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FAIR VALUE OF FINANCIAL INSTRUMENTS (Carrying Amount and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Financial assets:
Securities available for sale	$ 423,265	$ 566,624
Securities held to maturity	448,900	380,100
Financial liabilities:
Noninterest-bearing demand deposits	3,058,014	3,668,673
Carrying Amount
Financial assets:
Cash and due from banks	28,929	28,864
Overnight deposits	679,849	2,330,486
Securities held to maturity	521,376	382,099
Loans, net	4,574,763	3,697,200
Other investments
FRB Stock	11,422	7,430
FHLB Stock	4,564	3,070
Disability Fund	1,000	1,000
Time deposits at banks	498
CRA - CD		498
Receivables from prepaid card programs, net	75,457	39,864
Accrued interest receivable	20,370	15,195
Financial liabilities:
Noninterest-bearing demand deposits	3,058,014	3,668,673
Money market and savings deposits	2,626,532	2,687,913
Time deposits	46,977	78,986
Trust preferred securities payable	20,620	20,620
Subordinated debt, net of issuance cost		24,712
Prepaid debit cardholder balances	9,395	8,847
Accrued interest payable	405	746
Secured Borrowings	26,912	32,461
Total Fair Value
Financial assets:
Cash and due from banks	28,929	28,864
Overnight deposits	679,849	2,330,486
Securities held to maturity	448,868	380,108
Loans, net	4,568,959	3,721,619
Other investments
Disability Fund	1,000	1,000
Time deposits at banks	498
CRA - CD		498
Receivables from prepaid card programs, net	75,457	39,864
Accrued interest receivable	20,370	15,195
Financial liabilities:
Noninterest-bearing demand deposits	3,058,014	3,668,673
Money market and savings deposits	2,626,532	2,687,913
Time deposits	45,609	79,187
Trust preferred securities payable	19,936	19,997
Subordinated debt, net of issuance cost		25,125
Prepaid debit cardholder balances	9,395	8,847
Accrued interest payable	405	746
Secured Borrowings	26,912	32,507
Fair Value, Inputs, Level 1
Financial assets:
Cash and due from banks	28,929	28,864
Overnight deposits	679,849	2,330,486
Other investments
Time deposits at banks	498
CRA - CD		498
Financial liabilities:
Noninterest-bearing demand deposits	3,058,014	3,668,673
Money market and savings deposits	2,626,532	2,687,913
Accrued interest payable	7	5
Fair Value, Inputs, Level 2
Financial assets:
Securities held to maturity	448,868	380,108
Other investments
Disability Fund	1,000	1,000
Accrued interest receivable	773	892
Financial liabilities:
Time deposits	45,609	79,187
Subordinated debt, net of issuance cost		25,125
Accrued interest payable	164	633
Secured Borrowings	26,912	32,507
Fair Value, Inputs, Level 3
Financial assets:
Loans, net	4,568,959	3,721,619
Other investments
Receivables from prepaid card programs, net	75,457	39,864
Accrued interest receivable	19,597	14,303
Financial liabilities:
Trust preferred securities payable	19,936	19,997
Prepaid debit cardholder balances	9,395	8,847
Accrued interest payable	$ 234	$ 108

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