Rhino Resource Partners 10-Q 7 May 14 2014 Q1 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	3 Months Ended
	Mar. 31, 2014	2-May-14	2-May-14
		Common Units [Member]	Subordinated Units [Member]
Document Type	'10-Q	'	'
Amendment Flag	'false	'	'
Document Period End Date	31-Mar-14	'	'
Document Fiscal Year Focus	'2014	'	'
Document Fiscal Period Focus	'Q1	'	'
Entity Registrant Name	'Rhino Resource Partners LP	'	'
Entity Central Index Key	'0001490630	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Filer Category	'Accelerated Filer	'	'
Entity Common Stock Shares Outstanding	'	16,681,133	12,397,000
Entity Well-known Seasoned Issuer	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Voluntary Filers	'No	'	'

Consolidated_Statements_Of_Fin

Consolidated Statements Of Financial Position (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
CURRENT ASSETS:	'	'
Cash and cash equivalents	$1,097	$423
Accounts receivable, net of allowance for doubtful accounts ($0 as of December 31, 2013 and 2012)	24,034	25,461
Inventories	16,822	18,580
Advance royalties, current portion	55	179
Prepaid expenses and other	3,668	4,572
Current assets held for sale	'	454
Total current assets	45,676	49,669
PROPERTY, PLANT AND EQUIPMENT:	'	'
At cost, including coal properties, mine development and construction costs	690,998	674,708
Less accumulated depreciation, depletion and amortization	-257,144	-249,718
Net property, plant and equipment	433,854	424,990
Advance royalties, net of current portion	5,951	5,580
Investment in unconsolidated affiliates	21,594	21,243
Intangible assets, net	1,127	1,148
Other non-current assets	7,646	9,640
Non-current assets held for sale	'	55,497
TOTAL	515,848	567,767
CURRENT LIABILITIES:	'	'
Accounts payable	18,304	17,710
Accrued expenses and other	17,802	20,567
Current portion of long-term debt	821	1,024
Current portion of asset retirement obligations	2,220	1,614
Current portion of postretirement benefits	334	334
Current liabilities held for sale	'	5,241
Total current liabilities	39,481	46,490
NON-CURRENT LIABILITIES:	'	'
Long-term debt, net of current portion	7,162	170,022
Asset retirement obligations, net of current portion	32,493	32,837
Other non-current liabilities	16,605	16,220
Postretirement benefits, net of current portion	5,853	5,786
Non-current liabilities held for sale	'	41
Total non-current liabilities	62,113	224,906
Total liabilities	101,594	271,396
COMMITMENTS AND CONTINGENCIES (NOTE 15)	'	'
PARTNERS' CAPITAL:	'	'
Limited partners	399,064	283,339
General partner	13,051	10,801
Accumulated other comprehensive income	2,139	2,231
Total partners' capital	414,254	296,371
TOTAL	$515,848	$567,767

Consolidated_Statements_Of_Ope

Consolidated Statements Of Operations And Comprehensive Income (USD $)	3 Months Ended
Share data in Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014		Mar. 31, 2013
REVENUES:	'		'
Coal sales	$51,235,000		$67,414,000
Freight and handling revenues	338,000		622,000
Other revenues	8,369,000		6,431,000
Total revenues	59,942,000		74,467,000
COSTS AND EXPENSES:	'		'
Cost of operations (exclusive of depreciation, depletion and amortization shown separately below)	46,399,000		54,772,000
Freight and handling costs	301,000		235,000
Depreciation, depletion and amortization	9,232,000		10,092,000
Selling, general and administrative (exclusive of depreciation, depletion and amortization shown separately above)	5,557,000		5,488,000
(Gain) on sale/disposal of assets, net	-679,000		925,000
Total costs and expenses	60,810,000		71,512,000
(LOSS)/INCOME FROM OPERATIONS	-868,000		2,955,000
INTEREST AND OTHER (EXPENSE)/INCOME:	'		'
Interest expense and other	-3,184,000		-1,854,000
Interest income and other	3,000		'
Equity in net (loss)/income of unconsolidated affiliates	-917,000		-1,372,000
Total interest and other (expense)	-4,098,000		-3,226,000
NET (LOSS) BEFORE INCOME TAXES FROM CONTINUING OPERATIONS	-4,966,000		-271,000
INCOME TAXES	'		'
NET (LOSS) FROM CONTINUING OPERATIONS	-4,966,000		-271,000
DISCONTINUED OPERATIONS (NOTE 3)	'		'
Income from discontinued operations	130,511,000		94,000
NET INCOME/(LOSS)	125,545,000		-177,000
Other comprehensive income -	'		'
Change in actuarial gain under ASC Topic 715	-92,000		-36,000
COMPREHENSIVE INCOME/(LOSS)	125,453,000		-213,000
Net income per limited partner unit, diluted:	'		'
Distributions paid per limited partner unit	$0.45	[1]	$0.45	[1]
Common Units [Member]	'		'
Net income per limited partner unit, basic:	'		'
Net (loss) per unit from continuing operations	($0.17)		($0.01)
Net income per unit from discontinued operations	$4.40		'
Net income/(loss) per common unit, basic	$4.23		($0.01)
Net income per limited partner unit, diluted:	'		'
Net (loss) per unit from continuing operations	($0.17)		($0.01)
Net income per unit from discontinued operations	$4.40		'
Net income/(loss) per common unit, diluted	$4.23		($0.01)
Weighted average number of limited partner units outstanding, basic:	'		'
Weighted average number of limited partner units outstanding, basic	16,667		15,354
Weighted average number of limited partner units outstanding, diluted:	'		'
Weighted average number of limited partner units outstanding, diluted	16,673		15,354
Subordinated Units [Member]	'		'
Net income per limited partner unit, basic:	'		'
Net (loss) per unit from continuing operations	($0.17)		($0.01)
Net income per unit from discontinued operations	$4.40		'
Net income/(loss) per common unit, basic	$4.23		($0.01)
Net income per limited partner unit, diluted:	'		'
Net (loss) per unit from continuing operations	($0.17)		($0.01)
Net income per unit from discontinued operations	$4.40		'
Net income/(loss) per common unit, diluted	$4.23		($0.01)
Distributions paid per limited partner unit	$0		$0
Weighted average number of limited partner units outstanding, basic:	'		'
Weighted average number of limited partner units outstanding, basic	12,397		12,397
Weighted average number of limited partner units outstanding, diluted:	'		'
Weighted average number of limited partner units outstanding, diluted	12,397		12,397
General Partner [Member]	'		'
INTEREST AND OTHER (EXPENSE)/INCOME:	'		'
NET (LOSS) FROM CONTINUING OPERATIONS	-99,000		-6,000
DISCONTINUED OPERATIONS (NOTE 3)	'		'
Income from discontinued operations	2,610,000		2,000
NET INCOME/(LOSS)	2,511,000		-4,000
Common Unitholders [Member]	'		'
INTEREST AND OTHER (EXPENSE)/INCOME:	'		'
NET (LOSS) FROM CONTINUING OPERATIONS	-2,795,000		-152,000
DISCONTINUED OPERATIONS (NOTE 3)	'		'
Income from discontinued operations	73,343,000		51,000
NET INCOME/(LOSS)	70,548,000		-101,000
Net income per limited partner unit, basic:	'		'
Net (loss) per unit from continuing operations	($0.17)		($0.01)
Net income per unit from discontinued operations	$4.40		'
Net income per limited partner unit, diluted:	'		'
Net (loss) per unit from continuing operations	($0.17)		($0.01)
Net income per unit from discontinued operations	$4.40		'
Weighted average number of limited partner units outstanding, basic:	'		'
Weighted average number of limited partner units outstanding, basic	16,667		15,354
Weighted average number of limited partner units outstanding, diluted:	'		'
Weighted average number of limited partner units outstanding, diluted	16,673		15,354
Subordinated Unitholders[Member]	'		'
INTEREST AND OTHER (EXPENSE)/INCOME:	'		'
NET (LOSS) FROM CONTINUING OPERATIONS	-2,072,000		-113,000
DISCONTINUED OPERATIONS (NOTE 3)	'		'
Income from discontinued operations	54,558,000		41,000
NET INCOME/(LOSS)	$52,486,000		($72,000)
Net income per limited partner unit, basic:	'		'
Net (loss) per unit from continuing operations	($0.17)		($0.01)
Net income per unit from discontinued operations	$4.40		'
Net income per limited partner unit, diluted:	'		'
Net (loss) per unit from continuing operations	($0.17)		($0.01)
Net income per unit from discontinued operations	$4.40		'
Weighted average number of limited partner units outstanding, basic:	'		'
Weighted average number of limited partner units outstanding, basic	12,397		12,397
Weighted average number of limited partner units outstanding, diluted:	'		'
Weighted average number of limited partner units outstanding, diluted	12,397		12,397
[1]	No distributions were paid on the subordinated units for the three months ended March 31, 2014 and 2013

