Molycorp (MCPIQ) 10-Q 5 Nov 14 2014 Q3 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	9 Months Ended
	Sep. 30, 2014	Nov. 04, 2014
Document and Entity Information [Abstract]	'	'
Entity Registrant Name	'Molycorp, Inc.	'
Entity Central Index Key	'0001489137	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-14	'
Amendment Flag	'false	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	244,774,819
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q3	'

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$313,477	$314,317
Trade accounts receivable, net	53,229	61,757
Inventory (Note 4)	166,936	171,783
Prepaid expenses and other current assets	27,175	29,210
Total current assets	560,817	577,067
Non-current assets:	'	'
Deposits	29,999	25,997
Property, plant and equipment, net (Note 5)	1,736,872	1,762,874
Inventory (Note 4)	25,530	25,329
Intangible assets, net	312,878	330,867
Investments	32,210	48,875
Goodwill	228,750	228,750
Other non-current assets	34,203	7,043
Total non-current assets	2,400,442	2,429,735
Total assets	2,961,259	3,006,802
Current liabilities:	'	'
Trade accounts payable	58,272	84,449
Accrued expenses	66,727	48,501
Debt and capital lease obligations (Note 6)	12,769	16,362
Other current liabilities	6,922	4,063
Total current liabilities	144,690	153,375
Non-current liabilities:	'	'
Asset retirement obligation	16,681	16,966
Deferred tax liabilities	75,162	85,481
Debt and capital lease obligations (Note 6)	1,582,802	1,363,916
Other non-current liabilities	14,286	10,002
Total non-current liabilities	1,688,931	1,476,365
Total liabilities	1,833,621	1,629,740
Commitments and contingencies (Note 11)	'	'
Stockholders’ equity:	'	'
Common stock, $0.001 par value; 700,000,000 shares authorized at September 30, 2014 and 350,000,000 at December 31, 2013 (Note 8)	245	241
Preferred stock, $0.001 par value; 5,000,000 shares authorized at December 31, 2013	0	2
Additional paid-in capital	2,232,390	2,194,405
Accumulated other comprehensive loss	-15,704	-6,451
Accumulated deficit	-1,115,614	-840,474
Total Molycorp stockholders’ equity	1,101,317	1,347,723
Noncontrolling interests	26,321	29,339
Total stockholders’ equity	1,127,638	1,377,062
Total liabilities and stockholders’ equity	$2,961,259	$3,006,802

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]	'	'
Common stock, par value	$0.00	$0.00
Common stock, authorized	700,000,000	350,000,000
Preferred stock, par value	'	$0.00
Preferred stock, authorized	'	5,000,000

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations and Comprehensive Loss (USD $)	3 Months Ended		9 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement [Abstract]	'	'	'	'
Revenues	$123,937	$149,066	$359,369	$430,580
Costs of sales:	'	'	'	'
Costs excluding depreciation and amortization	-119,633	-150,444	-358,506	-421,699
Depreciation and amortization	-19,382	-16,400	-55,608	-49,283
Gross loss	-15,078	-17,778	-54,745	-40,402
Operating expenses:	'	'	'	'
Selling, general and administrative	-21,907	-24,468	-60,286	-76,702
Depreciation, amortization and accretion	-8,093	-10,072	-22,552	-26,273
Research and development	-4,353	-5,565	-11,603	-18,476
Impairment of long-lived assets	0	-1,118	0	-1,495
Operating loss	-49,431	-59,001	-149,186	-163,348
Other (expenses) income:	'	'	'	'
Other (expense) income	-2,611	-891	-1,839	2,474
Impairment of investment (Note 17)	-12,000	0	-12,000	0
Interest expense, net of capitalized interest	-35,442	-16,289	-112,367	-42,807
Loss before income taxes and equity earnings	-99,484	-76,181	-275,392	-203,681
Income tax (expense) benefit	-3,572	12,902	5,762	38,922
Equity in loss of affiliates	-2,092	-2,334	-5,368	-8,690
Loss from continuing operations	-105,148	-65,613	-274,998	-173,449
Loss from discontinued operations, net of tax	0	-4,186	0	-5,190
Net loss	-105,148	-69,799	-274,998	-178,639
Net income attributable to noncontrolling interests	-31	-130	-142	-1,433
Net loss attributable to Molycorp stockholders	-105,179	-69,929	-275,140	-180,072
Net loss	-105,148	-69,799	-274,998	-178,639
Other comprehensive (loss) income:	'	'	'	'
Foreign currency translation adjustments	-8,292	4,217	-9,253	1,585
Comprehensive loss	-113,440	-65,582	-284,251	-177,054
Comprehensive loss attributable to:	'	'	'	'
Molycorp stockholders	-113,409	-65,452	-284,109	-175,621
Noncontrolling interest	-31	-130	-142	-1,433
Comprehensive loss	-113,440	-65,582	-284,251	-177,054
Loss per share of common stock (Note 9):	'	'	'	'
Net loss attributable to Molycorp stockholders	-105,179	-69,929	-275,140	-180,072
Dividends on Convertible Preferred Stock	0	-2,846	-2,846	-8,539
Loss attributable to common stockholders	($105,179)	($72,775)	($277,986)	($188,611)
Weighted average common shares outstanding—basic	224,270,303	168,114,266	223,300,073	163,222,000
Basic loss per share: (in dollars per share)	($0.47)	($0.43)	($1.24)	($1.16)
Weighted average common shares outstanding—diluted	224,270,303	168,114,266	223,300,073	163,222,000
Diluted loss per share: (in dollars per share)	($0.47)	($0.43)	($1.24)	($1.16)

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Stockholders' Equity (USD $)	Total	Total Molycorp Stockholders' Equity	Common Stock	Common Stock	Series A Mandatory Convertible Preferred Stock	Series A Mandatory Convertible Preferred Stock	Additional Paid-In Capital	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Accumulated deficit	Non controlling interests
In Thousands, except Share data, unless otherwise specified				Series A Mandatory Convertible Preferred Stock				Series A Mandatory Convertible Preferred Stock
Balance at beginning of period at Dec. 31, 2012	$1,251,258	$1,216,046	$139	'	$2	'	$1,691,429	'	($9,433)	($466,091)	$35,212
Balance at beginning of period (in shares) at Dec. 31, 2012	'	'	138,773,538	'	2,070,000	'	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity	'	'	'	'	'	'	'	'	'	'	'
Stock-based compensation (in shares)	'	'	43,847	'	'	'	'	'	'	'	'
Stock-based compensation	2,399	2,399	0	'	'	'	2,399	'	'	'	'
Component of 5.50% convertible debt	21,815	21,815	'	'	'	'	21,815	'	'	'	'
Deferred taxes on component of convertible debt	-8,508	-8,508	'	'	'	'	-8,508	'	'	'	'
Conversion of shares (in shares)	'	'	2,393	'	'	'	'	'	'	'	'
Conversion of shares	49	49	'	'	'	'	49	'	'	'	'
Conversion of Exchangeable Shares (in shares)	'	'	12,971	'	'	'	'	'	'	'	'
Issuance of Primary Shares (in shares)	'	'	43,125,000	'	'	'	'	'	'	'	'
Issuance of Primary Shares	248,140	248,140	43	'	'	'	248,097	'	'	'	'
Issuance of Borrowed Shares (in shares)	'	'	6,666,666	'	'	'	'	'	'	'	'
Issuance of Borrowed Shares	7	7	7	'	'	'	'	'	'	'	'
Net loss	-178,639	-180,072	'	'	'	'	'	'	'	-180,072	1,433
Preferred dividends	-8,539	-8,539	'	'	'	'	-8,539	'	'	'	'
Distribution to noncontrolling interests	-4,472	'	'	'	'	'	'	'	'	'	-4,472
Other comprehensive loss	1,585	1,585	'	'	'	'	'	'	1,585	'	'
Balance at end of period at Sep. 30, 2013	1,325,095	1,292,922	189	'	2	'	1,946,742	'	-7,848	-646,163	32,173
Balance at end of period (in shares) at Sep. 30, 2013	'	'	188,624,415	'	2,070,000	'	'	'	'	'	'
Balance at beginning of period at Dec. 31, 2013	1,377,062	1,347,723	241	'	2	'	2,194,405	'	-6,451	-840,474	29,339
Balance at beginning of period (in shares) at Dec. 31, 2013	'	'	240,380,094	'	2,070,000	'	'	'	'	'	'
Increase (Decrease) in Stockholders' Equity	'	'	'	'	'	'	'	'	'	'	'
Stock-based compensation (in shares)	'	'	229,664	'	'	'	'	'	'	'	'
Stock-based compensation	3,171	3,171	0	'	'	'	3,171	'	'	'	'
Conversion of shares (in shares)	'	'	3,225	4,140,000	'	-2,070,000	'	'	'	'	'
Conversion of shares	12	12	'	4	'	-2	12	-2	'	'	'
Conversion of Exchangeable Shares (in shares)	'	'	21,313	'	'	'	'	'	'	'	'
Share-lending arrangements (Note 8)	15,062	15,062	'	'	'	'	15,062	'	'	'	'
Warrants (Note 8)	23,164	23,164	'	'	'	'	23,164	'	'	'	'
Net loss	-274,998	-275,140	'	'	'	'	'	'	'	-275,140	142
Preferred dividends	-2,846	-2,846	'	'	'	'	-2,846	'	'	'	'
Distribution to noncontrolling interests	-3,170	'	'	'	'	'	'	'	'	'	-3,170
Other comprehensive loss	-9,253	-9,253	'	'	'	'	'	'	-9,253	'	'
Other	-566	-576	'	'	'	'	-576	'	'	'	10
Balance at end of period at Sep. 30, 2014	$1,127,638	$1,101,317	$245	'	$0	'	$2,232,390	'	($15,704)	($1,115,614)	$26,321
Balance at end of period (in shares) at Sep. 30, 2014	'	'	244,774,296	'	0	'	'	'	'	'	'

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:	'	'
Net loss	($274,998)	($178,639)
Adjustments to reconcile net loss to net cash from operating activities:	'	'
Depreciation, amortization and accretion	78,161	75,870
Deferred income tax benefit	-18,809	-36,399
Inventory write-downs	51,638	74,475
Release of inventory step-up value	742	5,650
Impairment of investment	12,000	0
Impairment of long-lived assets	0	4,949
Stock-based compensation	3,784	2,399
Equity in results of affiliates	5,368	8,690
Other operating adjustments	8,766	-1,796
Net change in operating assets and liabilities (Note 14)	-13,058	-45,212
Net cash used in operating activities	-146,406	-90,013
Cash flows from investing activities:	'	'
Investment in joint ventures	-703	-3,423
Capital expenditures	-62,837	-334,597
Recovery from insurance claims	12,900	0
Other investing activities	460	-364
Net cash used in investing activities	-50,180	-338,384
Cash flows from financing activities:	'	'
Repayments of debt	-5,879	-25,990
Net proceeds from sale of common stock	0	248,150
Issuance of 5.50% Convertible Notes	0	165,600
Debt issuance costs	-14,768	0
Proceeds from the Financings (Note 6)	250,000	0
Partial repayment of convertible notes (Note 6)	-27,495	0
Payments of preferred dividends	-2,846	-8,539
Dividend paid to noncontrolling interests	-3,170	-4,472
Other financing activities	1,626	-797
Net cash (used in) provided by financing activities	197,468	373,952
Effect of exchange rate changes on cash	-1,722	569
Net change in cash and cash equivalents	-840	-53,876
Cash and cash equivalents at beginning of the period	314,317	227,790
Cash and cash equivalents at end of period	313,477	173,914
Non-cash financing activities and investing activities:	'	'
Change in accrued capital expenditures	-15,649	-116,161
Fixed assets additions under capital lease	$1,470	$5,992

Basis_of_Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation
	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with GAAP for interim financial information and Regulation S-X promulgated under the Exchange Act, and reflect all adjustments that are normal and recurring in nature, which, in the opinion of management, are necessary for the fair presentation of our financial position, results of operations and cash flows at September 30, 2014, and for all periods presented. While the December 31, 2013 balance sheet information was derived from our audited financial statements, for interim periods, GAAP and Regulation S-X do not require all information and related disclosures that are required in the annual financial statements and, as a result, all disclosures required by GAAP and Regulation S-X for annual financial statements have not been included in this report. Therefore, the accompanying unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes for the year ended December 31, 2013 included in our Annual Report on Form 10-K filed with the SEC on March 3, 2014.
	The unaudited condensed consolidated financial statements include our accounts and the accounts of our wholly-owned and majority-owned subsidiaries. Intercompany balances and transactions have been eliminated on consolidation. Investments in joint ventures where we do not exert control, but have the ability to exercise significant influence over the operating and financial policies of the investee, are accounted for under the equity method of investment. All other investments are accounted for at cost.
	Use of Estimates
	The preparation of the financial statements, in accordance with GAAP, requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances. Actual results may differ significantly from these estimates under different assumptions and conditions. Significant estimates we made in the accompanying financial statements include the collectability of accounts receivable, the recoverability of inventory, the useful lives and recoverability of long-lived assets such as property, plant and equipment, intangible assets, goodwill and investments, capital leases, uncertain tax positions, the realizability of deferred tax assets, and the adequacy of the asset retirement obligation.
	Significant Accounting Policies
	A summary of our significant accounting policies can be found in Item 8, Note 2 of the audited consolidated financial statements for the year ended December 31, 2013 included in our Annual Report on Form 10-K filed with the SEC on March 3, 2014.
	Recent Accounting Pronouncements
	In August 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements - Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern. This update provides guidance about management’s responsibilities in evaluating an entity’s going concern uncertainties, and about the timing and content of related footnote disclosures. Under this amended guidance, an entity’s management should evaluate whether there are conditions or events, considered in the aggregate, that raise substantial doubt about the entity’s ability to continue as a going concern within one year after the date that the financial statements are issued (or within one year after the date that the financial statements are available to be issued when applicable). Management’s evaluation should be based on relevant conditions and events that are known and reasonably knowable at the date that the financial statements are issued (or at the date that the financial statements are available to be issued when applicable). Substantial doubt about an entity’s ability to continue as a going concern exists when relevant conditions and events, considered in the aggregate, indicate that it is probable that the entity will be unable to meet its obligations as they become due within one year after the date that the financial statements are issued (or available to be issued). The term probable is used consistently with its use in Topic 450, Contingencies. When management identifies conditions or events that raise substantial doubt about an entity’s ability to continue as a going concern, management should consider whether its plans that are intended to mitigate those relevant conditions or events will alleviate the substantial doubt. The mitigating effect of management’s plans should be considered only to the extent that (1) it is probable that the plans will be effectively implemented and, if so, (2) it is probable that the plans will mitigate the conditions or events that raise substantial doubt about the entity’s ability to continue as a going concern. If conditions or events raise substantial doubt about an entity’s ability to continue as a going concern, but the substantial doubt is alleviated as a result of consideration of management’s plans, the entity should disclose information that enables users of the financial statements to understand all of the following (or refer to similar information disclosed elsewhere in the footnotes):
	a. Principal conditions or events that raised substantial doubt about the entity’s ability to continue as a going concern (before consideration of management’s plans);
	b. Management’s evaluation of the significance of those conditions or events in relation to the entity’s ability to meet its obligations; and
	c. Management’s plans that alleviated substantial doubt about the entity’s ability to continue as a going concern.
	If conditions or events raise substantial doubt about an entity’s ability to continue as a going concern, and substantial doubt is not alleviated after consideration of management’s plans, an entity should include a statement in the footnotes indicating that there is substantial doubt about the entity’s ability to continue as a going concern within one year after the date that the financial statements are issued (or available to be issued). Additionally, the entity should disclose information that enables users of the financial statements to understand all of the following:
	a. Principal conditions or events that raise substantial doubt about the entity’s ability to continue as a going concern;
	b. Management’s evaluation of the significance of those conditions or events in relation to the entity’s ability to meet its obligations; and
	c. Management’s plans that are intended to mitigate the conditions or events that raise substantial doubt about the entity’s ability to continue as a going concern.
	This update is effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter. Early application is permitted.
	In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). The core principle of this new guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, an entity should apply the following steps:
	Step 1: Identify the contract(s) with a customer.
	Step 2: Identify the performance obligations in the contract.
	Step 3: Determine the transaction price.
	Step 4: Allocate the transaction price to the performance obligations in the contract.
	Step 5: Recognize revenue when (or as) the entity satisfies a performance obligation.
	The new guidance also specifies the accounting for some costs to obtain or fulfill a contract with a customer. An entity will be required to disclose sufficient qualitative and quantitative information to enable users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. For calendar-year public entities, the new guidance is effective starting in 2017, and interim periods within that year. Early adoption is not permitted. An entity should apply the amendments in this update using one of the following two methods:
	1	Retrospectively to each prior reporting period presented.
	2	Retrospectively with the cumulative effect of initially applying this update recognized at the date of initial application. If an entity elects this transition method, it also should provide the additional disclosures in reporting periods that include the date of initial application of:
	i.	The amount by which each financial statement line item is affected in the current reporting period by the application of this update as compared to the guidance that was in effect before the change.
	ii.	An explanation of the reasons for significant changes.
	We are in the process of evaluating which of the two methods we will apply to adopt the amendments, and whether this new guidance will have a material impact on our financial statements and related disclosures.

Liquidity_and_Capital_Requirem

Liquidity and Capital Requirements	9 Months Ended
	Sep. 30, 2014
Capital Requirements [Abstract]	'
Liquidity and Capital Requirements	'
	Liquidity and Capital Requirements
	We expect to use our cash balances of $313.5 million as of September 30, 2014, as well as cash generated from operations in certain business units to fund our capital expenditures, debt service and other cash requirements as we continue the ramp-up and optimization of production at our Mountain Pass facility. Capital expenditures for our Mountain Pass facility are expected to total approximately $25.0 million for the remainder of 2014, including remaining payments for certain capital expenditures incurred as of September 30, 2014, and $30.0 million in 2015. Additionally, we expect to spend approximately $5.0 million for the remainder of 2014 and $30.0 million in 2015 on maintenance and expansion capital expenditures across all other business units.
	In August 2014, we and certain of our subsidiaries entered into a commitment letter with Oaktree Capital Management, L.P. (collectively with certain of its affiliates and funds under its management, "Oaktree") pursuant to which Oaktree agreed to provide to us and certain of our subsidiaries up to approximately $400.0 million in secured financing through credit facilities and the sale and leaseback of certain equipment at our Mountain Pass facility (the "Financings") for corporate, operating and capital expenditures purposes. On September 11, 2014, we executed agreements governing the Financings and received initial gross proceeds totaling $250.0 million from Oaktree, with the remaining $149.8 million available to be drawn until April 30, 2016, $134.8 million of which is available only if we achieve certain financial and operational performance targets. For more information, see Note 6 below.
	The amount of our cash requirements continues to be dependent on (i) the accuracy of our cost estimates for capital expenditures, (ii) our ability to ramp-up run rates at our Mountain Pass facility pursuant to our expectations without further delays, and to achieve lower cash costs of production as a result of further optimization of operations at our Mountain Pass facility, (iii) stable or improved market conditions, (iv) our ability to sell our production of rare earths to external customers and our downstream facilities (including our ability to sell our cerium through market acceptance of SorbX® or otherwise), (v) our ability to repatriate cash generated from our global operations, and (vi) the absence of payments on current and future contingent liabilities. If these assumptions prove inaccurate, our estimates could prove incorrect and we may need additional financing.
	As part of our cash management procedures, we continue to evaluate opportunities to reduce our operating, administrative and interest costs. Additionally, we may from time to time seek to repurchase our outstanding debt securities with cash and/or exchanges for common stock or securities convertible into common stock.

Segment_Information

Segment Information	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Segment Information	'
	Segment Information
	Our operations are organized into four reportable segments, each reflecting a unique combination of product lines and technologies: Resources, Chemicals and Oxides, Magnetic Materials and Alloys, and Rare Metals. The primary measurement we use to measure the financial performance of each reportable segment is OIBDA (Operating income before depreciation, amortization and accretion).
	Three months ended September 30, 2014	Resources			Chemicals and Oxides			Magnetic Materials and Alloys			Rare Metals			Corporate and other (a)			Eliminations(b)			Total Molycorp, Inc.
		(In thousands)
	Revenues:
	External	$	4,509		$	36,814		$	61,345		$	21,269					$	—		$	123,937
	Inter-segment	9,424			6,658			1,342			—						(17,424		)	—
	Total revenues	$	13,933		$	43,472		$	62,687		$	21,269					$	(17,424	)	$	123,937
	OIBDA	$	(31,087	)	$	4,251		$	13,715		$	595
	Depreciation, amortization and accretion	(17,332		)	(3,823		)	(4,232		)	(2,034		)
	Operating (loss) income	$	(48,419	)	$	428		$	9,483		$	(1,439	)	$	(9,065	)	$	(419	)	$	(49,431	)
	Other expense																			(2,611		)
	Impairment of investment																			(12,000		)
	Interest expense, net of capitalized interest																			(35,442		)
	Loss before income taxes and equity earnings																			$	(99,484	)
	Three months ended September 30, 2013	Resources			Chemicals and Oxides			Magnetic Materials and Alloys			Rare Metals			Corporate and other (a)			Eliminations(b)			Total Molycorp, Inc.
		(In thousands)
	Revenues:
	External	$	4,655		$	50,791		$	72,626		$	20,994					—			$	149,066
	Inter-segment	8,858			7,174			—			—						(16,032		)	—
	Total revenues	$	13,513		$	57,965		$	72,626		$	20,994					$	(16,032	)	$	149,066
	OIBDA	$	(44,673	)	$	4,561		$	18,520		$	(911	)
	Depreciation, amortization and accretion	(10,853		)	(5,960		)	(7,458		)	(2,144		)
	Operating (loss) income	$	(55,526	)	$	(1,399	)	$	11,062		$	(3,055	)	$	(10,806	)	$	723		$	(59,001	)
	Other expense																			(891		)
	Interest expense, net of capitalized interest																			(16,289		)
	Loss before income taxes and equity earnings																			$	(76,181	)
	Nine months ended September 30, 2014	Resources			Chemicals and Oxides			Magnetic Materials and Alloys			Rare Metals			Corporate and other (a)			Eliminations(b)			Total Molycorp, Inc.
		(In thousands)
	Revenues:
	External	$	9,951		$	122,521		$	169,260		$	57,637					$	—		$	359,369
	Inter-segment	29,582			16,138			3,725			—						(49,445		)	—
	Total revenues	$	39,533		$	138,659		$	172,985		$	57,637					$	(49,445	)	$	359,369
	OIBDA	$	(97,831	)	$	12,388		$	39,203		$	1,265
	Depreciation, amortization and accretion	(47,432		)	(11,605		)	(12,730		)	(6,228		)
	Operating (loss) income	$	(145,263	)	$	783		$	26,473		$	(4,963	)	$	(25,259	)	$	(957	)	$	(149,186	)
	Other expense																			(1,839		)
	Impairment of investment																			(12,000		)
	Interest expense, net of capitalized interest																			(112,367		)
	Loss before income taxes and equity earnings																			$	(275,392	)
	Nine months ended September 30, 2013	Resources			Chemicals and Oxides			Magnetic Materials and Alloys			Rare Metals			Corporate and other (a)			Eliminations(b)			Total Molycorp, Inc.
		(In thousands)
	Revenues:
	External	$	30,235		$	135,180		$	193,417		$	71,748					$	—		$	430,580
	Inter-segment	18,168			28,476			—			—						(46,644		)	—
	Total revenues	$	48,403		$	163,656		$	193,417		$	71,748					$	(46,644	)	$	430,580
	OIBDA	$	(104,519	)	$	(2,792	)	$	48,823		$	3,947
	Depreciation, amortization and accretion	(31,536		)	(17,087		)	(20,360		)	(6,402		)
	Operating (loss) income	$	(136,055	)	$	(19,879	)	$	28,463		$	(2,455	)	$	(32,321	)	$	(1,101	)	$	(163,348	)
	Other income																			2,474
	Interest expense, net of capitalized interest																			(42,807		)
	Loss before income taxes and equity earnings																			$	(203,681	)
	a.	Includes business development costs, personnel costs, stock-based compensation, accounting and legal fees, occupancy expense, information technology costs and interest expense.
	b.	Consist of inter-segment sales and gross profits eliminations as well as eliminations of lower of cost or market adjustments related to inter-segment inventory.

Inventory

Inventory	9 Months Ended
	Sep. 30, 2014
Inventory Disclosure [Abstract]	'
Inventory	'
	Inventory
	At September 30, 2014 and December 31, 2013, our inventory consisted of the following:
		September 30,		December 31,
		2014		2013
		(In thousands)
	Current:
	Concentrate stockpiles	$	—	$	24
	Raw materials	52,215		42,627
	Work in process	25,254		41,962
	Finished goods	62,397		65,662
	Materials and supplies	27,070		21,508
	Total current	$	166,936	$	171,783
	Long-term:
	Concentrate stockpiles	$	—	$	4
	Raw materials	25,530		25,325
	Total long-term	$	25,530	$	25,329
	The following table presents charges to costs of sales related to our assessment of normal production levels and write-downs of inventory:
		Three Months Ended September 30,				Nine Months Ended September 30,
		2014		2013		2014		2013
		(In thousands)
	Abnormal production costs expensed in the period (a)	$	28,889	$	18,249	$	71,436	$	65,743
	Write-down to the lower of cost or market (b)	14,776		19,633		50,296		60,733
	Write-downs of stockpile inventory (c)	—		6,884		1,342		13,741
	Total	$	43,665	$	44,766	$	123,074	$	140,217
	(a)	Relates to production costs that would have been inventoriable had we been operating at normal production levels. In all periods presented, the majority of these production costs related to the Resources segment.
	(b)	Due to the decline in some rare earths prices and low inventory turnover.
	(c)	Adjustments of the estimated REO content in the stockpile at the Resources segment.

