Annual report pursuant to Section 13 and 15(d)

Borrowing Arrangements - Schedule of Required Future Principal Payments (Detail)

v3.19.1
Borrowing Arrangements - Schedule of Required Future Principal Payments (Detail) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Debt Instrument [Line Items]    
Total $ 3,300 $ 3,500
Perceptive Credit Facility    
Debt Instrument [Line Items]    
2019 0  
2020 800  
2021 800  
2022 3,500  
2023 0  
Total 5,100  
Debt discount and deferred finance costs (1,846)  
Total $ 3,254