XML 90 R70.htm IDEA: XBRL DOCUMENT v3.10.0.1
Property, plant and equipment - Rollforward (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance $ 15,314  
Impairment loss   $ 284
Property, plant and equipment, ending balance 21,620 15,314
Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 62,834 61,875
Additions 10,025  
Additions   3,068
Disposals 2,712 1,589
Transfers   (600)
Effect of movements in exchange rates (34) 80
Property, plant and equipment, ending balance 70,113 62,834
Accumulated amortisation    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance (47,520) (46,174)
Depreciation 3,078 3,171
Impairment loss   284
Disposals (2,072) (1,589)
Transfers   (600)
Effect of movements in exchange rates (33) 80
Property, plant and equipment, ending balance (48,493) (47,520)
Building under finance lease    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 5,819  
Property, plant and equipment, ending balance 5,007 5,819
Building under finance lease | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 12,180 12,180
Additions 0  
Additions   0
Disposals 0 0
Transfers   0
Effect of movements in exchange rates 0 0
Property, plant and equipment, ending balance 12,180 12,180
Building under finance lease | Accumulated amortisation    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance (6,361) (5,549)
Depreciation 812 812
Impairment loss   0
Disposals 0 0
Transfers   0
Effect of movements in exchange rates 0 0
Property, plant and equipment, ending balance (7,173) (6,361)
Computer equipment    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 1,020  
Property, plant and equipment, ending balance 1,639 1,020
Computer equipment | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 4,787 4,607
Additions 1,016  
Additions   390
Disposals 215 169
Transfers   (54)
Effect of movements in exchange rates (4) 13
Property, plant and equipment, ending balance 5,584 4,787
Computer equipment | Accumulated amortisation    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance (3,767) (3,558)
Depreciation 383 365
Impairment loss   0
Disposals (200) (169)
Transfers   0
Effect of movements in exchange rates (5) 13
Property, plant and equipment, ending balance (3,945) (3,767)
Furniture and fixtures    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 155  
Property, plant and equipment, ending balance 67 155
Furniture and fixtures | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 1,190 1,163
Additions 6  
Additions   32
Disposals 87 17
Transfers   0
Effect of movements in exchange rates (6) 12
Property, plant and equipment, ending balance 1,103 1,190
Furniture and fixtures | Accumulated amortisation    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance (1,035) (978)
Depreciation 60 62
Impairment loss   0
Disposals (54) (17)
Transfers   0
Effect of movements in exchange rates (5) 12
Property, plant and equipment, ending balance (1,036) (1,035)
Leasehold improvements    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 1,624  
Property, plant and equipment, ending balance 1,019 1,624
Leasehold improvements | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 8,246 8,794
Additions 71  
Additions   7
Disposals 363 594
Transfers   0
Effect of movements in exchange rates (18) 39
Property, plant and equipment, ending balance 7,936 8,246
Leasehold improvements | Accumulated amortisation    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance (6,622) (6,606)
Depreciation 524 566
Impairment loss   0
Disposals (211) (594)
Transfers   0
Effect of movements in exchange rates (18) 44
Property, plant and equipment, ending balance (6,917) (6,622)
Production and test equipment    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 6,696  
Property, plant and equipment, ending balance 13,888 6,696
Production and test equipment | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 36,431 33,053
Additions 8,932  
Additions   2,639
Disposals 2,047 809
Transfers   1,532
Effect of movements in exchange rates (6) 16
Property, plant and equipment, ending balance 43,310 36,431
Production and test equipment | Accumulated amortisation    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance (29,735) (28,040)
Depreciation 1,299 1,366
Impairment loss   284
Disposals (1,607) (809)
Transfers   843
Effect of movements in exchange rates (5) 11
Property, plant and equipment, ending balance (29,422) (29,735)
Production and test equipment under finance lease | Cost    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance 0 2,078
Additions   0
Disposals   0
Transfers   (2,078)
Effect of movements in exchange rates   0
Property, plant and equipment, ending balance   0
Production and test equipment under finance lease | Accumulated amortisation    
Reconciliation of changes in property, plant and equipment [abstract]    
Property, plant and equipment, beginning balance $ 0 (1,443)
Depreciation   0
Impairment loss   0
Disposals   0
Transfers   (1,443)
Effect of movements in exchange rates   0
Property, plant and equipment, ending balance   $ 0