WESTMORELAND COAL (WLBAQ) 10-Q 25 Apr 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2014	Apr. 23, 2014
Document Documentand Entity Information [Abstract]	'	'
Entity Registrant Name	'WESTMORELAND COAL Co	'
Entity Central Index Key	'0000106455	'
Document Type	'10-Q	'
Document Period End Date	31-Mar-14	'
Amendment Flag	'false	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	15,072,421

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$61,900	$61,110
Receivables:	'	'
Trade	64,715	66,196
Contractual third-party reclamation receivables	8,213	8,487
Other	1,375	5,086
Total receivables	74,303	79,769
Inventories	35,447	39,972
Restricted investments and bond collateral	16,900	5,998
Other current assets	16,643	18,190
Total current assets	205,193	205,039
Property, plant and equipment:	'	'
Land and mineral rights	278,198	278,188
Plant and equipment	673,189	657,696
Gross property, plant and equipment	951,387	935,884
Less accumulated depreciation, depletion and amortization	461,754	445,848
Net property, plant and equipment	489,633	490,036
Advanced coal royalties	7,263	7,311
Reclamation deposits	75,315	74,921
Total restricted investments and bond collateral, less current portion	523,483	69,235
Contractual third-party reclamation receivables, less current portion	88,036	88,303
Intangible assets, net of accumulated amortization of $14.5 million and $14.1 million at March 31, 2014 and December 31, 2013, respectively	1,099	1,520
Other assets	17,125	10,320
Total Assets	1,407,147	946,685
Current liabilities:	'	'
Current installments of long-term debt	48,586	44,343
Accounts payable and accrued expenses:	'	'
Trade	62,598	57,507
Production taxes	46,794	41,905
Workers' compensation	712	717
Postretirement medical benefits	13,955	13,955
SERP	390	390
Deferred revenue	16,034	14,068
Asset retirement obligations	22,227	23,353
Other current liabilities	24,390	16,790
Total current liabilities	235,686	213,028
Long-term debt, less current installments	751,645	295,494
Workers' compensation, less current portion	6,680	6,744
Excess of black lung benefit obligation over trust assets	9,376	8,675
Postretirement medical benefits, less current portion	271,275	270,374
Pension and SERP obligations, less current portion	23,524	24,176
Deferred revenue, less current portion	43,299	46,567
Asset retirement obligations, less current portion	259,036	256,511
Intangible liabilities, net of accumulated amortization of $12.7 million and $12.4 million at March 31, 2014 and December 31, 2013, respectively	5,339	5,606
Other liabilities	7,503	7,389
Total liabilities	1,613,363	1,134,564
Shareholders' deficit:	'	'
Preferred stock of $1.00 par value Authorized 5,000,000 shares; Issued and outstanding 121,223 shares at March 31, 2014 and 159,960 at December 31, 2013	121	160
Common stock of $2.50 par value Authorized 30,000,000 shares; Issued and outstanding 14,862,595 shares at March 31, 2014 and 14,592,231 shares at December 31, 2013	37,155	36,479
Other paid-in capital	134,952	134,861
Accumulated other comprehensive loss	-63,369	-63,595
Accumulated deficit	-315,075	-295,784
Total shareholders’ deficit	-206,216	-187,879
Total Liabilities and Shareholders' Deficit	$1,407,147	$946,685

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Millions, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Intangible assets, accumulated amortization	$14.50	$14.10
Intangible liabilities, accumulated amortization	$12.70	$12.40
Preferred stock, par value (in USD per share)	$1	$1
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	121,223	159,960
Preferred stock, shares outstanding	121,223	159,960
Common stock, par value (in USD per share)	$2.50	$2.50
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	14,862,595	14,592,231
Common stock, shares outstanding	14,862,595	14,592,231

Consolidated_Statements_of_Ope

Consolidated Statements of Operations (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Income Statement [Abstract]	'	'
Revenues	$180,202	$161,448
Costs, expenses and other:	'	'
Cost of sales	138,630	130,421
Depreciation, depletion and amortization	16,059	14,426
Selling and administrative	13,331	11,887
Heritage health benefit expenses	3,544	3,951
Loss (gain) on sales of assets	38	-234
Restructuring charges	397	0
Other operating loss (income)	150	-4,737
Total costs, expenses and other	172,149	155,714
Operating income	8,053	5,734
Other income (expense):	'	'
Interest expense	-20,798	-10,160
Interest income	302	297
Loss on foreign exchange	-6,790	0
Other income	93	70
Total other income (expense)	-27,193	-9,793
Loss before income taxes	-19,140	-4,059
Income tax expense (benefit)	-110	28
Net loss	-19,030	-4,087
Less net loss attributable to noncontrolling interest	0	-1,702
Net loss attributable to the Parent company	-19,030	-2,385
Less preferred stock dividend requirements	261	340
Net loss applicable to common shareholders	($19,291)	($2,725)
Net loss per share applicable to common shareholders:	'	'
Basic and diluted (in dollars per share)	($1.30)	($0.19)
Weighted average number of common shares outstanding:	'	'
Basic and diluted (shares)	14,787	14,282

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (Loss) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]	'	'
Net loss	($19,030)	($4,087)
Other comprehensive income (loss):	'	'
Amortization of accumulated actuarial gains or losses, pension	359	741
Amortization of accumulated actuarial gains or losses, transition obligations, and prior service costs, postretirement medical benefit	5	1,001
Tax effect of other comprehensive income gains	-138	0
Other comprehensive income	226	1,742
Comprehensive loss attributable to the Parent company	($18,804)	($2,345)

Consolidated_Statements_of_Sha

Consolidated Statements of Shareholders' Deficit (USD $)	Total	Preferred Stock	Common Stock	Other Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit
Beginning balance at Dec. 31, 2013	($187,879,000)	$160,000	$36,479,000	$134,861,000	($63,595,000)	($295,784,000)
Beginning balance, shares at Dec. 31, 2013	'	159,960	14,592,231	'	'	'
Preferred dividends declared	-261,000	'	'	'	'	-261,000
Common stock issued as compensation	728,000	'	0	728,000	'	'
Common stock issued as compensation, shares	'	'	0	'	'	'
SARs exercised	0	'	14,000	-14,000	'	'
SARs exercised, shares	'	'	5,723	'	'	'
Conversion of convertible notes and securities	0	-39,000	662,000	-623,000	'	'
Conversion of convertible notes and securities, shares	'	-38,737	264,641	'	'	'
Net loss	-19,030,000	'	'	'	'	-19,030,000
Other comprehensive income	226,000	'	'	'	226,000	'
Ending balance at Mar. 31, 2014	($206,216,000)	$121,000	$37,155,000	$134,952,000	($63,369,000)	($315,075,000)
Ending balance, shares at Mar. 31, 2014	'	121,223	14,862,595	'	'	'

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:	'	'
Net loss	($19,030)	($4,087)
Adjustments to reconcile net loss to net cash provided by operating activities:	'	'
Depreciation, depletion and amortization	16,059	14,426
Accretion of asset retirement obligation and receivable	3,479	3,180
Non-cash tax benefits	-138	0
Amortization of intangible assets and liabilities, net	153	164
Share-based compensation	728	2,386
Loss (gain) on sales of assets	38	-234
Amortization of deferred financing costs	271	933
Loss on sales of investment securities	0	7
Loss on foreign exchange	6,790	0
Changes in operating assets and liabilities:	'	'
Receivables, net	5,202	120
Inventories	4,525	-2,687
Excess of black lung benefit obligation over trust assets	701	83
Accounts payable and accrued expenses	10,959	3,245
Deferred revenue	-1,302	160
Income tax payable	28	27
Accrual for workers' compensation	-69	-191
Asset retirement obligation	-1,352	-3,207
Accrual for postretirement medical benefits	906	1,985
Pension and SERP obligations	-293	742
Other assets and liabilities	1,993	4,164
Net cash provided by operating activities	29,648	21,216
Cash flows from investing activities:	'	'
Additions to property, plant and equipment	-3,050	-5,301
Change in restricted investments and bond collateral and reclamation deposits	-465,544	-6,435
Net proceeds from sales of assets	0	441
Proceeds from sale of restricted investments	0	5,619
Receivable from customer for property and equipment purchases	-10	-49
Other	-60	0
Net cash used in investing activities	-468,664	-5,725
Cash flows from financing activities:	'	'
Change in book overdrafts	-315	820
Borrowings from long-term debt, net of debt discount	454,219	0
Repayments of long-term debt	-6,239	-6,573
Borrowings on revolving lines of credit	0	6,000
Repayments of revolving lines of credit	0	-6,000
Debt issuance costs and other refinancing costs	-7,598	-156
Preferred dividends paid	-261	-340
Net cash provided by (used in) financing activities	439,806	-6,249
Net increase in cash and cash equivalents	790	9,242
Cash and cash equivalents, beginning of period	61,110	31,610
Cash and cash equivalents, end of period	$61,900	$40,852

BASIS_OF_PRESENTATION

BASIS OF PRESENTATION	3 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
BASIS OF PRESENTATION	'
	BASIS OF PRESENTATION
	The accompanying unaudited consolidated financial statements include accounts of Westmoreland Coal Company, or the Company, or Parent, and its subsidiaries and controlled entities. The Company’s current principal activities, all conducted within the United States, are the production and sale of coal from its mines in Montana, Wyoming, North Dakota and Texas, and the ownership of the Roanoke Valley power plants, or ROVA, in North Carolina. The Company’s activities are primarily conducted through wholly owned subsidiaries. All intercompany transactions and accounts have been eliminated in consolidation.
	The Company’s Kemmerer Mine is owned by its subsidiary Westmoreland Kemmerer, Inc., or Kemmerer. The Company’s Absaloka Mine is owned by its subsidiary Westmoreland Resources, Inc., or WRI. The Beulah, Jewett, Rosebud, and Savage Mines are owned through the Company’s subsidiary Westmoreland Mining LLC, or WML.
	The consolidated financial statements of the Company have been prepared in accordance with United States generally accepted accounting principles and require use of management’s estimates. The financial information contained in this Form 10-Q is unaudited, but reflects all adjustments, which are, in the opinion of management, necessary for a fair presentation of the financial information for the periods shown. Such adjustments are of a normal recurring nature. The results of operations for the three months ended March 31, 2014 are not necessarily indicative of results to be expected for the year ending December 31, 2014.
	These quarterly consolidated financial statements should be read in conjunction with the consolidated financial statements and notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2013, or the 2013 Form 10-K. The accounting principles followed by the Company are set forth in the Notes to the Company’s consolidated financial statements in its 2013 Form 10-K. Most of the descriptions of the accounting principles and other footnote disclosures previously made have been omitted in this report so long as the interim information presented is not misleading or inconsistent.
	Sherritt Acquisition
	On December 24, 2013, the Company entered into an agreement to acquire the coal operations of Sherritt International Corporation, or Sherritt, which consist of its Prairie and Mountain coal mining operations, collectively referred to as the Sherritt Acquisition. These operations include seven producing thermal coal mines in the Canadian provinces of Alberta and Saskatchewan, a 50% interest in an activated carbon plant and a Char production facility. The preliminary purchase price of $435 million will be made up of $293 million of cash consideration and the assumption of an estimated $142 million of capital lease liabilities, subject to certain adjustments provided for in the agreement, relating to, among other things, working capital, indebtedness, pension plan funding and coal inventory. Acquisition and financing costs of $18.1 million have been expensed for the three months ended March 31, 2014; which includes $6.8 million of loss on foreign exchange as described in Note 8, $6.1 million of interest expense on the New Notes as described in Note 4, $4.9 million included in Interest expense related to a bridge facility commitment fee, and $0.3 million of other expenses included in Selling and administrative costs. The Company expects this acquisition to be completed during the second quarter of 2014.
	Debt Obligations
	The Company is subject to three major debt arrangements: (1) $81.0 million in aggregate principal amount of senior secured notes at WML that are collateralized by all assets of WML, Westmoreland Savage Corporation, or WSC, Western Energy Company, or WECO, and Dakota Westmoreland Corporation, or DWC; and (2) $251.5 million in aggregate principal amount of senior secured notes at the Parent level that are collateralized by the assets of the Parent, WRI, Kemmerer and ROVA; and (3) $425.0 million in aggregate principal amount of 10.75% senior secured notes, referred to as the New Notes, which are also collateralized by the assets of the Parent, WRI, Kemmerer and ROVA. The proceeds from the New Notes will be used primarily to pay the purchase price and related expenses for the Sherritt Acquisition, to prepay the outstanding senior secured notes issued of WML debt, and for working capital. The proceeds are being held in escrow pending the completion of the Sherritt Acquisition. See Note 4 for additional details.
	Business Interruption Insurance
	The Company received business interruption insurance proceeds for the three months ended March 31, 2014 due to an explosion and subsequent fire at a customer’s facility that occurred in November 2011. Operations at that facility resumed during October 2013. The Company recognizes income as business interruption losses are incurred and reimbursement is virtually assured. The Company reports this income in Other operating income and recognized nil and $4.8 million of income for the three months ended March 31, 2014 and 2013, respectively. The Company received $4.6 million of cash proceeds for the three months ended March 31, 2014 related to income recorded in 2013. Insurance proceeds are included in Net cash provided by operating activities. As of March 31, 2014, the Company has collected all cash proceeds related to income recognized.
	Derivatives
	The Company utilized foreign exchange derivatives to manage exposure to fluctuations in the exchange rates of the Canadian dollar regarding the Sherritt acquisition. The Company does not utilize derivative financial instruments for trading purposes or for speculative purposes. The Company's derivative instruments are recorded on the Consolidated Balance Sheets in Other current assets and Other current liabilities at fair value with changes in fair value recognized in the statement of operations at the end of each period in Loss on foreign exchange.
	Income Taxes
	The difference between the statutory income tax rate and the effective income tax rate is due to a change in the valuation allowance recorded against the net deferred tax assets.
	Restructuring Charges
	In 2013, the Company entered into an agreement with Dominion Virginia Power, a subsidiary of Dominion, to restructure the remaining five years of the ROVA I and ROVA II contracts. During the first quarter of 2014, the Company recorded a restructuring charge of $0.4 million for additional contractual obligations. The Company expects that the $5.1 million of accruals will be paid out in the second quarter of 2014.
	The table below represents the restructuring provision activity during the three months ended March 31, 2014 (in millions):
	Beginning Balance		Restructuring Charges		Restructuring Payments		Ending Balance
	$	5.1	$	0.4	$	0.4	$	5.1
	Recently Adopted Accounting Pronouncements
	The Company did not adopt any new accounting pronouncements during the three months ended March 31, 2014.

INVENTORIES

INVENTORIES	3 Months Ended
	Mar. 31, 2014
Inventory Disclosure [Abstract]	'
INVENTORIES	'
	INVENTORIES
	Inventories consisted of the following:
		March 31, 2014			December 31, 2013
		(In thousands)
	Coal stockpiles	$	1,189		$	543
	Coal fuel inventories	1,844			6,161
	Materials and supplies	33,189			34,233
	Reserve for obsolete inventory	(775		)	(965		)
	Total	$	35,447		$	39,972

RESTRICTED_INVESTMENTS_AND_BON

RESTRICTED INVESTMENTS AND BOND COLLATERAL	3 Months Ended
	Mar. 31, 2014
Disclosure Restricted Investments and Bond Collateral [Abstract]	'
RESTRICTED INVESTMENTS AND BOND COLLATERAL	'
	RESTRICTED INVESTMENTS AND BOND COLLATERAL
	The Company’s restricted investments and bond collateral consist of the following:
		March 31, 2014			31-Dec-13
		(In thousands)
	Coal Segment:
	WML debt reserve account	$	13,068		$	13,067
	Reclamation bond collateral:
	Kemmerer Mine	24,944			24,966
	Absaloka Mine	11,670			11,653
	Rosebud Mine	3,145			3,145
	Beulah Mine	1,270			1,270
	Power Segment:
	Letter of credit account	—			5,998
	Corporate Segment:
	Proceeds from the New Notes held in escrow	454,219			—
	Other requirements for Sherritt Acquisition held in escrow	16,900			—
	Postretirement medical benefit bonds	8,481			8,467
	Workers’ compensation bonds	6,686			6,667
	Total restricted investments and bond collateral	540,383			75,233
	Less current portion	(16,900		)	(5,998		)
	Total restricted investments and bond collateral, less current portion	$	523,483		$	69,235
	For all of its restricted investments and bond collateral accounts, the Company can select from limited fixed-income investment options for the funds and receive the investment returns on these investments. Funds in the restricted investments and bond collateral accounts are not available to meet the Company’s general cash needs. Net proceeds from the New Notes (see Note 4) are held in escrow pending the completion of the Sherritt Acquisition and are held entirely in cash. Other requirements for the Sherritt Acquisition include cash required to be deposited in a restricted account for interest accrued as of March 31, 2014 for the New Notes and other fees expected to be paid in connection with the Sherritt Acquisition.
	These accounts include held-to-maturity securities. Held-to-maturity securities are recorded at amortized cost, adjusted for the amortization or accretion of premiums or discounts calculated on the effective interest method. Interest income is recognized when earned.
	The Company’s carrying value and estimated fair value of its restricted investments and bond collateral at March 31, 2014 are as follows:
		Carrying Value			Fair Value
		(In thousands)
	Cash and cash equivalents	$	503,391		$	503,391
	Time deposits	2,444			2,444
	Held-to-maturity securities	34,548			34,707
		$	540,383		$	540,542
	Held-to-Maturity Restricted Investments and Bond Collateral
	The amortized cost, gross unrealized holding gains and fair value of held-to-maturity securities at March 31, 2014 is as follows (in thousands):
	Amortized cost	$	34,548
	Gross unrealized holding gains	440
	Gross unrealized holding losses	(281		)
	Fair value	$	34,707
	Maturities of held-to-maturity securities are as follows at March 31, 2014:
		Amortized Cost			Fair Value
		(In thousands)
	Due within one year	$	1,193		$	1,217
	Due in five years or less	19,539			19,752
	Due after five years to ten years	6,718			6,717
	Due in more than ten years	7,098			7,021
		$	34,548		$	34,707
	The Company does not intend to sell its held-to-maturity securities and it is not more likely than not that the Company will be required to sell the securities before recovery of amortized cost bases, which may be at maturity.
	As of February 2014, the Company is no longer required to fund a letter of credit account for its power operations.

LINES_OF_CREDIT_AND_LONGTERM_D

LINES OF CREDIT AND LONG-TERM DEBT	3 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
LINES OF CREDIT AND LONG-TERM DEBT	'
	LINES OF CREDIT AND LONG-TERM DEBT
	The amounts outstanding under the Company’s long-term debt consisted of the following as of the dates indicated:
		Total Debt Outstanding
		March 31, 2014			December 31, 2013
		(In thousands)
	10.75% Senior Notes due 2018	$	251,500		$	251,500
	New Notes - 10.75% senior notes due 2018	425,000			—
	8.02% WML term debt due 2018	81,000			85,500
	Capital lease obligations	21,465			10,153
	Other	1,093			1,209
	Debt premium (discount), net	20,173			(8,525		)
	Total debt outstanding	800,231			339,837
	Less current installments	(48,586		)	(44,343		)
	Total debt outstanding, less current installments	$	751,645		$	295,494
	The following table presents aggregate contractual debt maturities of all long-term debt:
		As of March 31, 2014
		(In thousands)
	2014	$	19,569
	2015	24,710
	2016	24,055
	2017	24,664
	2018	684,556
	Thereafter	2,504
	Total	780,058
	Plus: debt premium (discount), net	20,173
	Total debt	$	800,231
	On February 7, 2014, the Company closed on a private offering of $425.0 million in aggregate principal amount of 10.75% senior notes due 2018 at a price of 106.875% plus accrued interest from February 1, 2014, referred to as the New Notes. Total proceeds of the offering was $454.2 million, which included $29.2 million of debt premium. The net proceeds of the offering of the New Notes will be used to finance the approximately $293 million cash portion of the purchase price of the Sherritt Acquisition, an estimated $58 million to satisfy the cash bonding obligations for the Sherritt mines and cash transaction costs associated with the acquisition and offering of the New Notes of approximately $26 million. The remaining balance of the proceeds will be used to fund the prepayment of the WML Notes and for other general corporate purposes. The proceeds of the offering are being held in escrow pending the completion of the acquisition. The Company will pay interest on the New Notes semi-annually on February 1st and August 1st of each year beginning on August 1, 2014. The Company capitalized debt issuance costs of $7.6 million during the three months ended March 31, 2014.
	Promptly following the completion of the Sherritt Acquisition, the Company will exchange the New Notes for $425 million aggregate principal amount of add-on 10.75% senior secured notes due 2018 (the “Add-On Notes”) and the Company will become party to a registration rights agreement, pursuant to which the Company will agree to register with the Securities and Exchange Commission the exchange of Add-On Notes for registered notes with the same terms as the existing 10.75% Senior Notes due 2018.
	If the Sherritt Acquisition is not completed on or prior to June 30, 2014, then the New Notes will be subject to a mandatory redemption at a redemption price equal to 101% of the offering price of the New Notes, plus accrued and unpaid interest through the mandatory redemption date.
	During the three months ended March 31, 2014, we entered into $12.9 million of new capital leases at our Kemmerer Mine.
	Additional information regarding the Company's debt is outlined in Note 5 to the Consolidated Financial Statements in the Company's 2013 Annual Report on Form 10-K.

