Subsequent Events (Details) - Endoceutics License Agreement - Subsequent Event	Apr. 03, 2017 USD ($) country shares
Subsequent Event [Line Items]
Upfront payment	$ 50,000,000
Stock issued under arrangement (in shares) | shares	600,000
Period after first commercial sale (in years)	10 years
Notice period (in days)	90 days
Breach curing period (in days)	90 days
Dispute resolution period (in days)	30 days
Research and Development Arrangement
Subsequent Event [Line Items]
Out-of-pocket expenses (up to)	$ 20,000,000
Inventories
Subsequent Event [Line Items]
Supplier period (in years)	2 years
180 Day Lock-Up Provision
Subsequent Event [Line Items]
Stock issued under arrangement (in shares) | shares	300,000
Stock issued, lock-up period	180 days
One Year Lock-Up Provision
Subsequent Event [Line Items]
Stock issued under arrangement (in shares) | shares	300,000
Stock issued, lock-up period	1 year
Anniversary of Closing
Subsequent Event [Line Items]
Future contingent payments	$ 10,000,000
Delivery of Launch Quantities
Subsequent Event [Line Items]
Future contingent payments	10,000,000.0
Tiered Royalties
Subsequent Event [Line Items]
Future contingent payments	150,000,000
Net sales threshold	$ 1,000,000,000
Maximum | Tiered Royalties
Subsequent Event [Line Items]
Royalty percentage (as a percent)	20.00%
Endoceutics, Inc. | First Sales Milestone
Subsequent Event [Line Items]
Sales milestone	$ 15,000,000.0
First sales milestone triggering amount	150,000,000.0
Endoceutics, Inc. | Second Sales Milestone
Subsequent Event [Line Items]
Sales milestone	30,000,000.0
First sales milestone triggering amount	300,000,000
Endoceutics, Inc. | Third Sales Milestone
Subsequent Event [Line Items]
Sales milestone	850,000,000
First sales milestone triggering amount	$ 500,000,000
Valid Business Reason
Subsequent Event [Line Items]
Termination period (in days)	365 days
Product Safety Issue
Subsequent Event [Line Items]
Termination period (in days)	60 days
Change In Control
Subsequent Event [Line Items]
Termination period (in days)	180 days
Change In Control | European Union
Subsequent Event [Line Items]
Number of contracts competing | country	3