Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - Interest Expense and Amortization of Debt Issuance Costs (Details)

v3.19.2
Long-Term Debt - Interest Expense and Amortization of Debt Issuance Costs (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Interest expense and amortization of debt issuance costs [Abstract]        
Interest expense $ 423 $ 178 $ 852 $ 348
SVB Loans [Member]        
Interest expense and amortization of debt issuance costs [Abstract]        
Interest expense 236 12 477 12
Novartis Note [Member]        
Interest expense and amortization of debt issuance costs [Abstract]        
Interest expense 186 144 372 283
Other [Member]        
Interest expense and amortization of debt issuance costs [Abstract]        
Interest expense $ 1 $ 22 $ 3 $ 53