For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Amount of receivables owed to an entity that is affiliated with the reporting entity by means of direct or indirect ownership, which are usually due after one year (or one business cycle, if longer).

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Related Party Transactions - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Director and Shareholder [Member] \| Patent Rights from Director and Shareholder [Member]
Related Party Transaction [Line Items]
Royalty expense	$ 16,000	$ 11,000	$ 37,000	$ 23,000
Director and Shareholder [Member] \| Patent Rights from Director and Shareholder [Member] \| Royalty Expenses [Member]
Related Party Transaction [Line Items]
Royalty expense as a percentage of net sales			3.00%
Beneficial Customer [Member] \| Sales [Member]
Related Party Transaction [Line Items]
Revenue from related parties	200,000		$ 500,000	100,000
Director and the Chairman [Member] \| Consulting Agreement [Member] \| Selling, General and Administrative Expenses [Member]
Related Party Transaction [Line Items]
Consulting fees incurred for related party	47,000,000	74,000,000	100,000	200,000
Officer [Member] \| Consulting Agreement [Member] \| Selling, General and Administrative Expenses [Member]
Related Party Transaction [Line Items]
Consulting fees incurred for related party		94,000,000	200
Current Director and Officer [Member] \| Consulting Agreement [Member] \| Selling, General and Administrative Expenses [Member]
Related Party Transaction [Line Items]
Consulting fees incurred for related party		100,000		200,000
Orbimed Royalty Oppurtunities Two LP and Deerfield Private Design Fund LP [Member] \| 2019 Credit Agreement [Member]
Related Party Transaction [Line Items]
Line of credit maximum borrowing capacity					$ 70,000,000.0
Line of credit cumulative drawdowns till date	40,000,000.0		40,000,000.0
Interest expenses related party	$ 1,300,000	$ 600,000	$ 2,700,000	$ 600,000