Welcome to life on the edge, played out in a suburban backyard. When Ben loses his job as a loan officer, he and his wife Mary ponder how they can stay afloat. Then, a couple who can’t afford more than ramen noodles for dinner, moves into the long-vacant house next door, and the two couples find common ground in their new economic doldrums. Portland Playhouse brings Detroit to the stage now through Nov. 3. Details at Portland Playhouse.