DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule Of Financial Instruments Fair Value (Details) $ in Thousands	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Junior Subordinated Debt
Financial Instruments Owned Carrying Amount	$ 25,774	$ 25,774
Financial Instruments, Owned, at Fair Value	$ 25,774	$ 25,774
Fair Value Hierarchy Level	3	3
Subordinated Debt
Financial Instruments Owned Carrying Amount	$ 74,058	$ 73,984
Financial Instruments, Owned, at Fair Value	$ 77,250	$ 81,000
Fair Value Hierarchy Level	2	2
Deposits
Financial Instruments Owned Carrying Amount	$ 4,489,337	$ 4,552,101
Financial Instruments, Owned, at Fair Value	$ 4,482,961	$ 4,552,202
Fair Value Hierarchy Level	3	3
Short-term borrowings
Financial Instruments Owned Carrying Amount	$ 150,961	$ 138,955
Financial Instruments, Owned, at Fair Value	$ 150,961	$ 138,955
Fair Value Hierarchy Level	3	3
Unrecognized financial instruments (net of contractual value) | Commitments to originate loans
Fair Value Hierarchy Level	3	3
Unrecognized financial instruments (net of contractual value) | Letter of credit
Financial Instruments Owned Carrying Amount	$ 30	$ 50
Financial Instruments, Owned, at Fair Value	$ 30	$ 50
Fair Value Hierarchy Level	3	3
Unrecognized financial instruments (net of contractual value) | Line of credit
Fair Value Hierarchy Level	3	3
Interest payable
Financial Instruments Owned Carrying Amount	$ 1,656	$ 646
Financial Instruments, Owned, at Fair Value	$ 1,656	$ 646
Fair Value Hierarchy Level	3	3
Loans Receivable
Financial Instruments Owned Carrying Amount	$ 4,111,487	$ 4,007,500
Financial Instruments, Owned, at Fair Value	$ 4,088,157	$ 4,001,362
Fair Value Hierarchy Level	3	3
Cash and Cash Equivalents
Financial Instruments Owned Carrying Amount	$ 353,038	$ 717,267
Financial Instruments, Owned, at Fair Value	$ 353,038	$ 717,267
Fair Value Hierarchy Level	1	1
Held-to-maturity securities
Financial Instruments Owned Carrying Amount	$ 227,441
Financial Instruments, Owned, at Fair Value	$ 220,188
Fair Value Hierarchy Level	2	2
Mortgage loans held for sale
Financial Instruments Owned Carrying Amount	$ 1,672	$ 8,735
Financial Instruments, Owned, at Fair Value	$ 1,672	$ 8,735
Fair Value Hierarchy Level	2	2
Accrued interest receivable
Financial Instruments Owned Carrying Amount	$ 12,458	$ 10,705
Financial Instruments, Owned, at Fair Value	$ 12,458	$ 10,705
Fair Value Hierarchy Level	3	3
Investment in FHLB stock and other assets
Financial Instruments Owned Carrying Amount	$ 6,564	$ 6,655
Financial Instruments, Owned, at Fair Value	$ 6,564	$ 6,655
Fair Value Hierarchy Level	3	3