Consolidated_Statements_Of_Ope1

Consolidated Statements Of Operations And Comprehensive Income (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Distributions paid per limited partner unit	$0.45	[1]	$0.45	[1]
Subordinated Units [Member]	'		'
Distributions paid per limited partner unit	$0		$0
[1]	No distributions were paid on the subordinated units for the three months ended March 31, 2014 and 2013

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 income	$125,545	($177)
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation, depletion and amortization	9,232	10,212
Accretion on asset retirement obligations	589	589
Accretion on interest-free debt	'	57
Amortization of deferred revenue	-327	-302
Amortization of advance royalties	35	25
Amortization of debt issuance costs	1,410	269
Amortization of actuarial gain	-92	-36
Equity in net loss/(income) of unconsolidated affiliates	917	1,372
Loss on retirement of advance royalties	'	10
(Gain) on sale/disposal of assets-net	-130,778	925
Equity-based compensation	89	283
Changes in assets and liabilities:	'	'
Accounts receivable	719	-2,734
Inventories	1,758	3,706
Advance royalties	-282	-393
Prepaid expenses and other assets	1,593	347
Accounts payable	2,487	-947
Accrued expenses and other liabilities	-783	-2,361
Asset retirement obligations	-326	-341
Postretirement benefits	67	99
Net cash provided by operating activities	11,853	10,603
CASH FLOWS FROM INVESTING ACTIVITIES:	'	'
Additions to property, plant, and equipment	-28,065	-6,089
Proceeds from sales of property, plant, and equipment	189,088	523
Investment in unconsolidated affiliates	-1,269	-677
Net cash used in investing activities	159,754	-6,243
CASH FLOWS FROM FINANCING ACTIVITIES:	'	'
Borrowings on line of credit	50,900	39,700
Repayments on line of credit	-213,710	-35,470
Repayments on long-term debt	-254	-1,229
Distributions to unitholders	-7,722	-7,097
General partner's contributions	3	2
Net settlement of employee withholding taxes on unit awards vested	-44	-25
Payments on debt issuance costs	-104	'
Payment of offering costs	-2	'
Net cash used in financing activities	-170,933	-4,119
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	674	241
CASH AND CASH EQUIVALENTS-Beginning of period	423	461
CASH AND CASH EQUIVALENTS-End of period	$1,097	$702

Organization_And_Basis_Of_Pres

Organization And Basis Of Presentation	3 Months Ended
	Mar. 31, 2014
Organization And Basis Of Presentation [Abstract]	'
Organization And Basis Of Presentation	'
	1. BASIS OF PRESENTATION AND ORGANIZATION
	Basis of Presentation and Principles of Consolidation— The accompanying unaudited interim financial statements include the accounts of Rhino Resource Partners LP and its subsidiaries (the “Partnership”). Intercompany transactions and balances have been eliminated in consolidation.
	Unaudited Interim Financial Information—The accompanying unaudited interim financial statements have been prepared in accordance with generally accepted accounting principles for interim financial information. The condensed consolidated statement of financial position as of March  31, 2014, condensed consolidated statements of operations and comprehensive income for the three months ended March  31, 2014 and 2013 and the condensed consolidated statements of cash flows for the three months ended March 31, 2014 and 2013 include all adjustments (consisting of normal recurring adjustments) which the Partnership considers necessary for a fair presentation of the financial position, operating results and cash flows for the periods presented. The condensed consolidated statement of financial position as of December 31, 2013 was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America (“U.S.”). The Partnership filed its Annual Report on Form 10-K for the year ended December 31, 2013 with the Securities and Exchange Commission (“SEC”), which included all information and notes necessary for such presentation. The results of operations for the interim period are not necessarily indicative of the results to be expected for the year or any future period. These unaudited interim financial statements should be read in conjunction with the audited financial statements included in the Partnership’s Annual Report on Form 10-K for the year ended December 31, 2013 filed with the SEC.
	Organization—Rhino Resource Partners LP is a Delaware limited partnership formed on April 19, 2010 to acquire Rhino Energy LLC (the “Predecessor” or the “Operating Company”). Rhino Resource Partners LP had no operations during the period from April 19, 2010 (date of inception) to October 5, 2010 (the consummation of the initial public offering (“IPO”) of the Partnership). The Operating Company and its wholly owned subsidiaries produce and market coal from surface and underground mines in Kentucky, Ohio, West Virginia, and Utah. The majority of sales are made to domestic utilities and other coal-related organizations in the United States. In addition to operating coal properties, the Operating Company manages and leases coal properties and collects royalties from such management and leasing activities. The Operating Company was formed in April 2003 and has been built primarily via acquisitions.
	In addition to its coal operations, the Partnership has invested in oil and natural gas properties, mineral rights and other oil and gas infrastructure-related activities that generate revenues for the Partnership.
	Follow-on Offering
	On September 13, 2013, the Partnership completed a public offering of 1,265,000 common units, representing limited partner interests in the Partnership, at a price of $12.30 per common unit. Of the common units issued, 165,000 units were issued in connection with the exercise of the underwriter’s option to purchase additional units. Net proceeds from the offering were approximately $14.6 million, after deducting underwriting discounts and estimated offering expenses of approximately $1.0 million. The Partnership used the net proceeds from this offering, and a related capital contribution by Rhino GP LLC, the Partnership’s general partner (the “General Partner”), of approximately $0.3 million, to repay approximately $14.9 million of outstanding indebtedness under the Partnership’s credit facility.
	Reclassifications—Certain prior year amounts have been reclassified from continuing operations to discontinued operations to conform to the current year presentation (see note 3).

Summary_Of_Significant_Account

Summary Of Significant Accounting Policies And General	3 Months Ended
	Mar. 31, 2014
Summary Of Significant Accounting Policies And General [Abstract]	'
Summary Of Significant Accounting Policies And General	'
	2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND GENERAL
	Investment in Joint Ventures.    Investments in other entities are accounted for using the consolidation, equity method or cost basis depending upon the level of ownership, the Partnership’s ability to exercise significant influence over the operating and financial policies of the investee and whether the Partnership is determined to be the primary beneficiary of a variable interest entity. Equity investments are recorded at original cost and adjusted periodically to recognize the Partnership’s proportionate share of the investees’ net income or losses after the date of investment. Any losses from the Partnership’s equity method investment are absorbed by the Partnership based upon its proportionate ownership percentage. If losses are incurred that exceed the Partnership’s investment in the equity method entity, then the Partnership must continue to record its proportionate share of losses in excess of its investment. Investments are written down only when there is clear evidence that a decline in value that is other than temporary has occurred.
	In May 2008, the Operating Company entered into a joint venture, Rhino Eastern LLC (“Rhino Eastern”), with an affiliate of Patriot Coal Corporation (“Patriot”) to acquire the Eagle mining complex. To initially capitalize the joint venture, the Operating Company contributed approximately $16.1 million for a 51% ownership interest in the joint venture. The Partnership accounts for the investment in the joint venture and its results of operations under the equity method. The Partnership considers the operations of this entity to comprise a reporting segment (“Eastern Met”) and has provided additional detail related to this operation in Note 18, “Segment Information.” As of March 31, 2014 and December 31, 2013, the Partnership has recorded its Rhino Eastern equity method investment of $19.5 million and $19.4 million, respectively, as a long-term asset. During the three months ended March 31, 2014, the Partnership contributed additional capital based upon its ownership share to the Rhino Eastern joint venture in the amount of $1.0 million.
	On July 9, 2012, Patriot filed for Chapter 11 bankruptcy protection. Patriot successfully exited bankruptcy in December 2013 and normal operations have continued at the Rhino Eastern joint venture.
	In March 2012, the Partnership made an initial investment of approximately $0.1 million in a new joint venture, Timber Wolf, with affiliates of Wexford Capital LP (“Wexford Capital”).  Timber Wolf was formed to construct and operate a condensate river terminal that will provide barge trans-loading services for parties conducting activities in the Utica Shale region of eastern Ohio.  The initial investment was the Partnership’s proportionate minority ownership share to purchase land for the construction site of the condensate river terminal. Timber Wolf had no operating activities during 2013 or the three months ended March 31, 2014. The Partnership has included its Timber Wolf investment in its Other category for segment reporting purposes.
	In December 2012, the Partnership made an initial investment of approximately $2.0 million in a new joint venture, Muskie Proppant LLC (“Muskie”), with affiliates of Wexford Capital. Muskie was formed to provide sand for fracking operations to drillers in the Utica Shale region and other oil and natural gas basins in the United States. The Partnership recorded its proportionate share of the operating losses for Muskie for the three months ended March 31, 2014 and 2013 of approximately $42,000 and $150,000, respectively. During the three months ended March 31, 2014, the Partnership contributed additional capital based upon its ownership share to the Muskie joint venture in the amount of $0.2 million. In addition, during 2013, the Partnership provided a loan based upon its ownership share to Muskie in the amount of $0.2 million that remained outstanding as of March 31, 2014. As of March  31, 2014 and December 31, 2013, the Partnership has recorded its Muskie equity method investment of $2.0 million and $1.8 million, respectively, as a long-term asset. The Partnership includes any operating activities of Muskie in its Oil and Natural Gas segment for segment reporting purposes.

