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Fair Value Measurements - Summary of Notes Payable (Details) - USD ($) | Jun. 30, 2019 | Dec. 31, 2018
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Related Parties [Member] |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Notes Payable, Fair Value |  | $ 1,470,088 | $ 1,384,195
2016 Unrelated Notes [Member] |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Notes Payable, Fair Value | [1] | 1,034,841 | 1,000,261
2017 Unrelated Notes [Member] |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Notes Payable, Fair Value | [1] | 2,279,653 | 2,275,686
2018 Unrelated Notes [Member] |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Notes Payable, Fair Value | [2] | 1,165,732 | 900,000
Unrelated Notes [Member] |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Notes Payable, Fair Value |  | 4,480,225 | 4,175,947
Shealy Note [Member] |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Notes Payable, Fair Value | [3] | 24,014 | 46,807
2016 Related Notes [Member] |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Notes Payable, Fair Value | [1] | 446,835 | 433,117
2017 Related Notes [Member] |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Notes Payable, Fair Value | [1] | 505,150 | 504,271
2018 Related Notes [Member] |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Notes Payable, Fair Value | [2] | $ 518,103 | $ 400,000
[1] | The fair value was based upon Level 2 inputs. See Note 8 for additional information about the Company's 2016 and 2017 Unrelated Notes. See Note 9 for additional information about the Company's 2016 and 2017 Related Notes.
[2] | The fair value was based upon Level 2 inputs as of June 30, 2019. The 2018 Unrelated and Related Notes were closed in September 2018 between market participants, therefore, given proximity of the transactions to year-end, fair value approximated carrying value at December 31, 2018. See Note 8 for additional information about the Company's 2018 Unrelated Notes. See Note 9 for additional information about the Company's 2018 Related Notes.
[3] | The fair value was based upon Level 2 inputs. Short term maturity and interest rate approximates rate that the Company realized with issuance of new debt in September 2018; therefore, carrying value approximates fair value. See Note 9 for additional information about the Company's $250,000 Shealy Note.

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- Definition Fair value portion of notes payable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20,22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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