POSTRETIREMENT_MEDICAL_BENEFIT

POSTRETIREMENT MEDICAL BENEFITS AND PENSION	3 Months Ended
	Mar. 31, 2014
Compensation and Retirement Disclosure [Abstract]	'
POSTRETIREMENT MEDICAL BENEFITS AND PENSION	'
	POSTRETIREMENT MEDICAL BENEFITS AND PENSION
	Postretirement Medical Benefits
	The Company provides postretirement medical benefits to retired employees and their dependents as mandated by the Coal Industry Retiree Health Benefit Act of 1992 and pursuant to collective bargaining agreements. The Company also provides these benefits to qualified full-time employees pursuant to collective bargaining agreements.
	The components of net periodic postretirement medical benefit cost are as follows:
		Three Months Ended March 31,
		2014			2013
		(In thousands)
	Components of net periodic benefit cost:
	Service cost	$	822		$	1,109
	Interest cost	3,203			3,035
	Amortization of deferred items	5			1,001
	Total net periodic benefit cost	$	4,030		$	5,145
	The following table shows the net periodic postretirement medical benefit costs that relate to current and former mining operations:
		Three Months Ended March 31,
		2014			2013
		(In thousands)
	Former mining operations	$	2,403		$	3,119
	Current operations	1,627			2,026
	Total net periodic benefit cost	$	4,030		$	5,145
	The costs for the former mining operations are included in Heritage health benefit expenses and costs for current operations are included in Cost of sales and Selling and administrative expenses.
	Pension
	The Company provides pension benefits to qualified full-time employees pursuant to collective bargaining agreements.
	The Company incurred net periodic benefit costs of providing these pension benefits as follows:
		Three Months Ended March 31,
		2014			2013
		(In thousands)
	Components of net periodic benefit cost:
	Service cost	$	500		$	534
	Interest cost	1,747			1,625
	Expected return on plan assets	(2,154		)	(2,060		)
	Amortization of deferred items	359			741
	Total net periodic pension cost	$	452		$	840
	These costs are included in Cost of sales and Selling and administrative expenses.
	The Company contributed $0.6 million of cash contributions to its pension plans in the three months ended March 31, 2014 and expects to make $3.7 million of pension plan contributions during the remainder of 2014.

HERITAGE_HEALTH_BENEFIT_EXPENS

HERITAGE HEALTH BENEFIT EXPENSES	3 Months Ended
	Mar. 31, 2014
Heritage Health Benefit Expenses [Abstract]	'
HERITAGE HEALTH BENEFIT EXPENSES	'
	HERITAGE HEALTH BENEFIT EXPENSES
	The caption Heritage health benefit expenses used in the consolidated statements of operations refers to costs of benefits the Company provides to its former mining operation employees. The components of these expenses are as follows:
		Three Months Ended March 31,
		2014		2013
		(In thousands)
	Health care benefits	$	2,276	$	3,176
	Combined benefit fund payments	512		576
	Workers’ compensation benefits	136		116
	Black lung benefits	620		83
	Total	$	3,544	$	3,951

ASSET_RETIREMENT_OBLIGATIONS_C

ASSET RETIREMENT OBLIGATIONS, CONTRACTUAL THIRD-PARTY RECLAMATION RECEIVABLES, AND RECLAMATION DEPOSITS	3 Months Ended
	Mar. 31, 2014
Asset Retirement Obligation Disclosure [Abstract]	'
ASSET RETIREMENT OBLIGATIONS, CONTRACTUAL THIRD-PARTY RECLAMATION RECEIVABLES, AND RECLAMATION DEPOSITS	'
	ASSET RETIREMENT OBLIGATIONS, CONTRACTUAL THIRD-PARTY RECLAMATION RECEIVABLE, AND RECLAMATION DEPOSITS
	The asset retirement obligation, contractual third-party reclamation receivable, and reclamation deposits for each of the Company’s mines and ROVA at March 31, 2014 are summarized below:
		Asset			Contractual			Reclamation
		Retirement			Third-Party			Deposits
		Obligation			Reclamation
					Receivable
		(In thousands)
	Rosebud	$	127,989		$	21,656		$	75,315
	Jewett	74,247			74,247			—
	Absaloka	37,286			346			—
	Beulah	17,764			—			—
	Kemmerer	17,569			—			—
	Savage	5,499			—			—
	ROVA	909			—			—
	Total	$	281,263		$	96,249		$	75,315
	Asset Retirement Obligations
	Changes in the Company’s asset retirement obligations were as follows:
		Three Months Ended March 31,
		2014			2013
		(In thousands)
	Asset retirement obligations, beginning of year (including current portion)	$	279,864		$	263,847
	Accretion	5,836			5,481
	Liabilities settled	(4,437		)	(5,839		)
	Asset retirement obligations, end of period	281,263			263,489
	Less current portion	(22,227		)	(23,154		)
	Asset retirement obligations, less current portion	$	259,036		$	240,335
	Contractual Third-Party Reclamation Receivables
	At March 31, 2014, the Company has recognized as an asset of $96.2 million as contractual third-party reclamation receivables, representing the present value of customer obligations to reimburse the Company for future reclamation expenditures at the Company’s Rosebud, Jewett and Absaloka Mines.
	Reclamation Deposits
	The Company’s reclamation deposits will be used to fund final reclamation activities. The Company’s carrying value and estimated fair value of its reclamation deposits at March 31, 2014 are as follows:
		Carrying Value			Fair Value			Fair Value Hierarchy
		(In thousands)
	Cash and cash equivalents	$	49,627		$	49,627		Level 1
	Held-to-maturity securities	25,688			26,401			Level 2
		$	75,315		$	76,028
	Held-to-Maturity Reclamation Deposits
	The amortized cost, gross unrealized holding gains and losses and fair value of held-to-maturity securities at March 31, 2014 are as follows (in thousands):
	Amortized cost	$	25,688
	Gross unrealized holding gains	826
	Gross unrealized holding losses	(113		)
	Fair value	$	26,401
	Maturities of held-to-maturity securities are as follows at March 31, 2014:
		Amortized Cost			Fair Value
		(In thousands)
	Within one year	$	479		$	468
	Due in five years or less	17,562			17,880
	Due after five years to ten years	4,869			5,023
	Due in more than ten years	2,778			3,030
		$	25,688		$	26,401
	The Company does not intend to sell its held-to-maturity securities and it is not more likely than not that the Company will be required to sell the securities before recovery of amortized cost bases, which may be at maturity.

DERIVATIVE_INSTRUMENTS

DERIVATIVE INSTRUMENTS	3 Months Ended
	Mar. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
DERIVATIVE INSTRUMENTS	'
	DERIVATIVE INSTRUMENTS
	Derivative Assets and Liabilities
	The Company evaluates all of its financial instruments to determine if such instruments are derivatives, derivatives that qualify for the normal purchase normal sale exception, or contain features that qualify as embedded derivatives. All derivative financial instruments, except for derivatives that qualify for the normal purchase normal sale exception, are recognized on the balance sheet at fair value. Changes in fair value are recognized in earnings if they are not eligible for hedge accounting or in other comprehensive income if they qualify for cash flow hedge accounting.
	In the first quarter of 2014, the Company entered into two foreign currency exchange forward contracts to purchase Canadian Dollars in order to hedge a portion of its exposure to fluctuating rates of exchange on anticipated Canadian Dollar-denominated Sherritt Acquisition cash flows. As of March 31, 2014, the Company had two individual foreign currency exchange forward contracts with external counterparties for a total notional amount of $348.3 million, which both have settlement dates of April 30, 2014.
	The fair value of outstanding derivative instruments not designated as hedging instruments on the accompanying Consolidated Balance Sheets was as follows (in thousands):
	Derivative Instruments	Balance Sheet Location	March 31, 2014
	Canadian dollar foreign exchange forward contracts	Other current assets	$	246
	Canadian dollar foreign exchange forward contracts	Other current liabilities	(7,036		)
	The effect of derivative instruments not designated as hedging instruments on the accompanying Consolidated Statements of Operations was as follows (in thousands):
	Derivative Instruments	Statement of	Three Months Ended March 31, 2014
		Operations Location
	Canadian dollar foreign exchange forward contracts	Loss on foreign exchange	$	(6,790	)

FAIR_VALUE_MEASUREMENTS

FAIR VALUE MEASUREMENTS	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
FAIR VALUE MEASUREMENTS	'
		FAIR VALUE MEASUREMENTS
	Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. See Notes 3, 7 and 8 for additional disclosures related to fair value measurements.
	Fair value hierarchy prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy, as defined below, gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs.
	•	Level 1, defined as observable inputs such as quoted prices in active markets for identical assets.
	•	Level 2, defined as observable inputs other than Level 1 prices. These include quoted prices for similar assets or liabilities in an active market, quoted prices for identical assets and liabilities in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
	•	Level 3, defined as unobservable inputs in which little or no market data exists, therefore requiring an entity to develop its own assumptions.
	Long-term debt fair value estimates are based on observed prices for securities with an active trading market when available (Level 2) and otherwise using discount rate estimates based on interest rates as of March 31, 2014 (Level 3). The estimated fair values of the Company’s debt with fixed interest rates are as follows:
		Carrying Value		Fair Value
		(In thousands)
	31-Dec-13	$	328,473	$	364,329
	March 31, 2014	$	777,670	$	823,603
	The Company uses derivative financial instruments, primarily foreign exchange contracts, to reduce its exposure to market risks from changes in foreign exchange rates. These foreign exchange contracts are measured at fair value using quoted forward foreign exchange prices from counterparties corroborated by market-based pricing (Level 2). Additional information related to the Company’s derivative financial instruments is disclosed in Note 1 and Note 8 to the consolidated financial statements.
	The Company’s non-recurring fair value measurements include asset retirement obligations (refer to Note 7).
	The Company determines the estimated fair value of its asset retirement obligations by calculating the present value of estimated cash flows related to reclamation liabilities using Level 3 inputs. The significant inputs used to calculate such liabilities includes estimates of costs to be incurred, the Company’s credit adjusted discount rate, inflation rates and estimated dates of reclamation. The asset retirement liability is accreted to its present value each period and the capitalized asset retirement cost is depleted using the units-of-production method.
	The fair value of assets and liabilities acquired through business combinations is calculated using a discounted-cash flow approach using Level 3 inputs. Cash flow estimates require forecasts and assumptions for many years into the future for a variety of factors.

SHAREHOLDERS_EQUITY_AND_ACCUMU

SHAREHOLDERS' EQUITY AND ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	3 Months Ended
	Mar. 31, 2014
Stockholders' Equity Note [Abstract]	'
STOCKHOLDERS' EQUITY AND ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)	'
	SHAREHOLDERS’ EQUITY AND ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
	Preferred Stock
	The Company has outstanding Series A Convertible Exchangeable Preferred Stock on which cumulative dividends of $2.125 per share are payable quarterly. The Company paid $0.3 million of preferred stock dividends for the three months ended March 31, 2014. During the three months ended March 31, 2014, approximately 38,737 shares of preferred stock were converted into 264,641 shares of common stock. Subsequent to March 31, 2014 and through April 23, 2014, approximately 7,830 shares of preferred stock were converted into 53,486 shares of common stock.
	Changes in Accumulated Other Comprehensive Income
	The following table reflects the changes in accumulated other comprehensive loss by component:
		Pension				Postretirement			Tax effect of			Accumulated
						medical benefits			other			other
									comprehensive			comprehensive
									income gains			loss
		(In thousands)
	Balance at December 31, 2013	$	(12,255	)		$	(20,292	)	$	(31,048	)	$	(63,595	)
	Other comprehensive income (loss) before reclassifications	—				—			(138		)	(138		)
	Amounts reclassified from accumulated other comprehensive income (loss)	359				5			—			364
	Balance at March 31, 2014	$	(11,896	)		$	(20,287	)	$	(31,186	)	$	(63,369	)
	The following table reflects the reclassifications out of accumulated other comprehensive loss for the three months ended March 31, 2014 are as follows (in thousands):
	Details about accumulated other comprehensive loss components		Amount reclassified from accumulated				Affected line item
			other comprehensive loss1				in the statement
							where net income
			Three Months Ended March 31, 2014				(loss) is presented
	Amortization of defined benefit pension items
	Actuarial losses		$	359			2
	Amortization of postretirement medical items
	Prior service costs		$	(159	)		3
	Actuarial losses		164				3
			$	5			Total
	____________________
	-1	Amounts in parentheses indicate debits to income/loss.
	-2	These accumulated other comprehensive loss components are included in the computation of net periodic pension cost. (See Note 5 - Pension for additional details)
	-3	These accumulated other comprehensive loss components are included in the computation of net periodic postretirement medical cost. (See Note 5 - Postretirement Medical Benefits for additional details)

SHAREBASED_COMPENSATION

SHARE-BASED COMPENSATION	3 Months Ended
	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
SHARE-BASED COMPENSATION	'
	SHARE-BASED COMPENSATION
	The Company grants employees and non-employee directors restricted stock units from the Amended and Restated 2007 Equity Incentive Stock Plan.
	The Company recognized compensation expense from share-based arrangements shown in the following table:
		Three Months Ended March 31,
		2014			2013
		(In thousands)
	Recognition of fair value of restricted stock units, stock options and SARs over vesting period; and issuance of stock	$	728		$	1,663
	Contributions of stock to the Company's 401(k) plan	—			723
	Total share-based compensation expense	$	728		$	2,386
	Restricted Stock Units
	A summary of restricted stock award activity for the three months ended March 31, 2014 is as follows:
		Units		Weighted			Unamortized
				Average			Compensation
				Grant-Date			Expense
				Fair Value			(In thousands)
	Non-vested at December 31, 2013	588,727		$	9.37
	Granted	—		—
	Vested	—		—
	Non-vested at March 31, 2014	588,727		$	9.37		$	1,618		(1)
	____________________
	-1	Expected to be recognized over the next three years.
	Stock Options
	A summary of stock option activity for the three months ended March 31, 2014 is as follows:
		Stock Options		Weighted			Weighted			Aggregate Intrinsic			Unamortized
				Average			Average			Value			Compensation
				Exercise Price			Remaining			(In thousands)			Expense
							Contractual						(In thousands)
							Life
							(In years)
	Outstanding at December 31, 2013	145,806		$	21.97
	Exercised	—		$	—
	Expired	—		$	—
	Outstanding and exercisable at March 31, 2014	145,806		$	21.97		4			$	1,139		$	—
	There were no stock options granted during the three months ended March 31, 2014.
	SARs
	A summary of SARs activity for the three months ended March 31, 2014 is as follows:
		SARs		Weighted			Weighted		Aggregate Intrinsic			Unamortized
				Average Exercise Price			Average		Value			Compensation
							Remaining		(In thousands)			Expense
							Contractual					(In thousands)
							Life
							(In years)
	Outstanding at December 31, 2013	70,734		$	22.6
	Exercised	(25,667	)	$	—
	Expired	—		$	—
	Outstanding and exercisable at March 31, 2014	45,067		$	23.95		1.9		$	352		$	—
	There were no SARs granted during the three months ended March 31, 2014.

EARNINGS_PER_SHARE

EARNINGS PER SHARE	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
EARNINGS PER SHARE	'
	EARNINGS PER SHARE
	Basic earnings (loss) per share has been computed by dividing the net income (loss) applicable to common shareholders by the weighted average number of shares of common stock outstanding during each period. Net income (loss) applicable to common shareholders includes the adjustment for net income or loss attributable to noncontrolling interest. Diluted earnings (loss) per share is computed by including the dilutive effect of common stock that would be issued assuming conversion or exercise of outstanding convertible notes and securities, stock options, stock appreciation rights, and restricted stock units. No such items were included in the computations of diluted loss per share in the three months ended March 31, 2014 and March 31, 2013 because the Company incurred a net loss applicable to common shareholders in these periods and the effect of inclusion would have been anti-dilutive.
	The table below shows the number of shares that were excluded from the calculation of diluted loss per share because their inclusion would be anti-dilutive to the calculation:
		Three Months Ended March 31,
		2014	2013
		(In thousands)
	Convertible securities	828	1,093
	Restricted stock units, stock options and SARs	779	978
	Total shares excluded from diluted shares calculation	1,607	2,071

BUSINESS_SEGMENT_INFORMATION

BUSINESS SEGMENT INFORMATION	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
BUSINESS SEGMENT INFORMATION	'
	BUSINESS SEGMENT INFORMATION
	Segment information is based on a management approach, which requires segmentation based upon the Company’s internal organization, reporting of revenue, and operating income.
	The Company’s operations are classified into four reporting segments: coal, power, heritage and corporate.
	Summarized financial information by segment is as follows:
		Coal			Power			Heritage			Corporate			Consolidated
		(In thousands)
	Three Months Ended March 31, 2014
	Revenues	$	158,190		$	22,012		$	—		$	—		$	180,202
	Restructuring charges	—			397			—			—			397
	Depreciation, depletion, and amortization	13,459			2,524			—			76			16,059
	Operating income (loss)	13,447			1,744			(3,830		)	(3,308		)	8,053
	Total assets	697,916			167,998			15,622			525,611			1,407,147
	Capital expenditures	3,053			35			—			(38		)	3,050
	Three Months Ended March 31, 2013
	Revenues	$	142,112		$	19,336		$	—		$	—		$	161,448
	Depreciation, depletion, and amortization	11,801			2,531			—			94			14,426
	Operating income (loss)	13,472			(1,003		)	(4,175		)	(2,560		)	5,734
	Total assets	711,128			186,309			15,877			29,701			943,015
	Capital expenditures	5,010			134			—			157			5,301
	A reconciliation of segment income (loss) from operations to loss before income taxes follows:
		Three Months Ended March 31,
		2014			2013
		(In thousands)
	Income from operations	$	8,053		$	5,734
	Interest expense	(20,798		)	(10,160		)
	Interest income	302			297
	Loss on foreign exchange	(6,790		)	—
	Other income	93			70
	Loss before income taxes	$	(19,140	)	$	(4,059	)

CONTINGENCIES

CONTINGENCIES	3 Months Ended
	Mar. 31, 2014
Commitments and Contingencies Disclosure [Abstract]	'
CONTINGENCIES	'
	CONTINGENCIES
	The Company is a party to routine claims and lawsuits with respect to various matters. The Company provides for costs related to contingencies when a loss is probable and the amount is reasonably estimable. After conferring with counsel, it is the opinion of management that the ultimate resolution of pending claims will not have a material adverse effect on the consolidated financial condition, results of operations, or liquidity of the Company.

