• Filing Date: 2020-11-03
  • Form Type: 10-Q
  • Description: Quarterly report
v3.20.2
License Agreements (Narrative) (Details) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended
Dec. 12, 2018
Jul. 01, 2017
Mar. 31, 2019
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Aug. 01, 2017
pSivida                
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                
Collaborative arrangement, royalty payable on net revenue, percentage 6.00% 2.00%            
Collaborative arrangement, royalty payable on net revenue over threshold, percentage           2.00%    
Collaborative arrangement, royalty payable on net revenue, revenue threshold           $ 75,000,000    
Collaborative arrangement, forgiveness of future offset, additional amount     $ 5,000,000          
pSivida | Maximum                
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                
Recoverable amount to offset future royalty payments       $ 8,117,000   8,117,000   $ 15,000,000
New Collaboration Agreement, 2017 Second Amended                
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]                
Royalty expense       499,000 $ 514,000 1,481,000 $ 1,464,000  
Accrued royalty expense       $ 499,000   $ 499,000