Diamond Offshore Drilling (NYSE: DO) reported earnings on Feb. 5. Here are the numbers you need to know.

The 10-second takeaway
For the quarter ended Dec. 31 (Q4), Diamond Offshore Drilling beat slightly on revenues and crushed expectations on earnings per share.

Compared to the prior-year quarter, revenue was unchanged and GAAP earnings per share dropped significantly.

Gross margins grew, operating margins increased, net margins shrank.

Revenue details
Diamond Offshore Drilling tallied revenue of $750.5 million. The 20 analysts polled by S&P Capital IQ anticipated net sales of $738.1 million on the same basis. GAAP reported sales were 2.2% higher than the prior-year quarter's $734.3 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 $1.41. The 30 earnings estimates compiled by S&P Capital IQ predicted $1.11 per share. GAAP EPS of $1.12 for Q4 were 17% lower than the prior-year quarter's $1.35 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 49.7%, 510 basis points better than the prior-year quarter. Operating margin was 34.1%, 440 basis points better than the prior-year quarter. Net margin was 20.7%, 500 basis points worse than the prior-year quarter.

Looking ahead
Next quarter's average estimate for revenue is $743.4 million. On the bottom line, the average EPS estimate is $1.09.

Next year's average estimate for revenue is $3.19 billion. The average EPS estimate is $5.13.

Investor sentiment
The stock has a five-star rating (out of five) at Motley Fool CAPS, with 1,921 members out of 1,965 rating the stock outperform, and 44 members rating it underperform. Among 468 CAPS All-Star picks (recommendations by the highest-ranked CAPS members), 453 give Diamond Offshore Drilling 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 Diamond Offshore Drilling is hold, with an average price target of $73.87.

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Seth Jayson had no position in any company mentioned here at the time of publication. You can view his stock holdings here. He is co-advisor of Motley Fool Hidden Gems, which provides new small-cap ideas every month, backed by a real-money portfolio. The Motley Fool has no position in any of the stocks mentioned. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.