Olga's Kitchen in the Compuware Building abruptly closed on Friday.

This is not a huge surprise as the parent company is in bankruptcy and closing branches. This was discussed on this forum earlier. Olga's Filling For Chapter 11 Protection

I think Olga's had a good formula but never evolved from it.

“Closing the One Campus Martius location is a necessary next step for our company and the continued health of all of our operations as we look toward the future,” Michael Kosloski, Olga’s chief operating officer, said in a statement.

The closing came as a surprise to Eddie Dhroso, an employee of Warren-based Intercity Neon Inc., whose company designed and erected the Olga's sign with a giant pita wrap outside the Detroit Olga's. Dhroso helped raise the sign three years ago, and on Friday he helped take it down.