Document and Entity Information	12 Months Ended
Dec. 31, 2017 shares
Document And Entity Information
Entity Registrant Name	Americas Silver Corp
Entity Central Index Key	0001286973
Document Type	40-F
Document Period End Date	Dec. 31, 2017
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Is Entity's Reporting Status Current?	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding	41,496,950
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2017

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End date of current fiscal year in the format --MM-DD.

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The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word "Other".

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