Federal Income Taxes - Schedule of Reconciliation of Expected Income Tax on Net Income at Statutory Rates (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Net loss	$ (19,605)	$ (15,143)
Statutory tax rate	34.00%	34.00%
Tax recovery at statutory rate	$ (6,666)	$ (5,149)
Foreign tax rate	97	(33)
Mineral property adjustments	9	(2,394)
Foreign deferred costs and other adjustments		(800)
Operating loss carryfoward adjustment	(10)	(5,488)
Nondeductible write-offs	1,250	96
Change in valuation allowance	5,320	13,768
Income tax expense (recovery)