CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating activities:
Net loss	$ (19,360,853)	$ (11,065,842)	$ (11,803,719)
Reconciliation of net loss to cash used in operations:
Accretion/amortization of asset retirement obligations	85,181	121,183	155,943
Depreciation and depletion	556,993	727,245	899,738
Impairment of uranium properties	1,737,359	1,460,170	961,278
Decrease in restoration and reclamation accrual	(1,767,289)	(1,530,303)	(1,373,228)
Stock compensation expense	427,292	883,941	1,032,308
Other non-cash items, net	73,932	2,289	19,700
Effect of changes in operating working capital items:
(Increase) decrease in receivables	(148,465)	(77,092)	17,646
(Increase) decrease in prepaid and other current assets	(88,578)	13,722	(53,831)
Increase (decrease) in payables, accrued liabilities and deferred credits	(116,223)	(802,560)	1,334,939
Net cash used in operating activities	(18,600,651)	(10,267,247)	(8,809,226)
Cash flows from investing activities:
(Increase) decrease in certificates of deposit, restricted	161,834	(2,042,428)	(551,366)
Additions to uranium properties	(1,278,745)	(455,850)	(365,385)
Acquisition of Neutron Energy, Inc.	(3,677,133)
Net cash used in investing activities	(4,794,044)	(2,498,278)	(916,751)
Cash flows from financing activities:
Proceeds from notes payable	5,000,000
Payments on borrowings	(95,664)	(83,539)	(117,710)
Issuance of common stock, net	20,264,692	352,855	19,138,091
Net cash provided by financing activities	25,169,028	269,316	19,020,381
Net increase (decrease) in cash and cash equivalents	1,774,333	(12,496,209)	9,294,404
Cash and cash equivalents, beginning of year	2,890,263	15,386,472	6,092,068
Cash and cash equivalents, end of year	4,664,596	2,890,263	15,386,472
Cash paid during the year for :
Interest	14,100	19,000	25,400
Non-cash transactions:
Common stock issued to acquire Neutron Energy, Inc.	16,577,000
Common stock issuance for loan origination fees	160,000
Capital lease additions	106,200
Common stock issuance for deferred compensation		697,027
Restricted stock issued for services	39	17	28
Restricted stock issuance for cash conservation plan			$ 106,500