Property_Plant_and_Equipment_n

Property, Plant and Equipment, net	9 Months Ended
	Sep. 30, 2014
Property, Plant and Equipment [Abstract]	'
Property, Plant and Equipment, net	'
	Property, Plant and Equipment, net
	We capitalized expenditures of $17.8 million and $47.3 million for the three and nine months ended September 30, 2014, respectively, and $83.0 million and $281.3 million for the three and nine months ended September 30, 2013, respectively. The majority of these capital expenditures related to the expansion and modernization efforts, and certain other capital projects, at our Mountain Pass facility (Resources segment). Starting in 2014, we no longer capitalized interest because the construction of our Mountain Pass facility was substantially complete at the beginning of the year. For the three and nine months ended September 30, 2013, we capitalized interest of $20.3 million and $61.2 million, respectively. In prior periods, capitalized interest was added to "Construction in progress" until the asset was complete and ready for its intended use. Subsequently, capitalized interest was allocated to the pertinent asset class, such as "Land improvements", "Building and improvements" or "Plant and equipment", and amortized over the estimated useful life of the asset.
	At September 30, 2014 and December 31, 2013, our property, plant and equipment consisted of the following:
		September 30,			December 31,
		2014			2013
		(In thousands)
	Land	$	12,045		$	12,822
	Land improvements	304,659			327,029
	Buildings and improvements	609,337			418,510
	Plant and equipment	509,562			288,603
	Vehicles	2,982			2,986
	Computer software	12,573			12,424
	Furniture and fixtures	1,196			1,044
	Construction in progress (a)	394,572			755,107
	Natural gas delivery facility under capital lease	15,658			15,658
	Mining equipment under capital lease	10,982			7,370
	Mineral properties	23,757			23,999
	Property, plant and equipment at cost	1,897,323			1,865,552
	Less accumulated depreciation	(160,451		)	(102,678		)
	Property, plant and equipment, net	$	1,736,872		$	1,762,874
	(a)	Primarily related to expenditures at the Mountain Pass facility.
	Mineral properties and development costs, which are referred to collectively as mineral properties, include acquisition costs, drilling costs, and the cost of other development work associated with our Mountain Pass facility, all of which are capitalized.

Debt_and_Capital_Lease_Obligat

Debt and Capital Lease Obligations	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Debt and Capital Lease Obligations	'
	Debt and Capital Lease Obligations
	The following table provides a summary of the current and non-current portions of our debt outstanding and capital lease obligations at September 30, 2014 and December 31, 2013:
		September 30, 2014								December 31, 2013
		Current				Non-Current				Current				Non-Current
		(In thousands)
	Bank loans due May 2014 - September 2017	$	9,609			$	1,486			$	14,128			$	2,699
	3.25% Convertible Notes, net of discount, due June 2016	—				191,743				—				207,028
	6.00% Convertible Notes, net of discount, due September 2017	—				355,614				—				346,708
	5.00% Debentures, net of discount, due December 2017	—				2,129				—				2,493
	5.50% Convertible Notes, net of discount, due February 2018	—				152,084				—				148,198
	12.00% Term Loans, due September 2019	—				96,595				—				—
	12.00% Equipment Financing, due September 2019	—				124,583				—				—
	10% Senior Notes, net of discount, due June 2020	—				638,521				—				637,435
	Total debt	9,609				1,562,755				14,128				1,344,561
	Capital lease obligations	3,160				20,047				2,234				19,355
	Total debt and capital lease obligations	$	12,769			$	1,582,802			$	16,362			$	1,363,916
	Weighted average interest rate on the bank loans was 3.43% and 3.59% at September 30, 2014 and December 31, 2013, respectively. Scheduled minimum debt repayments, excluding capital lease obligations, were as follows at September 30, 2014:
		September 30, 2014
	Debt maturities, excluding capital leases	(In thousands)
	Remainder of 2014	2,040
	2015	7,997
	2016	207,331
	2017	412,573
	2018	172,500
	Thereafter	971,154
	Total	1,773,595
	As of September 30, 2014, we were in compliance with all applicable covenants related to our indebtedness.
	12% Term Loans and 12% Equipment Financing
	On September 11, 2014 (the “closing date”), we received initial gross proceeds totaling $250.0 million from the Financings with Oaktree, with the remaining $149.8 million available to be drawn until April 30, 2016, $134.8 million of which is available only if we satisfy certain financial and operational conditions. Net proceeds from the Financings were approximately $207.7 million after the repayment of approximately $23.5 million of principal amount (plus accrued interest) and $4.0 million of principal amount (plus accrued interest) of our 3.25% Convertible Notes and 6.00% Convertible Notes, respectively, owned by Oaktree (“Oaktree Notes Repurchase”), $8.0 million paid to Oaktree as a commitment yield enhancement, and the payment of transaction costs of approximately $6.6 million as of the closing date. We will be responsible for additional incurred but unpaid transaction costs in respect of the Financings after the closing date. As a result of the Oaktree Notes Repurchase, we recognized a loss on extinguishment of $2.3 million under "Other expense" in the statements of operations and comprehensive loss for the three and nine months ended September 30, 2014. This loss was calculated as the difference between the reacquisition price and the net carrying amount of our convertible notes.
	The Financings consist of two term loans and one equipment financing, as follows:
	a.	A term loan facility of $185.0 million (the “Parent Term Loan”), $50.2 million of which was advanced on the closing date and $134.8 million is available to be drawn in the minimum amount of $50.0 million at any time until April 30, 2016, subject to the satisfaction of certain conditions, including (i) consolidated adjusted EBITDA of no less than $20.0 million for each of two consecutive fiscal quarters, and (ii) evidence that production at our Mountain Pass facility is equal to or greater than 4,000 mt for each of two consecutive fiscal quarters, in each case prior to, but including, the fiscal quarter ending on March 31, 2016. Proceeds from the Parent Term Loan have been and will be used for capital expenditures, interest expense and general corporate purposes, including the Oaktree Notes Repurchase and the payment of transaction expenses.
	b.	A term loan facility of $75.0 million (the “Magnequench Term Loan”), $60.0 million of which was advanced on the closing date and $15.0 million of delayed draw term loans to be advanced, subject to the satisfaction of certain conditions, in minimum amounts of $5.0 million after the closing date and until April 30, 2016. Proceeds from the Magnequench Term Loan will be used to satisfy certain intercompany obligations of Magnequench, Inc. and to make certain intercompany loans.
	Interest rates on the Parent Term Loan and the Magnequench Term Loan (collectively, the “Term Loans”) are: (i) from the closing date through June 14, 2016, 7.00% per year payable in cash and 5.00% per year payable in kind (“PIK interest”) and (ii) from June 15, 2016, and thereafter, 12.00% per year payable in cash, unless our 3.25% Convertible Notes have been repaid in full with the proceeds of the sale of our common equity or by the exchange of such convertible notes for our common equity, or any combination thereof (the “2016 Notes Equity Refinancing”), in which case, interest will accrue as indicated in (i) above. The daily average unused amount of the delayed draw Term Loans commitment for the Term Loans is subject to an unused commitment enhancement payment of 1.00% per year.
	The Term Loans mature on September 11, 2019, with springing maturity dates at (i) April 30, 2016, if we have not repaid, escrowed or extended an amount of cash sufficient to repay when due and payable the 3.25% Convertible Notes down to $40.0 million in the aggregate and (ii) March 31, 2017, if we have not repaid or escrowed an amount of cash sufficient to repay when due and payable (a) our 6.00% Convertible Notes down to $80.0 million in the aggregate and (b) our 5.50% Convertible Notes down to $40.0 million in the aggregate.
	We cannot make any voluntary prepayments on the Term Loans prior to the fourth anniversary of the closing date. In addition, any prepayment of the loans and any repayment (or other satisfaction) of the loans after acceleration, but prior to September 11, 2019, will be subject to an early payment premium of (i) 43.8% of the principal amount so prepaid if paid prior to the first anniversary of the closing date, (ii) 33.7% of the principal amount so prepaid if paid on or after the first anniversary of the closing date but prior to the second anniversary of the closing date, (iii) 23.0% of the principal amount so prepaid if paid on or after the second anniversary of the closing date but prior to the third anniversary of the closing date, (iv) 11.5% of the principal amount so prepaid if paid on or after the third anniversary of the closing date but prior to the fourth anniversary of the closing date, and (vi) 3.0% of the principal amount so prepaid if paid on or after the fourth anniversary of the closing date. Any mandatory prepayment of the loans resulting from an asset sale will be subject to an early payment premium of 3.0% of the principal amount so prepaid.
	The springing maturity dates, in combination with the early payment premiums applicable to any prepayment of the loans described above, meet the definition of a derivative that is required to be bifurcated from its host debt instrument. Because this derivative is to be classified as a liability, we recognized a discount on the Term Loans as of the closing date of approximately $1.7 million, in the aggregate, which will be amortized to interest expense over the duration of the Term Loans. See Note 15 for more information on this derivative.
	c.	A Purchase and Sale Agreement pursuant to which we sold certain equipment including, but not limited to, parts of our natural gas powered co-generation power plant, the Chlor-Alkali facility and the water treatment plant (collectively, the “Equipment”), located at our Mountain Pass facility. In exchange for the sale of the Equipment, we received proceeds of $139.8 million that have been and will be used for the development and improvement of the Equipment and other assets at our Mountain Pass facility, and may be used, to the extent permitted under our 10% Senior Notes indenture and the Parent Term Loan, for interest payments and other general corporate purposes.
	Concurrently with entering into the Purchase and Sale Agreement, we and Oaktree entered into an Equipment Lease Agreement, which we refer to as the "Equipment Financing", whereby we leased back all of the Equipment. The Equipment Financing has a five-year term with the following approximate annual rent payments (due quarterly in arrears): $10.1 million in the first year, $10.7 million in the second year, $11.2 million in the third year, $11.8 million in the fourth year and $12.4 million in the fifth year with an additional payment of approximately $179.9 million on the fifth anniversary of the lease commencement date (“Base Rent Payments”); provided, that unless the 2016 Notes Equity Refinancing, as defined above, has occurred by June 15, 2016, the rent will be adjusted to require annual payments of $18.0 million for years two through five and a payment of approximately $147.0 million on the fifth anniversary of the lease commencement date. Base Rent Payments on the Equipment Financing are based on a 7% annual rate applied to the unpaid principal balance plus accrued, but unpaid interest calculated at an annual rate of 5%.
	Due to the existence of several forms of our continuing involvement with the Equipment, we are required to account for the Equipment Financing as a direct financing under GAAP, rather than a sale-leaseback. Additionally, since the rent payments do not cover the total interest expense of the Equipment Financing, we recognize such payments as interest only with no principal reduction of the financing obligation. However, the unpaid interest calculated at an annual rate of 5% increases the financing obligation up to the final payment due on the fifth anniversary of the Equipment Financing, whether or not the 2016 Notes Equity Refinancing occurs.
	In connection with the Financings, we issued warrants to Oaktree to purchase up to an aggregate of 24,477,359 shares of our common stock. For accounting purposes, a portion of the proceeds from the Financings was allocated to the warrants, which created a discount on the Term Loans and the Equipment Financing of approximately $28.2 million, in the aggregate. This discount will be recognized as interest expense over the term of the Financings. See Note 8 and Note 15 for more information on the warrants.
	The following table presents a reconciliation of the principal amount to the net carrying value of the Term Loans and the Equipment Financing at September 30, 2014:
		12.00% Term Loans				12.00% Equipment Financing
		September 30,				September 30,
		2014				2014
		(In thousands)
	Principal amount (a)	$	110,473			$	140,069
	Unamortized debt discount	(13,878		)		(15,486		)
	Net carrying amount	$	96,595			$	124,583
	(a) Includes PIK interest accretion.
	Obligations under the Financings are guaranteed by us and certain of our subsidiaries (the “Pari Passu Guarantors”) that also guarantee the obligations under our 10% Senior Notes. Our obligations and those of the Pari Passu Guarantors under the Financings are secured by a pari passu lien on substantially all of our assets and the assets of the Pari Passu Guarantors (the “Pari Passu Collateral”) on an equal and ratable basis with the obligations under the 10% Senior Notes. The maximum principal amount of debt under the Financings secured by the Pari Passu Collateral shall not exceed $300.0 million in the aggregate at any time or such higher amount permitted by the Pari Passu Indenture. In addition, the obligations under the Financings are guaranteed by certain of our other subsidiaries (the “First Priority Guarantors”). The obligations of the First Priority Guarantors under the Financings are secured by a first priority lien on certain equity interests owned by the First Priority Guarantors, including equity interests of certain foreign subsidiaries. In addition, the Magnequench Credit Agreement is secured by a first priority lien on substantially all of the assets of Magnequench, Inc.
	Convertible Notes and Senior Secured Obligations
	The following table presents a reconciliation of the principal amount to the net carrying value for each of our Convertible Notes and our Senior Notes at September 30, 2014 and December 31, 2013, and provides the interest cost of each instrument for the three and nine months ended September 30, 2014 and 2013:
		3.25% Convertible Notes							6.00% Convertible Notes							5.50% Convertible Notes						10% Senior Notes
		September 30,			December 31,				September 30,			December 31,				September 30,			December 31,			September 30,			December 31,
		2014			2013				2014			2013				2014			2013			2014			2013
		(In thousands)
	Principal amount	$	206,505		$	230,000			$	410,000		$	414,000			$	172,500		172,500			$	650,000		$	650,000
	Unamortized debt discount	(14,762		)	(22,972		)		(54,386		)	(67,292		)		(20,416		)	(24,302		)	(11,479		)	(12,565		)
	Net carrying amount	$	191,743		$	207,028			$	355,614		$	346,708			$	152,084		148,198			$	638,521		$	637,435
	Interest cost (a)
		Three Months Ended September 30,
		2014			2013				2014			2013				2014			2013			2014			2013
		$	3,935		$	3,988			$	10,710		$	9,969			$	3,711		$	3,609		$	16,658		$	16,622
	Nine Months Ended September 30,
	2014			2013				2014			2013				2014			2013			2014			2013
	$	12,063		$	11,839			$	31,135		$	29,691			$	11,046		$	9,482		$	49,942		$	49,837
(a) Interest cost includes the coupon interest, accretion of the initial equity component of the convertible notes (3.25% - $36,227; 6.00% - $68,695; and 5.50% - $21,815), accretion of the underwriting discounts and amortization of the issuance costs allocated to the liability component.
The 10% Senior Notes are our senior secured obligations and are guaranteed by certain of our domestic subsidiaries ("Guarantors"). The Senior Notes are secured by a first-priority security interest on substantially all of our property and assets and those of the Guarantors, subject to some exceptions for certain "Excluded Assets," such as:
•	Leasehold interests in real property;
•	Certain capital leases that constitute permitted liens;
•	Certain motor vehicles;
•	Assets owned by foreign subsidiaries or, subject to certain limitations, MMA;
•	Assets with a fair market value of less than $15.0 million as to which the board of directors determine in good faith (and certify to the collateral agent) that the costs of obtaining or perfecting such security interest are excessive in relation to the practical benefit to the holder of the Notes of the security afforded thereby (based on the value of such asset);
•	Cash collateral for letters of credit or hedging obligations (up to 105% of the underlying obligations);
•	Certain deposit accounts;
•	The equity interests of immaterial subsidiaries and, subject to certain limitations, MMA;
•	Voting stock of foreign subsidiaries in excess of 65.0% of the voting stock; and
•	Other pledges of stock of a guarantor to the extent that Rule 3-16 of Regulation S-X under the Securities Act would require the filing of separate financial statements of such guarantor.
Capital Leases
We lease certain mining and other equipment under agreements with various durations that have been determined to be capital leases. Those agreements contain purchase options at the end of the lease term and are generally at market interest rates.
At September 30, 2014, total future minimum payments on our capital leases were as follows:
	September 30, 2014
Capital Leases	(In thousands)
Remainder of 2014	2,069
2015	8,278
2016	8,278
2017	7,161
2018	5,770
Thereafter	18,195
Total	49,751

Income_Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	Our effective income tax rate can vary significantly quarter-to-quarter for various reasons, including the mix and volume of business in lower tax jurisdictions, in jurisdictions with tax holidays and tax incentives, and in jurisdictions for which no deferred tax assets have been recognized because management believed it was not more likely than not that future taxable profit would be available against which tax losses and deductible temporary differences could be utilized. Our effective income tax rate can also vary due to the impact of foreign exchange fluctuations, operating losses, changes in our provisions related to tax uncertainties, and changes in our assertion relating to indefinitely reinvesting undistributed earnings of certain foreign subsidiaries.
	For the three and nine months ended September 30, 2014, our effective tax rates were (3.6)% and 2.1%, respectively, as compared to 16.9% and 19.1% for the three and nine months ended September 30, 2013, respectively. The September 30, 2014 effective tax rates were impacted primarily by the valuation allowance required in the United States. In addition, a $9.6 million discrete income tax benefit has been recognized during the second quarter of 2014 in the United States to offset the increase in deferred tax liabilities from an out-of-period adjustment related to the revised fair value of our share-lending arrangements described in Note 8 below.

Stockholders_Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2014
Equity [Abstract]	'
Stockholders' Equity	'
	Stockholders’ Equity
	At September 30, 2014 and December 31, 2013, we had 244,864,742 and 240,380,138 shares of common stock issued and outstanding, respectively. At December 31, 2013, we also had 2,070,000 shares of our 5.50% Series A Mandatory Convertible Preferred Stock (“Convertible Preferred Stock”) issued and outstanding.
	Warrants
	On September 11, 2014, as part of the Financings, we issued warrants to Oaktree to purchase up to an aggregate of 18,358,019 shares of our common stock (the “Penny Warrants”) with an exercise price of $0.01 per share, and warrants to purchase up to an aggregate of 6,119,340 shares of our common stock with an exercise price of $2.04 per share (the “Strike Warrants”, and collectively with the Penny Warrants the “Warrants”). The Warrants may be exercised at any time until September 11, 2019. The Warrants are subject to a lock up that prevents any registered holder to trade any option to purchase or sell shares of our common stock, or transfer or dispose of any shares of our common stock issued or issuable upon exercise of the Warrants for a period of 90 days after the closing date. Each Warrant may be exercised by Oaktree or any registered holder of the Warrant on either a cash basis (i.e., physical exercise) or on a “cashless basis” by surrendering such Warrant for a net number of shares of our common stock. With respect to the exercise of any Warrant on a “cashless basis”, the number of shares of our common stock to be surrendered is equal to the quotient obtained by dividing (x) the product of the number of shares of our common stock underlying such Warrant or any portion thereof being exercised (at the election of the registered holder), multiplied by the difference between the Fair Market Value and the warrant price by (y) the Fair Market Value. Fair Market Value means the average last sale price of a share of our common stock for the ten trading days ending on the third trading day prior to the date on which notice of exercise of such Warrant is sent to Computershare Inc. and Computershare Trust Company, N.A. The exercise price and the number of shares of our common stock issuable upon exercise of the Warrant Shares are subject to customary anti-dilution adjustments for stock splits, stock dividends and recapitalizations of our common stock. Subject to certain exceptions, including the issuance of shares of our common stock or other equity awards pursuant to our equity compensation plans, if we issue common stock (or common stock equivalents) at a purchase price less than the then-current exercise price of the Strike Warrants, the exercise price of the Strike Warrants will be subject to (i) full-ratchet anti-dilution protection for the first two-year period of the Strike Warrants and (ii) weighted-average anti-dilution protection for the remaining three-year period of the Strike Warrants.
	The Penny Warrants meet the criteria for the equity classification and were recorded at a fair value of approximately $24.7 million, net of issuance costs, in "Additional paid-in capital" in the condensed consolidated statements of stockholders' equity. The Strike Warrants, instead, were classified as a derivative liability because the exercise price may be adjusted for the issuance of additional shares of our common stock under certain circumstances. See Note 15 for more information on the Strike Warrants.
	The fair value of the Warrants was determined using an option-pricing model with the following inputs:
		Penny Warrants			Strike Warrants
	Term (years)	5			5
	Stock price	$	1.55		$	1.55
	Strike price	$	0.01		$	2.04
	Risk-free interest rate	1.79		%	1.79		%
	Volatility	82.6		%	49.9		%
	Dividend yield	—		%	—		%
	Since the unit of account for the Penny Warrants is our common stock, the volatility is based on the average of historical and implied volatility. For the Strike Warrants, we applied a "Volatility Haircut" based on certain studies supporting that market participants would generally apply a discount to the full observed historical or implied volatility for an option on the stock.
	In addition, in order to account for the restriction on the marketability of the shares of common stock issuable upon exercise of the Warrants for a 90-day period from the closing day, we applied a Discount for Lack Of Marketability (“DLOM”) to the fair value of each Warrant obtained from the option-pricing model. The DLOM was obtained using an option-based approach that estimates a discount as an average strike put option, effectively assuming that if the shares of common stock were available to be traded, the holder could sell the shares evenly over the restriction period. In particular, for the Penny Warrants, we discounted the fair value from the option-pricing model by a DLOM of 9%, which resulted into a fair market value of $1.40 per Penny Warrant, whereas for the Strike Warrants we discounted the fair value by a DLOM of 31% to arrive to a fair market value of $0.57 per Strike Warrant.
	Conversion of Preferred Stock
	On March 1, 2014, each share of our Convertible Preferred Stock automatically converted into two shares of our common stock based on the “maximum conversion rate”, as defined in our Amended and Restated Certificate of Incorporation. As a result, we issued 4,140,000 shares of our common stock in connection with the automatic conversion of the 2,070,000 shares of the Convertible Preferred Stock. Also on March 1, 2014, we paid the final $2.8 million of the aggregate preferred dividends on the Convertible Preferred Stock to holders of record at the close of business on February 15, 2014.
	Share-lending arrangements
	In August 2012, in order to facilitate the offering of our 6.00% Convertible Notes due September 2017, we entered into a share-lending arrangement with Morgan Stanley Capital Services LLC (“MSCS”), an affiliate of Morgan Stanley & Co. LLC, under which we agreed to loan 13,800,000 shares of our common stock to MSCS (the “2012 Borrowed Shares”). In January 2013, in order to facilitate the offering of our 5.50% Convertible Notes due February 2018, we entered into another share-lending arrangement with MSCS, under which we agreed to loan 6,666,666 shares of our common stock (the “2013 Borrowed Shares”, and collectively with the 2012 Borrowed Shares, the “Borrowed Shares”). We received no proceeds and no collateral for the Borrowed Shares, but a nominal lending fee from MSCS for the use of these loaned shares. Given the aggregate lending fees, no further consideration was given to the accounting treatment of the share-lending arrangements. For corporate law purposes, the Borrowed Shares are issued and outstanding. However, based on certain contractual undertakings of MSCS in the share-lending arrangements that have the effect of substantially eliminating the economic dilution that otherwise would result from the issuance of the Borrowed Shares, these loaned shares are not considered outstanding for the purpose of computing and reporting our earnings per share. The Borrowed Shares are to be returned to Molycorp concurrently with the maturity of the related convertible notes.
	During the second quarter of 2014, the SEC issued Molycorp a comment letter with respect to our Annual Report on Form 10-K for the fiscal year ended December 31, 2013 regarding, among other things, the fair value measurement of our share-lending arrangements. In response to the SEC’s comment, we reconsidered our approach to determining the fair value of our share-lending arrangements and identified a methodology to estimate the long-term borrowing rate of our common stock, which we adjusted for the credit risk of the counterparty given that no collateral was provided to us that complied with ASC 470-20-25-20A. As a result of applying the methodology, management has determined that the fair value at the date of issuance of the 2012 Borrowed Shares and 2013 Borrowed Shares should have been approximately $18.1 million and $6.6 million, respectively. These amounts should have been recognized in the financial statements as issuance costs associated with the issuance of the related convertible notes with an offset to additional paid-in capital.
	Because the adjustment, both individually and in the aggregate, was not material to any of the prior years’ financial statements, and the impact of correcting the errors was not material to the full year 2014 financial statements, we recorded the correction in the condensed consolidated financial statements in the second quarter of 2014. The out-of-period adjustment had the following impact on the condensed consolidated balance sheet and the condensed consolidated statements of operations and comprehensive loss:
	Increase to balance sheet captions:	As of June 30, 2014
	Other non-current assets	$	16,381
	Property, plant and equipment, net	3,378
	Additional paid-in capital	15,062
	Increase to statements of operations and comprehensive loss captions:	Three Months Ended
		June 30, 2014
	Interest expense, net of capitalized interest	$	4,933
	Income tax benefit	9,630
	The following table provides certain other information on our share-lending arrangements as of September 30, 2014:
		2012 Borrowed Shares			2013 Borrowed Shares			Total
		(In thousands)
	Fair value	$	3,001		$	1,686		$	4,687
	Unamortized issuance cost	10,624			4,505			15,129
	The methodology to fair value our share-lending arrangements consists of an option pricing model that we used to determine a synthetic cost for borrowing our common stock, which we then adjusted for an estimate of the counterparty credit risk. Inputs used in this approach include a combination of Level 2 and Level 3 inputs of the fair value hierarchy. As of September 30, 2014, all of the Borrowed Shares we originally agreed to loan to MSCS are still outstanding, and the related unamortized issuance cost is included in "Other non-current assets" in the condensed consolidated balance sheet.
	The amount of non-cash interest cost recognized relating to the amortization of the issuance cost associated with the combined share-lending arrangements was as follows in 2014:
		Three Months Ended			Nine Months Ended
		September 30, 2014			September 30, 2014
		(In thousands)
	Interest cost expensed	$	1,250		$	6,183
	Interest cost capitalized	—			3,378
	Accumulated other comprehensive income
	The following table provides the changes in Accumulated other comprehensive income (loss) (“AOCI”) for the nine-month periods ended September 30, 2014 and 2013:
		Foreign currency translation adjustments			Postretirement benefit liability			Accumulated other comprehensive loss
		(In thousands)
	Balance at December 31, 2013	$	(6,638	)	$	187		$	(6,451	)
	Change in other comprehensive loss before reclassifications	(9,253		)	—			(9,253		)
	Net income (loss) reclassified from AOCI	—			—			—
	Balance at September 30, 2014	$	(15,891	)	$	187		$	(15,704	)
		Foreign currency translation adjustments			Postretirement benefit liability			Accumulated other comprehensive loss
		(In thousands)
	Balance at December 31, 2012	$	(8,261	)	$	(1,172	)	$	(9,433	)
	Change in other comprehensive loss before reclassifications	1,585			—			1,585
	Net income (loss) reclassified from AOCI	—			—			—
	Balance at September 30, 2013	$	(6,676	)	$	(1,172	)	$	(7,848	)
	There were no items reclassified from AOCI during the interim periods presented above.

