Randy Jackson's Wife Files for Divorce After 18 Years of Marriage to American Idol Judge and Mentor

This was the second marriage for the musician and American Idol judge/mentor

Looks like Randy Jackson ended up in the dawg house.

The American Idol judge turned mentor's wife, Erika, filed for divorce today after more than 18 years of marriage, according to court documents obtained by E! News.

She cited irreconcilable differences as the reason for the split and listed their date of separation as Sept. 11.

Erika—who's petitioning to have her maiden name of Riker be legally restored—married Jackson on Dec. 29, 1995. They have two kids together, but 17-year-old son Jordan is the only minor.

Erika is asking for joint legal custody and primary physical custody, with "reasonable visitation" for Randy.

The musician and record producer who's worked with the likes of Mariah Carey, Céline Dion and Whitney Houston spent 12 seasons as a judge on American Idol before shifting into the resident mentor's chair for season 13.

This was Jackson's second marriage. He also has a daughter with his first wife.