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Restricted Cash (Tables)
12 Months Ended
Dec. 31, 2020
Receivables [Abstract]  
Schedule of Reconciliation of Cash, Cash Equivalents and Restricted Cash

The following table provides a reconciliation of cash, cash equivalents and restricted cash reported within the Balance Sheets that sum to the total of the same such amounts shown in the Statements of Cash Flows.

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December 31, 2020

    

December 31, 2019

Cash and cash equivalents

​

$

31,683

​

$

18,305

Restricted cash, long-term assets

​

 

408

​

 

408

Total cash, cash equivalents, and restricted cash shown in the Statements of Cash

Flows

​

$

32,091

​

$

18,713