Amount of amortization expense attributable to debt discount (premium) and debt issuance costs.

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The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

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The amount of the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Date the debt instrument was issued, in CCYY-MM-DD format.

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Date the debt instrument was offered for sale, in CCYY-MM-DD format.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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The cash inflow from a borrowing supported by a written promise to pay an obligation.

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Notes Payable - Additional Information (Detail) - USD ($)			1 Months Ended	3 Months Ended		9 Months Ended
	May 04, 2017	Mar. 09, 2017	Aug. 31, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Feb. 28, 2017	Jan. 18, 2017
Debt Instrument [Line Items]
Warrants issued on debt issuance			2,345,427	2,345,427	134,499	2,395,203	403,498
Debt Instrument, unamortized discount						$ 98,060	$ 1,950,159
Debt conversion, converted instrument, amount						$ 3,645,424
Notes Payable [Member]
Debt Instrument [Line Items]
Debt instrument, issuance date						Jan. 18, 2017
Debt instrument, interest rate, stated percentage									6.00%
Debt instrument, offering date						Feb. 28, 2017
Gain (loss) on extinguishment of debt						$ 0
Gross proceeds from notes payable		$ 3,150,630
Debt Instrument, unamortized discount		$ 566,793
Debt conversion, converted instrument, amount	$ 3,645,424
Debt conversion, shares converted	316,734
Interest expense, debt				$ 83,207		$ 136,629
Notes Payable [Member] \| Common Stock Class A [Member]
Debt Instrument [Line Items]
Warrants issued on debt issuance		49,776
Notes Payable [Member] \| Prior Note Payable [Member]
Debt Instrument [Line Items]
Debt instrument, face amount								$ 196,496
Notes Payable [Member] \| Accrued Expenses [Member]
Debt Instrument [Line Items]
Debt instrument, face amount								$ 881,044