| Business Combination [Table Text Block] |
| | | As of | |
| | | June 1, 2025 | |
| (dollars in thousands, except for per share data) | | | | |
| Purchase Price Consideration | | | | |
| FLIC common shares settled for stock | | | 22,783,572 | |
| Exchange Ratio | | | 0.5175 | |
| ConnectOne shares entitlement | | | 11,790,499 | |
| Fractional shares subject to cash in lieu | | | (383 | ) |
| ConnectOne whole shares issued | | | 11,790,116 | |
| Price per share of ConnectOne common stock on June 1, 2025 | | $ | 22.97 | |
| Total fair value of stock consideration issued | | $ | 270,819 | |
| Cash consideration paid | | | 9 | |
| Total purchase price consideration | | $ | 270,828 | |
| | | As of | | | Measurement | | | As of | |
| | | June 1, 2025 | | | Period Adjustments | | | June 1, 2025 | |
| | | (dollars in thousands) | |
| | | | | | | | | | | | | |
| Total purchase price consideration | | $ | 270,828 | | | | | | | $ | 270,828 | |
| | | | | | | | | | | | | |
| Fair Value of Assets Acquired: | | | | | | | | | | | | |
| Cash and cash equivalents | | | 54,869 | | | | - | | | | 54,869 | |
| Available-for-sale Securities | | | 596,702 | | | | - | | | | 596,702 | |
| Loans receivables, net | | | 2,882,951 | | | | - | | | | 2,882,951 | |
| Restricted stock, at cost | | | 24,276 | | | | - | | | | 24,276 | |
| Premises and equipment, net | | | 45,895 | | | | - | | | | 45,895 | |
| Bank-owned life insurance | | | 118,098 | | | | - | | | | 118,098 | |
| Pension plan assets | | | 11,617 | | | | - | | | | 11,617 | |
| Core deposit intangible | | | 63,206 | | | | - | | | | 63,206 | |
| Other assets | | | 107,480 | | | | (4,624 | ) | | | 102,856 | |
| Total assets acquired | | $ | 3,905,094 | | | $ | (4,624 | ) | | $ | 3,900,470 | |
| | | | | | | | | | | | | |
| Fair Value of Liabilities Assumed: | | | | | | | | | | | | |
| Deposits | | | 3,251,147 | | | | - | | | | 3,251,147 | |
| Borrowings | | | 360,405 | | | | - | | | | 360,405 | |
| Other liabilities | | | 29,953 | | | | - | | | | 29,953 | |
| Total liabilities assumed | | $ | 3,641,505 | | | $ | - | | | $ | 3,641,505 | |
| | | | | | | | | | | | | |
| Net assets acquired | | $ | 263,589 | | | $ | (4,624 | ) | | $ | 258,965 | |
| | | | | | | | | | | | | |
| Goodwill recorded in acquisition | | $ | 7,239 | | | $ | 4,624 | | | $ | 11,863 | |
|
| Schedule of Receivables Acquired [Table Text Block] |
| | | | |
| | | | | | | | | | | Gross-up for PCD | | | | | |
| | | Unpaid Principal | | | Total Discount at | | | Allowance for Credit | | | Fair Value of PCD | |
| (dollars in thousands) | | Balance | | | Acquisition | | | Losses at Acquisition | | | Loans at Acquisition | |
| PCD Loans | | $ | 271,904 | | | $ | (34,394 | ) | | $ | (43,336 | ) | | $ | 194,174 | |
| Non-PCD Loans | | | 2,860,661 | | | | (171,884 | ) | | | - | | | | 2,688,777 | |
| Total PCD Loans | | $ | 3,132,565 | | | $ | (206,278 | ) | | $ | (43,336 | ) | | $ | 2,882,951 | |
|