Loss_per_Share

Loss per Share	9 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Loss per Share	'
	Loss per Share
	For the nine months ended September 30, 2014 and for the three and nine months ended September 30, 2013, the dividends on the Convertible Preferred Stock were subtracted from net loss attributable to Molycorp stockholders for the purpose of computing the basic and diluted earnings per share.
	Diluted earnings per share reflect the dilutive impact of potential common stock and unvested restricted shares of common stock in the weighted average number of common shares outstanding during the period, if dilutive. For this purpose, the “treasury stock method” and “if-converted method,” as applicable, are used. Under the treasury stock method, assumed proceeds upon the exercise of stock options are considered to be used to purchase common stock at the average market price of the shares during the period. Also under the treasury stock method, fixed awards and non-vested shares, such as restricted stock units, are deemed options for purposes of computing diluted earnings per share. At September 30, 2014 and 2013, all potential common stock under the treasury stock method were antidilutive in nature; consequently, we did not have any adjustments between earnings per share and diluted earnings per share related to stock options and restricted stock units. In applying the if-converted method, conversion is not assumed for purposes of computing diluted earnings per share if the effect would be antidilutive. Convertible preferred stock is antidilutive whenever the amount of the dividend declared in or accumulated for the current period per common share obtainable on conversion, including the deemed dividend in the period from a beneficial conversion feature, exceeds basic earnings per share. Our Convertible Preferred Stock was antidilutive at September 30, 2014 and 2013. Also, under the if-converted method, convertible debt is antidilutive whenever its interest per common share obtainable on conversion, including any deemed interest from a beneficial conversion feature and nondiscretionary adjustments, net of tax, exceeds basic earnings per share. At September 30, 2014 and 2013, our convertible notes were all antidilutive.
	Included in the basic and diluted loss per share for the three and nine months ended September 30, 2013 are losses from discontinued operations of $0.02 and $0.03, respectively, related to an asset disposal that we finalized in the first quarter of 2014.

StockBased_Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock-Based Compensation	'
	Stock-Based Compensation
	The following tables summarize the stock-based awards with significant activity for the nine months ended September 30, 2014:
	PBRSUs	Number of		Weighted Average
		Shares		Grant-Date
				Price
	Unvested at December 31, 2013	697,797		$	7.45
	Granted	755,283		$	5.1
	Forfeited	(9,052	)	5.45
	Vested	—		—
	Unvested at September 30, 2014	1,444,028		$	6.19
	RSUs	Number of		Weighted Average
		Shares		Grant-Date
				Price
	Unvested at December 31, 2013	1,076,385		$	9.81
	Granted	750,289		$	4.22
	Forfeited	(64,123	)	$	8.84
	Vested	(60,196	)	$	26.85
	Unvested at September 30, 2014	1,702,355		$	6.78

Commitments_and_Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Commitments and Contingencies
	(a)	Future Operating Lease Commitments
	We lease certain office space, trailers and equipment pursuant to lease agreements that have been determined to be operating leases. Remaining annual minimum payments under these leases at September 30, 2014 were as follows:
		Total		Less Than		1 - 3 Years		4 - 5 Years		More Than
				1 Year						5 Years
		(In thousands)
	Operating lease obligations	$	5,846	$	2,113	$	2,396	$	498	$	839
	(b)	Purchase Commitments
	We entered into contractual commitments for the purchase of materials and services from various vendors, primarily in connection with the modernization and expansion efforts at our Mountain Pass facility. Future payments for all purchase commitments at September 30, 2014 were as follows:
		Total		Less Than		1 - 3 Years		4 - 5 Years		More Than
				1 Year						5 Years
		(In thousands)
	Purchase obligations and other commitments	$	75,804	$	75,804	$	—	$	—	$	—
	(c)	Purported Class Action and Derivative Lawsuits
	In February 2012, a purported class action lawsuit was filed in the Colorado Federal District Court against us and certain of our current and former executive officers alleging violations of the federal securities laws. The Consolidated Class Action Complaint filed on July 31, 2012 also names most of our Board members and some of our stockholders as defendants, along with other persons and entities. That Complaint alleges 18 claims for relief arising out of alleged: (1) securities fraud in violation of the Securities Exchange Act of 1934, or the Exchange Act, during the proposed class period from February 11, 2011 through November 10, 2011; and (2) materially untrue or misleading statements in registration statements and prospectuses for our public offering of preferred stock in February 2011 and of common stock in June 2011, in violation of the Securities Act of 1933. Our motion to dismiss that Complaint was filed in October 2012 and is pending. We believe that this lawsuit is without merit, and we intend to vigorously defend ourselves against these claims.
	Certain of our shareholders filed a consolidated stockholder derivative lawsuit purportedly on our behalf against us (as nominal defendant) and certain of our current and former directors, executive officers and shareholders in the Delaware Court of Chancery. A Consolidated Amended Stockholder Derivative Complaint was filed in August 2012. Pursuant to an order dated May 15, 2013, the Delaware Chancery Court stayed this derivative lawsuit pending the outcome of the Colorado class action lawsuit. On October 9, 2013, certain plaintiffs, purportedly on our behalf, filed a Motion to Lift the Stay and for Leave to File an Amended Complaint. Pursuant to a letter opinion dated May 12, 2014, the Delaware Chancery Court granted plaintiffs’ motion to file a second consolidated amended derivative complaint. In addition, the Delaware Chancery Court lifted the stay of the action. The plaintiffs filed their Second Consolidated Amended Complaint on May 15, 2014, alleging breaches of fiduciary duty and unjust enrichment, but dropping claims for material misstatements and for trading on material, non-public information. The defendants filed a Motion to Dismiss the Second Consolidated Amended Complaint on July 14, 2014. Oral arguments on the Motion to Dismiss are scheduled on January 16, 2015.
	Two additional shareholder derivative lawsuits were filed purportedly on our behalf against us (as nominal defendant) and certain of our current and former directors, executive officers and shareholders, in the Colorado Federal District Court. These lawsuits allege claims for breach of fiduciary duty, waste of corporate assets, and unjust enrichment based on events in 2011 and 2012. The Colorado Federal District Court dismissed these lawsuits. The plaintiffs filed an appeal of that ruling to the U.S. Court of Appeals for the Tenth Circuit, and the Tenth Circuit remanded these cases back to the Colorado Federal District Court. Subsequently, a different shareholder, purportedly on our behalf, filed a new shareholder derivative lawsuit in the Colorado Federal District Court alleging claims for breach of fiduciary duty, waste of corporate assets, and unjust enrichment based on events during 2011 through 2013. The Colorado Federal District Court sua sponte consolidated this lawsuit with the remanded lawsuits. The plaintiff in the new derivative lawsuit filed a Motion to Vacate the consolidation order. On July 15, 2014, the Colorado Federal District Court ruled that, based on the Second Consolidated Amended Derivative Complaint filed in Delaware Chancery Court, the issues raised in the Colorado derivative cases were sufficiently distinct from the issues set forth in the Delaware derivative lawsuit, and reversed its original order dismissing the lawsuits. In its order, the Colorado Federal District Court left open the opportunity for the defendants to file a motion to stay the Colorado derivative lawsuits pending the resolution of the Colorado class action lawsuit. The Motion to Stay has been fully briefed and is pending. The Motion to Vacate the consolidation order remains pending.
	In August 2013, two purported class action lawsuits were filed in the U.S. District Court for the Southern District of New York against us and certain of our current and former executive officers, alleging violations of the federal securities laws. A Consolidated Amended Class Action Complaint, filed on May 19, 2014, also names us and certain of our current and former executive officers. The Consolidated Amended Class Action Complaint alleges claims for relief arising out of alleged securities fraud in violation of the Exchange Act, during a purported class period from February 21, 2012 through October 15, 2013. Our Motion to Dismiss the consolidated lawsuit was filed on August 13, 2014. We believe that this lawsuit is without merit, and we intend to vigorously defend ourselves against these claims.
	The class action and derivative lawsuits described above have not progressed to a point where a reasonably possible range of losses associated with their ultimate outcome can be estimated at this time. If the final resolution of any such litigation or proceedings is unfavorable, our financial condition, operating results and cash flows could be materially affected.

Concentrations

Concentrations	9 Months Ended
	Sep. 30, 2014
Risks and Uncertainties [Abstract]	'
Concentrations	'
	Concentrations
	Resources Segment
	There were no significant sales by customer or by product at the Resources segment for the three and nine months ended September 30, 2014, and for the three and nine months ended September 30, 2013.
	Chemicals and Oxides Segment
	Sales of cerium products within the Chemicals and Oxides segment accounted for 12% and 8% of consolidated revenues in the third quarter of 2014 and 2013, respectively, and 11% and 10% for the nine months ended September 30, 2014 and 2013, respectively. There were no significant sales by customer in this segment in all interim periods indicated above.
	Magnetic Materials and Alloys Segment
	Sales of Neo Powders™ within the Magnetic Materials and Alloys segment, relative to consolidated revenues, were 45% and 45% for the three months ended September 30, 2014 and 2013, respectively, and 45% and 40% for the nine months ended September 30, 2014 and 2013, respectively.
	Sales of Neo Powders™ to Daido Electronics, a subsidiary of one of IMJ’s shareholders, totaled $18.6 million and $16.3 million for the three months ended September 30, 2014 and 2013, respectively, and $45.8 million and $39.2 million for the nine months ended September 30, 2014 and 2013, respectively. At September 30, 2014 and December 31, 2013, we had accounts receivable from Daido Electronics of $6.3 million and $7.5 million, respectively.
	Rare Metals Segment
	There were no significant sales by product or by customer at the Rare Metals segment for the three and nine months ended September 30, 2014 and the three and nine months ended September 30, 2013.

RelatedParty_Transactions

Related-Party Transactions	9 Months Ended
	Sep. 30, 2014
Related Party Transactions [Abstract]	'
Related-Party Transactions	'
	Related-Party Transactions
	We supply Neo Powders™ to Daido Electronics, a subsidiary of one of IMJ’s shareholders, and to Toda Magnequench Magnetic Materials Co. Ltd. (“TMT”), an equity method investee of ours involved in the production of rare earth magnetic compounds. We also purchase magnetic compounds back from TMT in the normal course of business. Two other equity method investees, with whom we regularly buy and sell products, include Ganzhou Keli Rare Earth New Material Co., Ltd. (“Keli”), which processes rare earth oxides into metals for inclusion in our Neo Powders™, and Ingal Stade GmbH, which sells gallium to our rare metals facilities located in Canada and the United States. In addition, we provide rare metal recycling services to Plansee Holding AG, a privately held Austrian company that is wholly-owned by an Austrian trust, of which one of our Board's directors and other members of his family are beneficiaries.
	For the three and nine months ended September 30, 2014, we purchased metals and received services from Keli for a total of $15.0 million and $50.6 million, respectively, as compared to $20.4 million and $44.8 million for the three and nine months ended September 30, 2013, respectively.
	Except for Daido Electronics, which is disclosed in Note 12, transactions with all other related parties were nominal in all interim periods indicated above.

Net_Change_in_Operating_Assets

Net Change in Operating Assets and Liabilities	9 Months Ended
	Sep. 30, 2014
Net Change in Operating Assets and Liabilities	'
Net Change in Operating Assets and Liabilities	'
	Net Change in Operating Assets and Liabilities
	Net change in operating assets and liabilities, net of the effects of acquisitions and dispositions, consisted of the following for the nine months ended September 30, 2014 and 2013:
		Nine Months Ended September 30,
		2014			2013
		(In thousands)
	Decrease (increase) in operating assets:
	Trade accounts receivable	$	8,301		$	(5,557	)
	Inventory	(50,057		)	26,816
	Prepaid expenses and other current assets	(3,368		)	(1,085		)
	Increase (decrease) in operating liabilities:
	Trade accounts payable	(10,641		)	(16,642		)
	Income tax payable	2,346			(8,768		)
	Interest payable	30,467			(26,765		)
	Asset retirement obligation	(1,415		)	(2,385		)
	Accrued expenses	11,309			(10,826		)
		$	(13,058	)	$	(45,212	)

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value of Financial Instruments	'
	Fair Value of Financial Instruments
	For assets and liabilities that are required under GAAP to be measured at fair value on a recurring or nonrecurring basis, we refer to a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value into the following three broad levels:
	•	Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities.
	•	Level 2 - Observable inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly, including quoted prices for similar assets and liabilities in active markets; quoted prices for identical or similar assets and liabilities in markets that are not active; or other inputs that are observable or can be corroborated by observable market data by correlation or other means.
	•	Level 3 - Prices or valuation techniques requiring inputs that are both significant to the fair value measurement and unobservable.
	Our assets and liabilities measured at fair value on a recurring basis were as follows at September 30, 2014 and December 31, 2013:
		30-Sep-14
		Quoted Prices in Active Markets for Identical Assets/Liabilities		Significant Other Observable Inputs		Significant Unobservable Inputs
		(Level 1)		(Level 2)		(Level 3)
		(In thousands)
	Assets:
	Cash equivalents	$	212,728	—		—
	Liabilities:
	Derivative liabilities:
	Springing Maturity on Term Loans	—		—		$	1,694
	Strike Warrants	—		—		$	2,510
	Share Purchase Agreement	—		—		$	6,057
		31-Dec-13
		Quoted Prices in Active Markets for Identical Assets/Liabilities		Significant Other Observable Inputs		Significant Unobservable Inputs
		(Level 1)		(Level 2)		(Level 3)
		(In thousands)
	Assets:
	Cash equivalents	$	179,052	—		—
	Liabilities:
	Derivative liability - Share Purchase Agreement	—		—		$	6,089
	The financial assets classified in Level 1 at September 30, 2014 and December 31, 2013 consist of money market funds valued based on quoted prices for identical assets in active markets.
	The Springing Maturity on Term Loans is a derivative liability bifurcated from the Term Loans issued on September 11, 2014 in conjunction with the Financings described in Note 6. The technique used to fair value the Springing Maturity on Term Loans is the income approach based on a discounted cash flow model using significant unobservable inputs, including a probability factor of 5% representing the likelihood that the springing maturity dates would be triggered. There was no change in fair value of the Springing Maturity on Term Loans during the three and nine months ended September 30, 2014.
	The Strike Warrants were issued on September 11, 2014 in conjunction with the Financings described in Note 6. The change in fair value of the Strike Warrants resulted in a gain of approximately $1.0 million for the three and nine months ended September 30, 2014, which was recognized in "Interest expense" in the condensed consolidated statements of operations and comprehensive income. The technique used to fair value the Strike Warrants is the income approach based on a discounted cash flow model using significant unobservable inputs. See Note 8 for more information on the inputs and technique used to fair value the Strike Warrants.
	The share purchase agreement (“SPA”) relates to a contract between NMT Holding GmbH, our wholly-owned German subsidiary, and the shareholders of Buss & Buss, a majority-owned subsidiary of ours. The SPA includes a call and a put option on shares of the remaining shareholder and his legal successors. If the call option is exercised by us, a premium is added to the consideration to purchase the underlying shares in Buss & Buss. If the put option is exercised by the remaining shareholder of Buss & Buss or his legal successors, a discount will reduce the cost basis of the securities sold to us. We account for the put option at fair value with changes in fair value recognized currently in earnings. The change in fair value of the put option resulted in nominal unrealized gains and losses for the three and nine months ended September 30, 2014, and for the three and nine months ended September 30, 2013, which were recognized in "Interest expense" in the condensed consolidated statements of operations and comprehensive income. The technique used to fair value the SPA is the income approach based on a discounted cash flow model using significant unobservable inputs.
	The fair value of our derivative liabilities is recorded in "Other long-term liabilities" in the balance sheets as of September 30, 2014 and December 31, 2013.
	The following table presents the fair value of publicly traded financial liabilities we reported at their carrying value at September 30, 2014 and December 31, 2013:
		30-Sep-14					31-Dec-13
		Carrying Value		Fair Value			Carrying Value		Fair Value
		(In thousands)
	Long-term debt
	3.25% Convertible Notes due June 2016	$	191,743	$	128,033		$	207,028	$	161,771
	6.00% Convertible Notes due September 2017	355,614		139,400			346,708		312,570
	5.50% Convertible Notes due February 2018	152,084		61,422			148,198		164,015
	10% Senior Notes due June 2020	638,521		448,500			637,435		646,750
	Total long-term debt	$	1,337,962	$	777,355		$	1,339,369	$	1,285,106
	On September 11, 2014, as part of the Financings we repurchased approximately $23.5 million aggregate principal amount of our 3.25% Convertible Notes and $4.0 million on our 6.00% Convertible Notes. See Note 6 for more information.
	The carrying value of the financial liabilities listed above is comprised of the principal amount reduced by the unamortized underwriting discount and unamortized issuance costs. In addition, for each of our convertible notes the principal amount is further reduced by the unamortized discount representing the value of the respective equity components at issuance. See Note 6 for more information.
	The fair value of the financial liabilities listed above, which are all classified in Level 1, is based on the last available market trade of each reporting period. Our Debentures, Term Loans and Equipment Financings are not actively traded, and the difference between their carrying value and fair value is impractical to estimate. The carrying amount of certain other financial instruments, such as trade accounts receivables, trade accounts payable, accrued expenses, bank loans and capital lease obligations approximate fair value and, therefore, have been excluded from the table above.

