Annual report pursuant to Section 13 and 15(d)

Restricted Cash - Schedule of Reconciliation of Cash, Cash Equivalents, and Restricted Cash (Details)

v3.20.4
Restricted Cash - Schedule of Reconciliation of Cash, Cash Equivalents, and Restricted Cash (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents [Abstract]        
Cash and cash equivalents $ 173,984 $ 41,441 $ 49,886 $ 32,205
Restricted cash, current portion   290 638 193
Restricted cash, net of current portion 3,086 3,086 290 290
Total cash, cash equivalents and restricted cash $ 177,070 $ 44,817 $ 50,814 $ 32,688