CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Operating activities:
Net loss	$ (4,150,592)	$ (3,606,470)
Reconciliation of net loss to cash used in by operations-
Accretion/amortization of restoration reserve	97,435	23,119
Depreciation and depletion	121,878	148,206
Impairment of uranium properties	279,429	268,923
Decrease in restoration and reclamation accrual	(489,153)	(430,185)
Stock compensation expense	244,985	192,818
Other non-cash items, net		609
Effect of changes in operating working capital items-
(Increase) decrease in receivables	276,801	(280,911)
Increase in prepaid and other current assets	(21,534)	(12,952)
Increase (decrease) in payables, accrued liabilities and deferred credits	76,474	1,157,389
Net cash used in operations	(3,564,277)	(2,539,454)
Investing activities:
Increase in certificate of deposit, restricted	(5,632)	(36,474)
Increase in notes receivable		(917,457)
Additions to property, plant and equipment-
Net cash used in investing activities	(344,213)	(1,918,552)
Financing activities:
Payments on borrowings	(39,770)	(15,638)
Issuance of common stock, net	3,633,883	11,490,753
Net cash provided by financing activities	3,594,113	11,475,115
Net increase (decrease) in cash and cash equivalents	(314,377)	7,017,109
Cash and cash equivalents, beginning of period	4,664,596	2,890,263
Cash and cash equivalents, end of period	4,350,219	9,907,372
Non-cash transactions:
Issuance of common stock for short term loan principal and interest payments	5,095,833
Issuance of common stock for services	291,500
Issuance (Forfeiture) of restricted stock to employee	48	(16)
Kingsville Dome
Reconciliation of net loss to cash used in by operations-
Impairment of uranium properties	96,000	168,000
Additions to property, plant and equipment-
Additions to property, plant and equipment	(6,646)	(87,232)
Rosita/Rosita South
Additions to property, plant and equipment-
Additions to property, plant and equipment	(4,624)	(12,936)
Churchrock
Additions to property, plant and equipment-
Additions to property, plant and equipment	(48,042)	(547,120)
Crownpoint/Section 13 Drilling
Additions to property, plant and equipment-
Additions to property, plant and equipment	(41,486)	(155,964)
Juan Tafoya
Additions to property, plant and equipment-
Additions to property, plant and equipment	(72,148)
Other property
Additions to property, plant and equipment-
Additions to property, plant and equipment	$ (165,635)	$ (161,369)