It's illegal to commit an assault or battery against anyone. However, if the defendant is charged with committing an offense against a domestic partner, Idaho domestic violence laws make the allegation much more serious.
Important Domestic Violence Terms:
1) “Household member” means a person who is a spouse, former spouse, or a person who has a child in common (regardless of whether they have been married), or a person with whom a person is cohabiting, whether or not they have married or have held themselves out to be husband or wife.
2) “Traumatic injury” means a condition of the body, such as a wound or external or internal injury, whether of a minor or serious nature, caused by physical force.
Any household member who inflicts a traumatic injury upon any other household member may be charged and convicted of a felony. A felony domestic battery conviction is punishable by imprisonment for a term not to exceed ten (10) years, by a fine not to exceed ten thousand dollars ($10,000), or by both fine and imprisonment.
A household member who commits an assault or battery on another household member that does not result in traumatic injury may be found guilty of a misdemeanor domestic violence. A first misdemeanor conviction is punishable by a fine not exceeding one thousand dollars ($1,000), by imprisonment in a county jail not to exceed six (6) months, or both.
A second conviction misdemeanor conviction carries enhanced penalties - imprisonment in the county jail for a term not to exceed one (1) year, a fine not exceeding two thousand dollars ($2,000), or both a fine and imprisonment.
A third misdemeanor domestic violence crime within fifteen (15) years of the first conviction, is a felony. The punishment for a third offense is imprisonment in the state prison for a term not to exceed five (5) years, a fine not to exceed five thousand dollars ($5,000), or both.
A conviction for misdemeanor DV where the defendant was convicted of a felony DV within the last 15 years, is a felony offense and subject to imprisonment in the state prison for a term not to exceed ten (10) years, a fine not to exceed ten thousand dollars ($10,000), or both.
The maximum penalties are doubled where the crime is committed in the presence of a child. “In the presence of a child” means in the physical presence of a child or knowing that a child is present (nearby) and may see or hear an act of domestic assault or battery.
A “child” for these purposes is a person under sixteen (16) years of age.