6. Financial Derivative Instruments

The Company makes limited use of derivative instruments (futures contracts) to manage certain risks related to diesel fuel prices. The Company does not hold any derivatives for speculative purposes and it does not use derivatives with leveraged or complex features. The Company currently uses derivative instruments that are traded primarily over national exchanges such as the New York Mercantile Exchange (“NYMEX”). For accounting purposes, the Company has designated its derivative contracts as fair value hedges of firm commitments.

As of March 31, 2023, the Company had fuel futures contracts in place to hedge approximately 2.2 million gallons of diesel fuel for which the Company had a firm commitment to purchase. As of March 31, 2023 and December 31, 2022, the Company had asset derivatives with fair values of approximately $0.03 million and $0.5 million, respectively, recorded in other current assets and firm commitments with fair values of approximately $0.03 million and $0.5 million, respectively, recorded in other current liabilities on the condensed consolidated balance sheets.

As of December 31, 2022, there was $0.5 million of cash collateral provided to counterparties that was classified as restricted cash on the condensed consolidated balance sheet. There was no cash collateral provided to counterparties as of March 31, 2023. All cash flows associated with purchasing and selling fuel derivative instruments are classified as other operating activities, net cash flows in the condensed consolidated statements of cash flows.