INVENTORIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2015
INVENTORIES
Ore on leach pads	$ 6,221	$ 7,150
In-process inventory	2,302	2,830
Stockpiles		1,923
Precious metals	2,403	1,820
Materials and supplies	1,478	1,252
Inventories	12,404	$ 14,975
Inventory write-down	$ 2,000