Note 10: Intangible assets

Acquired softwareInternally generated softwareTotal
$000$000$000
Cost
Balance at 1 July 2013 3,545 120 3,665
Additions 273 - 273
Disposals - - -
Balance at 30 June 2014 3,818 120 3,938
Additions 236 - 236
Disposals (71) - (71)
Balance at 30 June 2015 3,983 120 4,103
Accumulated amortisation and impairment losses
Balance at 1 July 2013 2,861 112 2,973
Amortisation expense 392 8 400
Disposals - - -
Balance at 30 June 2014 3,253 120 3,373
Amortisation expense 181 - 181
Disposals (71) - (71)
Balance at 30 June 2015 3,363 120 3,483
Carrying amounts
At 1 July 2013 684 8 692
At 30 June 2014 565 - 565
At 30 June 2015 620 - 620

There are no restrictions over the title of the Office's intangible assets. No intangible assets are pledged as security for liabilities.