also trying pressing 6 / 7 on keyboard to toggle between lighting/no lighting. Kinda looks like you have lighting turned on but by default maya wont have any lights in the scene, so it would look dark like that
In what application do you want to render? As far I know in several applications the default materials already have a detail textures input, at least I remember seeing inputs in standard Unity material, Mamorset material and there is a detail texture material function in Unreals material editor too.