Discontinued_Operations

Discontinued Operations	3 Months Ended
	Mar. 31, 2014
Discontinued Operations [Abstract]	'
Discontinued Operations	'
	3. DISCONTINUED OPERATIONS
	Divestiture of Utica Shale Oil and Natural Gas Assets
	The Partnership and an affiliate of Wexford Capital have participated with Gulfport Energy (“Gulfport”), a publicly traded company, to acquire interests in a portfolio of oil and gas leases in the Utica Shale. During the year ended December 31, 2011, the Partnership completed the acquisitions of interests in a portfolio of leases in the Utica Shale region of eastern Ohio,  which consisted of a 10.8% interest in approximately 80,000 acres. During the third quarter of 2012, the Partnership completed an exchange of its initial 10.8% position for a pro rata interest in 125,000 acres under lease by Gulfport and an affiliate of Wexford Capital. The non-cash transaction was an exchange of the Partnership’s operating interest for the operating interest owned by another party in order to diversify the Partnership’s risk in its oil and gas investment. Thus, the Partnership determined that the non-cash exchange of the Partnership’s ownership interest in the Utica acreage did not result in any gain or loss. Also during the third quarter of 2012, the Partnership’s position was adjusted to a  5% net interest in the 125,000 acres, or approximately 6,250 net acres. As of December 31, 2013, the Partnership had invested approximately $31.1 million for its pro rata interest in the Utica Shale portfolio of oil and gas leases, which consisted of a 5% interest in a total of approximately 152,300 gross acres, or approximately 7,615 net acres. In addition, per the joint operating agreement among the Partnership, Gulfport and an affiliate of Wexford Capital, the Partnership had funded its proportionate share of drilling costs to Gulfport for wells being drilled on the Partnership’s acreage. As of December  31, 2013, the Partnership had funded approximately $23.3 million of drilling costs. The Partnership’s investment in the Utica Shale oil and gas leases as well as the proportionate amount of funded drilling costs are recorded in Non-current assets held for sale in the unaudited condensed consolidated statements of financial position as of December 31, 2013. For the three months ended March 31, 2013, the Partnership recorded revenue from its Utica Shale investment of approximately $0.3 million and recognized approximately $0.1 million in pre-tax profit that is recorded in Income from discontinued operations in the unaudited condensed consolidated statements of operations and comprehensive income.
	In  March 2014, the Partnership completed a purchase and sale agreement (the “Purchase Agreement”) with Gulfport to sell the Partnership’s oil and gas properties in the Utica Shale region for approximately $184.0 million (the “Purchase Price”). The Purchase Agreement was effective as of January 1, 2014 and the Purchase Price was adjusted for any unsettled expenditures made and/or proceeds received from the Partnership’s portion of its Utica Shale properties prior to the effective date. At the closing of the Purchase Agreement, the Partnership was immediately due approximately $179.0 million, net of any adjustments described above, and the remaining approximately $5.0 million is scheduled to be paid within approximately 90 days of March 20, 2014, subject to ongoing legal title work related to specific properties. The remaining $5.0 million to be paid per the Purchase agreement was not recognized in the financial statements of the Partnership at March 31, 2014 since this consideration is contingent upon legal title work related to specific properties included in the transaction. The Partnership recorded a gain of approximately $121.7 million during the three months ended March 31, 2014 related to this sale, which is recorded in Income from discontinued operations in the unaudited condensed consolidated statements of operations and comprehensive income. The gain from the Utica Shale transaction is included in the (Gain)/loss on sale/disposal of assets—net line in the operating activities section of the Partnership’s unaudited condensed consolidated statements of cash flows. The proceeds from the Utica Shale transaction are included in the Proceeds from sales of property, plant, and equipment line in the investing activities section of the Partnership’s unaudited condensed consolidated statements of cash flows.
	Other Oil and Natural Gas Activities
	In January 2014, the Partnership received approximately $8.4 million of net proceeds from the sale by Blackhawk Midstream LLC (“Blackhawk”) of its equity interest in two entities, Ohio Gathering Company, LLC and Ohio Condensate Company, LLC, to Summit Midstream Partners, LLC. As part of the joint operating agreement for the Utica Shale investment discussed above, the Partnership had the right to approximately 5% of the proceeds of the sale by Blackhawk. The Partnership recorded this $8.4 million in Income from discontinued operations in the unaudited condensed consolidated statements of operations and comprehensive income. The gain from the Blackhawk transaction is included in the (Gain)/loss on sale/disposal of assets—net line in the operating activities section of the Partnership’s unaudited condensed consolidated statements of cash flows. The proceeds from the Blackhawk transaction are included in the Proceeds from sales of property, plant, and equipment line in the investing activities section of the Partnership’s unaudited condensed consolidated statements of cash flows.

Prepaid_Expenses_And_Other_Cur

Prepaid Expenses And Other Current Assets	3 Months Ended
	Mar. 31, 2014
Prepaid Expenses And Other Current Assets [Abstract]	'
Prepaid Expenses And Other Current Assets	'
	4. PREPAID EXPENSES AND OTHER CURRENT ASSETS
	Prepaid expenses and other current assets as of March 31, 2014 and December 31, 2013 consisted of the following:
		March 31,	December 31,
		2014	2013
		(in thousands)
	Other prepaid expenses	$                      819	$                      951
	Prepaid insurance	1,005	1,958
	Prepaid leases	95	122
	Supply inventory	1,429	1,221
	Deposits	320	320
	Total Prepaid expenses and other	$                   3,668	$                   4,572

Property_Plant_And_Equipment

Property, Plant And Equipment	3 Months Ended
	Mar. 31, 2014
Property, Plant And Equipment [Abstract]	'
Property, Plant And Equipment	'
	5. PROPERTY, PLANT AND EQUIPMENT
	Property, plant and equipment, including coal properties and mine development and construction costs, as of March 31, 2014 and December 31, 2013 are summarized by major classification as follows:
		Useful Lives		31-Mar-14		31-Dec-13
				(in thousands)
	Land and land improvements			$         35,038		$         35,078
	Mining and other equipment and related facilities	2 - 20 Years		300,796		302,114
	Mine development costs	1 - 15 Years		76,709		73,344
	Coal properties	1 - 15 Years		238,213		238,975
	Oil and natural gas properties			8,093		8,093
	Construction work in process			32,149		17,104
	Total			690,998		674,708
	Less accumulated depreciation, depletion and amortization			-257,144		-249,718
	Net			$       433,854		$       424,990
	Depreciation expense for mining and other equipment and related facilities, depletion expense for coal properties and oil and gas properties, amortization expense for mine development costs, amortization expense for intangible assets and amortization expense for asset retirement costs for the three months ended March 31, 2014 and 2013  were as follows:
			Three Months Ended March 31,
			2014		2013
			(in thousands)
	Depreciation expense-mining and other equipment and related facilities		$              7,532		$              8,120
	Depletion expense for coal properties and oil and natural gas properties		1,194		1,275
	Amortization expense for mine development costs		424		671
	Amortization expense for intangible assets		21		21
	Amortization expense for asset retirement costs		61		5
	Total depreciation, depletion and amortization		$              9,232		$            10,092
	Long-Lived Asset Impairment
	During the fourth quarter of 2013, the Partnership’s management made a strategic decision to permanently close the mining operations at its McClane Canyon complex in Colorado. Since the McClane Canyon complex had been idled at the end of 2010, the Partnership had been actively marketing the coal from this complex to potential buyers, but had not been able to obtain suitable sales contracts. Due to the unfavorable long-term prospects for the coal market in the Colorado area and to avoid the ongoing costs that were being incurred to temporarily idle this complex, the Partnership’s management made the decision to permanently close this operation at the end of 2013. While a portion of the equipment from this operation was relocated to other operating locations, the Partnership incurred an impairment charge of approximately $1.7 million during 2013 related to specific property, plant and equipment.
	Acquisition of Coal Properties
	In May 2012, the Partnership completed the purchase of certain rights to coal leases and surface property located in Daviess and McLean counties in western Kentucky for approximately $1.5 million. In addition, the Partnership was subsequently required to pay an additional $2.0 million related to this acquisition after certain conditions were met, of which $1.6 million was paid in the third quarter of 2012 and the remaining $0.4 million was paid in the fourth quarter of 2013. The $2.0 million in total payments was recorded in Property, plant and equipment. An additional $1.0 million in potential payments has not yet been recorded because the conditions requiring payment of this amount have not occurred.
	As of December 31, 2013, the coal leases and property were estimated to contain approximately 32.6 million tons of proven and probable coal reserves that are contiguous to the Green River. The property is fully permitted and provides the Partnership with access to Illinois Basin coal that is adjacent to a navigable waterway, which could allow for exports to non-U.S. customers. The Partnership has commenced the construction of a new underground mining operation on this property with production targeted to begin in late May or early June 2014.

Goodwill_And_Intangible_Assets

Goodwill And Intangible Assets	3 Months Ended
	Mar. 31, 2014
Goodwill And Intangible Assets [Abstract]	'
Goodwill And Intangible Assets	'
	6. GOODWILL AND INTANGIBLE ASSETS
	Accounting Standards Codification (“ASC”) Topic 350 addresses financial accounting and reporting for goodwill and other intangible assets subsequent to their acquisition. Under the provisions of ASC Topic 350, goodwill and other intangible assets with indefinite useful lives are no longer amortized but instead tested for impairment at least annually.
	Intangible assets as of March 31, 2014 consisted of the following:
		Gross		Net
		Carrying	Accumulated	Carrying
	Intangible Asset	Amount	Amortization	Amount
		(in thousands)
	Patent	$              728	$              218	$              510
	Developed Technology	78	23	55
	Trade Name	184	26	158
	Customer List	470	66	404
	Total	$           1,460	$              333	$           1,127
	Intangible assets as of December 31, 2013 consisted of the following:
		Gross		Net
		Carrying	Accumulated	Carrying
	Intangible Asset	Amount	Amortization	Amount
		(in thousands)
	Patent	$              728	$              207	$              521
	Developed Technology	78	22	56
	Trade Name	184	23	161
	Customer List	470	60	410
	Total	$           1,460	$              312	$           1,148
	The Partnership considers the patent and developed technology intangible assets to have a useful life of 17 years and the trade name and customer list intangible assets to have a useful life of 20 years. All of the intangible assets are amortized over their useful life on a straight line basis.
	Amortization expense for the three months ended March 31, 2014 and 2013 is included in the depreciation, depletion and amortization table included in Note 5. The future total amortization expense for each of the five succeeding years related to intangible assets that are currently recorded in the unaudited condensed consolidated statement of financial position is estimated to be as follows at March 31, 2014:
			Developed		Customer
		Patent	Technology	Trade Name	List	Total
		(in thousands)
	2014 (from Apr 1 to Dec 31)	$                  32	$                    3	$                    7	$           18	$           60
	2015	43	5	9	23	80
	2016	43	5	9	23	80
	2017	43	5	9	23	80
	2018	43	5	9	23	80

Other_NonCurrent_Assets

Other Non-Current Assets	3 Months Ended
	Mar. 31, 2014
Other Non-Current Assets [Abstract]	'
Other Non-Current Assets	'
	7. OTHER NON-CURRENT ASSETS
	Other non-current assets as of March 31, 2014 and December 31, 2013 consisted of the following:
		March 31,	December 31,
		2014	2013
		(in thousands)
	Deposits and other	$                  543	$               1,223
	Debt issuance costs—net	2,229	3,535
	Non-current receivable	4,327	4,327
	Note receivable	206	206
	Deferred expenses	341	349
	Total	$               7,646	$               9,640
	Debt issuance costs were approximately $9.1 million and $9.0 million as of March 31, 2014 and December 31, 2013, respectively. Accumulated amortization of debt issuance costs were approximately $6.9 million and approximately $5.5 million as of March 31, 2014 and December 31, 2013, respectively. In March 2014, the Partnership entered into a second amendment of its amended and restated senior secured credit facility that reduced the borrowing capacity to $200 million. As part of executing the second amendment to the amended and restated senior secured credit facility, the Operating Company paid a fee of approximately $0.1 million to the lenders in March 2014, which was recorded as an addition to Debt issuance costs. In addition, the Partnership wrote-off approximately $1.1 million of its unamortized debt issuance costs since the second amendment reduced the borrowing capacity under the amended and restated senior secured credit facility. See Note 9 for further information on the amendment to the amended and restated senior secured credit facility.
	The non-current receivable balance of $4.3 million as of March 31, 2014 and December 31, 2013 consisted of the amount due from the Partnership’s workers’ compensation insurance providers for potential claims that are the primary responsibility of the Partnership, but are covered under the Partnership’s insurance policies. The $4.3 million is also included in the Partnership’s accrued workers’ compensation benefits liability balance, which is included in the non-current liabilities section of the Partnership’s unaudited condensed consolidated statements of financial position. The Partnership presents this amount on a gross asset and liability basis since a right of setoff does not exist per the accounting guidance in ASC Topic 210. This presentation has no impact on the Partnership’s results of operations or cash flows.

Accrued_Expenses_And_Other_Cur

Accrued Expenses And Other Current Liabilities	3 Months Ended
	Mar. 31, 2014
Accrued Expenses And Other Current Liabilities [Abstract]	'
Accrued Expenses And Other Current Liabilities	'
	8. ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES
	Accrued expenses and other current liabilities as of March 31, 2014 and December 31, 2013 consisted of the following:
		March 31,	December 31,
		2014	2013
		(in thousands)
	Payroll, bonus and vacation expense	$                3,024	$                3,573
	Non income taxes	4,285	2,750
	Royalty expenses	1,920	2,001
	Accrued interest	383	760
	Health claims	856	1,036
	Workers’ compensation & pneumoconiosis	1,190	1,190
	Deferred revenues	3,793	3,592
	Accrued insured litigation claims	1,418	2,579
	Other	933	3,086
	Total	$              17,802	$              20,567
	The $1.4 million and $2.6 million accrued for insured litigation claims as of March 31, 2014 and December 31, 2013, respectively, consists of probable and estimable litigation claims that are the primary obligation of the Partnership. The amount accrued for litigation claims decreased due to the settlement of various litigation claims during the three months ended March 31, 2014. The amount accrued for litigation claims is also due from the Partnership’s insurance providers and is included in Accounts receivable, net of allowance for doubtful accounts on the Partnership’s unaudited condensed consolidated statements of financial position. The Partnership presents this amount on a gross asset and liability basis as a right of setoff does not exist per the accounting guidance in ASC Topic 210. This presentation has no impact on the Partnership’s results of operations or cash flows.

Debt

Debt	3 Months Ended
	Mar. 31, 2014
Debt [Abstract]	'
Debt	'
	9. DEBT
	Debt as of March 31, 2014 and December 31, 2013 consisted of the following:
		March 31,	December 31,
		2014	2013
		(in thousands)
	Senior secured credit facility with PNC Bank, N.A.	$                4,230	$            167,040
	Note payable to H&L Construction Co., Inc.	603	800
	Other notes payable	3,150	3,206
	Total	7,983	171,046
	Less current portion	-821	-1,024
	Long-term debt	$                7,162	$            170,022
	Senior Secured Credit Facility with PNC Bank, N.A.—On July 29, 2011, the Operating Company and the Partnership, as a guarantor, executed an amended and restated senior secured credit facility with PNC Bank, N.A., as administrative agent, and a group of lenders, which are parties thereto. The maximum availability under the amended and restated credit facility was $300.0 million, with a one-time option to increase the availability by an amount not to exceed $50.0 million. Of the $300.0 million, $75.0 million was available for letters of credit. As described below, in March 2014 the amended and restated credit facility was amended and the borrowing capacity under the facility was reduced to $200 million, with the amount available for letters of credit unchanged. Borrowings under the facility bear interest, which varies depending upon the levels of certain financial ratios. As part of the agreement, the Operating Company is required to pay a commitment fee on the unused portion of the borrowing availability that also varies depending upon the levels of certain financial ratios. Borrowings on the amended and restated senior secured credit facility are collateralized by all of the unsecured assets of the Partnership. The amended and restated senior secured credit facility requires the Partnership to maintain certain minimum financial ratios and contains certain restrictive provisions, including among others, restrictions on making loans, investments and advances, incurring additional indebtedness, guaranteeing indebtedness, creating liens, and selling or assigning stock. The Partnership was in compliance with all covenants contained in the amended and restated senior secured credit facility as of and for the period ended March 31, 2014. The amended and restated senior secured credit facility expires in July 2016.
	In April 2013, the Partnership entered into an amendment of its amended and restated senior secured credit facility with PNC Bank, N.A., as administrative agent, and a group of lenders, which are parties thereto. The amendment provided for an increase in the maximum allowed investments in coal-related entities outside of the Partnership (i.e. joint ventures) under the amended and restated senior secured credit facility from $25 million to $40 million. The amendment also altered the maximum leverage ratio allowed under the amended and restated senior secured credit facility and also altered the pricing grid to include applicable interest rates for borrowings, letter of credit fees and commitment fees on unused borrowings based upon the new maximum leverage ratio. The amendment increased the maximum leverage ratio of the amended and restated senior secured credit facility to 3.75 from April 1, 2013 through March 31, 2015, then stepped the maximum leverage ratio down to its previous level of 3.0 after December 31, 2015. All other terms of the amended and restated senior secured credit facility were not affected by the amendment. As part of executing the amendment to the amended and restated senior secured credit facility, the Operating Company paid a fee of approximately $1.0 million to the lenders in April 2013, which was recorded in Debt issuance costs in Other non-current assets on the Partnership’s unaudited condensed consolidated statements of financial position.
	In March 2014, the Partnership entered into a second amendment of its amended and restated senior secured credit facility with PNC Bank, N.A., as administrative agent, and a group of lenders, which are parties thereto. This second amendment permitted the Partnership to sell certain assets to Gulfport, as described in Note 3, which previously constituted a portion of the collateral under the amended and restated senior secured credit facility. This second amendment also reduces the borrowing capacity under the amended and restated senior secured credit facility to a maximum of $200 million and alters the maximum leverage ratio to 3.5 from January 1, 2014 through September 30, 2015. The maximum leverage ratio decreases to 3.25 from October 1, 2015 through December 31, 2015 and then decreases to 3.0 after December 31, 2015. In addition, the second amendment adjusts the maximum investments (other than by the Partnership) in hydrocarbons, hydrocarbon interests and assets and activities related to hydrocarbons, in each case, excluding coal, in an aggregate amount not to exceed $50 million. As part of executing the second amendment to the amended and restated senior secured credit facility, the Operating Company paid a fee of approximately $0.1 million to the lenders in March 2014, which was recorded in Debt issuance costs in Other non-current assets on the Partnership’s unaudited condensed consolidated statements of financial position. In addition, the Partnership recorded a non-cash charge of approximately $1.1 million to write-off a portion of its unamortized debt issuance costs since the second amendment reduced the borrowing capacity under the amended and restated senior secured credit facility.
	As discussed in Note 3, the Partnership sold its Utica Shale oil and natural gas assets in March 2014 for approximately $184 million. The Partnership used the initial proceeds from this sale of approximately $179 million to reduce the outstanding debt on its amended and restated senior secured credit facility. At March 31, 2014, the Operating Company had borrowed $4.2 million at a variable interest rate of LIBOR plus 3.00% (3.16% at March 31, 2014). In addition, the Operating Company had outstanding letters of credit of approximately $20.3 million at a fixed interest rate of 3.00%  at March 31, 2014. Based upon a maximum borrowing capacity of 3.5 times a trailing twelve-month EBITDA calculation (as defined in the credit agreement), the Operating Company had not used $171.8 million of the borrowing availability at March 31, 2014.
	Note payable to H&L Construction Co., Inc.— The note payable to H&L Construction Co., Inc. was originally a non-interest bearing note and the Partnership has recorded a discount for imputed interest at a rate of 5.0% on this note that is being amortized over the life of the note using the effective interest method. The note payable matures in January 2015. The note is secured by mineral rights purchased by the Partnership from H&L Construction Co., Inc. with a carrying amount of approximately  $11.0 million and approximately $11.1 million at March 31, 2014 and December 31, 2013, respectively.

Asset_Retirement_Obligations

Asset Retirement Obligations	3 Months Ended
	Mar. 31, 2014
Asset Retirement Obligations [Abstract]	'
Asset Retirement Obligations	'
	10. ASSET RETIREMENT OBLIGATIONS
	The changes in asset retirement obligations for the three months ended March 31, 2014 and the year ended December 31, 2013 are as follows:
		31-Mar-14	31-Dec-13
		(in thousands)
	Balance at beginning of period (including current portion)	$                            34,451	$                            32,962
	Accretion expense	589	2,356
	Adjustment resulting from disposal of property	-	-
	Adjustments to the liability from annual recosting and other	-	61
	Liabilities settled	-327	-928
	Balance at end of period	34,713	34,451
	Less current portion of asset retirement obligation	-2,220	-1,614
	Long-term portion of asset retirement obligation	$                            32,493	$                      32,837

Employee_Benefits

Employee Benefits	3 Months Ended
	Mar. 31, 2014
Employee Benefits [Abstract]	'
Employee Benefits	'
	11. EMPLOYEE BENEFITS
	In conjunction with the acquisition of the coal operations of American Electric Power on April 16, 2004, the Operating Company acquired a postretirement benefit plan providing healthcare to eligible employees at its Hopedale operations. The Partnership has no other postretirement plans.
	Net periodic benefit cost for the three months ended March 31, 2014 and 2013 are as follows:
		Three months ended March 31,
		2014	2013
		(in thousands)
	Service costs	$                  74	$                  96
	Interest cost	59	46
	Amortization of (gain)	-92	-36
	Total	$                  41	$                106
	For the three months ended March 31, 2014 and 2013, net periodic benefit costs, including the amortization of actuarial gain included in the table above, are included in Cost of operations in the Partnership’s unaudited condensed consolidated statements of operations and comprehensive income.
	401(k) Plans—The Operating Company and certain subsidiaries sponsor defined contribution savings plans for all employees. Under one defined contribution savings plan, the Operating Company matches voluntary contributions of participants up to a maximum contribution based upon a percentage of a participant’s salary with an additional matching contribution possible at the Operating Company’s discretion. The expense under these plans for the three months ended March 31, 2014 and 2013 is included in Cost of operations in the Partnership’s unaudited condensed consolidated statements of operations and comprehensive income and was as follows:
		Three months ended March 31,
		2014	2013
		(in thousands)
	401(k) plan expense	$                568	$                580

EquityBased_Compensation

Equity-Based Compensation	3 Months Ended
	Mar. 31, 2014
Equity-Based Compensation [Abstract]	'
Equity-Based Compensation	'
	12. EQUITY-BASED COMPENSATION
	In October 2010, the General Partner established the Rhino Long-Term Incentive Plan (the “Plan” or “LTIP”). The Plan is intended to promote the interests of the Partnership by providing to employees, consultants and directors of the General Partner, the Partnership or affiliates of either incentive compensation awards to encourage superior performance. The LTIP provides for grants of restricted units, unit options, unit appreciation rights, phantom units, unit awards, and other unit-based awards.
	As of March 31, 2014, the General Partner had granted phantom units to certain employees and restricted units and unit awards to its directors. These grants consisted of annual restricted unit awards to directors and phantom unit awards with tandem distribution equivalent rights (“DERs”) granted in the first quarters of 2012, 2013 and 2014 to certain employees in connection with the prior year’s performance.  The DERs consist of rights to accrue quarterly cash distributions in an amount equal to the cash distribution the Partnership makes to unitholders during the vesting period. These awards are subject to service based vesting conditions and any accrued distributions will be forfeited if the related awards fail to vest according to the relevant service based vesting conditions.
	A total of 29,657 phantom units were granted in the first quarter of 2014 and these awards vest in equal annual installments over a three year period from the date of grant. The remaining terms and conditions of these phantom unit awards are equivalent to the terms described above.  The total fair value of the awards granted in the first quarter of 2014 was approximately $0.4 million at the grant date and the fair value of these awards was approximately $0.4 million as of March 31, 2014. The expense related to these awards will be recognized ratably over the three year vesting period, plus any mark-to-market adjustments, and the amount of expense recognized in the three months ended March 31, 2014 related to these awards was immaterial.
	The Partnership accounts for its unit-based awards as liabilities with applicable mark-to-market adjustments at each reporting period because the Compensation Committee of the board of directors of the General Partner has historically elected to pay some of the awards in cash in lieu of issuing common units.

