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Note 9 - Income Taxes (Tables)
9 Months Ended
Sep. 30, 2015
Notes Tables  
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
   
Nine Months Ended September 30,
 
   
2015
   
2014
 
                 
Current:
               
Federal
  $ 1,043,650     $ 281,748  
State
    15,859       25,572  
Total Current Provision
    1,059,509       307,320  
Deferred:
               
Federal
  $ (331,750 )   $ (191,472 )
State
    ----       381,345  
Total deferred
    (331,750 )     189,873  
Income tax expense/(benefit)
  $ 727,759     $ 497,193  
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
   
Nine Months Ended
 
   
September 30,
 
   
2015
   
2014
 
Income tax benefit at federal statutory rate [34%]
  $ 1,204,274     $ 438,244  
Change in capitalized inventory (Section 263A)
     --       3,159  
Change in other accruals
    32,217       (27,936 )
Difference between tax and book depreciation
    (24,312 )     (91,385 )
Stock-based compensation
    (39,234 )     (97,041 )
Research and development credits
    (973,649 )     (109,193 )
Domestic production activities deduction
    (109.989 )     --  
Net operating loss carryforward
    954,581       --  
Tax carryback
    (511,158 )     --  
Provision to 2014 tax return true up     195,029        --  
Impact of New York State taxation change
    --       381,345  
Income tax expense
  $ 727,759     $ 497,193