Well actually no.. there must be intent to permanently deprive the owner or possessor.
Taken from the police.wa.gov.au website (which can be found
Here):
'Theft
The unlawful taking or obtaining of money, goods or services, without the use of force, threat of force or violence, coercion or deception,
with the intent to permanently deprive the owner or possessor of the use of the money or goods. This category of offence includes the theft of vehicle parts or the contents of a vehicle.'
But I'm sure Inno will give your medals back