Red Robin Gourmet Burgers (Nasdaq: RRGB) reported earnings on May 21. Here are the numbers you need to know.

The 10-second takeaway
 For the quarter ended April 21 (Q1), Red Robin Gourmet Burgers met expectations on revenues and met expectations on earnings per share.

Compared to the prior-year quarter, revenue expanded slightly. GAAP earnings per share dropped.

Gross margins grew, operating margins dropped, net margins dropped.

Revenue details
 Red Robin Gourmet Burgers booked revenue of $306.3 million. The 13 analysts polled by S&P Capital IQ foresaw revenue of $306.9 million on the same basis. GAAP reported sales were the same as the prior-year quarter's.

Source: S&P Capital IQ. Quarterly periods. Dollar amounts in millions. Non-GAAP figures may vary to maintain comparability with estimates.

EPS details
 EPS came in at $0.66. The 14 earnings estimates compiled by S&P Capital IQ anticipated $0.66 per share. GAAP EPS of $0.66 for Q1 were 7.0% lower than the prior-year quarter's $0.71 per share.

Source: S&P Capital IQ. Quarterly periods. Non-GAAP figures may vary to maintain comparability with estimates.

Margin details
 For the quarter, gross margin was 22.8%, 30 basis points better than the prior-year quarter. Operating margin was 4.4%, 90 basis points worse than the prior-year quarter. Net margin was 3.1%, 40 basis points worse than the prior-year quarter. (Margins calculated in GAAP terms.)

Looking ahead
 Next quarter's average estimate for revenue is $240.2 million. On the bottom line, the average EPS estimate is $0.65.

Next year's average estimate for revenue is $1.02 billion. The average EPS estimate is $2.22.

Investor sentiment
 The stock has a three-star rating (out of five) at Motley Fool CAPS, with 249 members out of 311 rating the stock outperform, and 62 members rating it underperform. Among 106 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 91 give Red Robin Gourmet Burgers a green thumbs-up, and 15 give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on Red Robin Gourmet Burgers is outperform, with an average price target of $47.85.

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