Basis of Preparation of Financial Statements (Details) (Velardena Properties)	12 Months Ended	3 Months Ended	1 Months Ended
	Dec. 31, 2014 item	Dec. 31, 2014 oz	Dec. 31, 2014 oz	Nov. 30, 2014 oz	Mar. 31, 2015
Basis of Preparation of Financial Statements
Interest acquired (as a percent)	100.00%	100.00%	100.00%
Number of exploration properties	30
Plant throughput (in tonnes per day)	264	264	264
Expected results
Basis of Preparation of Financial Statements
Expected plant throughput (in tonnes per day)					285
Silver
Basis of Preparation of Financial Statements
Average grade (in grams per tonne)	127	127	127	109
Metals sold (in ounces)		95
Gold
Basis of Preparation of Financial Statements
Average grade (in grams per tonne)	1.8	1.8	1.8	1.3
Metals sold (in ounces)		16,000
Silver Equivalent
Basis of Preparation of Financial Statements
Payable metals (in ounces)			31,000	12,000