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Other Assets
 12 Months Ended
Dec. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Other Assets OTHER ASSETS
Prepaid expenses and other current assets consist of the following at December 31:
20212020
Commodity derivatives and related collateral, net$9,651 $5,433 
Prepaid expenses25,537 27,933 
Deposits1,830 2,047 
RIN inventory5,741 869 
Taxes receivable43,735 29,621 
Other6,949 1,754 
Total$93,443 $67,657 
RIN inventory is valued at the lower of cost or net realizable value and consists of (i) RINs the Company generates in connection with its production of bio-based diesel and (ii) RINs acquired from third parties. RINs generated by the Company are recorded at no cost, as these RINs are government incentives and not a tangible output from its bio-based diesel production. The cost of RINs acquired from third parties is determined using the average cost method. RIN market value is based upon pricing as reported by the OPIS. Since RINs generated by the Company have zero cost associated to them, the lower of cost or market adjustment in RIN inventory reflects only the value of RINs obtained from third parties. There were no lower of cost or market adjustments made to RIN inventory values reported at December 31, 2021 or 2020.
Other noncurrent assets consist of the following at December 31:
20212020
Investments$15,724 $13,005 
Spare parts inventory2,756 2,610 
Catalysts14,985 7,408 
Deposits357 451 
Long term notes receivable11,259 542 
Other15,801 8,704 
Total$60,882 $32,720