Quarterly report pursuant to Section 13 or 15(d)

Restricted Cash - Reconciliation (Details)

v3.19.3
Restricted Cash - Reconciliation (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Sep. 30, 2018
Dec. 31, 2017
Cash And Cash Equivalents [Abstract]        
Cash and cash equivalents $ 33,364 $ 49,886 $ 43,524 $ 32,205
Restricted cash, current portion 638 638 638 193
Restricted cash, net of current portion 3,376 290 290 290
Total cash, cash equivalents and restricted cash $ 37,378 $ 50,814 $ 44,452 $ 32,688