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Restricted Cash
9 Months Ended
Sep. 30, 2021
Cash and Cash Equivalents [Abstract]  
Restricted Cash Restricted Cash
The following table provides the components of Restricted cash (dollars in thousands):
September 30,
2021
December 31,
2020
Reclamation and other surety bond cash collateral$34,293 $39,677 
As of September 30, 2021, the Company's BLM reclamation and similar obligations were secured with surety bonds totaling $59.3 million, which were partially collateralized by the Restricted cash shown above. During the nine months ended September 30, 2021 the Company replaced certain surety bonds with new surety bonds with lower cash collateral requirements, resulting in an approximate $5.4 million reduction in restricted cash.