Patrick Moore
Analyst · Goldman Sachs
Thank you, Reade, and good morning, everyone. I'll be starting my remarks on Slide 8.
As Reade noted, our business continued to perform very well in the fourth quarter, and we are extremely pleased with our results. The 2 fundamental revenue drivers of our business are new store growth and comparable store sales growth.
During the quarter, we added 17 new stores, all in our America's Best brand. For the year, we opened 76 stores and closed 6 locations, which represents 7.4% increase in stores, with the openings almost entirely in our America's Best and Eyeglass World brands.
Regarding the performance of new stores, we have noted that these stores have taken approximately 3 to 5 years to mature. While we do not disclose vintage-specific results, I do want to provide some color on the 2017 business performance.
As we compare multiyear results for stores opened at least 6 months, sales in our 2017 vintage are performing near the top of the historical range. We would note that most of these stores are now going through their first peak seasonality period when refreshed insurance benefits and tax refunds drive customer traffic to heightened levels.
The chart of adjusted comparable store sales growth presents our comps calculated on a cash basis and highlights the strong performance in the quarter. Same-store sales growth increased 10.4% versus the 7% increase in the fourth quarter of last year. As Reade mentioned, this comp growth was driven predominantly by an increase in customer transactions. Comps also benefited from hurricane-related sales recovery in the quarter.
During the fourth quarter, we generated positive comps in all 5 brands. America's Best led the way with strong performance of 11.8% on top of 10.4% in the fourth quarter of 2016. For the year, comps at America's Best were 10.1%, representing the third consecutive year that the AB team has delivered comparable store sales growth of at least 9.5%.
At Eyeglass World, comps increased 11.7% for the fourth quarter. This, in part, reflects the brand's recovery in the quarter from the severe impact of Hurricane Irma in the prior quarter, given our concentration of stores in Florida.
As we assess the total impact of hurricanes on our revenue in both the third and fourth quarter, we believe the overall net impact to revenue across the time period was immaterial. This recovery in our operating performance after a substantial external event like a hurricane is a great example of customer behavior regarding the purchase of a medical necessity and the resiliency of our service-based business model.
Legacy comps increased 5.5% in the fourth quarter. Of this growth, we estimate approximately 260 basis points of benefit from incremental eye exam revenues tied to the operational changes and resulting volume shift from FirstSight. Excluding the benefit of this transition, we're encouraged that the underlying business results in the legacy segment returned to positive territory in the quarter.
Similarly, we are encouraged by the solid Q4 results at our military and Fred Meyer brands as well.
Turning to the income statement highlights on Slide 9. Net revenue increased 16.1% to $321.8 million, adjusted EBITDA increased 19.4%, and adjusted EBITDA margin grew 20 basis points to 7.8% in the quarter. Cost applicable to revenue increased 16.9%, or an increase of 40 basis points as a percentage of revenue versus last year. We continue to experience higher optometrist costs due to wage inflation.
For our doctors, we're glad to pay competitive salaries for the good work that they do. We work extremely hard to attract and retain optometrists, and compensation is an important part of this equation.
SG&A expenses increased 17.8% or an increase of 70 basis points as a percentage of revenue. The largest factor in the increase was a $4.4 million expense related to the automatic termination of our monitoring agreement with our sponsors in connection with the initial public offering, which represented about half of the increase as a percentage of revenue.
To a lesser extent, we experienced higher write-offs associated with managed care receivables. Increased participation in managed care plans has been a positive factor in our growth in recent years. The higher managed care write-offs resulted from increasing managed care penetration as a percentage of total revenues as well as an increase in Q4 costs tied to a provider's system conversion. These costs were partially offset by a leveraging of expenses such as advertising and corporate overhead.
Depreciation and amortization expense increased $3 million compared to the fourth quarter of last year. The growth reflects our ongoing investments in new stores and our network of eyeglass laboratories as well as our omnichannel-related investments that were capitalized during the fourth quarter of 2017.
Interest expense increased $4.9 million versus the fourth quarter of last year, which reflects 2-point -- $3.2 million in write-offs of deferred debt cost amortization as a result of the $125 million payoff of our second lien credit agreement with the proceeds from the IPO.
Additionally, incremental interest of $2.5 million was associated with our derivatives and was partially offset by approximately $1 million in lower interest driven by the IPO-related debt paydown.
We recorded an income tax benefit of just over $48 million for the fourth quarter of 2017 compared to an income tax benefit of $3.4 million in the prior year. The income tax benefit this quarter reflects the effect of U.S. tax reform as of quarter-end as noted in our earnings release.
The 2017 tax act required us to remeasure certain deferred tax assets and liabilities at the reduced U.S. corporate income tax rate of 21%. As a result, the company realized a onetime $43 million tax benefit.
In a few moments, I will talk more about our future tax rate expectations.
Included in the income tax benefit in the quarter was an approximate $2.0 million income tax expense driven by onetime discrete tax items. Adjusted net loss was $3 million compared to a loss of $1.7 million in the fourth quarter of 2016. The increase in adjusted net loss reflects the impact of the increase in interest expense, higher depreciation and amortization as well as the $2 million in discrete tax expense items.
As a reminder, the net revenues and adjusted EBITDA results do not include amounts reflected as deferred revenue. Recall that deferred revenue is generated from our contact lens club and eyeglass warranty programs, and provides current period cash benefits not reflected in our income statement. For the fourth quarter of '17, there was a $2.4 million net decrease in deferred revenue due to typical fourth quarter seasonality.
Finally, as disclosed, we had a zero-sum shift in revenue and expense from the Corporate/Other segment into our legacy segment driven by the FirstSight operational changes noted in our press release.
In addition, in connection with changes in California law, we ceased the sale of vision care products in Walmart locations that are not operated by National Vision. As a result, revenues and associated costs in the Corporate/Other segment in the fourth quarter were both approximately $1.5 million lower than the fourth quarter of 2016. There were no material impacts on profitability.
Turning to Slide 10 and fiscal 2017 results. This was another consistent year of performance for the company with same-store sales growth of 7.5%, net revenues up 15% and adjusted EBITDA up 15.9%. We achieved these results in a year where there was fluctuation in quarterly comp growth driven by external factors such as weather, timing of tax reforms and calendar shifts. But in each instance this year, the business eventually recovered. Adjusted EBITDA margin increased by 10 basis points to 11.6% as we continued to reinvest in initiatives to drive future growth.
And similar to the quarter's results, our full year results do not include amounts reflected in deferred revenue where there was a $6.8 million net increase during the year.
Turning to Slide 11. At the end of the fourth quarter, our total debt was $569 million and our cash balance was $4 million. During the quarter, we used the proceeds from our IPO to pay down $235 million of our first lien credit facility and eliminated the entire $125 million second lien. These were significant balance sheet improvements for the business, and we look forward to the possibility of additional deleveraging as we continue to execute on our business model.
For the year, we invested just over $93 million in capital expenditures, with the majority of the CapEx focused on growth initiatives.
Turning to Slide 11 (sic) [ 12 ], I'll conclude with some commentary on our 2018 outlook, which we included in the earnings release.
First is a housekeeping item. I want to point out the company will experience the elimination of approximately $6 million in revenue and the same amount in costs this year associated with the FirstSight operational changes mentioned earlier. This will affect the comparability of revenue between 2017 and 2018, but there are no material impacts on profitability.
Our 2018 outlook is as follows: net revenues of $1.485 billion to $1.515 billion; adjusted comparable store sales growth in a range of 3% to 5%, opening approximately 75 new stores; adjusted EBITDA between $172 million and $177 million; and adjusted net income between $52 million and $56 million.
We project another year, our 17th consecutive year, of positive same-store sales growth in 2018. And it's important to remember that while we expect our brands to continue to perform well, we will be facing challenging comparisons from the strong comp trend for the last 3 years, especially in our America's Best brand. As a result, we believe it is prudent and responsible to plan the business at 3% to 5% comps as reflected in our 2018 outlook.
Store openings this year will be predominantly in our America's Best brand, with the remainder being Eyeglass World stores, similar to the mix of openings between these brands in 2017. The timing of the America's Best openings are generally evenly weighted across the year, while the Eyeglass World openings are planned for the second half. We project a couple of closings as is typical each year.
We expect adjusted EBITDA margin to be relatively stable despite over $2 million in incremental public company costs this year. We're highly focused on managing cost in an environment of rising wages. In addition, we continue to reinvest in growth and build out our omnichannel capabilities.
We expect adjusted net income growth this year will exceed 60% at the midpoint of our outlook, reflecting a lower estimated effective tax rate due to tax reform. Taking this into account, we project an effective tax rate of approximately 26% for 2018 versus a normalized tax rate of 39% in 2017.
As a result, we are estimating that the cash benefit of tax reform could approach $20 million during 2018. We've been reinvesting at a fairly high rate over the last several years, utilizing our business model's positive operating cash flows to invest in significantly increased new store growth, labs and system improvements, and more recently, focusing on omnichannel capabilities. As a result, we believe we're in a great position at this time. We will strategically invest incremental cash flows with a focus on growth investments and other areas such as an improvement in our customer-facing technologies for stores and online, balance sheet improvements, which could come in the form of debt pay down or improved interest rates, and potential incremental competitive wage investments on a geographic basis.
In addition, we estimate annual interest expense of $37 million to $38 million, depreciation and amortization of about $72 million to $73 million and capital expenditures between $100 million and $105 million.
Our business has delivered highly consistent results on a semiannual to annual basis. It can experience fluctuations quarter-to-quarter. For example, unearned revenue can be highly variable as it depends in great part on customer behavior and is ultimately an issue of the timing of sales and the volume of sales in the last 79 days of the quarter compared to the same period in the prior quarter. Also, last year's delay in tax refunds was a factor in weaker-than-expected first quarter, which resulted in lower incentive compensation. Finally, weather events can be disruptive on a short-term basis.
So while we do not provide specific quarterly guidance, we do want to make sure that you're aware of key factors that may affect our quarter-to-quarter comparisons in 2018.
In terms of adjusted EBITDA, we expect the rate of growth to vary over the course of the year, with stronger adjusted EBITDA growth in the second half of 2018. We expect that certain items will impact adjusted EBITDA in the first quarter, collectively in a range of $4 million to $5 million. These items include the net change in unearned revenue, new public company costs and higher incentive compensation.
Additionally, we are now in the midst of our peak season. There are 3 key weeks remaining in the quarter, which are all subject to the components of variability that I just mentioned.
One last topic to mention is the implementation of new revenue recognition accounting rules that will be starting in Q1 of '18. The new statements will alter our accounting for revenues for our eye care club, resulting in more revenue recognized upfront from each contract and less deferred revenue. We estimate the implementation of this standard will result in a onetime reduction of deferred revenue with an immaterial impact on 2018 net revenues. Under these standards, we estimate the net change in deferred revenue in 2018 will be reduced by approximately $1 million. There are no impacts to our accounting beyond this specific item.
All of the aforementioned items have been contemplated in the 2000 (sic) [ 2018 ] outlook ranges provided.
In summary, we're very pleased with our record performance in 2017. We're focused on executing our 2018 strategic growth initiatives and look forward to delivering another year of consistent growth.
This concludes our prepared remarks. And at this time, I'll turn the call back over to Brian to start our Q&A session.