XML 76 R48.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Inventories (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Inventories [abstract] |
Schedule of Inventories |
﻿ |  |  |  |  |  |
﻿ |  |  | December 31, |  |  | December 31,
﻿ |  |  | 2017 |  |  | 2016
﻿Concentrate stockpiles |  | $ | 2,594 |  | $ | 1,285
﻿Ore stockpiles |  |  | 4,144 |  |  | 2,659
﻿Materials and supplies |  |  | 11,015 |  |  | 9,628
﻿Inventories |  | $ | 17,753 |  | $ | 13,572
﻿

X
- Definition Disclosure of detailed related to inventories explanatory [text block]. + References No definition available. + Details
Name: | fsm_DisclosureOfDetailedRelatedToInventoriesExplanatoryTextBlock
Namespace Prefix: | fsm_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Inventories [abstract]. + References No definition available. + Details
Name: | fsm_InventoriesAbstract
Namespace Prefix: | fsm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration