Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	6 Months Ended		37 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011
Cash flows from operating activities:
Net income (loss)	$ 46,557	$ (31,040)	$ (46,878)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	5,421	2,408	16,268
Accretion of asset retirement obligation	474	479	2,642
Deferred income tax benefit	(13,481)		(13,481)
Non-cash inventory write-downs	1,585	915	23,602
Non-cash share-based compensation expense	3,386	15,133	32,516
Impairment of fixed assets			3,114
Other operating adjustments	(113)	13	(170)
Increase (decrease) in cash, excluding the effects of acquisitions and dispositions, resulting from changes in:
Accounts receivable	(20,711)	444	(37,683)
Inventory	(12,593)	(366)	(36,462)
Prepaid expenses and other	(417)	(994)	(1,440)
Accounts payable	14,194	1,489	18,379
Asset retirement obligation	(339)	(304)	(1,358)
Accrued expenses	7,395	(2,931)	13,881
Net cash provided by/(used in) operating activities	31,358	(14,754)	(27,070)
Cash flows from investing activities:
Acquisition of the Mountain Pass facility			(82,150)
Cash paid in connection with acquisitions, net of cash acquired	(20,021)		(20,021)
Proceeds from sale of investment in joint venture			9,700
Deposits	10,700		(15,500)
Capital expenditures	(79,291)	(7,260)	(120,026)
Other assets	(33)		(144)
Proceeds from sale of assets		9	14
Net cash used in investing activities	(88,645)	(7,251)	(228,127)
Cash flows provided by financing activities:
Capital contributions from original stockholders		15,000	125,004
Repayments of short-term borrowings - related party	(1,688)		(2,795)
Repayments of debt	(2,958)		(2,958)
Net proceeds from sale of common stock in conjunction with the initial public offering			378,633
Net proceeds from sale of preferred stock	199,642		199,642
Net proceeds from sale of convertible notes	223,100		223,100
Payment of financing costs	(22)		(207)
Payment of preferred dividends	(3,320)		(3,320)
Proceeds from exercise of stock options		300	350
Proceeds from short-term borrowings - related party		5,008	11,645
Proceeds from debt	6,288		6,288
Net cash provided by financing activities	421,042	20,308	935,382
Effect of exchange rate changes on cash	97		97
Net change in cash and cash equivalents	363,852	(1,697)	680,282
Cash and cash equivalents at beginning of the period	316,430	6,929
Cash and cash equivalents at end of period	680,282	5,232	680,282
Supplemental disclosure of non-cash activities:
Change in accrued capital expenditures	34,540	1,126
Net cash paid for taxes	$ 505		$ 0