Accounts Payable and Other Accrued Liabilities (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Accounts Payable and Other Accrued Liabilities
Accounts payable and accruals	$ 1,159,000	$ 717,000
Accrued employee compensation and benefits	716,000	648,000
Accounts payable and other accrued liabilities	1,875,000	1,365,000
Accrued vacation	200,000	100,000
Withholding taxes and benefits payable	500,000	500,000
Liabilities Pertaining to Corporate Administrative Activities [Member]
Accounts Payable and Other Accrued Liabilities
Accounts payable and accruals	500,000	200,000
Liabilities Pertaining to Exploration Activities [Member]
Accounts Payable and Other Accrued Liabilities
Accounts payable and accruals		100,000
Velardena Properties [Member]
Accounts Payable and Other Accrued Liabilities
Accounts payable and accruals	700,000	400,000
Accrued employee compensation and benefits	$ 200,000	$ 300,000