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7. Income Taxes (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Income Tax Disclosure [Abstract]          
Unrecognized tax benefits $ 0   $ 0   $ 0
Deferred tax asset 40,350   40,350   $ 37,597
U.S. federal deferred tax assets 32,400   32,400    
State deferred tax assets 8,000   8,000    
Income tax expense $ 5,053 $ 6,663 $ 10,068 $ 13,079  
Effective income tax rate     41.00% 44.00%