BORROWED FUNDS - Long-term Borrowings (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Long-term Borrowing
Long-term borrowings	$ 154,423	$ 165,451
Loans maturing in 2025 with a weighted-average rate of 4.30%
Long-term Borrowing
Rate	4.38%	4.38%
Loans maturing in 2026 with a weighted-average rate of 4.61%
Long-term Borrowing
Rate	4.61%	4.61%
Loans maturing in 2027 with a weighted-average rate of 4.24%
Long-term Borrowing
Rate	4.24%	4.24%
Loans maturing in 2028 with a weighted-average rate of 4.30%
Long-term Borrowing
Rate	4.30%	4.30%
Loans maturing in 2029 with a weighted-average rate of 4.42%
Long-term Borrowing
Rate	4.42%	4.42%
Federal Home Loan Bank of Pittsburgh
Long-term Borrowing
Long-term borrowings	$ 154,423	$ 165,451
Federal Home Loan Bank of Pittsburgh | Loans maturing in 2025 with a weighted-average rate of 4.30%
Long-term Borrowing
Long-term borrowings	33,488	44,516
Federal Home Loan Bank of Pittsburgh | Loans maturing in 2026 with a weighted-average rate of 4.61%
Long-term Borrowing
Long-term borrowings	48,018	48,018
Federal Home Loan Bank of Pittsburgh | Loans maturing in 2027 with a weighted-average rate of 4.24%
Long-term Borrowing
Long-term borrowings	34,571	34,571
Federal Home Loan Bank of Pittsburgh | Loans maturing in 2028 with a weighted-average rate of 4.30%
Long-term Borrowing
Long-term borrowings	26,027	26,027
Federal Home Loan Bank of Pittsburgh | Loans maturing in 2029 with a weighted-average rate of 4.42%
Long-term Borrowing
Long-term borrowings	$ 12,319	$ 12,319