Licenses and other intangible assets | |||
(in thousands) | |||
Cost: | |||
At January 1, 2015 | $ | 13,272 | |
Additions | 3,686 | ||
Disposals | — | ||
Exchange difference | (12 | ) | |
At December 31, 2015 | 16,946 | ||
Additions | 4,836 | ||
Disposals | (3,620 | ) | |
Exchange difference | (47 | ) | |
At December 31, 2016 | 18,115 | ||
Additions | 4,641 | ||
Disposals | (64 | ) | |
Exchange difference | 23 | ||
At December 31, 2017 | $ | 22,715 | |
Depreciation and impairment: | |||
At January 1, 2015 | 9,832 | ||
Amortization | 1,867 | ||
Disposals | — | ||
Exchange difference | (8 | ) | |
At December 31, 2015 | 11,691 | ||
Amortization | 2,215 | ||
Disposals | (3,468 | ) | |
Exchange difference | (30 | ) | |
At December 31, 2016 | 10,408 | ||
Amortization | 2,815 | ||
Disposals | (64 | ) | |
Exchange difference | (6 | ) | |
At December 31, 2017 | $ | 13,153 | |
Net book value: | |||
At January 1, 2015 | $ | 3,440 | |
At December 31, 2015 | 5,255 | ||
At December 31, 2016 | 7,707 | ||
At December 31, 2017 | $ | 9,562 | |