Scott Behrens
Analyst · Wedbush Securities
Thanks, Phil, and good afternoon, everyone. I'll be starting my comments on Slide 6 with key takeaways from the quarter.
As Phil has already mentioned, we saw strong growth in sales across all of our geographies, up $77 million or 67% over the prior-year quarter and up 23% sequentially compared to Q2 of this year. The S1 business contributed nearly $45 million to the increase, and new sales bookings were up $51 million or 69% over the prior year.
The base historical ACI business saw total sales bookings and new sale bookings up 29% and 18%, respectively. So overall, we're very happy with the momentum we're seeing in sales activity.
The strong new sales bookings contributed growth -- to growth in both 60-month and 12-month backlog, up $61 million and $14 million, respectively. We saw a solid revenue quarter with S1 contributing $48 million of revenue. The S1 contribution to revenue was impacted by $4.9 million of deferred revenue haircut. And again that is the revenue that would have been recognized in the normal course of business by S1 but was not recognized due to GAAP purchase accounting requirements, so really $4.9 million of pure margin revenue that we weren't able to recognize.
Our monthly recurring revenue stream coming out of our backlog represented nearly 70% of our total revenue in the quarter, which continues to provide a stable, reliable and predictable base of our revenue stream. Also, foreign currency movements compared to the prior-year quarter reduced this year's revenue by about $2 million.
And turning lastly here to operating expenses, the operating expenses growth compared to the prior-year quarter was almost entirely related to the S1 acquisition as the operating expenses for our base historical business was essentially flat compared to the prior year. And we also incurred $4.5 million of integration-related onetime expenses in the quarter, and again primarily related to the continued consolidation of our facilities in our data center operations.
Continuing on Slide 7, with key takeaways from the quarter. Excluding the impact of the $4.5 million of integration-limited onetime expenses and the impact of the $4.9 million of deferred revenue haircut, we saw solid operating income of nearly $18 million and adjusted EBITDA of $34 million.
From a debt and liquidity perspective, we ended the quarter with nearly $88 million in cash. Also during the quarter, as Phil said, we settled the outstanding warrants with IBM for just under $30 million, and we repurchased stock about 312,000 shares for a total of around $14 million.
We used $3 million during the quarter for our scheduled paydown on our term loan and finished the quarter with $385 million of total debt. And as Phil already mentioned, we closed the acquisition of Distra during the quarter for $50 million.
And lastly on this slide, we continue on plan with the integration of our IT infrastructure and our facilities consolidation. And again just overall, we're very happy with the integration efforts so far this year.
Next, turning to Slide 8 for comments on our full year outlook. Based on some of the feedback we received during the last earnings call, we acknowledge that we may have caused some confusion in how we presented our guidance expectations, again in prior quarters, by showing a GAAP revenue expectation but non-GAAP margin numbers. In prior quarters our guidance added back for the onetime expenses associated with the acquisition, but did not add back to the deferred revenue haircut.
So to clarify here, we presented the guidance below on a non-GAAP basis for all 3 metrics, adding back for both the onetime expenses as well as the impact of the deferred revenue haircut.
That being said, based on what we're seeing in the business today, we are comfortable reaffirming our full year guidance expectations for non-GAAP revenue in a range of $706 million to $716 million. Non-GAAP operating income in a range of $122 million to $127 million and adjusted EBITDA in a range of $188 million to $193 million. Again these metrics adjusted to reflect the add-back of the $31 million of expected onetime integration-related expenses, as well as adding back for the $23 million of expected deferred revenue haircut.
Looking at Q4, roughly 90% of our fourth quarter revenue is expected to come from our backlog. So again, that's our existing contracted book of business, which is consistent with our historical fourth quarter experience. And the remainder of the revenue for the fourth quarter will come from fourth quarter sales bookings.
We are -- in the fourth quarter, we're expecting to continue the momentum in sales bookings that we began here in Q3, with fourth quarter sales bookings expected to exceed $300 million, with new sales net of term extensions expected to be around $230 million. So for the fourth quarter, we expect GAAP revenue in a range of $245 million to $255 million, non-GAAP operating income in a range of $77 million to $82 million and adjusted EBITDA in a range of $98 million to $103 million.
With that, let me turn to Slide 9 with preliminary views on what we're seeing for 2013. And really to build the outlook for 2013, you first have to start by normalizing 2012 or essentially annualizing the impact of the S1 acquisition as if it closed at the beginning of the year. So this table summarizes what 2012 would have looked like with 6 more weeks of revenue from the S1 operations, around $27 million of revenue and one more quarter of phase 1 cost takeouts. Remember we had executed $33 million of cost takeouts as of March 31 of this year, so this walk adds one more quarter of cost savings or about $8 million.
So our normalized full year basis and what essentially represents our launch point going into 2013, our launch point would have a revenue in a range of $733 million to $743 million, operating income in a range of $130 million to $135 million, and adjusted EBITDA in a range of $196 million to $201 million.
So with that as our baseline, we expect sales net of term extensions to be in the high single digits to low double digits, which when combined with a strong second half of the year sales bookings we're seeing here in 2012 should contribute to revenue growth in the mid to high single digits for 2013. Also we expect the operating margins to be in a range of 19% to 20%, adjusted EBITDA margins in a range of 28% to 29%. And just as a reminder, these margin numbers will benefit from the facilities and data center consolidation activities that are continuing here on plan through the rest of the year. Those activities will deliver $15 million of cost savings next year.
And finally, here we expect diluted shares outstanding to approximate 40 million shares, and that excludes any future buyback activity.
So in conclusion, we had a solid third quarter. Our sales bookings had regained momentum, which we expect to contribute to finishing with a strong fourth quarter and set us up for healthy growth and profitability as we look into 2013.
So that concludes my prepared remarks. Operator, we are ready to open the line for questions at this time.