Rolling In Dough Meaning

(idiomatic) Rich, very prosperous.

Example: 1938, H. Martin Peters, "Short Short Story: Wedding Gift," Pittsburgh Press, 14 Sept., p. 32:
  I know you have a lot of big-shot friends rolling in dough.
2008, Daniel McGinn, "Don’t Forget the Purell," Newsweek, 9 Oct.:
  So far this year Lazrak and DuRoss have sold 85 homes worth $16.2 million, but after expenses, each will barely break the $100,000 mark this year. "We're not rolling in dough," Lazrak says.