Commercial Services Agreement - Additional Information (Detail)	Jan. 05, 2019 USD ($)
NGP Credit Agreement [Member]
Commercial Services Agreement [Line Items]
Line of credit	$ 5,000,000
Third-Party Wholesale Distributor [Member] | NGP Credit Agreement [Member]
Commercial Services Agreement [Line Items]
Minimum financing arrangements from purchase order not to avail line of credit.	$ 2,500,000
NGP Agreement [Member]
Commercial Services Agreement [Line Items]
Term of agreement	5 years
Recapture percentage of product sales after agreement term	100.00%
Minimum termination fee	$ 5,000,000
Agreement termination fee description	The Company may terminate the NGP Agreement upon a change of control of the Company, subject to a one-time payment equal to between four times and one times annualized service fees paid by the Company under the NGP Agreement, with such amount based on which year (between one and five years) after commercial launch the change of control occurs, provided if the change of control occurs within one year of commercial launch, such amount will be the greater of the specified annualized service fee amount and $5 million.
NGP Agreement [Member] | Gimoti [Member] | Minimum [Member]
Commercial Services Agreement [Line Items]
Percentage of product profits	80.00%