SIGNIFICANT ACCOUNTING POLICIES - Depreciation (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Depreciation and amortization expense included in operations
Depreciation and amortization expense included in operations	$ 188,000	$ 165,000	$ 122,000
Depletion of mineral rights	$ 650,000	$ 614,000	$ 294,000