Thank you, Melissa. Good morning, everyone, and welcome to our conference call for the first quarter fiscal 2013. We appreciate your participation. Joining me this morning is Ms. Karel Czanderna, our President and Chief Executive Officer. We may make forward-looking statements during this call. While these statements reflect our best judgment at the present time, they are subject to risk and uncertainties as we've described in our SEC filings. Accordingly, our actual results may differ materially from our current expectations. We undertake no obligation to update any forward-looking statements made during this call.
I will now highlight some items from our first quarter. Net sales for the quarter ended September 30, 2012, were $91 million, 12% higher than the prior year quarter. Our Residential net sales increased 16% to $72 million, an increase of $10 million from the prior year quarter net sales of $63 million. Commercial net sales were $19 million, basically flat with the prior year quarter. Net income for the quarter was $2.9 million, $0.40 per diluted share, a record for a first fiscal quarter. The prior year quarter net income was $2.4 million, $0.34 per diluted share for the quarter.
Our balance sheet remained strong. Working capital is $103 million, and we have no bank borrowings. Our investment in inventory increased approximately $3 million from the June 30, 2012. The increased inventory supports our increasing Residential volume, including the expanded product offerings. Our accounts receivable increased $2 million, primarily related to just the timing of collection.
Our core strategy includes offering a wide range of quality products to the markets that we serve, combined with a conservative approach to business. To ensure that we continue to meet this core strategy, during this first fiscal quarter, we've invested $4 million in capital assets of the estimated $6 million that we expect for fiscal year 2013. Our investments include -- we completed and relocated to a new $11.8 million corporate office building. This building is a foundation for our future growth.
When compared to our previous home of some 75 years, the new corporate headquarters will have reduced operating and maintenance costs, provide for technology and infrastructure to support our customers, improve our ability to attract talent and provide a quality working environment for our employees. We relocated our Juarez operation and added $200,000 of equipment to a 225,000-square-foot leased facility, allowing for expansion of our starting price point product offerings.
In our other facilities, we invested $700,000 in manufacturing equipment to expand our product offerings, increase manufacturing capabilities and enhance productivity. As in prior years, we invested $900,000 to update a portion of our delivery fleet to maintain and improve fuel efficiency and control maintenance costs.
With that, I will turn the call over to Karel for her comments on the quarter and our business review. Karel?