Commitments_And_Contingencies

Commitments And Contingencies	3 Months Ended
	Mar. 31, 2014
Commitments And Contingencies [Abstract]	'
Commitments And Contingencies	'
	13. COMMITMENTS AND CONTINGENCIES
	Coal Sales Contracts and Contingencies—As of March 31, 2014, the Partnership had commitments under sales contracts to deliver annually scheduled base quantities of coal as follows:
	Year	Tons (in thousands)	Number of customers
	2014 Q2-Q4	2,368	20
	2015	1,796	4
	2016	1,100	2
	2017	1,100	2
	Some of the contracts have sales price adjustment provisions, subject to certain limitations and adjustments, based on a variety of factors and indices.
	Purchase Commitments—As of March 31, 2014, the Partnership had approximately  0.4 million gallons remaining on a commitment to purchase diesel fuel at fixed prices through December 2014 for approximately $1.4 million.
	In addition, as of March 31, 2014, the Partnership had a commitment to purchase 1,800 tons of ammonia nitrate at fixed prices through December 2014 for approximately $0.8 million.
	Purchased Coal Expenses—The Partnership incurs purchased coal expense from time to time related to coal purchase contracts. Purchased coal expense from coal purchase contracts for the three months ended March 31, 2014 and 2013 are included in Cost of operations in the Partnership’s unaudited condensed consolidated statements of operations and comprehensive income and were as follows:
		Three months ended March 31,
		2014	2013
		(in thousands)
	Purchased coal expense	$              1,850	$                 972
	Leases—The Partnership leases various mining, transportation and other equipment under operating leases. The Partnership also leases coal reserves under agreements that call for royalties to be paid as the coal is mined. Lease and royalty expense for the three months ended March 31, 2014 and 2013 are included in Cost of operations in the Partnership’s unaudited condensed consolidated statements of operations and comprehensive income and was as follows:
		Three months ended March 31,
		2014	2013
		(in thousands)
	Lease expense	$                799	$                867
	Royalty expense	$             2,760	$             2,908
	Joint Ventures—Pursuant to the Rhino Eastern joint venture agreement with Patriot, the Partnership is required to contribute additional capital to assist in funding the development and operations of the Rhino Eastern joint venture. During the three months ended March 31, 2014, the Partnership made capital contributions of approximately $1.0 million to the Rhino Eastern joint venture. The Partnership may be required to contribute additional capital to the Rhino Eastern joint venture in subsequent periods.
	The Partnership may contribute additional capital to the Timber Wolf joint venture that was formed in the first quarter of 2012.  The Partnership made an initial capital contribution of approximately $0.1 million during the year ended December 31, 2012 based upon its proportionate ownership interest.
	The Partnership may contribute additional capital to the Muskie Proppant joint venture that was formed in the fourth quarter of 2012. The Partnership made an initial capital contribution of approximately $2.0 million during the fourth quarter of 2012 and an additional capital contribution of approximately $0.5 million during the year ended December 31, 2013, each based upon its proportionate ownership interest. During the three months ended March 31, 2014, the Partnership made capital contributions based upon its proportionate ownership interest of approximately $0.2 million to the Muskie Proppant joint venture. In addition, during the year ended December 31, 2013, the Partnership provided a loan based upon its ownership share to Muskie in the amount of $0.2 million that remained outstanding as of March 31, 2014.

Earnings_Per_Unit_EPU

Earnings Per Unit ("EPU")	3 Months Ended
	Mar. 31, 2014
Earnings Per Unit ("EPU") [Abstract]	'
Earnings Per Unit ("EPU")	'
	14. EARNINGS PER UNIT (“EPU”)
	The following tables present a reconciliation of the numerators and denominators of the basic and diluted EPU calculations for the periods ended March 31, 2014 and 2013:
	Three months ended March 31, 2014	General Partner	Common Unitholders	Subordinated Unitholders
	Numerator:	(in thousands, except per unit data)
	Interest in net (loss)/income:
	Net (loss) from continuing operations	$              (99)	$              (2,795)	$                (2,072)
	Net income from discontinued operations	2,610	73,343	54,558
	Total interest in net income	$           2,511	$              70,548	$               52,486
	Denominator:
	Weighted average units used to compute basic EPU	n/a	16,667	12,397
	Effect of dilutive securities — LTIP awards:
	Dilutive securities for net (loss) from continuing operations	n/a	-	-
	Dilutive securities for net income from discontinued operations	n/a	6	-
	Total dilutive securities	n/a	6	-
	Weighted average units used to compute diluted EPU	n/a	16,673	12,397
	Net (loss)/income per limited partner unit, basic
	Net (loss) per unit from continuing operations	n/a	$                (0.17)	$                  (0.17)
	Net income per unit from discontinued operations	n/a	4.40	4.40
	Net income per common unit, basic	n/a	$                  4.23	$                   4.23
	Net (loss)/income per limited partner unit, diluted
	Net (loss) per unit from continuing operations	n/a	$                (0.17)	$                  (0.17)
	Net income per unit from discontinued operations	n/a	4.40	4.40
	Net income per common unit, diluted	n/a	$                  4.23	$                   4.23
	Three months ended March 31, 2013	General Partner	Common Unitholders	Subordinated Unitholders
	Numerator:	(in thousands, except per unit data)
	Interest in net (loss)/income:
	Net (loss) from continuing operations	$                (6)	$                (152)	$                  (113)
	Net income from discontinued operations	2	51	41
	Total interest in net (loss)	$                (4)	$                (101)	$                    (72)
	Denominator:
	Weighted average units used to compute basic EPU	n/a	15,354	12,397
	Effect of dilutive securities — LTIP awards:
	Dilutive securities for net (loss) from continuing operations	n/a	-	-
	Dilutive securities for net income from discontinued operations	n/a	-	-
	Total dilutive securities	n/a	-	-
	Weighted average units used to compute diluted EPU	n/a	15,354	12,397
	Net (loss)/income per limited partner unit, basic
	Net (loss) per unit from continuing operations	n/a	$               (0.01)	$                 (0.01)
	Net income per unit from discontinued operations	n/a	-	-
	Net (loss) per common unit, basic	n/a	$               (0.01)	$                 (0.01)
	Net (loss)/income per limited partner unit, diluted
	Net (loss) per unit from continuing operations	n/a	$               (0.01)	$                 (0.01)
	Net income per unit from discontinued operations	n/a	-	-
	Net (loss) per common unit, diluted	n/a	$               (0.01)	$                 (0.01)
	Diluted EPU gives effect to all dilutive potential common units outstanding during the period using the treasury stock method. Diluted EPU excludes all dilutive potential units calculated under the treasury stock method if their effect is anti-dilutive. For the three months ended March 31, 2014, approximately 6,000 LTIP granted phantom units were anti-dilutive. There were no anti-dilutive units for the three months ended March 31, 2013.

Major_Customers

Major Customers	3 Months Ended
	Mar. 31, 2014
Major Customers [Abstract]	'
Major Customers	'
	15. MAJOR CUSTOMERS
	The Partnership had revenues or receivables from the following major customers that in each period equaled or exceeded 10% of revenues (Note: customers with “n/a” had revenue below the 10% threshold in any period where this is indicated):
		31-Mar	Three months	Three months
		2014	ended	ended
		Receivable	31-Mar	31-Mar
		Balance	2014 Sales	2013 Sales
		(in thousands)
	NRG Energy, Inc. (fka GenOn Energy, Inc.)	$                   1,040	$                   6,820	$                 12,431
	Indiana Harbor Coke Company, L.P	n/a	n/a	7,981
	American Electric Power Company, Inc.	n/a	n/a	9,598

Fair_Value_Of_Financial_Instru

Fair Value Of Financial Instruments	3 Months Ended
	Mar. 31, 2014
Fair Value Of Financial Instruments [Abstract]	'
Fair Value Of Financial Instruments	'
	16. FAIR VALUE OF FINANCIAL INSTRUMENTS
	The book values of cash and cash equivalents, accounts receivable and accounts payable are considered to be representative of their respective fair values because of the immediate short-term maturity of these financial instruments. The fair value of the Partnership’s senior secured credit facility was determined based upon a market approach and approximates the carrying value at March 31, 2014. The fair value of the Partnership’s senior secured credit facility is a Level 2 measurement.

Supplemental_Disclosures_Of_Ca

Supplemental Disclosures Of Cash Flow Information	3 Months Ended
	Mar. 31, 2014
Supplemental Disclosures Of Cash Flow Information [Abstract]	'
Supplemental Disclosures Of Cash Flow Information	'
	17. SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
	The unaudited condensed consolidated statement of cash flows for the three months ended March 31, 2014 excludes approximately $3.0 million of property additions, which are recorded in accounts payable, and approximately $0.2 million related to the value of phantom and restricted units that were issued to certain employees and directors of the General Partner. The unaudited condensed consolidated statement of cash flows for the three months ended March 31, 2013 excludes approximately $2.7 million of property additions, which are recorded in accounts payable,   and approximately $0.1 million related to the value of phantom and restricted units that were issued to certain employees and directors of the general partner.

