Quarterly report pursuant to Section 13 or 15(d)

Debt and Other Financing Arrangements - Schedule of Debt (Parenthetical) (Detail)

v3.19.2
Debt and Other Financing Arrangements - Schedule of Debt (Parenthetical) (Detail)
6 Months Ended
Jun. 30, 2019
USD ($)
shares
Financing agreement with FlatIron capital maturing in May 31, 2019 [Member]  
Debt Instrument [Line Items]  
Down payment for note payable $ 28,125
Debt instrument, periodic payment $ 8,701
Debt instrument due period 10 months
Debt instrument, maturity date May 31, 2019
Debt instrument, interest rate percentage 5.99%
Convertible Senior Note [Member]  
Debt Instrument [Line Items]  
Debt instrument, maturity date Jan. 14, 2019
Debt instrument, interest rate percentage 3.00%
Debt instrument, issuance date Jan. 16, 2019
Debt instrument, to be converted shares | shares 1,436,424
Debt instrument, convertible, beneficial conversion feature $ 0
Promissory Notes [Member]  
Debt Instrument [Line Items]  
Debt instrument, periodic payment $ 10,932
Debt instrument, maturity date May 30, 2025
Debt instrument, interest rate percentage 5.85%
Debt instrument, issuance date May 31, 2018
Principal amount $ 608,000
Subsequent borrowings 141,000
Repayments $ 51,000