Generac Holdings (NYSE: GNRC) reported earnings on May 2. Here are the numbers you need to know.

The 10-second takeaway
 For the quarter ended March 31 (Q1), Generac Holdings beat expectations on revenues and crushed expectations on earnings per share.

Compared to the prior-year quarter, revenue increased significantly. Non-GAAP earnings per share grew significantly. GAAP earnings per share grew significantly.

Margins expanded across the board.

Revenue details
 Generac Holdings booked revenue of $399.6 million. The eight analysts polled by S&P Capital IQ wanted to see a top line of $365.8 million on the same basis. GAAP reported sales were 36% higher than the prior-year quarter's $294.6 million.

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 $1.21. The nine earnings estimates compiled by S&P Capital IQ averaged $0.93 per share. Non-GAAP EPS of $1.21 for Q1 were 55% higher than the prior-year quarter's $0.78 per share. GAAP EPS of $0.73 for Q1 were 66% higher than the prior-year quarter's $0.44 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 38.4%, 70 basis points better than the prior-year quarter. Operating margin was 24.2%, 400 basis points better than the prior-year quarter. Net margin was 12.7%, 250 basis points better than the prior-year quarter. (Margins calculated in GAAP terms.)

Looking ahead
 Next quarter's average estimate for revenue is $318.6 million. On the bottom line, the average EPS estimate is $0.75.

Next year's average estimate for revenue is $1.36 billion. The average EPS estimate is $3.45.

Investor sentiment
 The stock has a three-star rating (out of five) at Motley Fool CAPS, with 63 members out of 73 rating the stock outperform, and 10 members rating it underperform. Among 19 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 16 give Generac Holdings a green thumbs-up, and three give it a red thumbs-down.

Of Wall Street recommendations tracked by S&P Capital IQ, the average opinion on Generac Holdings is outperform, with an average price target of $39.78.

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