Nella Larsen's Passing (about Idlewild)
"And the next day's Friday when I'll be going away for the week-end, Idlewild, you know. It's quite the thing now." p. 24
I didn't know.
So I looked it up. Apparently Idlewild was a resort in Michigan (north of Grand Rapids) that catered to the black middle class in the early 1900s.
If you want to learn more about Idlewild, click here.