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10. Income Taxes (Tables)
12 Months Ended
Dec. 31, 2016
Income Tax Disclosure [Abstract]  
Reconciliation of income tax provision
   December 31, 
   2016   2015 
Computed tax provision (benefit) at federal statutory rate (34%)  $(593,000)  $(1,065,000)
State income taxes, net of federal benefit (8.84%)   (154,000)   (277,000)
Valuation allowance   747,800    1,342,800 
Income tax provision  $800   $800 
Net operating loss carryforwards
   December 31, 
   2016   2015 
Net operating loss carry forwards  $21,552,000   $21,000,000 
Stock based compensation   (181,000)   (299,000)
Non-cash interest and financing expenses   (663,000)   (306,000)
Other temporary differences   (81,000)   (151,000)
Valuation allowance   (20,627,000)   (20,233,000)
Total deferred taxes net of valuation allowance  $   $