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Cash and Cash Equivalents
6 Months Ended
Jun. 30, 2021
Cash and Cash Equivalents [Abstract]  
Cash and Cash Equivalents
3. Cash and Cash Equivalents
Substantially all of the Company’s cash and cash equivalents was held at three financial institutions on June 30, 2021. Cash equivalents were approximately
 $81,536 and $660 
at June 30, 2021 and December 31, 2020, respectively. 
Certain of the Company’s international subsidiaries are required to maintain a minimum level of regulatory capital, which was
 $12,439 and $10,745
at June 30, 2021 and December 31, 2020, respectively. These requirements are generally satisfied by cash on hand.
In addition, the Company collateralized its U.S. office lease through a standby letter of credit totaling $1,384 which is restricted from further use.