Detroit private equity firm Rockbridge Growth Equity announced on Wednesday that it has acquired Malibu’s Robb Report, the luxury lifestyle magazine that serves as a consumer bible for the uber-rich.

Rockbridge will contribute capital, as well as marketing and technology infrastructure, toward helping the Robb Report grow, Rockbridge Managing Partner Brian Hermelin said in a statement. Financial terms of the deal were not disclosed.

Robb Report, which connects the elite through its magazines, websites, apps, events and a private club, employs 110 people at its headquarters in Malibu, and at offices in New York, Massachusetts and Florida. With the Rockbridge acquisition, the magazine will work toward doubling its global footprint from 14 international editions to 30 in the coming months.

Plans are underway for Robb Report to open a new downtown Detroit office to support the expansion.

In 2013, Robb Report readers had an average household net worth of $1.8 million. About three-fourths of them were men and the average age was 49.

Check out previous coverage of Robb Report in the Los Angeles Business Journal.