SUPPLEMENTAL_CONSOLIDATING_FIN

SUPPLEMENTAL CONSOLIDATING FINANCIAL INFORMATION	3 Months Ended
	Mar. 31, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
SUPPLEMENTAL CONSOLIDATING FINANCIAL INFORMATION	'
	SUPPLEMENTAL CONSOLIDATING FINANCIAL INFORMATION
	Pursuant to the indenture governing the 10.75% Senior Notes, certain 100% owned subsidiaries of the Company have fully and unconditionally guaranteed the notes on a joint and several basis.
	Guarantees of the Senior Notes will be released under certain circumstances, including:
	-1	in the event of a sale or other disposition of all or substantially all of the assets of such Guarantor Subsidiary, by way of merger, consolidation or otherwise, a sale or other disposition of all of the Equity Interests of such Guarantor Subsidiary then held by the Issuers or any Restricted Subsidiary; provided, that the sale or other disposition does not violate the “Asset Sales” provisions of the Indenture;
	-2	if such Guarantor Subsidiary is designated as an Unrestricted Subsidiary in accordance with the provisions of the Indenture, upon effectiveness of such designation;
	-3	upon Legal Defeasance or Covenant Defeasance (as such terms are defined in the indenture) or upon satisfaction and discharge of the Indenture;
	-4	upon the liquidation or dissolution of such Guarantor Subsidiary, provided no event of default has occurred and is continuing; or
	-5	at such time as such Guarantor Subsidiary is no longer required to be a Guarantor Subsidiary of the Senior Notes as described in the Indenture, provided no event of default has occurred and is continuing.
	The following tables present unaudited consolidating financial information for (i) the issuer of the notes (Westmoreland Coal Company), (ii) the co-issuer of the notes (Westmoreland Partners), (iii) the guarantors under the notes, and (iv) the entities that are not guarantors under the notes:
	CONSOLIDATING BALANCE SHEETS
	March 31, 2014
	(In thousands)
	Assets		Parent/				Co-Issuer				Guarantor				Non-				Consolidating				Total
			Issuer								Subsidiaries				Guarantor				Adjustments
															Subsidiaries
	Current assets:
	Cash and cash equivalents		$	28,759			$	4,043			$	8,794			$	20,304			$	—			$	61,900
	Receivables:
	Trade		—				12,456				22,857				29,402				—				64,715
	Contractual third-party reclamation receivables		—				—				44				8,169				—				8,213
	Intercompany receivable/payable		(2,263		)		—				3,499				(33,946		)		32,710				—
	Other		273				208				244				681				(31		)		1,375
			(1,990		)		12,664				26,644				4,306				32,679				74,303
	Inventories		—				1,845				15,133				18,469				—				35,447
	Restricted investments and bond collateral		16,900				—				—				—				—				16,900
	Other current assets		7,044				425				3,168				6,005				1				16,643
	Total current assets		50,713				18,977				53,739				49,084				32,680				205,193
	Property, plant and equipment:
	Land and mineral rights		—				1,395				104,640				172,163				—				278,198
	Plant and equipment		3,966				220,932				245,368				202,923				—				673,189
			3,966				222,327				350,008				375,086				—				951,387
	Less accumulated depreciation, depletion and amortization		2,781				74,177				138,718				246,079				(1		)		461,754
	Net property, plant and equipment		1,185				148,150				211,290				129,007				1				489,633
	Advanced coal royalties		—				—				3,000				4,263				—				7,263
	Reclamation deposits		—				—				—				75,315				—				75,315
	Restricted investments and bond collateral		469,385				—				36,615				17,483				—				523,483
	Contractual third-party reclamation receivables		—				—				302				87,734				—				88,036
	Intangible assets		—				871				—				228				—				1,099
	Investment in subsidiaries		237,926				—				—				3,770				(241,696		)		—
	Other assets		15,563				—				569				4,493				(3,500		)		17,125
	Total assets		$	774,772			$	167,998			$	305,515			$	371,377			$	(212,515	)		$	1,407,147
	CONSOLIDATING BALANCE SHEETS
	March 31, 2014
	(In thousands)
	Liabilities and Shareholders’ Deficit		Parent/				Co-Issuer				Guarantor				Non-				Consolidating				Total
			Issuer								Subsidiaries				Guarantor				Adjustments
															Subsidiaries
	Current liabilities
	Current installments of long-term debt		$	22,785			$	—			$	4,596			$	21,205			$	—			$	48,586
	Accounts payable and accrued expenses:
	Trade		9,000				6,331				14,710				32,557				—				62,598
	Production taxes		—				405				22,442				23,947				—				46,794
	Workers’ compensation		712				—				—				—				—				712
	Postretirement medical benefits		12,042				—				329				1,583				1				13,955
	SERP		390				—				—				—				—				390
	Deferred revenue		—				9,581				4,813				1,640				—				16,034
	Asset retirement obligations		—				—				3,554				18,673				—				22,227
	Other current liabilities		19,196				5,053				—				172				(31		)		24,390
	Total current liabilities		64,125				21,370				50,444				99,777				(30		)		235,686
	Long-term debt, less current installments		677,385				—				12,912				64,848				(3,500		)		751,645
	Workers’ compensation, less current portion		6,680				—				—				—				—				6,680
	Excess of black lung benefit obligation over trust assets		9,376				—				—				—				—				9,376
	Postretirement medical benefits, less current portion		185,447				—				50,472				35,356				—				271,275
Pension and SERP obligations, less current portion		12,921				98				9,494				1,011				—				23,524
Deferred revenue, less current portion		—				38,325				—				4,974				—				43,299
Asset retirement obligations, less current portion		—				909				51,300				206,827				—				259,036
Intangible liabilities		—				5,339				—				—				—				5,339
Other liabilities		6,440				—				—				1,063				—				7,503
Intercompany receivable/payable		18,613				—				(4,326		)		5,633				(19,920		)		—
Total liabilities		980,987				66,041				170,296				419,489				(23,450		)		1,613,363
Shareholders’ deficit
Preferred stock		121				—				—				—				—				121
Common stock		37,155				5				110				132				(247		)		37,155
Other paid-in capital		134,953				52,842				92,896				66,027				(211,766		)		134,952
Accumulated other comprehensive loss		(63,369		)		(162		)		17,372				(13,937		)		(3,273		)		(63,369		)
Accumulated earnings (deficit)		(315,075		)		49,272				24,841				(100,334		)		26,221				(315,075		)
Total equity (deficit)		(206,215		)		101,957				135,219				(48,112		)		(189,065		)		(206,216		)
Total liabilities and shareholders’ deficit		$	774,772			$	167,998			$	305,515			$	371,377			$	(212,515	)		$	1,407,147
CONSOLIDATING BALANCE SHEETS
December 31, 2013
(In thousands)
Assets		Parent/				Co-Issuer				Guarantor				Non-				Consolidating				Total
		Issuer								Subsidiaries				Guarantor				Adjustments
														Subsidiaries
Current assets:
Cash and cash equivalents		$	25,326			$	3,341			$	7,942			$	24,501			$	—			$	61,110
Receivables:
Trade		—				12,934				17,389				35,873				—				66,196
Contractual third-party reclamation receivables		—				—				44				8,443				—				8,487
Intercompany receivable/payable		(3,568		)		—				4,384				(33,681		)		32,865				—
Other		95				210				2,974				1,831				(24		)		5,086
		(3,473		)		13,144				24,791				12,466				32,841				79,769
Inventories		—				6,161				16,077				17,735				(1		)		39,972
Deferred income taxes		—				—				870				—				(870		)		—
Restricted investments and bond collateral		—				5,998				—				—				—				5,998
Other current assets		6,115				143				6,883				5,049				—				18,190
Total current assets		27,968				28,787				56,563				59,751				31,970				205,039
Property, plant and equipment:
Land and mineral rights		—				1,395				104,631				172,163				(1		)		278,188
Plant and equipment		3,939				220,872				229,998				202,886				1				657,696
		3,939				222,267				334,629				375,049				—				935,884
Less accumulated depreciation, depletion and amortization		2,705				71,653				132,189				239,302				(1		)		445,848
Net property, plant and equipment		1,234				150,614				202,440				135,747				1				490,036
Advanced coal royalties		—				—				3,000				4,311				—				7,311
Reclamation deposits		—				—				—				74,921				—				74,921
Restricted investments and bond collateral		15,134				—				36,619				17,482				—				69,235
Contractual third-party reclamation receivables		—				—				293				88,010				—				88,303
Intangible assets		—				1,283				—				238				(1		)		1,520
Investment in subsidiaries		266,847				—				—				3,770				(270,617		)		—
Other assets		8,636				—				586				3,098				(2,000		)		10,320
Total assets		$	319,819			$	180,684			$	299,501			$	387,328			$	(240,647	)		$	946,685
CONSOLIDATING BALANCE SHEETS
December 31, 2013
(In thousands)
Liabilities and Shareholders’ Deficit		Parent/				Co-Issuer				Guarantor				Non-Guarantor				Consolidating				Total
		Issuer								Subsidiaries				Subsidiaries				Adjustments
Current liabilities
Current installments of long-term debt		$	20,392			$	—			$	2,790			$	21,161			$	—			$	44,343
Accounts payable and accrued expenses:
Trade		4,122				10,119				12,522				30,743				1				57,507
Production taxes		—				3				17,429				24,472				1				41,905
Workers’ compensation		717				—				—				—				—				717
Postretirement medical benefits		12,042				—				329				1,583				1				13,955
SERP		390				—				—				—				—				390
Deferred revenue		—				9,024				3,969				1,075				—				14,068
Asset retirement obligations		—				—				3,104				20,250				(1		)		23,353
Other current liabilities		11,302				5,053				317				142				(24		)		16,790
Total current liabilities		48,965				24,199				40,460				99,426				(22		)		213,028
Long-term debt, less current installments		224,582				—				2,664				70,248				(2,000		)		295,494
Workers’ compensation, less current portion		6,744				—				—				—				—				6,744
Excess of black lung benefit obligation over trust assets		8,675				—				—				—				—				8,675
Postretirement medical benefits, less current portion		185,858				—				49,418				35,098				—				270,374
Pension and SERP obligations, less current portion		13,069				99				9,381				1,627				—				24,176
Deferred revenue, less current portion		—				41,297				—				5,271				(1		)		46,567
Asset retirement obligations, less current portion		—				892				50,472				205,147				—				256,511
Intangible liabilities		—				5,606				—				—				—				5,606
Other liabilities		5,939				—				6,220				1,450				(6,220		)		7,389
Intercompany receivable/payable		13,866				—				525				6,434				(20,825		)		—
Total liabilities		507,698				72,093				159,140				424,701				(29,068		)		1,134,564
Shareholders’ deficit
Preferred stock		160				—				—				—				—				160
Common stock		36,479				5				110				132				(247		)		36,479
Other paid-in capital		134,861				52,835				94,370				64,401				(211,606		)		134,861
Accumulated other comprehensive loss		(63,595		)		(164		)		17,492				(14,153		)		(3,175		)		(63,595		)
Accumulated earnings (deficit)		(295,784		)		55,915				28,389				(87,753		)		3,449				(295,784		)
Total equity (deficit)		(187,879		)		108,591				140,361				(37,373		)		(211,579		)		(187,879		)
Total liabilities and shareholders’ deficit		$	319,819			$	180,684			$	299,501			$	387,328			$	(240,647	)		$	946,685
CONSOLIDATING STATEMENTS OF OPERATIONS
Three Months Ended March 31, 2014
(In thousands)
	Parent/				Co-Issuer				Guarantor				Non-Guarantor				Consolidating				Total
	Issuer								Subsidiaries				Subsidiaries				Adjustments
Revenues	$	—			$	22,012			$	64,292			$	93,898			$	—			$	180,202
Costs and expenses:
Cost of sales	—				16,454				50,558				71,618				—				138,630
Depreciation, depletion and amortization	76				2,524				6,269				7,190				—				16,059
Selling and administrative	3,746				894				2,994				5,697				—				13,331
Heritage health benefit expenses	3,326				—				—				218				—				3,544
Loss (gain) on sales of assets	—				—				(1		)		39				—				38
Restructuring charges	—				397				—				—				—				397
Other operating income	—				—				150				—				—				150
	7,148				20,269				59,970				84,762				—				172,149
Operating income (loss)	(7,148		)		1,743				4,322				9,136				—				8,053
Other income (expense):
Interest expense	(18,673		)		(44		)		(110		)		(1,978		)		7				(20,798		)
Interest income	123				4				25				157				(7		)		302
Loss on foreign exchange	(6,790		)		—				—				—				—				(6,790		)
Other income	1				—				55				37				—				93
	(25,339		)		(40		)		(30		)		(1,784		)		—				(27,193		)
Income (loss) before income taxes and income of consolidated subsidiaries	(32,487		)		1,703				4,292				7,352				—				(19,140		)
Equity in income of subsidiaries	13,319				—				—				—				(13,319		)		—
Income (loss) before income taxes	(19,168		)		1,703				4,292				7,352				(13,319		)		(19,140		)
Income tax expense (benefit)	(138		)		—				(1,511		)		6,626				(5,087		)		(110		)
Net income (loss)	(19,030		)		1,703				5,803				726				(8,232		)		(19,030		)
Less net loss attributable to noncontrolling interest	—				—				—				—				—				—
Net income (loss) attributable to the Parent company	$	(19,030	)		$	1,703			$	5,803			$	726			$	(8,232	)		$	(19,030	)
CONSOLIDATING STATEMENTS OF OPERATIONS
Three Months Ended March 31, 2013
(In thousands)
	Parent/				Co-Issuer				Guarantor				Non-Guarantor				Consolidating				Total
	Issuer								Subsidiaries				Subsidiaries				Adjustments
Revenues	$	—			$	19,336			$	50,687			$	100,401			$	(8,976	)		$	161,448
Costs and expenses:
Cost of sales	—				16,954				40,421				82,022				(8,976		)		130,421
Depreciation, depletion and amortization	94				2,531				5,189				6,612				—				14,426
Selling and administrative	3,054				855				2,637				5,341				—				11,887
Heritage health benefit expenses	3,689				—				—				262				—				3,951
Gain on sales of assets	—				—				(133		)		(101		)		—				(234		)
Other operating income	—				—				(4,737		)		—				—				(4,737		)
	6,837				20,340				43,377				94,136				(8,976		)		155,714
Operating income (loss)	(6,837		)		(1,004		)		7,310				6,265				—				5,734
Other income (expense):
Interest expense	(7,584		)		(10		)		(74		)		(2,500		)		8				(10,160		)
Interest income	30				10				44				221				(8		)		297
Other income (loss)	—				—				92				(22		)		—				70
	(7,554		)		—				62				(2,301		)		—				(9,793		)
Income (loss) before income taxes and income of consolidated subsidiaries	(14,391		)		(1,004		)		7,372				3,964				—				(4,059		)
Equity in income of subsidiaries	10,304				—				—				—				(10,304		)		—
Income (loss) before income taxes	(4,087		)		(1,004		)		7,372				3,964				(10,304		)		(4,059		)
Income tax expense (benefit)	—				—				496				2,823				(3,291		)		28
Net income (loss)	(4,087		)		(1,004		)		6,876				1,141				(7,013		)		(4,087		)
Less net loss attributable to noncontrolling interest	(1,702		)		—				—				—				—				(1,702		)
Net income (loss) attributable to the Parent company	$	(2,385	)		$	(1,004	)		$	6,876			$	1,141			$	(7,013	)		$	(2,385	)
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Three Months Ended March 31, 2014
(In thousands)
	Parent/Issuer				Co-Issuer				Guarantor				Non-Guarantor				Consolidating				Total
									Subsidiaries				Subsidiaries				Adjustments
Net income (loss)	$	(19,030	)		$	1,703			$	5,803			$	726			$	(8,232	)		$	(19,030	)
Other comprehensive income (loss)
Amortization of accumulated actuarial gains or losses, pension	359				2				—				128				(130		)		359
Amortization of accumulated actuarial gains or losses, transition obligations, and prior service costs, postretirement medical benefit	5				—				(119		)		88				31				5
Tax effect of other comprehensive income gains	(138		)		—				—				—				—				(138		)
Other comprehensive income (loss)	226				2				(119		)		216				(99		)		226
Comprehensive income (loss) attributable to the Parent company	$	(18,804	)		$	1,705			$	5,684			$	942			$	(8,331	)		$	(18,804	)
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Three Months Ended March 31, 2013
(In thousands)
	Parent/Issuer				Co-Issuer				Guarantor				Non-Guarantor				Consolidating				Total
									Subsidiaries				Subsidiaries				Adjustments
Net income (loss)	$	(4,087	)		$	(1,004	)		$	6,876			$	1,141			$	(7,013	)		$	(4,087	)
Other comprehensive income (loss)
Amortization of accumulated actuarial gains or losses, pension	741				6				—				193				(199		)		741
Amortization of accumulated actuarial gains or losses, transition obligations, and prior service costs, postretirement medical benefit	1,001				—				—				213				(213		)		1,001
Other comprehensive income (loss)	1,742				6				—				406				(412		)		1,742
Comprehensive income (loss) attributable to the Parent company	$	(2,345	)		$	(998	)		$	6,876			$	1,547			$	(7,425	)		$	(2,345	)
CONSOLIDATING STATEMENTS OF CASH FLOWS
Three Months Ended March 31, 2014
(In thousands)
Statements of Cash Flows		Parent/				Co-Issuer				Guarantor				Non-Guarantor				Consolidating				Total
		Issuer								Subsidiaries				Subsidiaries				Adjustments
Cash flows from operating activities:
Net income (loss)		$	(19,030	)		$	1,703			$	5,803			$	726			$	(8,232	)		$	(19,030	)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Equity in income of subsidiaries		(13,319		)		—				—				—				13,319				—
Depreciation, depletion, and amortization		76				2,524				6,269				7,190				—				16,059
Accretion of asset retirement obligation and receivable		—				18				1,278				2,183				—				3,479
Non-cash tax benefits		(138		)		—				—				—				—				(138		)
Amortization of intangible assets and liabilities, net		—				146				—				7				—				153
Share-based compensation		569				7				37				115				—				728
Loss (gain) on sales of assets		—				—				(1		)		39				—				38
Amortization of deferred financing costs		149				—				—				122				—				271
Loss on foreign exchange		6,790				—				—				—				—				6,790
Changes in operating assets and liabilities:
Receivables, net		(178		)		480				(2,738		)		6,104				1,534				5,202
Inventories		—				4,316				944				(735		)		—				4,525
Excess of black lung benefit obligation over trust assets		701				—				—				—				—				701
Accounts payable and accrued expenses		5,670				(3,386		)		7,356				1,327				(8		)		10,959
Deferred revenue		—				(2,415		)		844				269				—				(1,302		)
Income tax payable		—				—				—				28				—				28
Accrual for workers’ compensation		(69		)		—				—				—				—				(69		)
Asset retirement obligations		—				—				(9		)		(1,343		)		—				(1,352		)
Accrual for postretirement medical benefits		(374		)		—				935				345				—				906
Pension and SERP obligations		83				1				113				(490		)		—				(293		)
Other assets and liabilities		(183		)		(309		)		(1,616		)		(2,880		)		6,981				1,993
Distributions received from subsidiaries		42,500				—				—				—				(42,500		)		—
Net cash provided by (used in) operating activities		23,247				3,085				19,215				13,007				(28,906		)		29,648
Cash flows from investing activities:
Additions to property, plant and equipment		38				(35		)		(2,609		)		(444		)		—				(3,050		)
Change in restricted investments and bond collateral and reclamation deposits		(471,151		)		5,998				4				(395		)		—				(465,544		)
Receivable from customer for property and equipment purchases		—				—				—				(10		)		—				(10		)
Other		—				—				—				(60		)		—				(60		)
Net cash provided by (used in) investing activities		(471,113		)		5,963				(2,605		)		(909		)		—				(468,664		)
Cash flows from financing activities:
Change in book overdrafts		—				—				(317		)		2				—				(315		)
Borrowings from long-term debt		454,219				—				—				—				—				454,219
Repayments of long-term debt		—				—				(875		)		(5,364		)		—				(6,239		)
Debt issuance costs and other refinancing costs		(7,598		)		—				—				—				—				(7,598		)
Dividends/distributions		(261		)		(8,500		)		(18,000		)		(16,000		)		42,500				(261		)
Transactions with Parent/affiliates		4,939				154				3,434				5,067				(13,594		)		—
Net cash provided by (used in) financing activities		451,299				(8,346		)		(15,758		)		(16,295		)		28,906				439,806
Net increase (decrease) in cash and cash equivalents		3,433				702				852				(4,197		)		—				790
Cash and cash equivalents, beginning of period		25,326				3,341				7,942				24,501				—				61,110
Cash and cash equivalents, end of period		$	28,759			$	4,043			$	8,794			$	20,304			$	—			$	61,900
CONSOLIDATING STATEMENTS OF CASH FLOWS
Three Months Ended March 31, 2013
(In thousands)
Statements of Cash Flows		Parent/				Co-Issuer				Guarantor				Non-Guarantor				Consolidating				Total
		Issuer								Subsidiaries				Subsidiaries				Adjustments
Cash flows from operating activities:
Net income (loss)		$	(4,087	)		$	(1,004	)		$	6,876			$	1,141			$	(7,013	)		$	(4,087	)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Equity in income of subsidiaries		(10,304		)		—				—				—				10,304				—
Depreciation, depletion, and amortization		94				2,531				5,189				6,612				—				14,426
Accretion of asset retirement obligation and receivable		—				16				1,050				2,114				—				3,180
Amortization of intangible assets and liabilities, net		—				156				—				8				—				164
Share-based compensation		682				10				681				1,013				—				2,386
Gain on sales of assets		—				—				(133		)		(101		)		—				(234		)
Amortization of deferred financing costs		771				—				13				149				—				933
Loss on sales of investment securities		—				—				7				—				—				7
Changes in operating assets and liabilities:
Receivables, net		49				2,885				(2,467		)		(3,355		)		3,008				120
Inventories		—				(2,181		)		(753		)		247				—				(2,687		)
Excess of black lung benefit obligation over trust assets		83				—				—				—				—				83
Accounts payable and accrued expenses		(8,202		)		5,960				(10		)		6,979				(1,482		)		3,245
Deferred revenue		—				(1,927		)		1,703				384				—				160
Income tax payable		—				—				(1,679		)		1,706				—				27
Accrual for workers’ compensation		(191		)		—				—				—				—				(191		)
Asset retirement obligations		—				—				(190		)		(3,017		)		—				(3,207		)
Accrual for postretirement medical benefits		(100		)		—				1,478				607				—				1,985
Pension and SERP obligations		320				4				177				241				—				742
Other assets and liabilities		(187		)		465				(195		)		4,081				—				4,164
Distributions received from subsidiaries		19,600				—				—				—				(19,600		)		—
Net cash provided by (used in) operating activities		(1,472		)		6,915				11,747				18,809				(14,783		)		21,216
Cash flows from investing activities:
Additions to property, plant and equipment		(157		)		(134		)		(4,224		)		(786		)		—				(5,301		)
Change in restricted investments and bond collateral and reclamation deposits		(398		)		(3		)		(151		)		(5,883		)		—				(6,435		)
Net proceeds from sales of assets		—				—				309				132				—				441
Proceeds from the sale of investments		—				—				120				5,499				—				5,619
Receivable from customer for property and equipment purchases		—				—				—				(49		)		—				(49		)
Net cash provided by (used in) investing activities		(555		)		(137		)		(3,946		)		(1,087		)		—				(5,725		)
Cash flows from financing activities:
Change in book overdrafts		—				—				(7		)		827				—				820
Repayments of long-term debt		—				—				(713		)		(5,860		)		—				(6,573		)
Borrowings on revolving lines of credit		—				—				—				6,000				—				6,000
Repayments on revolving lines of credit		—				—				—				(6,000		)		—				(6,000		)
Debt issuance costs and other refinancing costs		—				—				—				(156		)		—				(156		)
Dividends/distributions		(340		)		(6,500		)		(8,000		)		(5,100		)		19,600				(340		)
Transactions with Parent/affiliates		(22,106		)		(16		)		2,255				4,076				15,791				—
Net cash provided by (used in) financing activities		(22,446		)		(6,516		)		(6,465		)		(6,213		)		35,391				(6,249		)
Net increase (decrease) in cash and cash equivalents		(24,473		)		262				1,336				11,509				20,608				9,242
Cash and cash equivalents, beginning of period		14,836				4,545				5,362				6,867				—				31,610
Cash and cash equivalents, end of period		$	(9,637	)		$	4,807			$	6,698			$	18,376			$	20,608			$	40,852

BASIS_OF_PRESENTATION_BASIS_OF

BASIS OF PRESENTATION BASIS OF PRESENTATION (Tables)	3 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
Restructuring reserve	'
	The table below represents the restructuring provision activity during the three months ended March 31, 2014 (in millions):
	Beginning Balance		Restructuring Charges		Restructuring Payments		Ending Balance
	$	5.1	$	0.4	$	0.4	$	5.1

