SECURITIES - Scheduled Maturities of Securities HTM and the Related Weighted Average Yields (Details) $ in Thousands	Sep. 30, 2022 USD ($)
HTM - Amortized Cost
Amortized cost, one through five years	$ 119
Amortized cost, five through ten years	18,841
Amortized cost, after ten years	865,101
Amortized cost, total	$ 884,061
HTM - Weighted average yield
Weighted average yield, one through five years	0.27%
Weighted average yield, five through ten years	1.03%
Weighted average yield, after ten years	2.09%
Weighted average yield, total	2.07%
HTM - Estimated Fair Value
Estimated fair value, one through five years	$ 110
Estimated fair value, five through ten years	16,892
Estimated fair value, after ten years	767,805
Estimated fair value, total	784,807
Agency Mortgage-backed Securities
HTM - Amortized Cost
Amortized cost, one through five years	119
Amortized cost, five through ten years	18,841
Amortized cost, after ten years	865,101
Amortized cost, total	884,061
HTM - Estimated Fair Value
Estimated fair value, one through five years	110
Estimated fair value, five through ten years	16,892
Estimated fair value, after ten years	767,805
Estimated fair value, total	$ 784,807