The utters almost out of milk at this point but I suspect they will keep jerking for at least 1 more season.
Realistically, probably another 4 or 5 seasons. It's in the ground and Fox just has to squeeze every last dollar they can out of it.
Then they'll bring it back 5 years later...
The only entertaining thing about Idol now is seeing which entertainer is in desperate enough need of publicity to judge. At least JLo got a bit of resurgence out of her stint. Doesn't look like that's gonna happen with Mariah this round. Look to see the bottom of the barrel to start being targeted for the following seasons judges.