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Cash, Cash Equivalents and Restricted Cash (Tables)
9 Months Ended
Sep. 30, 2021
Cash And Cash Equivalents [Abstract]  
Schedule of Cash, Cash Equivalents, and Restricted Cash

Cash, cash equivalents, and restricted cash balances were as follows:

 

 

 

September 30,

 

 

December 31,

 

 

 

 

2021

 

 

 

2020

 

Cash and cash equivalents

 

$

24,865

 

 

$

28,575

 

Restricted balance for loan agreement

 

 

4,000

 

 

 

 

Letters of credit

 

 

101

 

 

 

131

 

Security for credit cards

 

 

50

 

 

 

50

 

Total cash, cash equivalents and restricted cash shown in

   the statements of cash flows

 

$

29,016

 

 

$

28,756