Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: Shares of telecom and energy holding company IDT (NYSE: IDT) shot up 22% in intraday trading, as investors reacted to the company's fiscal first-quarter earnings.

So what: With no analyst estimates floating around for IDT, the company didn't have any particular bar to clear with its quarterly results. However, investors were treated to another round of the company's increasingly common growth and profitability. After struggling for years with losses and cash burn, IDT is finally back in the black. First-quarter revenue of $357 million rose 9% above the prior year, while earnings per share of $0.70 reversed a $0.17-per-share loss in the prior-year quarter.

Now what: The future certainly looks brighter for IDT, as the company continues to improve its financial performance and unlock its full value. Last year, IDT spun off its CTM Media Holdings (CTMMA), and it's working on doing likewise for its Genie Energy segment. In addition, it's started tapping its hefty cash balance to pay dividends; it's exchanging stock to simplify its equity structure; and it may look into monetizing its voice-over-IP intellectual property. In short, IDT shareholders should have plenty to keep an eye on in the year ahead.

Want to keep up to date on IDT? Add it to your watchlist.

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.

Fool contributor Matt Koppenheffer does not own shares of any of the companies mentioned. You can check out what Matt is keeping an eye on by visiting his CAPS portfolio, or you can follow Matt on Twitter @KoppTheFool or on his RSS feed. The Fool’s disclosure policy assures you no Wookiees were harmed in the making of this article.