Up to 160 Applebee's and IHOP restaurants could be closing around the country, but the Applebee's-IHOP restaurant in Detroit is safe.

The hybrid eatery is set to open in the downtown Millender Center in March, said Amy Mason, spokeswoman for DineEquity Inc., which is the parent company of Applebee's and IHOP.

Locations of the closing restaurants have not been released because not all have been identified, Mason said. An Applebee's in Harper Woods closed in March.

A second quarter earnings report released Thursday by the Glendale, Calif.-based causal-dining company showed a sales decline of 2.6 percent at IHOP and 6.2 percent at Applebee's.

"We are investing in the empowerment of our brands by improving overall franchisee financial health, closing underperforming restaurants and enhancing the supply chain," Richard J. Dahl, chairman and interim CEO of DineEquity, said in a written statement.

The company reported a net income of $20.9 million in the second quarter, down $5.5 million year over year.

Fast-casual dining is slumping amid a shift in customer trends and demands. Bagger Dave's Burger Tavern recently closed three restaurants in Southeast Michigan.

DineEquity is planning to open 80-95 new IHOP locations and 20-30 new Applebee locations, Mason said. The closings will make the company healthier by nixing underperforming locations.

"We want every restaurant to be vibrant and thriving so we'll close restaurants that are creating a substandard experience," Mason said.

Also Thursday, DineEquity announced a new CEO, Stephen Joyce, who is former CEO of Maryland-based Choice Hotels and is replacing Julia Stewart.

DineEquity operates more than 3,700 restaurants in 19 countries and about 400 franchisees.