Terri Pizzuto
Analyst · those projected in these forward-looking statements. Copies of these SEC filings may be obtained by contacting the company or the SEC.
Now I would like to introduce Terri Pizzuto
Thanks, Jeremy, and thank you all for being with us today. We had a solid first quarter with 3 main themes. First, intermodal volumes were at an all-time high with Hub segment volume, up 15% and total intermodal volume, including Mode, up 31%. Second, operating income was up 22% after adjusting 2011 for onetime costs. And third, Mode's results were better than we expected.
Here are the key numbers for the first quarter. Hub Group's revenue increased 52% to $740 million. Hub Group's diluted earnings per share increased 32% to $0.37. We're proud that this was a record first quarter. 2011 diluted earnings per share, excluding onetime costs related to the Mode acquisition, were $0.31. Diluted earnings per share are up 19% when comparing to this adjusted earnings per share.
Now I'll discuss details for the quarter. As a final reminder, we report 2 distinct business segments: Hub and Mode. The Mode segment includes only the business that we acquired on April 1, 2011. The Hub segment includes all business other than Mode. When we say Hub Group, as opposed to just Hub, we're referring to the consolidated results for the whole company, including both the Mode and Hub segments.
First, I'll talk about the financial performance of the Hub segment. The Hub segment generated revenue of $563 million, which is a 16% increase over last year. Taking a closer look at Hub's business line, intermodal revenue increased 20%. This change includes a 15% volume increase and a 5% increase for fuel, price and mix.
Directionally, fuel and price were up and mix was negative. 280 basis points of this volume increase came from fleet boxes sold to Mode agents. We're excited that this was the ninth straight quarter of double-digit intermodal volume growth. We continue to see our growing customers converting straight from truck to intermodal in both transcon and local east lane.
Truck brokerage revenue was down 6% on 3% lower volumes. A lot of our volume decline results from how we fared in the bids last year. It's still early in this season this year, but we're encouraged by the results.
Logistics revenue was 23% higher than last year. Most of our growth is from existing accounts, although we did start ramping up with a few new customer. Hub's gross margin increased by $4.2 million, due primarily to significant growth in intermodal margin. Intermodal margin is up because of volume growth, price increases and our focus on doing more of our own drayage. Logistics also contributed to the margin increase. These increases were partially offset by a decline in truck brokerage gross margin.
Hub's gross margin, as a percentage of sales, was 10.9%. The good news is that margin is up 30 basis points compared to the 10.6% margin in the fourth quarter of 2011. However, margin is down 90 basis points compared to last year's 11.8% margin.
There are a few reasons why the margin percentage is down from last year. Number one, intermodal yield is down about 95 basis points since we had higher-than-anticipated cost increases from certain key carriers; and number two, logistics margin is down 75 basis points since we're doing more transactional as opposed to management fee business.
Hub's costs and expenses increased $1.1 million from $40.5 million in the first quarter of 2011 to $41.6 million in the first quarter of 2012. We had a $2.3 million increase in salaries and benefits that was partially offset by a $1.3 million decline in general and administrative expense. Salaries were up $1.4 million and restricted stock and bonus combined increased $900,000. In 2011, we had $1.7 million of onetime costs that were included in general and administrative expense related to the Mode acquisition. Finally, operating income for the Hub segment increased $3.2 million or 19%.
Now I'll talk about our Mode segment. Mode's revenue was $187 million. That revenue breaks down as $82 million in intermodal, $80 million in truck brokerage and $25 million in logistics. Compared to last year, revenue at Mode was up 10%. Mode's gross margin was $22.2 million. Gross margin, as a percentage of sales, was 11.9%. Mode's total costs and expenses were $19.7 million. Operating margin for Mode was 1.4%.
Turning to headcount. We had 1,356 employees, excluding drivers, at the end of March. That's only up 7 people compared to year end.
Now I'll discuss 2012 full year earnings guidance. For 2012, we're comfortable that our diluted earnings per share will be within the current analyst range of between $1.89 and $2.10. Our weighted average diluted shares this year are estimated to be 37,200,000. We think that our quarterly costs and expenses, including Mode Transportation, will range between $62 million and $65 million for the rest of 2012.
Turning now to our balance sheet and how we used our cash. We ended the quarter with $53 million in cash and no debt. During the quarter, we spent $17 million on capital expenditures. $10 million was for land for our new corporate headquarters, $2 million was for containers, $1 million was for our building addition in Memphis, and most of the remainder was for technology investments. We think that we'll spend between $60 million and $70 million on capital expenditures in 2012. Between $20 million and $30 million is for our new corporate headquarters, which is a 2-year project; $25 million is for containers, and the rest is for technology investments.
To wrap it up for the financial section, the 22% increase in operating income and record earnings per share are a great start to the year.
And now, you'll hear from our CEO, Dave Yeager.