The results for our first quarter were largely as we anticipated, with consolidated revenues growing 8.8% and an overall adjusted operating margin for our core laundry operations of approximately 10%.
In our first quarter of 2022, consolidated revenues were $486.2 million, up 8.8% from $446.9 million a year ago, and consolidated operating income decreased to $44.8 million from $56 million in -- or 20.1%.
Net income for the quarter decreased to $33.7 million or $1.77 per diluted share from $41.9 million or $2.20 per diluted share.
Our financial results in the first quarter of fiscal 2022 included $5.9 million of costs directly attributable to the three key initiatives that Steve discussed.
Excluding these initiative costs, adjusted operating income was $50.7 million, adjusted net income was $38.1 million, and adjusted diluted earnings per share was $2.
Our core laundry operations revenues for the quarter were $428.8 million, up 9.1% from the first quarter of 2021.
Core laundry organic growth, which adjusts for the estimated effect of acquisitions as well as fluctuations in the Canadian dollar, was 8.6%.
Core laundry operating margin decreased to 8.5% for the quarter or $36.5 million from 12.4% in the prior year or $48.9 million.
And excluding these costs, the segment's adjusted operating margin was 9.9%.
Energy costs increased to 4.3% of revenues in the first quarter of 2022, up from 3.6% in prior year.
Revenues from our specialty garments segment, which delivers specialized nuclear decontamination and cleanroom products and services, increased to $39.5 million from $38.1 million in prior year or 3.5%.
The segment's operating margin increased to 21.9% from 18.8%, primarily due to lower merchandise costs as a percentage of revenues.
Our first aid segment's revenues increased to $17.8 million from $15.5 million in prior year or 14.8%.
However, the segment had an operating loss of $0.3 million during the quarter primarily due to continued investment in the company's initiative to expand its first aid van business into new geographies.
We continue to maintain a solid balance sheet and financial position with no long-term debt and cash, cash equivalents, and short-term investments totaling $478.1 million at the end of our first quarter of fiscal 2022.
Capital expenditures for the quarter totaled $31.1 million as we continued to invest in our future with new facility additions, expansions, updates, and automation systems that will help us meet our long-term strategic objectives.
As a result, the capitalization of costs related to our CRM project in the quarter totaled only $1.7 million.
During the first quarter of fiscal 2022, we repurchased 22,750 common shares for a total of $4.8 million under our previously announced stock repurchase program.
At this time, we now expect our full-year revenues for fiscal 2022 will be between $1.94 billion and $1.955 billion.
These acquisitions are expected to add approximately $10 million to our fiscal 2022 revenues.
We further expect that our diluted earnings per share for fiscal 2022 will now be between $5.50 and $5.80.
This earnings per share guidance assumes an effective tax rate of 24% and continues to include an estimate of $38 million worth of costs directly attributable to our key initiatives that will be expensed during the year.
Core laundry operations adjusted operating margin at the midpoint of the range is now 9.2%, which reflects continued pressure from costs that trended lower during the pandemic and the current inflationary environment.
Our assumed adjusted tax -- our assumed adjusted tax rate for fiscal 2022 is 24.25%.
Adjusted diluted earnings per share is expected to be between $7 and $7.30.

Summary:
In our first quarter of 2022, consolidated revenues were $486.2 million, up 8.8% from $446.9 million a year ago, and consolidated operating income decreased to $44.8 million from $56 million in -- or 20.1%.
Net income for the quarter decreased to $33.7 million or $1.77 per diluted share from $41.9 million or $2.20 per diluted share.
At this time, we now expect our full-year revenues for fiscal 2022 will be between $1.94 billion and $1.955 billion.
We further expect that our diluted earnings per share for fiscal 2022 will now be between $5.50 and $5.80.
Adjusted diluted earnings per share is expected to be between $7 and $7.30.