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Commitments and Contingencies (Tables)
 9 Months Ended
Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]  
Components lease costs
The Company's operating lease costs are as follows:
Three Months Ended September 30,Nine Months Ended September 30,
2021202020212020
Operating lease cost$843 $877 $2,581 $2,645 
Variable lease cost65 112 135 336 
Short-term lease cost237 71 368 206 
Total lease cost$1,145 $1,060 $3,084 $3,187 
The weighted average remaining operating lease term and the weighted average discount rate used in the calculation of the Company's lease assets and lease liabilities were as follows:
September 30,
2021		December 31,
2020
Weighted average remaining operating lease term (in years)4.35.1
Weighted average discount rate7.7%7.7%
Supplemental cash flow information related to the Company's operating leases was as follows:
Three Months Ended September 30,Nine Months Ended September 30,
2021202020212020
Cash paid for operating lease liabilities$1,007 $900 $3,072 $2,699 
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities$— $— $— $192 
Future minimum lease payments
Maturities of operating lease liabilities by year are as follows as of September 30, 2021:
Remainder of 2021$1,012
20224,112
20234,239
20244,472
20254,599
Thereafter780
Total lease payments19,214
Less imputed interest(3,061)
Total operating lease liabilities$16,153