
Idaho Code Sec 32-717 (3)
"In any case where the child is actually residing with a grandparent in a stable relationship, the court may recognize the grandparent as having the same standing as a parent for evaluating what custody arrangements are in the best interests of the child."
http://www.legislature.idaho.gov/idstat/Title32/T32CH7SECT32-717.htm
See Also Hernandez v. Hernandez, 265 P.3d 495 (Idaho 2011)
and Troxel v. Granville, 530 U.S. 57 (2000) (A parent has a fundamental right under the Due Process Clause of the Fourteenth Amendment "to make decisions concerning the care, custody and control of their children.")
Guardianship
http://www.legislature.idaho.gov/idstat/Title15/T15CH5PT2.htm
Parental Power of Attorney
http://www.legislature.idaho.gov/idstat/Title15/T15CH5SECT15-5-104.htm