On page 76 of the 2012 Idaho Big Game Seasons & Rules brochure there is a detail list of archery equipment that is unlawful for use to pursue or kill big game animals. I have copied and pasted the section below here. However, specifically to the broadhead in question, the NAP Blood Runner is unlawful for use as it is an expanding broadhead.
In any hunt, including general any-weapon seasons and shortrange
hunts, it is unlawful to pursue or kill big game animals:
• With arrows or bolts having broadheads measuring less
than 7/8 inch in width and having a primary cutting edge
less than 0.015 inch thick.
• With any bow having a peak draw weight of less than 40
pounds up to or at a draw of 28 inches.
• With an arrow or bolt wherein the broadhead does not
precede shaft and nock.
• With any chemicals or explosives attached to the arrow or
• With arrows or bolts having expanding broadheads.
• With arrows or bolts having barbed broadheads, which is
a broadhead with any portion of which forms an angle less
than 90 degrees with the shaft or ferrule.
• With any electronic or tritium-powered device attached
to an arrow, bolt or bow. Except disabled archery permit
holders may use a nonmagnifying sight with battery
powered or tritium lighted reticles.
• With any bow capable of shooting more than one arrow at
• With any compound bow set at more than 85 percent letoff.
• With an arrow or bolt, and broadhead with a combined
total weight of less than 300 grains.
• With an arrow less than 24 inches from broadhead to nock
• With a bolt (crossbow) less than 12 inches from broadhead
to nock inclusive.