COMMITMENTS AND CONTINGENCIES (Balances of Commitments and Contingencies) (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Commitments with off-balance sheet risk:
Total commitments with off-balance sheet risk	$ 3,561,883	$ 5,978,063
Commitments to Extend Credit
Commitments with off-balance sheet risk:
Total commitments with off-balance sheet risk	3,411,234	5,825,557
Standby Letters of Credit
Commitments with off-balance sheet risk:
Total commitments with off-balance sheet risk	$ 150,649	$ 152,506