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INCOME TAXES (Details 1) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]      
Computed statutory federal income tax provision $ 73,028 $ 32,902 $ 32,096
State taxes, net of federal tax benefit 19,728 8,754 8,147
Low Income Housing Project Investments (3,364) (2,308) (1,851)
Nontaxable interest, net (3,191) (1,022) (723)
Increase in cash surrender value of life insurance (1,885) (1,405) (1,345)
Effective Income Tax Rate Reconciliation, Increase in uncertain positions, amount (1,035) 50 0
Stock-based compensation (202) (372) (1,067)
Effective Income Tax Rate Reconciliation, CARES Act, Amount 0 0 (4,809)
Change in valuation allowance 52 26 0
Merger and other related costs (non-deductible) 0 630 0
Other, net 810 (1,572) 1,221
Income tax benefit $ 83,941 $ 35,683 $ 31,669
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]      
Computed statutory federal income tax provision 21.00% 21.00% 21.00%
State taxes, net of federal tax benefit 5.67% 5.59% 5.33%
Low Income Housing Project Investments (0.97%) (1.47%) (1.21%)
Nontaxable interest, net (0.92%) (0.65%) (0.47%)
Increase in cash surrender value of life insurance (0.54%) (0.90%) (0.88%)
Increase (decrease) in uncertain positions (0.30%) 0.03% 0.00%
Stock-based compensation (0.06%) (0.24%) (0.70%)
Effective Income Tax Rate Reconciliation, CARES Act, Percent 0.00% 0.00% (3.15%)
Change in valuation allowance 0.01% 0.02% 0.00%
Merger and other related costs (non-deductible) 0.00% 0.40% 0.00%
Other, net 0.25% (1.00%) 0.80%
Total expense 24.14% 22.78% 20.72%