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8. Income Taxes (Details 1)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Income Taxes Details 1    
Statutory U.S. income tax rate 34.00% 34.00%
States taxes, net of federal benefit 1.84% 1.95%
Permanent differences 3.54% 1.55%
Change in valuation allowance 0.00% 0.00%
Change in net operating loss carryforwards and tax credits (13.08%) (2.20%)
Other (1.33%) 0.38%
Effective income tax rate 24.97% 35.68%