XML 77 R49.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Derivative Assets and Derivative Liabilities (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Derivative Assets and Derivative Liabilities [abstract] |
Schedule of Derivative Assets and Liabilities |
﻿ |  |  |  |  |  |
﻿ |  |  | December 31, |  |  | December 31,
﻿Assets |  |  | 2017 |  |  | 2016
﻿Interest rate swap |  | $ | 140 |  | $ | -
﻿Commodity derivative contracts |  |  | - |  |  | 973
﻿Derivative assets |  | $ | 140 |  | $ | 973
﻿ |  |  |  |  |  |
﻿Liabilities |  |  |  |  |  |
﻿Interest rate swap |  | $ | - |  | $ | 254
﻿Commodity derivative contracts |  |  | 2,328 |  |  | -
﻿Derivative liabilities |  | $ | 2,328 |  | $ | 254
﻿
Schedule of Derivative Gain (Loss) Settled and Open Positions | The following table summarizes the gains (losses) from the settlement of and the open positions for the zinc and lead forward sales contracts as at December 3 1, 2017: ﻿
﻿ |  |  |  |  |  |
﻿ |  |  | December 31, |  |  | December 31,
﻿ |  |  | 2017 |  |  | 2016
﻿Realized |  |  |  |  |  |
﻿Zinc Contracts |  |  |  |  |  |
﻿Tonnes settled |  |  | 7,803 |  |  | -
﻿Average settlement price per tonne |  | $ | 2,894 |  | $ | -
﻿Settlement gains (losses) |  | $ | (1,521) |  | $ | -
﻿ |  |  |  |  |  |
﻿Lead Contracts |  |  |  |  |  |
﻿Tonnes settled |  |  | 4,465 |  |  | -
﻿Average settlement price per tonne |  | $ | 2,361 |  | $ | -
﻿Settlement gains (losses) |  | $ | 19 |  | $ | -
﻿ |  |  |  |  |  |
﻿Unrealized |  |  |  |  |  |
﻿Zinc Contracts |  |  |  |  |  |
﻿Open positions - tonnes |  |  | 6,500 |  |  | 7,803
﻿Price per tonne |  | $ | 2,500 - 3,190 |  | $ | 2,650 - 2,750
﻿Unrealized gains (losses) |  | $ | (2,957) |  | $ | 973
﻿ |  |  |  |  |  |
﻿Lead Contracts |  |  |  |  |  |
﻿Open positions - tonnes |  |  | 6,000 |  |  | -
﻿Price per tonne |  | $ | 2,100 - 2,689 |  | $ | -
﻿Unrealized gains (losses) |  | $ | (344) |  | $ | -
﻿

X
- Definition Derivative Assets and Derivative Liabilities [abstract]. + References No definition available. + Details
Name: | fsm_DerivativeAssetsAndDerivativeLiabilitiesAbstract
Namespace Prefix: | fsm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of derivative assets and derivative liabilities [text block]. + References No definition available. + Details
Name: | fsm_DisclosureOfDerivativeAssetsAndDerivativeLiabilitiesTextBlock
Namespace Prefix: | fsm_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of derivatives gain (loss) settled and open positions [text block]. + References No definition available. + Details
Name: | fsm_DisclosureOfDerivativesGainLossSettledAndOpenPositionsTextBlock
Namespace Prefix: | fsm_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration