Shares of InfoSpace (INSP) - Get Report tumbled in the late-trading session after the company's strong first-quarter results were overwhelmed by second-quarter guidance that was below analysts' expectations.

The maker of online search and entertainment products said after the bell Tuesday that profit for the quarter ended March 31 rose to $93.9 million, or $2.52 a share, from $36.7 million, or $1.03 a share. This year's quarter included a gain from a litigation settlement of $77.3 million, or $2.07 a share.

Excluding items in both periods, net income rose to $16.6 million, or 45 cents a share, from $5.4 million, or 15 cents a share, a year earlier.

Revenue jumped 81% in the quarter to $87 million from $48.1 million.

The results were above analysts' consensus expectations, which had anticipated earnings before items of 37 cents a share on revenue of $86 million.

However, the company's near-term guidance disappointed. For the second quarter, InfoSpace said it expects to earn 36 cents to 39 cents a share on revenue of $83 million to $85 million. This was below analysts' expectations of earnings of 42 cents a share and revenue of $91.7 million.

For the full year, the company expects earnings of $1.75 a share to $1.95 a share on revenue of $375 million to $395 million, essentially bracketing the Thomson First Call consensus of earnings of $1.85 a share and revenue of $387.5 million.

InfoSpace shares were recently off $8.57, or 19.1%, to $36.42 in after-hours trading.