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Note 9 - Income Taxes (Tables)
3 Months Ended
Mar. 31, 2015
Notes Tables  
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
   
Three Months Ended March 31,
 
   
2015
   
2014
 
Current:
               
Federal
  $ 309,122     $ -----  
State
    7,146       -----  
Total Current Provision
    316,268       -----  
Deferred:
               
Federal
  $ 204,659     $ (161,965 )
State
    ----       381,345  
Total deferred
    204,659       219,380  
Income tax expense
  $ 520,927     $ 219,380  
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
   
Three Months Ended
 
   
March 31,
 
   
2015
   
2014
 
Income tax benefit at federal statutory rate [34%]
  $ 404,311     $ (16,581 )
Change in capitalized inventory (Section 263A)
    --       (11,080 )
Change in vacation accrual
    --       (21,608 )
Change in other accruals
    12,654       (4,674 )
Difference between tax and book depreciation
    (16,298 )     7,532  
Stock-based compensation
    (9,689 )     (61,394 )
Domestic production activities deduction     (37,145 )     --  
Research and development credits
    (276,329 )     (54,160 )
Net operating loss     443,423       --  
Impact of New York State taxation change
    --       381,345  
Income tax expense
  $ 520,927     $ 219,380