INVESTMENT SECURITIES - Investments classified by contractual maturity date (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Available-for-Sale - Amortized Cost
After two through three years	$ 245
After three through four years	977
After five through fifteen years	10,652
After fifteen years	46,868
Securities not due on a single maturity date	545,135
Available-for-sale securities, Amortized Cost, Total	603,877	$ 531,892
Available-for-Sale - Fair Value
After two through three years	245
After three through four years	995
After five through fifteen years	10,523
After fifteen years	45,828
Securities not due on a single maturity date	507,634
Available-for-sale securities, Fair Value, Total	565,225	478,207
Held-to-Maturity - Amortized Carrying Value
After five through fifteen years	3,246
After fifteen years	2,915
Securities not due on a single maturity date	183,096
Held-to-Maturity, Amortized Carrying Value, Total	189,257	195,023
Held-to-Maturity - Fair Value
After five through fifteen years	2,953
After fifteen years	2,671
Securities not due on a single maturity date	164,418
Held-to-maturity, Fair Value, Total	$ 170,042	$ 171,193

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing after year fifteen. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

No definition available.