10. Intangible assets
2017 2016
Opening balance, cumulative acq cost 94.0 95.1
Translation differences -1.9 -2.5
Additions 1.7 0.9
Disposals -0.0 -0.0
Reclassification between items 2.8 0.4
Closing balance, cumulative acq cost 96.5 94.0
Opening balance, cumulative depreciations -28.0 -26.1
Translation differences 0.2 0.2
Accumulated depreciation on disposals and reclassifications 0.0 0.0
Depreciation for the financial period -2.3 -2.1
Impairment losses -1.7 -
Closing balance, cumulative depreciations -31.8 -28.0
Intangible assets on 31 Dec. 64.8 66.0
The trademarks included in the Swedish business operations, carrying amount EUR 55.4 (57.1) million, are tested for impairment each year. The Group has estimated that their useful life is unlimited. These are well known trademarks with a long history, high business and profitability impact and it is expected to be so also in the future. Impairment test is made on the segment level and it covers all the segment’s assets, see detailed description in note 11. Remaining balance includes IT-software, other trademarks and connection fees. Impairment loss amounting to EUR 1.7 million was recorded in Denmark, see detailed information in note 11.