The company's quarterly results highlight the resilience of the business.The trucking recession isn't over, but Old Dominion Freight Line (ODFL -4.65%) provided a reminder last month that it is a best-in-class operator able to navigate through the slowdown.Shares of Old Dominion climbed 19% in July, according to data provided by S&P Global Market Intelligence, after the company generated a better-than-expected second-quarter profit.Cost controls drive an earnings beatIt has been a tough year for trucking co ...