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INCOME TAXES (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Deferred tax assets: |  |
Credit losses | $ 48,505 | $ 18,938
Benefit plans | 3,332 | 3,507
Acquisition accounting | 10,038 | 16,021
Lease right-of-Use Asset | 14,893 | 13,507
Stock grants | 2,305 | 2,032
OREO | 2,971 | 3,295
Securities available for sale | 1,017 | 1,169
Net operating losses | 47,463 | 55,023
Nonaccrual loans | 2,011 | 3,243
Other | 7,287 | 4,227
Total deferred tax assets | 139,822 | 120,962
Deferred tax liabilities: |  |
Acquisition accounting | 16,271 | 19,815
Lease right-of-use liability | 12,012 | 11,191
Premises and equipment | 19,066 | 6,696
Securities available for sale | 19,714 | 10,069
Other | 674 | 511
Total deferred tax liabilities | 67,737 | 48,282
Net deferred tax asset | $ 72,085 | $ 72,680

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