An oil refining company enters into 1,000 long one-month crude oil futures contracts on NYMEX at a futures price of $43 per barrel. At maturity of the contract, the company rolls half its position forward into new one-month futures and closes the remaining half. At this point, the spot price of oil is $44 per barrel, and the new one-month futures price is $43.50 per barrel. At maturity of this second contract, the company closes out its remaining position. Assume the spot price is $46 per barrel. Ignoring interest, what are the companys gains or losses from its futures positions?