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FAIR VALUE OF FINANCIAL INSTRUMENTS (Carrying Amount and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Financial assets:
Securities available for sale	$ 465,661	$ 566,624
Securities held to maturity	486,000	380,100
Financial liabilities:
Noninterest-bearing demand deposits	3,470,325	3,668,673
Carrying Amount
Financial assets:
Cash and due from banks	33,143	28,864
Overnight deposits	1,308,738	2,330,486
Securities held to maturity	530,740	382,099
Loans, net	4,334,631	3,697,200
Other investments
FRB Stock	11,421	7,430
FHLB Stock	4,438	3,070
Disability Fund	1,000	1,000
Time deposits at banks	498
CRA - CD		498
Receivables from prepaid card programs, net	68,214	39,864
Accrued interest receivable	18,203	15,195
Financial liabilities:
Noninterest-bearing demand deposits	3,470,325	3,668,673
Money market and savings deposits	2,651,675	2,687,913
Time deposits	56,400	78,986
Trust preferred securities payable	20,620	20,620
Subordinated debt, net of issuance cost		24,712
Prepaid debit cardholder balances	23,531	8,847
Accrued interest payable	367	746
Secured Borrowings	32,044	32,461
Total Fair Value
Financial assets:
Cash and due from banks	33,143	28,864
Overnight deposits	1,308,738	2,330,486
Securities held to maturity	485,988	380,108
Loans, net	4,369,905	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	68,214	39,864
Accrued interest receivable	18,203	15,195
Financial liabilities:
Noninterest-bearing demand deposits	3,470,325	3,668,673
Money market and savings deposits	2,651,675	2,687,913
Time deposits	55,361	79,187
Trust preferred securities payable	19,936	19,997
Subordinated debt, net of issuance cost		25,125
Prepaid debit cardholder balances	23,531	8,847
Accrued interest payable	367	746
Secured Borrowings	32,044	32,507
Fair Value, Inputs, Level 1
Financial assets:
Cash and due from banks	33,143	28,864
Overnight deposits	1,308,738	2,330,486
Other investments
Time deposits at banks	498
CRA - CD		498
Financial liabilities:
Noninterest-bearing demand deposits	3,470,325	3,668,673
Money market and savings deposits	2,651,675	2,687,913
Accrued interest payable	4	5
Fair Value, Inputs, Level 2
Financial assets:
Securities held to maturity	485,988	380,108
Other investments
Disability Fund	1,000	1,000
Accrued interest receivable	860	892
Financial liabilities:
Time deposits	55,361	79,187
Subordinated debt, net of issuance cost		25,125
Accrued interest payable	208	633
Secured Borrowings	32,044	32,507
Fair Value, Inputs, Level 3
Financial assets:
Loans, net	4,369,905	3,721,619
Other investments
Receivables from prepaid card programs, net	68,214	39,864
Accrued interest receivable	17,343	14,303
Financial liabilities:
Trust preferred securities payable	19,936	19,997
Prepaid debit cardholder balances	23,531	8,847
Accrued interest payable	$ 155	$ 108

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