturity Portfolio US Treasury, agencies and GSE's 3 $ (16 ) $ 2,964 1 $ (22 ) $ 978 4 $ (38 ) $ 3,942 State and political subdivisions 10 (201 ) 7,268 11 (445 ) 8,391 21 (646 ) 15,659 Corporate 3 (51 ) 2,096 2 (197 ) 2,053 5 (248 ) 4,149 Residential mortgage-backed - US agency 9 (75 ) 5,476 - - - 9 (75 ) 5,476 Collateralized mortgage obligations - US agency 2 (234 ) 4,237 - - - 2 (234 ) 4,237 Collateralized mortgage obligations - Private label 1 (24 ) 2,051 1 (18 ) 1,018 2 (42 ) 3,069 Totals 28 $ (601 ) $ 24,092 15 $ (682 ) $ 12,440 43 $ (1,283 ) $ 36,532 December 31, 2017 Less than Twelve Months Twelve Months or More Total Number of Number of Number of Individual Unrealized Fair Individual Unrealized Fair Individual Unrealized Fair (Dollars in thousands) Securities Losses Value Securities Losses Value Securities Losses Value Available-for-Sale Portfolio US Treasury, agencies and GSE's 5 $ (105 ) $ 27,359 4 $ (49 ) $ 13,957 9 $ (154 ) $ 41,316 State and political subdivisions 18 (24 ) 2,480 12 (267 ) 5,041 30 (291 ) 7,521 Corporate 2 (19 ) 1,791 1 (73 ) 1,727 3 (92 ) 3,518 Asset backed securities 2 (17 ) 3,123 1 (13 ) 742 3 (30 ) 3,865 Residential mortgage-backed - US agency 15 (159 ) 21,551 9 (336 ) 10,463 24 (495 ) 32,014 Collateralized mortgage obligations - US agency 14 (195 ) 23,790 21 (938 ) 25,395 35 (1,133 ) 49,185 Collateralized mortgage obligations - Private label 4 (203 ) 7,439 - - - 4 (203 ) 7,439 Totals 60 $ (722 ) $ 87,533 48 $ (1,676 ) $ 57,325 108 $ (2,398 ) $ 144,858 Held-to-Maturity Portfolio US Treasury, agencies and GSE's 2 $ (2 ) $ 1,990 1 $ (12 ) $ 988 3 $ (14 ) $ 2,978 State and political subdivisions 8 (55 ) 5,668 11 (256 ) 8,644 19 (311 ) 14,312 Corporate 3 (10 ) 1,412 1 (149 ) 2,087 4 (159 ) 3,499 Residential mortgage-backed - US agency 2 (10 ) 1,909 - - - 2 (10 ) 1,909 Collateralized mortgage obligations - US agency 2 (215 ) 4,418 - - - 2 (215 ) 4,418 Collateralized mortgage obligations - Private label 1 (10 ) 1,119 - - - 1 (10 ) 1,119 Totals 18 (302 ) 16,516 13 (417 ) 11,719 31 (719 ) $ 28,235 Excluding the effects of changes in the characteristics of individual debt securities that potentially give rise to other-than-temporary impairment (“OTTI”), as described below, the fair market value of a debt security as of a particular measurement date is highly dependent upon prevailing market and economic environmental factors at the measurement date relative to the prevailing market and economic environmental factors present at the time the debt security was acquired. The most significant market and environmental factors include, but are not limited to (1) the general level of interest rates, (2) the relationship between shorter-term interest rates and longer-term interest rates (referred to as the “slope” of the interest rate yield curve), (3) general bond market liquidity, (4) the recent and expected near-term volume of new issuances of similar debt securities, and (5) changes in the market values of individual loan collateral underlying mortgage-backed debt securities. Changes in interest rates affect the fair market values of debt securities by influencing the discount rate applied to the securities’ future expected cash flows. The higher the discount rate, the lower the resultant security price. Conversely, the lower the discount rate, the higher the resultant security price. In addition, the cumulative amount and timing of undiscounted cash flows of debt securities may be also affected by changes in interest rates. For any given level of movement in the general market and economic environmental factors described above, the magnitude of any particular debt security’s price changes will also depend heavily upon security-specific factors such as (1) the duration of the security, (2) imbedded optionality contractually granted to the issuer of the security with respect to principal prepayments, and (3) changes in the level of market premiums demanded by investors for securities with imbedded credit risk (where applicable). The Company conducts a formal review of investment securities on a quarterly basis for the presence of OTTI. The Company assesses whether OTTI is present when the fair value of a debt security is less than its amortized cost basis at the statement of condition date. Under these circumstances, OTTI is considered to have occurred (1) if we intend to sell the security; (2) if it is “more likely than not” we will be required to sell the security before recovery of its amortized cost basis; or (3) the present value of expected cash flows is not anticipated to be sufficient to recover the entire amortized cost basis. The guidance requires that credit-related OTTI is recognized in earnings while non-credit-related OTTI on securities not expected to be sold is recognized in other comprehensive income (“OCI”). Non-credit-related OTTI is based on other factors, including illiquidity and changes in the general interest rate environment. Presentation of OTTI is made in the consolidated statement of income on a gross basis, including both the portion recognized in earnings as well as the portion recorded in OCI. The gross OTTI would then be offset by the amount of non-credit-related OTTI, showing the net as the impact on earnings. Management does not believe any individual unrealized loss in securities within the portfolio as of March 31, 2018 represents OTTI. At March 31, 2018, the Bank had the following securities, in a loss position for 12 months or more relative to their amortized historical cost, which were deemed to have no credit impairment, thus, the disclosed unrealized losses relate directly to changes in interest rates subsequent to the acquisition of the individual securities. The Company does not intend to sell these securities, nor is it more likely than not that the Company will be required to sell these securities prior to the recovery of the amortized cost. • Ten state and political subdivision securities, categorized as available-for-sale, with an aggregate amortized historical cost of $4.9 million and an aggregate market value of $4.6 million (unrealized aggregate loss of $308,000, or 6.73%). Each of the securities maintains a credit rating established by one or more nationally-recognized statistical rating organization (“NRSRO”) that is well above the minimum investment grade and, therefore, no credit-related OTTI is deemed to be present. • One corporate security, categorized as available-for-sale, with an amortized historical cost of $1.8 million and an aggregate market value of $1.7 million (unrealized loss of $109,000, or 6.45%). This security maintains a credit rating established by one or more NRSRO above the minimum investment grade and, therefore, no credit-related OTTI is deemed to be present. • One privately-issued mortgage-backed security, categorized as available-for-sale, with an amortized historical cost of $754,000 and an aggregate market value of $740,000 (unrealized loss of $14,000, or 1.84%). The security is rated at the highest investment grade rating by one or more NRSRO and therefore, no credit-related OTTI is deemed to be present. • One privately-issued mortgage-backed security, categorized as available-for-sale, with an amortized historical cost of $1.9 million and an aggregate market value of $1.8 million (unrealized loss of $56,000, or 3.11%). The security was not rated at its issuance by any NRSRO but remains significantly collateralized through subordination. Therefore, no credit-related OTTI is deemed to be present. • One privately-issued mortgage-backed security, categorized as available-for-sale, with an amortized historical cost of $1.2 million and an aggregate market value of $1.2 million (unrealized loss of $42,000, or 3.61%). The security is rated at the highest investment grade rating by one or more NRSRO and therefore, no credit-related OTTI is deemed to be present. • Eleven state and political subdivision securities, categorized as held-to-maturity, with an aggregate amortized historical cost of $8.8 million and an aggregate market value of $8.4 million (unrealized aggregate loss of $445,000, or 5.30%). Each of the securities maintains a credit rating established by one or more NRSRO that is well above the minimum investment grade and, therefore, no credit-related OTTI is deemed to be present. • Two corporate securities, categorized as held-to-maturity, with an aggregate amortized historical cost of $2.3 million and an aggregate market value of $2.1 million (unrealized aggregate loss of $197,000, or 9.61%). This security maintains a credit rating established by one or more NRSRO well above the minimum investment grade and, therefore, no credit-related OTTI is deemed to be present. • One privately-issued mortgage-backed securities, categorized as held-to-maturity, with an amortized historical cost of $1.0 million and an aggregate market value of $1.0 million (unrealized loss of $18,000, or 1.82%). The security was not rated at its issuance by any NRSRO but remains significantly collateralized through subordination. Therefore, no credit-related OTTI is deemed to be present. All other securities with market values less than their amortized historical costs are issued by United States agencies or government sponsored enterprises and consist of mortgage-backed securities, collateralized mortgage obligations and direct agency financings. These positions in US government agency and government-sponsored enterprises are deemed to have no credit impairment, thus, the disclosed unrealized losses relate directly to changes in interest rates subsequent to the acquisition of the individual securities. The Company does not intend to sell these securities, nor is it more likely than not that the Company will be required to sell these securities prior to the recovery of the amortized cost. In determining whether OTTI has occurred for equity securities, the Company considers the applicable factors described above and the length of time the equity security’s fair value has been below the carrying amount. The Company had no equity securities that were impaired at March 31, 2018 or December 31, 2017. Gross realized gains (losses) on sales of securities for the indicated periods are detailed below: For the three months ended March 31, (In thousands) 2018 2017 Realized gains on investments $ 27 $ 78 Realized gains on hedging activity - 94 Realized losses on investments (134 ) (101 ) $ (107 ) $ 71 Gains on equity securities 13 - $ 13 $ - As of March 31, 2018 and December 31, 2017, securities with a fair value of $98.2 million and $113.0 million, respectively, were pledged to collateralize certain municipal deposit relationships. As of the same dates, securities with a fair value of $18.8 million and $19.9 million were pledged against certain borrowing arrangements. Management has reviewed its loan and mortgage-backed securities portfolios and determined that, to the best of its knowledge, little exposure exists to sub-prime or other high-risk residential mortgages. With limited exceptions in the Company’s investment portfolio involving the most senior tranches of securitized bonds, the Company is not in the practice of investing in, or originating, these types of investments or loans.

Pension and Postretirement Bene

Pension and Postretirement Benefits	3 Months Ended
	Mar. 31, 2018
Compensation And Retirement Disclosure [Abstract]
Pension and Postretirement Benefits	Note 5: Pension and Postretirement Benefits The Company has a noncontributory defined benefit pension plan covering most employees. The plan provides defined benefits based on years of service and final average salary. On May 14, 2012, the Company informed its employees of its decision to freeze participation and benefit accruals under the plan, primarily to reduce some of the volatility in earnings that can accompany the maintenance of a defined benefit plan. The plan was frozen on June 30, 2012. Compensation earned by employees up to June 30, 2012 is used for purposes of calculating benefits under the plan but there are no future benefit accruals after this date. Participants as of June 30, 2012 will continue to earn vesting credit with respect to their frozen accrued benefits as they continue to work. In addition, the Company provides certain health and life insurance benefits for a limited number of eligible retired employees. The healthcare plan is contributory with participants’ contributions adjusted annually; the life insurance plan is noncontributory. Employees with less than 14 years of service as of January 1, 1995, are not eligible for the health and life insurance retirement benefits. The composition of net periodic pension plan and postretirement plan costs for the indicated periods is as follows: Pension Benefits Postretirement Benefits For the three months ended March 31, (In thousands) 2018 2017 2018 2017 Service cost $ - $ - $ - $ - Interest cost 118 118 5 2 Expected return on plan assets (259 ) (236 ) - - Amortization of prior service cost/(credits) - - (1 ) - Amortization of net losses/(gains) 41 39 3 (2 ) Net periodic benefit plan (benefit) cost $ (100 ) $ (79 ) $ 7 $ - The Company will evaluate the need for further contributions to the defined benefit pension plan during 2018. The prepaid pension asset is recorded in other assets on the statement of condition as of March 31, 2018 and December 31, 2017.

Loans

Loans	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
Loans	Note 6: Loans Major classifications of loans at the indicated dates are as follows: March 31, December 31, (In thousands) 2018 2017 Residential mortgage loans: 1-4 family first-lien residential mortgages $ 219,059 $ 216,793 Construction 5,559 5,558 Total residential mortgage loans 224,618 222,351 Commercial loans: Real estate 206,951 192,525 Lines of credit 52,482 51,131 Other commercial and industrial 60,385 50,251 Tax exempt loans 10,233 10,405 Total commercial loans 330,051 304,312 Consumer loans: Home equity and junior liens 26,116 25,935 Other consumer 27,601 28,646 Total consumer loans 53,717 54,581 Total loans 608,386 581,244 Net deferred loan fees (337 ) (413 ) Less allowance for loan losses (7,451 ) (7,126 ) Loans receivable, net $ 600,598 $ 573,705 Although the Bank may occasionally purchase or fund loan participation interests outside of its primary market areas, the Bank generally originates residential mortgage, commercial, and consumer loans largely to customers throughout Oswego and Onondaga counties. Although the Bank has a diversified loan portfolio, a substantial portion of its borrowers’ abilities to honor their loan contracts is dependent upon the counties’ employment and economic conditions. The Bank acquired $15.6 million and $10.2 million of loans originated by an unrelated financial institution, located outside of the Bank’s market area, in January 2017 and April 2017, respectively. The acquired loan pools represented a 90% participating interest in a total of 1,231 loans secured by liens on automobiles with maturities ranging primarily from two to six years. These loans will be serviced through their respective maturities by the originating financial institution. At March 31, 2018 there were 1,030 loans outstanding with a remaining outstanding carrying value of $17.8 million. Since the acquisition of these loan pools, a total of seven loans, with a combined outstanding balance of $58,300, have been charged-off as uncollectible. As of March 31, 2018 and December 31, 2017, residential mortgage loans with a carrying value of $154.6 million and $148.1 million, respectively, have been pledged by the Company to the Federal Home Loan Bank of New York (“FHLBNY”) under a blanket collateral agreement to secure the Company’s line of credit and term borrowings. Loan Origination / Risk Management The Company’s lending policies and procedures are presented in Note 5 to the audited consolidated financial statements included in the 2017 Annual Report on Form 10-K filed with the Securities and Exchange Commission on March 30, 2018 and have not changed. As part of the execution of the Company’s overall balance sheet management strategies, the Bank will acquire participating interests in loans originated by unrelated third parties on a sporadic basis. The purchase of participations in loans that are originated by third parties only occurs after the completion of thorough pre-acquisition due diligence. Loans in which the Company acquires a participating interest are determined to meet, in all material respects, the Company’s internal underwriting policies, including credit and collateral suitability thresholds, prior to acquisition. In addition, the financial condition of the originating financial institutions, which are generally retained as the ongoing loan servicing provider for participations acquired by the Bank, are analyzed prior to the acquisition of the participating interests and monitored on a regular basis thereafter for the life of those interests. To develop and document a systematic methodology for determining the allowance for loan losses, the Company has divided the loan portfolio into three portfolio segments, each with different risk characteristics but with similar methodologies for assessing risk. Each portfolio segment is broken down into loan classes where appropriate. Loan classes contain unique measurement attributes, risk characteristics, and methods for monitoring and assessing risk that are necessary to develop the allowance for loan losses. Unique characteristics such as borrower type, loan type, collateral type, and risk characteristics define each class. The following table illustrates the portfolio segments and classes for the Company’s loan portfolio: Portfolio Segment Class Residential Mortgage Loans 1-4 family first-lien residential mortgages Construction Commercial Loans Real estate Lines of credit Other commercial and industrial Tax exempt loans Consumer Loans Home equity and junior liens Other consumer The following tables present the classes of the loan portfolio, not including net deferred loan costs, summarized by the aggregate pass rating and the classified ratings of special mention, substandard and doubtful within the Company's internal risk rating system as of the dates indicated: As of March 31, 2018 Special (In thousands) Pass Mention Substandard Doubtful Total Residential mortgage loans: 1-4 family first-lien residential mortgages $ 214,151 $ 927 $ 1,410 $ 2,571 $ 219,059 Construction 5,559 - - - 5,559 Total residential mortgage loans 219,710 927 1,410 2,571 224,618 Commercial loans: Real estate 201,595 1,357 1,943 2,056 206,951 Lines of credit 51,686 218 518 60 52,482 Other commercial and industrial 58,585 816 688 296 60,385 Tax exempt loans 10,233 - - - 10,233 Total commercial loans 322,099 2,391 3,149 2,412 330,051 Consumer loans: Home equity and junior liens 25,703 85 173 155 26,116 Other consumer 27,453 139 9 - 27,601 Total consumer loans 53,156 224 182 155 53,717 Total loans $ 594,965 $ 3,542 $ 4,741 $ 5,138 $ 608,386 As of December 31, 2017 Special (In thousands) Pass Mention Substandard Doubtful Total Residential mortgage loans: 1-4 family first-lien residential mortgages $ 211,825 $ 891 $ 1,869 $ 2,208 $ 216,793 Construction 5,558 - - - 5,558 Total residential mortgage loans 217,383 891 1,869 2,208 222,351 Commercial loans: Real estate 187,073 1,372 2,024 2,056 192,525 Lines of credit 50,353 195 523 60 51,131 Other commercial and industrial 48,892 407 532 420 50,251 Tax exempt loans 10,405 - - - 10,405 Total commercial loans 296,723 1,974 3,079 2,536 304,312 Consumer loans: Home equity and junior liens 25,396 61 304 174 25,935 Other consumer 28,584 55 7 - 28,646 Total consumer loans 53,980 116 311 174 54,581 Total loans $ 568,086 $ 2,981 $ 5,259 $ 4,918 $ 581,244 Management has reviewed its loan portfolio and determined that, to the best of its knowledge, no material exposure exists to sub-prime or other high-risk residential mortgages. The Company is not in the practice of originating these types of loans. Nonaccrual and Past Due Loans Loans are placed on nonaccrual when the contractual payment of principal and interest has become 90 days past due or management has serious doubts about further collectability of principal or interest, even though the loan may be currently performing. Loans are considered past due if the required principal and interest payments have not been received within thirty days of the payment due date. An age analysis of past due loans, not including net deferred loan costs, segregated by portfolio segment and class of loans, as of March 31, 2018 and December 31, 2017, are detailed in the following tables: As of March 31, 2018 30-59 Days 60-89 Days 90 Days Past Due Past Due and Total Total Loans (In thousands) And Accruing And Accruing Over Past Due Current Receivable Residential mortgage loans: 1-4 family first-lien residential mortgages $ 823 $ 235 $ 2,116 $ 3,174 $ 215,885 $ 219,059 Construction - - - - 5,559 5,559 Total residential mortgage loans 823 235 2,116 3,174 221,444 224,618 Commercial loans: Real estate 4,410 492 2,928 7,830 199,121 206,951 Lines of credit 850 88 171 1,109 51,373 52,482 Other commercial and industrial 363 115 978 1,456 58,929 60,385 Tax exempt loans - - - - 10,233 10,233 Total commercial loans 5,623 695 4,077 10,395 319,656 330,051 Consumer loans: Home equity and junior liens 18 - 205 223 25,893 26,116 Other consumer 136 73 56 265 27,336 27,601 Total consumer loans 154 73 261 488 53,229 53,717 Total loans $ 6,600 $ 1,003 $ 6,454 $ 14,057 $ 594,329 $ 608,386 As of December 31, 2017 30-59 Days 60-89 Days 90 Days Past Due Past Due and Total Total Loans (In thousands) And Accruing And Accruing Over Past Due Current Receivable Residential mortgage loans: 1-4 family first-lien residential mortgages $ 1,196 $ 925 $ 2,088 $ 4,209 $ 212,584 $ 216,793 Construction - - - - 5,558 5,558 Total residential mortgage loans 1,196 925 2,088 4,209 218,142 222,351 Commercial loans: Real estate 720 2,056 1,545 4,321 188,204 192,525 Lines of credit 1,482 31 132 1,645 49,486 51,131 Other commercial and industrial 575 60 766 1,401 48,850 50,251 Tax exempt loans - - - - 10,405 10,405 Total commercial loans 2,777 2,147 2,443 7,367 296,945 304,312 Consumer loans: Home equity and junior liens 94 74 300 468 25,467 25,935 Other consumer 192 50 63 305 28,341 28,646 Total consumer loans 286 124 363 773 53,808 54,581 Total loans $ 4,259 $ 3,196 $ 4,894 $ 12,349 $ 568,895 $ 581,244 Nonaccrual loans, segregated by class of loan, were as follows: March 31, December 31, (In thousands) 2018 2017 Residential mortgage loans: 1-4 family first-lien residential mortgages $ 2,116 $ 2,088 2,116 2,088 Commercial loans: Real estate 2,928 1,545 Lines of credit 171 132 Other commercial and industrial 978 766 4,077 2,443 Consumer loans: Home equity and junior liens 205 300 Other consumer 56 63 261 363 Total nonaccrual loans $ 6,454 $ 4,894 The Company is required to disclose certain activities related to Troubled Debt Restructurings (“TDR”) in accordance with accounting guidance. Certain loans have been modified in a TDR where economic concessions have been granted to a borrower who is experiencing, or expected to experience, financial difficulties. These economic concessions could include a reduction in the loan interest rate, extension of payment terms, reduction of principal amortization, or other actions that it would not otherwise consider for a new loan with similar risk characteristics. The Company is required to disclose new TDRs for each reporting period for which an income statement is being presented. The pre-modification outstanding recorded investment is the principal loan balance less the provision for loan losses before the loan was modified as a TDR. The post-modification outstanding recorded investment is the principal balance less the provision for loan losses after the loan was modified as a TDR. Additional provision for loan losses is the change in the allowance for loan losses between the pre-modification outstanding recorded investment and post-modification outstanding recorded investment. The table below details loans that have been modified as TDRs for the three months ended March 31, 2018. For the three months ended March 31, 2018 (In thousands) Number of loans Pre-modification outstanding recorded investment Post-modification outstanding recorded investment Additional provision for loan losses Other commercial and industrial loans 1 $ 300 $ 300 $ - The TDR evaluated for impairment for the three months ended March 31, 2018, has been classified as a TDR due to economic concessions granted, which included an extended maturity date that will result in a delay in payment from the original contractual maturity. The Company had no loans that have been modified as TDRs for three months ended March 31, 2017. The Company is required to disclose loans that have been modified as TDRs within the previous 12 months in which there was payment default after the restructuring. The Company defines payment default as any loans 90 days past due on contractual payments. The Company had no loans that had been modified as TDRs during the twelve months prior to March 31, 2018, which had subsequently defaulted during the three months ended March 31, 2018. The Company had no loans that had been modified as TDRs during the twelve months prior to March 31, 2017, which had subsequently defaulted during the three months ended March 31, 2017. When the Company modifies a loan within a portfolio segment that is individually evaluated for impairment, a potential impairment is analyzed either based on the present value of the expected future cash flows discounted at the interest rate of the original loan terms or the fair value of the collateral less costs to sell. If it is determined that the value of the loan is less than its recorded investment, then impairment is recognized as a component of the provision for loan losses, an associated increase to the allowance for loan losses or as a charge-off to the allowance for loan losses in the current period. Impaired Loans The following tables summarize impaired loan information by portfolio class at the indicated dates: March 31, 2018 December 31, 2017 Unpaid Unpaid Recorded Principal Related Recorded Principal Related (In thousands) Investment Balance Allowance Investment Balance Allowance With no related allowance recorded: 1-4 family first-lien residential mortgages $ 894 $ 903 $ - $ 900 $ 909 $ - Commercial real estate 3,228 3,278 - 3,314 3,360 - Commercial lines of credit 502 502 - 507 507 - Other commercial and industrial 755 756 - 523 524 - Home equity and junior liens - - - 80 80 - With an allowance recorded: 1-4 family first-lien residential mortgages 953 953 111 958 958 210 Commercial real estate 2,183 2,183 412 2,186 2,187 320 Commercial lines of credit 40 40 40 40 40 40 Other commercial and industrial 305 305 276 525 525 391 Home equity and junior liens 209 209 141 210 210 142 Total: 1-4 family first-lien residential mortgages 1,847 1,856 111 1,858 1,867 210 Commercial real estate 5,411 5,461 412 5,500 5,547 320 Commercial lines of credit 542 542 40 547 547 40 Other commercial and industrial 1,060 1,061 276 1,048 1,049 391 Home equity and junior liens 209 209 141 290 290 142 Totals $ 9,069 $ 9,129 $ 980 $ 9,243 $ 9,300 $ 1,103 The following table presents the average recorded investment in impaired loans for the periods indicated: For the three months ended March 31, (In thousands) 2018 2017 1-4 family first-lien residential mortgages $ 1,853 $ 1,612 Commercial real estate 5,456 4,808 Commercial lines of credit 545 407 Other commercial and industrial 1,055 1,012 Home equity and junior liens 250 351 Total $ 9,159 $ 8,190 The following table presents the cash basis interest income recognized on impaired loans for the periods indicated: For the three months ended March 31, (In thousands) 2018 2017 1-4 family first-lien residential mortgages $ 18 $ 11 Commercial real estate 48 45 Commercial lines of credit 11 6 Other commercial and industrial 6 7 Home equity and junior liens 3 1 Total $ 86 $ 70

