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Accounting Policies - Percentage of Net Product Sales and Accounts Receivable Balance (Details) - Customer Concentration Risk	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021
Revenue Benchmark | Largest Customer
Product Information [Line Items]
Concentration risk percentage	41.40%	46.40%
Revenue Benchmark | Second Largest Customer
Product Information [Line Items]
Concentration risk percentage	37.60%	33.70%
Revenue Benchmark | Third Largest Customer
Product Information [Line Items]
Concentration risk percentage	19.40%	18.80%
Revenue Benchmark | Top Three Customers
Product Information [Line Items]
Concentration risk percentage	98.40%	98.90%
Accounts Receivable | Largest Customer
Product Information [Line Items]
Concentration risk percentage		40.30%
Accounts Receivable | Second Largest Customer
Product Information [Line Items]
Concentration risk percentage		46.60%
Accounts Receivable | Third Largest Customer
Product Information [Line Items]
Concentration risk percentage		12.00%
Accounts Receivable | Top Three Customers
Product Information [Line Items]
Concentration risk percentage		98.90%

X

- Definition

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.

+ References

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