Segment_Information

Segment Information	3 Months Ended
	Mar. 31, 2014
Segment Information [Abstract]	'
Segment Information	'
	18. SEGMENT INFORMATION
	The Partnership produces and markets coal from surface and underground mines in Kentucky, West Virginia, Ohio and Utah. The Partnership sells primarily to electric utilities in the United States. The Partnership also leases coal reserves to third parties in exchange for royalty revenues. For the three months ended March 31, 2014, the Partnership had four reportable segments: Central Appalachia (comprised of both surface and underground mines located in Eastern Kentucky and Southern West Virginia, along with the Elk Horn coal leasing operations), Northern Appalachia (comprised of both surface and underground mines located in Ohio), Rhino Western (comprised of an underground mine in Utah) and Eastern Met (comprised solely of the joint venture with Patriot).
	Beginning with 2013 year-end reporting, the Partnership included a reportable business segment for its oil and natural gas activities since the total assets for these operations met the quantitative threshold for separate segment reporting. The Oil and Natural Gas segment included the Partnership’s Utica Shale activities, which were sold during the first quarter of 2014 as described in Note 3, as well as the Partnership’s Cana Woodford activities, the Razorback drill pad construction operations and the Muskie joint venture to provide sand for fracking operations. Prior to 2013, the Partnership’s oil and natural gas activities were included in its Other category for segment reporting purposes. Since the majority of the Partnership’s oil and natural gas activities were in the Utica Shale and the Utica Shale financial results are now included in discontinued operations due to their sale, the segment data for the Partnership’s remaining oil and natural gas activities has been included in the Other category for segment reporting purposes for 2014 and the 2013 comparable period since they are immaterial.
	The Partnership’s Other category is comprised of the Partnership’s ancillary businesses and its remaining oil and natural gas activities. The Partnership has not provided disclosure of total expenditures by segment for long-lived assets, as the Partnership does not maintain discrete financial information concerning segment expenditures for long lived assets, and accordingly such information is not provided to the Partnership’s chief operating decision maker. The information provided in the following tables represents the primary measures used to assess segment performance by the Partnership’s chief operating decision maker.
	The Partnership accounts for the Rhino Eastern joint venture under the equity method. Under the equity method of accounting, the Partnership has only presented limited information (net income). The Partnership considers this operation to comprise a separate operating segment and has presented additional operating detail, with corresponding eliminations and adjustments, to reflect its percentage of ownership.
	Reportable segment results of operations for the three months ended March 31, 2014 are as follows (Note: “DD&A” refers to depreciation, depletion and amortization):
					Eastern Met
						Equity	Equity
		Central	Northern	Rhino	Complete	Method	Method		Total
		Appalachia	Appalachia	Western	Basis	Eliminations	Presentation	Other	Consolidated
		(in thousands)
	Total revenues	$       30,561	$       18,764	$      9,586	$       7,529	$          (7,529)	$                   -	$      1,031	$         59,942
	DD&A	5,402	1,878	1,418	500	-500	-	534	9,232
	Interest expense	1,053	177	150	15	-15	-	1,804	3,184
	Net Income (loss) from continuing operations	$       (3,818)	$         1,104	$        (346)	$      (1,717)	$              841	$             (876)	$     (1,030)	$          (4,966)
	Reportable segment results of operations for the three months ended March 31, 2013 are as follows:
					Eastern Met
						Equity	Equity
		Central	Northern	Rhino	Complete	Method	Method		Total
		Appalachia	Appalachia	Western	Basis	Eliminations	Presentation	Other	Consolidated
		(in thousands)
	Total revenues	$       41,942	$       21,867	$      9,597	$       6,168	$          (6,168)	$                   -	$      1,061	$         74,467
	DD&A	6,266	2,052	1,350	475	-475	-	424	10,092
	Interest expense	972	190	159	-	-	-	533	1,854
	Net Income (loss) from continuing operations	$       (2,204)	$         4,623	$        (103)	$      (2,397)	$           1,174	$          (1,223)	$     (1,364)	$             (271)
	Additional summarized financial information for the Rhino Eastern equity method investment for the periods ended March 31, 2014 and 2013:
		Three months ended March 31,
		2014		2013
		(in thousands)
	Total costs and expenses	$              9,231		$              8,566
	(Loss) from operations	-1,702		-2,398

Subsequent_Events

Subsequent Events	3 Months Ended
	Mar. 31, 2014
Subsequent Events [Abstract]	'
Subsequent Events	'
	19.  SUBSEQUENT EVENTS
	On April 21, 2014, the Partnership announced a cash distribution of $0.445  per common unit, or $1.78 per unit on an annualized basis. This distribution will be paid on May 15, 2014 to all common unit holders of record as of the close of business on May 1, 2014. No distributions will be paid on the subordinated units.

Summary_Of_Significant_Account1

Summary Of Significant Accounting Policies And General (Policies)	3 Months Ended
	Mar. 31, 2014
Summary Of Significant Accounting Policies And General [Abstract]	'
Investment In Joint Ventures	'
	Investment in Joint Ventures.    Investments in other entities are accounted for using the consolidation, equity method or cost basis depending upon the level of ownership, the Partnership’s ability to exercise significant influence over the operating and financial policies of the investee and whether the Partnership is determined to be the primary beneficiary of a variable interest entity. Equity investments are recorded at original cost and adjusted periodically to recognize the Partnership’s proportionate share of the investees’ net income or losses after the date of investment. Any losses from the Partnership’s equity method investment are absorbed by the Partnership based upon its proportionate ownership percentage. If losses are incurred that exceed the Partnership’s investment in the equity method entity, then the Partnership must continue to record its proportionate share of losses in excess of its investment. Investments are written down only when there is clear evidence that a decline in value that is other than temporary has occurred.
	In May 2008, the Operating Company entered into a joint venture, Rhino Eastern LLC (“Rhino Eastern”), with an affiliate of Patriot Coal Corporation (“Patriot”) to acquire the Eagle mining complex. To initially capitalize the joint venture, the Operating Company contributed approximately $16.1 million for a 51% ownership interest in the joint venture. The Partnership accounts for the investment in the joint venture and its results of operations under the equity method. The Partnership considers the operations of this entity to comprise a reporting segment (“Eastern Met”) and has provided additional detail related to this operation in Note 18, “Segment Information.” As of March 31, 2014 and December 31, 2013, the Partnership has recorded its Rhino Eastern equity method investment of $19.5 million and $19.4 million, respectively, as a long-term asset. During the three months ended March 31, 2014, the Partnership contributed additional capital based upon its ownership share to the Rhino Eastern joint venture in the amount of $1.0 million.
	On July 9, 2012, Patriot filed for Chapter 11 bankruptcy protection. Patriot successfully exited bankruptcy in December 2013 and normal operations have continued at the Rhino Eastern joint venture.
	In March 2012, the Partnership made an initial investment of approximately $0.1 million in a new joint venture, Timber Wolf, with affiliates of Wexford Capital LP (“Wexford Capital”).  Timber Wolf was formed to construct and operate a condensate river terminal that will provide barge trans-loading services for parties conducting activities in the Utica Shale region of eastern Ohio.  The initial investment was the Partnership’s proportionate minority ownership share to purchase land for the construction site of the condensate river terminal. Timber Wolf had no operating activities during 2013 or the three months ended March 31, 2014. The Partnership has included its Timber Wolf investment in its Other category for segment reporting purposes.
	In December 2012, the Partnership made an initial investment of approximately $2.0 million in a new joint venture, Muskie Proppant LLC (“Muskie”), with affiliates of Wexford Capital. Muskie was formed to provide sand for fracking operations to drillers in the Utica Shale region and other oil and natural gas basins in the United States. The Partnership recorded its proportionate share of the operating losses for Muskie for the three months ended March 31, 2014 and 2013 of approximately $42,000 and $150,000, respectively. During the three months ended March 31, 2014, the Partnership contributed additional capital based upon its ownership share to the Muskie joint venture in the amount of $0.2 million. In addition, during 2013, the Partnership provided a loan based upon its ownership share to Muskie in the amount of $0.2 million that remained outstanding as of March 31, 2014. As of March  31, 2014 and December 31, 2013, the Partnership has recorded its Muskie equity method investment of $2.0 million and $1.8 million, respectively, as a long-term asset. The Partnership includes any operating activities of Muskie in its Oil and Natural Gas segment for segment reporting purposes.

