Revenue Recognition (Details) $ in Millions	3 Months Ended
Mar. 31, 2019 USD ($) distributor
Disaggregation of Revenue [Line Items]
Percentage of coverage for lives obtained under commercial plans	90.00%
Percentage of coverage for lives obtained under medicare plans	75.00%
Provisions for revenue reserves to reduce product revenues to product revenues, net \| $	$ 16.2
Customer Concentration Risk \| Sales Revenue, Net \| Rhopressa
Disaggregation of Revenue [Line Items]
Number of distributors \| distributor	3
Customer Concentration Risk \| Sales Revenue, Net \| Rhopressa \| Distributor One
Disaggregation of Revenue [Line Items]
Concentration risk percentage	36.00%
Customer Concentration Risk \| Sales Revenue, Net \| Rhopressa \| Distributor Two
Disaggregation of Revenue [Line Items]
Concentration risk percentage	34.00%
Customer Concentration Risk \| Sales Revenue, Net \| Rhopressa \| Distributor Three
Disaggregation of Revenue [Line Items]
Concentration risk percentage	27.00%

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Percentage Of Coverage For Lives Obtained Under Medicare Plans

+ References

No definition available.

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Provisions For Revenue Reserves To Reduce Product Revenues To Product Revenues, Net

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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