Shares of Buffalo Wild Wings fell by as much as 6% after the company's fourth-quarter report missed by a wide margin on both the top and bottom lines. The company's full-year 2017 earnings outlook was also well below expectations.

"The challenging restaurant environment continued in the fourth quarter and culminated with a difficult December," Buffalo Wild Wings President and Chief Executive Officer Sally Smith said in the earnings release.

Here's a look at the key numbers:

EPS $0.87 ($1.26 expected)

$0.87 ($1.26 expected) Revenue $494.2 million ($513.7 million expected)

$494.2 million ($513.7 million expected) Comp sales at company-owned restaurants -4.0% (-1.7% expected)

-4.0% (-1.7% expected) Full-year 2017 EPS Guidance $5.60 to $6.00 ($6.47 expected)