XML 50 R38.htm IDEA: XBRL DOCUMENT
v3.8.0.1

MARKETABLE SECURITIES (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Disclosure Of Detailed Information About Marketable Securities [Abstract] |
Disclosure of the movement in marketable securities |
| December 31, 2017 |  | December 31, 2016 |
| $ |  | $ |
Balance, beginning of year | 148,944 |  | 88,184 |
Additions | 5,295 |  | 7,329 |
Additions from the acquisition of Seabee Gold Operation (note 3) | — |  | 351 |
Disposals | (72,132 | ) | (5,327 | )
Fair value adjustments | 31,894 |  | 58,407 |
Balance, end of year | 114,001 |  | 148,944 |
Subsequent to the reporting date, we disposed of marketable securities for cash proceeds of $24,983,000.

X
- Definition Disclosure Of Detailed Information About Marketable Securities [Abstract] + References No definition available. + Details
Name: | ssrm_DisclosureOfDetailedInformationAboutMarketableSecuritiesAbstract
Namespace Prefix: | ssrm_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disclosure of the movement in marketable securities [Table Text Block] + References No definition available. + Details
Name: | ssrm_DisclosureofthemovementinmarketablesecuritiesTableTextBlock
Namespace Prefix: | ssrm_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration