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Basis of Presentation (Policies) | 3 Months Ended
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Mar. 31, 2017
Basis of Presentation [Abstract] |
Basis of Presentation | Citizens Financial Services, Inc. (individually and collectively with its direct and indirect subsidiaries, the "Company") is a Pennsylvania corporation and the holding company of its wholly owned subsidiary, First Citizens Community Bank (the "Bank"), and of the Bank's wholly owned subsidiary, First Citizens Insurance Agency, Inc. ("First Citizens Insurance"). The accompanying consolidated financial statements have been prepared pursuant to rules and regulations of the Securities and Exchange Commission ("SEC") and in conformity with U.S. generally accepted accounting principles. Because this report is based on an interim period, certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles have been condensed or omitted. Certain of the prior year amounts have been reclassified to conform with the current year presentation. Such reclassifications had no effect on net income or stockholders' equity. All material inter‑company balances and transactions have been eliminated in consolidation. In the opinion of management of the Company, the accompanying interim financial statements at March 31, 2017 and for the periods ended March 31, 2017 and 2016 include all adjustments, consisting of only normal recurring adjustments, necessary for a fair presentation of the financial condition and the results of operations for the periods. In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the balance sheet and revenues and expenses for the period. The financial performance reported for the Company for the three month period ended March 31, 2017 is not necessarily indicative of the results to be expected for the full year. This information should be read in conjunction with the Company's Annual Report on Form 10-K for the year ended December 31, 2016.

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