NuStar Energy (NYSE: NS) reported earnings on April 24. Here are the numbers you need to know.

The 10-second takeaway
 For the quarter ended March 31 (Q1), NuStar Energy crushed expectations on revenues and missed estimates on earnings per share.

Compared to the prior-year quarter, revenue shrank significantly. GAAP earnings per share shrank significantly.

Margins increased across the board.

Revenue details
 NuStar Energy chalked up revenue of $999.7 million. The six analysts polled by S&P Capital IQ predicted revenue of $769.6 million on the same basis. GAAP reported sales were 42% lower than the prior-year quarter's $1.74 billion.

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 $0.14. The 12 earnings estimates compiled by S&P Capital IQ predicted $0.44 per share. GAAP EPS of $0.14 for Q1 were 39% lower than the prior-year quarter's $0.23 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 13.0%, 610 basis points better than the prior-year quarter. Operating margin was 5.9%, 310 basis points better than the prior-year quarter. Net margin was 2.4%, 150 basis points better than the prior-year quarter. (Margins calculated in GAAP terms.)

Looking ahead
 Next quarter's average estimate for revenue is $716.8 million. On the bottom line, the average EPS estimate is $0.51.

Next year's average estimate for revenue is $4.04 billion. The average EPS estimate is $1.63.

Investor sentiment
 The stock has a three-star rating (out of five) at Motley Fool CAPS, with 352 members out of 371 rating the stock outperform, and 19 members rating it underperform. Among 124 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 121 give NuStar Energy 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 NuStar Energy is hold, with an average price target of $49.90.

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