Fredric Zinn
Analyst · CJS Securities
Thank you, Jeff, and thank you, all, for joining us on the call today. I just want to mention that Leigh Abrams, Chairman of Drew, who's typically on this call, is stuck in an airport, unfortunately, so he won't be joining us today. I also want to thank all of you for your patience with us about the hurricane-related delay in issuing our press release and in holding this conference call. I certainly hope that all of you and your families who were in the path of this Hurricane Sandy came through that ordeal safely and securely. Luckily, our operations and the vast majority of our employees, except a handful here in our New York office, were not significantly impacted by the terrible storm.
Turning to our results. We are delighted with the continuing strength in the demand for our products, especially in the -- our RV products, in the RV segment, and we're pleased that we have begun to see improved production efficiencies hitting our numbers. Earlier this year, Jason Lippert and his team intensified their efforts to develop and implement action plans to increase efficiencies, and now we've begun to see the results. We still have a way to go, and that's in part because customer demand and, therefore, our production levels has remained very high.
For the first 9 months of 2012, our sales increased an unprecedented $180 million and they continue to be strong into the fourth quarter. We're also making progress now improving our production efficiencies, and we're confident that these improvements will continue as we prepare for the 2013 peak selling season.
In the third quarter of 2012, our year-over-year incremental EBIT margin was nearly 10%, and we expect our fourth quarter year-over-year incremental margin to exceed 10%. And that's despite the fact that we'll be incurring some ongoing costs related to our facility reconfiguration and other process improvements that are being implemented. We expect those initiatives to further increase our production efficiencies in 2013 and beyond.
We're also encouraged by the solid industry expansion over the past year in both the RV and manufactured housing industries and by the optimism that many industry participants continue to express from our customers, to analysts and lenders. We're -- but just as importantly, we're pleased with the exceptional gains we've achieved in our content, both towable and motorhome RVs. Our sales gains in adjacent markets have also kept pace with the high level of growth we've experienced in our core markets. We're growing not only because of industry expansion, we have achieved and we continue to expect solid growth in new products and in new markets as well.
On the other hand, we won't see growth unless it's accompanied by solid long-term returns. We're committed to continuing our track record of generating favorable returns on invested capital. And in that regard, Drew's return on equity increased to 12.5% for the 12 months ended September 2012. We're not back to the ROE of more than 15% that we achieved before the recession, but we have made progress and we continue to do so.
Further, through enhanced asset management, we've improved inventory turns and increased our return on assets. Excluding cash balances, which yields are negligible, as you know, our pro forma return on assets was nearly 10% for the 12 months ended September 2012, and that's up from about 9% in the year-earlier period.
Solid returns on investment lead to strong cash flow and to a healthy balance sheet, and we have maintained a healthy balance sheet, strong cash flow through both the recession and the early stages of the economic recovery. Our plans to increase production capacity in response to increased demand have been designed to balance the objectives of continuing growth and the increasing returns on equity and on assets. To accomplish both of those objectives, our first priority must be to deliver quality products and provide top-notch service to our customers. That's really what's enabled us to grow and prosper over the years, and we will continue to invest money and people in those capabilities.
At the same time, we will seek to control costs while maintaining flexibility in production levels and capacity. Drew's long-established policy of using our executive compensation plans to reward both profit, growth and return on investment rather than sales growth motivates management to optimize our use of assets and avoid excess fixed costs.
In evaluating our performance so far this year, it is noteworthy that our results for the first 9 months of 2012 exceeded results for the full year of 2011. Our sales through September 2012 of more than $700 million exceeded full year 2011 sales by nearly $20 million. Our net income for the 9 months was $32.6 million, $2.5 million more than we achieved in all of 2011. To have achieved those results despite weak economic growth and high unemployment in the U.S. is very gratifying to us.
Because of our strong profits and solid cash flow, we ended the third quarter with $33 million in cash and significant unused credit lines. In that regard, in the coming months, our board will continue to consider potential uses of the cash in the context of our continuing needs for growth capital, such as acquisitions and internal growth, and our objective to deliver shareholder value. In the coming months, we'll continue to update you on our progress towards each of our primary long-term goals, including growth in our core markets, diversification into adjacent markets and improvements in our production efficiencies and cost structure.
Now I'll ask Joe to review our results in some more detail.