INVENTORIES_Tables

INVENTORIES (Tables)	3 Months Ended
	Mar. 31, 2014
Inventory Disclosure [Abstract]	'
Inventories	'
	Inventories consisted of the following:
		March 31, 2014			December 31, 2013
		(In thousands)
	Coal stockpiles	$	1,189		$	543
	Coal fuel inventories	1,844			6,161
	Materials and supplies	33,189			34,233
	Reserve for obsolete inventory	(775		)	(965		)
	Total	$	35,447		$	39,972

RESTRICTED_INVESTMENTS_AND_BON1

RESTRICTED INVESTMENTS AND BOND COLLATERAL (Tables)	3 Months Ended
	Mar. 31, 2014
Disclosure Restricted Investments and Bond Collateral [Abstract]	'
Components of restricted investments and bond collateral	'
	The Company’s restricted investments and bond collateral consist of the following:
		March 31, 2014			31-Dec-13
		(In thousands)
	Coal Segment:
	WML debt reserve account	$	13,068		$	13,067
	Reclamation bond collateral:
	Kemmerer Mine	24,944			24,966
	Absaloka Mine	11,670			11,653
	Rosebud Mine	3,145			3,145
	Beulah Mine	1,270			1,270
	Power Segment:
	Letter of credit account	—			5,998
	Corporate Segment:
	Proceeds from the New Notes held in escrow	454,219			—
	Other requirements for Sherritt Acquisition held in escrow	16,900			—
	Postretirement medical benefit bonds	8,481			8,467
	Workers’ compensation bonds	6,686			6,667
	Total restricted investments and bond collateral	540,383			75,233
	Less current portion	(16,900		)	(5,998		)
	Total restricted investments and bond collateral, less current portion	$	523,483		$	69,235
Carrying value and estimated fair value of restricted investments and bond collateral	'
	The Company’s carrying value and estimated fair value of its restricted investments and bond collateral at March 31, 2014 are as follows:
		Carrying Value			Fair Value
		(In thousands)
	Cash and cash equivalents	$	503,391		$	503,391
	Time deposits	2,444			2,444
	Held-to-maturity securities	34,548			34,707
		$	540,383		$	540,542
Amortized cost, gross unrealized holding gains and losses and fair value of held-to-maturity securities	'
	The amortized cost, gross unrealized holding gains and fair value of held-to-maturity securities at March 31, 2014 is as follows (in thousands):
	Amortized cost	$	34,548
	Gross unrealized holding gains	440
	Gross unrealized holding losses	(281		)
	Fair value	$	34,707
Restricted Investments and Bond Collateral [Member]	'
Schedule of Held-to-maturity Securities [Line Items]	'
Maturities of held-to-maturity securities	'
	Maturities of held-to-maturity securities are as follows at March 31, 2014:
		Amortized Cost			Fair Value
		(In thousands)
	Due within one year	$	1,193		$	1,217
	Due in five years or less	19,539			19,752
	Due after five years to ten years	6,718			6,717
	Due in more than ten years	7,098			7,021
		$	34,548		$	34,707

LINES_OF_CREDIT_AND_LONGTERM_D1

LINES OF CREDIT AND LONG-TERM DEBT (Tables)	3 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
Outstanding lines of credit and long-term debt	'
	The amounts outstanding under the Company’s long-term debt consisted of the following as of the dates indicated:
		Total Debt Outstanding
		March 31, 2014			December 31, 2013
		(In thousands)
	10.75% Senior Notes due 2018	$	251,500		$	251,500
	New Notes - 10.75% senior notes due 2018	425,000			—
	8.02% WML term debt due 2018	81,000			85,500
	Capital lease obligations	21,465			10,153
	Other	1,093			1,209
	Debt premium (discount), net	20,173			(8,525		)
	Total debt outstanding	800,231			339,837
	Less current installments	(48,586		)	(44,343		)
	Total debt outstanding, less current installments	$	751,645		$	295,494
Contractual maturities of all long-term debt	'
	The following table presents aggregate contractual debt maturities of all long-term debt:
		As of March 31, 2014
		(In thousands)
	2014	$	19,569
	2015	24,710
	2016	24,055
	2017	24,664
	2018	684,556
	Thereafter	2,504
	Total	780,058
	Plus: debt premium (discount), net	20,173
	Total debt	$	800,231

POSTRETIREMENT_MEDICAL_BENEFIT1

POSTRETIREMENT MEDICAL BENEFITS AND PENSION (Tables)	3 Months Ended
	Mar. 31, 2014
Postretirement Medical Benefits	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'
Components of net periodic benefit cost	'
	The components of net periodic postretirement medical benefit cost are as follows:
		Three Months Ended March 31,
		2014			2013
		(In thousands)
	Components of net periodic benefit cost:
	Service cost	$	822		$	1,109
	Interest cost	3,203			3,035
	Amortization of deferred items	5			1,001
	Total net periodic benefit cost	$	4,030		$	5,145
	The following table shows the net periodic postretirement medical benefit costs that relate to current and former mining operations:
		Three Months Ended March 31,
		2014			2013
		(In thousands)
	Former mining operations	$	2,403		$	3,119
	Current operations	1,627			2,026
	Total net periodic benefit cost	$	4,030		$	5,145
Pension	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'
Components of net periodic benefit cost	'
	The Company incurred net periodic benefit costs of providing these pension benefits as follows:
		Three Months Ended March 31,
		2014			2013
		(In thousands)
	Components of net periodic benefit cost:
	Service cost	$	500		$	534
	Interest cost	1,747			1,625
	Expected return on plan assets	(2,154		)	(2,060		)
	Amortization of deferred items	359			741
	Total net periodic pension cost	$	452		$	840

HERITAGE_HEALTH_BENEFIT_EXPENS1

HERITAGE HEALTH BENEFIT EXPENSES (Tables)	3 Months Ended
	Mar. 31, 2014
Heritage Health Benefit Expenses [Abstract]	'
Components of costs of benefits to former mining operation employees	'
	The components of these expenses are as follows:
		Three Months Ended March 31,
		2014		2013
		(In thousands)
	Health care benefits	$	2,276	$	3,176
	Combined benefit fund payments	512		576
	Workers’ compensation benefits	136		116
	Black lung benefits	620		83
	Total	$	3,544	$	3,951

ASSET_RETIREMENT_OBLIGATIONS_C1

ASSET RETIREMENT OBLIGATIONS, CONTRACTUAL THIRD-PARTY RECLAMATION RECEIVABLES, AND RECLAMATION DEPOSITS (Tables)	3 Months Ended
	Mar. 31, 2014
Asset Retirement Obligation Disclosure [Abstract]	'
Summary of asset retirement obligations, contractual third-party reclamation receivables and reclamation deposits	'
	The asset retirement obligation, contractual third-party reclamation receivable, and reclamation deposits for each of the Company’s mines and ROVA at March 31, 2014 are summarized below:
		Asset			Contractual			Reclamation
		Retirement			Third-Party			Deposits
		Obligation			Reclamation
					Receivable
		(In thousands)
	Rosebud	$	127,989		$	21,656		$	75,315
	Jewett	74,247			74,247			—
	Absaloka	37,286			346			—
	Beulah	17,764			—			—
	Kemmerer	17,569			—			—
	Savage	5,499			—			—
	ROVA	909			—			—
	Total	$	281,263		$	96,249		$	75,315
Changes in Company's asset retirement obligations	'
	Changes in the Company’s asset retirement obligations were as follows:
		Three Months Ended March 31,
		2014			2013
		(In thousands)
	Asset retirement obligations, beginning of year (including current portion)	$	279,864		$	263,847
	Accretion	5,836			5,481
	Liabilities settled	(4,437		)	(5,839		)
	Asset retirement obligations, end of period	281,263			263,489
	Less current portion	(22,227		)	(23,154		)
	Asset retirement obligations, less current portion	$	259,036		$	240,335
Carrying value and estimated fair value of reclamation deposits	'
	The Company’s carrying value and estimated fair value of its reclamation deposits at March 31, 2014 are as follows:
		Carrying Value			Fair Value			Fair Value Hierarchy
		(In thousands)
	Cash and cash equivalents	$	49,627		$	49,627		Level 1
	Held-to-maturity securities	25,688			26,401			Level 2
		$	75,315		$	76,028
Amortized cost, gross unrealized holding gains and losses and fair value of held-to-maturity securities	'
	The amortized cost, gross unrealized holding gains and losses and fair value of held-to-maturity securities at March 31, 2014 are as follows (in thousands):
	Amortized cost	$	25,688
	Gross unrealized holding gains	826
	Gross unrealized holding losses	(113		)
	Fair value	$	26,401
Reclamation Deposits [Member]	'
Schedule of Held-to-maturity Securities [Line Items]	'
Schedule of maturities of held-to-maturity investments	'
	Maturities of held-to-maturity securities are as follows at March 31, 2014:
		Amortized Cost			Fair Value
		(In thousands)
	Within one year	$	479		$	468
	Due in five years or less	17,562			17,880
	Due after five years to ten years	4,869			5,023
	Due in more than ten years	2,778			3,030
		$	25,688		$	26,401

DERIVATIVE_INSTRUMENTS_Tables

DERIVATIVE INSTRUMENTS (Tables)	3 Months Ended
	Mar. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]	'
	The fair value of outstanding derivative instruments not designated as hedging instruments on the accompanying Consolidated Balance Sheets was as follows (in thousands):
	Derivative Instruments	Balance Sheet Location	March 31, 2014
	Canadian dollar foreign exchange forward contracts	Other current assets	$	246
	Canadian dollar foreign exchange forward contracts	Other current liabilities	(7,036		)
	The effect of derivative instruments not designated as hedging instruments on the accompanying Consolidated Statements of Operations was as follows (in thousands):
	Derivative Instruments	Statement of	Three Months Ended March 31, 2014
		Operations Location
	Canadian dollar foreign exchange forward contracts	Loss on foreign exchange	$	(6,790	)

FAIR_VALUE_MEASUREMENTS_Tables

FAIR VALUE MEASUREMENTS (Tables)	3 Months Ended
	Mar. 31, 2014
Fair Value Disclosures [Abstract]	'
Estimated fair values of Company's debt	'
	The estimated fair values of the Company’s debt with fixed interest rates are as follows:
		Carrying Value		Fair Value
		(In thousands)
	31-Dec-13	$	328,473	$	364,329
	March 31, 2014	$	777,670	$	823,603

SHAREHOLDERS_EQUITY_AND_ACCUMU1

SHAREHOLDERS' EQUITY AND ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Tables)	3 Months Ended
	Mar. 31, 2014
Stockholders' Equity Note [Abstract]	'
Changes in Accumulated Other Comprehensive Income by component	'
	The following table reflects the changes in accumulated other comprehensive loss by component:
		Pension				Postretirement			Tax effect of			Accumulated
						medical benefits			other			other
									comprehensive			comprehensive
									income gains			loss
		(In thousands)
	Balance at December 31, 2013	$	(12,255	)		$	(20,292	)	$	(31,048	)	$	(63,595	)
	Other comprehensive income (loss) before reclassifications	—				—			(138		)	(138		)
	Amounts reclassified from accumulated other comprehensive income (loss)	359				5			—			364
	Balance at March 31, 2014	$	(11,896	)		$	(20,287	)	$	(31,186	)	$	(63,369	)
Reclassifications out of Accumulated Other Comprehensive Income for the period	'
	The following table reflects the reclassifications out of accumulated other comprehensive loss for the three months ended March 31, 2014 are as follows (in thousands):
	Details about accumulated other comprehensive loss components		Amount reclassified from accumulated				Affected line item
			other comprehensive loss1				in the statement
							where net income
			Three Months Ended March 31, 2014				(loss) is presented
	Amortization of defined benefit pension items
	Actuarial losses		$	359			2
	Amortization of postretirement medical items
	Prior service costs		$	(159	)		3
	Actuarial losses		164				3
			$	5			Total
	____________________
	-1	Amounts in parentheses indicate debits to income/loss.
	-2	These accumulated other comprehensive loss components are included in the computation of net periodic pension cost. (See Note 5 - Pension for additional details)
	-3	These accumulated other comprehensive loss components are included in the computation of net periodic postretirement medical cost. (See Note 5 - Postretirement Medical Benefits for additional details)

SHAREBASED_COMPENSATION_Tables

SHARE-BASED COMPENSATION (Tables)	3 Months Ended
	Mar. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Compensation cost arising from share-based arrangements	'
	The Company recognized compensation expense from share-based arrangements shown in the following table:
		Three Months Ended March 31,
		2014			2013
		(In thousands)
	Recognition of fair value of restricted stock units, stock options and SARs over vesting period; and issuance of stock	$	728		$	1,663
	Contributions of stock to the Company's 401(k) plan	—			723
	Total share-based compensation expense	$	728		$	2,386
Summary of Restricted Stock Unit activity	'
	A summary of restricted stock award activity for the three months ended March 31, 2014 is as follows:
		Units		Weighted			Unamortized
				Average			Compensation
				Grant-Date			Expense
				Fair Value			(In thousands)
	Non-vested at December 31, 2013	588,727		$	9.37
	Granted	—		—
	Vested	—		—
	Non-vested at March 31, 2014	588,727		$	9.37		$	1,618		(1)
	____________________
	-1	Expected to be recognized over the next three years.
Summary of Stock Option Activity	'
	A summary of stock option activity for the three months ended March 31, 2014 is as follows:
		Stock Options		Weighted			Weighted			Aggregate Intrinsic			Unamortized
				Average			Average			Value			Compensation
				Exercise Price			Remaining			(In thousands)			Expense
							Contractual						(In thousands)
							Life
							(In years)
	Outstanding at December 31, 2013	145,806		$	21.97
	Exercised	—		$	—
	Expired	—		$	—
	Outstanding and exercisable at March 31, 2014	145,806		$	21.97		4			$	1,139		$	—
Summary of Stock Appreciation Rights	'
	A summary of SARs activity for the three months ended March 31, 2014 is as follows:
		SARs		Weighted			Weighted		Aggregate Intrinsic			Unamortized
				Average Exercise Price			Average		Value			Compensation
							Remaining		(In thousands)			Expense
							Contractual					(In thousands)
							Life
							(In years)
	Outstanding at December 31, 2013	70,734		$	22.6
	Exercised	(25,667	)	$	—
	Expired	—		$	—
	Outstanding and exercisable at March 31, 2014	45,067		$	23.95		1.9		$	352		$	—

EARNINGS_PER_SHARE_Tables

EARNINGS PER SHARE (Tables)	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Antidilutive Securities Excluded from Computation of Earnings Per Share	'
	The table below shows the number of shares that were excluded from the calculation of diluted loss per share because their inclusion would be anti-dilutive to the calculation:
		Three Months Ended March 31,
		2014	2013
		(In thousands)
	Convertible securities	828	1,093
	Restricted stock units, stock options and SARs	779	978
	Total shares excluded from diluted shares calculation	1,607	2,071

BUSINESS_SEGMENT_INFORMATION_T

BUSINESS SEGMENT INFORMATION (Tables)	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Summarized financial information by segment	'
	Summarized financial information by segment is as follows:
		Coal			Power			Heritage			Corporate			Consolidated
		(In thousands)
	Three Months Ended March 31, 2014
	Revenues	$	158,190		$	22,012		$	—		$	—		$	180,202
	Restructuring charges	—			397			—			—			397
	Depreciation, depletion, and amortization	13,459			2,524			—			76			16,059
	Operating income (loss)	13,447			1,744			(3,830		)	(3,308		)	8,053
	Total assets	697,916			167,998			15,622			525,611			1,407,147
	Capital expenditures	3,053			35			—			(38		)	3,050
	Three Months Ended March 31, 2013
	Revenues	$	142,112		$	19,336		$	—		$	—		$	161,448
	Depreciation, depletion, and amortization	11,801			2,531			—			94			14,426
	Operating income (loss)	13,472			(1,003		)	(4,175		)	(2,560		)	5,734
	Total assets	711,128			186,309			15,877			29,701			943,015
	Capital expenditures	5,010			134			—			157			5,301
Reconciliation of segment operating income to income (loss)	'
	A reconciliation of segment income (loss) from operations to loss before income taxes follows:
		Three Months Ended March 31,
		2014			2013
		(In thousands)
	Income from operations	$	8,053		$	5,734
	Interest expense	(20,798		)	(10,160		)
	Interest income	302			297
	Loss on foreign exchange	(6,790		)	—
	Other income	93			70
	Loss before income taxes	$	(19,140	)	$	(4,059	)

SUPPLEMENTAL_CONSOLIDATING_FIN1

SUPPLEMENTAL CONSOLIDATING FINANCIAL INFORMATION (Tables)	3 Months Ended
	Mar. 31, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Supplemental Consolidating Balance Sheet Information	'
	CONSOLIDATING BALANCE SHEETS
	March 31, 2014
	(In thousands)
	Assets		Parent/				Co-Issuer				Guarantor				Non-				Consolidating				Total
			Issuer								Subsidiaries				Guarantor				Adjustments
															Subsidiaries
	Current assets:
	Cash and cash equivalents		$	28,759			$	4,043			$	8,794			$	20,304			$	—			$	61,900
	Receivables:
	Trade		—				12,456				22,857				29,402				—				64,715
	Contractual third-party reclamation receivables		—				—				44				8,169				—				8,213
	Intercompany receivable/payable		(2,263		)		—				3,499				(33,946		)		32,710				—
	Other		273				208				244				681				(31		)		1,375
			(1,990		)		12,664				26,644				4,306				32,679				74,303
	Inventories		—				1,845				15,133				18,469				—				35,447
	Restricted investments and bond collateral		16,900				—				—				—				—				16,900
	Other current assets		7,044				425				3,168				6,005				1				16,643
	Total current assets		50,713				18,977				53,739				49,084				32,680				205,193
	Property, plant and equipment:
	Land and mineral rights		—				1,395				104,640				172,163				—				278,198
	Plant and equipment		3,966				220,932				245,368				202,923				—				673,189
			3,966				222,327				350,008				375,086				—				951,387
	Less accumulated depreciation, depletion and amortization		2,781				74,177				138,718				246,079				(1		)		461,754
	Net property, plant and equipment		1,185				148,150				211,290				129,007				1				489,633
	Advanced coal royalties		—				—				3,000				4,263				—				7,263
	Reclamation deposits		—				—				—				75,315				—				75,315
	Restricted investments and bond collateral		469,385				—				36,615				17,483				—				523,483
	Contractual third-party reclamation receivables		—				—				302				87,734				—				88,036
	Intangible assets		—				871				—				228				—				1,099
	Investment in subsidiaries		237,926				—				—				3,770				(241,696		)		—
	Other assets		15,563				—				569				4,493				(3,500		)		17,125
	Total assets		$	774,772			$	167,998			$	305,515			$	371,377			$	(212,515	)		$	1,407,147
	CONSOLIDATING BALANCE SHEETS
	March 31, 2014
	(In thousands)
	Liabilities and Shareholders’ Deficit		Parent/				Co-Issuer				Guarantor				Non-				Consolidating				Total
			Issuer								Subsidiaries				Guarantor				Adjustments
															Subsidiaries
	Current liabilities
	Current installments of long-term debt		$	22,785			$	—			$	4,596			$	21,205			$	—			$	48,586
	Accounts payable and accrued expenses:
	Trade		9,000				6,331				14,710				32,557				—				62,598
	Production taxes		—				405				22,442				23,947				—				46,794
	Workers’ compensation		712				—				—				—				—				712
	Postretirement medical benefits		12,042				—				329				1,583				1				13,955
	SERP		390				—				—				—				—				390
	Deferred revenue		—				9,581				4,813				1,640				—				16,034
	Asset retirement obligations		—				—				3,554				18,673				—				22,227
	Other current liabilities		19,196				5,053				—				172				(31		)		24,390
	Total current liabilities		64,125				21,370				50,444				99,777				(30		)		235,686
	Long-term debt, less current installments		677,385				—				12,912				64,848				(3,500		)		751,645
	Workers’ compensation, less current portion		6,680				—				—				—				—				6,680
	Excess of black lung benefit obligation over trust assets		9,376				—				—				—				—				9,376
	Postretirement medical benefits, less current portion		185,447				—				50,472				35,356				—				271,275
	Pension and SERP obligations, less current portion		12,921				98				9,494				1,011				—				23,524
	Deferred revenue, less current portion		—				38,325				—				4,974				—				43,299
	Asset retirement obligations, less current portion		—				909				51,300				206,827				—				259,036
	Intangible liabilities		—				5,339				—				—				—				5,339
	Other liabilities		6,440				—				—				1,063				—				7,503
	Intercompany receivable/payable		18,613				—				(4,326		)		5,633				(19,920		)		—
	Total liabilities		980,987				66,041				170,296				419,489				(23,450		)		1,613,363
	Shareholders’ deficit
	Preferred stock		121				—				—				—				—				121
Common stock		37,155				5				110				132				(247		)		37,155
Other paid-in capital		134,953				52,842				92,896				66,027				(211,766		)		134,952
Accumulated other comprehensive loss		(63,369		)		(162		)		17,372				(13,937		)		(3,273		)		(63,369		)
Accumulated earnings (deficit)		(315,075		)		49,272				24,841				(100,334		)		26,221				(315,075		)
Total equity (deficit)		(206,215		)		101,957				135,219				(48,112		)		(189,065		)		(206,216		)
Total liabilities and shareholders’ deficit		$	774,772			$	167,998			$	305,515			$	371,377			$	(212,515	)		$	1,407,147
CONSOLIDATING BALANCE SHEETS
December 31, 2013
(In thousands)
Assets		Parent/				Co-Issuer				Guarantor				Non-				Consolidating				Total
		Issuer								Subsidiaries				Guarantor				Adjustments
														Subsidiaries
Current assets:
Cash and cash equivalents		$	25,326			$	3,341			$	7,942			$	24,501			$	—			$	61,110
Receivables:
Trade		—				12,934				17,389				35,873				—				66,196
Contractual third-party reclamation receivables		—				—				44				8,443				—				8,487
Intercompany receivable/payable		(3,568		)		—				4,384				(33,681		)		32,865				—
Other		95				210				2,974				1,831				(24		)		5,086
		(3,473		)		13,144				24,791				12,466				32,841				79,769
Inventories		—				6,161				16,077				17,735				(1		)		39,972
Deferred income taxes		—				—				870				—				(870		)		—
Restricted investments and bond collateral		—				5,998				—				—				—				5,998
Other current assets		6,115				143				6,883				5,049				—				18,190
Total current assets		27,968				28,787				56,563				59,751				31,970				205,039
Property, plant and equipment:
Land and mineral rights		—				1,395				104,631				172,163				(1		)		278,188
Plant and equipment		3,939				220,872				229,998				202,886				1				657,696
		3,939				222,267				334,629				375,049				—				935,884
Less accumulated depreciation, depletion and amortization		2,705				71,653				132,189				239,302				(1		)		445,848
Net property, plant and equipment		1,234				150,614				202,440				135,747				1				490,036
Advanced coal royalties		—				—				3,000				4,311				—				7,311
Reclamation deposits		—				—				—				74,921				—				74,921
Restricted investments and bond collateral		15,134				—				36,619				17,482				—				69,235
Contractual third-party reclamation receivables		—				—				293				88,010				—				88,303
Intangible assets		—				1,283				—				238				(1		)		1,520
Investment in subsidiaries		266,847				—				—				3,770				(270,617		)		—
Other assets		8,636				—				586				3,098				(2,000		)		10,320
Total assets		$	319,819			$	180,684			$	299,501			$	387,328			$	(240,647	)		$	946,685
CONSOLIDATING BALANCE SHEETS
December 31, 2013
(In thousands)
Liabilities and Shareholders’ Deficit		Parent/				Co-Issuer				Guarantor				Non-Guarantor				Consolidating				Total
		Issuer								Subsidiaries				Subsidiaries				Adjustments
Current liabilities
Current installments of long-term debt		$	20,392			$	—			$	2,790			$	21,161			$	—			$	44,343
Accounts payable and accrued expenses:
Trade		4,122				10,119				12,522				30,743				1				57,507
Production taxes		—				3				17,429				24,472				1				41,905
Workers’ compensation		717				—				—				—				—				717
Postretirement medical benefits		12,042				—				329				1,583				1				13,955
SERP		390				—				—				—				—				390
Deferred revenue		—				9,024				3,969				1,075				—				14,068
Asset retirement obligations		—				—				3,104				20,250				(1		)		23,353
Other current liabilities		11,302				5,053				317				142				(24		)		16,790
Total current liabilities		48,965				24,199				40,460				99,426				(22		)		213,028
Long-term debt, less current installments		224,582				—				2,664				70,248				(2,000		)		295,494
Workers’ compensation, less current portion		6,744				—				—				—				—				6,744
Excess of black lung benefit obligation over trust assets		8,675				—				—				—				—				8,675
Postretirement medical benefits, less current portion		185,858				—				49,418				35,098				—				270,374
Pension and SERP obligations, less current portion		13,069				99				9,381				1,627				—				24,176
Deferred revenue, less current portion		—				41,297				—				5,271				(1		)		46,567
Asset retirement obligations, less current portion		—				892				50,472				205,147				—				256,511
Intangible liabilities		—				5,606				—				—				—				5,606
Other liabilities		5,939				—				6,220				1,450				(6,220		)		7,389
Intercompany receivable/payable		13,866				—				525				6,434				(20,825		)		—
Total liabilities		507,698				72,093				159,140				424,701				(29,068		)		1,134,564
Shareholders’ deficit
Preferred stock		160				—				—				—				—				160
Common stock		36,479				5				110				132				(247		)		36,479
Other paid-in capital		134,861				52,835				94,370				64,401				(211,606		)		134,861
Accumulated other comprehensive loss		(63,595		)		(164		)		17,492				(14,153		)		(3,175		)		(63,595		)
Accumulated earnings (deficit)		(295,784		)		55,915				28,389				(87,753		)		3,449				(295,784		)
Total equity (deficit)		(187,879		)		108,591				140,361				(37,373		)		(211,579		)		(187,879		)
Total liabilities and shareholders’ deficit		$	319,819			$	180,684			$	299,501			$	387,328			$	(240,647	)		$	946,685
Supplemental Consolidating Statement of Operations Information	'
	CONSOLIDATING STATEMENTS OF OPERATIONS
	Three Months Ended March 31, 2014
	(In thousands)
		Parent/				Co-Issuer				Guarantor				Non-Guarantor				Consolidating				Total
		Issuer								Subsidiaries				Subsidiaries				Adjustments
	Revenues	$	—			$	22,012			$	64,292			$	93,898			$	—			$	180,202
	Costs and expenses:
	Cost of sales	—				16,454				50,558				71,618				—				138,630
	Depreciation, depletion and amortization	76				2,524				6,269				7,190				—				16,059
	Selling and administrative	3,746				894				2,994				5,697				—				13,331
	Heritage health benefit expenses	3,326				—				—				218				—				3,544
	Loss (gain) on sales of assets	—				—				(1		)		39				—				38
	Restructuring charges	—				397				—				—				—				397
	Other operating income	—				—				150				—				—				150
		7,148				20,269				59,970				84,762				—				172,149
	Operating income (loss)	(7,148		)		1,743				4,322				9,136				—				8,053
	Other income (expense):
	Interest expense	(18,673		)		(44		)		(110		)		(1,978		)		7				(20,798		)
	Interest income	123				4				25				157				(7		)		302
	Loss on foreign exchange	(6,790		)		—				—				—				—				(6,790		)
	Other income	1				—				55				37				—				93
		(25,339		)		(40		)		(30		)		(1,784		)		—				(27,193		)
	Income (loss) before income taxes and income of consolidated subsidiaries	(32,487		)		1,703				4,292				7,352				—				(19,140		)
	Equity in income of subsidiaries	13,319				—				—				—				(13,319		)		—
	Income (loss) before income taxes	(19,168		)		1,703				4,292				7,352				(13,319		)		(19,140		)
	Income tax expense (benefit)	(138		)		—				(1,511		)		6,626				(5,087		)		(110		)
	Net income (loss)	(19,030		)		1,703				5,803				726				(8,232		)		(19,030		)
	Less net loss attributable to noncontrolling interest	—				—				—				—				—				—
	Net income (loss) attributable to the Parent company	$	(19,030	)		$	1,703			$	5,803			$	726			$	(8,232	)		$	(19,030	)
	CONSOLIDATING STATEMENTS OF OPERATIONS
	Three Months Ended March 31, 2013
	(In thousands)
		Parent/				Co-Issuer				Guarantor				Non-Guarantor				Consolidating				Total
		Issuer								Subsidiaries				Subsidiaries				Adjustments
	Revenues	$	—			$	19,336			$	50,687			$	100,401			$	(8,976	)		$	161,448
	Costs and expenses:
	Cost of sales	—				16,954				40,421				82,022				(8,976		)		130,421
	Depreciation, depletion and amortization	94				2,531				5,189				6,612				—				14,426
	Selling and administrative	3,054				855				2,637				5,341				—				11,887
	Heritage health benefit expenses	3,689				—				—				262				—				3,951
	Gain on sales of assets	—				—				(133		)		(101		)		—				(234		)
	Other operating income	—				—				(4,737		)		—				—				(4,737		)
		6,837				20,340				43,377				94,136				(8,976		)		155,714
	Operating income (loss)	(6,837		)		(1,004		)		7,310				6,265				—				5,734
	Other income (expense):
	Interest expense	(7,584		)		(10		)		(74		)		(2,500		)		8				(10,160		)
	Interest income	30				10				44				221				(8		)		297
	Other income (loss)	—				—				92				(22		)		—				70
		(7,554		)		—				62				(2,301		)		—				(9,793		)
	Income (loss) before income taxes and income of consolidated subsidiaries	(14,391		)		(1,004		)		7,372				3,964				—				(4,059		)
	Equity in income of subsidiaries	10,304				—				—				—				(10,304		)		—
	Income (loss) before income taxes	(4,087		)		(1,004		)		7,372				3,964				(10,304		)		(4,059		)
	Income tax expense (benefit)	—				—				496				2,823				(3,291		)		28
	Net income (loss)	(4,087		)		(1,004		)		6,876				1,141				(7,013		)		(4,087		)
	Less net loss attributable to noncontrolling interest	(1,702		)		—				—				—				—				(1,702		)
	Net income (loss) attributable to the Parent company	$	(2,385	)		$	(1,004	)		$	6,876			$	1,141			$	(7,013	)		$	(2,385	)
Supplemental Consolidating Statements of Comprehensive Income (Loss)	'
	CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
	Three Months Ended March 31, 2014
	(In thousands)
		Parent/Issuer				Co-Issuer				Guarantor				Non-Guarantor				Consolidating				Total
										Subsidiaries				Subsidiaries				Adjustments
	Net income (loss)	$	(19,030	)		$	1,703			$	5,803			$	726			$	(8,232	)		$	(19,030	)
	Other comprehensive income (loss)
	Amortization of accumulated actuarial gains or losses, pension	359				2				—				128				(130		)		359
	Amortization of accumulated actuarial gains or losses, transition obligations, and prior service costs, postretirement medical benefit	5				—				(119		)		88				31				5
	Tax effect of other comprehensive income gains	(138		)		—				—				—				—				(138		)
	Other comprehensive income (loss)	226				2				(119		)		216				(99		)		226
	Comprehensive income (loss) attributable to the Parent company	$	(18,804	)		$	1,705			$	5,684			$	942			$	(8,331	)		$	(18,804	)
	CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
	Three Months Ended March 31, 2013
	(In thousands)
		Parent/Issuer				Co-Issuer				Guarantor				Non-Guarantor				Consolidating				Total
										Subsidiaries				Subsidiaries				Adjustments
	Net income (loss)	$	(4,087	)		$	(1,004	)		$	6,876			$	1,141			$	(7,013	)		$	(4,087	)
	Other comprehensive income (loss)
	Amortization of accumulated actuarial gains or losses, pension	741				6				—				193				(199		)		741
	Amortization of accumulated actuarial gains or losses, transition obligations, and prior service costs, postretirement medical benefit	1,001				—				—				213				(213		)		1,001
	Other comprehensive income (loss)	1,742				6				—				406				(412		)		1,742
	Comprehensive income (loss) attributable to the Parent company	$	(2,345	)		$	(998	)		$	6,876			$	1,547			$	(7,425	)		$	(2,345	)
Supplemental Consolidating Statement of Cash Flow Information	'
	CONSOLIDATING STATEMENTS OF CASH FLOWS
	Three Months Ended March 31, 2014
	(In thousands)
	Statements of Cash Flows		Parent/				Co-Issuer				Guarantor				Non-Guarantor				Consolidating				Total
			Issuer								Subsidiaries				Subsidiaries				Adjustments
	Cash flows from operating activities:
	Net income (loss)		$	(19,030	)		$	1,703			$	5,803			$	726			$	(8,232	)		$	(19,030	)
	Adjustments to reconcile net income (loss) to net cash provided by operating activities:
	Equity in income of subsidiaries		(13,319		)		—				—				—				13,319				—
	Depreciation, depletion, and amortization		76				2,524				6,269				7,190				—				16,059
	Accretion of asset retirement obligation and receivable		—				18				1,278				2,183				—				3,479
	Non-cash tax benefits		(138		)		—				—				—				—				(138		)
	Amortization of intangible assets and liabilities, net		—				146				—				7				—				153
	Share-based compensation		569				7				37				115				—				728
	Loss (gain) on sales of assets		—				—				(1		)		39				—				38
	Amortization of deferred financing costs		149				—				—				122				—				271
	Loss on foreign exchange		6,790				—				—				—				—				6,790
	Changes in operating assets and liabilities:
	Receivables, net		(178		)		480				(2,738		)		6,104				1,534				5,202
	Inventories		—				4,316				944				(735		)		—				4,525
	Excess of black lung benefit obligation over trust assets		701				—				—				—				—				701
	Accounts payable and accrued expenses		5,670				(3,386		)		7,356				1,327				(8		)		10,959
	Deferred revenue		—				(2,415		)		844				269				—				(1,302		)
	Income tax payable		—				—				—				28				—				28
	Accrual for workers’ compensation		(69		)		—				—				—				—				(69		)
	Asset retirement obligations		—				—				(9		)		(1,343		)		—				(1,352		)
	Accrual for postretirement medical benefits		(374		)		—				935				345				—				906
	Pension and SERP obligations		83				1				113				(490		)		—				(293		)
	Other assets and liabilities		(183		)		(309		)		(1,616		)		(2,880		)		6,981				1,993
	Distributions received from subsidiaries		42,500				—				—				—				(42,500		)		—
	Net cash provided by (used in) operating activities		23,247				3,085				19,215				13,007				(28,906		)		29,648
	Cash flows from investing activities:
	Additions to property, plant and equipment		38				(35		)		(2,609		)		(444		)		—				(3,050		)
	Change in restricted investments and bond collateral and reclamation deposits		(471,151		)		5,998				4				(395		)		—				(465,544		)
	Receivable from customer for property and equipment purchases		—				—				—				(10		)		—				(10		)
	Other		—				—				—				(60		)		—				(60		)
	Net cash provided by (used in) investing activities		(471,113		)		5,963				(2,605		)		(909		)		—				(468,664		)
	Cash flows from financing activities:
	Change in book overdrafts		—				—				(317		)		2				—				(315		)
	Borrowings from long-term debt		454,219				—				—				—				—				454,219
	Repayments of long-term debt		—				—				(875		)		(5,364		)		—				(6,239		)
	Debt issuance costs and other refinancing costs		(7,598		)		—				—				—				—				(7,598		)
	Dividends/distributions		(261		)		(8,500		)		(18,000		)		(16,000		)		42,500				(261		)
	Transactions with Parent/affiliates		4,939				154				3,434				5,067				(13,594		)		—
	Net cash provided by (used in) financing activities		451,299				(8,346		)		(15,758		)		(16,295		)		28,906				439,806
	Net increase (decrease) in cash and cash equivalents		3,433				702				852				(4,197		)		—				790
	Cash and cash equivalents, beginning of period		25,326				3,341				7,942				24,501				—				61,110
	Cash and cash equivalents, end of period		$	28,759			$	4,043			$	8,794			$	20,304			$	—			$	61,900
	CONSOLIDATING STATEMENTS OF CASH FLOWS
	Three Months Ended March 31, 2013
	(In thousands)
	Statements of Cash Flows		Parent/				Co-Issuer				Guarantor				Non-Guarantor				Consolidating				Total
			Issuer								Subsidiaries				Subsidiaries				Adjustments
	Cash flows from operating activities:
	Net income (loss)		$	(4,087	)		$	(1,004	)		$	6,876			$	1,141			$	(7,013	)		$	(4,087	)
	Adjustments to reconcile net income (loss) to net cash provided by operating activities:
	Equity in income of subsidiaries		(10,304		)		—				—				—				10,304				—
	Depreciation, depletion, and amortization		94				2,531				5,189				6,612				—				14,426
	Accretion of asset retirement obligation and receivable		—				16				1,050				2,114				—				3,180
	Amortization of intangible assets and liabilities, net		—				156				—				8				—				164
	Share-based compensation		682				10				681				1,013				—				2,386
	Gain on sales of assets		—				—				(133		)		(101		)		—				(234		)
	Amortization of deferred financing costs		771				—				13				149				—				933
Loss on sales of investment securities		—				—				7				—				—				7
Changes in operating assets and liabilities:
Receivables, net		49				2,885				(2,467		)		(3,355		)		3,008				120
Inventories		—				(2,181		)		(753		)		247				—				(2,687		)
Excess of black lung benefit obligation over trust assets		83				—				—				—				—				83
Accounts payable and accrued expenses		(8,202		)		5,960				(10		)		6,979				(1,482		)		3,245
Deferred revenue		—				(1,927		)		1,703				384				—				160
Income tax payable		—				—				(1,679		)		1,706				—				27
Accrual for workers’ compensation		(191		)		—				—				—				—				(191		)
Asset retirement obligations		—				—				(190		)		(3,017		)		—				(3,207		)
Accrual for postretirement medical benefits		(100		)		—				1,478				607				—				1,985
Pension and SERP obligations		320				4				177				241				—				742
Other assets and liabilities		(187		)		465				(195		)		4,081				—				4,164
Distributions received from subsidiaries		19,600				—				—				—				(19,600		)		—
Net cash provided by (used in) operating activities		(1,472		)		6,915				11,747				18,809				(14,783		)		21,216
Cash flows from investing activities:
Additions to property, plant and equipment		(157		)		(134		)		(4,224		)		(786		)		—				(5,301		)
Change in restricted investments and bond collateral and reclamation deposits		(398		)		(3		)		(151		)		(5,883		)		—				(6,435		)
Net proceeds from sales of assets		—				—				309				132				—				441
Proceeds from the sale of investments		—				—				120				5,499				—				5,619
Receivable from customer for property and equipment purchases		—				—				—				(49		)		—				(49		)
Net cash provided by (used in) investing activities		(555		)		(137		)		(3,946		)		(1,087		)		—				(5,725		)
Cash flows from financing activities:
Change in book overdrafts		—				—				(7		)		827				—				820
Repayments of long-term debt		—				—				(713		)		(5,860		)		—				(6,573		)
Borrowings on revolving lines of credit		—				—				—				6,000				—				6,000
Repayments on revolving lines of credit		—				—				—				(6,000		)		—				(6,000		)
Debt issuance costs and other refinancing costs		—				—				—				(156		)		—				(156		)
Dividends/distributions		(340		)		(6,500		)		(8,000		)		(5,100		)		19,600				(340		)
Transactions with Parent/affiliates		(22,106		)		(16		)		2,255				4,076				15,791				—
Net cash provided by (used in) financing activities		(22,446		)		(6,516		)		(6,465		)		(6,213		)		35,391				(6,249		)
Net increase (decrease) in cash and cash equivalents		(24,473		)		262				1,336				11,509				20,608				9,242
Cash and cash equivalents, beginning of period		14,836				4,545				5,362				6,867				—				31,610
Cash and cash equivalents, end of period		$	(9,637	)		$	4,807			$	6,698			$	18,376			$	20,608			$	40,852

BASIS_OF_PRESENTATION_Sherritt

BASIS OF PRESENTATION - Sherritt Acquisition (Details) (USD $)	3 Months Ended		0 Months Ended	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 24, 2013	Mar. 31, 2014
			Sherritt International Corporation [Member]	Sherritt International Corporation [Member]
			mines
Business Acquisition [Line Items]	'	'	'	'
Number of Mines	'	'	7	'
Business Acquisition, Percentage of Voting Interests Acquired	'	'	50.00%	'
Business Combination, Consideration Transferred	'	'	$435,000,000	'
Payments to Acquire Businesses, Gross	'	'	293,000,000	'
Business Combination, Consideration Transferred, Liabilities Incurred	'	'	142,000,000	'
Business Combination, Acquisition Related Costs	'	'	'	18,100,000
Loss on foreign exchange	-6,790,000	0	'	6,800,000
Interest Expense, Debt	'	'	'	6,100,000
Interest Expense	20,798,000	10,160,000	'	4,900,000
Other Expenses	'	'	'	$300,000

BASIS_OF_PRESENTATION_Debt_Obl

BASIS OF PRESENTATION - Debt Obligations (Details) (USD $)	3 Months Ended						3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Mar. 31, 2014
			Term Debt [Member]	Term Debt [Member]	Senior secured notes	Senior secured notes	Other operating income	New Notes - 10.75% senior notes due 2018
Debt Instrument [Line Items]	'	'	'	'	'	'	'	'
Debt arrangements	$800,231,000	$339,837,000	$81,000,000	$85,500,000	$251,500,000	$251,500,000	'	'
Business interruption insurance proceeds recorded in income	'	'	'	'	'	'	4,800,000	'
Cash proceeds from business interruption insurance	4,600,000	'	'	'	'	'	'	'
Debt Instrument, Face Amount	'	'	'	'	'	'	'	$425,000,000
Stated interest rate (percent)	'	'	8.02%	'	10.75%	'	'	10.75%

BASIS_OF_PRESENTATION_Restruct

BASIS OF PRESENTATION - Restructuring Charges (Details) (USD $)	3 Months Ended			12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Dec. 31, 2013
			Other Restructuring [Member]	Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]	'	'	'	'
Remaining Period of Contract	'	'	'	'5 years
Beginning balance	'	'	$5,100,000	'
Restructuring charges	397,000	0	400,000	'
Restructuring Payments	'	'	400,000	'
Ending balance	'	'	$5,100,000	$5,100,000

INVENTORIES_Detail

INVENTORIES (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Coal stockpiles	$1,189	$543
Coal fuel inventories	1,844	6,161
Materials and supplies	33,189	34,233
Reserve for obsolete inventory	-775	-965
Total	$35,447	$39,972

RESTRICTED_INVESTMENTS_AND_BON2

RESTRICTED INVESTMENTS AND BOND COLLATERAL - Components of Restricted Investments and Bond Collateral (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Restricted Investments and Bond Collateral [Line Items]	'	'
Total restricted investments and bond collateral	$540,383	$75,233
Less current portion	-16,900	-5,998
Total restricted investments and bond collateral, less current portion	523,483	69,235
Debt Reserve Account | Coal Segment	'	'
Restricted Investments and Bond Collateral [Line Items]	'	'
Total restricted investments and bond collateral	13,068	13,067
Reclamation Bond Collateral | Coal Segment | Kemmerer Mine	'	'
Restricted Investments and Bond Collateral [Line Items]	'	'
Total restricted investments and bond collateral	24,944	24,966
Reclamation Bond Collateral | Coal Segment | Absaloka Mine	'	'
Restricted Investments and Bond Collateral [Line Items]	'	'
Total restricted investments and bond collateral	11,670	11,653
Reclamation Bond Collateral | Coal Segment | Rosebud Mine	'	'
Restricted Investments and Bond Collateral [Line Items]	'	'
Total restricted investments and bond collateral	3,145	3,145
Reclamation Bond Collateral | Coal Segment | Beulah Mine	'	'
Restricted Investments and Bond Collateral [Line Items]	'	'
Total restricted investments and bond collateral	1,270	1,270
Letter of Credit Account | Power Segment	'	'
Restricted Investments and Bond Collateral [Line Items]	'	'
Total restricted investments and bond collateral	0	5,998
Proceeds From New Notes Held In Escrow | Corporate Segment	'	'
Restricted Investments and Bond Collateral [Line Items]	'	'
Total restricted investments and bond collateral	454,219	0
Other Requirements for Sherritt Acquisition Held in Escrow | Corporate Segment	'	'
Restricted Investments and Bond Collateral [Line Items]	'	'
Total restricted investments and bond collateral	16,900	0
Postretirement Medical Benefit Bonds | Corporate Segment	'	'
Restricted Investments and Bond Collateral [Line Items]	'	'
Total restricted investments and bond collateral	8,481	8,467
Workers' Compensation Bonds | Corporate Segment	'	'
Restricted Investments and Bond Collateral [Line Items]	'	'
Total restricted investments and bond collateral	$6,686	$6,667

RESTRICTED_INVESTMENTS_AND_BON3

RESTRICTED INVESTMENTS AND BOND COLLATERAL - Carrying Value and Estimated Fair Value of Restricted Investments and Bond Collateral (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Investment [Line Items]	'	'
Restricted investments and bond collateral	$523,483	$69,235
Carrying Value	'	'
Investment [Line Items]	'	'
Cash and cash equivalents	503,391	'
Time deposits	2,444	'
Held-to-maturity securities	34,548	'
Restricted investments and bond collateral	540,383	'
Fair Value	'	'
Investment [Line Items]	'	'
Cash and cash equivalents	503,391	'
Time deposits	2,444	'
Held-to-maturity securities	34,707	'
Restricted investments and bond collateral	$540,542	'

RESTRICTED_INVESTMENTS_AND_BON4

RESTRICTED INVESTMENTS AND BOND COLLATERAL - Amortized Cost, Gross Unrealized Holding Gains and Losses and Fair Value of Held-to-Maturity Securities (Detail) (Held-to-maturity securities, USD $)	Mar. 31, 2014
In Thousands, unless otherwise specified
Held-to-maturity securities	'
Schedule of Held-to-maturity Securities [Line Items]	'
Amortized cost	$34,548
Gross unrealized holding gains	440
Gross unrealized holding losses	-281
Fair value	$34,707

RESTRICTED_INVESTMENTS_AND_BON5

RESTRICTED INVESTMENTS AND BOND COLLATERAL - Maturities of Held-to-Maturity Securities (Detail) (Held-to-maturity securities, USD $)	Mar. 31, 2014
In Thousands, unless otherwise specified
Held-to-maturity securities	'
Schedule of Held-to-maturity Securities [Line Items]	'
Within one year, Amortized cost	$1,193
Due in five years or less, Amortized cost	19,539
Due after five years to ten years, Amortized cost	6,718
Due in more than ten years, Amortized cost	7,098
Maturities of held-to-maturity securities, Amortized cost	34,548
Within one year, Fair Value	1,217
Due in five years or less, Fair Value	19,752
Due after five years to ten years, Fair Value	6,717
Due in more than ten years, Fair Value	7,021
Fair value	$34,707

LINES_OF_CREDIT_AND_LONGTERM_D2

LINES OF CREDIT AND LONG-TERM DEBT - Outstanding Lines of Credit and Long-Term Debt (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'
Total debt outstanding	$800,231	$339,837
Less current portion	-48,586	-44,343
Total debt outstanding, less current portion	751,645	295,494
10.75% Senior Notes	'	'
Debt Instrument [Line Items]	'	'
Total debt outstanding	251,500	251,500
New Notes - 10.75% senior notes due 2018	'	'
Debt Instrument [Line Items]	'	'
Total debt outstanding	425,000	0
WML Term Debt due 2018	'	'
Debt Instrument [Line Items]	'	'
Total debt outstanding	81,000	85,500
Capital Lease Obligations	'	'
Debt Instrument [Line Items]	'	'
Total debt outstanding	21,465	10,153
Other	'	'
Debt Instrument [Line Items]	'	'
Total debt outstanding	1,093	1,209
Debt premium (discount), net	'	'
Debt Instrument [Line Items]	'	'
Total debt outstanding	$20,173	($8,525)

LINES_OF_CREDIT_AND_LONGTERM_D3

LINES OF CREDIT AND LONG-TERM DEBT - Contractual Maturities of Long Term Debt (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'
2014	$19,569	'
2015	24,710	'
2016	24,055	'
2017	24,664	'
2018	684,556	'
Thereafter	2,504	'
Total	780,058	'
Less: debt premium (discount), net	20,173	'
Total debt outstanding	$800,231	$339,837

LINES_OF_CREDIT_AND_LONGTERM_D4

LINES OF CREDIT AND LONG-TERM DEBT - Additional Information (Detail) (USD $)	Mar. 31, 2014	Feb. 07, 2014	Mar. 31, 2014	Mar. 31, 2014	Dec. 24, 2013	Mar. 31, 2014	Mar. 31, 2014
In Millions, unless otherwise specified	10.75% Senior Notes	Senior Notes Due 2018	Senior Notes Due 2018	Term Debt [Member]	Sherritt International Corporation [Member]	Subsequent Event	Kemmerer Mine
						Add-On Notes
Debt Instrument [Line Items]	'	'	'	'	'	'	'
Debt Instrument, Face Amount	'	$425	'	'	'	$425	'
Debt Instrument Price As Percentage Of Face Value	'	106.88%	'	'	'	'	'
Proceeds from Issuance of Debt	'	454.2	'	'	'	'	'
Debt Instrument, Unamortized Premium	'	29.2	'	'	'	'	'
Stated interest rate (percent)	10.75%	10.75%	10.75%	8.02%	'	10.75%	'
Debt issuance costs capitalized	'	'	7.6	'	'	'	'
Payments to Acquire Businesses, Gross	'	'	'	'	293	'	'
Cash Bonding Obligations Financed By Net Proceeds Of Debt Issued	'	58	'	'	'	'	'
Payments for Debt Issuance and Business Acquisition Transaction Costs	'	26	'	'	'	'	'
Debt Instrument, Redemption Price, Percentage	'	'	101.00%	'	'	'	'
Capital Lease Obligations	'	'	'	'	'	'	$12.90

POSTRETIREMENT_MEDICAL_BENEFIT2

POSTRETIREMENT MEDICAL BENEFITS AND PENSION - Postretirement Medicial Benefit Obligations Balance Sheet Disclosures (Details) (Postretirement Medical Benefits, USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Postretirement Medical Benefits	'	'
Components of net periodic benefit cost:	'	'
Service cost	$822	$1,109
Interest cost	3,203	3,035
Amortization of deferred items	5	1,001
Total net periodic benefit cost	$4,030	$5,145

POSTRETIREMENT_MEDICAL_BENEFIT3

POSTRETIREMENT MEDICAL BENEFITS AND PENSION - Postretirement Medical Benefit Obligations Income Statement Disclosures (Details) (Postretirement Medical Benefits, USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Net periodic postretirement medical benefit costs relating to current and former mining operations:	'	'
Total net periodic benefit cost	$4,030	$5,145
Former Mining Operations	'	'
Net periodic postretirement medical benefit costs relating to current and former mining operations:	'	'
Total net periodic benefit cost	2,403	3,119
Current Operations	'	'
Net periodic postretirement medical benefit costs relating to current and former mining operations:	'	'
Total net periodic benefit cost	$1,627	$2,026

POSTRETIREMENT_MEDICAL_BENEFIT4

POSTRETIREMENT MEDICAL BENEFITS AND PENSION - Pension Benefit Disclosures (Details) (Pension, USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Pension	'	'
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]	'	'
Service cost	$500,000	$534,000
Interest cost	1,747,000	1,625,000
Expected return on plan assets	-2,154,000	-2,060,000
Amortization of deferred items	359,000	741,000
Total net periodic benefit cost	452,000	840,000
Cash contributions during the period	600,000	'
Expected contributions during the remainder of 2014	$3,700,000	'

HERITAGE_HEALTH_BENEFIT_EXPENS2

HERITAGE HEALTH BENEFIT EXPENSES - Components of Costs of Benefits to Former Mining Operation Employees (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Heritage Health Benefit Expenses [Abstract]	'	'
Health care benefits	$2,276	$3,176
Combined benefit fund payments	512	576
Workers' compensation benefits	136	116
Black lung benefits (credit)	620	83
Total	$3,544	$3,951

ASSET_RETIREMENT_OBLIGATIONS_C2

ASSET RETIREMENT OBLIGATIONS, CONTRACTUAL THIRD-PARTY RECLAMATION RECEIVABLES, AND RECLAMATION DEPOSITS - Summary of Asset Retirement Obligations, Contractual Third-Party Reclamation Receivables, and Reclamation Deposits (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Asset Retirement Obligation [Line Items]	'	'	'	'
Asset Retirement Obligation	$281,263	$279,864	$263,489	$263,847
Contractual Third- Party Reclamation Receivable	96,249	'	'	'
Reclamation deposits	75,315	74,921	'	'
Rosebud Mine	'	'	'	'
Asset Retirement Obligation [Line Items]	'	'	'	'
Asset Retirement Obligation	127,989	'	'	'
Contractual Third- Party Reclamation Receivable	21,656	'	'	'
Reclamation deposits	75,315	'	'	'
Jewett Mine	'	'	'	'
Asset Retirement Obligation [Line Items]	'	'	'	'
Asset Retirement Obligation	74,247	'	'	'
Contractual Third- Party Reclamation Receivable	74,247	'	'	'
Reclamation deposits	0	'	'	'
Absaloka Mine	'	'	'	'
Asset Retirement Obligation [Line Items]	'	'	'	'
Asset Retirement Obligation	37,286	'	'	'
Contractual Third- Party Reclamation Receivable	346	'	'	'
Reclamation deposits	0	'	'	'
Beulah Mine	'	'	'	'
Asset Retirement Obligation [Line Items]	'	'	'	'
Asset Retirement Obligation	17,764	'	'	'
Contractual Third- Party Reclamation Receivable	0	'	'	'
Reclamation deposits	0	'	'	'
Kemmerer Mine	'	'	'	'
Asset Retirement Obligation [Line Items]	'	'	'	'
Asset Retirement Obligation	17,569	'	'	'
Contractual Third- Party Reclamation Receivable	0	'	'	'
Reclamation deposits	0	'	'	'
Savage	'	'	'	'
Asset Retirement Obligation [Line Items]	'	'	'	'
Asset Retirement Obligation	5,499	'	'	'
Contractual Third- Party Reclamation Receivable	0	'	'	'
Reclamation deposits	0	'	'	'
ROVA	'	'	'	'
Asset Retirement Obligation [Line Items]	'	'	'	'
Asset Retirement Obligation	909	'	'	'
Contractual Third- Party Reclamation Receivable	0	'	'	'
Reclamation deposits	$0	'	'	'

ASSET_RETIREMENT_OBLIGATIONS_C3

ASSET RETIREMENT OBLIGATIONS, CONTRACTUAL THIRD-PARTY RECLAMATION RECEIVABLES, AND RECLAMATION DEPOSITS - Changes in Company's Asset Retirement Obligations (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Asset Retirement Obligation Disclosure [Abstract]	'	'	'
Asset retirement obligations, beginning of period (including current portion)	$279,864	$263,847	'
Accretion	5,836	5,481	'
Liabilities settled	-4,437	-5,839	'
Asset retirement obligations, end of period	281,263	263,489	'
Less current portion	-22,227	-23,154	-23,353
Asset retirement obligations, less current portion	$259,036	$240,335	$256,511

ASSET_RETIREMENT_OBLIGATIONS_C4

ASSET RETIREMENT OBLIGATIONS, CONTRACTUAL THIRD-PARTY RECLAMATION RECEIVABLES, AND RECLAMATION DEPOSITS - Carrying Value and Estimated Fair Value of Reclamation Deposits (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Asset Retirement Obligation [Line Items]	'	'
Reclamation deposits	$75,315	$74,921
Carrying Value	'	'
Asset Retirement Obligation [Line Items]	'	'
Reclamation deposits	75,315	'
Carrying Value | Cash and cash equivalents | Level 1	'	'
Asset Retirement Obligation [Line Items]	'	'
Reclamation deposits	49,627	'
Carrying Value | Held-to-maturity securities | Level 2	'	'
Asset Retirement Obligation [Line Items]	'	'
Reclamation deposits	25,688	'
Fair Value	'	'
Asset Retirement Obligation [Line Items]	'	'
Reclamation deposits	76,028	'
Fair Value | Cash and cash equivalents | Level 1	'	'
Asset Retirement Obligation [Line Items]	'	'
Reclamation deposits	49,627	'
Fair Value | Held-to-maturity securities | Level 2	'	'
Asset Retirement Obligation [Line Items]	'	'
Reclamation deposits	$26,401	'

ASSET_RETIREMENT_OBLIGATIONS_C5

ASSET RETIREMENT OBLIGATIONS, CONTRACTUAL THIRD-PARTY RECLAMATION RECEIVABLES, AND RECLAMATION DEPOSITS - Amortized Cost, Gross Unrealized Holding Gains and Losses and Fair Value of Held-to-Maturity Securities (Detail) (Reclamation Deposits [Member], USD $)	Mar. 31, 2014
In Thousands, unless otherwise specified
Reclamation Deposits [Member]	'
Schedule of Held-to-maturity Securities [Line Items]	'
Amortized cost	$25,688
Gross unrealized holding gains	826
Gross unrealized holding losses	-113
Fair value	$26,401

ASSET_RETIREMENT_OBLIGATIONS_C6

ASSET RETIREMENT OBLIGATIONS, CONTRACTUAL THIRD-PARTY RECLAMATION RECEIVABLES, AND RECLAMATION DEPOSITS - Maturities of Held-to-Maturity Securities (Detail) (Reclamation Deposits [Member], USD $)	Mar. 31, 2014
In Thousands, unless otherwise specified
Reclamation Deposits [Member]	'
Schedule of Held-to-maturity Securities [Line Items]	'
Within one year, Amortized cost	$479
Due in five years or less, Amortized cost	17,562
Due after five years to ten years, Amortized cost	4,869
Due in more than ten years, Amortized cost	2,778
Maturities of held-to-maturity securities, Amortized cost	25,688
Within one year, Fair Value	468
Due in five years or less, Fair Value	17,880
Due after five years to ten years, Fair Value	5,023
Due in more than ten years, Fair Value	3,030
Fair value	$26,401

DERIVATIVE_INSTRUMENTS_Details

DERIVATIVE INSTRUMENTS (Details) (Not Designated as Hedging Instrument [Member], Foreign Exchange Forward [Member], USD $)	3 Months Ended
	Mar. 31, 2014
Derivative [Line Items]	'
Derivative, Number of Instruments Held	2
Derivative, Notional Amount	$348,300,000
Foreign Currency Gain (Loss) [Member]	'
Derivative [Line Items]	'
Derivative, Gain (Loss) on Derivative, Net	-6,790,000
Other Current Assets [Member]	'
Derivative [Line Items]	'
Derivative Asset	246,000
Other Current Liabilities [Member]	'
Derivative [Line Items]	'
Derivative Liability	($7,036,000)

FAIR_VALUE_MEASUREMENTS_Detail

FAIR VALUE MEASUREMENTS (Details) (Significant unobservable inputs, Level 3, USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Carrying Value	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Debt	$777,670	$328,473
Fair Value	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Debt	$823,603	$364,329

SHAREHOLDERS_EQUITY_AND_ACCUMU2

SHAREHOLDERS' EQUITY AND ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Changes in Accumulated Other Comprehensive Income by component (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Balance at beginning of period	($63,595)
Other comprehensive income before reclassifications	-138
Amounts reclassified from accumulated other comprehensive income (loss)	364
Balance at end of period	-63,369
Defined benefit plans adjustment | Pension	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Balance at beginning of period	-12,255
Amounts reclassified from accumulated other comprehensive income (loss)	359
Balance at end of period	-11,896
Defined benefit plans adjustment | Postretirement Medical Benefits	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Balance at beginning of period	-20,292
Amounts reclassified from accumulated other comprehensive income (loss)	5
Balance at end of period	-20,287
Tax effect of other comprehensive income gains	'
Accumulated Other Comprehensive Income (Loss) [Line Items]	'
Balance at beginning of period	-31,048
Other comprehensive income before reclassifications	-138
Balance at end of period	($31,186)

SHAREHOLDERS_EQUITY_AND_ACCUMU3

SHAREHOLDERS' EQUITY AND ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Reclassifications out of Accumulated Other Comprehensive Income (Details) (Defined benefit plans adjustment, USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014
Pension	'
Reclassification out of Accumulated Other Comprehensive Income [Line Items]	'
Actuarial losses	$359	[1],[2]
Postretirement Medical Benefits	'
Reclassification out of Accumulated Other Comprehensive Income [Line Items]	'
Prior service costs	-159	[1],[3]
Actuarial losses	164	[1],[3]
Amortization of defined benefit pension and postretirement medical benefits	$5	[1]
[1]	Amounts in parentheses indicate debits to income/loss.
[2]	These accumulated other comprehensive loss components are included in the computation of net periodic pension cost. (See Note 5 - Pension for additional details)
[3]	These accumulated other comprehensive loss components are included in the computation of net periodic postretirement medical cost. (See Note 5 - Postretirement Medical Benefits for additional details)

SHAREHOLDERS_EQUITY_AND_ACCUMU4

SHAREHOLDERS' EQUITY AND ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) - Additional Information (Detail) (USD $)	3 Months Ended				1 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2014	Apr. 23, 2014	Apr. 23, 2014
			Preferred Stock [Member]	Common Stock [Member]	Subsequent Event	Subsequent Event
					Preferred Stock [Member]	Common Stock [Member]
Class of Stock [Line Items]	'	'	'	'	'	'
Cumulative dividends paid on Series A Convertible Exchangeable Preferred Stock (in USD per share)	'	'	$2.13	'	'	'
Preferred dividends paid	$261	$340	'	'	'	'
Conversion of Stock, Shares Converted	'	'	38,737	'	7,830	'
Conversion of convertible notes and securities, shares	'	'	'	264,641	'	53,486

SHAREBASED_COMPENSATION_Compen

SHARE-BASED COMPENSATION - Compensation Expense from Share-Based Arrangements (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'	'
Recognition of fair value of restricted stock units, stock options, and SARs over vesting period; and issuance of common stock	$728	$1,663
Contributions of stock to the Company's 401(k) plan	0	723
Total share-based compensation expense	$728	$2,386

SHAREBASED_COMPENSATION_Summar

SHARE-BASED COMPENSATION - Summary of Restricted Stock Unit Activity (Detail) (Restricted Stock Units (RSUs), USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014
Restricted Stock Units (RSUs)	'
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]	'
Balance beginning of period (units)	588,727
Granted (units)	0
Vested (units)	0
Balance end of period (units)	588,727
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]	'
Weighted Average Grant Date Fair Value, beginning of period (in USD per share)	$9.37
Weighted Average Grant Date Fair Value, Awards granted (in USD per share)	$0
Weighted Average Grant Date Fair Value, Awards vested (in USD per share)	$0
Weighted Average Grant Date Fair Value, end of period (in USD per share)	$9.37
Unamortized Compensation Expense	$1,618	[1]
[1]	Expected to be recognized over the next three years.

SHAREBASED_COMPENSATION_Summar1

SHARE-BASED COMPENSATION - Summary of Stock Options and SARs (Details) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014
Stock Appreciation Rights (SARs)	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Balance, beginning of period, shares	70,734
Exercised, shares	-25,667
Expired, shares	0
Balance, end of period, shares	45,067
Balance, beginning of period, weighted average exercise price	$22.60
Exercised, weighted average exercise price	$0
Expired, weighted average exercise price	$0
Balance, end of period, weighted average exercise price	$23.95
Outstanding - Weighted Average Remaining Contractual Life (In years)	'1 year 10 months 24 days
Exercisable - Weighted Average Remaining Contractual Life (In years)	'1 year 10 months 24 days
Aggregate Intrinsic Value	$352
Unamortized Compensation Expense	0
Granted, shares	0
Stock Options	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Balance, beginning of period, shares	145,806
Exercised, shares	0
Expired, shares	0
Balance, end of period, shares	145,806
Balance, beginning of period, weighted average exercise price	$21.97
Exercised, weighted average exercise price	$0
Expired, weighted average exercise price	$0
Balance, end of period, weighted average exercise price	$21.97
Outstanding - Weighted Average Remaining Contractual Life (In years)	'4 years
Exercisable - Weighted Average Remaining Contractual Life (In years)	'4 years
Aggregate Intrinsic Value	1,139
Unamortized Compensation Expense	$0
Granted, shares	0

SHAREBASED_COMPENSATION_Narrat

SHARE-BASED COMPENSATION - Narrative (Details) (Restricted Stock Units (RSUs))	3 Months Ended
	Mar. 31, 2014
Restricted Stock Units (RSUs)	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Period for recognition of unamortized compensation expense	'3 years

EARNINGS_PER_SHARE_Antidilutiv

EARNINGS PER SHARE - Antidilutive securities excluded from the computation of earnings per share (Details)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Class of Stock [Line Items]	'	'
Shares excluded from diluted shares calculation	1,607	2,071
Convertible securities	'	'
Class of Stock [Line Items]	'	'
Shares excluded from diluted shares calculation	828	1,093
Restricted stock units, stock options and SARs	'	'
Class of Stock [Line Items]	'	'
Shares excluded from diluted shares calculation	779	978

BUSINESS_SEGMENT_INFORMATION_S

BUSINESS SEGMENT INFORMATION - Summarized Financial Information by Segment (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
	segments
Segment Reporting Information [Line Items]	'	'	'
Number of Reportable Segments	4	'	'
Revenues	$180,202	$161,448	'
Restructuring charges	397	0	'
Operating income (loss)	8,053	5,734	'
Depreciation, depletion and amortization	16,059	14,426	'
Total assets	1,407,147	943,015	946,685
Capital expenditures	3,050	5,301	'
Coal Segment	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Revenues	158,190	142,112	'
Restructuring charges	0	'	'
Operating income (loss)	13,447	13,472	'
Depreciation, depletion and amortization	13,459	11,801	'
Total assets	697,916	711,128	'
Capital expenditures	3,053	5,010	'
Power Segment	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Revenues	22,012	19,336	'
Restructuring charges	397	'	'
Operating income (loss)	1,744	-1,003	'
Depreciation, depletion and amortization	2,524	2,531	'
Total assets	167,998	186,309	'
Capital expenditures	35	134	'
Heritage Segment	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Revenues	0	0	'
Restructuring charges	0	'	'
Operating income (loss)	-3,830	-4,175	'
Depreciation, depletion and amortization	0	0	'
Total assets	15,622	15,877	'
Capital expenditures	0	0	'
Corporate Segment	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Revenues	0	0	'
Restructuring charges	0	'	'
Operating income (loss)	-3,308	-2,560	'
Depreciation, depletion and amortization	76	94	'
Total assets	525,611	29,701	'
Capital expenditures	($38)	$157	'

BUSINESS_SEGMENT_INFORMATION_R

BUSINESS SEGMENT INFORMATION - Reconciliation of Segment Operating Income to Income (Loss) (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting [Abstract]	'	'
Income (loss) from operations	$8,053	$5,734
Interest expense	-20,798	-10,160
Interest income	302	297
Loss on foreign exchange	-6,790	0
Other income	93	70
Loss before income taxes	($19,140)	($4,059)

SUPPLEMENTAL_CONSOLIDATING_FIN2

SUPPLEMENTAL CONSOLIDATING FINANCIAL INFORMATION - Supplemental Consolidating Balance Sheet Information (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:	'	'	'	'
Cash and cash equivalents	$61,900	$61,110	$40,852	$31,610
Receivables:	'	'	'	'
Trade	64,715	66,196	'	'
Contractual third-party reclamation receivables	8,213	8,487	'	'
Intercompany receivable/payable	0	0	'	'
Other	1,375	5,086	'	'
Total receivables	74,303	79,769	'	'
Inventories	35,447	39,972	'	'
Deferred income taxes	'	0	'	'
Restricted investments and bond collateral	16,900	5,998	'	'
Other current assets	16,643	18,190	'	'
Total current assets	205,193	205,039	'	'
Property, plant and equipment:	'	'	'	'
Land and mineral rights	278,198	278,188	'	'
Plant and equipment	673,189	657,696	'	'
Gross property, plant and equipment	951,387	935,884	'	'
Less accumulated depreciation, depletion and amortization	461,754	445,848	'	'
Net property, plant and equipment	489,633	490,036	'	'
Advanced coal royalties	7,263	7,311	'	'
Reclamation deposits	75,315	74,921	'	'
Total restricted investments and bond collateral, less current portion	523,483	69,235	'	'
Contractual third-party reclamation receivables	88,036	88,303	'	'
Intangible assets	1,099	1,520	'	'
Investment in subsidiaries	0	0	'	'
Other assets	17,125	10,320	'	'
Total Assets	1,407,147	946,685	943,015	'
Current liabilities	'	'	'	'
Current installments of long-term debt	48,586	44,343	'	'
Accounts payable and accrued expenses:	'	'	'	'
Trade	62,598	57,507	'	'
Production taxes	46,794	41,905	'	'
Workers' compensation	712	717	'	'
Postretirement medical benefits	13,955	13,955	'	'
SERP	390	390	'	'
Deferred revenue	16,034	14,068	'	'
Asset retirement obligations	22,227	23,353	23,154	'
Other current liabilities	24,390	16,790	'	'
Total current liabilities	235,686	213,028	'	'
Long-term debt, less current installments	751,645	295,494	'	'
Workers' compensation, less current portion	6,680	6,744	'	'
Excess of black lung benefit obligation over trust assets	9,376	8,675	'	'
Postretirement medical benefits, less current portion	271,275	270,374	'	'
Pension and SERP obligations, less current portion	23,524	24,176	'	'
Deferred revenue, less current portion	43,299	46,567	'	'
Asset retirement obligations, less current portion	259,036	256,511	240,335	'
Intangible liabilities	5,339	5,606	'	'
Other liabilities	7,503	7,389	'	'
Intercompany receivable/payable	0	0	'	'
Total liabilities	1,613,363	1,134,564	'	'
Shareholders' deficit:	'	'	'	'
Preferred stock	121	160	'	'
Common stock	37,155	36,479	'	'
Other paid-in capital	134,952	134,861	'	'
Accumulated other comprehensive loss	-63,369	-63,595	'	'
Accumulated earnings (deficit)	-315,075	-295,784	'	'
Total equity (deficit)	-206,216	-187,879	'	'
Total Liabilities and Shareholders' Deficit	1,407,147	946,685	'	'
Parent/ Issuer	'	'	'	'
Current assets:	'	'	'	'
Cash and cash equivalents	28,759	25,326	-9,637	14,836
Receivables:	'	'	'	'
Trade	0	0	'	'
Contractual third-party reclamation receivables	0	0	'	'
Intercompany receivable/payable	-2,263	-3,568	'	'
Other	273	95	'	'
Total receivables	-1,990	-3,473	'	'
Inventories	0	0	'	'
Deferred income taxes	'	0	'	'
Restricted investments and bond collateral	16,900	0	'	'
Other current assets	7,044	6,115	'	'
Total current assets	50,713	27,968	'	'
Property, plant and equipment:	'	'	'	'
Land and mineral rights	0	0	'	'
Plant and equipment	3,966	3,939	'	'
Gross property, plant and equipment	3,966	3,939	'	'
Less accumulated depreciation, depletion and amortization	2,781	2,705	'	'
Net property, plant and equipment	1,185	1,234	'	'
Advanced coal royalties	0	0	'	'
Reclamation deposits	0	0	'	'
Total restricted investments and bond collateral, less current portion	469,385	15,134	'	'
Contractual third-party reclamation receivables	0	0	'	'
Intangible assets	0	0	'	'
Investment in subsidiaries	237,926	266,847	'	'
Other assets	15,563	8,636	'	'
Total Assets	774,772	319,819	'	'
Current liabilities	'	'	'	'
Current installments of long-term debt	22,785	20,392	'	'
Accounts payable and accrued expenses:	'	'	'	'
Trade	9,000	4,122	'	'
Production taxes	0	0	'	'
Workers' compensation	712	717	'	'
Postretirement medical benefits	12,042	12,042	'	'
SERP	390	390	'	'
Deferred revenue	0	0	'	'
Asset retirement obligations	0	0	'	'
Other current liabilities	19,196	11,302	'	'
Total current liabilities	64,125	48,965	'	'
Long-term debt, less current installments	677,385	224,582	'	'
Workers' compensation, less current portion	6,680	6,744	'	'
Excess of black lung benefit obligation over trust assets	9,376	8,675	'	'
Postretirement medical benefits, less current portion	185,447	185,858	'	'
Pension and SERP obligations, less current portion	12,921	13,069	'	'
Deferred revenue, less current portion	0	0	'	'
Asset retirement obligations, less current portion	0	0	'	'
Intangible liabilities	0	0	'	'
Other liabilities	6,440	5,939	'	'
Intercompany receivable/payable	18,613	13,866	'	'
Total liabilities	980,987	507,698	'	'
Shareholders' deficit:	'	'	'	'
Preferred stock	121	160	'	'
Common stock	37,155	36,479	'	'
Other paid-in capital	134,953	134,861	'	'
Accumulated other comprehensive loss	-63,369	-63,595	'	'
Accumulated earnings (deficit)	-315,075	-295,784	'	'
Total equity (deficit)	-206,215	-187,879	'	'
Total Liabilities and Shareholders' Deficit	774,772	319,819	'	'
Co-Issuer	'	'	'	'
Current assets:	'	'	'	'
Cash and cash equivalents	4,043	3,341	4,807	4,545
Receivables:	'	'	'	'
Trade	12,456	12,934	'	'
Contractual third-party reclamation receivables	0	0	'	'
Intercompany receivable/payable	0	0	'	'
Other	208	210	'	'
Total receivables	12,664	13,144	'	'
Inventories	1,845	6,161	'	'
Deferred income taxes	'	0	'	'
Restricted investments and bond collateral	0	5,998	'	'
Other current assets	425	143	'	'
Total current assets	18,977	28,787	'	'
Property, plant and equipment:	'	'	'	'
Land and mineral rights	1,395	1,395	'	'
Plant and equipment	220,932	220,872	'	'
Gross property, plant and equipment	222,327	222,267	'	'
Less accumulated depreciation, depletion and amortization	74,177	71,653	'	'
Net property, plant and equipment	148,150	150,614	'	'
Advanced coal royalties	0	0	'	'
Reclamation deposits	0	0	'	'
Total restricted investments and bond collateral, less current portion	0	0	'	'
Contractual third-party reclamation receivables	0	0	'	'
Intangible assets	871	1,283	'	'
Investment in subsidiaries	0	0	'	'
Other assets	0	0	'	'
Total Assets	167,998	180,684	'	'
Current liabilities	'	'	'	'
Current installments of long-term debt	0	0	'	'
Accounts payable and accrued expenses:	'	'	'	'
Trade	6,331	10,119	'	'
Production taxes	405	3	'	'
Workers' compensation	0	0	'	'
Postretirement medical benefits	0	0	'	'
SERP	0	0	'	'
Deferred revenue	9,581	9,024	'	'
Asset retirement obligations	0	0	'	'
Other current liabilities	5,053	5,053	'	'
Total current liabilities	21,370	24,199	'	'
Long-term debt, less current installments	0	0	'	'
Workers' compensation, less current portion	0	0	'	'
Excess of black lung benefit obligation over trust assets	0	0	'	'
Postretirement medical benefits, less current portion	0	0	'	'
Pension and SERP obligations, less current portion	98	99	'	'
Deferred revenue, less current portion	38,325	41,297	'	'
Asset retirement obligations, less current portion	909	892	'	'
Intangible liabilities	5,339	5,606	'	'
Other liabilities	0	0	'	'
Intercompany receivable/payable	0	0	'	'
Total liabilities	66,041	72,093	'	'
Shareholders' deficit:	'	'	'	'
Preferred stock	0	0	'	'
Common stock	5	5	'	'
Other paid-in capital	52,842	52,835	'	'
Accumulated other comprehensive loss	-162	-164	'	'
Accumulated earnings (deficit)	49,272	55,915	'	'
Total equity (deficit)	101,957	108,591	'	'
Total Liabilities and Shareholders' Deficit	167,998	180,684	'	'
Guarantor Subsidiaries	'	'	'	'
Current assets:	'	'	'	'
Cash and cash equivalents	8,794	7,942	6,698	5,362
Receivables:	'	'	'	'
Trade	22,857	17,389	'	'
Contractual third-party reclamation receivables	44	44	'	'
Intercompany receivable/payable	3,499	4,384	'	'
Other	244	2,974	'	'
Total receivables	26,644	24,791	'	'
Inventories	15,133	16,077	'	'
Deferred income taxes	'	870	'	'
Restricted investments and bond collateral	0	0	'	'
Other current assets	3,168	6,883	'	'
Total current assets	53,739	56,563	'	'
Property, plant and equipment:	'	'	'	'
Land and mineral rights	104,640	104,631	'	'
Plant and equipment	245,368	229,998	'	'
Gross property, plant and equipment	350,008	334,629	'	'
Less accumulated depreciation, depletion and amortization	138,718	132,189	'	'
Net property, plant and equipment	211,290	202,440	'	'
Advanced coal royalties	3,000	3,000	'	'
Reclamation deposits	0	0	'	'
Total restricted investments and bond collateral, less current portion	36,615	36,619	'	'
Contractual third-party reclamation receivables	302	293	'	'
Intangible assets	0	0	'	'
Investment in subsidiaries	0	0	'	'
Other assets	569	586	'	'
Total Assets	305,515	299,501	'	'
Current liabilities	'	'	'	'
Current installments of long-term debt	4,596	2,790	'	'
Accounts payable and accrued expenses:	'	'	'	'
Trade	14,710	12,522	'	'
Production taxes	22,442	17,429	'	'
Workers' compensation	0	0	'	'
Postretirement medical benefits	329	329	'	'
SERP	0	0	'	'
Deferred revenue	4,813	3,969	'	'
Asset retirement obligations	3,554	3,104	'	'
Other current liabilities	0	317	'	'
Total current liabilities	50,444	40,460	'	'
Long-term debt, less current installments	12,912	2,664	'	'
Workers' compensation, less current portion	0	0	'	'
Excess of black lung benefit obligation over trust assets	0	0	'	'
Postretirement medical benefits, less current portion	50,472	49,418	'	'
Pension and SERP obligations, less current portion	9,494	9,381	'	'
Deferred revenue, less current portion	0	0	'	'
Asset retirement obligations, less current portion	51,300	50,472	'	'
Intangible liabilities	0	0	'	'
Other liabilities	0	6,220	'	'
Intercompany receivable/payable	-4,326	525	'	'
Total liabilities	170,296	159,140	'	'
Shareholders' deficit:	'	'	'	'
Preferred stock	0	0	'	'
Common stock	110	110	'	'
Other paid-in capital	92,896	94,370	'	'
Accumulated other comprehensive loss	17,372	17,492	'	'
Accumulated earnings (deficit)	24,841	28,389	'	'
Total equity (deficit)	135,219	140,361	'	'
Total Liabilities and Shareholders' Deficit	305,515	299,501	'	'
Non-Guarantor Subsidiaries	'	'	'	'
Current assets:	'	'	'	'
Cash and cash equivalents	20,304	24,501	18,376	6,867
Receivables:	'	'	'	'
Trade	29,402	35,873	'	'
Contractual third-party reclamation receivables	8,169	8,443	'	'
Intercompany receivable/payable	-33,946	-33,681	'	'
Other	681	1,831	'	'
Total receivables	4,306	12,466	'	'
Inventories	18,469	17,735	'	'
Deferred income taxes	'	0	'	'
Restricted investments and bond collateral	0	0	'	'
Other current assets	6,005	5,049	'	'
Total current assets	49,084	59,751	'	'
Property, plant and equipment:	'	'	'	'
Land and mineral rights	172,163	172,163	'	'
Plant and equipment	202,923	202,886	'	'
Gross property, plant and equipment	375,086	375,049	'	'
Less accumulated depreciation, depletion and amortization	246,079	239,302	'	'
Net property, plant and equipment	129,007	135,747	'	'
Advanced coal royalties	4,263	4,311	'	'
Reclamation deposits	75,315	74,921	'	'
Total restricted investments and bond collateral, less current portion	17,483	17,482	'	'
Contractual third-party reclamation receivables	87,734	88,010	'	'
Intangible assets	228	238	'	'
Investment in subsidiaries	3,770	3,770	'	'
Other assets	4,493	3,098	'	'
Total Assets	371,377	387,328	'	'
Current liabilities	'	'	'	'
Current installments of long-term debt	21,205	21,161	'	'
Accounts payable and accrued expenses:	'	'	'	'
Trade	32,557	30,743	'	'
Production taxes	23,947	24,472	'	'
Workers' compensation	0	0	'	'
Postretirement medical benefits	1,583	1,583	'	'
SERP	0	0	'	'
Deferred revenue	1,640	1,075	'	'
Asset retirement obligations	18,673	20,250	'	'
Other current liabilities	172	142	'	'
Total current liabilities	99,777	99,426	'	'
Long-term debt, less current installments	64,848	70,248	'	'
Workers' compensation, less current portion	0	0	'	'
Excess of black lung benefit obligation over trust assets	0	0	'	'
Postretirement medical benefits, less current portion	35,356	35,098	'	'
Pension and SERP obligations, less current portion	1,011	1,627	'	'
Deferred revenue, less current portion	4,974	5,271	'	'
Asset retirement obligations, less current portion	206,827	205,147	'	'
Intangible liabilities	0	0	'	'
Other liabilities	1,063	1,450	'	'
Intercompany receivable/payable	5,633	6,434	'	'
Total liabilities	419,489	424,701	'	'
Shareholders' deficit:	'	'	'	'
Preferred stock	0	0	'	'
Common stock	132	132	'	'
Other paid-in capital	66,027	64,401	'	'
Accumulated other comprehensive loss	-13,937	-14,153	'	'
Accumulated earnings (deficit)	-100,334	-87,753	'	'
Total equity (deficit)	-48,112	-37,373	'	'
Total Liabilities and Shareholders' Deficit	371,377	387,328	'	'
Consolidating Adjustments	'	'	'	'
Current assets:	'	'	'	'
Cash and cash equivalents	0	0	20,608	0
Receivables:	'	'	'	'
Trade	0	0	'	'
Contractual third-party reclamation receivables	0	0	'	'
Intercompany receivable/payable	32,710	32,865	'	'
Other	-31	-24	'	'
Total receivables	32,679	32,841	'	'
Inventories	0	-1	'	'
Deferred income taxes	'	-870	'	'
Restricted investments and bond collateral	0	0	'	'
Other current assets	1	0	'	'
Total current assets	32,680	31,970	'	'
Property, plant and equipment:	'	'	'	'
Land and mineral rights	0	-1	'	'
Plant and equipment	0	1	'	'
Gross property, plant and equipment	0	0	'	'
Less accumulated depreciation, depletion and amortization	-1	-1	'	'
Net property, plant and equipment	1	1	'	'
Advanced coal royalties	0	0	'	'
Reclamation deposits	0	0	'	'
Total restricted investments and bond collateral, less current portion	0	0	'	'
Contractual third-party reclamation receivables	0	0	'	'
Intangible assets	0	-1	'	'
Investment in subsidiaries	-241,696	-270,617	'	'
Other assets	-3,500	-2,000	'	'
Total Assets	-212,515	-240,647	'	'
Current liabilities	'	'	'	'
Current installments of long-term debt	0	0	'	'
Accounts payable and accrued expenses:	'	'	'	'
Trade	0	1	'	'
Production taxes	0	1	'	'
Workers' compensation	0	0	'	'
Postretirement medical benefits	1	1	'	'
SERP	0	0	'	'
Deferred revenue	0	0	'	'
Asset retirement obligations	0	-1	'	'
Other current liabilities	-31	-24	'	'
Total current liabilities	-30	-22	'	'
Long-term debt, less current installments	-3,500	-2,000	'	'
Workers' compensation, less current portion	0	0	'	'
Excess of black lung benefit obligation over trust assets	0	0	'	'
Postretirement medical benefits, less current portion	0	0	'	'
Pension and SERP obligations, less current portion	0	0	'	'
Deferred revenue, less current portion	0	-1	'	'
Asset retirement obligations, less current portion	0	0	'	'
Intangible liabilities	0	0	'	'
Other liabilities	0	-6,220	'	'
Intercompany receivable/payable	-19,920	-20,825	'	'
Total liabilities	-23,450	-29,068	'	'
Shareholders' deficit:	'	'	'	'
Preferred stock	0	0	'	'
Common stock	-247	-247	'	'
Other paid-in capital	-211,766	-211,606	'	'
Accumulated other comprehensive loss	-3,273	-3,175	'	'
Accumulated earnings (deficit)	26,221	3,449	'	'
Total equity (deficit)	-189,065	-211,579	'	'
Total Liabilities and Shareholders' Deficit	($212,515)	($240,647)	'	'

SUPPLEMENTAL_CONSOLIDATING_FIN3

SUPPLEMENTAL CONSOLIDATING FINANCIAL INFORMATION - Supplemental Consolidating Statement of Operations Information (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Condensed Financial Statements, Captions [Line Items]	'	'
Revenues	$180,202	$161,448
Costs, expenses and other:	'	'
Cost of sales	138,630	130,421
Depreciation, depletion and amortization	16,059	14,426
Selling and administrative	13,331	11,887
Heritage health benefit expenses	3,544	3,951
Loss (gain) on sales of assets	38	-234
Restructuring charges	397	0
Other operating loss (income)	150	-4,737
Total costs, expenses and other	172,149	155,714
Operating income (loss)	8,053	5,734
Other income (expense):	'	'
Interest expense	-20,798	-10,160
Interest income	302	297
Loss on foreign exchange	-6,790	0
Other income	93	70
Total other income (expense)	-27,193	-9,793
Income (loss) before income taxes and income of consolidated subsidiaries	-19,140	-4,059
Equity in income of subsidiaries	0	0
Loss before income taxes	-19,140	-4,059
Income tax expense (benefit)	-110	28
Net loss	-19,030	-4,087
Less net loss attributable to noncontrolling interest	0	-1,702
Net income (loss) attributable to the Parent company	-19,030	-2,385
Parent/ Issuer	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Revenues	0	0
Costs, expenses and other:	'	'
Cost of sales	0	0
Depreciation, depletion and amortization	76	94
Selling and administrative	3,746	3,054
Heritage health benefit expenses	3,326	3,689
Loss (gain) on sales of assets	0	0
Restructuring charges	0	'
Other operating loss (income)	0	0
Total costs, expenses and other	7,148	6,837
Operating income (loss)	-7,148	-6,837
Other income (expense):	'	'
Interest expense	-18,673	-7,584
Interest income	123	30
Loss on foreign exchange	-6,790	'
Other income	1	0
Total other income (expense)	-25,339	-7,554
Income (loss) before income taxes and income of consolidated subsidiaries	-32,487	-14,391
Equity in income of subsidiaries	13,319	10,304
Loss before income taxes	-19,168	-4,087
Income tax expense (benefit)	-138	0
Net loss	-19,030	-4,087
Less net loss attributable to noncontrolling interest	0	-1,702
Net income (loss) attributable to the Parent company	-19,030	-2,385
Co-Issuer	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Revenues	22,012	19,336
Costs, expenses and other:	'	'
Cost of sales	16,454	16,954
Depreciation, depletion and amortization	2,524	2,531
Selling and administrative	894	855
Heritage health benefit expenses	0	0
Loss (gain) on sales of assets	0	0
Restructuring charges	397	'
Other operating loss (income)	0	0
Total costs, expenses and other	20,269	20,340
Operating income (loss)	1,743	-1,004
Other income (expense):	'	'
Interest expense	-44	-10
Interest income	4	10
Loss on foreign exchange	0	'
Other income	0	0
Total other income (expense)	-40	0
Income (loss) before income taxes and income of consolidated subsidiaries	1,703	-1,004
Equity in income of subsidiaries	0	0
Loss before income taxes	1,703	-1,004
Income tax expense (benefit)	0	0
Net loss	1,703	-1,004
Less net loss attributable to noncontrolling interest	0	0
Net income (loss) attributable to the Parent company	1,703	-1,004
Guarantor Subsidiaries	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Revenues	64,292	50,687
Costs, expenses and other:	'	'
Cost of sales	50,558	40,421
Depreciation, depletion and amortization	6,269	5,189
Selling and administrative	2,994	2,637
Heritage health benefit expenses	0	0
Loss (gain) on sales of assets	-1	-133
Restructuring charges	0	'
Other operating loss (income)	150	-4,737
Total costs, expenses and other	59,970	43,377
Operating income (loss)	4,322	7,310
Other income (expense):	'	'
Interest expense	-110	-74
Interest income	25	44
Loss on foreign exchange	0	'
Other income	55	92
Total other income (expense)	-30	62
Income (loss) before income taxes and income of consolidated subsidiaries	4,292	7,372
Equity in income of subsidiaries	0	0
Loss before income taxes	4,292	7,372
Income tax expense (benefit)	-1,511	496
Net loss	5,803	6,876
Less net loss attributable to noncontrolling interest	0	0
Net income (loss) attributable to the Parent company	5,803	6,876
Non-Guarantor Subsidiaries	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Revenues	93,898	100,401
Costs, expenses and other:	'	'
Cost of sales	71,618	82,022
Depreciation, depletion and amortization	7,190	6,612
Selling and administrative	5,697	5,341
Heritage health benefit expenses	218	262
Loss (gain) on sales of assets	39	-101
Restructuring charges	0	'
Other operating loss (income)	0	0
Total costs, expenses and other	84,762	94,136
Operating income (loss)	9,136	6,265
Other income (expense):	'	'
Interest expense	-1,978	-2,500
Interest income	157	221
Loss on foreign exchange	0	'
Other income	37	-22
Total other income (expense)	-1,784	-2,301
Income (loss) before income taxes and income of consolidated subsidiaries	7,352	3,964
Equity in income of subsidiaries	0	0
Loss before income taxes	7,352	3,964
Income tax expense (benefit)	6,626	2,823
Net loss	726	1,141
Less net loss attributable to noncontrolling interest	0	0
Net income (loss) attributable to the Parent company	726	1,141
Consolidating Adjustments	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Revenues	0	-8,976
Costs, expenses and other:	'	'
Cost of sales	0	-8,976
Depreciation, depletion and amortization	0	0
Selling and administrative	0	0
Heritage health benefit expenses	0	0
Loss (gain) on sales of assets	0	0
Restructuring charges	0	'
Other operating loss (income)	0	0
Total costs, expenses and other	0	-8,976
Operating income (loss)	0	0
Other income (expense):	'	'
Interest expense	7	8
Interest income	-7	-8
Loss on foreign exchange	0	'
Other income	0	0
Total other income (expense)	0	0
Income (loss) before income taxes and income of consolidated subsidiaries	0	0
Equity in income of subsidiaries	-13,319	-10,304
Loss before income taxes	-13,319	-10,304
Income tax expense (benefit)	-5,087	-3,291
Net loss	-8,232	-7,013
Less net loss attributable to noncontrolling interest	0	0
Net income (loss) attributable to the Parent company	($8,232)	($7,013)

SUPPLEMENTAL_CONSOLIDATING_FIN4

SUPPLEMENTAL CONSOLIDATING FINANCIAL INFORMATION - Supplemental Consolidating Statements of Comprehensive Income (Loss) (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Condensed Financial Statements, Captions [Line Items]	'	'
Net loss	($19,030)	($4,087)
Other comprehensive income (loss)	'	'
Amortization of accumulated actuarial gains or losses, pension	359	741
Amortization of accumulated actuarial gains or losses, transition obligations, and prior service costs, postretirement medical benefit	5	1,001
Tax effect of other comprehensive income gains	-138	0
Other comprehensive income	226	1,742
Comprehensive income (loss) attributable to Westmoreland Coal Company	-18,804	-2,345
Parent/ Issuer	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net loss	-19,030	-4,087
Other comprehensive income (loss)	'	'
Amortization of accumulated actuarial gains or losses, pension	359	741
Amortization of accumulated actuarial gains or losses, transition obligations, and prior service costs, postretirement medical benefit	5	1,001
Tax effect of other comprehensive income gains	-138	'
Other comprehensive income	226	1,742
Comprehensive income (loss) attributable to Westmoreland Coal Company	-18,804	-2,345
Co-Issuer	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net loss	1,703	-1,004
Other comprehensive income (loss)	'	'
Amortization of accumulated actuarial gains or losses, pension	2	6
Amortization of accumulated actuarial gains or losses, transition obligations, and prior service costs, postretirement medical benefit	0	0
Tax effect of other comprehensive income gains	0	'
Other comprehensive income	2	6
Comprehensive income (loss) attributable to Westmoreland Coal Company	1,705	-998
Guarantor Subsidiaries	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net loss	5,803	6,876
Other comprehensive income (loss)	'	'
Amortization of accumulated actuarial gains or losses, pension	0	0
Amortization of accumulated actuarial gains or losses, transition obligations, and prior service costs, postretirement medical benefit	-119	0
Tax effect of other comprehensive income gains	0	'
Other comprehensive income	-119	0
Comprehensive income (loss) attributable to Westmoreland Coal Company	5,684	6,876
Non-Guarantor Subsidiaries	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net loss	726	1,141
Other comprehensive income (loss)	'	'
Amortization of accumulated actuarial gains or losses, pension	128	193
Amortization of accumulated actuarial gains or losses, transition obligations, and prior service costs, postretirement medical benefit	88	213
Tax effect of other comprehensive income gains	0	'
Other comprehensive income	216	406
Comprehensive income (loss) attributable to Westmoreland Coal Company	942	1,547
Consolidating Adjustments	'	'
Condensed Financial Statements, Captions [Line Items]	'	'
Net loss	-8,232	-7,013
Other comprehensive income (loss)	'	'
Amortization of accumulated actuarial gains or losses, pension	-130	-199
Amortization of accumulated actuarial gains or losses, transition obligations, and prior service costs, postretirement medical benefit	31	-213
Tax effect of other comprehensive income gains	0	'
Other comprehensive income	-99	-412
Comprehensive income (loss) attributable to Westmoreland Coal Company	($8,331)	($7,425)

SUPPLEMENTAL_CONSOLIDATING_FIN5

SUPPLEMENTAL CONSOLIDATING FINANCIAL INFORMATION - Supplemental Consolidating Statement of Cash Flow Information (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:	'	'
Net loss	($19,030)	($4,087)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:	'	'
Equity in income of subsidiaries	0	0
Depreciation, depletion, and amortization	16,059	14,426
Accretion of asset retirement obligation and receivable	3,479	3,180
Non-cash tax benefits	-138	0
Amortization of intangible assets and liabilities, net	153	164
Share-based compensation	728	2,386
Loss (gain) on sales of assets	38	-234
Amortization of deferred financing costs	271	933
Loss on sales of investment securities	0	7
Loss on foreign exchange	6,790	0
Changes in operating assets and liabilities:	'	'
Receivables, net	5,202	120
Inventories	4,525	-2,687
Excess of black lung benefit obligation over trust assets	701	83
Accounts payable and accrued expenses	10,959	3,245
Deferred revenue	-1,302	160
Income tax payable	28	27
Accrual for workers' compensation	-69	-191
Asset retirement obligations	-1,352	-3,207
Accrual for postretirement medical benefits	906	1,985
Pension and SERP obligations	-293	742
Other assets and liabilities	1,993	4,164
Distributions received from subsidiaries	0	0
Net cash provided by operating activities	29,648	21,216
Cash flows from investing activities:	'	'
Additions to property, plant and equipment	-3,050	-5,301
Change in restricted investments and bond collateral and reclamation deposits	-465,544	-6,435
Net proceeds from sales of assets	0	441
Proceeds from sale of restricted investments	0	5,619
Receivable from customer for property and equipment purchases	-10	-49
Other	-60	0
Net cash used in investing activities	-468,664	-5,725
Cash flows from financing activities:	'	'
Change in book overdrafts	-315	820
Borrowings from long-term debt	454,219	0
Repayments of long-term debt	-6,239	-6,573
Borrowings on revolving lines of credit	0	6,000
Repayments on revolving lines of credit	0	-6,000
Debt issuance costs and other refinancing costs	-7,598	-156
Dividends/distributions	-261	-340
Transactions with Parent/affiliates	0	0
Net cash provided by (used in) financing activities	439,806	-6,249
Net increase (decrease) in cash and cash equivalents	790	9,242
Cash and cash equivalents, beginning of period	61,110	31,610
Cash and cash equivalents, end of period	61,900	40,852
Parent/ Issuer	'	'
Cash flows from operating activities:	'	'
Net loss	-19,030	-4,087
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:	'	'
Equity in income of subsidiaries	-13,319	-10,304
Depreciation, depletion, and amortization	76	94
Accretion of asset retirement obligation and receivable	0	0
Non-cash tax benefits	-138	'
Amortization of intangible assets and liabilities, net	0	0
Share-based compensation	569	682
Loss (gain) on sales of assets	0	0
Amortization of deferred financing costs	149	771
Loss on sales of investment securities	'	0
Loss on foreign exchange	6,790	'
Changes in operating assets and liabilities:	'	'
Receivables, net	-178	49
Inventories	0	0
Excess of black lung benefit obligation over trust assets	701	83
Accounts payable and accrued expenses	5,670	-8,202
Deferred revenue	0	0
Income tax payable	0	0
Accrual for workers' compensation	-69	-191
Asset retirement obligations	0	0
Accrual for postretirement medical benefits	-374	-100
Pension and SERP obligations	83	320
Other assets and liabilities	-183	-187
Distributions received from subsidiaries	42,500	19,600
Net cash provided by operating activities	23,247	-1,472
Cash flows from investing activities:	'	'
Additions to property, plant and equipment	38	-157
Change in restricted investments and bond collateral and reclamation deposits	-471,151	-398
Net proceeds from sales of assets	'	0
Proceeds from sale of restricted investments	'	0
Receivable from customer for property and equipment purchases	0	0
Other	0	'
Net cash used in investing activities	-471,113	-555
Cash flows from financing activities:	'	'
Change in book overdrafts	0	0
Borrowings from long-term debt	454,219	'
Repayments of long-term debt	0	0
Borrowings on revolving lines of credit	'	0
Repayments on revolving lines of credit	'	0
Debt issuance costs and other refinancing costs	-7,598	0
Dividends/distributions	-261	-340
Transactions with Parent/affiliates	4,939	-22,106
Net cash provided by (used in) financing activities	451,299	-22,446
Net increase (decrease) in cash and cash equivalents	3,433	-24,473
Cash and cash equivalents, beginning of period	25,326	14,836
Cash and cash equivalents, end of period	28,759	-9,637
Co-Issuer	'	'
Cash flows from operating activities:	'	'
Net loss	1,703	-1,004
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:	'	'
Equity in income of subsidiaries	0	0
Depreciation, depletion, and amortization	2,524	2,531
Accretion of asset retirement obligation and receivable	18	16
Non-cash tax benefits	0	'
Amortization of intangible assets and liabilities, net	146	156
Share-based compensation	7	10
Loss (gain) on sales of assets	0	0
Amortization of deferred financing costs	0	0
Loss on sales of investment securities	'	0
Loss on foreign exchange	0	'
Changes in operating assets and liabilities:	'	'
Receivables, net	480	2,885
Inventories	4,316	-2,181
Excess of black lung benefit obligation over trust assets	0	0
Accounts payable and accrued expenses	-3,386	5,960
Deferred revenue	-2,415	-1,927
Income tax payable	0	0
Accrual for workers' compensation	0	0
Asset retirement obligations	0	0
Accrual for postretirement medical benefits	0	0
Pension and SERP obligations	1	4
Other assets and liabilities	-309	465
Distributions received from subsidiaries	0	0
Net cash provided by operating activities	3,085	6,915
Cash flows from investing activities:	'	'
Additions to property, plant and equipment	-35	-134
Change in restricted investments and bond collateral and reclamation deposits	5,998	-3
Net proceeds from sales of assets	'	0
Proceeds from sale of restricted investments	'	0
Receivable from customer for property and equipment purchases	0	0
Other	0	'
Net cash used in investing activities	5,963	-137
Cash flows from financing activities:	'	'
Change in book overdrafts	0	0
Borrowings from long-term debt	0	'
Repayments of long-term debt	0	0
Borrowings on revolving lines of credit	'	0
Repayments on revolving lines of credit	'	0
Debt issuance costs and other refinancing costs	0	0
Dividends/distributions	-8,500	-6,500
Transactions with Parent/affiliates	154	-16
Net cash provided by (used in) financing activities	-8,346	-6,516
Net increase (decrease) in cash and cash equivalents	702	262
Cash and cash equivalents, beginning of period	3,341	4,545
Cash and cash equivalents, end of period	4,043	4,807
Guarantor Subsidiaries	'	'
Cash flows from operating activities:	'	'
Net loss	5,803	6,876
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:	'	'
Equity in income of subsidiaries	0	0
Depreciation, depletion, and amortization	6,269	5,189
Accretion of asset retirement obligation and receivable	1,278	1,050
Non-cash tax benefits	0	'
Amortization of intangible assets and liabilities, net	0	0
Share-based compensation	37	681
Loss (gain) on sales of assets	-1	-133
Amortization of deferred financing costs	0	13
Loss on sales of investment securities	'	7
Loss on foreign exchange	0	'
Changes in operating assets and liabilities:	'	'
Receivables, net	-2,738	-2,467
Inventories	944	-753
Excess of black lung benefit obligation over trust assets	0	0
Accounts payable and accrued expenses	7,356	-10
Deferred revenue	844	1,703
Income tax payable	0	-1,679
Accrual for workers' compensation	0	0
Asset retirement obligations	-9	-190
Accrual for postretirement medical benefits	935	1,478
Pension and SERP obligations	113	177
Other assets and liabilities	-1,616	-195
Distributions received from subsidiaries	0	0
Net cash provided by operating activities	19,215	11,747
Cash flows from investing activities:	'	'
Additions to property, plant and equipment	-2,609	-4,224
Change in restricted investments and bond collateral and reclamation deposits	4	-151
Net proceeds from sales of assets	'	309
Proceeds from sale of restricted investments	'	120
Receivable from customer for property and equipment purchases	0	0
Other	0	'
Net cash used in investing activities	-2,605	-3,946
Cash flows from financing activities:	'	'
Change in book overdrafts	-317	-7
Borrowings from long-term debt	0	'
Repayments of long-term debt	-875	-713
Borrowings on revolving lines of credit	'	0
Repayments on revolving lines of credit	'	0
Debt issuance costs and other refinancing costs	0	0
Dividends/distributions	-18,000	-8,000
Transactions with Parent/affiliates	3,434	2,255
Net cash provided by (used in) financing activities	-15,758	-6,465
Net increase (decrease) in cash and cash equivalents	852	1,336
Cash and cash equivalents, beginning of period	7,942	5,362
Cash and cash equivalents, end of period	8,794	6,698
Non-Guarantor Subsidiaries	'	'
Cash flows from operating activities:	'	'
Net loss	726	1,141
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:	'	'
Equity in income of subsidiaries	0	0
Depreciation, depletion, and amortization	7,190	6,612
Accretion of asset retirement obligation and receivable	2,183	2,114
Non-cash tax benefits	0	'
Amortization of intangible assets and liabilities, net	7	8
Share-based compensation	115	1,013
Loss (gain) on sales of assets	39	-101
Amortization of deferred financing costs	122	149
Loss on sales of investment securities	'	0
Loss on foreign exchange	0	'
Changes in operating assets and liabilities:	'	'
Receivables, net	6,104	-3,355
Inventories	-735	247
Excess of black lung benefit obligation over trust assets	0	0
Accounts payable and accrued expenses	1,327	6,979
Deferred revenue	269	384
Income tax payable	28	1,706
Accrual for workers' compensation	0	0
Asset retirement obligations	-1,343	-3,017
Accrual for postretirement medical benefits	345	607
Pension and SERP obligations	-490	241
Other assets and liabilities	-2,880	4,081
Distributions received from subsidiaries	0	0
Net cash provided by operating activities	13,007	18,809
Cash flows from investing activities:	'	'
Additions to property, plant and equipment	-444	-786
Change in restricted investments and bond collateral and reclamation deposits	-395	-5,883
Net proceeds from sales of assets	'	132
Proceeds from sale of restricted investments	'	5,499
Receivable from customer for property and equipment purchases	-10	-49
Other	-60	'
Net cash used in investing activities	-909	-1,087
Cash flows from financing activities:	'	'
Change in book overdrafts	2	827
Borrowings from long-term debt	0	'
Repayments of long-term debt	-5,364	-5,860
Borrowings on revolving lines of credit	'	6,000
Repayments on revolving lines of credit	'	-6,000
Debt issuance costs and other refinancing costs	0	-156
Dividends/distributions	-16,000	-5,100
Transactions with Parent/affiliates	5,067	4,076
Net cash provided by (used in) financing activities	-16,295	-6,213
Net increase (decrease) in cash and cash equivalents	-4,197	11,509
Cash and cash equivalents, beginning of period	24,501	6,867
Cash and cash equivalents, end of period	20,304	18,376
Consolidating Adjustments	'	'
Cash flows from operating activities:	'	'
Net loss	-8,232	-7,013
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:	'	'
Equity in income of subsidiaries	13,319	10,304
Depreciation, depletion, and amortization	0	0
Accretion of asset retirement obligation and receivable	0	0
Non-cash tax benefits	0	'
Amortization of intangible assets and liabilities, net	0	0
Share-based compensation	0	0
Loss (gain) on sales of assets	0	0
Amortization of deferred financing costs	0	0
Loss on sales of investment securities	'	0
Loss on foreign exchange	0	'
Changes in operating assets and liabilities:	'	'
Receivables, net	1,534	3,008
Inventories	0	0
Excess of black lung benefit obligation over trust assets	0	0
Accounts payable and accrued expenses	-8	-1,482
Deferred revenue	0	0
Income tax payable	0	0
Accrual for workers' compensation	0	0
Asset retirement obligations	0	0
Accrual for postretirement medical benefits	0	0
Pension and SERP obligations	0	0
Other assets and liabilities	6,981	0
Distributions received from subsidiaries	-42,500	-19,600
Net cash provided by operating activities	-28,906	-14,783
Cash flows from investing activities:	'	'
Additions to property, plant and equipment	0	0
Change in restricted investments and bond collateral and reclamation deposits	0	0
Net proceeds from sales of assets	'	0
Proceeds from sale of restricted investments	'	0
Receivable from customer for property and equipment purchases	0	0
Other	0	'
Net cash used in investing activities	0	0
Cash flows from financing activities:	'	'
Change in book overdrafts	0	0
Borrowings from long-term debt	0	'
Repayments of long-term debt	0	0
Borrowings on revolving lines of credit	'	0
Repayments on revolving lines of credit	'	0
Debt issuance costs and other refinancing costs	0	0
Dividends/distributions	42,500	19,600
Transactions with Parent/affiliates	-13,594	15,791
Net cash provided by (used in) financing activities	28,906	35,391
Net increase (decrease) in cash and cash equivalents	0	20,608
Cash and cash equivalents, beginning of period	0	0
Cash and cash equivalents, end of period	$0	$20,608