Dollar Thrifty reported a $33.9 million fourth-quarter net profit, up from $12.5 million for the last three months of 2010.

Despite a 4 percent year-over-year decrease in per-day rental revenue, revenues increased 1 percent during the quarter, thanks to a 5 percent increase in rental days. CEO Scott Thompson this week during the company's earnings call said he expected the "rental rate environment to improve in the first quarter of 2012 versus the fourth quarter of 2011," though he still expected a year-over-year decline in per-day rental revenue during the first three months of the year. Still, the company expects full-year rental revenues in 2012 to grow by up to 5 percent.