If you are a resident of Idaho, then the income is subject to Idaho State income tax.
You can ask the employer to take out Idaho state taxes (but they don't have to).
Do your return in TurboTax and then go to "Other tax situations" and to subheading, "Other Tax Forms" then to Form W-4 and estimated taxes, and TurboTax will generate estimated tax forms for you to file for 2019, to avoid penalties from Idaho for under withholding.
