Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Schedule of Reconciliation of Cash and Cash Equivalents, and Restricted Cash (Details)

v3.10.0.1
Summary of Significant Accounting Policies - Schedule of Reconciliation of Cash and Cash Equivalents, and Restricted Cash (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Sep. 30, 2017
Accounting Policies [Abstract]      
Cash and cash equivalents $ 41,353 $ 22,020 $ 25,407
Restricted cash 15 $ 15 15
Total cash, cash equivalents, and restricted cash shown in the statements of cash flows $ 41,368   $ 25,422