Subsidiary_Guarantor_Financial

Subsidiary Guarantor Financial Information	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Subsidiary Guarantor Financial Information	'
	Subsidiary Guarantor Financial Information
	The Senior Notes are fully, unconditionally and jointly and severally guaranteed by all of Molycorp, Inc.'s 100% owned existing and future domestic material subsidiaries, as defined in the indenture governing the Senior Notes. The Senior Notes guarantee of a guarantor will automatically terminate, and the obligations of such guarantor under the Senior Notes guarantee will be unconditionally released and discharged, upon (all terms as defined in the indenture governing the Senior Notes):
	-1	any sale, exchange, transfer or other disposition of a majority of the capital stock of (including by way of consolidation or merger) such guarantor by Molycorp or any restricted subsidiary to any person or persons, as a result of which such guarantor is no longer a direct or indirect subsidiary of Molycorp;
	-2	any sale, exchange, transfer or other disposition of all or substantially all assets of such guarantor that results in such guarantor having no assets;
	-3	the designation by Molycorp of such guarantor as an unrestricted subsidiary; or
	-4	defeasance or discharge of the Senior Notes;
	provided that any such event occurs in accordance with all other applicable provisions of the indenture.
	Presented below are the condensed consolidating financial statements of Molycorp, Inc. (“Parent”) as issuer, its combined guarantor subsidiaries and its combined non-guarantor subsidiaries, which are presented as an alternative to providing separate financial statements for the guarantors. The accounts of the Parent, the guarantor and non-guarantor subsidiaries are presented using the equity method of accounting for investments in subsidiaries for purposes of these condensed consolidating financial statements only. Certain of the prior periods separate financial information has been reclassified to conform to the presentation of the most recent period herein disclosed.
		30-Sep-14
		(In thousands)
	Condensed Consolidating Balance Sheets	Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Molycorp, Inc. consolidated
	Current assets:
	Cash and cash equivalents	$	209,255		$	8,399		$	95,823		$	—		$	313,477
	Trade accounts receivable, net	—			4,360			48,869			—			53,229
	Inventory	—			34,217			132,719			—			166,936
	Prepaid expenses and other current assets	—			15,028			12,147			—			27,175
	Total current assets	209,255			62,004			289,558			—			560,817
	Non-current assets:
	Deposits	1,756			28,243			—			—			29,999
	Property, plant and equipment, net	—			1,607,027			129,845			—			1,736,872
	Inventory	—			25,530			—			—			25,530
	Intangible assets, net	—			393			312,485			—			312,878
	Investments	—			17,016			15,194			—			32,210
	Goodwill	—			—			228,750			—			228,750
	Investments in consolidated subsidiaries	340,620			117,098			—			(457,718		)	—
	Intercompany accounts receivable	1,943,181			—			117,941			(2,061,122		)	—
	Other non-current assets	17,701			7,929			8,573			—			34,203
	Total non-current assets	2,303,258			1,803,236			812,788			(2,518,840		)	2,400,442
	Total assets	$	2,512,513		$	1,865,240		$	1,102,346		$	(2,518,840	)	$	2,961,259
	Current liabilities:
	Trade accounts payable	$	—		$	30,434		$	27,838		$	—		$	58,272
	Accrued expenses	25,048			18,159			23,520			—			66,727
	Debt and capital lease obligations	—			3,160			9,609			—			12,769
	Other current liabilities	—			352			6,570			—			6,922
	Total current liabilities	25,048			52,105			67,537			—			144,690
	Non-current liabilities:
	Asset retirement obligation	—			16,681			—			—			16,681
	Deferred tax liabilities	—			—			75,162			—			75,162
	Debt and capital lease obligations	1,381,945			144,638			56,219			—			1,582,802
	Intercompany accounts payable	—			2,061,122			—			(2,061,122		)	—
	Other non-current liabilities	4,203			1,414			8,669			—			14,286
	Total non-current liabilities	1,386,148			2,223,855			140,050			(2,061,122		)	1,688,931
	Total liabilities	$	1,411,196		$	2,275,960		$	207,587		$	(2,061,122	)	$	1,833,621
	Stockholders’ equity:
	Common stock	245			—			—			—			245
	Additional paid-in capital	2,232,390			149,857			1,315,426			(1,465,283		)	2,232,390
	Accumulated other comprehensive loss	(15,704		)	—			(15,704		)	15,704			(15,704		)
	Accumulated deficit	(1,115,614		)	(560,577		)	(431,284		)	991,861			(1,115,614		)
	Total Molycorp stockholders’ equity	1,101,317			(410,720		)	868,438			(457,718		)	1,101,317
	Noncontrolling interests	—			—			26,321			—			26,321
	Total stockholders’ equity	1,101,317			(410,720		)	894,759			(457,718		)	1,127,638
	Total liabilities and stockholders’ equity	$	2,512,513		$	1,865,240		$	1,102,346		$	(2,518,840	)	$	2,961,259
		31-Dec-13
		(In thousands)
	Condensed Consolidating Balance Sheets	Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Molycorp, Inc. consolidated
	Current assets:
	Cash and cash equivalents	$	169,145		$	6,467		$	138,705		$	—		$	314,317
	Trade accounts receivable, net	—			4,990			56,767			—			61,757
	Inventory	—			32,307			139,476			—			171,783
	Prepaid expenses and other current assets	—			15,833			13,377			—			29,210
	Total current assets	169,145			59,597			348,325			—			577,067
	Non-current assets:
	Deposits	1,754			24,243			—			—			25,997
Property, plant and equipment, net	—			1,620,851			142,023			—			1,762,874
Inventory	—			25,329			—			—			25,329
Intangible assets, net	—			442			330,425			—			330,867
Investments	—			34,134			14,741			—			48,875
Goodwill	—			—			228,750			—			228,750
Investments in consolidated subsidiaries	532,767			121,849			—			(654,616		)	—
Intercompany accounts receivable	2,001,583			—			—			(2,001,583		)	—
Other non-current assets	—			771			6,272			—			7,043
Total non-current assets	2,536,104			1,827,619			722,211			(2,656,199		)	2,429,735
Total assets	$	2,705,249		$	1,887,216		$	1,070,536		$	(2,656,199	)	$	3,006,802
Current liabilities:
Trade accounts payable	$	—		$	49,702		$	34,747		$	—		$	84,449
Accrued expenses	18,158			13,782			16,561			—			48,501
Debt and capital lease obligations	—			2,234			14,128			—			16,362
Other current liabilities	—			617			3,446			—			4,063
Total current liabilities	18,158			66,335			68,882			—			153,375
Non-current liabilities:
Asset retirement obligation	—			16,966			—			—			16,966
Deferred tax liabilities	—			—			85,481			—			85,481
Debt and capital lease obligations	1,339,368			19,355			5,193			—			1,363,916
Intercompany accounts payable	—			1,999,562			2,021			(2,001,583		)	—
Other non-current liabilities	—			1,393			8,609			—			10,002
Total non-current liabilities	1,339,368			2,037,276			101,304			(2,001,583		)	1,476,365
Total liabilities	$	1,357,526		$	2,103,611		$	170,186		$	(2,001,583	)	$	1,629,740
Stockholders’ equity:
Common stock	241			—			—			—			241
Preferred stock	2			—			—			—			2
Additional paid-in capital	2,194,405			149,857			1,315,426			(1,465,283		)	2,194,405
Accumulated other comprehensive loss	(6,451		)	—			(6,451		)	6,451			(6,451		)
Accumulated deficit	(840,474		)	(366,252		)	(437,964		)	804,216			(840,474		)
Total Molycorp stockholders’ equity	1,347,723			(216,395		)	871,011			(654,616		)	1,347,723
Noncontrolling interests	—			—			29,339			—			29,339
Total stockholders’ equity	1,347,723			(216,395		)	900,350			(654,616		)	1,377,062
Total liabilities and stockholders’ equity	$	2,705,249		$	1,887,216		$	1,070,536		$	(2,656,199	)	$	3,006,802
	Three Months Ended September 30, 2014
	(In thousands)
Condensed Consolidating Statements of Operations and Comprehensive Income	Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Molycorp, Inc. consolidated
Revenues	$	—		$	19,163		$	115,150		$	(10,376	)	$	123,937
Costs of sales:
Costs excluding depreciation and amortization	—			(45,596		)	(84,413		)	10,376			(119,633		)
Depreciation and amortization	—			(16,460		)	(2,922		)	—			(19,382		)
Gross (loss) profit	—			(42,893		)	27,815			—			(15,078		)
Operating expenses:
Selling, general and administrative	(4		)	(11,233		)	(10,670		)	—			(21,907		)
Depreciation, amortization and accretion	—			(952		)	(7,141		)	—			(8,093		)
Research and development	—			(111		)	(4,242		)	—			(4,353		)
Impairment of long-lived assets	—			—			—			—			—
Operating (loss) income	(4		)	(55,189		)	5,762			—			(49,431		)
Other (expense) income:
Other (expense) income	(21,778		)	90			19,077			—			(2,611		)
Impairment of investment	—			(12,000		)	—			—			(12,000		)
Interest expense, net of capitalized interest	(33,201		)	(1,894		)	(347		)	—			(35,442		)
Interest income (expense) from intercompany notes	10,047			(537		)	(9,510		)	—			—
Equity loss from consolidated subsidiaries	(60,243		)	(3,065		)	—			63,308			—
(Loss) income before income taxes and equity earnings	(105,179		)	(72,595		)	14,982			63,308			(99,484		)
Income tax expense	—			—			(3,572		)	—			(3,572		)
Equity in loss of affiliates	—			(1,820		)	(272		)	—			(2,092		)
Net (loss) income	(105,179		)	(74,415		)	11,138			63,308			(105,148		)
Net income attributable to noncontrolling interest	—			—			(31		)	—			(31		)
Net (loss) income attributable to Molycorp stockholders	$	(105,179	)	$	(74,415	)	$	11,107		$	63,308		$	(105,179	)
Net (loss) income	$	(105,179	)	$	(74,415	)	$	11,138		$	63,308		$	(105,148	)
Other comprehensive loss:
Foreign currency translation adjustments	—			—			(8,292		)	—			(8,292		)
Comprehensive (loss) income	$	(105,179	)	$	(74,415	)	$	2,846		$	63,308		$	(113,440	)
Comprehensive (loss) income attributable to:
Molycorp stockholders	(105,179		)	(74,415		)	2,877			63,308			(113,409		)
Noncontrolling interest	—			—			(31		)	—			(31		)
	$	(105,179	)	$	(74,415	)	$	2,846		$	63,308		$	(113,440	)
	Nine Months Ended September 30, 2014
	(In thousands)
Condensed Consolidating Statements of Operations and Comprehensive Income	Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Molycorp, Inc. consolidated
Revenues	$	—		$	48,402		$	342,201		$	(31,234	)	$	359,369
Costs of sales:
Costs excluding depreciation and amortization	—			(137,465		)	(252,275		)	31,234			(358,506		)
Depreciation and amortization	—			(44,618		)	(10,990		)	—			(55,608		)
Gross (loss) profit	—			(133,681		)	78,936			—			(54,745		)
Operating expenses:
Selling, general and administrative	(397		)	(29,828		)	(30,061		)	—			(60,286		)
Depreciation, amortization and accretion	—			(3,054		)	(19,498		)	—			(22,552		)
Research and development	—			(354		)	(11,249		)	—			(11,603		)
Impairment of long-lived assets	—			—			—			—			—
Operating (loss) income	(397		)	(166,917		)	18,128			—			(149,186		)
Other (expense) income:
Other (expense) income	(24,900		)	302			22,759			—			(1,839		)
Impairment of investment	—			(12,000		)	—			—			(12,000		)
Interest expense, net of capitalized interest	(107,415		)	(4,289		)	(663		)	—			(112,367		)
Interest income (expense) from intercompany notes	30,836			(1,551		)	(29,285		)	—			—
Equity loss from consolidated subsidiaries	(182,894		)	(4,751		)	—			187,645			—
(Loss) income before income taxes and equity earnings	(284,770		)	(189,206		)	10,939			187,645			(275,392		)
Income tax benefit (expense)	9,630			—			(3,868		)	—			5,762
Equity in loss of affiliates	—			(5,119		)	(249		)	—			(5,368		)
Net (loss) income	(275,140		)	(194,325		)	6,822			187,645			(274,998		)
Net income attributable to noncontrolling interest	—			—			(142		)	—			(142		)
Net (loss) income attributable to Molycorp stockholders	$	(275,140	)	$	(194,325	)	$	6,680		$	187,645		$	(275,140	)
Net (loss) income	$	(275,140	)	$	(194,325	)	$	6,822		$	187,645		$	(274,998	)
Other comprehensive loss:
Foreign currency translation adjustments	—			—			(9,253		)	—			(9,253		)
Comprehensive loss	$	(275,140	)	$	(194,325	)	$	(2,431	)	$	187,645		$	(284,251	)
Comprehensive loss attributable to:
Molycorp stockholders	(275,140		)	(194,325		)	(2,289		)	187,645			(284,109		)
Noncontrolling interest	—			—			(142		)	—			(142		)
	$	(275,140	)	$	(194,325	)	$	(2,431	)	$	187,645		$	(284,251	)
	Three Months Ended September 30, 2013
	(In thousands)
Condensed Consolidating Statements of Operations and Comprehensive Income	Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Molycorp, Inc. consolidated
Revenues	$	—		$	19,237		$	142,421		$	(12,592	)	$	149,066
Costs of sales:
Costs excluding depreciation and amortization	—			(55,517		)	(107,519		)	12,592			(150,444		)
Depreciation and amortization	—			(9,336		)	(7,064		)	—			(16,400		)
Gross (loss) profit	—			(45,616		)	27,838			—			(17,778		)
Operating expenses:
Selling, general and administrative	(3		)	(15,623		)	(8,842		)	—			(24,468		)
Depreciation, amortization and accretion	—			(1,597		)	(8,475		)	—			(10,072		)
Research and development	—			(1,037		)	(4,528		)	—			(5,565		)
Impairment of long-lived assets	—			—			(1,118		)	—			(1,118		)
Operating (loss) income	(3		)	(63,873		)	4,875			—			(59,001		)
Other (expense) income:
Other income (expense)	1,731			63			(2,685		)	—			(891		)
Interest expense, net of capitalized interest	(14,093		)	(744		)	(1,452		)	—			(16,289		)
Interest income (expense) from intercompany notes	9,211			1,412			(10,623		)	—			—
Equity loss from consolidated subsidiaries	(54,858		)	(333		)	—			55,191			—
Loss before income taxes and equity earnings	(58,012		)	(63,475		)	(9,885		)	55,191			(76,181		)
Income tax (expense) benefit	(11,914		)	14,879			9,937			—			12,902
Equity in loss of affiliates	—			(1,617		)	(717		)	—			(2,334		)
Loss from continuing operations	(69,926		)	(50,213		)	(665		)	55,191			(65,613		)
Loss from discontinuing operations, net of tax	—			—			(4,186		)	—			(4,186		)
Net loss	(69,926		)	(50,213		)	(4,851		)	55,191			(69,799		)
Net income attributable to noncontrolling interest	—			—			(130		)	—			(130		)
Net loss attributable to Molycorp stockholders	$	(69,926	)	$	(50,213	)	$	(4,981	)	$	55,191		$	(69,929	)
Net loss	$	(69,926	)	$	(50,213	)	$	(4,851	)	$	55,191		$	(69,799	)
Other comprehensive loss:
Foreign currency translation adjustments	—			—			4,217			—			4,217
Comprehensive loss	$	(69,926	)	$	(50,213	)	$	(634	)	$	55,191		$	(65,582	)
Comprehensive loss attributable to:
Molycorp stockholders	(69,926		)	(50,213		)	(504		)	55,191			(65,452		)
Noncontrolling interest	—			—			(130		)	—			(130		)
	$	(69,926	)	$	(50,213	)	$	(634	)	$	55,191		$	(65,582	)
	Nine Months Ended September 30, 2013
	(In thousands)
Condensed Consolidating Statements of Operations and Comprehensive Loss	Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Molycorp, Inc. consolidated
Revenues	$	—		$	68,014		$	397,548		$	(34,982	)	$	430,580
Costs of sales:
Costs excluding depreciation and amortization	—			(147,209		)	(309,472		)	34,982			(421,699		)
Depreciation and amortization	—			(28,523		)	(20,760		)	—			(49,283		)
Gross (loss) profit	—			(107,718		)	67,316			—			(40,402		)
Operating expenses:
Selling, general and administrative	(3		)	(49,126		)	(27,573		)	—			(76,702		)
Depreciation, amortization and accretion	—			(3,258		)	(23,015		)	—			(26,273		)
Research and development	—			(4,428		)	(14,048		)	—			(18,476		)
Impairment of long-lived assets	—			—			(1,495		)	—			(1,495		)
Operating (loss) income	(3		)	(164,530		)	1,185			—			(163,348		)
Other (expense) income:
Other income	1,731			306			437			—			2,474
Interest (expense) income, net	(39,978		)	(5,039		)	2,210			—			(42,807		)
Interest income (expense) from intercompany notes	27,455			4,293			(31,748		)	—			—
Equity loss from consolidated subsidiaries	(163,247		)	(6,742		)	—			169,989			—
Loss before income taxes and equity earnings	(174,042		)	(171,712		)	(27,916		)	169,989			(203,681		)
Income tax (expense) benefit	(6,030		)	23,130			21,822			—			38,922
Equity in loss of affiliates	—			(5,239		)	(3,451		)	—			(8,690		)
Loss from continuing operations	(180,072		)	(153,821		)	(9,545		)	169,989			(173,449		)
Loss from discontinuing operations, net of tax	—			—			(5,190		)	—			(5,190		)
Net loss	(180,072		)	(153,821		)	(14,735		)	169,989			(178,639		)
Net income attributable to noncontrolling interest	—			—			(1,433		)	—			(1,433		)
Net loss attributable to Molycorp stockholders	$	(180,072	)	$	(153,821	)	$	(16,168	)	$	169,989		$	(180,072	)
Net loss	$	(180,072	)	$	(153,821	)	$	(14,735	)	$	169,989		$	(178,639	)
Other comprehensive loss:
Foreign currency translation adjustments	—			—			1,585			—			1,585
Comprehensive loss	$	(180,072	)	$	(153,821	)	$	(13,150	)	$	169,989		$	(177,054	)
Comprehensive loss attributable to:
Molycorp stockholders	(180,072		)	(153,821		)	(11,717		)	169,989			(175,621		)
Noncontrolling interest	—			—			(1,433		)	—			(1,433		)
	$	(180,072	)	$	(153,821	)	$	(13,150	)	$	169,989		$	(177,054	)
	Nine Months Ended September 30, 2014
	(In thousands)
Condensed Consolidating Statements of Cash Flows	Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Molycorp, Inc. consolidated
Net cash used in operating activities	$	(25,585	)	$	(138,045	)	$	17,224		$	—		$	(146,406	)
Cash flows from investing activities:
Intercompany advances made	(174,993		)	(133,291		)	(58,309		)	366,593			—
Repayments from non-guarantor	34,997			—			—			(34,997		)	—
Loans to guarantors	—			—			(6,655		)	6,655			—
Investment in joint ventures	—			—			(703		)	—			(703		)
Capital expenditures	—			(56,837		)	(6,000		)	—			(62,837		)
Recovery from insurance claims	—			12,900			—			—			12,900
Other investing activities	—			—			460			—			460
Net cash used in investing activities	(139,996		)	(177,228		)	(71,207		)	338,251			(50,180		)
Cash flows from financing activities:
Repayments of debt	—			—			(5,879		)	—			(5,879		)
Debt issuance costs	(4,032		)	(7,605		)	(3,131		)	—			(14,768		)
Proceeds from the Financings	50,167			139,833			60,000			—			250,000
Partial repayment of convertible notes	(27,495		)	—			—			—			(27,495		)
Payments of preferred dividends	(2,846		)	—			—			—			(2,846		)
Dividend paid to noncontrolling interests	—			—			(3,170		)	—			(3,170		)
Repayments to parent	—			—			(34,997		)	34,997			—
Borrowing from non-guarantors	—			6,655			—			(6,655		)	—
Intercompany advances owed	190,160			176,433			—			(366,593		)	—
Other financing activities	(263		)	1,889			—			—			1,626
Net cash (used in) provided by financing activities	205,691			317,205			12,823			(338,251		)	197,468
Effect of exchange rate changes on cash	—			—			(1,722		)	—			(1,722		)
Net change in cash and cash equivalents	40,110			1,932			(42,882		)	—			(840		)
Cash and cash equivalents at beginning of the period	169,145			6,467			138,705			—			314,317
Cash and cash equivalents at end of period	$	209,255		$	8,399		$	95,823		$	—		$	313,477
	Nine Months Ended September 30, 2013
	(In thousands)
Condensed Consolidating Statements of Cash Flows	Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Molycorp, Inc. consolidated
Net cash provided by (used in) operating activities	$	(2,990	)	$	(79,888	)	$	(7,135	)	$	—		$	(90,013	)
Cash flows from investing activities:
Loans to guarantor	—			—			(40,000		)	40,000			—
Loans to parent	—			—			(12,800		)	12,800			—
Intercompany advances made	(438,374		)	—			—			438,374			—
Loans to non-guarantor	—			(1,300		)	—			1,300			—
Repayments from non-guarantor	38,000			264			—			(38,264		)	—
Investment in joint ventures	—			(3,423		)	—			—			(3,423		)
Capital expenditures	—			(320,829		)	(13,768		)	—			(334,597		)
Other investing activities	—			—			(364		)	—			(364		)
Net cash used in investing activities	(400,374		)	(325,288		)	(66,932		)	454,210			(338,384		)
Cash flows from financing activities:
Repayments of debt	—			—			(25,990		)	—			(25,990		)
Net proceeds from sale of common stock	248,150			—			—			—			248,150
Issuance of 5.50% Convertible Notes	165,600			—			—			—			165,600
Payments of preferred dividends	(8,539		)	—			—			—			(8,539		)
Dividend paid to noncontrolling interests	—			—			(4,472		)	—			(4,472		)
Borrowings from non-guarantor	12,800			40,000			—			(52,800		)	—
Borrowing from guarantor	—			—			1,300			(1,300		)	—
Repayments to parent	—			—			(38,000		)	38,000			—
Repayment to guarantor	—			—			(264		)	264			—
Intercompany advances owed	—			356,867			81,507			(438,374		)	—
Other financing activities	—			(797		)	—			—			(797		)
Net cash provided by (used in) financing activities	418,011			396,070			14,081			(454,210		)	373,952
Effect of exchange rate changes on cash	—			—			569			—			569
Net change in cash and cash equivalents	14,647			(9,106		)	(59,417		)	—			(53,876		)
Cash and cash equivalents at beginning of the period	16,560			18,020			193,210			—			227,790
Cash and cash equivalents at end of period	$	31,207		$	8,914		$	133,793		$	—		$	173,914

Impairment_of_Investment_Notes

Impairment of Investment (Notes)	9 Months Ended
	Sep. 30, 2014
Investments, All Other Investments [Abstract]	'
Impairment of Investment	'
	Impairment of Investment
	In September 2011, we invested $20.0 million in Boulder Wind Power, Inc. ("BWP") Series B convertible preferred stock that we accounted for at cost. BWP is a company engaged in the development of permanent magnet generators and power conversion technology. At December 31, 2013, due to certain delays in the commercialization of BWP's technology, we reassessed the carrying value of this investment and determined to write it down to $12.0 million. In the third quarter of 2014, the Board of Directors of BWP approved a plan to wind-down BWP's day-to-day operations and pursue potential sales opportunities for its portfolio of intellectual properties. Due to the current status of BWP operations and uncertainty around the timing and amount of any future value from the investment in BWP, we recognized an impairment charge of $12.0 million for the three and nine months ended September 30, 2014 in "Other (expense) income" in the condensed consolidated statement of operations and comprehensive loss to write-off the remaining investment balance in BWP.

Basis_of_Presentation_Policies

Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Basis of Presentation	'
	The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with GAAP for interim financial information and Regulation S-X promulgated under the Exchange Act, and reflect all adjustments that are normal and recurring in nature, which, in the opinion of management, are necessary for the fair presentation of our financial position, results of operations and cash flows at September 30, 2014, and for all periods presented. While the December 31, 2013 balance sheet information was derived from our audited financial statements, for interim periods, GAAP and Regulation S-X do not require all information and related disclosures that are required in the annual financial statements and, as a result, all disclosures required by GAAP and Regulation S-X for annual financial statements have not been included in this report. Therefore, the accompanying unaudited condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes for the year ended December 31, 2013 included in our Annual Report on Form 10-K filed with the SEC on March 3, 2014.
	The unaudited condensed consolidated financial statements include our accounts and the accounts of our wholly-owned and majority-owned subsidiaries. Intercompany balances and transactions have been eliminated on consolidation. Investments in joint ventures where we do not exert control, but have the ability to exercise significant influence over the operating and financial policies of the investee, are accounted for under the equity method of investment. All other investments are accounted for at cost.
Use of Estimates	'
	Use of Estimates
	The preparation of the financial statements, in accordance with GAAP, requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances. Actual results may differ significantly from these estimates under different assumptions and conditions. Significant estimates we made in the accompanying financial statements include the collectability of accounts receivable, the recoverability of inventory, the useful lives and recoverability of long-lived assets such as property, plant and equipment, intangible assets, goodwill and investments, capital leases, uncertain tax positions, the realizability of deferred tax assets, and the adequacy of the asset retirement obligation.
Significant Accounting Policies	'
	Significant Accounting Policies
	A summary of our significant accounting policies can be found in Item 8, Note 2 of the audited consolidated financial statements for the year ended December 31, 2013 included in our Annual Report on Form 10-K filed with the SEC on March 3, 2014.
Recent Accounting Pronouncements	'
	Recent Accounting Pronouncements
	In August 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements - Going Concern (Subtopic 205-40): Disclosure of Uncertainties about an Entity’s Ability to Continue as a Going Concern. This update provides guidance about management’s responsibilities in evaluating an entity’s going concern uncertainties, and about the timing and content of related footnote disclosures. Under this amended guidance, an entity’s management should evaluate whether there are conditions or events, considered in the aggregate, that raise substantial doubt about the entity’s ability to continue as a going concern within one year after the date that the financial statements are issued (or within one year after the date that the financial statements are available to be issued when applicable). Management’s evaluation should be based on relevant conditions and events that are known and reasonably knowable at the date that the financial statements are issued (or at the date that the financial statements are available to be issued when applicable). Substantial doubt about an entity’s ability to continue as a going concern exists when relevant conditions and events, considered in the aggregate, indicate that it is probable that the entity will be unable to meet its obligations as they become due within one year after the date that the financial statements are issued (or available to be issued). The term probable is used consistently with its use in Topic 450, Contingencies. When management identifies conditions or events that raise substantial doubt about an entity’s ability to continue as a going concern, management should consider whether its plans that are intended to mitigate those relevant conditions or events will alleviate the substantial doubt. The mitigating effect of management’s plans should be considered only to the extent that (1) it is probable that the plans will be effectively implemented and, if so, (2) it is probable that the plans will mitigate the conditions or events that raise substantial doubt about the entity’s ability to continue as a going concern. If conditions or events raise substantial doubt about an entity’s ability to continue as a going concern, but the substantial doubt is alleviated as a result of consideration of management’s plans, the entity should disclose information that enables users of the financial statements to understand all of the following (or refer to similar information disclosed elsewhere in the footnotes):
	a. Principal conditions or events that raised substantial doubt about the entity’s ability to continue as a going concern (before consideration of management’s plans);
	b. Management’s evaluation of the significance of those conditions or events in relation to the entity’s ability to meet its obligations; and
	c. Management’s plans that alleviated substantial doubt about the entity’s ability to continue as a going concern.
	If conditions or events raise substantial doubt about an entity’s ability to continue as a going concern, and substantial doubt is not alleviated after consideration of management’s plans, an entity should include a statement in the footnotes indicating that there is substantial doubt about the entity’s ability to continue as a going concern within one year after the date that the financial statements are issued (or available to be issued). Additionally, the entity should disclose information that enables users of the financial statements to understand all of the following:
	a. Principal conditions or events that raise substantial doubt about the entity’s ability to continue as a going concern;
	b. Management’s evaluation of the significance of those conditions or events in relation to the entity’s ability to meet its obligations; and
	c. Management’s plans that are intended to mitigate the conditions or events that raise substantial doubt about the entity’s ability to continue as a going concern.
	This update is effective for the annual period ending after December 15, 2016, and for annual periods and interim periods thereafter. Early application is permitted.
	In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). The core principle of this new guidance is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, an entity should apply the following steps:
	Step 1: Identify the contract(s) with a customer.
	Step 2: Identify the performance obligations in the contract.
	Step 3: Determine the transaction price.
	Step 4: Allocate the transaction price to the performance obligations in the contract.
	Step 5: Recognize revenue when (or as) the entity satisfies a performance obligation.
	The new guidance also specifies the accounting for some costs to obtain or fulfill a contract with a customer. An entity will be required to disclose sufficient qualitative and quantitative information to enable users of financial statements to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. For calendar-year public entities, the new guidance is effective starting in 2017, and interim periods within that year. Early adoption is not permitted. An entity should apply the amendments in this update using one of the following two methods:
	1	Retrospectively to each prior reporting period presented.
	2	Retrospectively with the cumulative effect of initially applying this update recognized at the date of initial application. If an entity elects this transition method, it also should provide the additional disclosures in reporting periods that include the date of initial application of:
	i.	The amount by which each financial statement line item is affected in the current reporting period by the application of this update as compared to the guidance that was in effect before the change.
	ii.	An explanation of the reasons for significant changes.
	We are in the process of evaluating which of the two methods we will apply to adopt the amendments, and whether this new guidance will have a material impact on our financial statements and related disclosures.

Segment_Information_Tables

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Schedule of segment information	'
	Three months ended September 30, 2014	Resources			Chemicals and Oxides			Magnetic Materials and Alloys			Rare Metals			Corporate and other (a)			Eliminations(b)			Total Molycorp, Inc.
		(In thousands)
	Revenues:
	External	$	4,509		$	36,814		$	61,345		$	21,269					$	—		$	123,937
	Inter-segment	9,424			6,658			1,342			—						(17,424		)	—
	Total revenues	$	13,933		$	43,472		$	62,687		$	21,269					$	(17,424	)	$	123,937
	OIBDA	$	(31,087	)	$	4,251		$	13,715		$	595
	Depreciation, amortization and accretion	(17,332		)	(3,823		)	(4,232		)	(2,034		)
	Operating (loss) income	$	(48,419	)	$	428		$	9,483		$	(1,439	)	$	(9,065	)	$	(419	)	$	(49,431	)
	Other expense																			(2,611		)
	Impairment of investment																			(12,000		)
	Interest expense, net of capitalized interest																			(35,442		)
	Loss before income taxes and equity earnings																			$	(99,484	)
	Three months ended September 30, 2013	Resources			Chemicals and Oxides			Magnetic Materials and Alloys			Rare Metals			Corporate and other (a)			Eliminations(b)			Total Molycorp, Inc.
		(In thousands)
	Revenues:
	External	$	4,655		$	50,791		$	72,626		$	20,994					—			$	149,066
	Inter-segment	8,858			7,174			—			—						(16,032		)	—
	Total revenues	$	13,513		$	57,965		$	72,626		$	20,994					$	(16,032	)	$	149,066
	OIBDA	$	(44,673	)	$	4,561		$	18,520		$	(911	)
	Depreciation, amortization and accretion	(10,853		)	(5,960		)	(7,458		)	(2,144		)
	Operating (loss) income	$	(55,526	)	$	(1,399	)	$	11,062		$	(3,055	)	$	(10,806	)	$	723		$	(59,001	)
	Other expense																			(891		)
	Interest expense, net of capitalized interest																			(16,289		)
	Loss before income taxes and equity earnings																			$	(76,181	)
	Nine months ended September 30, 2014	Resources			Chemicals and Oxides			Magnetic Materials and Alloys			Rare Metals			Corporate and other (a)			Eliminations(b)			Total Molycorp, Inc.
		(In thousands)
	Revenues:
	External	$	9,951		$	122,521		$	169,260		$	57,637					$	—		$	359,369
	Inter-segment	29,582			16,138			3,725			—						(49,445		)	—
	Total revenues	$	39,533		$	138,659		$	172,985		$	57,637					$	(49,445	)	$	359,369
	OIBDA	$	(97,831	)	$	12,388		$	39,203		$	1,265
	Depreciation, amortization and accretion	(47,432		)	(11,605		)	(12,730		)	(6,228		)
	Operating (loss) income	$	(145,263	)	$	783		$	26,473		$	(4,963	)	$	(25,259	)	$	(957	)	$	(149,186	)
	Other expense																			(1,839		)
	Impairment of investment																			(12,000		)
	Interest expense, net of capitalized interest																			(112,367		)
	Loss before income taxes and equity earnings																			$	(275,392	)
	Nine months ended September 30, 2013	Resources			Chemicals and Oxides			Magnetic Materials and Alloys			Rare Metals			Corporate and other (a)			Eliminations(b)			Total Molycorp, Inc.
		(In thousands)
	Revenues:
	External	$	30,235		$	135,180		$	193,417		$	71,748					$	—		$	430,580
	Inter-segment	18,168			28,476			—			—						(46,644		)	—
	Total revenues	$	48,403		$	163,656		$	193,417		$	71,748					$	(46,644	)	$	430,580
	OIBDA	$	(104,519	)	$	(2,792	)	$	48,823		$	3,947
	Depreciation, amortization and accretion	(31,536		)	(17,087		)	(20,360		)	(6,402		)
	Operating (loss) income	$	(136,055	)	$	(19,879	)	$	28,463		$	(2,455	)	$	(32,321	)	$	(1,101	)	$	(163,348	)
	Other income																			2,474
	Interest expense, net of capitalized interest																			(42,807		)
	Loss before income taxes and equity earnings																			$	(203,681	)

Inventory_Tables

Inventory (Tables)	9 Months Ended
	Sep. 30, 2014
Inventory Disclosure [Abstract]	'
Schedule of inventory	'
	At September 30, 2014 and December 31, 2013, our inventory consisted of the following:
		September 30,		December 31,
		2014		2013
		(In thousands)
	Current:
	Concentrate stockpiles	$	—	$	24
	Raw materials	52,215		42,627
	Work in process	25,254		41,962
	Finished goods	62,397		65,662
	Materials and supplies	27,070		21,508
	Total current	$	166,936	$	171,783
	Long-term:
	Concentrate stockpiles	$	—	$	4
	Raw materials	25,530		25,325
	Total long-term	$	25,530	$	25,329
Schedule of charges to cost of sales based on normal production levels and write-down of inventory	'
	The following table presents charges to costs of sales related to our assessment of normal production levels and write-downs of inventory:
		Three Months Ended September 30,				Nine Months Ended September 30,
		2014		2013		2014		2013
		(In thousands)
	Abnormal production costs expensed in the period (a)	$	28,889	$	18,249	$	71,436	$	65,743
	Write-down to the lower of cost or market (b)	14,776		19,633		50,296		60,733
	Write-downs of stockpile inventory (c)	—		6,884		1,342		13,741
	Total	$	43,665	$	44,766	$	123,074	$	140,217
	(a)	Relates to production costs that would have been inventoriable had we been operating at normal production levels. In all periods presented, the majority of these production costs related to the Resources segment.
	(b)	Due to the decline in some rare earths prices and low inventory turnover.
	(c)	Adjustments of the estimated REO content in the stockpile at the Resources segment.

Property_Plant_and_Equipment_n1

Property, Plant and Equipment, net (Tables)	9 Months Ended
	Sep. 30, 2014
Property, Plant and Equipment [Abstract]	'
Schedule of property, plant and equipment	'
	At September 30, 2014 and December 31, 2013, our property, plant and equipment consisted of the following:
		September 30,			December 31,
		2014			2013
		(In thousands)
	Land	$	12,045		$	12,822
	Land improvements	304,659			327,029
	Buildings and improvements	609,337			418,510
	Plant and equipment	509,562			288,603
	Vehicles	2,982			2,986
	Computer software	12,573			12,424
	Furniture and fixtures	1,196			1,044
	Construction in progress (a)	394,572			755,107
	Natural gas delivery facility under capital lease	15,658			15,658
	Mining equipment under capital lease	10,982			7,370
	Mineral properties	23,757			23,999
	Property, plant and equipment at cost	1,897,323			1,865,552
	Less accumulated depreciation	(160,451		)	(102,678		)
	Property, plant and equipment, net	$	1,736,872		$	1,762,874
	(a)	Primarily related to expenditures at the Mountain Pass facility.

Debt_and_Capital_Lease_Obligat1

Debt and Capital Lease Obligations (Tables)	9 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Schedule of Long-term Debt Instruments	'
	The following table provides a summary of the current and non-current portions of our debt outstanding and capital lease obligations at September 30, 2014 and December 31, 2013:
		September 30, 2014								December 31, 2013
		Current				Non-Current				Current				Non-Current
		(In thousands)
	Bank loans due May 2014 - September 2017	$	9,609			$	1,486			$	14,128			$	2,699
	3.25% Convertible Notes, net of discount, due June 2016	—				191,743				—				207,028
	6.00% Convertible Notes, net of discount, due September 2017	—				355,614				—				346,708
	5.00% Debentures, net of discount, due December 2017	—				2,129				—				2,493
	5.50% Convertible Notes, net of discount, due February 2018	—				152,084				—				148,198
	12.00% Term Loans, due September 2019	—				96,595				—				—
	12.00% Equipment Financing, due September 2019	—				124,583				—				—
	10% Senior Notes, net of discount, due June 2020	—				638,521				—				637,435
	Total debt	9,609				1,562,755				14,128				1,344,561
	Capital lease obligations	3,160				20,047				2,234				19,355
	Total debt and capital lease obligations	$	12,769			$	1,582,802			$	16,362			$	1,363,916
Schedule of Maturities of Long-term Debt	'
	Scheduled minimum debt repayments, excluding capital lease obligations, were as follows at September 30, 2014:
		September 30, 2014
	Debt maturities, excluding capital leases	(In thousands)
	Remainder of 2014	2,040
	2015	7,997
	2016	207,331
	2017	412,573
	2018	172,500
	Thereafter	971,154
	Total	1,773,595
	As of September 30, 2014, we were in compliance with all applicable covenants related to our indebtedness
Reconciliation of Principal to Net Carrying Amount of Long-term Debt	'
	The following table presents a reconciliation of the principal amount to the net carrying value of the Term Loans and the Equipment Financing at September 30, 2014:
		12.00% Term Loans				12.00% Equipment Financing
		September 30,				September 30,
		2014				2014
		(In thousands)
	Principal amount (a)	$	110,473			$	140,069
	Unamortized debt discount	(13,878		)		(15,486		)
	Net carrying amount	$	96,595			$	124,583
	(a) Includes PIK interest accretion.
Schedule of Long-term Convertible Debt	'
	The following table presents a reconciliation of the principal amount to the net carrying value for each of our Convertible Notes and our Senior Notes at September 30, 2014 and December 31, 2013, and provides the interest cost of each instrument for the three and nine months ended September 30, 2014 and 2013:
		3.25% Convertible Notes							6.00% Convertible Notes							5.50% Convertible Notes						10% Senior Notes
		September 30,			December 31,				September 30,			December 31,				September 30,			December 31,			September 30,			December 31,
		2014			2013				2014			2013				2014			2013			2014			2013
		(In thousands)
	Principal amount	$	206,505		$	230,000			$	410,000		$	414,000			$	172,500		172,500			$	650,000		$	650,000
	Unamortized debt discount	(14,762		)	(22,972		)		(54,386		)	(67,292		)		(20,416		)	(24,302		)	(11,479		)	(12,565		)
	Net carrying amount	$	191,743		$	207,028			$	355,614		$	346,708			$	152,084		148,198			$	638,521		$	637,435
	Interest cost (a)
		Three Months Ended September 30,
		2014			2013				2014			2013				2014			2013			2014			2013
		$	3,935		$	3,988			$	10,710		$	9,969			$	3,711		$	3,609		$	16,658		$	16,622
		Nine Months Ended September 30,
		2014			2013				2014			2013				2014			2013			2014			2013
		$	12,063		$	11,839			$	31,135		$	29,691			$	11,046		$	9,482		$	49,942		$	49,837
	(a) Interest cost includes the coupon interest, accretion of the initial equity component of the convertible notes (3.25% - $36,227; 6.00% - $68,695; and 5.50% - $21,815), accretion of the underwriting discounts and amortization of the issuance costs allocated to the liability component.
Schedule of Future Minimum Lease Payments for Capital Leases	'
	At September 30, 2014, total future minimum payments on our capital leases were as follows:
		September 30, 2014
	Capital Leases	(In thousands)
	Remainder of 2014	2,069
	2015	8,278
	2016	8,278
	2017	7,161
	2018	5,770
	Thereafter	18,195
	Total	49,751

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2014
Equity [Abstract]	'
Schedule of the Fair Value of Warrants	'
	The fair value of the Warrants was determined using an option-pricing model with the following inputs:
		Penny Warrants			Strike Warrants
	Term (years)	5			5
	Stock price	$	1.55		$	1.55
	Strike price	$	0.01		$	2.04
	Risk-free interest rate	1.79		%	1.79		%
	Volatility	82.6		%	49.9		%
	Dividend yield	—		%	—		%
Accounting Changes and Error Corrections	'
	The out-of-period adjustment had the following impact on the condensed consolidated balance sheet and the condensed consolidated statements of operations and comprehensive loss:
	Increase to balance sheet captions:	As of June 30, 2014
	Other non-current assets	$	16,381
	Property, plant and equipment, net	3,378
	Additional paid-in capital	15,062
	Increase to statements of operations and comprehensive loss captions:	Three Months Ended
		June 30, 2014
	Interest expense, net of capitalized interest	$	4,933
	Income tax benefit	9,630
Schedule of Share-Lending Arrangements	'
	The following table provides certain other information on our share-lending arrangements as of September 30, 2014:
		2012 Borrowed Shares			2013 Borrowed Shares			Total
		(In thousands)
	Fair value	$	3,001		$	1,686		$	4,687
	Unamortized issuance cost	10,624			4,505			15,129
Deferred Finance Costs, Own-share Lending Arrangement, Issuance Costs	'
	The amount of non-cash interest cost recognized relating to the amortization of the issuance cost associated with the combined share-lending arrangements was as follows in 2014:
		Three Months Ended			Nine Months Ended
		September 30, 2014			September 30, 2014
		(In thousands)
	Interest cost expensed	$	1,250		$	6,183
	Interest cost capitalized	—			3,378
Schedule of Accumulated Other Comprehensive Income (Loss)	'
	The following table provides the changes in Accumulated other comprehensive income (loss) (“AOCI”) for the nine-month periods ended September 30, 2014 and 2013:
		Foreign currency translation adjustments			Postretirement benefit liability			Accumulated other comprehensive loss
		(In thousands)
	Balance at December 31, 2013	$	(6,638	)	$	187		$	(6,451	)
	Change in other comprehensive loss before reclassifications	(9,253		)	—			(9,253		)
	Net income (loss) reclassified from AOCI	—			—			—
	Balance at September 30, 2014	$	(15,891	)	$	187		$	(15,704	)
		Foreign currency translation adjustments			Postretirement benefit liability			Accumulated other comprehensive loss
		(In thousands)
	Balance at December 31, 2012	$	(8,261	)	$	(1,172	)	$	(9,433	)
	Change in other comprehensive loss before reclassifications	1,585			—			1,585
	Net income (loss) reclassified from AOCI	—			—			—
	Balance at September 30, 2013	$	(6,676	)	$	(1,172	)	$	(7,848	)

StockBased_Compensation_Tables

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2014
PBRSUs	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Schedule of Share-based Compensation, Restricted Stock Units Award Activity	'
	The following tables summarize the stock-based awards with significant activity for the nine months ended September 30, 2014:
	PBRSUs	Number of		Weighted Average
		Shares		Grant-Date
				Price
	Unvested at December 31, 2013	697,797		$	7.45
	Granted	755,283		$	5.1
	Forfeited	(9,052	)	5.45
	Vested	—		—
	Unvested at September 30, 2014	1,444,028		$	6.19
RSUs	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Schedule of Share-based Compensation, Restricted Stock Units Award Activity	'
	RSUs	Number of		Weighted Average
		Shares		Grant-Date
				Price
	Unvested at December 31, 2013	1,076,385		$	9.81
	Granted	750,289		$	4.22
	Forfeited	(64,123	)	$	8.84
	Vested	(60,196	)	$	26.85
	Unvested at September 30, 2014	1,702,355		$	6.78

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Schedule of future minimum rental payments for operating leases	'
	Remaining annual minimum payments under these leases at September 30, 2014 were as follows:
		Total		Less Than		1 - 3 Years		4 - 5 Years		More Than
				1 Year						5 Years
		(In thousands)
	Operating lease obligations	$	5,846	$	2,113	$	2,396	$	498	$	839
Contractual Obligation, Fiscal Year Maturity Schedule	'
	Future payments for all purchase commitments at September 30, 2014 were as follows:
		Total		Less Than		1 - 3 Years		4 - 5 Years		More Than
				1 Year						5 Years
		(In thousands)
	Purchase obligations and other commitments	$	75,804	$	75,804	$	—	$	—	$	—

Net_Change_in_Operating_Assets1

Net Change in Operating Assets and Liabilities (Tables)	9 Months Ended
	Sep. 30, 2014
Net Change in Operating Assets and Liabilities	'
Schedule of changes in operating assets and liabilities, net of the effects of acquisitions and dispositions	'
	Net change in operating assets and liabilities, net of the effects of acquisitions and dispositions, consisted of the following for the nine months ended September 30, 2014 and 2013:
		Nine Months Ended September 30,
		2014			2013
		(In thousands)
	Decrease (increase) in operating assets:
	Trade accounts receivable	$	8,301		$	(5,557	)
	Inventory	(50,057		)	26,816
	Prepaid expenses and other current assets	(3,368		)	(1,085		)
	Increase (decrease) in operating liabilities:
	Trade accounts payable	(10,641		)	(16,642		)
	Income tax payable	2,346			(8,768		)
	Interest payable	30,467			(26,765		)
	Asset retirement obligation	(1,415		)	(2,385		)
	Accrued expenses	11,309			(10,826		)
		$	(13,058	)	$	(45,212	)

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value Measurements, Recurring and Nonrecurring	'
	Our assets and liabilities measured at fair value on a recurring basis were as follows at September 30, 2014 and December 31, 2013:
		30-Sep-14
		Quoted Prices in Active Markets for Identical Assets/Liabilities		Significant Other Observable Inputs		Significant Unobservable Inputs
		(Level 1)		(Level 2)		(Level 3)
		(In thousands)
	Assets:
	Cash equivalents	$	212,728	—		—
	Liabilities:
	Derivative liabilities:
	Springing Maturity on Term Loans	—		—		$	1,694
	Strike Warrants	—		—		$	2,510
	Share Purchase Agreement	—		—		$	6,057
		31-Dec-13
		Quoted Prices in Active Markets for Identical Assets/Liabilities		Significant Other Observable Inputs		Significant Unobservable Inputs
		(Level 1)		(Level 2)		(Level 3)
		(In thousands)
	Assets:
	Cash equivalents	$	179,052	—		—
	Liabilities:
	Derivative liability - Share Purchase Agreement	—		—		$	6,089
Fair Value, by Balance Sheet Grouping	'
	The following table presents the fair value of publicly traded financial liabilities we reported at their carrying value at September 30, 2014 and December 31, 2013:
		30-Sep-14					31-Dec-13
		Carrying Value		Fair Value			Carrying Value		Fair Value
		(In thousands)
	Long-term debt
	3.25% Convertible Notes due June 2016	$	191,743	$	128,033		$	207,028	$	161,771
	6.00% Convertible Notes due September 2017	355,614		139,400			346,708		312,570
	5.50% Convertible Notes due February 2018	152,084		61,422			148,198		164,015
	10% Senior Notes due June 2020	638,521		448,500			637,435		646,750
	Total long-term debt	$	1,337,962	$	777,355		$	1,339,369	$	1,285,106

Subsidiary_Guarantor_Financial1

Subsidiary Guarantor Financial Information (Tables)	9 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Schedule of Condensed Balance Sheet	'
		30-Sep-14
		(In thousands)
	Condensed Consolidating Balance Sheets	Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Molycorp, Inc. consolidated
	Current assets:
	Cash and cash equivalents	$	209,255		$	8,399		$	95,823		$	—		$	313,477
	Trade accounts receivable, net	—			4,360			48,869			—			53,229
	Inventory	—			34,217			132,719			—			166,936
	Prepaid expenses and other current assets	—			15,028			12,147			—			27,175
	Total current assets	209,255			62,004			289,558			—			560,817
	Non-current assets:
	Deposits	1,756			28,243			—			—			29,999
	Property, plant and equipment, net	—			1,607,027			129,845			—			1,736,872
	Inventory	—			25,530			—			—			25,530
	Intangible assets, net	—			393			312,485			—			312,878
	Investments	—			17,016			15,194			—			32,210
	Goodwill	—			—			228,750			—			228,750
	Investments in consolidated subsidiaries	340,620			117,098			—			(457,718		)	—
	Intercompany accounts receivable	1,943,181			—			117,941			(2,061,122		)	—
	Other non-current assets	17,701			7,929			8,573			—			34,203
	Total non-current assets	2,303,258			1,803,236			812,788			(2,518,840		)	2,400,442
	Total assets	$	2,512,513		$	1,865,240		$	1,102,346		$	(2,518,840	)	$	2,961,259
	Current liabilities:
	Trade accounts payable	$	—		$	30,434		$	27,838		$	—		$	58,272
	Accrued expenses	25,048			18,159			23,520			—			66,727
	Debt and capital lease obligations	—			3,160			9,609			—			12,769
	Other current liabilities	—			352			6,570			—			6,922
	Total current liabilities	25,048			52,105			67,537			—			144,690
	Non-current liabilities:
	Asset retirement obligation	—			16,681			—			—			16,681
	Deferred tax liabilities	—			—			75,162			—			75,162
	Debt and capital lease obligations	1,381,945			144,638			56,219			—			1,582,802
	Intercompany accounts payable	—			2,061,122			—			(2,061,122		)	—
	Other non-current liabilities	4,203			1,414			8,669			—			14,286
	Total non-current liabilities	1,386,148			2,223,855			140,050			(2,061,122		)	1,688,931
	Total liabilities	$	1,411,196		$	2,275,960		$	207,587		$	(2,061,122	)	$	1,833,621
	Stockholders’ equity:
	Common stock	245			—			—			—			245
	Additional paid-in capital	2,232,390			149,857			1,315,426			(1,465,283		)	2,232,390
	Accumulated other comprehensive loss	(15,704		)	—			(15,704		)	15,704			(15,704		)
	Accumulated deficit	(1,115,614		)	(560,577		)	(431,284		)	991,861			(1,115,614		)
	Total Molycorp stockholders’ equity	1,101,317			(410,720		)	868,438			(457,718		)	1,101,317
	Noncontrolling interests	—			—			26,321			—			26,321
	Total stockholders’ equity	1,101,317			(410,720		)	894,759			(457,718		)	1,127,638
	Total liabilities and stockholders’ equity	$	2,512,513		$	1,865,240		$	1,102,346		$	(2,518,840	)	$	2,961,259
		31-Dec-13
		(In thousands)
	Condensed Consolidating Balance Sheets	Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Molycorp, Inc. consolidated
	Current assets:
	Cash and cash equivalents	$	169,145		$	6,467		$	138,705		$	—		$	314,317
	Trade accounts receivable, net	—			4,990			56,767			—			61,757
	Inventory	—			32,307			139,476			—			171,783
	Prepaid expenses and other current assets	—			15,833			13,377			—			29,210
	Total current assets	169,145			59,597			348,325			—			577,067
	Non-current assets:
	Deposits	1,754			24,243			—			—			25,997
	Property, plant and equipment, net	—			1,620,851			142,023			—			1,762,874
	Inventory	—			25,329			—			—			25,329
	Intangible assets, net	—			442			330,425			—			330,867
	Investments	—			34,134			14,741			—			48,875
	Goodwill	—			—			228,750			—			228,750
	Investments in consolidated subsidiaries	532,767			121,849			—			(654,616		)	—
	Intercompany accounts receivable	2,001,583			—			—			(2,001,583		)	—
	Other non-current assets	—			771			6,272			—			7,043
Total non-current assets	2,536,104			1,827,619			722,211			(2,656,199		)	2,429,735
Total assets	$	2,705,249		$	1,887,216		$	1,070,536		$	(2,656,199	)	$	3,006,802
Current liabilities:
Trade accounts payable	$	—		$	49,702		$	34,747		$	—		$	84,449
Accrued expenses	18,158			13,782			16,561			—			48,501
Debt and capital lease obligations	—			2,234			14,128			—			16,362
Other current liabilities	—			617			3,446			—			4,063
Total current liabilities	18,158			66,335			68,882			—			153,375
Non-current liabilities:
Asset retirement obligation	—			16,966			—			—			16,966
Deferred tax liabilities	—			—			85,481			—			85,481
Debt and capital lease obligations	1,339,368			19,355			5,193			—			1,363,916
Intercompany accounts payable	—			1,999,562			2,021			(2,001,583		)	—
Other non-current liabilities	—			1,393			8,609			—			10,002
Total non-current liabilities	1,339,368			2,037,276			101,304			(2,001,583		)	1,476,365
Total liabilities	$	1,357,526		$	2,103,611		$	170,186		$	(2,001,583	)	$	1,629,740
Stockholders’ equity:
Common stock	241			—			—			—			241
Preferred stock	2			—			—			—			2
Additional paid-in capital	2,194,405			149,857			1,315,426			(1,465,283		)	2,194,405
Accumulated other comprehensive loss	(6,451		)	—			(6,451		)	6,451			(6,451		)
Accumulated deficit	(840,474		)	(366,252		)	(437,964		)	804,216			(840,474		)
Total Molycorp stockholders’ equity	1,347,723			(216,395		)	871,011			(654,616		)	1,347,723
Noncontrolling interests	—			—			29,339			—			29,339
Total stockholders’ equity	1,347,723			(216,395		)	900,350			(654,616		)	1,377,062
Total liabilities and stockholders’ equity	$	2,705,249		$	1,887,216		$	1,070,536		$	(2,656,199	)	$	3,006,802
	Three Months Ended September 30, 2014
	(In thousands)
Condensed Consolidating Statements of Operations and Comprehensive Income	Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Molycorp, Inc. consolidated
Revenues	$	—		$	19,163		$	115,150		$	(10,376	)	$	123,937
Costs of sales:
Costs excluding depreciation and amortization	—			(45,596		)	(84,413		)	10,376			(119,633		)
Depreciation and amortization	—			(16,460		)	(2,922		)	—			(19,382		)
Gross (loss) profit	—			(42,893		)	27,815			—			(15,078		)
Operating expenses:
Selling, general and administrative	(4		)	(11,233		)	(10,670		)	—			(21,907		)
Depreciation, amortization and accretion	—			(952		)	(7,141		)	—			(8,093		)
Research and development	—			(111		)	(4,242		)	—			(4,353		)
Impairment of long-lived assets	—			—			—			—			—
Operating (loss) income	(4		)	(55,189		)	5,762			—			(49,431		)
Other (expense) income:
Other (expense) income	(21,778		)	90			19,077			—			(2,611		)
Impairment of investment	—			(12,000		)	—			—			(12,000		)
Interest expense, net of capitalized interest	(33,201		)	(1,894		)	(347		)	—			(35,442		)
Interest income (expense) from intercompany notes	10,047			(537		)	(9,510		)	—			—
Equity loss from consolidated subsidiaries	(60,243		)	(3,065		)	—			63,308			—
(Loss) income before income taxes and equity earnings	(105,179		)	(72,595		)	14,982			63,308			(99,484		)
Income tax expense	—			—			(3,572		)	—			(3,572		)
Equity in loss of affiliates	—			(1,820		)	(272		)	—			(2,092		)
Net (loss) income	(105,179		)	(74,415		)	11,138			63,308			(105,148		)
Net income attributable to noncontrolling interest	—			—			(31		)	—			(31		)
Net (loss) income attributable to Molycorp stockholders	$	(105,179	)	$	(74,415	)	$	11,107		$	63,308		$	(105,179	)
Net (loss) income	$	(105,179	)	$	(74,415	)	$	11,138		$	63,308		$	(105,148	)
Other comprehensive loss:
Foreign currency translation adjustments	—			—			(8,292		)	—			(8,292		)
Comprehensive (loss) income	$	(105,179	)	$	(74,415	)	$	2,846		$	63,308		$	(113,440	)
Comprehensive (loss) income attributable to:
Molycorp stockholders	(105,179		)	(74,415		)	2,877			63,308			(113,409		)
Noncontrolling interest	—			—			(31		)	—			(31		)
	$	(105,179	)	$	(74,415	)	$	2,846		$	63,308		$	(113,440	)
Schedule of Condensed Income Statement and Comprehensive Income	'
		Three Months Ended September 30, 2014
		(In thousands)
	Condensed Consolidating Statements of Operations and Comprehensive Income	Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Molycorp, Inc. consolidated
	Revenues	$	—		$	19,163		$	115,150		$	(10,376	)	$	123,937
	Costs of sales:
	Costs excluding depreciation and amortization	—			(45,596		)	(84,413		)	10,376			(119,633		)
	Depreciation and amortization	—			(16,460		)	(2,922		)	—			(19,382		)
	Gross (loss) profit	—			(42,893		)	27,815			—			(15,078		)
	Operating expenses:
	Selling, general and administrative	(4		)	(11,233		)	(10,670		)	—			(21,907		)
	Depreciation, amortization and accretion	—			(952		)	(7,141		)	—			(8,093		)
	Research and development	—			(111		)	(4,242		)	—			(4,353		)
	Impairment of long-lived assets	—			—			—			—			—
	Operating (loss) income	(4		)	(55,189		)	5,762			—			(49,431		)
	Other (expense) income:
	Other (expense) income	(21,778		)	90			19,077			—			(2,611		)
	Impairment of investment	—			(12,000		)	—			—			(12,000		)
	Interest expense, net of capitalized interest	(33,201		)	(1,894		)	(347		)	—			(35,442		)
	Interest income (expense) from intercompany notes	10,047			(537		)	(9,510		)	—			—
	Equity loss from consolidated subsidiaries	(60,243		)	(3,065		)	—			63,308			—
	(Loss) income before income taxes and equity earnings	(105,179		)	(72,595		)	14,982			63,308			(99,484		)
	Income tax expense	—			—			(3,572		)	—			(3,572		)
	Equity in loss of affiliates	—			(1,820		)	(272		)	—			(2,092		)
	Net (loss) income	(105,179		)	(74,415		)	11,138			63,308			(105,148		)
	Net income attributable to noncontrolling interest	—			—			(31		)	—			(31		)
	Net (loss) income attributable to Molycorp stockholders	$	(105,179	)	$	(74,415	)	$	11,107		$	63,308		$	(105,179	)
	Net (loss) income	$	(105,179	)	$	(74,415	)	$	11,138		$	63,308		$	(105,148	)
	Other comprehensive loss:
	Foreign currency translation adjustments	—			—			(8,292		)	—			(8,292		)
	Comprehensive (loss) income	$	(105,179	)	$	(74,415	)	$	2,846		$	63,308		$	(113,440	)
	Comprehensive (loss) income attributable to:
	Molycorp stockholders	(105,179		)	(74,415		)	2,877			63,308			(113,409		)
	Noncontrolling interest	—			—			(31		)	—			(31		)
		$	(105,179	)	$	(74,415	)	$	2,846		$	63,308		$	(113,440	)
		Nine Months Ended September 30, 2014
		(In thousands)
	Condensed Consolidating Statements of Operations and Comprehensive Income	Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Molycorp, Inc. consolidated
	Revenues	$	—		$	48,402		$	342,201		$	(31,234	)	$	359,369
	Costs of sales:
	Costs excluding depreciation and amortization	—			(137,465		)	(252,275		)	31,234			(358,506		)
	Depreciation and amortization	—			(44,618		)	(10,990		)	—			(55,608		)
	Gross (loss) profit	—			(133,681		)	78,936			—			(54,745		)
	Operating expenses:
	Selling, general and administrative	(397		)	(29,828		)	(30,061		)	—			(60,286		)
	Depreciation, amortization and accretion	—			(3,054		)	(19,498		)	—			(22,552		)
	Research and development	—			(354		)	(11,249		)	—			(11,603		)
	Impairment of long-lived assets	—			—			—			—			—
	Operating (loss) income	(397		)	(166,917		)	18,128			—			(149,186		)
	Other (expense) income:
	Other (expense) income	(24,900		)	302			22,759			—			(1,839		)
	Impairment of investment	—			(12,000		)	—			—			(12,000		)
	Interest expense, net of capitalized interest	(107,415		)	(4,289		)	(663		)	—			(112,367		)
	Interest income (expense) from intercompany notes	30,836			(1,551		)	(29,285		)	—			—
	Equity loss from consolidated subsidiaries	(182,894		)	(4,751		)	—			187,645			—
	(Loss) income before income taxes and equity earnings	(284,770		)	(189,206		)	10,939			187,645			(275,392		)
	Income tax benefit (expense)	9,630			—			(3,868		)	—			5,762
	Equity in loss of affiliates	—			(5,119		)	(249		)	—			(5,368		)
	Net (loss) income	(275,140		)	(194,325		)	6,822			187,645			(274,998		)
	Net income attributable to noncontrolling interest	—			—			(142		)	—			(142		)
	Net (loss) income attributable to Molycorp stockholders	$	(275,140	)	$	(194,325	)	$	6,680		$	187,645		$	(275,140	)
	Net (loss) income	$	(275,140	)	$	(194,325	)	$	6,822		$	187,645		$	(274,998	)
	Other comprehensive loss:
	Foreign currency translation adjustments	—			—			(9,253		)	—			(9,253		)
Comprehensive loss	$	(275,140	)	$	(194,325	)	$	(2,431	)	$	187,645		$	(284,251	)
Comprehensive loss attributable to:
Molycorp stockholders	(275,140		)	(194,325		)	(2,289		)	187,645			(284,109		)
Noncontrolling interest	—			—			(142		)	—			(142		)
	$	(275,140	)	$	(194,325	)	$	(2,431	)	$	187,645		$	(284,251	)
	Three Months Ended September 30, 2013
	(In thousands)
Condensed Consolidating Statements of Operations and Comprehensive Income	Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Molycorp, Inc. consolidated
Revenues	$	—		$	19,237		$	142,421		$	(12,592	)	$	149,066
Costs of sales:
Costs excluding depreciation and amortization	—			(55,517		)	(107,519		)	12,592			(150,444		)
Depreciation and amortization	—			(9,336		)	(7,064		)	—			(16,400		)
Gross (loss) profit	—			(45,616		)	27,838			—			(17,778		)
Operating expenses:
Selling, general and administrative	(3		)	(15,623		)	(8,842		)	—			(24,468		)
Depreciation, amortization and accretion	—			(1,597		)	(8,475		)	—			(10,072		)
Research and development	—			(1,037		)	(4,528		)	—			(5,565		)
Impairment of long-lived assets	—			—			(1,118		)	—			(1,118		)
Operating (loss) income	(3		)	(63,873		)	4,875			—			(59,001		)
Other (expense) income:
Other income (expense)	1,731			63			(2,685		)	—			(891		)
Interest expense, net of capitalized interest	(14,093		)	(744		)	(1,452		)	—			(16,289		)
Interest income (expense) from intercompany notes	9,211			1,412			(10,623		)	—			—
Equity loss from consolidated subsidiaries	(54,858		)	(333		)	—			55,191			—
Loss before income taxes and equity earnings	(58,012		)	(63,475		)	(9,885		)	55,191			(76,181		)
Income tax (expense) benefit	(11,914		)	14,879			9,937			—			12,902
Equity in loss of affiliates	—			(1,617		)	(717		)	—			(2,334		)
Loss from continuing operations	(69,926		)	(50,213		)	(665		)	55,191			(65,613		)
Loss from discontinuing operations, net of tax	—			—			(4,186		)	—			(4,186		)
Net loss	(69,926		)	(50,213		)	(4,851		)	55,191			(69,799		)
Net income attributable to noncontrolling interest	—			—			(130		)	—			(130		)
Net loss attributable to Molycorp stockholders	$	(69,926	)	$	(50,213	)	$	(4,981	)	$	55,191		$	(69,929	)
Net loss	$	(69,926	)	$	(50,213	)	$	(4,851	)	$	55,191		$	(69,799	)
Other comprehensive loss:
Foreign currency translation adjustments	—			—			4,217			—			4,217
Comprehensive loss	$	(69,926	)	$	(50,213	)	$	(634	)	$	55,191		$	(65,582	)
Comprehensive loss attributable to:
Molycorp stockholders	(69,926		)	(50,213		)	(504		)	55,191			(65,452		)
Noncontrolling interest	—			—			(130		)	—			(130		)
	$	(69,926	)	$	(50,213	)	$	(634	)	$	55,191		$	(65,582	)
	Nine Months Ended September 30, 2013
	(In thousands)
Condensed Consolidating Statements of Operations and Comprehensive Loss	Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Molycorp, Inc. consolidated
Revenues	$	—		$	68,014		$	397,548		$	(34,982	)	$	430,580
Costs of sales:
Costs excluding depreciation and amortization	—			(147,209		)	(309,472		)	34,982			(421,699		)
Depreciation and amortization	—			(28,523		)	(20,760		)	—			(49,283		)
Gross (loss) profit	—			(107,718		)	67,316			—			(40,402		)
Operating expenses:
Selling, general and administrative	(3		)	(49,126		)	(27,573		)	—			(76,702		)
Depreciation, amortization and accretion	—			(3,258		)	(23,015		)	—			(26,273		)
Research and development	—			(4,428		)	(14,048		)	—			(18,476		)
Impairment of long-lived assets	—			—			(1,495		)	—			(1,495		)
Operating (loss) income	(3		)	(164,530		)	1,185			—			(163,348		)
Other (expense) income:
Other income	1,731			306			437			—			2,474
Interest (expense) income, net	(39,978		)	(5,039		)	2,210			—			(42,807		)
Interest income (expense) from intercompany notes	27,455			4,293			(31,748		)	—			—
Equity loss from consolidated subsidiaries	(163,247		)	(6,742		)	—			169,989			—
Loss before income taxes and equity earnings	(174,042		)	(171,712		)	(27,916		)	169,989			(203,681		)
Income tax (expense) benefit	(6,030		)	23,130			21,822			—			38,922
Equity in loss of affiliates	—			(5,239		)	(3,451		)	—			(8,690		)
Loss from continuing operations	(180,072		)	(153,821		)	(9,545		)	169,989			(173,449		)
Loss from discontinuing operations, net of tax	—			—			(5,190		)	—			(5,190		)
Net loss	(180,072		)	(153,821		)	(14,735		)	169,989			(178,639		)
Net income attributable to noncontrolling interest	—			—			(1,433		)	—			(1,433		)
Net loss attributable to Molycorp stockholders	$	(180,072	)	$	(153,821	)	$	(16,168	)	$	169,989		$	(180,072	)
Net loss	$	(180,072	)	$	(153,821	)	$	(14,735	)	$	169,989		$	(178,639	)
Other comprehensive loss:
Foreign currency translation adjustments	—			—			1,585			—			1,585
Comprehensive loss	$	(180,072	)	$	(153,821	)	$	(13,150	)	$	169,989		$	(177,054	)
Comprehensive loss attributable to:
Molycorp stockholders	(180,072		)	(153,821		)	(11,717		)	169,989			(175,621		)
Noncontrolling interest	—			—			(1,433		)	—			(1,433		)
	$	(180,072	)	$	(153,821	)	$	(13,150	)	$	169,989		$	(177,054	)
Schedule of Condensed Cash Flow Statement	'
		Nine Months Ended September 30, 2014
		(In thousands)
	Condensed Consolidating Statements of Cash Flows	Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Molycorp, Inc. consolidated
	Net cash used in operating activities	$	(25,585	)	$	(138,045	)	$	17,224		$	—		$	(146,406	)
	Cash flows from investing activities:
	Intercompany advances made	(174,993		)	(133,291		)	(58,309		)	366,593			—
	Repayments from non-guarantor	34,997			—			—			(34,997		)	—
	Loans to guarantors	—			—			(6,655		)	6,655			—
	Investment in joint ventures	—			—			(703		)	—			(703		)
	Capital expenditures	—			(56,837		)	(6,000		)	—			(62,837		)
	Recovery from insurance claims	—			12,900			—			—			12,900
	Other investing activities	—			—			460			—			460
	Net cash used in investing activities	(139,996		)	(177,228		)	(71,207		)	338,251			(50,180		)
	Cash flows from financing activities:
	Repayments of debt	—			—			(5,879		)	—			(5,879		)
	Debt issuance costs	(4,032		)	(7,605		)	(3,131		)	—			(14,768		)
	Proceeds from the Financings	50,167			139,833			60,000			—			250,000
	Partial repayment of convertible notes	(27,495		)	—			—			—			(27,495		)
	Payments of preferred dividends	(2,846		)	—			—			—			(2,846		)
	Dividend paid to noncontrolling interests	—			—			(3,170		)	—			(3,170		)
	Repayments to parent	—			—			(34,997		)	34,997			—
	Borrowing from non-guarantors	—			6,655			—			(6,655		)	—
	Intercompany advances owed	190,160			176,433			—			(366,593		)	—
	Other financing activities	(263		)	1,889			—			—			1,626
	Net cash (used in) provided by financing activities	205,691			317,205			12,823			(338,251		)	197,468
	Effect of exchange rate changes on cash	—			—			(1,722		)	—			(1,722		)
	Net change in cash and cash equivalents	40,110			1,932			(42,882		)	—			(840		)
	Cash and cash equivalents at beginning of the period	169,145			6,467			138,705			—			314,317
	Cash and cash equivalents at end of period	$	209,255		$	8,399		$	95,823		$	—		$	313,477
		Nine Months Ended September 30, 2013
		(In thousands)
	Condensed Consolidating Statements of Cash Flows	Parent			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Molycorp, Inc. consolidated
	Net cash provided by (used in) operating activities	$	(2,990	)	$	(79,888	)	$	(7,135	)	$	—		$	(90,013	)
	Cash flows from investing activities:
	Loans to guarantor	—			—			(40,000		)	40,000			—
	Loans to parent	—			—			(12,800		)	12,800			—
	Intercompany advances made	(438,374		)	—			—			438,374			—
	Loans to non-guarantor	—			(1,300		)	—			1,300			—
	Repayments from non-guarantor	38,000			264			—			(38,264		)	—
	Investment in joint ventures	—			(3,423		)	—			—			(3,423		)
	Capital expenditures	—			(320,829		)	(13,768		)	—			(334,597		)
	Other investing activities	—			—			(364		)	—			(364		)
	Net cash used in investing activities	(400,374		)	(325,288		)	(66,932		)	454,210			(338,384		)
	Cash flows from financing activities:
	Repayments of debt	—			—			(25,990		)	—			(25,990		)
	Net proceeds from sale of common stock	248,150			—			—			—			248,150
	Issuance of 5.50% Convertible Notes	165,600			—			—			—			165,600
	Payments of preferred dividends	(8,539		)	—			—			—			(8,539		)
	Dividend paid to noncontrolling interests	—			—			(4,472		)	—			(4,472		)
	Borrowings from non-guarantor	12,800			40,000			—			(52,800		)	—
	Borrowing from guarantor	—			—			1,300			(1,300		)	—
	Repayments to parent	—			—			(38,000		)	38,000			—
	Repayment to guarantor	—			—			(264		)	264			—
	Intercompany advances owed	—			356,867			81,507			(438,374		)	—
	Other financing activities	—			(797		)	—			—			(797		)
	Net cash provided by (used in) financing activities	418,011			396,070			14,081			(454,210		)	373,952
	Effect of exchange rate changes on cash	—			—			569			—			569
	Net change in cash and cash equivalents	14,647			(9,106		)	(59,417		)	—			(53,876		)
	Cash and cash equivalents at beginning of the period	16,560			18,020			193,210			—			227,790
	Cash and cash equivalents at end of period	$	31,207		$	8,914		$	133,793		$	—		$	173,914

Liquidity_and_Capital_Requirem1

Liquidity and Capital Requirements (Details) (USD $)	0 Months Ended	9 Months Ended				0 Months Ended
	Aug. 06, 2014	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Sep. 11, 2014	Sep. 11, 2014	Sep. 30, 2014	Sep. 30, 2014
						12.00% Term Loans and 12.00% Equipment Financing, Senior Secured Notes	Financing Available to be Drawn until April 30, 2016	Molycorp Mountain Pass facility	Maintenance and Other Expansion Capital Expenditures
Capital Expenditures [Line Items]	'	'	'	'	'	'	'	'	'
Cash and cash equivalents	'	$313,477,000	$173,914,000	$314,317,000	$227,790,000	'	'	'	'
Estimated future capital expenditures remainder of 2014	'	'	'	'	'	'	'	25,000,000	5,000,000
Estimated capital expenditures in 2015	'	'	'	'	'	'	'	30,000,000	30,000,000
Debt and Lease Financing Commitment Capacity	400,000,000	'	'	'	'	'	149,800,000	'	'
Proceeds from the Financings	'	250,000,000	0	'	'	250,000,000	'	'	'
Financing available if conditions are met	'	'	'	'	'	'	$134,800,000	'	'

Segment_Information_Details

Segment Information (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
					segment
Segment Information	'		'		'		'
Number of reportable segments	'		'		4		'
Revenues	$123,937		$149,066		$359,369		$430,580
Total revenues	123,937		149,066		359,369		430,580
Operating (loss) income	-49,431		-59,001		-149,186		-163,348
Other (expense) income	-2,611		-891		-1,839		2,474
Impairment of investment	12,000		0		12,000		0
Interest expense, net of capitalized interest	-35,442		-16,289		-112,367		-42,807
Loss before income taxes and equity earnings	-99,484		-76,181		-275,392		-203,681
Eliminations	'		'		'		'
Segment Information	'		'		'		'
Total revenues	-17,424	[1]	-16,032	[1]	-49,445	[1]	-46,644	[1]
Operating (loss) income	-419	[1]	723	[1]	-957	[1]	-1,101	[1]
Reportable Segments | Resources	'		'		'		'
Segment Information	'		'		'		'
Revenues	4,509		4,655		9,951		30,235
Total revenues	13,933		13,513		39,533		48,403
OIBDA	-31,087		-44,673		-97,831		-104,519
Depreciation, amortization and accretion	-17,332		-10,853		-47,432		-31,536
Operating (loss) income	-48,419		-55,526		-145,263		-136,055
Reportable Segments | Chemicals and Oxides	'		'		'		'
Segment Information	'		'		'		'
Revenues	36,814		50,791		122,521		135,180
Total revenues	43,472		57,965		138,659		163,656
OIBDA	4,251		4,561		12,388		-2,792
Depreciation, amortization and accretion	-3,823		-5,960		-11,605		-17,087
Operating (loss) income	428		-1,399		783		-19,879
Reportable Segments | Magnetic Materials and Alloys	'		'		'		'
Segment Information	'		'		'		'
Revenues	61,345		72,626		169,260		193,417
Total revenues	62,687		72,626		172,985		193,417
OIBDA	13,715		18,520		39,203		48,823
Depreciation, amortization and accretion	-4,232		-7,458		-12,730		-20,360
Operating (loss) income	9,483		11,062		26,473		28,463
Reportable Segments | Rare Metals	'		'		'		'
Segment Information	'		'		'		'
Revenues	21,269		20,994		57,637		71,748
Total revenues	21,269		20,994		57,637		71,748
OIBDA	595		-911		1,265		3,947
Depreciation, amortization and accretion	-2,034		-2,144		-6,228		-6,402
Operating (loss) income	-1,439		-3,055		-4,963		-2,455
Eliminations | Resources	'		'		'		'
Segment Information	'		'		'		'
Revenues	9,424		8,858		29,582		18,168
Eliminations | Chemicals and Oxides	'		'		'		'
Segment Information	'		'		'		'
Revenues	6,658		7,174		16,138		28,476
Eliminations | Magnetic Materials and Alloys	'		'		'		'
Segment Information	'		'		'		'
Revenues	1,342		0		3,725		0
Eliminations | Rare Metals	'		'		'		'
Segment Information	'		'		'		'
Revenues	0		0		0		0
Eliminations | Eliminations	'		'		'		'
Segment Information	'		'		'		'
Revenues	-17,424	[1]	-16,032	[1]	-49,445	[1]	-46,644	[1]
Corporate and other | Corporate and other	'		'		'		'
Segment Information	'		'		'		'
Operating (loss) income	-9,065	[2]	-10,806	[2]	-25,259	[2]	-32,321	[2]
Other Nonoperating Income (Expense) | Boulder Wind Power, Inc.	'		'		'		'
Segment Information	'		'		'		'
Impairment of investment	$12,000		'		$12,000		'
[1]	Consist of inter-segment sales and gross profits eliminations as well as eliminations of lower of cost or market adjustments related to inter-segment inventory.
[2]	Includes business development costs, personnel costs, stock-based compensation, accounting and legal fees, occupancy expense, information technology costs and interest expense.

Inventory_Details

Inventory (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current:	'	'
Concentrate stockpiles	$0	$24
Raw materials	52,215	42,627
Work in process	25,254	41,962
Finished goods	62,397	65,662
Materials and supplies	27,070	21,508
Total current	166,936	171,783
Long-term:	'	'
Concentrate stockpiles	0	4
Raw materials	25,530	25,325
Total long-term	$25,530	$25,329

Inventory_Schedule_of_Charges_

Inventory (Schedule of Charges to Cost of Sales Based on Normal Production Levels and Write-Down of Inventory) (Details) (USD $)	3 Months Ended				9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Inventory [Line Items]	'		'		'		'
Production costs expended that would have been allocated to additional tons produced	$28,889	[1]	$18,249	[1]	$71,436	[1]	$65,743	[1]
Inventory write-downs	'		'		51,638		74,475
Charges to cost of sales based on production levels and write-down of inventory	43,665		44,766		123,074		140,217
Rare earth metals	'		'		'		'
Inventory [Line Items]	'		'		'		'
Inventory write-downs	14,776	[2]	19,633	[2]	50,296	[2]	60,733	[2]
Stockpile	'		'		'		'
Inventory [Line Items]	'		'		'		'
Inventory write-downs	$0	[3]	$6,884	[3]	$1,342	[3]	$13,741	[3]
[1]	Relates to production costs that would have been inventoriable had we been operating at normal production levels. In all periods presented, the majority of these production costs related to the Resources segment.
[2]	Due to the decline in some rare earths prices and low inventory turnover.
[3]	Adjustments of the estimated REO content in the stockpile at the Resources segment.

Property_Plant_and_Equipment_n2

Property, Plant and Equipment, net (Details) (USD $)	3 Months Ended			9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013	Sep. 30, 2014		Sep. 30, 2013	Dec. 31, 2013
Property, Plant and Equipment [Line Items]	'		'	'		'	'
Capitalized expenditures related to plant modernization and other capitalized costs	$17,800,000		$83,000,000	$47,300,000		$281,300,000	'
Interest costs capitalized	'		20,300,000	'		61,200,000	'
Property, plant and equipment at cost	1,897,323,000		'	1,897,323,000		'	1,865,552,000
Less accumulated depreciation	-160,451,000		'	-160,451,000		'	-102,678,000
Property, plant and equipment, net	1,736,872,000		'	1,736,872,000		'	1,762,874,000
Land	'		'	'		'	'
Property, Plant and Equipment [Line Items]	'		'	'		'	'
Property, plant and equipment at cost	12,045,000		'	12,045,000		'	12,822,000
Land improvements	'		'	'		'	'
Property, Plant and Equipment [Line Items]	'		'	'		'	'
Property, plant and equipment at cost	304,659,000		'	304,659,000		'	327,029,000
Buildings and improvements	'		'	'		'	'
Property, Plant and Equipment [Line Items]	'		'	'		'	'
Property, plant and equipment at cost	609,337,000		'	609,337,000		'	418,510,000
Plant and equipment	'		'	'		'	'
Property, Plant and Equipment [Line Items]	'		'	'		'	'
Property, plant and equipment at cost	509,562,000		'	509,562,000		'	288,603,000
Vehicles	'		'	'		'	'
Property, Plant and Equipment [Line Items]	'		'	'		'	'
Property, plant and equipment at cost	2,982,000		'	2,982,000		'	2,986,000
Computer software	'		'	'		'	'
Property, Plant and Equipment [Line Items]	'		'	'		'	'
Property, plant and equipment at cost	12,573,000		'	12,573,000		'	12,424,000
Furnitures and fixtures	'		'	'		'	'
Property, Plant and Equipment [Line Items]	'		'	'		'	'
Property, plant and equipment at cost	1,196,000		'	1,196,000		'	1,044,000
Construction in progress	'		'	'		'	'
Property, Plant and Equipment [Line Items]	'		'	'		'	'
Property, plant and equipment at cost	394,572,000	[1]	'	394,572,000	[1]	'	755,107,000	[1]
Natural gas delivery facility under capital lease	'		'	'		'	'
Property, Plant and Equipment [Line Items]	'		'	'		'	'
Natural gas delivery facility under capital lease	15,658,000		'	15,658,000		'	15,658,000
Mining equipment under capital lease	'		'	'		'	'
Property, Plant and Equipment [Line Items]	'		'	'		'	'
Property, plant and equipment at cost	10,982,000		'	10,982,000		'	7,370,000
Mineral properties	'		'	'		'	'
Property, Plant and Equipment [Line Items]	'		'	'		'	'
Property, plant and equipment at cost	$23,757,000		'	$23,757,000		'	$23,999,000
[1]	Primarily related to expenditures at the Mountain Pass facility.

Debt_and_Capital_Lease_Obligat2

Debt and Capital Lease Obligations (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Aug. 31, 2012
In Thousands, unless otherwise specified
Long-term Debt, Current and Noncurrent [Abstract]	'	'	'
Current portion of debt outstanding	$9,609	$14,128	'
Noncurrent portion of debt outstanding	1,562,755	1,344,561	'
Capital lease obligations, current	3,160	2,234	'
Capital lease obligations, Noncurrent	20,047	19,355	'
Total debt and Capital lease obligations, Current	12,769	16,362	'
Total debt and Capital lease obligations, Non-Current	1,582,802	1,363,916	'
Long-term Debt, by Maturity [Abstract]	'	'	'
Remainder of 2014	2,040	'	'
2015	7,997	'	'
2016	207,331	'	'
2017	412,573	'	'
2018	172,500	'	'
Thereafter	971,154	'	'
Total	1,773,595	'	'
Capital Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]	'	'	'
Remainder of 2014	2,069	'	'
2015	8,278	'	'
2016	8,278	'	'
2017	7,161	'	'
2018	5,770	'	'
Thereafter	18,195	'	'
Total	49,751	'	'
Notes Payable to Banks	'	'	'
Long-term Debt, Current and Noncurrent [Abstract]	'	'	'
Current portion of debt outstanding	9,609	14,128	'
Noncurrent portion of debt outstanding	1,486	2,699	'
Weighted average interest rate	3.43%	3.59%	'
Convertible Debt | 3.25% Convertible Notes, net of discount, due June 2016	'	'	'
Debt Instrument [Line Items]	'	'	'
Interest rate	3.25%	'	'
Long-term Debt, Current and Noncurrent [Abstract]	'	'	'
Current portion of debt outstanding	0	0	'
Noncurrent portion of debt outstanding	191,743	207,028	'
Convertible Debt | 6.00% Convertible Notes, net of discount, due September 2017	'	'	'
Debt Instrument [Line Items]	'	'	'
Interest rate	6.00%	'	6.00%
Long-term Debt, Current and Noncurrent [Abstract]	'	'	'
Current portion of debt outstanding	0	0	'
Noncurrent portion of debt outstanding	355,614	346,708	'
Convertible Debt | 5.50% Convertible Notes, net of discount, due February 2018	'	'	'
Debt Instrument [Line Items]	'	'	'
Interest rate	5.50%	'	'
Long-term Debt, Current and Noncurrent [Abstract]	'	'	'
Current portion of debt outstanding	0	0	'
Noncurrent portion of debt outstanding	152,084	148,198	'
Convertible Subordinated Debt | 5.00% Debentures, net of discount, due December 2017	'	'	'
Debt Instrument [Line Items]	'	'	'
Interest rate	5.00%	'	'
Long-term Debt, Current and Noncurrent [Abstract]	'	'	'
Current portion of debt outstanding	0	0	'
Noncurrent portion of debt outstanding	2,129	2,493	'
Senior Notes | 12.00% Senior Secured Notes, Term Loans, Due September 2019	'	'	'
Debt Instrument [Line Items]	'	'	'
Interest rate	12.00%	'	'
Long-term Debt, Current and Noncurrent [Abstract]	'	'	'
Current portion of debt outstanding	0	0	'
Noncurrent portion of debt outstanding	96,595	0	'
Senior Notes | 12.00% Equipment Financing, due September 2019	'	'	'
Debt Instrument [Line Items]	'	'	'
Interest rate	12.00%	'	'
Long-term Debt, Current and Noncurrent [Abstract]	'	'	'
Current portion of debt outstanding	0	0	'
Noncurrent portion of debt outstanding	124,583	0	'
Senior Notes | 10.00% Senior Notes, net of discount, due June 2020	'	'	'
Debt Instrument [Line Items]	'	'	'
Interest rate	10.00%	'	'
Long-term Debt, Current and Noncurrent [Abstract]	'	'	'
Current portion of debt outstanding	0	0	'
Noncurrent portion of debt outstanding	$638,521	$637,435	'

Debt_and_Capital_Lease_Obligat3

Debt and Capital Lease Obligations Term Loans and Equipment Financing (Details) (USD $)

0 Months Ended

9 Months Ended

0 Months Ended

0 Months Ended

0 Months Ended

9 Months Ended

0 Months Ended

3 Months Ended

9 Months Ended

Aug. 06, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 11, 2014

Dec. 31, 2013

Sep. 11, 2014

Sep. 30, 2014

Sep. 11, 2014

Sep. 11, 2014

Sep. 11, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 11, 2014

Sep. 30, 2014

Dec. 31, 2013

Aug. 31, 2012

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 11, 2014

Sep. 11, 2014

Sep. 30, 2014

Sep. 11, 2014

Sep. 11, 2014

Sep. 30, 2014

Sep. 11, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

12.00% Term Loans and 12.00% Equipment Financing, Senior Secured Notes

12.00% Term Loans and 12.00% Equipment Financing, Senior Secured Notes

12.00% Term Loans and 12.00% Equipment Financing, Senior Secured Notes

Financing Available to be Drawn until April 30, 2016

Convertible Debt

Convertible Debt

Convertible Debt

Convertible Debt

Convertible Debt

Convertible Debt

Convertible Debt

Convertible Debt

Convertible Debt

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Senior Notes

Other Expense

Other Expense

Amount to be Repaid when Due and Payable

Amount to be Repaid when Due and Payable

Amount to be Repaid when Due and Payable

3.25% Convertible Notes, net of discount, due June 2016

3.25% Convertible Notes, net of discount, due June 2016

3.25% Convertible Notes, net of discount, due June 2016

6.00% Convertible Notes, net of discount, due September 2017

6.00% Convertible Notes, net of discount, due September 2017

6.00% Convertible Notes, net of discount, due September 2017

6.00% Convertible Notes, net of discount, due September 2017

5.50% Convertible Notes, net of discount, due February 2018

5.50% Convertible Notes, net of discount, due February 2018

Parent Term Loan

Parent Term Loan

Magnequench Term Loan

Term Loans

Term Loans

12.00% Equipment Financing, due September 2019

12.00% Equipment Financing, due September 2019

12.00% Equipment Financing, due September 2019

12.00% Equipment Financing, due September 2019

10.00% Senior Notes, net of discount, due June 2020

10.00% Senior Notes, net of discount, due June 2020

12.00% Senior Secured Notes, Term Loans, Due September 2019

12.00% Senior Secured Notes, Term Loans, Due September 2019

12.00% Term Loans and 12.00% Equipment Financing, Senior Secured Notes

12.00% Term Loans and 12.00% Equipment Financing, Senior Secured Notes

Convertible Debt

Convertible Debt

Convertible Debt

T

3.25% Convertible Notes, net of discount, due June 2016

6.00% Convertible Notes, net of discount, due September 2017

5.50% Convertible Notes, net of discount, due February 2018

Debt Instrument [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from the Financings

'

$250,000,000

$0

'

'

$250,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Financing commitment capacity

400,000,000

'

'

'

'

'

'

'

149,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Financing available if conditions are met

'

'

'

'

'

'

'

'

134,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net proceeds from the Financings

'

'

'

'

'

207,700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Partial repayment of convertible notes

'

27,495,000

0

'

'

'

'

'

'

23,500,000

'

'

4,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate

'

'

'

'

'

'

'

'

'

'

3.25%

'

'

6.00%

'

6.00%

5.50%

'

'

'

'

12.00%

'

'

12.00%

'

'

10.00%

'

12.00%

'

'

'

'

'

'

Commitment yield enhancement

'

'

'

'

'

8,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Transaction costs

'

'

'

'

'

'

'

6,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Loss on extinguishment of debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,300,000

2,300,000

'

'

'

Long-term Debt, Commitment Capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

185,000,000

75,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Secured Long-term Debt, Noncurrent

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50,200,000

60,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term Debt, Conditions to be Met, Unused Borrowing Capacity, Amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

134,800,000

'

15,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term Debt, Conditions to be Met, Minimum Borrowing Capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50,000,000

'

5,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Condition to be Met, EBITDA

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

20,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Condition to be Met, Production Facility Capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

4,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Annual interest rate applied to unpaid principal balance

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7.00%

'

'

7.00%

'

'

'

'

'

'

'

'

'

'

Imputed interest rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.00%

'

'

5.00%

'

'

'

'

'

'

'

'

'

'

Unused capacity, commitment fee percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Principal amount

'

'

'

'

'

'

'

'

'

'

206,505,000

230,000,000

'

410,000,000

414,000,000

'

172,500,000

172,500,000

'

'

'

'

'

'

'

'

'

650,000,000

650,000,000

'

'

'

'

40,000,000

80,000,000

40,000,000

Early Payment Premium Percentage

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percent of principal, prior to first anniversary

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

43.80%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percent of principal, prior to second anniversary

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

33.70%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percent of principal, prior to third anniversary

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

23.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percent of principal, prior to fourth anniversary

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percent of principal, after to fourth anniversary

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percent of principal

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Proceeds from sale of equipment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

139,800,000

'

'

'

'

'

'

'

'

'

'

'

'

Lessor Leasing Arrangements, Operating Leases, Term of Contract

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

'

'

'

'

'

'

'

'

'

'

Minimum Lease Payments, Sale Leaseback Transactions, Fiscal Year Maturity [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Annual rent payment in the first year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10,100,000

'

'

'

'

'

'

'

'

'

'

Annual rent payment in the second year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10,700,000

'

'

'

'

'

'

'

'

'

'

Annual rent payment in the third year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11,200,000

'

'

'

'

'

'

'

'

'

'

Annual rent payment in the fourth year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

11,800,000

'

'

'

'

'

'

'

'

'

'

Annual rent payment in the fifth year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

12,400,000

'

'

'

'

'

'

'

'

'

'

Additional payment on the five-year anniversary

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

179,900,000

'

'

'

'

'

'

'

'

'

'

Possible rental adjustment, years two through five

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

18,000,000

'

'

'

'

'

'

'

'

'

'

Possible rental adjustment, additional payment on five-year anniversary

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

147,000,000

'

'

'

'

'

'

'

'

'

'

Warrants issued

'

'

'

24,477,359

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reconciliation of Principal to Net Carrying Value [Abstract]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Principal amount

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

140,069,000

[1]

'

'

'

'

110,473,000

[1]

'

'

'

'

'

'

Unamortized debt discount

'

'

'

'

'

'

'

28,200,000

'

'

14,762,000

22,972,000

'

54,386,000

67,292,000

'

20,416,000

24,302,000

'

'

'

'

1,700,000

'

15,486,000

'

'

11,479,000

12,565,000

13,878,000

'

'

'

'

'

'

Net carrying amount

'

1,562,755,000

'

'

1,344,561,000

'

'

'

'

'

191,743,000

207,028,000

'

355,614,000

346,708,000

'

152,084,000

148,198,000

'

'

'

'

'

'

124,583,000

'

0

638,521,000

637,435,000

96,595,000

0

'

'

'

'

'

Maximum Principal Amount of Debt Secured by the Pari Passu Collateral

'

'

'

'

'

'

$300,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

[1]

Includes PIK interest accretion.

Debt_and_Capital_Lease_Obligat4

Debt and Capital Lease Obligations Convertible Notes and Senior Secured Obligations (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Aug. 31, 2012
Debt Instrument [Line Items]	'	'	'	'	'	'
Net carrying amount	$1,562,755,000	'	$1,562,755,000	'	$1,344,561,000	'
Equity component of convertible debt	'	'	'	21,815,000	'	'
Additional Paid-In Capital	'	'	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'	'	'
Equity component of convertible debt	'	'	'	21,815,000	'	'
Convertible Debt | 3.25% Convertible Notes, net of discount, due June 2016	'	'	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'	'	'
Principal amount	206,505,000	'	206,505,000	'	230,000,000	'
Unamortized debt discount	-14,762,000	'	-14,762,000	'	-22,972,000	'
Net carrying amount	191,743,000	'	191,743,000	'	207,028,000	'
Interest cost	3,935,000	3,988,000	12,063,000	11,839,000	'	'
Interest rate	3.25%	'	3.25%	'	'	'
Convertible Debt | 6.00% Convertible Notes, net of discount, due September 2017	'	'	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'	'	'
Principal amount	410,000,000	'	410,000,000	'	414,000,000	'
Unamortized debt discount	-54,386,000	'	-54,386,000	'	-67,292,000	'
Net carrying amount	355,614,000	'	355,614,000	'	346,708,000	'
Interest cost	10,710,000	9,969,000	31,135,000	29,691,000	'	'
Interest rate	6.00%	'	6.00%	'	'	6.00%
Convertible Debt | 5.50% Convertible Notes, net of discount, due February 2018	'	'	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'	'	'
Principal amount	172,500,000	'	172,500,000	'	172,500,000	'
Unamortized debt discount	-20,416,000	'	-20,416,000	'	-24,302,000	'
Net carrying amount	152,084,000	'	152,084,000	'	148,198,000	'
Interest cost	3,711,000	3,609,000	11,046,000	9,482,000	'	'
Interest rate	5.50%	'	5.50%	'	'	'
Convertible Debt | Additional Paid-In Capital | 3.25% Convertible Notes, net of discount, due June 2016	'	'	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'	'	'
Equity component of convertible debt	'	'	36,227,000	'	'	'
Convertible Debt | Additional Paid-In Capital | 6.00% Convertible Notes, net of discount, due September 2017	'	'	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'	'	'
Equity component of convertible debt	'	'	68,695,000	'	'	'
Convertible Debt | Additional Paid-In Capital | 5.50% Convertible Notes, net of discount, due February 2018	'	'	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'	'	'
Equity component of convertible debt	'	'	21,815,000	'	'	'
Senior Notes | 10.00% Senior Notes, net of discount, due June 2020	'	'	'	'	'	'
Debt Instrument [Line Items]	'	'	'	'	'	'
Principal amount	650,000,000	'	650,000,000	'	650,000,000	'
Unamortized debt discount	-11,479,000	'	-11,479,000	'	-12,565,000	'
Net carrying amount	638,521,000	'	638,521,000	'	637,435,000	'
Interest cost	16,658,000	16,622,000	49,942,000	49,837,000	'	'
Interest rate	10.00%	'	10.00%	'	'	'
Debt Instrument, Collateral, Excluded Assets, Asset Fair Market Value, Maximum	$15,000,000	'	$15,000,000	'	'	'
Debt Instrument, Collateral, Excluded Assets, Cash Collateral for Line of Credits or Hedging Obligations, Maximum	105.00%	'	105.00%	'	'	'
Debt Instruments, Collateral, Excluded Assets, Voting Stock of Foreign Subsidiaries, Percent, Minimum	65.00%	'	65.00%	'	'	'

Income_Taxes_Narrative_Details

Income Taxes Narrative (Details) (USD $)	3 Months Ended			9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'	'	'	'	'
Effective income tax rate	-3.60%	'	16.90%	2.10%	19.10%
Income Tax Expense (Benefit)	'	($9.60)	'	'	'

Stockholders_Equity_Details

Stockholders' Equity (Details) (USD $)	9 Months Ended			0 Months Ended	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Mar. 01, 2014	Dec. 31, 2013	Mar. 01, 2014
				Series A Mandatory Convertible Preferred Stock	Series A Mandatory Convertible Preferred Stock	Common Stock
Class of Stock [Line Items]	'	'	'	'	'	'
Common shares issued	244,864,742	'	240,380,138	'	'	'
Preferred stock outstanding	'	'	'	'	2,070,000	'
Dividend rate	'	'	'	'	5.50%	'
Conversion rate for preferred stock to common stock	'	'	'	'	'	2
Shares issued upon conversion of preferred stock	'	'	'	'	'	4,140,000
Cash dividend declared and paid	$2,846	$8,539	'	$2,800	'	'

Stockholders_Equity_Warrants_D

Stockholders' Equity Warrants (Details) (USD $)	0 Months Ended
In Millions, except Share data, unless otherwise specified	Sep. 11, 2014	Sep. 11, 2014
Class of Warrant or Right [Line Items]	'	'
Warrants issued	24,477,359	24,477,359
Penny Warrants [Member]	'	'
Class of Warrant or Right [Line Items]	'	'
Warrants issued	'	18,358,019
Exercise price	'	$0.01
Fair value of warrants	'	$24.70
Term (years)	'5 years	'
Stock price	'	$1.55
Risk-free interest rate	1.79%	'
Volatility	82.60%	'
Dividend yield	0.00%	'
Fair Value, Discount for Lack of Marketability	9.00%	'
Fair Value Assumptions, Application of Discount for Lack of Marketability, Share Price	'	$1.40
Strike Warrants	'	'
Class of Warrant or Right [Line Items]	'	'
Warrants issued	'	6,119,340
Exercise price	'	$2.04
Term (years)	'5 years	'
Stock price	'	$1.55
Risk-free interest rate	1.79%	'
Volatility	49.90%	'
Dividend yield	0.00%	'
Fair Value, Discount for Lack of Marketability	31.00%	'
Fair Value Assumptions, Application of Discount for Lack of Marketability, Share Price	'	$0.57

Stockholders_Equity_ShareLendi

Stockholders' Equity Share-Lending Arrangements (Details) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

In Thousands, except Share data, unless otherwise specified

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Dec. 31, 2013

Jun. 30, 2014

Jan. 31, 2013

Aug. 31, 2012

Sep. 30, 2014

Aug. 31, 2012

Sep. 30, 2014

Sep. 30, 2014

Aug. 31, 2012

Sep. 30, 2014

Jan. 31, 2013

Restatement Adjustment

Common Stock

Common Stock

Convertible Debt

Convertible Debt

Convertible Debt

Convertible Debt Securities

Convertible Debt Securities

Convertible Debt Securities

Convertible Debt Securities

Own-share Lending Arrangement

6.00% Convertible Notes, net of discount, due September 2017

6.00% Convertible Notes, net of discount, due September 2017

5.50% Convertible Notes, net of discount, due February 2018

6.00% Convertible Notes, net of discount, due September 2017

6.00% Convertible Notes, net of discount, due September 2017

5.50% Convertible Notes, net of discount, due February 2018

5.50% Convertible Notes, net of discount, due February 2018

Class of Stock [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate

'

'

'

'

'

'

'

'

6.00%

6.00%

5.50%

'

'

'

5.50%

Own-share Lending Arrangement, Shares, Outstanding

'

'

'

'

'

'

6,666,666

13,800,000

'

'

'

'

'

'

'

Fair value

$4,687

'

$4,687

'

'

'

'

'

'

'

'

$3,001

$18,100

$1,686

$6,600

Unamortized issuance cost

15,129

'

15,129

'

'

'

'

'

'

'

'

10,624

'

4,505

'

Interest cost expensed

1,250

'

6,183

'

'

'

'

'

'

'

'

'

'

'

'

Interest cost capitalized

0

'

3,378

'

'

'

'

'

'

'

'

'

'

'

'

Error Corrections and Prior Period Adjustments Restatement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Other non-current assets

34,203

'

34,203

'

7,043

16,381

'

'

'

'

'

'

'

'

'

Property, plant and equipment, net

1,736,872

'

1,736,872

'

1,762,874

3,378

'

'

'

'

'

'

'

'

'

Additional paid-in capital

2,232,390

'

2,232,390

'

2,194,405

15,062

'

'

'

'

'

'

'

'

'

Interest expense, net of capitalized interest

35,442

16,289

112,367

42,807

'

4,933

'

'

'

'

'

'

'

'

'

Income tax benefit

($3,572)

$12,902

$5,762

$38,922

'

$9,630

'

'

'

'

'

'

'

'

'

Stockholders_Equity_Accumulate

Stockholders' Equity Accumulated Other Comprehensive Income (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]	'	'
Balance at beginning of the period	($6,451)	($9,433)
Change in other comprehensive loss before reclassifications	-9,253	1,585
Net income (loss) reclassified from AOCI	0	0
Balance at end of the period	-15,704	-7,848
Foreign currency translation adjustments	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]	'	'
Balance at beginning of the period	-6,638	-8,261
Change in other comprehensive loss before reclassifications	-9,253	1,585
Net income (loss) reclassified from AOCI	0	0
Balance at end of the period	-15,891	-6,676
Postretirement benefit liability	'	'
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]	'	'
Balance at beginning of the period	187	-1,172
Change in other comprehensive loss before reclassifications	0	0
Net income (loss) reclassified from AOCI	0	0
Balance at end of the period	$187	($1,172)

Loss_per_Share_Basic_and_Dilut

Loss per Share Basic and Diluted Loss per Share (Details) (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2013
Earnings Per Share [Abstract]	'	'
Loss from Discontinued Operations, Per Basic Share	$0.02	$0.03
Loss from Discontinued Operations, Per Diluted Share	$0.02	$0.03

Activity_Related_to_Restricted

Activity Related to Restricted Stock-based Awards (Details) (USD $)	9 Months Ended
	Sep. 30, 2014
PBRSUs	'
Number of Shares	'
Unvested at the beginning of the period (in shares)	697,797
Granted (in shares)	755,283
Forfeited (in shares)	-9,052
Vested (in shares)	0
Unvested at the end of the period (in shares)	1,444,028
Weighted Average Grant-Date Price	'
Unvested shares at the beginning of the period (in dollars per share)	$7.45
Granted (in dollars per share)	$5.10
Forfeited (in dollars per share)	$5.45
Vested (in dollars per share)	$0
Unvested shares at the end of the period (in dollars per share)	$6.19
RSUs	'
Number of Shares	'
Unvested at the beginning of the period (in shares)	1,076,385
Granted (in shares)	750,289
Forfeited (in shares)	-64,123
Vested (in shares)	-60,196
Unvested at the end of the period (in shares)	1,702,355
Weighted Average Grant-Date Price	'
Unvested shares at the beginning of the period (in dollars per share)	$9.81
Granted (in dollars per share)	$4.22
Forfeited (in dollars per share)	$8.84
Vested (in dollars per share)	$26.85
Unvested shares at the end of the period (in dollars per share)	$6.78

Commitments_and_Contingencies_1

Commitments and Contingencies Operating Leases (Details) (USD $)	Sep. 30, 2014
In Thousands, unless otherwise specified
Remaining annual minimum payments under operating leases	'
Operating lease obligations, total minimum payments	$5,846
Operating lease obligations, Less Than 1 Year	2,113
Operating lease obligations, 1 -3 Years	2,396
Operating lease obligations, 4 - 5 Years	498
Operating lease obligations, More Than 5 Years	$839

Commitments_and_Contingencies_2

Commitments and Contingencies Purchase Commitments (Details) (USD $)	Sep. 30, 2014
In Thousands, unless otherwise specified
Commitments and Contingencies Disclosure [Abstract]	'
Purchase Obligation	$75,804
Purchase Obligation, Due in Next Twelve Months	75,804
Purchase Obligation, Due in Second and Third Year	0
Purchase Obligation, Due in Fourth and Fifth Year	0
Purchase Obligation, Due after Fifth Year	$0

Commitments_and_Contingencies_3

Commitments and Contingencies Narrative (Details)	1 Months Ended		12 Months Ended
	Aug. 31, 2013	Jul. 31, 2012	Dec. 31, 2012
	Class Action Lawsuits filed in US District Court for the Southern District of New York	Pending Litigation	Pending Litigation
	lawsuit	Purported Class Action	Derivative Lawsuit
		claim	lawsuit
Plant Modernization and Expansion Commitments	'	'	'
Loss Contingency, Pending Claims, Number	'	18	'
Number of class action lawsuits filed	2	'	2

Concentrations_Details

Concentrations (Details) (USD $)

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

3 Months Ended

9 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Product Concentration

Product Concentration

Product Concentration

Product Concentration

Product Concentration

Product Concentration

Product Concentration

Product Concentration

Product Concentration

Product Concentration

Product Concentration

Product Concentration

Product Concentration

Product Concentration

Magnetic Materials and Alloys

Magnetic Materials and Alloys

Cerium products

Cerium products

Cerium products

Cerium products

Neo Powders

Neo Powders

Neo Powders

Neo Powders

Neo Powders

Neo Powders

Neo Powders

Neo Powders

Daido Electronics

Daido Electronics

Chemicals and Oxides

Chemicals and Oxides

Chemicals and Oxides

Chemicals and Oxides

Magnetic Materials and Alloys

Magnetic Materials and Alloys

Magnetic Materials and Alloys

Magnetic Materials and Alloys

Magnetic Materials and Alloys

Magnetic Materials and Alloys

Magnetic Materials and Alloys

Magnetic Materials and Alloys

Daido Electronics

Daido Electronics

Daido Electronics

Daido Electronics

Concentrations

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Entity-wide revenue, major customers

'

'

'

'

'

'

12.00%

8.00%

11.00%

10.00%

45.00%

45.00%

45.00%

40.00%

'

'

'

'

Sales, net of intercompany transactions

$123,937,000

$149,066,000

$359,369,000

$430,580,000

'

'

'

'

'

'

'

'

'

'

$18,600,000

$16,300,000

$45,800,000

$39,200,000

Accounts Receivable, Related Parties

'

'

'

'

$6,300,000

$7,500,000

'

'

'

'

'

'

'

'

'

'

'

'

RelatedParty_Transactions_Deta

Related-Party Transactions (Details) (Keli, Metals, USD $)	3 Months Ended		9 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Keli | Metals	'	'	'	'
Related Party Transactions	'	'	'	'
Purchases made from related party	$15	$20.40	$50.60	$44.80

Net_Change_in_Operating_Assets2

Net Change in Operating Assets and Liabilities (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Decrease (increase) in operating assets:	'	'
Trade accounts receivable	$8,301	($5,557)
Inventory	-50,057	26,816
Prepaid expenses and other current assets	-3,368	-1,085
Increase (decrease) in operating liabilities:	'	'
Trade accounts payable	-10,641	-16,642
Income tax payable	2,346	-8,768
Interest payable	30,467	-26,765
Asset retirement obligation	-1,415	-2,385
Accrued expenses	11,309	-10,826
Net change in operating assets and liabilities	($13,058)	($45,212)

Fair_Value_of_Financial_Instru2

Fair Value of Financial Instruments (Details) (USD $)

0 Months Ended

3 Months Ended

9 Months Ended

Sep. 11, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Dec. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Dec. 31, 2013

12.00% Term Loans and 12.00% Equipment Financing, Senior Secured Notes

Strike Warrants

Strike Warrants

Fair Value, Measurements, Recurring

Fair Value, Measurements, Recurring

Fair Value, Measurements, Recurring

Fair Value, Measurements, Recurring

Fair Value, Measurements, Recurring

Fair Value, Measurements, Recurring

Fair Value, Measurements, Recurring

Fair Value, Measurements, Recurring

Fair Value, Measurements, Recurring

Fair Value, Measurements, Recurring

Fair Value, Measurements, Recurring

Fair Value, Measurements, Recurring

Fair Value, Measurements, Recurring

Fair Value, Measurements, Recurring

Fair Value, Measurements, Recurring

Fair Value, Measurements, Recurring

Fair Value, Measurements, Recurring

Fair Value, Measurements, Recurring

Interest Expense

Interest Expense

Level 1

Level 1

Level 1

Level 1

Level 1

Level 1

Level 2

Level 2

Level 2

Level 2

Level 2

Level 2

Level 3

Level 3

Level 3

Level 3

Level 3

Level 3

Springing Maturity on 12.00% Term Loans

Strike Warrants

Share Purchase Agreement

Share Purchase Agreement

Springing Maturity on 12.00% Term Loans

Strike Warrants

Share Purchase Agreement

Share Purchase Agreement

Springing Maturity on 12.00% Term Loans

Strike Warrants

Share Purchase Agreement

Share Purchase Agreement

Assets:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash equivalents

'

'

'

$212,728,000

$179,052,000

'

'

'

'

$0

$0

'

'

'

'

$0

$0

'

'

'

'

Liabilities:

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Derivative liabilities

'

'

'

'

'

0

0

0

0

'

'

0

0

0

0

'

'

1,694,000

2,510,000

6,057,000

6,089,000

Fair Value Inputs, Probability Factor

5.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gain

'

$1,000,000

$1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair_Value_of_Financial_Instru3

Fair Value of Financial Instruments Liability Carrying and Fair Value (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Total long-term debt, carrying value	$1,773,595	'
Carrying Value	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Total long-term debt, carrying value	1,337,962	1,339,369
Fair Value	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Total long-term debt, fair value	777,355	1,285,106
Convertible Debt | 3.25% Convertible Notes, net of discount, due June 2016 | Carrying Value	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Total long-term debt, carrying value	191,743	207,028
Convertible Debt | 6.00% Convertible Notes, net of discount, due September 2017 | Carrying Value	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Total long-term debt, carrying value	355,614	346,708
Convertible Debt | 5.50% Convertible Notes, net of discount, due February 2018 | Carrying Value	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Total long-term debt, carrying value	152,084	148,198
Senior Notes | 10.00% Senior Notes, net of discount, due June 2020 | Carrying Value	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Total long-term debt, carrying value	638,521	637,435
Level 1 | Convertible Debt | 3.25% Convertible Notes, net of discount, due June 2016 | Fair Value	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Total long-term debt, fair value	128,033	161,771
Level 1 | Convertible Debt | 6.00% Convertible Notes, net of discount, due September 2017 | Fair Value	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Total long-term debt, fair value	139,400	312,570
Level 1 | Convertible Debt | 5.50% Convertible Notes, net of discount, due February 2018 | Fair Value	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Total long-term debt, fair value	61,422	164,015
Level 1 | Senior Notes | 10.00% Senior Notes, net of discount, due June 2020 | Fair Value	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Total long-term debt, fair value	$448,500	$646,750

Fair_Value_of_Financial_Instru4

Fair Value of Financial Instruments Principal Payments (Details) (Convertible Debt, USD $)	0 Months Ended
In Millions, unless otherwise specified	Sep. 11, 2014	Sep. 30, 2014	Aug. 31, 2012
3.25% Convertible Notes, net of discount, due June 2016	'	'	'
Debt Instrument [Line Items]	'	'	'
Repayments of long-term debt	$23.50	'	'
Interest rate	'	3.25%	'
6.00% Convertible Notes, net of discount, due September 2017	'	'	'
Debt Instrument [Line Items]	'	'	'
Repayments of long-term debt	$4	'	'
Interest rate	'	6.00%	6.00%

Condensed_Consolidating_Balanc

Condensed Consolidating Balance Sheet (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:	'	'	'	'
Cash and cash equivalents	$313,477	$314,317	$173,914	$227,790
Trade accounts receivable, net	53,229	61,757	'	'
Inventory	166,936	171,783	'	'
Prepaid expenses and other current assets	27,175	29,210	'	'
Total current assets	560,817	577,067	'	'
Non-current assets:	'	'	'	'
Deposits	29,999	25,997	'	'
Property, plant and equipment, net	1,736,872	1,762,874	'	'
Inventory	25,530	25,329	'	'
Intangible assets, net	312,878	330,867	'	'
Investments	32,210	48,875	'	'
Goodwill	228,750	228,750	'	'
Investments in consolidated subsidiaries	0	0	'	'
Intercompany accounts receivable	0	0	'	'
Other non-current assets	34,203	7,043	'	'
Total non-current assets	2,400,442	2,429,735	'	'
Total assets	2,961,259	3,006,802	'	'
Current liabilities:	'	'	'	'
Trade accounts payable	58,272	84,449	'	'
Accrued expenses	66,727	48,501	'	'
Debt and capital lease obligations	12,769	16,362	'	'
Other current liabilities	6,922	4,063	'	'
Total current liabilities	144,690	153,375	'	'
Non-current liabilities:	'	'	'	'
Asset retirement obligation	16,681	16,966	'	'
Deferred tax liabilities	75,162	85,481	'	'
Debt and capital lease obligations	1,582,802	1,363,916	'	'
Intercompany accounts payable	0	0	'	'
Other non-current liabilities	14,286	10,002	'	'
Total non-current liabilities	1,688,931	1,476,365	'	'
Total liabilities	1,833,621	1,629,740	'	'
Stockholders’ equity:	'	'	'	'
Common stock	245	241	'	'
Preferred stock	0	2	'	'
Additional paid-in capital	2,232,390	2,194,405	'	'
Accumulated other comprehensive loss	-15,704	-6,451	-7,848	-9,433
Accumulated deficit	-1,115,614	-840,474	'	'
Total Molycorp stockholders’ equity	1,101,317	1,347,723	'	'
Noncontrolling interests	26,321	29,339	'	'
Total stockholders’ equity	1,127,638	1,377,062	1,325,095	1,251,258
Total liabilities and stockholders’ equity	2,961,259	3,006,802	'	'
Parent	'	'	'	'
Current assets:	'	'	'	'
Cash and cash equivalents	209,255	169,145	31,207	16,560
Trade accounts receivable, net	0	0	'	'
Inventory	0	0	'	'
Prepaid expenses and other current assets	0	0	'	'
Total current assets	209,255	169,145	'	'
Non-current assets:	'	'	'	'
Deposits	1,756	1,754	'	'
Property, plant and equipment, net	0	0	'	'
Inventory	0	0	'	'
Intangible assets, net	0	0	'	'
Investments	0	0	'	'
Goodwill	0	0	'	'
Investments in consolidated subsidiaries	340,620	532,767	'	'
Intercompany accounts receivable	1,943,181	2,001,583	'	'
Other non-current assets	17,701	0	'	'
Total non-current assets	2,303,258	2,536,104	'	'
Total assets	2,512,513	2,705,249	'	'
Current liabilities:	'	'	'	'
Trade accounts payable	0	0	'	'
Accrued expenses	25,048	18,158	'	'
Debt and capital lease obligations	0	0	'	'
Other current liabilities	0	0	'	'
Total current liabilities	25,048	18,158	'	'
Non-current liabilities:	'	'	'	'
Asset retirement obligation	0	0	'	'
Deferred tax liabilities	0	0	'	'
Debt and capital lease obligations	1,381,945	1,339,368	'	'
Intercompany accounts payable	0	0	'	'
Other non-current liabilities	4,203	0	'	'
Total non-current liabilities	1,386,148	1,339,368	'	'
Total liabilities	1,411,196	1,357,526	'	'
Stockholders’ equity:	'	'	'	'
Common stock	245	241	'	'
Preferred stock	'	2	'	'
Additional paid-in capital	2,232,390	2,194,405	'	'
Accumulated other comprehensive loss	-15,704	-6,451	'	'
Accumulated deficit	-1,115,614	-840,474	'	'
Total Molycorp stockholders’ equity	1,101,317	1,347,723	'	'
Noncontrolling interests	0	0	'	'
Total stockholders’ equity	1,101,317	1,347,723	'	'
Total liabilities and stockholders’ equity	2,512,513	2,705,249	'	'
Guarantor Subsidiaries	'	'	'	'
Current assets:	'	'	'	'
Cash and cash equivalents	8,399	6,467	8,914	18,020
Trade accounts receivable, net	4,360	4,990	'	'
Inventory	34,217	32,307	'	'
Prepaid expenses and other current assets	15,028	15,833	'	'
Total current assets	62,004	59,597	'	'
Non-current assets:	'	'	'	'
Deposits	28,243	24,243	'	'
Property, plant and equipment, net	1,607,027	1,620,851	'	'
Inventory	25,530	25,329	'	'
Intangible assets, net	393	442	'	'
Investments	17,016	34,134	'	'
Goodwill	0	0	'	'
Investments in consolidated subsidiaries	117,098	121,849	'	'
Intercompany accounts receivable	0	0	'	'
Other non-current assets	7,929	771	'	'
Total non-current assets	1,803,236	1,827,619	'	'
Total assets	1,865,240	1,887,216	'	'
Current liabilities:	'	'	'	'
Trade accounts payable	30,434	49,702	'	'
Accrued expenses	18,159	13,782	'	'
Debt and capital lease obligations	3,160	2,234	'	'
Other current liabilities	352	617	'	'
Total current liabilities	52,105	66,335	'	'
Non-current liabilities:	'	'	'	'
Asset retirement obligation	16,681	16,966	'	'
Deferred tax liabilities	0	0	'	'
Debt and capital lease obligations	144,638	19,355	'	'
Intercompany accounts payable	2,061,122	1,999,562	'	'
Other non-current liabilities	1,414	1,393	'	'
Total non-current liabilities	2,223,855	2,037,276	'	'
Total liabilities	2,275,960	2,103,611	'	'
Stockholders’ equity:	'	'	'	'
Common stock	0	0	'	'
Preferred stock	'	0	'	'
Additional paid-in capital	149,857	149,857	'	'
Accumulated other comprehensive loss	0	0	'	'
Accumulated deficit	-560,577	-366,252	'	'
Total Molycorp stockholders’ equity	-410,720	-216,395	'	'
Noncontrolling interests	0	0	'	'
Total stockholders’ equity	-410,720	-216,395	'	'
Total liabilities and stockholders’ equity	1,865,240	1,887,216	'	'
Non-Guarantor Subsidiaries	'	'	'	'
Current assets:	'	'	'	'
Cash and cash equivalents	95,823	138,705	133,793	193,210
Trade accounts receivable, net	48,869	56,767	'	'
Inventory	132,719	139,476	'	'
Prepaid expenses and other current assets	12,147	13,377	'	'
Total current assets	289,558	348,325	'	'
Non-current assets:	'	'	'	'
Deposits	0	0	'	'
Property, plant and equipment, net	129,845	142,023	'	'
Inventory	0	0	'	'
Intangible assets, net	312,485	330,425	'	'
Investments	15,194	14,741	'	'
Goodwill	228,750	228,750	'	'
Investments in consolidated subsidiaries	0	0	'	'
Intercompany accounts receivable	117,941	0	'	'
Other non-current assets	8,573	6,272	'	'
Total non-current assets	812,788	722,211	'	'
Total assets	1,102,346	1,070,536	'	'
Current liabilities:	'	'	'	'
Trade accounts payable	27,838	34,747	'	'
Accrued expenses	23,520	16,561	'	'
Debt and capital lease obligations	9,609	14,128	'	'
Other current liabilities	6,570	3,446	'	'
Total current liabilities	67,537	68,882	'	'
Non-current liabilities:	'	'	'	'
Asset retirement obligation	0	0	'	'
Deferred tax liabilities	75,162	85,481	'	'
Debt and capital lease obligations	56,219	5,193	'	'
Intercompany accounts payable	0	2,021	'	'
Other non-current liabilities	8,669	8,609	'	'
Total non-current liabilities	140,050	101,304	'	'
Total liabilities	207,587	170,186	'	'
Stockholders’ equity:	'	'	'	'
Common stock	0	0	'	'
Preferred stock	'	0	'	'
Additional paid-in capital	1,315,426	1,315,426	'	'
Accumulated other comprehensive loss	-15,704	-6,451	'	'
Accumulated deficit	-431,284	-437,964	'	'
Total Molycorp stockholders’ equity	868,438	871,011	'	'
Noncontrolling interests	26,321	29,339	'	'
Total stockholders’ equity	894,759	900,350	'	'
Total liabilities and stockholders’ equity	1,102,346	1,070,536	'	'
Eliminations	'	'	'	'
Current assets:	'	'	'	'
Cash and cash equivalents	0	0	0	0
Trade accounts receivable, net	0	0	'	'
Inventory	0	0	'	'
Prepaid expenses and other current assets	0	0	'	'
Total current assets	0	0	'	'
Non-current assets:	'	'	'	'
Deposits	0	0	'	'
Property, plant and equipment, net	0	0	'	'
Inventory	0	0	'	'
Intangible assets, net	0	0	'	'
Investments	0	0	'	'
Goodwill	0	0	'	'
Investments in consolidated subsidiaries	-457,718	-654,616	'	'
Intercompany accounts receivable	-2,061,122	-2,001,583	'	'
Other non-current assets	0	0	'	'
Total non-current assets	-2,518,840	-2,656,199	'	'
Total assets	-2,518,840	-2,656,199	'	'
Current liabilities:	'	'	'	'
Trade accounts payable	0	0	'	'
Accrued expenses	0	0	'	'
Debt and capital lease obligations	0	0	'	'
Other current liabilities	0	0	'	'
Total current liabilities	0	0	'	'
Non-current liabilities:	'	'	'	'
Asset retirement obligation	0	0	'	'
Deferred tax liabilities	0	0	'	'
Debt and capital lease obligations	0	0	'	'
Intercompany accounts payable	-2,061,122	-2,001,583	'	'
Other non-current liabilities	0	0	'	'
Total non-current liabilities	-2,061,122	-2,001,583	'	'
Total liabilities	-2,061,122	-2,001,583	'	'
Stockholders’ equity:	'	'	'	'
Common stock	0	0	'	'
Preferred stock	'	0	'	'
Additional paid-in capital	-1,465,283	-1,465,283	'	'
Accumulated other comprehensive loss	15,704	6,451	'	'
Accumulated deficit	991,861	804,216	'	'
Total Molycorp stockholders’ equity	-457,718	-654,616	'	'
Noncontrolling interests	0	0	'	'
Total stockholders’ equity	-457,718	-654,616	'	'
Total liabilities and stockholders’ equity	($2,518,840)	($2,656,199)	'	'

Condensed_Consolidating_Statem

Condensed Consolidating Statement of Operations and Comprehensive Income (Details) (USD $)	3 Months Ended		9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Revenues	$123,937	$149,066	$359,369	$430,580
Costs of sales:	'	'	'	'
Costs excluding depreciation and amortization	-119,633	-150,444	-358,506	-421,699
Depreciation and amortization	-19,382	-16,400	-55,608	-49,283
Gross loss	-15,078	-17,778	-54,745	-40,402
Operating expenses:	'	'	'	'
Selling, general and administrative	-21,907	-24,468	-60,286	-76,702
Depreciation, amortization and accretion	-8,093	-10,072	-22,552	-26,273
Research and development	-4,353	-5,565	-11,603	-18,476
Impairment of long-lived assets	0	-1,118	0	-1,495
Operating loss	-49,431	-59,001	-149,186	-163,348
Other (expenses) income:	'	'	'	'
Other (expense) income	-2,611	-891	-1,839	2,474
Impairment of investment	-12,000	0	-12,000	0
Interest expense, net of capitalized interest	-35,442	-16,289	-112,367	-42,807
Interest income (expense) from intercompany notes	0	0	0	0
Equity loss from consolidated subsidiaries	0	0	0	0
Loss before income taxes and equity earnings	-99,484	-76,181	-275,392	-203,681
Income tax (expense) benefit	-3,572	12,902	5,762	38,922
Equity in loss of affiliates	-2,092	-2,334	-5,368	-8,690
Loss from continuing operations	-105,148	-65,613	-274,998	-173,449
Loss from discontinuing operations, net of tax	0	-4,186	0	-5,190
Net loss	-105,148	-69,799	-274,998	-178,639
Net income attributable to noncontrolling interests	-31	-130	-142	-1,433
Net loss attributable to Molycorp stockholders	-105,179	-69,929	-275,140	-180,072
Other comprehensive (loss) income:	'	'	'	'
Foreign currency translation adjustments	-8,292	4,217	-9,253	1,585
Comprehensive loss	-113,440	-65,582	-284,251	-177,054
Comprehensive loss attributable to:	'	'	'	'
Molycorp stockholders	-113,409	-65,452	-284,109	-175,621
Noncontrolling interest	-31	-130	-142	-1,433
Parent	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Revenues	0	0	0	0
Costs of sales:	'	'	'	'
Costs excluding depreciation and amortization	0	0	0	0
Depreciation and amortization	0	0	0	0
Gross loss	0	0	0	0
Operating expenses:	'	'	'	'
Selling, general and administrative	-4	-3	-397	-3
Depreciation, amortization and accretion	0	0	0	0
Research and development	0	0	0	0
Impairment of long-lived assets	0	0	0	0
Operating loss	-4	-3	-397	-3
Other (expenses) income:	'	'	'	'
Other (expense) income	-21,778	1,731	-24,900	1,731
Impairment of investment	0	'	0	'
Interest expense, net of capitalized interest	-33,201	-14,093	-107,415	-39,978
Interest income (expense) from intercompany notes	10,047	9,211	30,836	27,455
Equity loss from consolidated subsidiaries	-60,243	-54,858	-182,894	-163,247
Loss before income taxes and equity earnings	-105,179	-58,012	-284,770	-174,042
Income tax (expense) benefit	0	-11,914	9,630	-6,030
Equity in loss of affiliates	0	0	0	0
Loss from continuing operations	'	-69,926	'	-180,072
Loss from discontinuing operations, net of tax	'	0	'	0
Net loss	-105,179	-69,926	-275,140	-180,072
Net income attributable to noncontrolling interests	0	0	0	0
Net loss attributable to Molycorp stockholders	-105,179	-69,926	-275,140	-180,072
Other comprehensive (loss) income:	'	'	'	'
Foreign currency translation adjustments	0	0	0	0
Comprehensive loss	-105,179	-69,926	-275,140	-180,072
Comprehensive loss attributable to:	'	'	'	'
Molycorp stockholders	-105,179	-69,926	-275,140	-180,072
Noncontrolling interest	0	0	0	0
Guarantor Subsidiaries	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Revenues	19,163	19,237	48,402	68,014
Costs of sales:	'	'	'	'
Costs excluding depreciation and amortization	-45,596	-55,517	-137,465	-147,209
Depreciation and amortization	-16,460	-9,336	-44,618	-28,523
Gross loss	-42,893	-45,616	-133,681	-107,718
Operating expenses:	'	'	'	'
Selling, general and administrative	-11,233	-15,623	-29,828	-49,126
Depreciation, amortization and accretion	-952	-1,597	-3,054	-3,258
Research and development	-111	-1,037	-354	-4,428
Impairment of long-lived assets	0	0	0	0
Operating loss	-55,189	-63,873	-166,917	-164,530
Other (expenses) income:	'	'	'	'
Other (expense) income	90	63	302	306
Impairment of investment	-12,000	'	-12,000	'
Interest expense, net of capitalized interest	-1,894	-744	-4,289	-5,039
Interest income (expense) from intercompany notes	-537	1,412	-1,551	4,293
Equity loss from consolidated subsidiaries	-3,065	-333	-4,751	-6,742
Loss before income taxes and equity earnings	-72,595	-63,475	-189,206	-171,712
Income tax (expense) benefit	0	14,879	0	23,130
Equity in loss of affiliates	-1,820	-1,617	-5,119	-5,239
Loss from continuing operations	'	-50,213	'	-153,821
Loss from discontinuing operations, net of tax	'	0	'	0
Net loss	-74,415	-50,213	-194,325	-153,821
Net income attributable to noncontrolling interests	0	0	0	0
Net loss attributable to Molycorp stockholders	-74,415	-50,213	-194,325	-153,821
Other comprehensive (loss) income:	'	'	'	'
Foreign currency translation adjustments	0	0	0	0
Comprehensive loss	-74,415	-50,213	-194,325	-153,821
Comprehensive loss attributable to:	'	'	'	'
Molycorp stockholders	-74,415	-50,213	-194,325	-153,821
Noncontrolling interest	0	0	0	0
Non-Guarantor Subsidiaries	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Revenues	115,150	142,421	342,201	397,548
Costs of sales:	'	'	'	'
Costs excluding depreciation and amortization	-84,413	-107,519	-252,275	-309,472
Depreciation and amortization	-2,922	-7,064	-10,990	-20,760
Gross loss	27,815	27,838	78,936	67,316
Operating expenses:	'	'	'	'
Selling, general and administrative	-10,670	-8,842	-30,061	-27,573
Depreciation, amortization and accretion	-7,141	-8,475	-19,498	-23,015
Research and development	-4,242	-4,528	-11,249	-14,048
Impairment of long-lived assets	0	-1,118	0	-1,495
Operating loss	5,762	4,875	18,128	1,185
Other (expenses) income:	'	'	'	'
Other (expense) income	19,077	-2,685	22,759	437
Impairment of investment	0	'	0	'
Interest expense, net of capitalized interest	-347	-1,452	-663	2,210
Interest income (expense) from intercompany notes	-9,510	-10,623	-29,285	-31,748
Equity loss from consolidated subsidiaries	0	0	0	0
Loss before income taxes and equity earnings	14,982	-9,885	10,939	-27,916
Income tax (expense) benefit	-3,572	9,937	-3,868	21,822
Equity in loss of affiliates	-272	-717	-249	-3,451
Loss from continuing operations	'	-665	'	-9,545
Loss from discontinuing operations, net of tax	'	-4,186	'	-5,190
Net loss	11,138	-4,851	6,822	-14,735
Net income attributable to noncontrolling interests	-31	-130	-142	-1,433
Net loss attributable to Molycorp stockholders	11,107	-4,981	6,680	-16,168
Other comprehensive (loss) income:	'	'	'	'
Foreign currency translation adjustments	-8,292	4,217	-9,253	1,585
Comprehensive loss	2,846	-634	-2,431	-13,150
Comprehensive loss attributable to:	'	'	'	'
Molycorp stockholders	2,877	-504	-2,289	-11,717
Noncontrolling interest	-31	-130	-142	-1,433
Eliminations	'	'	'	'
Condensed Financial Statements, Captions [Line Items]	'	'	'	'
Revenues	-10,376	-12,592	-31,234	-34,982
Costs of sales:	'	'	'	'
Costs excluding depreciation and amortization	10,376	12,592	31,234	34,982
Depreciation and amortization	0	0	0	0
Gross loss	0	0	0	0
Operating expenses:	'	'	'	'
Selling, general and administrative	0	0	0	0
Depreciation, amortization and accretion	0	0	0	0
Research and development	0	0	0	0
Impairment of long-lived assets	0	0	0	0
Operating loss	0	0	0	0
Other (expenses) income:	'	'	'	'
Other (expense) income	0	0	0	0
Impairment of investment	0	'	0	'
Interest expense, net of capitalized interest	0	0	0	0
Interest income (expense) from intercompany notes	0	0	0	0
Equity loss from consolidated subsidiaries	63,308	55,191	187,645	169,989
Loss before income taxes and equity earnings	63,308	55,191	187,645	169,989
Income tax (expense) benefit	0	0	0	0
Equity in loss of affiliates	0	0	0	0
Loss from continuing operations	'	55,191	'	169,989
Loss from discontinuing operations, net of tax	'	0	'	0
Net loss	63,308	55,191	187,645	169,989
Net income attributable to noncontrolling interests	0	0	0	0
Net loss attributable to Molycorp stockholders	63,308	55,191	187,645	169,989
Other comprehensive (loss) income:	'	'	'	'
Foreign currency translation adjustments	0	0	0	0
Comprehensive loss	63,308	55,191	187,645	169,989
Comprehensive loss attributable to:	'	'	'	'
Molycorp stockholders	63,308	55,191	187,645	169,989
Noncontrolling interest	$0	$0	$0	$0

Condensed_Consolidating_Statem1

Condensed Consolidating Statements of Cash Flows (Details) (USD $)	9 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash provided by (used in) operating activities	($146,406)	($90,013)
Cash flows from investing activities:	'	'
Loans to guarantor	0	0
Loans to parent	'	0
Intercompany advances made	0	0
Loans to non-guarantor	'	0
Repayments from non-guarantor	0	0
Investment in joint ventures	-703	-3,423
Capital expenditures	-62,837	-334,597
Recovery from insurance claims	12,900	0
Other investing activities	460	-364
Net cash used in investing activities	-50,180	-338,384
Cash flows from financing activities:	'	'
Repayments of debt	-5,879	-25,990
Debt issuance costs	-14,768	0
Proceeds from the Financings	250,000	0
Partial repayment of convertible notes	-27,495	0
Net proceeds from sale of common stock	0	248,150
Issuance of 5.50% Convertible Notes	0	165,600
Payments of preferred dividends	-2,846	-8,539
Dividend paid to noncontrolling interests	-3,170	-4,472
Borrowings from non-guarantor	0	0
Borrowing from guarantor	'	0
Repayments to parent	0	0
Repayment to guarantor	'	0
Intercompany advances owed	0	0
Other financing activities	1,626	-797
Net cash (used in) provided by financing activities	197,468	373,952
Effect of exchange rate changes on cash	-1,722	569
Net change in cash and cash equivalents	-840	-53,876
Cash and cash equivalents at beginning of the period	314,317	227,790
Cash and cash equivalents at end of period	313,477	173,914
Parent	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash provided by (used in) operating activities	-25,585	-2,990
Cash flows from investing activities:	'	'
Loans to guarantor	0	0
Loans to parent	'	0
Intercompany advances made	-174,993	-438,374
Loans to non-guarantor	'	0
Repayments from non-guarantor	34,997	38,000
Investment in joint ventures	0	0
Capital expenditures	0	0
Recovery from insurance claims	0	'
Other investing activities	0	0
Net cash used in investing activities	-139,996	-400,374
Cash flows from financing activities:	'	'
Repayments of debt	0	0
Debt issuance costs	-4,032	'
Proceeds from the Financings	50,167	'
Partial repayment of convertible notes	-27,495	'
Net proceeds from sale of common stock	'	248,150
Issuance of 5.50% Convertible Notes	'	165,600
Payments of preferred dividends	-2,846	-8,539
Dividend paid to noncontrolling interests	0	0
Borrowings from non-guarantor	0	12,800
Borrowing from guarantor	'	0
Repayments to parent	0	0
Repayment to guarantor	'	0
Intercompany advances owed	190,160	0
Other financing activities	-263	0
Net cash (used in) provided by financing activities	205,691	418,011
Effect of exchange rate changes on cash	0	0
Net change in cash and cash equivalents	40,110	14,647
Cash and cash equivalents at beginning of the period	169,145	16,560
Cash and cash equivalents at end of period	209,255	31,207
Guarantor Subsidiaries	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash provided by (used in) operating activities	-138,045	-79,888
Cash flows from investing activities:	'	'
Loans to guarantor	0	0
Loans to parent	'	0
Intercompany advances made	-133,291	0
Loans to non-guarantor	'	-1,300
Repayments from non-guarantor	0	264
Investment in joint ventures	0	-3,423
Capital expenditures	-56,837	-320,829
Recovery from insurance claims	12,900	'
Other investing activities	0	0
Net cash used in investing activities	-177,228	-325,288
Cash flows from financing activities:	'	'
Repayments of debt	0	0
Debt issuance costs	-7,605	'
Proceeds from the Financings	139,833	'
Partial repayment of convertible notes	0	'
Net proceeds from sale of common stock	'	0
Issuance of 5.50% Convertible Notes	'	0
Payments of preferred dividends	0	0
Dividend paid to noncontrolling interests	0	0
Borrowings from non-guarantor	6,655	40,000
Borrowing from guarantor	'	0
Repayments to parent	0	0
Repayment to guarantor	'	0
Intercompany advances owed	176,433	356,867
Other financing activities	1,889	-797
Net cash (used in) provided by financing activities	317,205	396,070
Effect of exchange rate changes on cash	0	0
Net change in cash and cash equivalents	1,932	-9,106
Cash and cash equivalents at beginning of the period	6,467	18,020
Cash and cash equivalents at end of period	8,399	8,914
Non-Guarantor Subsidiaries	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash provided by (used in) operating activities	17,224	-7,135
Cash flows from investing activities:	'	'
Loans to guarantor	-6,655	-40,000
Loans to parent	'	-12,800
Intercompany advances made	-58,309	0
Loans to non-guarantor	'	0
Repayments from non-guarantor	0	0
Investment in joint ventures	-703	0
Capital expenditures	-6,000	-13,768
Recovery from insurance claims	0	'
Other investing activities	460	-364
Net cash used in investing activities	-71,207	-66,932
Cash flows from financing activities:	'	'
Repayments of debt	-5,879	-25,990
Debt issuance costs	-3,131	'
Proceeds from the Financings	60,000	'
Partial repayment of convertible notes	0	'
Net proceeds from sale of common stock	'	0
Issuance of 5.50% Convertible Notes	'	0
Payments of preferred dividends	0	0
Dividend paid to noncontrolling interests	-3,170	-4,472
Borrowings from non-guarantor	0	0
Borrowing from guarantor	'	1,300
Repayments to parent	-34,997	-38,000
Repayment to guarantor	'	-264
Intercompany advances owed	0	81,507
Other financing activities	0	0
Net cash (used in) provided by financing activities	12,823	14,081
Effect of exchange rate changes on cash	-1,722	569
Net change in cash and cash equivalents	-42,882	-59,417
Cash and cash equivalents at beginning of the period	138,705	193,210
Cash and cash equivalents at end of period	95,823	133,793
Eliminations	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net cash provided by (used in) operating activities	0	0
Cash flows from investing activities:	'	'
Loans to guarantor	6,655	40,000
Loans to parent	'	12,800
Intercompany advances made	366,593	438,374
Loans to non-guarantor	'	1,300
Repayments from non-guarantor	-34,997	-38,264
Investment in joint ventures	0	0
Capital expenditures	0	0
Recovery from insurance claims	0	'
Other investing activities	0	0
Net cash used in investing activities	338,251	454,210
Cash flows from financing activities:	'	'
Repayments of debt	0	0
Debt issuance costs	0	'
Proceeds from the Financings	0	'
Partial repayment of convertible notes	0	'
Net proceeds from sale of common stock	'	0
Issuance of 5.50% Convertible Notes	'	0
Payments of preferred dividends	0	0
Dividend paid to noncontrolling interests	0	0
Borrowings from non-guarantor	-6,655	-52,800
Borrowing from guarantor	'	-1,300
Repayments to parent	34,997	38,000
Repayment to guarantor	'	264
Intercompany advances owed	-366,593	-438,374
Other financing activities	0	0
Net cash (used in) provided by financing activities	-338,251	-454,210
Effect of exchange rate changes on cash	0	0
Net change in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of the period	0	0
Cash and cash equivalents at end of period	$0	$0

Impairment_of_Investment_Detai

Impairment of Investment (Details) (USD $)	3 Months Ended		9 Months Ended				3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Sep. 30, 2011	Sep. 30, 2014	Sep. 30, 2014
					Boulder Wind Power, Inc.	Boulder Wind Power, Inc.	Boulder Wind Power, Inc.	Boulder Wind Power, Inc.
							Other Nonoperating Income (Expense)	Other Nonoperating Income (Expense)
Schedule of Cost-method Investments [Line Items]	'	'	'	'	'	'	'	'
Cost Method Investments	'	'	'	'	$12,000,000	$20,000,000	'	'
Impairment of investment	$12,000,000	$0	$12,000,000	$0	'	'	$12,000,000	$12,000,000