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11. INCOME TAXES (Details - Income tax expense (benefit)) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax Disclosure [Abstract]                      
Federal current tax                 $ 88 $ 237 $ 0
State current tax                 914 1,705 1,283
Other current tax                 28 28 29
Federal deferred tax                 2,539 3,625 869
State deferred tax                 863 412 (214)
Income tax expense $ 1,901 $ 1,458 $ 2,253 $ (1,180) $ 1,707 $ 5,199 $ 2,192 $ (3,091) $ 4,432 $ 6,007 $ 1,967