XML 64 R44.htm IDEA: XBRL DOCUMENT
v3.10.0.1

PROPERTY, PLANT AND EQUIPMENT (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2018
Property Plant And Equipment |
Property, plant and equipment |
|  | At December 31 |  | At December 31 |  | At January 1
(in thousands) |  | 2018 |  | 2017 |  | 2017
Plant and equipment: |  |  |  |  |  |
Cost | $ | 97,243 | $ | 96,762 | $ | 97,477
Construction-in-progress |  | 6,187 |  | 6,424 |  | 6,473
Accumulated depreciation |  | (24,086) |  | (20,516) |  | (16,930)
Net book value | $ | 79,344 | $ | 82,670 | $ | 87,020
Mineral properties: |  |  |  |  |  |
Cost | $ | 178,947 | $ | 166,332 | $ | 165,372
Net book value | $ | 178,947 | $ | 166,332 | $ | 165,372
Total Net book value | $ | 258,291 | $ | 249,002 | $ | 252,392
Plant and equipment continuity |
|  |  |  | Accumulated |  |
|  |  |  | Amortization / |  | Net
(in thousands) |  | Cost |  | Depreciation |  | Book Value
Plant and equipment: |  |  |  |  |  |
Balance-January 1, 2017 | $ | 103,950 | $ | (16,930) | $ | 87,020
Additions |  | 257 |  | - |  | 257
Amortization |  | - |  | (190) |  | (190)
Depreciation (note 23) |  | - |  | (4,371) |  | (4,371)
Disposals |  | (806) |  | 785 |  | (21)
Reclamation adjustment (note 16) |  | (215) |  | 190 |  | (25)
Balance-December 31, 2017 | $ | 103,186 | $ | (20,516) | $ | 82,670
Additions |  | 173 |  | - |  | 173
Amortization |  | - |  | (189) |  | (189)
Depreciation (note 23) |  | - |  | (3,661) |  | (3,661)
Disposals |  | (365) |  | 91 |  | (274)
Reclamation adjustment (note 16) |  | 436 |  | 189 |  | 625
Balance-December 31, 2018 | $ | 103,430 | $ | (24,086) | $ | 79,344
Mineral property continuity |
|  |  |  | Accumulated |  | Net
(in thousands) |  | Cost |  | Amortization |  | Book Value
Mineral properties: |  |  |  |  |  |
Balance-January 1, 2017 | $ | 165,372 | $ | - | $ | 165,372
Additions |  | 829 |  | - |  | 829
Impairment reversal |  | 331 |  | - |  | 331
Recoveries |  | (200) |  | - |  | (200)
Balance-December 31, 2017 | $ | 166,332 | $ | - | $ | 166,332
Additions |  | 18,923 |  | - |  | 18,923
Impairment expense |  | (6,086) |  | - |  | (6,086)
Recoveries |  | (222) |  | - |  | (222)
Balance-December 31, 2018 | $ | 178,947 | $ | - | $ | 178,947

X
- References No definition available. + Details
Name: | DNN_PropertyPlantAndEquipmentTablesAbstract
Namespace Prefix: | DNN_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | DNN_SummaryOfMineralPropertyContinuityTableTextBlock
Namespace Prefix: | DNN_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | DNN_SummaryOfPlantAndEquipmentContinuityTableTextBlock
Namespace Prefix: | DNN_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | DNN_SummaryOfPropertyPlantAndEquipmentTableTextBlock
Namespace Prefix: | DNN_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration