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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

6 Months Ended

Jun. 30, 2021

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Schedule of restricted cash and cash equivalents

​

​	​	​	​	​	​	​	​
​	​	June 30,		​	December 31,		​
​		2021			2020
Cash and cash equivalents		$	116,280		$	143,872	​
Restricted cash - current	​	​	44,606	​	​	35,492	​
Restricted cash - noncurrent	​		315	​		315	​
​	​	​	​	​	​	​	​
Cash, cash equivalents and restricted cash		$	161,201		$	179,679	​
​	​	​	​	​	​	​	​

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Tabular disclosure of supplemental cash flow information for the periods presented.

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