Petroskey, 52, a Detroit native and devoted Tigers fan, had served as the Hall's president since July 1999, following 11 years with the National Geographic Society, reaching the position of senior vice president for Mission Programs at the Society. Prior to that, Petroskey, who is married and the father of three children, was assistant press secretary to President Ronald Reagan from April 1985 to March 1987.
"After almost nine productive years at the Hall of Fame, I have offered my resignation to the Hall's Executive Committee, and it has been accepted," Petroskey said in a statement. "The Hall of Fame is a world-class institution, and I am proud of all we have accomplished through vision, hard work, and teamwork. I serve at the pleasure of the Board, and accept the judgment of the Executive Committee.
"It has been an honor to be part of such a great institution and to have met and worked with so many wonderful people. I wish everyone associated with the Hall -- the Hall of Famers and their families, the Board and my staff colleagues -- the very best now and in the future."
Idelson, 43, came to the Hall in September 1994 as director of public relations and was promoted to vice president in June 1999. Prior to joining the Hall, Idelson served as assistant vice president and senior press officer for World Cup USA 1994, the organizing committee charged with staging the World Cup soccer tournament that year in the United States.
The majority of Idelson's work, however, has been in baseball. The West Newton, Mass., native and graduate of Connecticut College was the director of media relations for the Yankees from 1989-93 after three years in the public relations department of the Red Sox. While in Boston, Idelson was the producer of home games for the 110-station Red Sox Radio Network and served as the flagship station's liaison to the team's primary charity, the Jimmy Fund.
Idelson and his wife, Erika, live in Cooperstown and have two children, Aaron, 12, and Nicole, 8.