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Summary of Significant Accounting Policies - Schedule of Changes in Contract Assets and Liabilities (Details) - USD ($) | 6 Months Ended
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Jun. 30, 2019 | Jun. 30, 2018
Accounting Policies [Abstract] |  |
Unbilled receivables, balance at beginning of period | $ 65,118 | $ 89,847
Unbilled receivables, revenue recognized in advance of billings | 98,154 | 147,126
Unbilled receivables, billings | (117,965) | (168,436)
Unbilled receivables, balance at end of period | 45,307 | 68,537
Deferred revenue, balance at beginning of period | 723,619 | 708,130
Deferred revenue, billings | 1,355,267 | 1,294,906
Deferred revenue, recognized revenue | (1,490,916) | (1,395,045)
Deferred revenue, balance at end of period | $ 587,970 | $ 607,991

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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130532-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045 + Details
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