Note 2 - Business Combination (Unaudited)	12 Months Ended
Dec. 31, 2024
Notes to Financial Statements
Business Combination Disclosure [Text Block]	Note 2. Business Combination (unaudited) On September 4, 2024, the Parent Corporation and The First of Long Island Corporation (Nasdaq: FLIC) (“First of Long Island”), parent company of The First National Bank of Long Island entered into a definitive agreement pursuant to which First of Long Island will merge with and into the Parent Corporation, which will be the surviving entity in the transaction. The combined company will operate under the ConnectOne brand, and will have approximately $14 billion in total assets, $11 billion in total deposits, and $11 billion in total loans. Under the terms of the agreement, First of Long Island shareholders will receive 0.5175 shares of Parent Corporation common stock for each share of First of Long Island common stock. The transaction is presently valued at approximately $284 million in aggregate based upon the closing common stock price of $23.97 for ConnectOne as of September 4, 2024. On February 14, 2025, at separate special meetings, the shareholders of both companies approved proposals relating to the pending merger of the Company and FLIC.

Note 2 - Business Combination (Unaudited)

12 Months Ended

Dec. 31, 2024

Business Combination Disclosure [Text Block]

Note 2. Business Combination (unaudited)

On September 4, 2024, the Parent Corporation and The First of Long Island Corporation (Nasdaq: FLIC) (“First of Long Island”), parent company of The First National Bank of Long Island entered into a definitive agreement pursuant to which First of Long Island will merge with and into the Parent Corporation, which will be the surviving entity in the transaction. The combined company will operate under the ConnectOne brand, and will have approximately $14 billion in total assets, $11 billion in total deposits, and $11 billion in total loans.

Under the terms of the agreement, First of Long Island shareholders will receive 0.5175 shares of Parent Corporation common stock for each share of First of Long Island common stock. The transaction is presently valued at approximately $284 million in aggregate based upon the closing common stock price of $23.97 for ConnectOne as of September 4, 2024.

On February 14, 2025, at separate special meetings, the shareholders of both companies approved proposals relating to the pending merger of the Company and FLIC.