Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Cash and Cash Equivalents, Restricted Cash and Restricted Cash, noncurrent) (Details)

v3.21.2
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Cash and Cash Equivalents, Restricted Cash and Restricted Cash, noncurrent) (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Jun. 30, 2020
Dec. 31, 2019
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents        
Cash and cash equivalents $ 81,428 $ 47,786 $ 12,638 $ 28,423
Restricted cash 2,990 2,252 2,974 3,103
Restricted cash, noncurrent 1,027 795 267 438
Total Cash and cash equivalents, Restricted cash and Restricted cash, noncurrent $ 85,445 $ 50,833 $ 15,879 $ 31,964