Since we can't see your return in this forum, it's hard to say if you reported it correctly.
Going through the California interview, you should come to a page asking about 'California adjustments' where you would have subtracted the Schedule C income earned in Idaho (and any other income not sourced to CA).
Review your CA return. Most states start with the AGI from your federal return, then you need add or subtract accordingly for income that does not belong to that state.
Your Resident State taxes all of your income and figures your tax. The Tax Amount is then adjusted for taxes you reported paid to another state (in the Idaho interview).
Review your Idaho return to verify this.
If you want someone to review your return before filing, you could ask for an Expert Review.
Here's more info on How to File a Non-Resident State Return.
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