Michael Gazmarian
Analyst · Sidoti
Thank you, H. As we reported earlier this morning, Insteel posted improved results for the first quarter ended December 29, with net earnings rising to $2.4 million or $0.13 per diluted share, the highest level for Q1 since 2008, prior to the onset of the recessionary conditions in our construction end markets. Our results for the quarter were favorably impacted by widening spreads relative to the depressed levels we have experienced over the past year due to the consumption of higher-cost inventory purchased in prior periods coupled with declining selling prices.
Net sales for the first quarter were up 1.3% from the prior year on a 5.5% increase in shipments, partially offset by a 4% reduction in average selling prices. On a sequential basis, net sales were down 12.2% from Q4 on a 12.6% decrease in shipments, reflecting the usual seasonal downturn related to winter weather and the drop-off in construction activity. Average selling prices for Q1 were up 0.5% from the fourth quarter, which marked the first time they have risen sequentially since the fourth quarter of 2012.
Gross profit for the first quarter rose to $8.6 million from $4.7 million a year ago, with gross margins rising to 10% in net sales from 5.5% due to the widening in spreads together with higher shipments and lower unit conversion costs. On a sequential basis, gross profit was up $2.7 million from Q4 and gross margins rose 4% due to the increase in spreads, which more than offset higher unit conversion costs and lower shipments resulting from the seasonal downturn in demand.
SG&A expense for the first quarter was up $0.3 million from the prior year, primarily due to the relative year-over-year changes in the cash surrender value of life insurance policies and higher compensation expense, partially offset by lower bad debt expense. Interest expense for the first quarter fell by $0.2 million from the prior year due to the decrease in our average debt level in the current year and lower borrowing rates on our revolving credit facility relative to the $13.5 million note that was outstanding through most of the prior-year quarter. Our effective income tax rate for the fourth quarter dropped to 34.7% from 37.9% a year ago, primarily due to changes in permanent book versus tax differences.
Moving to the cash flow statement and balance sheet, operating activities provided $23.5 million of cash for the first quarter, while using $0.7 million in the same period a year ago. The year-over-year improvement was primarily driven by the relative changes in net working capital, which provided $17 million of cash in the current year while using $2.9 million in the prior year. Accounts receivable fell $6.9 million during the quarter due to the sequential decrease in sales, and inventories fell $9.5 million from Q4 on a 12% reduction in units and a 2.9% decrease in average unit values, while accounts payable and accrued expenses rose $0.5 million.
The strong operating cash flow for the quarter allowed us to repay the $11.5 million of borrowings that were outstanding on our revolving credit facility, return $5 million to shareholders through the payment of a $4.5 million special cash dividend and a $0.5 million regular cash dividend and fund $2.6 million of capital expenditures primarily related to the expansion of our ESM business. We ended the quarter with $4.8 million of cash and cash equivalents and no borrowings outstanding on our revolving credit facility.
As we look ahead to the remainder of fiscal 2013, the latest macro data for our construction end markets reflects mixed signals. The recovery in the housing market appears to be gaining momentum, with private residential construction spending rising to its highest level in 4 years. Assuming this positive trend continues, the increase in new home construction should begin to favorably impact certain segments within the private non-residential sector, our primary demand driver. Growth in non-res activity, however, is likely to remain modest pending a more pronounced recovery in the overall economy.
In November, the architectural billings index, a leading indicator for non-residential construction activity, rose to 53.2, its highest level since November 2007, and it has now remained in positive territory for 4 straight months. It is still unclear whether this improvement represents the beginning of a sustainable trend, however, considering the high degree of volatility in the index over the past year. Despite the ongoing uncertainty in our markets, we expect our financial results for the balance of the year will be favorably impacted by the anticipated benefits realized from the recently completed reconfiguration of our welded wire reinforcement operations and the increasing contribution provided by the Ivy acquisition.
I will now turn the call back over to H.