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Quarterly Financial Data - Unaudited (Tables)
12 Months Ended
Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]  
Quarterly Financial Data - Unaudited
The following tables present certain unaudited consolidated quarterly financial information for each of the past eight quarters ended December 31, 2019 and 2018. This quarterly information has been prepared on the same basis as the Consolidated Financial Statements and includes all adjustments necessary to state fairly the information for the periods presented.
 
   
Fiscal Year Ended December 31, 2019
 
   
Quarter Ending
 
   
March 31
   
June 30
   
September 30
  
December 31
 
Revenue - net
  $794,927   $774,436   $762,175  $741,449 
Gross profit
   794,927    774,436    762,175   741,449 
Net income (loss)
   (1,167,886   (2,774,282   (4,229,833  (2,267,960
Basic and diluted net income per share
  $(0.13  $(0.30  $(0.45 $(0.24
   
Fiscal Year Ended December 31, 2018
 
   
Quarter Ending
 
   
March 31
   
June 30
   
September 30
  
December 31
 
Revenue - net
  $511,735   $1,073,479   $886,327  $804,212 
Gross profit
   511,735    1,073,479    886,327   804,212 
Net income (loss)
   (1,744,762   (641,557   (1,309,275  (1,476,842
Basic and diluted net income per share
  $(0.21  $(0.08  $(0.15 $(0.16