Debt and Other Financing Arrangements - Schedule of Debt (Detail) - USD ($) |
Jun. 30, 2019 |
Dec. 31, 2018 |
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| Debt Instrument [Line Items] | ||
| Notes payable | $ 4,122,575 | $ 42,875 |
| Financing agreement with FlatIron capital maturing in May 31, 2019 [Member] | ||
| Debt Instrument [Line Items] | ||
| Notes payable | $ 42,875 | |
| Convertible Senior Note [Member] | ||
| Debt Instrument [Line Items] | ||
| Notes payable | 3,461,782 | |
| Promissory note issued by a financial institution [Member] | ||
| Debt Instrument [Line Items] | ||
| Notes payable | $ 660,793 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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