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Cash and Cash Equivalents (Tables)
 12 Months Ended
Dec. 31, 2019
CASH AND CASH EQUIVALENTS [Abstract]  
Cash and cash equivalents

 

December 31,
2019

 

December 31,
2018

 

Cash and cash equivalents

$23,354 

$58,590 

Restricted cash

7,048 

2,865 

 

 

 

Total cash and cash equivalents and restricted cash

$30,402 

$61,455