The International Documentary Association has named Rachel Denny deputy executive director of the nonprofit organization, reporting directly to IDA executive director Dominic Asmall Willsdon . Denny, who has served in leadership roles at the Sundance Institute, Film at Lincoln Center, and United States Artists, began her new role this week. She will be based in New York, where more than a quarter of IDA members live. The IDA, which supports the documentary community through year-round programs and grants, and presents the annual IDA Documentary Awards, is based in Los Angeles.…