Allowance for Loan Losses

Allowance for Loan Losses	3 Months Ended
	Mar. 31, 2018
Allowance For Loan Losses [Abstract]
Allowance for Loan Losses	Note 7: Allowance for Loan Losses Summarized in the tables below are changes in the allowance for loan losses for the indicated periods and information pertaining to the allocation of the allowance for loan losses, balances of the allowance for loan losses, loans receivable based on individual, and collective impairment evaluation by loan portfolio class. An allocation of a portion of the allowance to a given portfolio class does not limit the Company’s ability to absorb losses in another portfolio class. March 31, 2018 1-4 family first-lien Residential Other residential construction Commercial Commercial commercial (In thousands) mortgage mortgage real estate lines of credit and industrial Allowance for loan losses: Beginning Balance $ 865 $ - $ 3,589 $ 735 $ 1,214 Charge-offs (118 ) - - - (124 ) Recoveries 21 - - - - Provisions (credits) (17 ) - 306 (16 ) 219 Ending balance $ 751 $ 3,895 $ 719 $ 1,309 Ending balance: related to loans individually evaluated for impairment 111 - 412 40 276 Ending balance: related to loans collectively evaluated for impairment $ 640 $ - $ 3,483 $ 679 $ 1,033 Loans receivables: Ending balance $ 219,059 $ 5,559 $ 206,951 $ 52,482 $ 60,385 Ending balance: individually evaluated for impairment 1,847 - 5,411 542 1,060 Ending balance: collectively evaluated for impairment $ 217,212 $ 5,559 $ 201,540 $ 51,940 $ 59,325 Home Other Tax exempt and junior liens Consumer Unallocated Total Allowance for loan losses: Beginning Balance $ 1 $ 514 $ 208 $ - $ 7,126 Charge-offs - (17 ) (63 ) - (322 ) Recoveries - - 13 - 34 Provisions - 10 102 9 613 Ending balance $ 1 $ 507 $ 260 $ 9 $ 7,451 Ending balance: related to loans individually evaluated for impairment - 141 - - 980 Ending balance: related to loans collectively evaluated for impairment $ 1 $ 366 $ 260 $ 9 $ 6,471 Loans receivables: Ending balance $ 10,233 $ 26,116 $ 27,601 $ 608,386 Ending balance: individually evaluated for impairment - 209 - 9,069 Ending balance: collectively evaluated for impairment $ 10,233 $ 25,907 $ 27,601 $ 599,317 March 31, 2017 1-4 family first-lien Residential Other residential construction Commercial Commercial commercial (In thousands) mortgage mortgage real estate lines of credit and industrial Allowance for loan losses: Beginning Balance $ 759 $ - $ 2,935 $ 397 $ 1,658 Charge-offs (13 ) - (505 ) (53 ) (16 ) Recoveries 1 - - - 2 Provisions (credits) 196 - 102 21 (164 ) Ending balance $ 943 $ - $ 2,532 $ 365 $ 1,480 Ending balance: related to loans individually evaluated for impairment 196 - - - 252 Ending balance: related to loans collectively evaluated for impairment $ 747 $ - $ 2,532 $ 365 $ 1,228 Loans receivables: Ending balance $ 202,282 $ 7,565 $ 158,303 $ 20,221 $ 75,680 Ending balance: individually evaluated for impairment 1,611 - 4,543 414 1,001 Ending balance: collectively evaluated for impairment $ 200,671 $ 7,565 $ 153,760 $ 19,807 $ 74,679 Home equity Other Tax exempt and junior liens Consumer Unallocated Total Allowance for loan losses: Beginning Balance $ 1 $ 331 $ 166 $ - $ 6,247 Charge-offs - (69 ) (32 ) - (688 ) Recoveries - - 13 - 16 Provisions (credits) - 247 (14 ) 1 389 Ending balance $ 1 $ 509 $ 133 $ 1 $ 5,964 Ending balance: related to loans individually evaluated for impairment - 143 - - 591 Ending balance: related to loans collectively evaluated for impairment $ 1 $ 366 $ 133 $ 1 5,373 Loans receivables: Ending balance $ 11,959 $ 24,763 $ 20,708 $ 521,481 Ending balance: individually evaluated for impairment - 216 - 7,785 Ending balance: collectively evaluated for impairment $ 11,959 $ 24,547 $ 20,708 $ 513,696 The Company’s methodology for determining its allowance for loan losses includes an analysis of qualitative factors that are added to the historical loss rates in arriving at the total allowance for loan losses needed for this general pool of loans. The qualitative factors include: • Changes in national and local economic trends; • The rate of growth in the portfolio; • Trends of delinquencies and nonaccrual balances; • Changes in loan policy; and • Changes in lending management experience and related staffing. Each factor is assigned a value to reflect improving, stable or declining conditions based on management’s best judgment using relevant information available at the time of the evaluation. These qualitative factors, applied to each product class, make the evaluation inherently subjective, as it requires material estimates that may be susceptible to significant revision as more information becomes available. Adjustments to the factors are supported through documentation of changes in conditions in a narrative accompanying the allowance for loan losses analysis and calculation. The allocation of the allowance for loan losses summarized on the basis of the Company’s calculation methodology was as follows: March 31, 2018 1-4 family first-lien Residential Other residential construction Commercial Commercial commercial (In thousands) mortgage mortgage real estate lines of credit and industrial Specifically reserved $ 111 $ - $ 412 $ 40 $ 276 Historical loss rate 83 - 88 29 - Qualitative factors 557 - 3,395 650 1,033 Total $ 751 $ - $ 3,895 $ 719 $ 1,309 Home equity Other Tax exempt and junior liens consumer Unallocated Total Specifically reserved $ - $ 141 $ - $ - $ 980 Historical loss rate - 34 96 - 330 Qualitative factors 1 332 164 - 6,132 Other - - - 9 9 Total $ 1 $ 507 $ 260 $ 9 $ 7,451 March 31, 2017 1-4 family first-lien Residential Other residential construction Commercial Commercial commercial (In thousands) mortgage mortgage real estate lines of credit and industrial Specifically reserved $ 196 $ - $ - $ - $ 252 Historical loss rate 102 - 48 32 55 Qualitative factors 645 - 2,484 333 1,173 Total $ 943 $ - $ 2,532 $ 365 $ 1,480 Home equity Other Tax exempt and junior liens consumer Unallocated Total Specifically reserved $ - $ 143 $ - $ - $ 591 Historical loss rate - 35 21 - 293 Qualitative factors 1 331 112 - 5,079 Other - - - 1 1 Total $ 1 $ 509 $ 133 $ 1 $ 5,964

Foreclosed Real Estate

Foreclosed Real Estate	3 Months Ended
	Mar. 31, 2018
Real Estate Owned Disclosure Of Detailed Components [Abstract]
Foreclosed Real Estate	Note 8: Foreclosed Real Estate The Company is required to disclose the carrying amount of foreclosed residential real estate properties held as a result of obtaining physical possession of the property at each reporting period. (Dollars in thousands) Number of properties March 31, 2018 Number of properties December 31, 2017 Foreclosed residential real estate 3 $ 108 5 $ 468 At March 31, 2018, the Company reported $802,000 in residential real estate loans in the process of foreclosure.

Guarantees

Guarantees	3 Months Ended
	Mar. 31, 2018
Commitments And Contingencies Disclosure [Abstract]
Guarantees	Note 9: Guarantees The Company does not issue any guarantees that would require liability recognition or disclosure, other than its standby letters of credit. Generally, all letters of credit, when issued have expiration dates within one year. The credit risks involved in issuing letters of credit is essentially the same as those that are involved in extending loan facilities to customers. The Company generally holds collateral and/or personal guarantees supporting these commitments. The Company had $2.2 million of standby letters of credit as of March 31, 2018. Management believes that the proceeds obtained through a liquidation of collateral and the enforcement of guarantees would be sufficient to cover the potential amount of future payments required under the corresponding guarantees. The fair value of standby letters of credit was not significant to the Company’s consolidated financial statements.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 10: Fair Value Measurements Accounting guidance related to fair value measurements and disclosures specifies a hierarchy of valuation techniques based on whether the inputs to those valuation techniques are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Company’s market assumptions. These two types of inputs have created the following fair value hierarchy: Level 1 – Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. Level 2 – Quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets or liabilities in markets that are not active; and model-derived valuations in which all significant inputs and significant value drivers are observable in active markets. Level 3 – Model-derived valuations in which one or more significant inputs or significant value drivers are unobservable. An asset’s or liability’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. In determining fair value, the Company utilizes valuation techniques that maximize the use of observable inputs, minimize the use of unobservable inputs, to the extent possible, and considers counterparty credit risk in its assessment of fair value. The Company used the following methods and significant assumptions to estimate fair value: Investment securities: The fair values of available-for-sale and marketable equity securities are obtained from an independent third party and are based on quoted prices on nationally recognized securities exchanges where available (Level 1). If quoted prices are not available, fair values are measured by utilizing matrix pricing, which is a mathematical technique used widely in the industry to value debt securities without relying exclusively on quoted prices for specific securities but rather by relying on the securities’ relationship to other benchmark quoted securities (Level 2). Management made no adjustment to the fair value quotes that were received from the independent third party pricing service. Impaired loans: Impaired loans are those loans in which the Company has measured impairment based on the fair value of the loan’s collateral or the discounted value of expected future cash flows. Fair value is generally determined based upon market value evaluations by third parties of the properties and/or estimates by management of working capital collateral or discounted cash flows based upon expected proceeds. These appraisals may include up to three approaches to value: the sales comparison approach, the income approach (for income-producing property), and the cost approach. Management modifies the appraised values, if needed, to take into account recent developments in the market or other factors, such as, changes in absorption rates or market conditions from the time of valuation and anticipated sales values considering management’s plans for disposition. Such modifications to the appraised values could result in lower valuations of such collateral. Estimated costs to sell are based on current amounts of disposal costs for similar assets. These measurements are classified as Level 3 within the valuation hierarchy. Impaired loans are subject to nonrecurring fair value adjustment upon initial recognition or subsequent impairment. A portion of the allowance for loan losses is allocated to impaired loans if the value of such loans is deemed to be less than the unpaid balance. Foreclosed real estate: Fair values for foreclosed real estate are initially recorded based on market value evaluations by third parties, less costs to sell (“initial cost basis”). Any write-downs required when the related loan receivable is exchanged for the underlying real estate collateral at the time of transfer to foreclosed real estate are charged to the allowance for loan losses. Values are derived from appraisals, similar to impaired loans, of underlying collateral or discounted cash flow analysis. Subsequent to foreclosure, valuations are updated periodically and assets are marked to current fair value, not to exceed the initial cost basis. In the determination of fair value subsequent to foreclosure, management also considers other factors or recent developments, such as, changes in absorption rates and market conditions from the time of valuation and anticipated sales values considering management’s plans for disposition. Either change could result in adjustment to lower the property value estimates indicated in the appraisals. These measurements are classified as Level 3 within the fair value hierarchy. The following tables summarize assets measured at fair value on a recurring basis as of the indicated dates, segregated by the level of valuation inputs within the hierarchy utilized to measure fair value: March 31, 2018 Total Fair (In thousands) Level 1 Level 2 Level 3 Value Available-for-Sale Portfolio Debt investment securities: US Treasury, agencies and GSEs $ - $ 23,104 $ - $ 23,104 State and political subdivisions - 11,386 - 11,386 Corporate - 12,083 - 12,083 Asset backed securities - 6,066 - 6,066 Residential mortgage-backed - US agency - 33,748 - 33,748 Collateralized mortgage obligations - US agency - 54,895 - 54,895 Collateralized mortgage obligations - Private label - 17,322 - 17,322 Equity investment securities: Common stock - Financial services industry - 195 195 Total available-for-sale securities $ - $ 158,799 $ - $ 158,799 Marketable equity securities $ - $ 528 $ - $ 528 December 31, 2017 Total Fair (In thousands) Level 1 Level 2 Level 3 Value Available-for-Sale Portfolio Debt investment securities: US Treasury, agencies and GSEs $ - $ 41,336 $ - $ 41,336 State and political subdivisions - 13,681 - 13,681 Corporate - 8,600 - 8,600 Asset backed securities 6,644 6,644 Residential mortgage-backed - US agency - 35,742 - 35,742 Collateralized mortgage obligations - US agency - 53,348 - 53,348 Collateralized mortgage obligations - Private label - 11,052 - 11,052 Equity investment securities: Mutual funds: Ultra short mortgage fund - - - - Common stock - Financial services industry - 220 515 735 Total available-for-sale securities $ - $ 170,623 $ 515 $ 171,138 The following table summarizes the valuation techniques and significant unobservable inputs used for the Company's investments that are categorized within Level 3 of the fair value hierarchy at the indicated dates: (In thousands) At December 31, 2017 Investment Type Fair Value Valuation Techniques Unobservable Input Weight Marketable equity securities $ 515 Inputs to comparables Weight ascribed to comparable companies 100% Pathfinder Bank had the following assets measured at fair value on a nonrecurring basis as of March 31, 2018 and December 31, 2017: March 31, 2018 Total Fair (In thousands) Level 1 Level 2 Level 3 Value Impaired loans $ - $ - $ 525 $ 525 Foreclosed real estate $ - $ - $ 72 $ 72 December 31, 2017 Total Fair (In thousands) Level 1 Level 2 Level 3 Value Impaired loans $ - $ - $ 4,887 $ 4,887 Foreclosed real estate $ - $ - $ 434 $ 434 The following table presents additional quantitative information about assets measured at fair value on a nonrecurring basis and for which Level 3 inputs were used to determine fair value at the indicated dates. Quantitative Information about Level 3 Fair Value Measurements Valuation Unobservable Range Techniques Input (Weighted Avg.) At March 31, 2018 Impaired loans Appraisal of collateral Appraisal Adjustments 5% - 15% (6%) (Sales Approach) Costs to Sell 7% - 13% (10%) Discounted Cash Flow Foreclosed real estate Appraisal of collateral Appraisal Adjustments 15% - 15% (15%) (Sales Approach) Costs to Sell 6% - 8% (7%) Quantitative Information about Level 3 Fair Value Measurements Valuation Unobservable Range Techniques Input (Weighted Avg.) At December 31, 2017 Impaired loans Appraisal of collateral Appraisal Adjustments 5% - 30% (9%) (Sales Approach) Costs to Sell 7% - 13% (11%) Discounted Cash Flow Foreclosed real estate Appraisal of collateral Appraisal Adjustments 15% - 15% (15%) (Sales Approach) Costs to Sell 6% - 8% (7%) The Company owns a small percentage of the common stock of a single, otherwise unaffiliated, financial institution with a fair market value of $528,000. This financial institution had been recently formed, was relatively limited in the scope of its business activities, and was relatively small in asset size at the time the shares of common stock were initially acquired by the Company. The shares of this financial institution are not, and have never been, listed on any public stock exchange. Through December 31, 2017, the Company determined the fair market value of these shares using Level 3 methodologies. The relatively unique characteristics of the institution precluded the use of significant inputs and value drivers observable in active markets through that date. During the three months ended March 31, 2018, the Company’s management reevaluated the fair value methodology it had previously used with respect to this investment and determined that the institution’s increased size and current business activities had become reasonably comparable over time with applicable peers. Consequently, relevant significant inputs and value drivers observable in active markets were deemed to be present and available at March 31, 2018. Accordingly, the Company transferred this asset from Level 3 to Level 2 at March 31, 2018 for purposes of the accompanying fair value disclosure. Required disclosures include fair value information of financial instruments, whether or not recognized in the consolidated statement of condition, for which it is practicable to estimate that value. In cases where quoted market prices are not available, fair values are based on estimates using present value or other valuation techniques. Those techniques are significantly affected by the assumptions used, including the discount rate and estimates of future cash flows. In that regard, the derived fair value estimates cannot be substantiated by comparison to independent markets and, in many cases, could not be realized in immediate settlement of the instrument. The Company has various processes and controls in place to ensure that fair value is reasonably estimated. The Company performs due diligence procedures over third-party pricing service providers in order to support their use in the valuation process. While the Company believes its valuation methods are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date. Management uses its best judgment in estimating the fair value of the Company’s financial instruments; however, there are inherent weaknesses in any estimation technique. Therefore, for substantially all financial instruments, the fair value estimates herein are not necessarily indicative of the amounts the Company could have realized in a sales transaction on the dates indicated. The estimated fair value amounts have been measured as of their respective period-ends, and have not been re-evaluated or updated for purposes of these financial statements subsequent to those respective dates. As such, the estimated fair values of these financial instruments subsequent to the respective reporting dates may be different than the amounts reported at each period-end. FASB ASC Topic 820 for Fair Value Measurements and Disclosures, the financial assets and liabilities were valued at a price that represents the Company’s exit price or the price at which these instruments would be sold or transferred. The following information should not be interpreted as an estimate of the fair value of the entire Company since a fair value calculation is only provided for a limited portion of the Company’s assets and liabilities. Due to a wide range of valuation techniques and the degree of subjectivity used in making the estimates, comparisons between the Company’s disclosures and those of other companies may not be meaningful. The Company, in estimating its fair value disclosures for financial instruments, used the following methods and assumptions: Cash and cash equivalents – The carrying amounts of these assets approximate their fair value and are classified as Level 1. Investment securities – The fair values of available-for-sale, held-to-maturity and marketable equity securities are obtained from an independent third party and are based on quoted prices on nationally recognized exchange where available (Level 1). If quoted prices are not available, fair values are measured by utilizing matrix pricing, which is a mathematical technique used widely in the industry to value debt securities without relying exclusively on quoted prices for specific securities, but rather by relying on the securities’ relationship to other benchmark quoted securities (Level 2). Management made no adjustment to the fair value quotes that were received from the independent third party pricing service. Level 3 securities are assets whose Federal Home Loan Bank stock – The carrying amount of these assets approximates their fair value and are classified as Level 2. Net loans – For variable-rate loans that re-price frequently, fair value is based on carrying amounts. The fair value of other loans (for example, fixed-rate commercial real estate loans, mortgage loans, and commercial and industrial loans) is estimated using discounted cash flow analysis, based on interest rates currently being offered in the market for loans with similar terms to borrowers of similar credit quality. Loan value estimates include judgments based on expected prepayment rates. The measurement of the fair value of loans, including impaired loans, is classified within Level 3 of the fair value hierarchy. Accrued interest receivable and payable – The carrying amount of these assets approximates their fair value and are classified as Level 1. Deposits – The fair values disclosed for demand deposits (e.g., interest-bearing and noninterest-bearing checking, passbook savings and certain types of money management accounts) are, by definition, equal to the amount payable on demand at the reporting date (i.e., their carrying amounts) and are classified within Level 1 of the fair value hierarchy. Fair values for fixed-rate certificates of deposit are estimated using a discounted cash flow calculation that applies interest rates currently being offered in the market on certificates of deposits to a schedule of aggregated expected monthly maturities on time deposits. Measurements of the fair value of time deposits are classified within Level 2 of the fair value hierarchy. Borrowings – Fixed/variable term “bullet” structures are valued using a replacement cost of funds approach. These borrowings are discounted to the FHLBNY advance curve. Option structured borrowings’ fair values are determined by the FHLB for borrowings that include a call or conversion option. If market pricing is not available from this source, current market indications from the FHLBNY are obtained and the borrowings are discounted to the FHLBNY advance curve less an appropriate spread to adjust for the option. These measurements are classified as Level 2 within the fair value hierarchy. Subordinated loans – The Company secures quotes from its pricing service based on a discounted cash flow methodology or utilizes observations of recent highly-similar transactions which result in a Level 2 classification. The carrying amounts and fair values of the Company’s financial instruments as of the indicated dates are presented in the following table: March 31, 2018 December 31, 2017 Fair Value Carrying Estimated Carrying Estimated (In thousands) Hierarchy Amounts Fair Values Amounts Fair Values Financial assets: Cash and cash equivalents 1 $ 18,279 $ 18,279 $ 21,991 $ 21,991 Investment securities - available-for-sale 2 158,799 158,799 170,623 170,623 Investment securities - available-for-sale 3 - - 515 515 Investment securities - marketable equity 2 528 528 - - Investment securities - held-to-maturity 2 63,952 63,226 66,196 66,426 Federal Home Loan Bank stock 2 3,405 3,405 3,855 3,855 Net loans 3 600,598 590,542 573,705 570,439 Accrued interest receivable 1 3,000 3,000 3,047 3,047 Financial liabilities: Demand Deposits, Savings, NOW and MMDA 1 $ 510,141 $ 510,141 $ 510,176 $ 510,176 Time Deposits 2 233,664 232,123 213,427 212,453 Borrowings 2 63,888 63,408 73,888 73,575 Subordinated loans 2 15,068 14,818 15,059 14,953 Accrued interest payable 1 218 218 186 186

Interest Rate Derivatives

Interest Rate Derivatives	3 Months Ended
	Mar. 31, 2018
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Interest Rate Derivatives	Note 11: Interest Rate Derivatives Derivative instruments are entered into by the Company primarily as a risk management tool. Financial derivatives are recorded at fair value as other liabilities. The accounting for changes in the fair value of a derivative depends on whether it has been designated and qualifies as part of a hedging relationship. For a fair value hedge, changes in the fair value of the derivative instrument and changes in the fair value of the hedged asset or liability are recognized currently in earnings. For a cash flow hedge, changes in the fair value of the derivative instrument, to the extent that it is effective, are recorded in other comprehensive income and subsequently reclassified to earnings as the hedged transaction impacts net income. Any ineffective portion of a cash flow hedge is recognized currently in earnings. On two occasions during the first quarter of 2017, the Company sold, and subsequently repurchased, a U.S. Treasury security in the approximate amount of $40.0 million for each transaction. These transactions were intended to act as hedges against rising short-term interest rates. The Company was in controlling possession of, but did not own, the securities at the time of each sale. The securities had been received by the Company, under industry-standard repurchase agreements, from an unrelated third party as collateral for a series of 30-day loans of approximately $40.0 million on each occasion which were made at market rates of interest to that third party. The security sale on each occasion provided the funds necessary to advance the loan to the third party and placed the Company in what is generally described as a “short position” with respect to the sold U.S. Treasury security. These transactions acted as a hedge against rising short-term interest rates because the price of each sold security would be expected to decline in a rising short-term interest rate environment and could therefore be re-acquired at the conclusion of each 30-day loan period at a price lower than the price at which the security was originally sold. Short-term rates rose over the combined duration of these transactions and, consequently, the Company recognized aggregate gains on the sale and repurchase of the securities in the amounts of $94,000 for the three months ended March 31, 2017. The transactions’ gains were characterized as capital gains for tax purposes. These capital gains utilized existing, previously reserved-for, capital loss tax carryforwards that were established in 2013. The Company recognized tax benefits related to these transactions of $36,000 for the three months ended March 31, 2017. The tax benefits arose from the reversal of reserves established in 2013 against the portion of the Company’s deferred tax asset related to existing capital loss carryforward positions. The reserves were originally established due to the uncertainty of the Company’s ability to generate future capital gain income within the five-year statutory life of the capital loss carryforward position under the Internal Revenue Code. The recognized tax benefit from the reversal of those reserves reduced the Company’s effective tax rate from what would have been

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2018
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss)	Note 12: Accumulated Other Comprehensive Income (Loss) Changes in the components of accumulated other comprehensive income (loss) (“AOCI”), net of tax, for the periods indicated are summarized in the table below. For the three months ended March 31, 2018 (In thousands) Retirement Plans Unrealized Gains and Losses on Available- for-Sale Securities Unrealized Loss on Securities Transferred to Held-to-Maturity Total Beginning balance $ (2,220 ) $ (1,558 ) $ (430 ) (4,208 ) Other comprehensive income before reclassifications - (878 ) 16 (862 ) Amounts reclassified from AOCI 32 79 - 111 Cumulative effect of change in measurement of equity securities (1) - (53 ) - (53 ) Ending balance $ (2,188 ) $ (2,410 ) $ (414 ) $ (5,012 ) (1) Cumulative effect of unrealized gain on marketable equity securities based on the adoption of ASU 2016-01 - Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Liabilities. For the three months ended March 31, 2017 (In thousands) Retirement Plans Unrealized Gains and Losses on Available- for-Sale Securities Unrealized Loss on Securities Transferred to Held-to-Maturity Total Beginning balance $ (1,513 ) $ (1,845 ) $ (464 ) $ (3,822 ) Other comprehensive income before reclassifications - 613 22 635 Amounts reclassified from AOCI 23 (43 ) - (20 ) Ending balance $ (1,490 ) $ (1,275 ) $ (442 ) $ (3,207 ) The following table presents the amounts reclassified out of each component of AOCI for the indicated period: Amount Reclassified from AOCI (1) (Unaudited) (In thousands) For the three months ended Details about AOCI (1) March 31, 2018 March 31, 2017 Affected Line Item in the Statement of Income Retirement plan items Retirement plan net losses recognized in plan expenses (2) $ (43 ) $ (37 ) Salaries and employee benefits Tax effect 11 14 Provision for income taxes $ (32 ) $ (23 ) Net Income Available-for-sale securities Realized gain on sale of securities $ (107 ) $ 71 Net gains on sales and redemptions of investment securities Tax effect 28 (28 ) Provision for income taxes $ (79 ) $ 43 Net Income (1) Amounts in parentheses indicates debits in net income. (2) These items are included in net periodic pension cost. See Note 5 for additional information.

Earnings per Common Share (Tabl

Earnings per Common Share (Tables)	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Calculations of Basic and Diluted Earnings per Share	The following table sets forth the calculation of basic and diluted earnings per share. Three months ended March 31, (In thousands, except per share data) 2018 2017 Basic Earnings Per Common Share Net income available to common shareholders $ 1,004 $ 800 Weighted average common shares outstanding 4,119 4,052 Basic earnings per common share $ 0.24 $ 0.20 Diluted Earnings Per Common Share Net income available to common shareholders $ 1,004 $ 800 Weighted average common shares outstanding 4,119 4,052 Effect of assumed exercise of stock options 117 102 Diluted weighted average common shares outstanding 4,236 4,154 Diluted earnings per common share $ 0.24 $ 0.19

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2018
Investments Debt And Equity Securities [Abstract]
Amortized Cost and Estimated Fair Value of Investment Securities	The amortized cost and estimated fair value of investment securities are summarized as follows: March 31, 2018 Gross Gross Estimated Amortized Unrealized Unrealized Fair (In thousands) Cost Gains Losses Value Available-for-Sale Portfolio Debt investment securities: US Treasury, agencies and GSEs $ 23,296 $ - $ (192 ) $ 23,104 State and political subdivisions 11,770 - (384 ) 11,386 Corporate 12,086 155 (158 ) 12,083 Asset backed securities 6,136 5 (75 ) 6,066 Residential mortgage-backed - US agency 34,534 20 (806 ) 33,748 Collateralized mortgage obligations - US agency 56,557 - (1,662 ) 54,895 Collateralized mortgage obligations - Private label 17,503 18 (199 ) 17,322 Total 161,882 198 (3,476 ) 158,604 Equity investment securities: Common stock - financial services industry 195 - - 195 Total 195 - - 195 Total available-for-sale $ 162,077 $ 198 $ (3,476 ) $ 158,799 Held-to-Maturity Portfolio Debt investment securities: US Treasury, agencies and GSEs $ 4,953 $ 1 $ (38 ) $ 4,916 State and political subdivisions 33,584 421 (646 ) 33,359 Corporate 8,268 113 (248 ) 8,133 Residential mortgage-backed - US agency 6,619 1 (75 ) 6,545 Collateralized mortgage obligations - US agency 7,417 21 (234 ) 7,204 Collateralized mortgage obligations - Private label 3,111 - (42 ) 3,069 Total held-to-maturity $ 63,952 $ 557 $ (1,283 ) $ 63,226 December 31, 2017 Gross Gross Estimated Amortized Unrealized Unrealized Fair (In thousands) Cost Gains Losses Value Available-for-Sale Portfolio Debt investment securities: US Treasury, agencies and GSEs $ 41,489 $ 1 $ (154 ) $ 41,336 State and political subdivisions 13,960 12 (291 ) 13,681 Corporate 8,584 108 (92 ) 8,600 Asset backed securities 6,662 12 (30 ) 6,644 Residential mortgage-backed - US agency 36,214 23 (495 ) 35,742 Collateralized mortgage obligations - US agency 54,481 - (1,133 ) 53,348 Collateralized mortgage obligations - Private label 11,193 62 (203 ) 11,052 Total 172,583 218 (2,398 ) 170,403 Equity investment securities: Common stock - financial services industry 663 72 - 735 Total 663 72 - 735 Total available-for-sale $ 173,246 $ 290 $ (2,398 ) $ 171,138 Held-to-Maturity Portfolio Debt investment securities: US Treasury, agencies and GSEs $ 4,948 $ 14 $ (14 ) $ 4,948 State and political subdivisions 35,130 641 (311 ) 35,460 Corporate 8,311 151 (159 ) 8,303 Residential mortgage-backed - US agency 6,853 53 (10 ) 6,896 Collateralized mortgage obligations - US agency 7,574 83 (215 ) 7,442 Collateralized mortgage obligations - Private label 3,380 7 (10 ) 3,377 Total held-to-maturity $ 66,196 $ 949 $ (719 ) $ 66,426
Amortized Cost and Estimated Fair Value of Debt Investments by Contractual Maturity	The amortized cost and estimated fair value of debt investments at March 31, 2018 by contractual maturity are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without penalties. Available-for-Sale Held-to-Maturity Amortized Estimated Amortized Estimated (In thousands) Cost Fair Value Cost Fair Value Due in one year or less $ 11,265 $ 11,225 $ 1,230 $ 1,225 Due after one year through five years 22,661 22,444 10,320 10,344 Due after five years through ten years 11,917 11,926 17,007 17,296 Due after ten years 7,445 7,044 18,248 17,543 Sub-total 53,288 52,639 46,805 46,408 Residential mortgage-backed - US agency 34,534 33,748 6,619 6,545 Collateralized mortgage obligations - US agency 56,557 54,895 7,417 7,204 Collateralized mortgage obligations - Private label 17,503 17,322 3,111 3,069 Totals $ 161,882 $ 158,604 $ 63,952 $ 63,226
Investment Securities' Gross Unrealized Losses and Fair Value by Investment Category and Length of Time that Individual Securities Have Continuous Unrealized Loss Position	The Company’s investment securities’ gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, are as follows: March 31, 2018 Less than Twelve Months Twelve Months or More Total Number of Number of Number of Individual Unrealized Fair Individual Unrealized Fair Individual Unrealized Fair (Dollars in thousands) Securities Losses Value Securities Losses Value Securities Losses Value Available-for-Sale Portfolio US Treasury, agencies and GSE's 3 $ (161 ) $ 14,117 3 $ (31 ) $ 8,968 6 $ (192 ) $ 23,085 State and political subdivisions 15 (76 ) 3,684 10 (308 ) 4,588 25 (384 ) 8,272 Corporate 6 (49 ) 3,783 1 (109 ) 1,685 7 (158 ) 5,468 Asset backed securities 3 (61 ) 3,841 1 (14 ) 740 4 (75 ) 4,581 Residential mortgage-backed - US agency 15 (309 ) 20,337 9 (497 ) 10,189 24 (806 ) 30,526 Collateralized mortgage obligations - US agency 17 (348 ) 26,155 21 (1,314 ) 25,494 38 (1,662 ) 51,649 Collateralized mortgage obligations - Private label 7 (199 ) 14,424 - - - 7 (199 ) 14,424 Totals 66 $ (1,203 ) $ 86,341 45 $ (2,273 ) $ 51,664 111 $ (3,476 ) $ 138,005 Held-to-Maturity Portfolio US Treasury, agencies and GSE's 3 $ (16 ) $ 2,964 1 $ (22 ) $ 978 4 $ (38 ) $ 3,942 State and political subdivisions 10 (201 ) 7,268 11 (445 ) 8,391 21 (646 ) 15,659 Corporate 3 (51 ) 2,096 2 (197 ) 2,053 5 (248 ) 4,149 Residential mortgage-backed - US agency 9 (75 ) 5,476 - - - 9 (75 ) 5,476 Collateralized mortgage obligations - US agency 2 (234 ) 4,237 - - - 2 (234 ) 4,237 Collateralized mortgage obligations - Private label 1 (24 ) 2,051 1 (18 ) 1,018 2 (42 ) 3,069 Totals 28 $ (601 ) $ 24,092 15 $ (682 ) $ 12,440 43 $ (1,283 ) $ 36,532 December 31, 2017 Less than Twelve Months Twelve Months or More Total Number of Number of Number of Individual Unrealized Fair Individual Unrealized Fair Individual Unrealized Fair (Dollars in thousands) Securities Losses Value Securities Losses Value Securities Losses Value Available-for-Sale Portfolio US Treasury, agencies and GSE's 5 $ (105 ) $ 27,359 4 $ (49 ) $ 13,957 9 $ (154 ) $ 41,316 State and political subdivisions 18 (24 ) 2,480 12 (267 ) 5,041 30 (291 ) 7,521 Corporate 2 (19 ) 1,791 1 (73 ) 1,727 3 (92 ) 3,518 Asset backed securities 2 (17 ) 3,123 1 (13 ) 742 3 (30 ) 3,865 Residential mortgage-backed - US agency 15 (159 ) 21,551 9 (336 ) 10,463 24 (495 ) 32,014 Collateralized mortgage obligations - US agency 14 (195 ) 23,790 21 (938 ) 25,395 35 (1,133 ) 49,185 Collateralized mortgage obligations - Private label 4 (203 ) 7,439 - - - 4 (203 ) 7,439 Totals 60 $ (722 ) $ 87,533 48 $ (1,676 ) $ 57,325 108 $ (2,398 ) $ 144,858 Held-to-Maturity Portfolio US Treasury, agencies and GSE's 2 $ (2 ) $ 1,990 1 $ (12 ) $ 988 3 $ (14 ) $ 2,978 State and political subdivisions 8 (55 ) 5,668 11 (256 ) 8,644 19 (311 ) 14,312 Corporate 3 (10 ) 1,412 1 (149 ) 2,087 4 (159 ) 3,499 Residential mortgage-backed - US agency 2 (10 ) 1,909 - - - 2 (10 ) 1,909 Collateralized mortgage obligations - US agency 2 (215 ) 4,418 - - - 2 (215 ) 4,418 Collateralized mortgage obligations - Private label 1 (10 ) 1,119 - - - 1 (10 ) 1,119 Totals 18 (302 ) 16,516 13 (417 ) 11,719 31 (719 ) $ 28,235
Gross Realized Gains (Losses) on Sale of Securities	Gross realized gains (losses) on sales of securities for the indicated periods are detailed below: For the three months ended March 31, (In thousands) 2018 2017 Realized gains on investments $ 27 $ 78 Realized gains on hedging activity - 94 Realized losses on investments (134 ) (101 ) $ (107 ) $ 71 Gains on equity securities 13 - $ 13 $ -

Pension and Postretirement Be23

Pension and Postretirement Benefits (Tables)	3 Months Ended
	Mar. 31, 2018
Compensation And Retirement Disclosure [Abstract]
Composition of Net Periodic Pension and Postretirement Plan Costs	The composition of net periodic pension plan and postretirement plan costs for the indicated periods is as follows: Pension Benefits Postretirement Benefits For the three months ended March 31, (In thousands) 2018 2017 2018 2017 Service cost $ - $ - $ - $ - Interest cost 118 118 5 2 Expected return on plan assets (259 ) (236 ) - - Amortization of prior service cost/(credits) - - (1 ) - Amortization of net losses/(gains) 41 39 3 (2 ) Net periodic benefit plan (benefit) cost $ (100 ) $ (79 ) $ 7 $ -

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
Major Classification of Loans	Major classifications of loans at the indicated dates are as follows: March 31, December 31, (In thousands) 2018 2017 Residential mortgage loans: 1-4 family first-lien residential mortgages $ 219,059 $ 216,793 Construction 5,559 5,558 Total residential mortgage loans 224,618 222,351 Commercial loans: Real estate 206,951 192,525 Lines of credit 52,482 51,131 Other commercial and industrial 60,385 50,251 Tax exempt loans 10,233 10,405 Total commercial loans 330,051 304,312 Consumer loans: Home equity and junior liens 26,116 25,935 Other consumer 27,601 28,646 Total consumer loans 53,717 54,581 Total loans 608,386 581,244 Net deferred loan fees (337 ) (413 ) Less allowance for loan losses (7,451 ) (7,126 ) Loans receivable, net $ 600,598 $ 573,705
Summary of Classes of Loan Portfolio	The following tables present the classes of the loan portfolio, not including net deferred loan costs, summarized by the aggregate pass rating and the classified ratings of special mention, substandard and doubtful within the Company's internal risk rating system as of the dates indicated: As of March 31, 2018 Special (In thousands) Pass Mention Substandard Doubtful Total Residential mortgage loans: 1-4 family first-lien residential mortgages $ 214,151 $ 927 $ 1,410 $ 2,571 $ 219,059 Construction 5,559 - - - 5,559 Total residential mortgage loans 219,710 927 1,410 2,571 224,618 Commercial loans: Real estate 201,595 1,357 1,943 2,056 206,951 Lines of credit 51,686 218 518 60 52,482 Other commercial and industrial 58,585 816 688 296 60,385 Tax exempt loans 10,233 - - - 10,233 Total commercial loans 322,099 2,391 3,149 2,412 330,051 Consumer loans: Home equity and junior liens 25,703 85 173 155 26,116 Other consumer 27,453 139 9 - 27,601 Total consumer loans 53,156 224 182 155 53,717 Total loans $ 594,965 $ 3,542 $ 4,741 $ 5,138 $ 608,386 As of December 31, 2017 Special (In thousands) Pass Mention Substandard Doubtful Total Residential mortgage loans: 1-4 family first-lien residential mortgages $ 211,825 $ 891 $ 1,869 $ 2,208 $ 216,793 Construction 5,558 - - - 5,558 Total residential mortgage loans 217,383 891 1,869 2,208 222,351 Commercial loans: Real estate 187,073 1,372 2,024 2,056 192,525 Lines of credit 50,353 195 523 60 51,131 Other commercial and industrial 48,892 407 532 420 50,251 Tax exempt loans 10,405 - - - 10,405 Total commercial loans 296,723 1,974 3,079 2,536 304,312 Consumer loans: Home equity and junior liens 25,396 61 304 174 25,935 Other consumer 28,584 55 7 - 28,646 Total consumer loans 53,980 116 311 174 54,581 Total loans $ 568,086 $ 2,981 $ 5,259 $ 4,918 $ 581,244
Age Analysis of Past Due Loans Segregated by Portfolio Segment and Class of Loans	An age analysis of past due loans, not including net deferred loan costs, segregated by portfolio segment and class of loans, as of March 31, 2018 and December 31, 2017, are detailed in the following tables: As of March 31, 2018 30-59 Days 60-89 Days 90 Days Past Due Past Due and Total Total Loans (In thousands) And Accruing And Accruing Over Past Due Current Receivable Residential mortgage loans: 1-4 family first-lien residential mortgages $ 823 $ 235 $ 2,116 $ 3,174 $ 215,885 $ 219,059 Construction - - - - 5,559 5,559 Total residential mortgage loans 823 235 2,116 3,174 221,444 224,618 Commercial loans: Real estate 4,410 492 2,928 7,830 199,121 206,951 Lines of credit 850 88 171 1,109 51,373 52,482 Other commercial and industrial 363 115 978 1,456 58,929 60,385 Tax exempt loans - - - - 10,233 10,233 Total commercial loans 5,623 695 4,077 10,395 319,656 330,051 Consumer loans: Home equity and junior liens 18 - 205 223 25,893 26,116 Other consumer 136 73 56 265 27,336 27,601 Total consumer loans 154 73 261 488 53,229 53,717 Total loans $ 6,600 $ 1,003 $ 6,454 $ 14,057 $ 594,329 $ 608,386 As of December 31, 2017 30-59 Days 60-89 Days 90 Days Past Due Past Due and Total Total Loans (In thousands) And Accruing And Accruing Over Past Due Current Receivable Residential mortgage loans: 1-4 family first-lien residential mortgages $ 1,196 $ 925 $ 2,088 $ 4,209 $ 212,584 $ 216,793 Construction - - - - 5,558 5,558 Total residential mortgage loans 1,196 925 2,088 4,209 218,142 222,351 Commercial loans: Real estate 720 2,056 1,545 4,321 188,204 192,525 Lines of credit 1,482 31 132 1,645 49,486 51,131 Other commercial and industrial 575 60 766 1,401 48,850 50,251 Tax exempt loans - - - - 10,405 10,405 Total commercial loans 2,777 2,147 2,443 7,367 296,945 304,312 Consumer loans: Home equity and junior liens 94 74 300 468 25,467 25,935 Other consumer 192 50 63 305 28,341 28,646 Total consumer loans 286 124 363 773 53,808 54,581 Total loans $ 4,259 $ 3,196 $ 4,894 $ 12,349 $ 568,895 $ 581,244
Nonaccrual Loans Segregated by Class of Loan	Nonaccrual loans, segregated by class of loan, were as follows: March 31, December 31, (In thousands) 2018 2017 Residential mortgage loans: 1-4 family first-lien residential mortgages $ 2,116 $ 2,088 2,116 2,088 Commercial loans: Real estate 2,928 1,545 Lines of credit 171 132 Other commercial and industrial 978 766 4,077 2,443 Consumer loans: Home equity and junior liens 205 300 Other consumer 56 63 261 363 Total nonaccrual loans $ 6,454 $ 4,894
Troubled Debt Restructurings on Financing Receivables	The table below details loans that have been modified as TDRs for the three months ended March 31, 2018. For the three months ended March 31, 2018 (In thousands) Number of loans Pre-modification outstanding recorded investment Post-modification outstanding recorded investment Additional provision for loan losses Other commercial and industrial loans 1 $ 300 $ 300 $ -
Summary of Impaired Loans Information by Portfolio Class	The following tables summarize impaired loan information by portfolio class at the indicated dates: March 31, 2018 December 31, 2017 Unpaid Unpaid Recorded Principal Related Recorded Principal Related (In thousands) Investment Balance Allowance Investment Balance Allowance With no related allowance recorded: 1-4 family first-lien residential mortgages $ 894 $ 903 $ - $ 900 $ 909 $ - Commercial real estate 3,228 3,278 - 3,314 3,360 - Commercial lines of credit 502 502 - 507 507 - Other commercial and industrial 755 756 - 523 524 - Home equity and junior liens - - - 80 80 - With an allowance recorded: 1-4 family first-lien residential mortgages 953 953 111 958 958 210 Commercial real estate 2,183 2,183 412 2,186 2,187 320 Commercial lines of credit 40 40 40 40 40 40 Other commercial and industrial 305 305 276 525 525 391 Home equity and junior liens 209 209 141 210 210 142 Total: 1-4 family first-lien residential mortgages 1,847 1,856 111 1,858 1,867 210 Commercial real estate 5,411 5,461 412 5,500 5,547 320 Commercial lines of credit 542 542 40 547 547 40 Other commercial and industrial 1,060 1,061 276 1,048 1,049 391 Home equity and junior liens 209 209 141 290 290 142 Totals $ 9,069 $ 9,129 $ 980 $ 9,243 $ 9,300 $ 1,103
Average Recorded Investment In Impaired Loans	The following table presents the average recorded investment in impaired loans for the periods indicated: For the three months ended March 31, (In thousands) 2018 2017 1-4 family first-lien residential mortgages $ 1,853 $ 1,612 Commercial real estate 5,456 4,808 Commercial lines of credit 545 407 Other commercial and industrial 1,055 1,012 Home equity and junior liens 250 351 Total $ 9,159 $ 8,190
Cash Basis Interest Income Recognized On Impaired Loans	The following table presents the cash basis interest income recognized on impaired loans for the periods indicated: For the three months ended March 31, (In thousands) 2018 2017 1-4 family first-lien residential mortgages $ 18 $ 11 Commercial real estate 48 45 Commercial lines of credit 11 6 Other commercial and industrial 6 7 Home equity and junior liens 3 1 Total $ 86 $ 70

Allowance for Loan Losses (Tabl

Allowance for Loan Losses (Tables)	3 Months Ended
	Mar. 31, 2018
Allowance For Loan Losses [Abstract]
Changes in the Allowance for Loan Losses	An allocation of a portion of the allowance to a given portfolio class does not limit the Company’s ability to absorb losses in another portfolio class. March 31, 2018 1-4 family first-lien Residential Other residential construction Commercial Commercial commercial (In thousands) mortgage mortgage real estate lines of credit and industrial Allowance for loan losses: Beginning Balance $ 865 $ - $ 3,589 $ 735 $ 1,214 Charge-offs (118 ) - - - (124 ) Recoveries 21 - - - - Provisions (credits) (17 ) - 306 (16 ) 219 Ending balance $ 751 $ 3,895 $ 719 $ 1,309 Ending balance: related to loans individually evaluated for impairment 111 - 412 40 276 Ending balance: related to loans collectively evaluated for impairment $ 640 $ - $ 3,483 $ 679 $ 1,033 Loans receivables: Ending balance $ 219,059 $ 5,559 $ 206,951 $ 52,482 $ 60,385 Ending balance: individually evaluated for impairment 1,847 - 5,411 542 1,060 Ending balance: collectively evaluated for impairment $ 217,212 $ 5,559 $ 201,540 $ 51,940 $ 59,325 Home Other Tax exempt and junior liens Consumer Unallocated Total Allowance for loan losses: Beginning Balance $ 1 $ 514 $ 208 $ - $ 7,126 Charge-offs - (17 ) (63 ) - (322 ) Recoveries - - 13 - 34 Provisions - 10 102 9 613 Ending balance $ 1 $ 507 $ 260 $ 9 $ 7,451 Ending balance: related to loans individually evaluated for impairment - 141 - - 980 Ending balance: related to loans collectively evaluated for impairment $ 1 $ 366 $ 260 $ 9 $ 6,471 Loans receivables: Ending balance $ 10,233 $ 26,116 $ 27,601 $ 608,386 Ending balance: individually evaluated for impairment - 209 - 9,069 Ending balance: collectively evaluated for impairment $ 10,233 $ 25,907 $ 27,601 $ 599,317 March 31, 2017 1-4 family first-lien Residential Other residential construction Commercial Commercial commercial (In thousands) mortgage mortgage real estate lines of credit and industrial Allowance for loan losses: Beginning Balance $ 759 $ - $ 2,935 $ 397 $ 1,658 Charge-offs (13 ) - (505 ) (53 ) (16 ) Recoveries 1 - - - 2 Provisions (credits) 196 - 102 21 (164 ) Ending balance $ 943 $ - $ 2,532 $ 365 $ 1,480 Ending balance: related to loans individually evaluated for impairment 196 - - - 252 Ending balance: related to loans collectively evaluated for impairment $ 747 $ - $ 2,532 $ 365 $ 1,228 Loans receivables: Ending balance $ 202,282 $ 7,565 $ 158,303 $ 20,221 $ 75,680 Ending balance: individually evaluated for impairment 1,611 - 4,543 414 1,001 Ending balance: collectively evaluated for impairment $ 200,671 $ 7,565 $ 153,760 $ 19,807 $ 74,679 Home equity Other Tax exempt and junior liens Consumer Unallocated Total Allowance for loan losses: Beginning Balance $ 1 $ 331 $ 166 $ - $ 6,247 Charge-offs - (69 ) (32 ) - (688 ) Recoveries - - 13 - 16 Provisions (credits) - 247 (14 ) 1 389 Ending balance $ 1 $ 509 $ 133 $ 1 $ 5,964 Ending balance: related to loans individually evaluated for impairment - 143 - - 591 Ending balance: related to loans collectively evaluated for impairment $ 1 $ 366 $ 133 $ 1 5,373 Loans receivables: Ending balance $ 11,959 $ 24,763 $ 20,708 $ 521,481 Ending balance: individually evaluated for impairment - 216 - 7,785 Ending balance: collectively evaluated for impairment $ 11,959 $ 24,547 $ 20,708 $ 513,696
Schedule of Allowance for Loan Losses on Basis of Calculation Methodology	The allocation of the allowance for loan losses summarized on the basis of the Company’s calculation methodology was as follows: March 31, 2018 1-4 family first-lien Residential Other residential construction Commercial Commercial commercial (In thousands) mortgage mortgage real estate lines of credit and industrial Specifically reserved $ 111 $ - $ 412 $ 40 $ 276 Historical loss rate 83 - 88 29 - Qualitative factors 557 - 3,395 650 1,033 Total $ 751 $ - $ 3,895 $ 719 $ 1,309 Home equity Other Tax exempt and junior liens consumer Unallocated Total Specifically reserved $ - $ 141 $ - $ - $ 980 Historical loss rate - 34 96 - 330 Qualitative factors 1 332 164 - 6,132 Other - - - 9 9 Total $ 1 $ 507 $ 260 $ 9 $ 7,451 March 31, 2017 1-4 family first-lien Residential Other residential construction Commercial Commercial commercial (In thousands) mortgage mortgage real estate lines of credit and industrial Specifically reserved $ 196 $ - $ - $ - $ 252 Historical loss rate 102 - 48 32 55 Qualitative factors 645 - 2,484 333 1,173 Total $ 943 $ - $ 2,532 $ 365 $ 1,480 Home equity Other Tax exempt and junior liens consumer Unallocated Total Specifically reserved $ - $ 143 $ - $ - $ 591 Historical loss rate - 35 21 - 293 Qualitative factors 1 331 112 - 5,079 Other - - - 1 1 Total $ 1 $ 509 $ 133 $ 1 $ 5,964

Foreclosed Real Estate (Tables)

Foreclosed Real Estate (Tables)	3 Months Ended
	Mar. 31, 2018
Real Estate Owned Disclosure Of Detailed Components [Abstract]
Carrying Amount Of Foreclosed Residential Real Estate Properties Held	The Company is required to disclose the carrying amount of foreclosed residential real estate properties held as a result of obtaining physical possession of the property at each reporting period. (Dollars in thousands) Number of properties March 31, 2018 Number of properties December 31, 2017 Foreclosed residential real estate 3 $ 108 5 $ 468

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value of Assets on Recurring Basis Segregated by Level of Valuation Inputs	The following tables summarize assets measured at fair value on a recurring basis as of the indicated dates, segregated by the level of valuation inputs within the hierarchy utilized to measure fair value: March 31, 2018 Total Fair (In thousands) Level 1 Level 2 Level 3 Value Available-for-Sale Portfolio Debt investment securities: US Treasury, agencies and GSEs $ - $ 23,104 $ - $ 23,104 State and political subdivisions - 11,386 - 11,386 Corporate - 12,083 - 12,083 Asset backed securities - 6,066 - 6,066 Residential mortgage-backed - US agency - 33,748 - 33,748 Collateralized mortgage obligations - US agency - 54,895 - 54,895 Collateralized mortgage obligations - Private label - 17,322 - 17,322 Equity investment securities: Common stock - Financial services industry - 195 195 Total available-for-sale securities $ - $ 158,799 $ - $ 158,799 Marketable equity securities $ - $ 528 $ - $ 528 December 31, 2017 Total Fair (In thousands) Level 1 Level 2 Level 3 Value Available-for-Sale Portfolio Debt investment securities: US Treasury, agencies and GSEs $ - $ 41,336 $ - $ 41,336 State and political subdivisions - 13,681 - 13,681 Corporate - 8,600 - 8,600 Asset backed securities 6,644 6,644 Residential mortgage-backed - US agency - 35,742 - 35,742 Collateralized mortgage obligations - US agency - 53,348 - 53,348 Collateralized mortgage obligations - Private label - 11,052 - 11,052 Equity investment securities: Mutual funds: Ultra short mortgage fund - - - - Common stock - Financial services industry - 220 515 735 Total available-for-sale securities $ - $ 170,623 $ 515 $ 171,138
Summary of Valuation Techniques and Significant Unobservable Inputs Used for Investments are Categorized Within Level 3 Fair Value Hierarchy	The following table summarizes the valuation techniques and significant unobservable inputs used for the Company's investments that are categorized within Level 3 of the fair value hierarchy at the indicated dates: (In thousands) At December 31, 2017 Investment Type Fair Value Valuation Techniques Unobservable Input Weight Marketable equity securities $ 515 Inputs to comparables Weight ascribed to comparable companies 100%
Summary of Fair Value Assets Measured on Nonrecurring Basis	Pathfinder Bank had the following assets measured at fair value on a nonrecurring basis as of March 31, 2018 and December 31, 2017: March 31, 2018 Total Fair (In thousands) Level 1 Level 2 Level 3 Value Impaired loans $ - $ - $ 525 $ 525 Foreclosed real estate $ - $ - $ 72 $ 72 December 31, 2017 Total Fair (In thousands) Level 1 Level 2 Level 3 Value Impaired loans $ - $ - $ 4,887 $ 4,887 Foreclosed real estate $ - $ - $ 434 $ 434
Fair Value Inputs, Quantitative Information	The following table presents additional quantitative information about assets measured at fair value on a nonrecurring basis and for which Level 3 inputs were used to determine fair value at the indicated dates. Quantitative Information about Level 3 Fair Value Measurements Valuation Unobservable Range Techniques Input (Weighted Avg.) At March 31, 2018 Impaired loans Appraisal of collateral Appraisal Adjustments 5% - 15% (6%) (Sales Approach) Costs to Sell 7% - 13% (10%) Discounted Cash Flow Foreclosed real estate Appraisal of collateral Appraisal Adjustments 15% - 15% (15%) (Sales Approach) Costs to Sell 6% - 8% (7%) Quantitative Information about Level 3 Fair Value Measurements Valuation Unobservable Range Techniques Input (Weighted Avg.) At December 31, 2017 Impaired loans Appraisal of collateral Appraisal Adjustments 5% - 30% (9%) (Sales Approach) Costs to Sell 7% - 13% (11%) Discounted Cash Flow Foreclosed real estate Appraisal of collateral Appraisal Adjustments 15% - 15% (15%) (Sales Approach) Costs to Sell 6% - 8% (7%)
Carrying Amounts and Fair Value of Financial Instruments	The carrying amounts and fair values of the Company’s financial instruments as of the indicated dates are presented in the following table: March 31, 2018 December 31, 2017 Fair Value Carrying Estimated Carrying Estimated (In thousands) Hierarchy Amounts Fair Values Amounts Fair Values Financial assets: Cash and cash equivalents 1 $ 18,279 $ 18,279 $ 21,991 $ 21,991 Investment securities - available-for-sale 2 158,799 158,799 170,623 170,623 Investment securities - available-for-sale 3 - - 515 515 Investment securities - marketable equity 2 528 528 - - Investment securities - held-to-maturity 2 63,952 63,226 66,196 66,426 Federal Home Loan Bank stock 2 3,405 3,405 3,855 3,855 Net loans 3 600,598 590,542 573,705 570,439 Accrued interest receivable 1 3,000 3,000 3,047 3,047 Financial liabilities: Demand Deposits, Savings, NOW and MMDA 1 $ 510,141 $ 510,141 $ 510,176 $ 510,176 Time Deposits 2 233,664 232,123 213,427 212,453 Borrowings 2 63,888 63,408 73,888 73,575 Subordinated loans 2 15,068 14,818 15,059 14,953 Accrued interest payable 1 218 218 186 186

Accumulated Other Comprehensi28

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2018
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Changes in the Components of Accumulated Other Comprehensive Income (Loss), Net of Tax	Changes in the components of accumulated other comprehensive income (loss) (“AOCI”), net of tax, for the periods indicated are summarized in the table below. For the three months ended March 31, 2018 (In thousands) Retirement Plans Unrealized Gains and Losses on Available- for-Sale Securities Unrealized Loss on Securities Transferred to Held-to-Maturity Total Beginning balance $ (2,220 ) $ (1,558 ) $ (430 ) (4,208 ) Other comprehensive income before reclassifications - (878 ) 16 (862 ) Amounts reclassified from AOCI 32 79 - 111 Cumulative effect of change in measurement of equity securities (1) - (53 ) - (53 ) Ending balance $ (2,188 ) $ (2,410 ) $ (414 ) $ (5,012 ) (1) Cumulative effect of unrealized gain on marketable equity securities based on the adoption of ASU 2016-01 - Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Liabilities. For the three months ended March 31, 2017 (In thousands) Retirement Plans Unrealized Gains and Losses on Available- for-Sale Securities Unrealized Loss on Securities Transferred to Held-to-Maturity Total Beginning balance $ (1,513 ) $ (1,845 ) $ (464 ) $ (3,822 ) Other comprehensive income before reclassifications - 613 22 635 Amounts reclassified from AOCI 23 (43 ) - (20 ) Ending balance $ (1,490 ) $ (1,275 ) $ (442 ) $ (3,207 )
Schedule of Amounts Reclassified Out of Each Component of AOCI	The following table presents the amounts reclassified out of each component of AOCI for the indicated period: Amount Reclassified from AOCI (1) (Unaudited) (In thousands) For the three months ended Details about AOCI (1) March 31, 2018 March 31, 2017 Affected Line Item in the Statement of Income Retirement plan items Retirement plan net losses recognized in plan expenses (2) $ (43 ) $ (37 ) Salaries and employee benefits Tax effect 11 14 Provision for income taxes $ (32 ) $ (23 ) Net Income Available-for-sale securities Realized gain on sale of securities $ (107 ) $ 71 Net gains on sales and redemptions of investment securities Tax effect 28 (28 ) Provision for income taxes $ (79 ) $ 43 Net Income (1) Amounts in parentheses indicates debits in net income. (2) These items are included in net periodic pension cost. See Note 5 for additional information.

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Details)	Mar. 31, 2018
Nature of Operations [Line Items]
Consolidation of membership interest in Fitzgibbons	100.00%
FitzGibbons Agency LLC [Member] | Pathfinder Risk Management Company Inc [Member]
Nature of Operations [Line Items]
Membership interest own in Fitzgibbons through subsidiary	51.00%
Noncontrolling interest by subsidiary	49.00%

New Accounting Pronouncements -

New Accounting Pronouncements - Additional Information (Details) - USD ($)	Jan. 01, 2018	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Fair value on marketable equity securities		$ 528,000		$ 515,000
Restricted Cash		$ 5,109,000		6,342,000
Lessee, Operating Lease, Term of Contract		12 months
ASU 2014-09 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Expense recognized on credit card rewards in other costs of operations		$ 15,000	$ 26,000
ASU 2016-01 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Fair value on marketable equity securities		528,000
Recognition of unrealized gain from investment in equity securities		13,000
Additional retained earnings, transferred from AOCI	$ 53,000
ASU 2016-18 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Restricted Cash		5,100,000	$ 16,700,000	$ 6,300,000
ASU 2016-02 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Minimum lease payments under noncancelable operating lease agreements		$ 1,100,000

Earnings per Common Share - Add

Earnings per Common Share - Additional Information (Details) - shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive stock options (in shares)	0	92,261

Earnings per Common Share - Cal

Earnings per Common Share - Calculations of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Basic Earnings Per Common Share [Abstract]
Net income available to common shareholders	$ 1,004	$ 800
Weighted average common shares outstanding (in shares)	4,119	4,052
Basic earnings per common share	$ 0.24	$ 0.20
Diluted Earnings Per Common Share [Abstract]
Net income available to common shareholders	$ 1,004	$ 800
Weighted average common shares outstanding (in shares)	4,119	4,052
Effect of assumed exercise of stock options (in shares)	117	102
Diluted weighted average common shares outstanding (in shares)	4,236	4,154
Diluted earnings per common share	$ 0.24	$ 0.19

Investment Securities - Amortiz

Investment Securities - Amortized Cost and Estimated Fair Value of Investment Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities and Held-to-Maturity Securities [Line Items]
Totals, amortized cost	$ 161,882
Total investment securities, amortized cost basis	162,077	$ 173,246
Gross Unrealized Gains	198	290
Gross Unrealized Losses	(3,476)	(2,398)
Estimated Fair Value	158,799	171,138
Held-to-maturity securities, debt maturities, Amortized Cost	63,952	66,196
Held to maturity, gross unrealized gains	557	949
Held to maturity, gross unrealized losses	(1,283)	(719)
Held-to-maturity Securities, Debt Maturities, Fair Value	63,226	66,426
US Treasury, Agencies and GSEs [Member]
Schedule of Available-for-sale Securities and Held-to-Maturity Securities [Line Items]
Totals, amortized cost	23,296	41,489
Gross Unrealized Gains, Debt investment securities	0	1
Gross Unrealized Losses, Debt investment securities	(192)	(154)
Available-for-sale Securities, Debt investment securities	23,104	41,336
Held-to-maturity securities, debt maturities, Amortized Cost	4,953	4,948
Held to maturity, gross unrealized gains	1	14
Held to maturity, gross unrealized losses	(38)	(14)
Held-to-maturity Securities, Debt Maturities, Fair Value	4,916	4,948
State and Political Subdivisions [Member]
Schedule of Available-for-sale Securities and Held-to-Maturity Securities [Line Items]
Totals, amortized cost	11,770	13,960
Gross Unrealized Gains, Debt investment securities	0	12
Gross Unrealized Losses, Debt investment securities	(384)	(291)
Available-for-sale Securities, Debt investment securities	11,386	13,681
Held-to-maturity securities, debt maturities, Amortized Cost	33,584	35,130
Held to maturity, gross unrealized gains	421	641
Held to maturity, gross unrealized losses	(646)	(311)
Held-to-maturity Securities, Debt Maturities, Fair Value	33,359	35,460
Corporate [Member]
Schedule of Available-for-sale Securities and Held-to-Maturity Securities [Line Items]
Totals, amortized cost	12,086	8,584
Gross Unrealized Gains, Debt investment securities	155	108
Gross Unrealized Losses, Debt investment securities	(158)	(92)
Available-for-sale Securities, Debt investment securities	12,083	8,600
Held-to-maturity securities, debt maturities, Amortized Cost	8,268	8,311
Held to maturity, gross unrealized gains	113	151
Held to maturity, gross unrealized losses	(248)	(159)
Held-to-maturity Securities, Debt Maturities, Fair Value	8,133	8,303
Asset Backed Securities [Member]
Schedule of Available-for-sale Securities and Held-to-Maturity Securities [Line Items]
Totals, amortized cost	6,136	6,662
Gross Unrealized Gains, Debt investment securities	5	12
Gross Unrealized Losses, Debt investment securities	(75)	(30)
Available-for-sale Securities, Debt investment securities	6,066	6,644
Residential Mortgage-Backed - US Agency [Member]
Schedule of Available-for-sale Securities and Held-to-Maturity Securities [Line Items]
Totals, amortized cost	34,534	36,214
Gross Unrealized Gains, Debt investment securities	20	23
Gross Unrealized Losses, Debt investment securities	(806)	(495)
Available-for-sale Securities, Debt investment securities	33,748	35,742
Held-to-maturity securities, debt maturities, Amortized Cost	6,619	6,853
Held to maturity, gross unrealized gains	1	53
Held to maturity, gross unrealized losses	(75)	(10)
Held-to-maturity Securities, Debt Maturities, Fair Value	6,545	6,896
Collateralized Mortgage Obligations - US Agency [Member]
Schedule of Available-for-sale Securities and Held-to-Maturity Securities [Line Items]
Totals, amortized cost	56,557	54,481
Gross Unrealized Gains, Debt investment securities	0	0
Gross Unrealized Losses, Debt investment securities	(1,662)	(1,133)
Available-for-sale Securities, Debt investment securities	54,895	53,348
Held-to-maturity securities, debt maturities, Amortized Cost	7,417	7,574
Held to maturity, gross unrealized gains	21	83
Held to maturity, gross unrealized losses	(234)	(215)
Held-to-maturity Securities, Debt Maturities, Fair Value	7,204	7,442
Collateralized Mortgage Obligations - Private Label [Member]
Schedule of Available-for-sale Securities and Held-to-Maturity Securities [Line Items]
Totals, amortized cost	17,503	11,193
Gross Unrealized Gains, Debt investment securities	18	62
Gross Unrealized Losses, Debt investment securities	(199)	(203)
Available-for-sale Securities, Debt investment securities	17,322	11,052
Held-to-maturity securities, debt maturities, Amortized Cost	3,111	3,380
Held to maturity, gross unrealized gains	0	7
Held to maturity, gross unrealized losses	(42)	(10)
Held-to-maturity Securities, Debt Maturities, Fair Value	3,069	3,377
Debt Securities [Member]
Schedule of Available-for-sale Securities and Held-to-Maturity Securities [Line Items]
Totals, amortized cost	161,882	172,583
Gross Unrealized Gains, Debt investment securities	198	218
Gross Unrealized Losses, Debt investment securities	(3,476)	(2,398)
Available-for-sale Securities, Debt investment securities	158,604	170,403
Mutual funds Common Stock Financial Services Industry [Member]
Schedule of Available-for-sale Securities and Held-to-Maturity Securities [Line Items]
Amortized cost, equity securities	195	663
Gross Unrealized Gains, Equity investment securities	0	72
Gross Unrealized Losses, Equity investment securities	0	0
Available-for-sale Securities, Equity investment securities	195	735
Equity and Other Investments [Member]
Schedule of Available-for-sale Securities and Held-to-Maturity Securities [Line Items]
Amortized cost, equity securities	195	663
Gross Unrealized Gains, Equity investment securities	0	72
Gross Unrealized Losses, Equity investment securities	0	0
Available-for-sale Securities, Equity investment securities	$ 195	$ 735

Investment Securities - Amort34

Investment Securities - Amortized Cost and Estimated Fair Value of Debt Investments by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Available-for-sale securities, debt maturities, amortized cost [Abstract]
Due in one year or less	$ 11,265
Due after one year through five years	22,661
Due after five years through ten years	11,917
Due after ten years	7,445
Sub-total	53,288
Amortized cost	161,882
Available-for-sale securities, debt maturities, Estimated Fair Value [Abstract]
Due in one year or less	11,225
Due after one year through five years	22,444
Due after five years through ten years	11,926
Due after ten years	7,044
Sub-total	52,639
Available-for-sale securities, debt maturities, fair value, totals	158,604
Held-to-maturity Securities, debt maturities, amortized cost [Abstract]
Due in one year or less	1,230
Due after one year through five years	10,320
Due after five years through ten years	17,007
Due after ten years	18,248
Sub-total	46,805
Held-to-maturity securities, debt maturities, Amortized Cost	63,952	$ 66,196
Held-to-maturity Securities, debt maturities, Estimated Fair Value [Abstract]
Due in one year or less	1,225
Due after one year through five years	10,344
Due after five years through ten years	17,296
Due after ten years	17,543
Sub-total	46,408
Held-to-maturity securities at fair value	63,226	66,426
Residential Mortgage-Backed - US Agency [Member]
Available-for-sale securities, debt maturities, amortized cost [Abstract]
Amortized cost	34,534	36,214
Available-for-sale securities, debt maturities, Estimated Fair Value [Abstract]
Available-for-sale securities, debt maturities, fair value, totals	33,748
Held-to-maturity Securities, debt maturities, amortized cost [Abstract]
Held-to-maturity securities, debt maturities, Amortized Cost	6,619	6,853
Held-to-maturity Securities, debt maturities, Estimated Fair Value [Abstract]
Held-to-maturity securities at fair value	6,545	6,896
Collateralized Mortgage Obligations - US Agency [Member]
Available-for-sale securities, debt maturities, amortized cost [Abstract]
Amortized cost	56,557	54,481
Available-for-sale securities, debt maturities, Estimated Fair Value [Abstract]
Available-for-sale securities, debt maturities, fair value, totals	54,895
Held-to-maturity Securities, debt maturities, amortized cost [Abstract]
Held-to-maturity securities, debt maturities, Amortized Cost	7,417	7,574
Held-to-maturity Securities, debt maturities, Estimated Fair Value [Abstract]
Held-to-maturity securities at fair value	7,204	7,442
Collateralized Mortgage Obligations - Private Label [Member]
Available-for-sale securities, debt maturities, amortized cost [Abstract]
Amortized cost	17,503	11,193
Available-for-sale securities, debt maturities, Estimated Fair Value [Abstract]
Available-for-sale securities, debt maturities, fair value, totals	17,322
Held-to-maturity Securities, debt maturities, amortized cost [Abstract]
Held-to-maturity securities, debt maturities, Amortized Cost	3,111	3,380
Held-to-maturity Securities, debt maturities, Estimated Fair Value [Abstract]
Held-to-maturity securities at fair value	$ 3,069	$ 3,377

Investment Securities - Investm

Investment Securities - Investment Securities' Gross Unrealized Losses and Fair Value by Investment Category and Length of Time that Individual Securities Have Continuous Unrealized Loss Position (Details)	Mar. 31, 2018USD ($)Security	Dec. 31, 2017USD ($)Security
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Number of securities in unrealized loss positions, less than twelve months | Security	28	18
Number of securities in unrealized loss positions, twelve months or more | Security	15	13
Number of securities in unrealized loss positions | Security	43	31
Less than twelve months Fair Value	$ 24,092,000	$ 16,516,000
Twelve months or more Fair Value	12,440,000	11,719,000
Total Fair Value	36,532,000	28,235,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than twelve months Unrealized Losses	(601,000)	(302,000)
Twelve months or more Unrealized Losses	(682,000)	(417,000)
Total Unrealized Losses	$ (1,283,000)	$ (719,000)
US Treasury, Agencies and GSEs [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Number of securities in unrealized loss positions, less than twelve months | Security	3	5
Number of securities in unrealized loss positions, twelve months or more | Security	3	4
Number of securities in unrealized loss positions | Security	6	9
Less than twelve months Fair Value	$ 14,117,000	$ 27,359,000
Twelve months or more Fair Value	8,968,000	13,957,000
Total Fair Value	23,085,000	41,316,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than twelve months Unrealized Losses	(161,000)	(105,000)
Twelve months or more Unrealized Losses	(31,000)	(49,000)
Total Unrealized Losses	$ (192,000)	$ (154,000)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Number of securities in unrealized loss positions, less than twelve months | Security	3	2
Number of securities in unrealized loss positions, twelve months or more | Security	1	1
Number of securities in unrealized loss positions | Security	4	3
Less than twelve months Fair Value	$ 2,964,000	$ 1,990,000
Twelve months or more Fair Value	978,000	988,000
Total Fair Value	3,942,000	2,978,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than twelve months Unrealized Losses	(16,000)	(2,000)
Twelve months or more Unrealized Losses	(22,000)	(12,000)
Total Unrealized Losses	$ (38,000)	$ (14,000)
State and Political Subdivisions [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Number of securities in unrealized loss positions, less than twelve months | Security	15	18
Number of securities in unrealized loss positions, twelve months or more | Security	10	12
Number of securities in unrealized loss positions | Security	25	30
Less than twelve months Fair Value	$ 3,684,000	$ 2,480,000
Twelve months or more Fair Value	4,588,000	5,041,000
Total Fair Value	8,272,000	7,521,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than twelve months Unrealized Losses	(76,000)	(24,000)
Twelve months or more Unrealized Losses	(308,000)	(267,000)
Total Unrealized Losses	$ (384,000)	$ (291,000)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Number of securities in unrealized loss positions, less than twelve months | Security	10	8
Number of securities in unrealized loss positions, twelve months or more | Security	11	11
Number of securities in unrealized loss positions | Security	21	19
Less than twelve months Fair Value	$ 7,268,000	$ 5,668,000
Twelve months or more Fair Value	8,391,000	8,644,000
Total Fair Value	15,659,000	14,312,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than twelve months Unrealized Losses	(201,000)	(55,000)
Twelve months or more Unrealized Losses	(445,000)	(256,000)
Total Unrealized Losses	$ (646,000)	$ (311,000)
Corporate [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Number of securities in unrealized loss positions, less than twelve months | Security	6	2
Number of securities in unrealized loss positions, twelve months or more | Security	1	1
Number of securities in unrealized loss positions | Security	7	3
Less than twelve months Fair Value	$ 3,783,000	$ 1,791,000
Twelve months or more Fair Value	1,685,000	1,727,000
Total Fair Value	5,468,000	3,518,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than twelve months Unrealized Losses	(49,000)	(19,000)
Twelve months or more Unrealized Losses	(109,000)	(73,000)
Total Unrealized Losses	$ (158,000)	$ (92,000)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Number of securities in unrealized loss positions, less than twelve months | Security	3	3
Number of securities in unrealized loss positions, twelve months or more | Security	2	1
Number of securities in unrealized loss positions | Security	5	4
Less than twelve months Fair Value	$ 2,096,000	$ 1,412,000
Twelve months or more Fair Value	2,053,000	2,087,000
Total Fair Value	4,149,000	3,499,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than twelve months Unrealized Losses	(51,000)	(10,000)
Twelve months or more Unrealized Losses	(197,000)	(149,000)
Total Unrealized Losses	$ (248,000)	$ (159,000)
Asset Backed Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Number of securities in unrealized loss positions, less than twelve months | Security	3	2
Number of securities in unrealized loss positions, twelve months or more | Security	1	1
Number of securities in unrealized loss positions | Security	4	3
Less than twelve months Fair Value	$ 3,841,000	$ 3,123,000
Twelve months or more Fair Value	740,000	742,000
Total Fair Value	4,581,000	3,865,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than twelve months Unrealized Losses	(61,000)	(17,000)
Twelve months or more Unrealized Losses	(14,000)	(13,000)
Total Unrealized Losses	$ (75,000)	$ (30,000)
Residential Mortgage-Backed - US Agency [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Number of securities in unrealized loss positions, less than twelve months | Security	15	15
Number of securities in unrealized loss positions, twelve months or more | Security	9	9
Number of securities in unrealized loss positions | Security	24	24
Less than twelve months Fair Value	$ 20,337,000	$ 21,551,000
Twelve months or more Fair Value	10,189,000	10,463,000
Total Fair Value	30,526,000	32,014,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than twelve months Unrealized Losses	(309,000)	(159,000)
Twelve months or more Unrealized Losses	(497,000)	(336,000)
Total Unrealized Losses	$ (806,000)	$ (495,000)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Number of securities in unrealized loss positions, less than twelve months | Security	9	2
Number of securities in unrealized loss positions, twelve months or more | Security	0	0
Number of securities in unrealized loss positions | Security	9	2
Less than twelve months Fair Value	$ 5,476,000	$ 1,909,000
Twelve months or more Fair Value	0	0
Total Fair Value	5,476,000	1,909,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than twelve months Unrealized Losses	(75,000)	(10,000)
Twelve months or more Unrealized Losses	0	0
Total Unrealized Losses	$ (75,000)	$ (10,000)
Collateralized Mortgage Obligations - US Agency [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Number of securities in unrealized loss positions, less than twelve months | Security	17	14
Number of securities in unrealized loss positions, twelve months or more | Security	21	21
Number of securities in unrealized loss positions | Security	38	35
Less than twelve months Fair Value	$ 26,155,000	$ 23,790,000
Twelve months or more Fair Value	25,494,000	25,395,000
Total Fair Value	51,649,000	49,185,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than twelve months Unrealized Losses	(348,000)	(195,000)
Twelve months or more Unrealized Losses	(1,314,000)	(938,000)
Total Unrealized Losses	$ (1,662,000)	$ (1,133,000)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Number of securities in unrealized loss positions, less than twelve months | Security	2	2
Number of securities in unrealized loss positions, twelve months or more | Security	0	0
Number of securities in unrealized loss positions | Security	2	2
Less than twelve months Fair Value	$ 4,237,000	$ 4,418,000
Twelve months or more Fair Value	0	0
Total Fair Value	4,237,000	4,418,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than twelve months Unrealized Losses	(234,000)	(215,000)
Twelve months or more Unrealized Losses	0	0
Total Unrealized Losses	$ (234,000)	$ (215,000)
Collateralized Mortgage Obligations - Private Label [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Number of securities in unrealized loss positions, less than twelve months | Security	7	4
Number of securities in unrealized loss positions, twelve months or more | Security	0	0
Number of securities in unrealized loss positions | Security	7	4
Less than twelve months Fair Value	$ 14,424,000	$ 7,439,000
Twelve months or more Fair Value	0	0
Total Fair Value	14,424,000	7,439,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than twelve months Unrealized Losses	(199,000)	(203,000)
Twelve months or more Unrealized Losses	0	0
Total Unrealized Losses	$ (199,000)	$ (203,000)
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Number of securities in unrealized loss positions, less than twelve months | Security	1	1
Number of securities in unrealized loss positions, twelve months or more | Security	1	0
Number of securities in unrealized loss positions | Security	2	1
Less than twelve months Fair Value	$ 2,051,000	$ 1,119,000
Twelve months or more Fair Value	1,018,000	0
Total Fair Value	3,069,000	1,119,000
Held-to-maturity Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than twelve months Unrealized Losses	(24,000)	(10,000)
Twelve months or more Unrealized Losses	(18,000)	0
Total Unrealized Losses	$ (42,000)	$ (10,000)
Debt Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Number of securities in unrealized loss positions, less than twelve months | Security	66	60
Number of securities in unrealized loss positions, twelve months or more | Security	45	48
Number of securities in unrealized loss positions | Security	111	108
Less than twelve months Fair Value	$ 86,341,000	$ 87,533,000
Twelve months or more Fair Value	51,664,000	57,325,000
Total Fair Value	138,005,000	144,858,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than twelve months Unrealized Losses	(1,203,000)	(722,000)
Twelve months or more Unrealized Losses	(2,273,000)	(1,676,000)
Total Unrealized Losses	$ (3,476,000)	$ (2,398,000)

Investment Securities - Additio

Investment Securities - Additional Information (Details)	3 Months Ended
	Mar. 31, 2018USD ($)Security	Dec. 31, 2017USD ($)Security
Held-to-maturity Securities [Abstract]
Number of securities in unrealized loss positions, twelve months or more | Security	15	13
Held to maturity sale securities aggregate market value	$ 12,440,000	$ 11,719,000
Held-to-maturity securities unrealized aggregate loss	682,000	417,000
Gain (Loss) on Sale of Investments [Abstract]
Securities pledged to collateralize deposit	98,200,000	113,000,000
Securities pledged to collateralize borrowing	$ 18,800,000	$ 19,900,000
Municipal Securities [Member]
Schedule of Available-for-sale Securities and Held-to-Maturity Securities [Line Items]
Months of unrealized loss positions	12 months
State and Political Subdivisions [Member]
Available-for-sale Securities, Amortized Cost Basis [Abstract]
Number of securities in unrealized loss positions, twelve months or more | Security	10	12
Available for sale securities continuous unrealized loss position twelve months or more amortized historical cost basis	$ 4,900,000
Available for sale securities aggregate market value	4,588,000	$ 5,041,000
Available for sale securities unrealized aggregate loss	$ 308,000	$ 267,000
Available for sale securities unrealized aggregate loss percentage	6.73%
Held-to-maturity Securities [Abstract]
Number of securities in unrealized loss positions, twelve months or more | Security	11	11
Held to maturity securities continuous unrealized loss position greater than twelve months amortized historical cost basis	$ 8,800,000
Held to maturity sale securities aggregate market value	8,391,000	$ 8,644,000
Held-to-maturity securities unrealized aggregate loss	$ 445,000	$ 256,000
Held-to-maturity securities unrealized aggregate loss percentage	5.30%
Corporate [Member]
Available-for-sale Securities, Amortized Cost Basis [Abstract]
Number of securities in unrealized loss positions, twelve months or more | Security	1	1
Available for sale securities continuous unrealized loss position twelve months or more amortized historical cost basis	$ 1,800,000
Available for sale securities aggregate market value	1,685,000	$ 1,727,000
Available for sale securities unrealized aggregate loss	$ 109,000	$ 73,000
Available for sale securities unrealized aggregate loss percentage	6.45%
Held-to-maturity Securities [Abstract]
Number of securities in unrealized loss positions, twelve months or more | Security	2	1
Held to maturity securities continuous unrealized loss position greater than twelve months amortized historical cost basis	$ 2,300,000
Held to maturity sale securities aggregate market value	2,053,000	$ 2,087,000
Held-to-maturity securities unrealized aggregate loss	$ 197,000	$ 149,000
Held-to-maturity securities unrealized aggregate loss percentage	9.61%
Fixed Rate, Private-label Asset-backed Security [Member]
Available-for-sale Securities, Amortized Cost Basis [Abstract]
Number of securities in unrealized loss positions, twelve months or more | Security	1
Available for sale securities continuous unrealized loss position twelve months or more amortized historical cost basis	$ 754,000
Available for sale securities aggregate market value	740,000
Available for sale securities unrealized aggregate loss	$ 14,000
Available for sale securities unrealized aggregate loss percentage	1.84%
Held-to-maturity Securities [Abstract]
Number of securities in unrealized loss positions, twelve months or more | Security	1
Held to maturity securities continuous unrealized loss position greater than twelve months amortized historical cost basis	$ 1,000,000
Held to maturity sale securities aggregate market value	1,000,000
Held-to-maturity securities unrealized aggregate loss	$ 18,000
Held-to-maturity securities unrealized aggregate loss percentage	1.82%
Fixed Rate, Private-label Asset-backed Security not Rated [Member]
Available-for-sale Securities, Amortized Cost Basis [Abstract]
Number of securities in unrealized loss positions, twelve months or more | Security	1
Available for sale securities continuous unrealized loss position twelve months or more amortized historical cost basis	$ 1,900,000
Available for sale securities aggregate market value	1,800,000
Available for sale securities unrealized aggregate loss	$ 56,000
Available for sale securities unrealized aggregate loss percentage	3.11%
Fixed Rate, Private-label Asset-backed Security Two [Member]
Available-for-sale Securities, Amortized Cost Basis [Abstract]
Number of securities in unrealized loss positions, twelve months or more | Security	1
Available for sale securities continuous unrealized loss position twelve months or more amortized historical cost basis	$ 1,200,000
Available for sale securities aggregate market value	1,200,000
Available for sale securities unrealized aggregate loss	$ 42,000
Available for sale securities unrealized aggregate loss percentage	3.61%

Investment Securities - Gross R

Investment Securities - Gross Realized Gains (Losses) on Sale of Securities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Gain Loss On Sale Of Investments [Abstract]
Realized gains on investments	$ 27	$ 78
Realized gains on hedging activity	0	94
Realized losses on investments	(134)	(101)
Total	(107)	71
Gains on equity securities	13	0
Gain (losses) on sale of securities, net	$ 13	$ 0

Pension and Postretirement Be38

Pension and Postretirement Benefits - Additional Information (Details)	3 Months Ended
	Mar. 31, 2018
Compensation And Retirement Disclosure [Abstract]
Minimum years of service to participate in the health and life insurance benefits as of January 1, 1995	14 years

Pension and Postretirement Be39

Pension and Postretirement Benefits - Composition of Net Periodic Pension Plan and Postretirement Plan Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 118	$ 118
Expected return on plan assets	(259)	(236)
Amortization of net losses/(gains)	41	39
Net periodic benefit plan (benefit) cost	(100)	(79)
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	5	2
Amortization of prior service cost/(credits)	(1)
Amortization of net losses/(gains)	3	$ (2)
Net periodic benefit plan (benefit) cost	$ 7

Loans - Major Classification of

Loans - Major Classification of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Notes, Loans and Financing Receivable, Net [Abstract]
Total loans	$ 608,386	$ 581,244	$ 521,481
Net deferred loan fees	(337)	(413)
Less allowance for loan losses	(7,451)	(7,126)
Loans receivable, net	600,598	573,705
Residential Mortgage Loans [Member]
Notes, Loans and Financing Receivable, Net [Abstract]
Total loans	224,618	222,351
Residential Mortgage Loans [Member] | 1-4 Family First Lien Residential Mortgages [Member]
Notes, Loans and Financing Receivable, Net [Abstract]
Total loans	219,059	216,793	202,282
Residential Mortgage Loans [Member] | Construction [Member]
Notes, Loans and Financing Receivable, Net [Abstract]
Total loans	5,559	5,558
Commercial Loans [Member]
Notes, Loans and Financing Receivable, Net [Abstract]
Total loans	330,051	304,312
Commercial Loans [Member] | Real Estate [Member]
Notes, Loans and Financing Receivable, Net [Abstract]
Total loans	206,951	192,525	158,303
Commercial Loans [Member] | Lines of Credit [Member]
Notes, Loans and Financing Receivable, Net [Abstract]
Total loans	52,482	51,131	20,221
Commercial Loans [Member] | Other Commercial and Industrial [Member]
Notes, Loans and Financing Receivable, Net [Abstract]
Total loans	60,385	50,251	75,680
Commercial Loans [Member] | Tax Exempt Loans [Member]
Notes, Loans and Financing Receivable, Net [Abstract]
Total loans	10,233	10,405	11,959
Consumer Loans [Member]
Notes, Loans and Financing Receivable, Net [Abstract]
Total loans	53,717	54,581
Consumer Loans [Member] | Home Equity and Junior Liens [Member]
Notes, Loans and Financing Receivable, Net [Abstract]
Total loans	26,116	25,935	24,763
Consumer Loans [Member] | Other Consumer [Member]
Notes, Loans and Financing Receivable, Net [Abstract]
Total loans	$ 27,601	$ 28,646	$ 20,708

