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INCOME TAXES (Details - Reconciliation of the statutory U.S. federal rate and effective rates) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Tax Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Federal tax |  |  |  |  |  |  |  |  | $ 8,256 | $ 8,971 | $ 4,229
State franchise tax, net of federal benefit |  |  |  |  |  |  |  |  | 1,332 | 1,799 | 224
Other Non deductible expenses |  |  |  |  |  |  |  |  | 471 | 91 | (11)
Changes in valuation allowance |  |  |  |  |  |  |  |  | 1,760 | (1,045) | 585
Tax Cuts and Jobs Act |  |  |  |  |  |  |  |  | 0 | 13,527 | 0
Gain on change in control |  |  |  |  |  |  |  |  | (8,303) | 0 | 0
Deferred true-ups and other |  |  |  |  |  |  |  |  | (4,254) | (194) | (3,142)
Other reconciling items |  |  |  |  |  |  |  |  | 1,132 | 1,161 | 2,547
Income tax expense (benefit) | $ (2,441) | $ 2,827 | $ 2,505 | $ (2,497) | $ 20,133 | $ 1,112 | $ 3,523 | $ (458) | $ 394 | $ 24,310 | $ 4,432
Federal tax, percent |  |  |  |  |  |  |  |  | 21.00% | 34.00% | 34.00%
State franchise tax, net of federal benefit, percent |  |  |  |  |  |  |  |  | 3.39% | 6.82% | 1.80%
Other Non deductible expenses, percent |  |  |  |  |  |  |  |  | 1.20% | 0.35% | (0.09%)
Changes in valuation allowance, percent |  |  |  |  |  |  |  |  | 4.48% | (3.96%) | 4.70%
Tax Cuts and Jobs Act, percent |  |  |  |  |  |  |  |  | 0.00% | 51.27% | 0.00%
Gain on change in control, percent |  |  |  |  |  |  |  |  | (21.12%) | 0.00% | 0.00%
Deferred true-ups and other, percent |  |  |  |  |  |  |  |  | (10.82%) | (0.74%) | (25.25%)
Other reconciling items, percent |  |  |  |  |  |  |  |  | 2.88% | 4.39% | 20.47%
Income tax expense (benefit), percent |  |  |  |  |  |  |  |  | 1.00% | 92.13% | 35.64%

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