Denny's Corporation reported sales results for its fourth quarter and fiscal year ended December 27, 2017. For the fourth quarter, the company's domestic system-wide same-store sales increased 2.2%, including a 2.2% increase at domestic franchised restaurants and a 2.1% increase at company restaurants. 

For the Fiscal year 2017, domestic system-wide same-store sales grew 1.1%, including 1.1% growth at domestic franchised restaurants and 1.0% growth at company restaurants.  On a two-year basis, this represents 1.9% domestic system growth, comprised of 1.9% growth at domestic franchised restaurants and 2.1% growth at company restaurants.

The company reiterates earnings guidance for the full year of 2017. For the full year, the company expects adjusted EBITDA of between $101 million and $103 million and adjusted free cash flow of between $48 million and $50 million.