Loans - Additional Information

Loans - Additional Information (Details)	3 Months Ended
	Mar. 31, 2018USD ($)LoanSegment	Mar. 31, 2017Loan	Dec. 31, 2017USD ($)	Apr. 30, 2017USD ($)	Jan. 31, 2017USD ($)
Accounts Notes And Loans Receivable [Line Items]
Loans acquired | $				$ 10,200,000	$ 15,600,000
Participating interest of acquired loan percentage	90.00%
Number of loans secured by liens on automobiles	1,231
Number of loans outstanding	1,030
Loans acquired carrying amount | $	$ 17,800,000
Number of acquired loan charged-off as uncollectible	7
Acquired loans charged-off as uncollectible | $	$ 58,300
Number of portfolio segment | Segment	3
Troubled Debt Restructuring During Prior Twelve Months [Member]
Accounts Notes And Loans Receivable [Line Items]
Number of loans		0
Number of loans subsequently defaulted	0	0
Residential Mortgage Loans [Member]
Accounts Notes And Loans Receivable [Line Items]
Residential mortgage loans pledged to FHLBNY as blanket collateral | $	$ 154,600,000		$ 148,100,000
Minimum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity period of acquired loans	2 years
Maximum [Member]
Accounts Notes And Loans Receivable [Line Items]
Maturity period of acquired loans	6 years

Loans - Summary of Classes of L

Loans - Summary of Classes of Loan Portfolio (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 608,386	$ 581,244	$ 521,481
Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	594,965	568,086
Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	3,542	2,981
Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	4,741	5,259
Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	5,138	4,918
Residential Mortgage Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	224,618	222,351
Residential Mortgage Loans [Member] | 1-4 Family First Lien Residential Mortgages [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	219,059	216,793	202,282
Residential Mortgage Loans [Member] | Construction [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	5,559	5,558
Residential Mortgage Loans [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	219,710	217,383
Residential Mortgage Loans [Member] | Pass [Member] | 1-4 Family First Lien Residential Mortgages [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	214,151	211,825
Residential Mortgage Loans [Member] | Pass [Member] | Construction [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	5,559	5,558
Residential Mortgage Loans [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	927	891
Residential Mortgage Loans [Member] | Special Mention [Member] | 1-4 Family First Lien Residential Mortgages [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	927	891
Residential Mortgage Loans [Member] | Special Mention [Member] | Construction [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	0	0
Residential Mortgage Loans [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	1,410	1,869
Residential Mortgage Loans [Member] | Substandard [Member] | 1-4 Family First Lien Residential Mortgages [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	1,410	1,869
Residential Mortgage Loans [Member] | Substandard [Member] | Construction [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	0	0
Residential Mortgage Loans [Member] | Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	2,571	2,208
Residential Mortgage Loans [Member] | Doubtful [Member] | 1-4 Family First Lien Residential Mortgages [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	2,571	2,208
Residential Mortgage Loans [Member] | Doubtful [Member] | Construction [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	0	0
Commercial Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	330,051	304,312
Commercial Loans [Member] | Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	206,951	192,525	158,303
Commercial Loans [Member] | Lines of Credit [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	52,482	51,131	20,221
Commercial Loans [Member] | Other Commercial and Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	60,385	50,251	75,680
Commercial Loans [Member] | Tax Exempt Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	10,233	10,405	11,959
Commercial Loans [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	322,099	296,723
Commercial Loans [Member] | Pass [Member] | Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	201,595	187,073
Commercial Loans [Member] | Pass [Member] | Lines of Credit [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	51,686	50,353
Commercial Loans [Member] | Pass [Member] | Other Commercial and Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	58,585	48,892
Commercial Loans [Member] | Pass [Member] | Tax Exempt Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	10,233	10,405
Commercial Loans [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	2,391	1,974
Commercial Loans [Member] | Special Mention [Member] | Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	1,357	1,372
Commercial Loans [Member] | Special Mention [Member] | Lines of Credit [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	218	195
Commercial Loans [Member] | Special Mention [Member] | Other Commercial and Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	816	407
Commercial Loans [Member] | Special Mention [Member] | Tax Exempt Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	0	0
Commercial Loans [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	3,149	3,079
Commercial Loans [Member] | Substandard [Member] | Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	1,943	2,024
Commercial Loans [Member] | Substandard [Member] | Lines of Credit [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	518	523
Commercial Loans [Member] | Substandard [Member] | Other Commercial and Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	688	532
Commercial Loans [Member] | Substandard [Member] | Tax Exempt Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	0	0
Commercial Loans [Member] | Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	2,412	2,536
Commercial Loans [Member] | Doubtful [Member] | Real Estate [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	2,056	2,056
Commercial Loans [Member] | Doubtful [Member] | Lines of Credit [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	60	60
Commercial Loans [Member] | Doubtful [Member] | Other Commercial and Industrial [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	296	420
Commercial Loans [Member] | Doubtful [Member] | Tax Exempt Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	0	0
Consumer Loans [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	53,717	54,581
Consumer Loans [Member] | Home Equity and Junior Liens [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	26,116	25,935	24,763
Consumer Loans [Member] | Other Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	27,601	28,646	$ 20,708
Consumer Loans [Member] | Pass [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	53,156	53,980
Consumer Loans [Member] | Pass [Member] | Home Equity and Junior Liens [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	25,703	25,396
Consumer Loans [Member] | Pass [Member] | Other Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	27,453	28,584
Consumer Loans [Member] | Special Mention [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	224	116
Consumer Loans [Member] | Special Mention [Member] | Home Equity and Junior Liens [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	85	61
Consumer Loans [Member] | Special Mention [Member] | Other Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	139	55
Consumer Loans [Member] | Substandard [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	182	311
Consumer Loans [Member] | Substandard [Member] | Home Equity and Junior Liens [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	173	304
Consumer Loans [Member] | Substandard [Member] | Other Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	9	7
Consumer Loans [Member] | Doubtful [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	155	174
Consumer Loans [Member] | Doubtful [Member] | Home Equity and Junior Liens [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	155	174
Consumer Loans [Member] | Doubtful [Member] | Other Consumer [Member]
Financing Receivable Recorded Investment [Line Items]
Total loans	$ 0	$ 0

Loans - Age Analysis of Past Du

Loans - Age Analysis of Past Due Loans Segregated by Portfolio Segment and Class of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017
Recorded Investment, Past Due [Line Items]
Total Past Due	$ 14,057	$ 12,349
Current	594,329	568,895
Total Loans Receivable	608,386	581,244	$ 521,481
30-59 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	6,600	4,259
60-89 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	1,003	3,196
90 Days and Over [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	6,454	4,894
Residential Mortgage Loans [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	3,174	4,209
Current	221,444	218,142
Total Loans Receivable	224,618	222,351
Residential Mortgage Loans [Member] | 30-59 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	823	1,196
Residential Mortgage Loans [Member] | 60-89 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	235	925
Residential Mortgage Loans [Member] | 90 Days and Over [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	2,116	2,088
Residential Mortgage Loans [Member] | 1-4 Family First Lien Residential Mortgages [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	3,174	4,209
Current	215,885	212,584
Total Loans Receivable	219,059	216,793	202,282
Residential Mortgage Loans [Member] | 1-4 Family First Lien Residential Mortgages [Member] | 30-59 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	823	1,196
Residential Mortgage Loans [Member] | 1-4 Family First Lien Residential Mortgages [Member] | 60-89 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	235	925
Residential Mortgage Loans [Member] | 1-4 Family First Lien Residential Mortgages [Member] | 90 Days and Over [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	2,116	2,088
Residential Mortgage Loans [Member] | Construction [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Current	5,559	5,558
Total Loans Receivable	5,559	5,558
Residential Mortgage Loans [Member] | Construction [Member] | 30-59 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Residential Mortgage Loans [Member] | Construction [Member] | 60-89 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Residential Mortgage Loans [Member] | Construction [Member] | 90 Days and Over [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Commercial Loans [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	10,395	7,367
Current	319,656	296,945
Total Loans Receivable	330,051	304,312
Commercial Loans [Member] | 30-59 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	5,623	2,777
Commercial Loans [Member] | 60-89 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	695	2,147
Commercial Loans [Member] | 90 Days and Over [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	4,077	2,443
Commercial Loans [Member] | Real Estate [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	7,830	4,321
Current	199,121	188,204
Total Loans Receivable	206,951	192,525	158,303
Commercial Loans [Member] | Real Estate [Member] | 30-59 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	4,410	720
Commercial Loans [Member] | Real Estate [Member] | 60-89 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	492	2,056
Commercial Loans [Member] | Real Estate [Member] | 90 Days and Over [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	2,928	1,545
Commercial Loans [Member] | Lines of Credit [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	1,109	1,645
Current	51,373	49,486
Total Loans Receivable	52,482	51,131	20,221
Commercial Loans [Member] | Lines of Credit [Member] | 30-59 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	850	1,482
Commercial Loans [Member] | Lines of Credit [Member] | 60-89 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	88	31
Commercial Loans [Member] | Lines of Credit [Member] | 90 Days and Over [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	171	132
Commercial Loans [Member] | Other Commercial and Industrial [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	1,456	1,401
Current	58,929	48,850
Total Loans Receivable	60,385	50,251	75,680
Commercial Loans [Member] | Other Commercial and Industrial [Member] | 30-59 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	363	575
Commercial Loans [Member] | Other Commercial and Industrial [Member] | 60-89 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	115	60
Commercial Loans [Member] | Other Commercial and Industrial [Member] | 90 Days and Over [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	978	766
Commercial Loans [Member] | Tax Exempt Loans [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Current	10,233	10,405
Total Loans Receivable	10,233	10,405	11,959
Commercial Loans [Member] | Tax Exempt Loans [Member] | 30-59 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Commercial Loans [Member] | Tax Exempt Loans [Member] | 60-89 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Commercial Loans [Member] | Tax Exempt Loans [Member] | 90 Days and Over [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Consumer Loans [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	488	773
Current	53,229	53,808
Total Loans Receivable	53,717	54,581
Consumer Loans [Member] | 30-59 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	154	286
Consumer Loans [Member] | 60-89 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	73	124
Consumer Loans [Member] | 90 Days and Over [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	261	363
Consumer Loans [Member] | Home Equity and Junior Liens [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	223	468
Current	25,893	25,467
Total Loans Receivable	26,116	25,935	24,763
Consumer Loans [Member] | Home Equity and Junior Liens [Member] | 30-59 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	18	94
Consumer Loans [Member] | Home Equity and Junior Liens [Member] | 60-89 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	0	74
Consumer Loans [Member] | Home Equity and Junior Liens [Member] | 90 Days and Over [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	205	300
Consumer Loans [Member] | Other Consumer [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	265	305
Current	27,336	28,341
Total Loans Receivable	27,601	28,646	$ 20,708
Consumer Loans [Member] | Other Consumer [Member] | 30-59 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	136	192
Consumer Loans [Member] | Other Consumer [Member] | 60-89 Days Past Due And Accruing [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	73	50
Consumer Loans [Member] | Other Consumer [Member] | 90 Days and Over [Member]
Recorded Investment, Past Due [Line Items]
Total Past Due	$ 56	$ 63

Loans - Nonaccrual Loans Segreg

Loans - Nonaccrual Loans Segregated by Class of Loan (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Nonaccrual loans, Segregated by class of loans [Abstract]
Nonaccrual status loans	$ 6,454	$ 4,894
Residential Mortgage Loans [Member]
Nonaccrual loans, Segregated by class of loans [Abstract]
Nonaccrual status loans	2,116	2,088
Residential Mortgage Loans [Member] | 1-4 Family First Lien Residential Mortgages [Member]
Nonaccrual loans, Segregated by class of loans [Abstract]
Nonaccrual status loans	2,116	2,088
Commercial Loans [Member]
Nonaccrual loans, Segregated by class of loans [Abstract]
Nonaccrual status loans	4,077	2,443
Commercial Loans [Member] | Real Estate [Member]
Nonaccrual loans, Segregated by class of loans [Abstract]
Nonaccrual status loans	2,928	1,545
Commercial Loans [Member] | Lines of Credit [Member]
Nonaccrual loans, Segregated by class of loans [Abstract]
Nonaccrual status loans	171	132
Commercial Loans [Member] | Other Commercial and Industrial [Member]
Nonaccrual loans, Segregated by class of loans [Abstract]
Nonaccrual status loans	978	766
Consumer Loans [Member]
Nonaccrual loans, Segregated by class of loans [Abstract]
Nonaccrual status loans	261	363
Consumer Loans [Member] | Home Equity and Junior Liens [Member]
Nonaccrual loans, Segregated by class of loans [Abstract]
Nonaccrual status loans	205	300
Consumer Loans [Member] | Other Consumer [Member]
Nonaccrual loans, Segregated by class of loans [Abstract]
Nonaccrual status loans	$ 56	$ 63

Loans - Troubled Debt Restructu

Loans - Troubled Debt Restructurings on Financing Receivables (Details) - Other Commercial and Industrial Loans [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)Loan
Troubled Debt Restructuring, Modified [Abstract]
Number of loans | Loan	1
Pre-modification outstanding recorded investment	$ 300
Post-modification outstanding recorded investment	300
Additional provision for loan losses	$ 0

Loans - Summary of Impaired Loa

Loans - Summary of Impaired Loans Information by Portfolio Class (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
With an allowance recorded [Abstract]
Related Allowance	$ 980	$ 1,103
Total [Abstract]
Recorded Investment	9,069	9,243
Unpaid Principal Balance	9,129	9,300
Related Allowance	980	1,103
Residential Mortgage Loans [Member] | 1-4 Family First Lien Residential Mortgages [Member]
With no related allowance recorded [Abstract]
Recorded Investment	894	900
Unpaid Principal Balance	903	909
With an allowance recorded [Abstract]
Recorded Investment	953	958
Unpaid Principal Balance	953	958
Related Allowance	111	210
Total [Abstract]
Recorded Investment	1,847	1,858
Unpaid Principal Balance	1,856	1,867
Related Allowance	111	210
Commercial Loans [Member] | Real Estate [Member]
With no related allowance recorded [Abstract]
Recorded Investment	3,228	3,314
Unpaid Principal Balance	3,278	3,360
With an allowance recorded [Abstract]
Recorded Investment	2,183	2,186
Unpaid Principal Balance	2,183	2,187
Related Allowance	412	320
Total [Abstract]
Recorded Investment	5,411	5,500
Unpaid Principal Balance	5,461	5,547
Related Allowance	412	320
Commercial Loans [Member] | Lines of Credit [Member]
With no related allowance recorded [Abstract]
Recorded Investment	502	507
Unpaid Principal Balance	502	507
With an allowance recorded [Abstract]
Recorded Investment	40	40
Unpaid Principal Balance	40	40
Related Allowance	40	40
Total [Abstract]
Recorded Investment	542	547
Unpaid Principal Balance	542	547
Related Allowance	40	40
Commercial Loans [Member] | Other Commercial and Industrial [Member]
With no related allowance recorded [Abstract]
Recorded Investment	755	523
Unpaid Principal Balance	756	524
With an allowance recorded [Abstract]
Recorded Investment	305	525
Unpaid Principal Balance	305	525
Related Allowance	276	391
Total [Abstract]
Recorded Investment	1,060	1,048
Unpaid Principal Balance	1,061	1,049
Related Allowance	276	391
Consumer Loans [Member] | Home Equity and Junior Liens [Member]
With no related allowance recorded [Abstract]
Recorded Investment	0	80
Unpaid Principal Balance	0	80
With an allowance recorded [Abstract]
Recorded Investment	209	210
Unpaid Principal Balance	209	210
Related Allowance	141	142
Total [Abstract]
Recorded Investment	209	290
Unpaid Principal Balance	209	290
Related Allowance	$ 141	$ 142

Loans - Summary of Average Reco

Loans - Summary of Average Recorded Investment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Average recorded investment [Abstract]
Average recorded investment in impaired loans	$ 9,159	$ 8,190
1-4 Family First Lien Residential Mortgages [Member]
Average recorded investment [Abstract]
Average recorded investment in impaired loans	1,853	1,612
Commercial Real Estate [Member]
Average recorded investment [Abstract]
Average recorded investment in impaired loans	5,456	4,808
Commercial Lines of Credit [Member]
Average recorded investment [Abstract]
Average recorded investment in impaired loans	545	407
Other Commercial and Industrial [Member]
Average recorded investment [Abstract]
Average recorded investment in impaired loans	1,055	1,012
Home Equity and Junior Liens [Member]
Average recorded investment [Abstract]
Average recorded investment in impaired loans	$ 250	$ 351

Loans - Schedule of Cash Basis

Loans - Schedule of Cash Basis Interest Income Recognized on Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash Basis Interest Recognized on Impaired Loans [Abstract]
Cash basis interest income recognized on impaired loans	$ 86	$ 70
1-4 Family First Lien Residential Mortgages [Member]
Cash Basis Interest Recognized on Impaired Loans [Abstract]
Cash basis interest income recognized on impaired loans	18	11
Commercial Real Estate [Member]
Cash Basis Interest Recognized on Impaired Loans [Abstract]
Cash basis interest income recognized on impaired loans	48	45
Commercial Lines of Credit [Member]
Cash Basis Interest Recognized on Impaired Loans [Abstract]
Cash basis interest income recognized on impaired loans	11	6
Other Commercial and Industrial [Member]
Cash Basis Interest Recognized on Impaired Loans [Abstract]
Cash basis interest income recognized on impaired loans	6	7
Home Equity and Junior Liens [Member]
Cash Basis Interest Recognized on Impaired Loans [Abstract]
Cash basis interest income recognized on impaired loans	$ 3	$ 1

