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)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Cash and Cash Equivalents, Restricted Cash and Restricted Cash, noncurrent) (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2021
Dec. 31, 2020
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents        
Cash and cash equivalents $ 44,068 $ 58,286    
Restricted cash 3,985 3,480    
Restricted cash, noncurrent 216 798    
Total Cash and cash equivalents, Restricted cash and Restricted cash, noncurrent $ 48,269 $ 62,564 $ 89,583 $ 50,833