COMMITMENTS AND CONTINGENCIES - Obligations Under Capital and Operating Leases (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Aug. 19, 2010
Obligations under capital and operating leases
Total expected payments for capital and operating lease over the next three years	$ 62,000
Period over which payments are due	3 years
Expected payments for capital and operating lease, current fiscal year	$ 62,000
Expected payments for capital and operating lease, 12 to 24 months	0
Expected payments for capital and operating lease, 24 to 36 months	$ 0
Eureka Moly LLC
Obligations under capital and operating leases
Sustainability Trust fund asset amount		$ 4,000,000