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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Accumulated Other Comprehensive Income, Net of Tax (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Beginning balance | $ 1,489,026 | $ 1,411,863
Other comprehensive income/(loss) before reclassifications | 13,603 | 40,821
Amounts reclassified from AOCI | (3,264) | (4,794)
Other comprehensive income net of tax | 10,339 | 36,027
Ending balance | 1,525,646 | 1,480,343
Accumulated Other Comprehensive Loss |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Beginning balance | (12,147) | (40,145)
Other comprehensive income net of tax | 10,339 | 36,027
Ending balance | (1,808) | (4,118)
AOCI, Securities | Available-for-Sale Securities |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Beginning balance | (37,575) | (68,447)
Other comprehensive income/(loss) before reclassifications | 17,194 | 31,565
Amounts reclassified from AOCI | (3) | (4)
Other comprehensive income net of tax | 17,191 | 31,561
Ending balance | (20,384) | (36,886)
AOCI, Securities | Held-to-Maturity Securities |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Beginning balance | (9,226) | (8,724)
Other comprehensive income/(loss) before reclassifications | 0 | 0
Amounts reclassified from AOCI | (239) | (500)
Other comprehensive income net of tax | (239) | (500)
Ending balance | (9,465) | (9,224)
AOCI, Cash Flow Hedge |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |
Beginning balance | 34,654 | 37,026
Other comprehensive income/(loss) before reclassifications | (3,591) | 9,256
Amounts reclassified from AOCI | (3,022) | (4,290)
Other comprehensive income net of tax | (6,613) | 4,966
Ending balance | $ 28,041 | $ 41,992

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