XML 42 R11.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Changes in accounting policies and recent accounting pronouncements | 12 Months Ended
--- | ---
Dec. 31, 2017
Changes in accounting policies and recent accounting pronouncements [abstract] |
Changes in accounting policies and recent accounting pronouncements | 5. Changes in accounting policies and recent accounting pronouncements The following are future changes in accounting policies not yet effective as at December 31, 2017: (i) Financial instruments IFRS 9 - Financial Instruments - The standard was issued in its final version by the IASB in July 2014 bringing together the classification and measurement, impairment and hedge accounting phases of the IASB’s project to replace IAS 39, “Financial instruments: recognition and measurement” (“IAS 39”). The standard retains but simplifies the mixed measurement model and establishes two primary measurement categories for financial assets: amortized cost and fair value. The mandatory effective date of IFRS 9 would be annual periods beginning on or after January 1, 2018, with early adoption permitted. The Company completed assessing the impact of this standard and do not expect the Company’s consolidated financial statements to be significantly affected by IFRS 9. (ii) Revenue from contracts with customers IFRS 15 - Revenue from Contracts with Customers - The final standard on revenue from contracts with customers was issued in May 2014 and is effective for annual reporting periods beginning on or after January 1, 2018 for public entities with early adoption permitted. The standard covers principles that an entity shall apply to report useful information to users of financial statements about the nature, amount, timing, and uncertainty of revenue and cash flows arising from a contract with a customer. Entities have the option of using either a full retrospective or a modified retrospective approach to adopt the guidance. The Company completed assessing the impact of this standard and do not expect the Company’s consolidated financial statements to be significantly affected by IFRS 15. (iii) Leases IFRS 16 - Leases - The standard on leases was issued in January 2016 and is effective for annual reporting periods beginning on or after January 1, 2019 for public entities with early adoption permitted, provided IFRS 15 has been applied or is applied at the same date as IFRS 16. The standard requires lessees to recognize assets and liabilities for most leases. The Company is assessing the impact of this standard, along with timing of adoption of IFRS 16.

X
- Definition The entire disclosure for changes in accounting policies, accounting estimates and errors. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 8 -IssueDate 2017-01-01 -Section Accounting policies -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=8&date=2017-03-01&anchor=sect_Accountingpolicies&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_DisclosureOfChangesInAccountingPoliciesAccountingEstimatesAndErrorsExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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