"Our comments and actions have never been ill intentioned, but have crossed the line on more than one occasion," Richmond wrote.
"We recognize that there are systemic and cultural things that need to be fixed to ensure that this doesn't continue happening. We are making this a priority."
The restaurateur promised that management would receive sensitivity training and that a portion of food sales for eight weeks would go toward charity. He also promised to update customers after those weight weeks.
"We're sorry to have let everyone down and we're trying to do the right thing to remedy and prevent this from happening again," he said.