What visa is required to live in Bali for 2 yrs :)

Hi
We want to move to Bali for a couple of years. My husband will fly in and out of Bali for work in Perth whilst we will live in Bali (not working).
Can somebody please advise me on what type of visas we will require and how we go about getting these. Myself and 2 kids are Australian while my husband is a new zealander.
Thanks. We look forward to moving and joining the social events :)
Saskia