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Significant Accounting Policies (Policies) | 3 Months Ended
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Mar. 31, 2025
Accounting Policies [Abstract] |
Nature of Operations [Policy Text Block] | Nature of Operations ConnectOne Bancorp, Inc. (the “Parent Corporation”) is incorporated under the laws of the State of New Jersey and is a registered bank holding company under the Bank Holding Company Act of 1956, as amended (the “BHCA”). The Parent Corporation’s business currently consists of the operation of its wholly-owned subsidiary, ConnectOne Bank (the “Bank” and, collectively with the Parent Corporation and the Parent Corporation’s subsidiaries, the “Company”) and making certain limited investments. The Bank’s direct and indirect subsidiaries include Union Investment Co. (a New Jersey investment company), Twin Bridge Investment Co. (a Delaware investment company), ConnectOne Preferred Funding Corp. (a New Jersey real estate investment trust), Center Financial Group, LLC (a New Jersey financial services company), Center Advertising, Inc. (a New Jersey advertising company), Morris Property Company, LLC, (a New Jersey limited liability company), Volosin Holdings, LLC, (a New Jersey limited liability company), NJCB Spec-1, LLC (a New Jersey limited liability company), Port Jervis Holdings, LLC (a New Jersey limited liability company), BONJ Special Properties, LLC (a New Jersey limited liability company) and BoeFly, Inc. (a New Jersey financial technology company). The Bank is a community-based, full-service New Jersey-chartered commercial bank that was founded in 2005. The Bank operates from its headquarters located at 301 Sylvan Avenue in the Borough of Englewood Cliffs, Bergen County, New Jersey and through its 23 other banking offices. Substantially all loans are secured with various types of collateral, including business assets, consumer assets and commercial/residential real estate. Each borrower’s ability to repay its loans is dependent on the conversion of assets, cash flows generated from the borrowers’ business, real estate rental and consumer wages.
Basis of Accounting, Policy [Policy Text Block] | Basis of Presentation and Principles of Consolidation The consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles. The consolidated financial statements of the Parent Corporation are prepared on an accrual basis and include the accounts of the Parent Corporation and the Company. All significant intercompany accounts and transactions have been eliminated from the accompanying consolidated financial statements
Segment Reporting, Policy [Policy Text Block] | Segment Reporting The Company’s operations are solely in the financial services industry. The Company provides a range of regional community banking services to commercial and retail clients. The Company's reportable segment is determined by the Chief Executive Officer, who is designated the Chief Operating Decision Maker ("CODM"), based upon information about the Company's products and services offered, primarily it's banking operations. The segment is also distinguished by the level of information provided to the CODM, who uses such information to review performance of various components of the business (such as branches and the subsidiary bank), which are then aggregated if operating performance, products/services, and customers are similar. The CODM will evaluate the financial performance of the Company's business components such as by evaluating revenue streams, significant expenses, and budget to actual results in assessing the Company's segment and in the determination of allocating resources. The CODM uses revenue streams to evaluate product pricing and significant expenses to assess performance and evaluate return on assets. The CODM uses consolidated net income to benchmark the Company against its competitors. The benchmarking analysis coupled with monitoring of budget to actual results are used in assessment of performance and in establishing compensation. Loans, investments, and deposits provide the revenues in the banking operation. Interest expense, provision for credit losses, and payroll provide the significant expenses in the banking operation. All operations are domestic. See Note 14 for disclosures related to the reportable segment.
Use of Estimates, Policy [Policy Text Block] | Use of Estimates In preparing the consolidated financial statements, management has made estimates and assumptions that affect the reported amounts of assets and liabilities as of the dates of the consolidated statements of condition and that affect the results of operations for the periods presented. Actual results could differ significantly from those estimates.
Reclassification, Comparability Adjustment [Policy Text Block] | Reclassifications Certain reclassifications have been made to amounts reported in prior periods to conform to the current period presentation. The reclassifications had no material effect on net income or total stockholders' equity.
New Accounting Pronouncements, Policy [Policy Text Block] | Note 1b. Authoritative Accounting Guidance Adoption of New Accounting Standards in 2025 In December 2023, the Financial Accounting Standards Board (“FASB”) issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. These amendments require that public business entities on an annual basis (1) disclose specific categories in the rate reconciliation and (2) provide additional information for reconciling items that meet a quantitative threshold (if the effect of those reconciling items is equal to or greater than 5% of the amount computed by multiplying pretax income (or loss) by the applicable statutory income tax rate). The amendments require that all entities disclose on an annual basis the following information about income taxes paid: 1) The amount of income taxes paid (net of refunds received) disaggregated by federal (national), state, and foreign taxes. 2) The amount of income taxes paid (net of refunds received) disaggregated by individual jurisdictions in which income taxes paid (net of refunds received) is equal to or greater than 5% of total income taxes paid (net of refunds received). The amendments also require that all entities disclose the following information: 1) Income (or loss) from continuing operations before income tax expense (or benefit) disaggregated between domestic and foreign and 2) Income tax expense (or benefit) from continuing operations disaggregated by federal (national), state, and foreign. The Company adopted ASU 2023-09 on January 1, 2025. Newly Issued, But Not Yet Effective Accounting Standards In November 2024, the FASB issued Accounting Standards Update 2024-03, "Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40)" ("ASU 2024-03"). ASU 2024-03 requires public entities to provide disaggregated disclosures, in the notes to the financial statements, of certain categories of expenses that are included in expense line items on the face of the income statement. ASU 2024-03 is effective for the Company on January 1, 2027. The Company is currently not expecting the ASU to have a material effect on the consolidated financial statements and footnotes.

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