10. INCOME TAXES (Details - Income tax expense (benefit)) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Federal current tax									$ 237	$ 0	$ 0
State current tax									1,705	1,283	643
Other current tax									28	29	(39)
Federal deferred tax									3,625	869	3,794
State deferred tax									412	(214)	(888)
Income tax expense	$ 1,707	$ 5,199	$ 2,192	$ (3,091)	$ 2,878	$ 2,334	$ 1,233	$ (4,478)	$ 6,007	$ 1,967	$ 3,510