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DERIVATIVES AND HEDGING ACTIVITIES (Tables) | 3 Months Ended
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Mar. 31, 2024
DERIVATIVES AND HEDGING ACTIVITIES |
Schedule of fair value of derivative financial instruments and classification on consolidated statements of financial condition | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2024 | ​ | December 31, 2023
​ | ​ | Notional | ​ | Fair Value | ​ | Notional | ​ | Fair Value
(In thousands) |  | Amount |  | Assets |  | Amount | ​ | Assets
Derivatives designated as hedging instruments: |  | ​ |  |  | ​ |  |  | ​ |  | ​ | ​ |
Cash flow hedges - interest rate products |  | $ | 150,000 | ​ | $ | 13,107 |  | $ | 150,000 | ​ | $ | 12,492
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Derivatives not designated as hedging instruments | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Interest rate products | ​ | ​ | 1,605,675 | ​ | ​ | 122,055 |  | ​ | 1,682,961 | ​ | ​ | 114,671
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2024 | ​ | December 31, 2023
​ | ​ | Notional | ​ | Fair Value | ​ | Notional | ​ | Fair Value
(In thousands) |  | Amount |  | Liabilities |  | Amount | ​ | Liabilities
Derivatives designated as hedging instruments: |  | ​ |  |  | ​ |  |  | ​ |  | ​ | ​ |
Fair value hedges - interest rate products |  | $ | 500,000 | ​ | $ | 1,353 | ​ | $ | 500,000 | ​ | $ | 6,594
Cash flow hedges - interest rate products | ​ | ​ | 200,000 | ​ | ​ | 1,067 | ​ | ​ | 200,000 | ​ | ​ | 5,031
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Derivatives not designated as hedging instruments: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Interest rate products | ​ | ​ | 1,605,675 | ​ | ​ | 122,055 | ​ | ​ | 1,682,961 | ​ | ​ | 114,671
Other contracts | ​ | ​ | 93,726 | ​ | ​ | 8 | ​ | ​ | 93,891 | ​ | ​ | 24
Schedule of fair value and cash flow hedge accounting on the consolidated statements of operations | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2024 | ​ | March 31, 2023
​ | ​ | Interest | ​ | Interest | ​ | Interest | ​ | Interest
(In thousands) | ​ | Income | ​ | Expense | ​ | Income | ​ | Expense
Effects of fair value or cash flow hedges are recorded | ​ | $ | 628 | ​ | $ | 2,435 | ​ | $ | — | ​ | ​ | 1,534
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
The effects of fair value and cash flow hedging: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Gain or (loss) on fair value hedging relationships | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Interest contracts: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Hedged items | ​ | ​ | (5,273) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
Derivatives designated as hedging instruments | ​ | ​ | 5,901 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | —
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Gain or (loss) on cash flow hedging relationships | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Interest contracts: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Gain (loss) reclassified from AOCI into income | ​ | ​ | — | ​ | ​ | 2,435 | ​ | ​ | — | ​ | ​ | 1,534
Schedule of cumulative basis adjustment for fair value hedges | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2024 | ​ | December 31, 2023
(In thousands) |  | Carrying Amount of the Hedged Assets | ​ | Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets | ​ | Carrying Amount of the Hedged Assets | ​ | Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets
Fixed Rate Loans |  | $ | 720,781 | ​ | $ | 1,318 |  | $ | 736,098 | ​ | $ | 6,591
Schedule of effect of cash flow hedge accounting on accumulated other comprehensive income (loss) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended
​ | ​ | March 31,
(In thousands) | ​ | 2024 |  | 2023
Gain (loss) recognized in other comprehensive income (loss) | ​ | $ | 2,145 | ​ | $ | (2,111)
(Loss) gain reclassified from other comprehensive income into interest expense | ​ |  | (2,435) | ​ |  | 313
Not Designated as Hedging Instrument |
DERIVATIVES AND HEDGING ACTIVITIES |
Schedule of fair value of derivative financial instruments and classification on consolidated statements of financial condition | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, 2024
​ | ​ | ​ | ​ | Notional | ​ | Fair Value | ​ | Fair Value
(Dollars in thousands) |  | Count |  | Amount |  | Assets |  | Liabilities
Included in derivative assets/(liabilities): | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Loan level interest rate swaps with borrower |  | 27 | ​ | $ | 267,414 | ​ | $ | 3,073 | ​ | $ | —
Loan level interest rate swaps with borrower |  | 198 | ​ | ​ | 1,335,326 | ​ | ​ | — | ​ | ​ | 118,808
Loan level interest rate floors with borrower | ​ | 2 | ​ | ​ | 2,935 | ​ | ​ | — | ​ | ​ | 174
Loan level interest rate swaps with third-party counterparties |  | 27 | ​ |  | 267,414 | ​ |  | — | ​ |  | 3,073
Loan level interest rate swaps with third-party counterparties | ​ | 198 | ​ | ​ | 1,335,326 | ​ | ​ | 118,808 | ​ | ​ | —
Loan level interest rate floors with third-party counterparties |  | 2 | ​ |  | 2,935 | ​ |  | 174 | ​ |  | —
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, 2023
​ | ​ | ​ | ​ | Notional | ​ | Fair Value | ​ | Fair Value
(Dollars in thousands) |  | Count |  | Amount |  | Assets |  | Liabilities
Included in derivative assets/(liabilities): | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Loan level interest rate swaps with borrower |  | 49 | ​ | $ | 491,394 | ​ | $ | 10,985 | ​ | $ | —
Loan level interest rate swaps with borrower |  | 178 | ​ |  | 1,121,085 | ​ |  | — | ​ |  | 103,570
Loan level interest rate floors with borrower | ​ | 2 | ​ | ​ | 29,721 | ​ | ​ | — | ​ | ​ | —
Loan level interest rate floors with borrower | ​ | 7 | ​ | ​ | 40,761 | ​ | ​ | — | ​ | ​ | 116
Loan level interest rate swaps with third-party counterparties |  | 49 | ​ |  | 491,394 | ​ |  | — | ​ |  | 10,985
Loan level interest rate swaps with third-party counterparties | ​ | 178 | ​ | ​ | 1,121,085 | ​ | ​ | 103,570 | ​ | ​ | —
Loan level interest rate floors with third-party counterparties |  | 2 | ​ |  | 29,721 | ​ |  | — | ​ |  | —
Loan level interest rate floors with third-party counterparties | ​ | 7 | ​ | ​ | 40,761 | ​ | ​ | 116 | ​ | ​ | —
Schedule of loan level derivative income | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended
​ | ​ | March 31,
(In thousands) | ​ | 2024 |  | 2023
Loan level derivative income | ​ | $ | 406 | ​ | $ | 3,133

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