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Summary of Significant Accounting Policies (Tables)
 6 Months Ended
Jun. 30, 2019
Accounting Policies [Abstract]  
Schedule of Changes in Contract Assets and Liabilities

The following table present changes in our contract assets and liabilities during the six months ended June 30, 2019 and 2018:

 

   Balance at Beginning of Period   Revenue Recognized in Advance of Billings   Billings   Balance at
End of Period		 
Six months ended June 30, 2019                    
Contract assets: Unbilled receivables  $65,118   $98,154   $(117,965)  $45,307 
                     
Six months ended June 30, 2018                    
Contract assets: Unbilled receivables  $89,847   $147,126   $(168,436)  $68,537 

 

   Balance at Beginning of Period   Billings   Recognized Revenue   Balance at
End of Period		 
Six months ended June 30, 2019                    
Contract liabilities: Deferred revenue  $723,619   $1,355,267   $(1,490,916)  $587,970 
                     
Six months ended June 30, 2018                    
Contract liabilities: Deferred revenue  $708,130   $1,294,906   $(1,395,045)  $607,991