Allowance for Loan Losses - Cha

Allowance for Loan Losses - Changes in the Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Allowance for loan losses:
Beginning Balance	$ 7,126	$ 6,247
Charge-offs	(322)	(688)
Recoveries	34	16
Provisions (credits)	613	389
Ending balance	7,451	5,964
Ending balance: related to loans individually evaluated for impairment	980	591
Ending balance: related to loans collectively evaluated for impairment	6,471	5,373
Total Loans Receivable	608,386	521,481	$ 581,244
Ending balance: individually evaluated for impairment	9,069	7,785
Ending balance: collectively evaluated for impairment	599,317	513,696
Unallocated [Member]
Allowance for loan losses:
Beginning Balance	0	0
Charge-offs	0	0
Recoveries	0	0
Provisions (credits)	9	1
Ending balance	9	1
Ending balance: related to loans individually evaluated for impairment	0	0
Ending balance: related to loans collectively evaluated for impairment	9	1
Residential Mortgage Loans [Member]
Allowance for loan losses:
Total Loans Receivable	224,618		222,351
Residential Mortgage Loans [Member] | 1-4 Family First Lien Residential Mortgages [Member]
Allowance for loan losses:
Beginning Balance	865	759
Charge-offs	(118)	(13)
Recoveries	21	1
Provisions (credits)	(17)	196
Ending balance	751	943
Ending balance: related to loans individually evaluated for impairment	111	196
Ending balance: related to loans collectively evaluated for impairment	640	747
Total Loans Receivable	219,059	202,282	216,793
Ending balance: individually evaluated for impairment	1,847	1,611
Ending balance: collectively evaluated for impairment	217,212	200,671
Residential Mortgage Loans [Member] | Residential Construction Mortgage [Member]
Allowance for loan losses:
Beginning Balance	0	0
Charge-offs	0	0
Recoveries	0	0
Provisions (credits)	0	0
Ending balance	0	0
Ending balance: related to loans individually evaluated for impairment	0	0
Ending balance: related to loans collectively evaluated for impairment	0	0
Total Loans Receivable	5,559	7,565
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	5,559	7,565
Commercial Loans [Member]
Allowance for loan losses:
Total Loans Receivable	330,051		304,312
Commercial Loans [Member] | Real Estate [Member]
Allowance for loan losses:
Beginning Balance	3,589	2,935
Charge-offs	0	(505)
Recoveries	0	0
Provisions (credits)	306	102
Ending balance	3,895	2,532
Ending balance: related to loans individually evaluated for impairment	412	0
Ending balance: related to loans collectively evaluated for impairment	3,483	2,532
Total Loans Receivable	206,951	158,303	192,525
Ending balance: individually evaluated for impairment	5,411	4,543
Ending balance: collectively evaluated for impairment	201,540	153,760
Commercial Loans [Member] | Lines of Credit [Member]
Allowance for loan losses:
Beginning Balance	735	397
Charge-offs	0	(53)
Recoveries	0	0
Provisions (credits)	(16)	21
Ending balance	719	365
Ending balance: related to loans individually evaluated for impairment	40	0
Ending balance: related to loans collectively evaluated for impairment	679	365
Total Loans Receivable	52,482	20,221	51,131
Ending balance: individually evaluated for impairment	542	414
Ending balance: collectively evaluated for impairment	51,940	19,807
Commercial Loans [Member] | Other Commercial and Industrial [Member]
Allowance for loan losses:
Beginning Balance	1,214	1,658
Charge-offs	(124)	(16)
Recoveries	0	2
Provisions (credits)	219	(164)
Ending balance	1,309	1,480
Ending balance: related to loans individually evaluated for impairment	276	252
Ending balance: related to loans collectively evaluated for impairment	1,033	1,228
Total Loans Receivable	60,385	75,680	50,251
Ending balance: individually evaluated for impairment	1,060	1,001
Ending balance: collectively evaluated for impairment	59,325	74,679
Commercial Loans [Member] | Tax Exempt Loans [Member]
Allowance for loan losses:
Beginning Balance	1	1
Charge-offs	0	0
Recoveries	0	0
Provisions (credits)	0	0
Ending balance	1	1
Ending balance: related to loans individually evaluated for impairment	0	0
Ending balance: related to loans collectively evaluated for impairment	1	1
Total Loans Receivable	10,233	11,959	10,405
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	10,233	11,959
Consumer Loans [Member]
Allowance for loan losses:
Total Loans Receivable	53,717		54,581
Consumer Loans [Member] | Home Equity and Junior Liens [Member]
Allowance for loan losses:
Beginning Balance	514	331
Charge-offs	(17)	(69)
Recoveries	0	0
Provisions (credits)	10	247
Ending balance	507	509
Ending balance: related to loans individually evaluated for impairment	141	143
Ending balance: related to loans collectively evaluated for impairment	366	366
Total Loans Receivable	26,116	24,763	25,935
Ending balance: individually evaluated for impairment	209	216
Ending balance: collectively evaluated for impairment	25,907	24,547
Consumer Loans [Member] | Other Consumer [Member]
Allowance for loan losses:
Beginning Balance	208	166
Charge-offs	(63)	(32)
Recoveries	13	13
Provisions (credits)	102	(14)
Ending balance	260	133
Ending balance: related to loans individually evaluated for impairment	0	0
Ending balance: related to loans collectively evaluated for impairment	260	133
Total Loans Receivable	27,601	20,708	$ 28,646
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	$ 27,601	$ 20,708

Allowance for Loan Losses - Sch

Allowance for Loan Losses - Schedule of Allowance for Loan Losses on Basis of Calculation Methodology (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Allowance For Loan Losses On Basis Of Calculation Methodology Abstract
Specifically reserved	$ 980		$ 591
Historical loss rate	330		293
Qualitative factors	6,132		5,079
Other	9		1
Total	7,451	$ 7,126	5,964	$ 6,247
Unallocated [Member]
Allowance For Loan Losses On Basis Of Calculation Methodology Abstract
Specifically reserved	0		0
Historical loss rate	0		0
Qualitative factors	0		0
Other	9		1
Total	9	0	1	0
Residential Mortgage Loans [Member] | 1-4 Family First Lien Residential Mortgages [Member]
Allowance For Loan Losses On Basis Of Calculation Methodology Abstract
Specifically reserved	111		196
Historical loss rate	83		102
Qualitative factors	557		645
Total	751	865	943	759
Residential Mortgage Loans [Member] | Residential Construction Mortgage [Member]
Allowance For Loan Losses On Basis Of Calculation Methodology Abstract
Specifically reserved	0		0
Historical loss rate	0		0
Qualitative factors	0		0
Total	0	0	0	0
Commercial Loans [Member] | Real Estate [Member]
Allowance For Loan Losses On Basis Of Calculation Methodology Abstract
Specifically reserved	412		0
Historical loss rate	88		48
Qualitative factors	3,395		2,484
Total	3,895	3,589	2,532	2,935
Commercial Loans [Member] | Lines of Credit [Member]
Allowance For Loan Losses On Basis Of Calculation Methodology Abstract
Specifically reserved	40		0
Historical loss rate	29		32
Qualitative factors	650		333
Total	719	735	365	397
Commercial Loans [Member] | Other Commercial and Industrial [Member]
Allowance For Loan Losses On Basis Of Calculation Methodology Abstract
Specifically reserved	276		252
Historical loss rate	0		55
Qualitative factors	1,033		1,173
Total	1,309	1,214	1,480	1,658
Commercial Loans [Member] | Tax Exempt Loans [Member]
Allowance For Loan Losses On Basis Of Calculation Methodology Abstract
Specifically reserved	0		0
Historical loss rate	0		0
Qualitative factors	1		1
Other	0		0
Total	1	1	1	1
Consumer Loans [Member] | Home Equity and Junior Liens [Member]
Allowance For Loan Losses On Basis Of Calculation Methodology Abstract
Specifically reserved	141		143
Historical loss rate	34		35
Qualitative factors	332		331
Other	0		0
Total	507	514	509	331
Consumer Loans [Member] | Other Consumer [Member]
Allowance For Loan Losses On Basis Of Calculation Methodology Abstract
Specifically reserved	0		0
Historical loss rate	96		21
Qualitative factors	164		112
Other	0		0
Total	$ 260	$ 208	$ 133	$ 166

Foreclosed Real Estate - Summar

Foreclosed Real Estate - Summary of Carrying Amount of Foreclosed Residential Real Estate Properties Held (Details) $ in Thousands	Mar. 31, 2018USD ($)Property	Dec. 31, 2017USD ($)Property
Real Estate Properties [Line Items]
Foreclosed real estate	$ 108	$ 468
Foreclosed Residential Real Estate [Member]
Real Estate Properties [Line Items]
Number of properties | Property	3	5
Foreclosed real estate	$ 108	$ 468

Foreclosed Real Estate - Additi

Foreclosed Real Estate - Additional Information (Details)	Mar. 31, 2018USD ($)
Real Estate Owned Disclosure Of Detailed Components [Abstract]
Residential real estate loans in the process of foreclosure	$ 802,000

Guarantees - Additional Informa

Guarantees - Additional Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2018USD ($)
Standby Letters of Credit [Member]
Loss Contingencies [Line Items]
Maximum amount of loss due to credit risk	$ 2.2

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value of Assets on Recurring Basis Segregated by Level of Valuation Inputs (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Mutual funds:
Marketable equity securities	$ 528	$ 515
Level 2 [Member] | Total Fair Value [Member]
Mutual funds:
Marketable equity securities	528	0
Recurring Basis [Member] | Total Fair Value [Member]
Debt investment securities:
US Treasury, agencies and GSEs	23,104	41,336
State and political subdivisions	11,386	13,681
Corporate	12,083	8,600
Asset backed securities	6,066	6,644
Residential mortgage-backed - US agency	33,748	35,742
Collateralized mortgage obligations - US agency	54,895	53,348
Collateralized mortgage obligations - Private label	17,322	11,052
Mutual funds:
Ultra short mortgage fund		0
Common stock - Financial services industry	195	735
Total available-for-sale securities	158,799	171,138
Marketable equity securities	528
Recurring Basis [Member] | Level 1 [Member]
Debt investment securities:
US Treasury, agencies and GSEs	0	0
State and political subdivisions	0	0
Corporate	0	0
Asset backed securities	0	0
Residential mortgage-backed - US agency	0	0
Collateralized mortgage obligations - US agency	0	0
Collateralized mortgage obligations - Private label	0	0
Mutual funds:
Ultra short mortgage fund		0
Common stock - Financial services industry	0	0
Total available-for-sale securities	0	0
Marketable equity securities	0
Recurring Basis [Member] | Level 2 [Member]
Debt investment securities:
US Treasury, agencies and GSEs	23,104	41,336
State and political subdivisions	11,386	13,681
Corporate	12,083	8,600
Asset backed securities	6,066	6,644
Residential mortgage-backed - US agency	33,748	35,742
Collateralized mortgage obligations - US agency	54,895	53,348
Collateralized mortgage obligations - Private label	17,322	11,052
Mutual funds:
Ultra short mortgage fund		0
Common stock - Financial services industry	195	220
Total available-for-sale securities	158,799	170,623
Marketable equity securities	528
Recurring Basis [Member] | Level 3 [Member]
Debt investment securities:
US Treasury, agencies and GSEs	0	0
State and political subdivisions	0	0
Corporate	0	0
Asset backed securities	0	0
Residential mortgage-backed - US agency	0	0
Collateralized mortgage obligations - US agency	0	0
Collateralized mortgage obligations - Private label	0	0
Mutual funds:
Ultra short mortgage fund		0
Common stock - Financial services industry	0	515
Total available-for-sale securities	0	$ 515
Marketable equity securities	$ 0

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Valuation Techniques and Significant Unobservable Inputs Used for Investments are Categorized Within Level 3 Fair Value Hierarchy (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Marketable equity securities	$ 515	$ 528
Weight ascribed to comparable companies	100.00%

Fair Value Measurements - Sum56

Fair Value Measurements - Summary of Fair Value Assets Measured on Nonrecurring Basis (Details) - Nonrecurring Basis [Member] - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Total Fair Value [Member]
Nonrecurring basis [Abstract]
Impaired loans	$ 525	$ 4,887
Foreclosed real estate	72	434
Level 1 [Member]
Nonrecurring basis [Abstract]
Impaired loans	0	0
Foreclosed real estate	0	0
Level 2 [Member]
Nonrecurring basis [Abstract]
Impaired loans	0	0
Foreclosed real estate	0	0
Level 3 [Member]
Nonrecurring basis [Abstract]
Impaired loans	525	4,887
Foreclosed real estate	$ 72	$ 434

Fair Value Measurements - Fai57

Fair Value Measurements - Fair Value Inputs, Quantitative Information (Details) - Level 3 [Member]	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Impaired Loans [Member] | Minimum [Member] | Appraisal of Collateral - Appraisal Adjustments [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair value inputs, discount rate	5.00%	5.00%
Impaired Loans [Member] | Minimum [Member] | Appraisal of Collateral - Cost to Sell [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair value inputs, discount rate	7.00%	7.00%
Impaired Loans [Member] | Maximum [Member] | Appraisal of Collateral - Appraisal Adjustments [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair value inputs, discount rate	15.00%	30.00%
Impaired Loans [Member] | Maximum [Member] | Appraisal of Collateral - Cost to Sell [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair value inputs, discount rate	13.00%	13.00%
Impaired Loans [Member] | Weighted Average [Member] | Appraisal of Collateral - Appraisal Adjustments [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair value inputs, discount rate	6.00%	9.00%
Impaired Loans [Member] | Weighted Average [Member] | Appraisal of Collateral - Cost to Sell [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair value inputs, discount rate	10.00%	11.00%
Foreclosed Real Estate [Member] | Minimum [Member] | Appraisal of Collateral - Appraisal Adjustments [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair value inputs, discount rate	15.00%	15.00%
Foreclosed Real Estate [Member] | Minimum [Member] | Appraisal of Collateral - Cost to Sell [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair value inputs, discount rate	6.00%	6.00%
Foreclosed Real Estate [Member] | Maximum [Member] | Appraisal of Collateral - Appraisal Adjustments [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair value inputs, discount rate	15.00%	15.00%
Foreclosed Real Estate [Member] | Maximum [Member] | Appraisal of Collateral - Cost to Sell [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair value inputs, discount rate	8.00%	8.00%
Foreclosed Real Estate [Member] | Weighted Average [Member] | Appraisal of Collateral - Appraisal Adjustments [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair value inputs, discount rate	15.00%	15.00%
Foreclosed Real Estate [Member] | Weighted Average [Member] | Appraisal of Collateral - Cost to Sell [Member]
Fair Value Inputs Assets Quantitative Information [Line Items]
Fair value inputs, discount rate	7.00%	7.00%

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Details)	Mar. 31, 2018USD ($)
Common Stock [Member] | Unaffiliated [Member]
Fair Value Disclosures [Line Items]
Investment owned, at fair market value	$ 528,000

Fair Value Measurements - Carry

Fair Value Measurements - Carrying Amounts and Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financial assets:
Investment securities - available-for-sale	$ 158,799	$ 171,138
Marketable equity securities, at fair value	528	515
Investment securities - held-to-maturity	63,226	66,426
Level 1 [Member] | Carrying Amounts [Member]
Financial assets:
Cash and cash equivalents	18,279	21,991
Accrued interest receivable	3,000	3,047
Financial liabilities:
Demand Deposits, Savings, NOW and MMDA	510,141	510,176
Accrued interest payable	218	186
Level 1 [Member] | Estimated Fair Values [Member]
Financial assets:
Cash and cash equivalents	18,279	21,991
Accrued interest receivable	3,000	3,047
Financial liabilities:
Demand Deposits, Savings, NOW and MMDA	510,141	510,176
Accrued interest payable	218	186
Level 2 [Member] | Carrying Amounts [Member]
Financial assets:
Investment securities - available-for-sale	158,799	170,623
Marketable equity securities, at fair value	528	0
Investment securities - held-to-maturity	63,952	66,196
Federal Home Loan Bank stock	3,405	3,855
Financial liabilities:
Time Deposits	233,664	213,427
Borrowings	63,888	73,888
Subordinated loans	15,068	15,059
Level 2 [Member] | Estimated Fair Values [Member]
Financial assets:
Investment securities - available-for-sale	158,799	170,623
Marketable equity securities, at fair value	528	0
Investment securities - held-to-maturity	63,226	66,426
Federal Home Loan Bank stock	3,405	3,855
Financial liabilities:
Time Deposits	232,123	212,453
Borrowings	63,408	73,575
Subordinated loans	14,818	14,953
Level 3 [Member] | Carrying Amounts [Member]
Financial assets:
Investment securities - available-for-sale	0	515
Net loans	600,598	573,705
Level 3 [Member] | Estimated Fair Values [Member]
Financial assets:
Investment securities - available-for-sale	0	515
Net loans	$ 590,542	$ 570,439

Interest Rate Derivatives - Add

Interest Rate Derivatives - Additional Information (Details)	3 Months Ended
	Mar. 31, 2017USD ($)
Derivative Financial Instruments [Abstract]
Proceeds from sale of U.S. Treasury securities	$ 40,000,000
Repurchase agreement period	30 days
Recognized gain on the sale and repurchase of securities	$ 94,000
Recognized tax benefits from reversal of reserves	$ 36,000
Effective tax rate	24.10%
Expected effective tax rate with no impact of hedging	27.60%
After tax interest expenses partially offset	$ 134,000
Reduction in pretax net interest margin	209,000
Increase in after-tax net income	$ 1,000

Accumulated Other Comprehensi61

Accumulated Other Comprehensive Income (Loss) - Changes in the Components of Accumulated Other Comprehensive Income (Loss), Net of Tax (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Changes in the Components of Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Balance		$ 62,144	$ 58,361
Other comprehensive income before reclassifications		(862)	635
Amounts reclassified from AOCI		111	(20)
Cumulative effect of change in measurement of equity securities	[1]	(53)
Balance		62,438	59,838
Retirement Plans [Member]
Changes in the Components of Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Balance		(2,220)	(1,513)
Other comprehensive income before reclassifications		0	0
Amounts reclassified from AOCI		32	23
Cumulative effect of change in measurement of equity securities	[1]	0
Balance		(2,188)	(1,490)
Unrealized Gains and Losses on Available-for-Sale Securities [Member]
Changes in the Components of Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Balance		(1,558)	(1,845)
Other comprehensive income before reclassifications		(878)	613
Amounts reclassified from AOCI		79	(43)
Cumulative effect of change in measurement of equity securities	[1]	(53)
Balance		(2,410)	(1,275)
Unrealized Loss on Securities Transferred to Held-to-Maturity [Member]
Changes in the Components of Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Balance		(430)	(464)
Other comprehensive income before reclassifications		16	22
Amounts reclassified from AOCI		0	0
Cumulative effect of change in measurement of equity securities	[1]	0
Balance		(414)	(442)
AOCI Attributable to Parent [Member]
Changes in the Components of Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Balance		(4,208)	(3,822)
Balance		$ (5,012)	$ (3,207)
[1]	Cumulative effect of unrealized gain on marketable equity securities based on the adoption of ASU 2016-01 - Financial Instruments - Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Liabilities.

Accumulated Other Comprehensi62

Accumulated Other Comprehensive Income (Loss) - Summary of Amounts Reclassified Out of Each Component of AOCI (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Salaries and employee benefits		$ (3,084)	$ (2,850)
Net gains on sales and redemptions of investment securities		13	0
Provision for income taxes		(182)	(245)
Net income attributable to Pathfinder Bancorp Inc.		1,004	800
Reclassification out of Accumulated Other Comprehensive Income [Member] | Available-for-Sale Securities [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Net gains on sales and redemptions of investment securities	[1]	(107)	71
Provision for income taxes	[1]	28	(28)
Net income attributable to Pathfinder Bancorp Inc.	[1]	(79)	43
Reclassification out of Accumulated Other Comprehensive Income [Member] | Retirement Plans [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Salaries and employee benefits	[1],[2]	(43)	(37)
Provision for income taxes	[1],[2]	11	14
Net income attributable to Pathfinder Bancorp Inc.	[1],[2]	$ (32)	$ (23)
[1]	Amounts in parentheses indicates debits in net income.
[2]	These items are included in net periodic pension cost.