Quarterly report pursuant to Section 13 or 15(d)

Restricted Cash - Reconciliation (Details)

v3.10.0.1
Restricted Cash - Reconciliation (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Sep. 30, 2017
Dec. 31, 2016
Reconciliation of cash, cash equivalents, and restricted cash        
Cash and cash equivalents $ 43,524 $ 32,205 $ 42,149 $ 58,588
Restricted cash, current portion 638 193 193  
Restricted cash, long-term 290 290 290 483
Total cash, cash equivalents and restricted cash $ 44,452 $ 32,688 $ 42,632 $ 59,071