Prepaid_Expenses_And_Other_Cur1

Prepaid Expenses And Other Current Assets (Tables)	3 Months Ended
	Mar. 31, 2014
Prepaid Expenses And Other Current Assets [Abstract]	'
Schedule Of Prepaid Expenses And Other Current Assets	'
		March 31,	December 31,
		2014	2013
		(in thousands)
	Other prepaid expenses	$                      819	$                      951
	Prepaid insurance	1,005	1,958
	Prepaid leases	95	122
	Supply inventory	1,429	1,221
	Deposits	320	320
	Total Prepaid expenses and other	$                   3,668	$                   4,572

Property_Plant_And_Equipment_T

Property, Plant And Equipment (Tables)	3 Months Ended
	Mar. 31, 2014
Property, Plant And Equipment [Abstract]	'
Property, Plant And Equipment By Major Classification	'
		Useful Lives		31-Mar-14		31-Dec-13
				(in thousands)
	Land and land improvements			$         35,038		$         35,078
	Mining and other equipment and related facilities	2 - 20 Years		300,796		302,114
	Mine development costs	1 - 15 Years		76,709		73,344
	Coal properties	1 - 15 Years		238,213		238,975
	Oil and natural gas properties			8,093		8,093
	Construction work in process			32,149		17,104
	Total			690,998		674,708
	Less accumulated depreciation, depletion and amortization			-257,144		-249,718
	Net			$       433,854		$       424,990
Depreciation, Depletion, And Amortization	'
			Three Months Ended March 31,
			2014		2013
			(in thousands)
	Depreciation expense-mining and other equipment and related facilities		$              7,532		$              8,120
	Depletion expense for coal properties and oil and natural gas properties		1,194		1,275
	Amortization expense for mine development costs		424		671
	Amortization expense for intangible assets		21		21
	Amortization expense for asset retirement costs		61		5
	Total depreciation, depletion and amortization		$              9,232		$            10,092

Goodwill_And_Intangible_Assets1

Goodwill And Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2014
Goodwill And Intangible Assets [Abstract]	'
Schedule Of Intangible Assets By Major Class	'
	Intangible assets as of March 31, 2014 consisted of the following:
		Gross		Net
		Carrying	Accumulated	Carrying
	Intangible Asset	Amount	Amortization	Amount
		(in thousands)
	Patent	$              728	$              218	$              510
	Developed Technology	78	23	55
	Trade Name	184	26	158
	Customer List	470	66	404
	Total	$           1,460	$              333	$           1,127
	Intangible assets as of December 31, 2013 consisted of the following:
		Gross		Net
		Carrying	Accumulated	Carrying
	Intangible Asset	Amount	Amortization	Amount
		(in thousands)
	Patent	$              728	$              207	$              521
	Developed Technology	78	22	56
	Trade Name	184	23	161
	Customer List	470	60	410
	Total	$           1,460	$              312	$           1,148
Future Amortization Expense	'
			Developed		Customer
		Patent	Technology	Trade Name	List	Total
		(in thousands)
	2014 (from Apr 1 to Dec 31)	$                  32	$                    3	$                    7	$           18	$           60
	2015	43	5	9	23	80
	2016	43	5	9	23	80
	2017	43	5	9	23	80
	2018	43	5	9	23	80

Other_NonCurrent_Assets_Tables

Other Non-Current Assets (Tables)	3 Months Ended
	Mar. 31, 2014
Other Non-Current Assets [Abstract]	'
Schedule Of Other Non-Current Assets	'
		March 31,	December 31,
		2014	2013
		(in thousands)
	Deposits and other	$                  543	$               1,223
	Debt issuance costs—net	2,229	3,535
	Non-current receivable	4,327	4,327
	Note receivable	206	206
	Deferred expenses	341	349
	Total	$               7,646	$               9,640

Accrued_Expenses_And_Other_Cur1

Accrued Expenses And Other Current Liabilities (Tables)	3 Months Ended
	Mar. 31, 2014
Accrued Expenses And Other Current Liabilities [Abstract]	'
Schedule Of Accrued Expenses And Other Current Liabilities	'
		March 31,	December 31,
		2014	2013
		(in thousands)
	Payroll, bonus and vacation expense	$                3,024	$                3,573
	Non income taxes	4,285	2,750
	Royalty expenses	1,920	2,001
	Accrued interest	383	760
	Health claims	856	1,036
	Workers’ compensation & pneumoconiosis	1,190	1,190
	Deferred revenues	3,793	3,592
	Accrued insured litigation claims	1,418	2,579
	Other	933	3,086
	Total	$              17,802	$              20,567

Debt_Tables

Debt (Tables)	3 Months Ended
	Mar. 31, 2014
Debt [Abstract]	'
Schedule Of Debt	'
		March 31,	December 31,
		2014	2013
		(in thousands)
	Senior secured credit facility with PNC Bank, N.A.	$                4,230	$            167,040
	Note payable to H&L Construction Co., Inc.	603	800
	Other notes payable	3,150	3,206
	Total	7,983	171,046
	Less current portion	-821	-1,024
	Long-term debt	$                7,162	$            170,022

Asset_Retirement_Obligations_T

Asset Retirement Obligations (Tables)	3 Months Ended
	Mar. 31, 2014
Asset Retirement Obligations [Abstract]	'
Schedule Of Asset Retirement Obligations	'
		31-Mar-14	31-Dec-13
		(in thousands)
	Balance at beginning of period (including current portion)	$                            34,451	$                            32,962
	Accretion expense	589	2,356
	Adjustment resulting from disposal of property	-	-
	Adjustments to the liability from annual recosting and other	-	61
	Liabilities settled	-327	-928
	Balance at end of period	34,713	34,451
	Less current portion of asset retirement obligation	-2,220	-1,614
	Long-term portion of asset retirement obligation	$                            32,493	$                      32,837

Employee_Benefits_Tables

Employee Benefits (Tables)	3 Months Ended
	Mar. 31, 2014
Employee Benefits [Abstract]	'
Components Of Net Periodic Benefit Cost	'
		Three months ended March 31,
		2014	2013
		(in thousands)
	Service costs	$                  74	$                  96
	Interest cost	59	46
	Amortization of (gain)	-92	-36
	Total	$                  41	$                106
Schedule Of Expense Under Defined Contribution Savings Plans	'
		Three months ended March 31,
		2014	2013
		(in thousands)
	401(k) plan expense	$                568	$                580

Commitments_And_Contingencies_

Commitments And Contingencies (Tables)	3 Months Ended
	Mar. 31, 2014
Commitments And Contingencies [Abstract]	'
Schedule Of Delivery Commitments	'
	Year	Tons (in thousands)	Number of customers
	2014 Q2-Q4	2,368	20
	2015	1,796	4
	2016	1,100	2
	2017	1,100	2
Schedule Of Purchased Coal Expenses	'
		Three months ended March 31,
		2014	2013
		(in thousands)
	Purchased coal expense	$              1,850	$                 972
Schedule Of Lease And Royalty Expense	'
		Three months ended March 31,
		2014	2013
		(in thousands)
	Lease expense	$                799	$                867
	Royalty expense	$             2,760	$             2,908

Earnings_Per_Unit_EPU_Tables

Earnings Per Unit ("EPU") (Tables)	3 Months Ended
	Mar. 31, 2014
Earnings Per Unit ("EPU") [Abstract]	'
Schedule Of Calculation Of Numerator And Denominator In Earnings Per Share	'
	Three months ended March 31, 2014	General Partner	Common Unitholders	Subordinated Unitholders
	Numerator:	(in thousands, except per unit data)
	Interest in net (loss)/income:
	Net (loss) from continuing operations	$              (99)	$              (2,795)	$                (2,072)
	Net income from discontinued operations	2,610	73,343	54,558
	Total interest in net income	$           2,511	$              70,548	$               52,486
	Denominator:
	Weighted average units used to compute basic EPU	n/a	16,667	12,397
	Effect of dilutive securities — LTIP awards:
	Dilutive securities for net (loss) from continuing operations	n/a	-	-
	Dilutive securities for net income from discontinued operations	n/a	6	-
	Total dilutive securities	n/a	6	-
	Weighted average units used to compute diluted EPU	n/a	16,673	12,397
	Net (loss)/income per limited partner unit, basic
	Net (loss) per unit from continuing operations	n/a	$                (0.17)	$                  (0.17)
	Net income per unit from discontinued operations	n/a	4.40	4.40
	Net income per common unit, basic	n/a	$                  4.23	$                   4.23
	Net (loss)/income per limited partner unit, diluted
	Net (loss) per unit from continuing operations	n/a	$                (0.17)	$                  (0.17)
	Net income per unit from discontinued operations	n/a	4.40	4.40
	Net income per common unit, diluted	n/a	$                  4.23	$                   4.23
	Three months ended March 31, 2013	General Partner	Common Unitholders	Subordinated Unitholders
	Numerator:	(in thousands, except per unit data)
	Interest in net (loss)/income:
	Net (loss) from continuing operations	$                (6)	$                (152)	$                  (113)
	Net income from discontinued operations	2	51	41
	Total interest in net (loss)	$                (4)	$                (101)	$                    (72)
	Denominator:
	Weighted average units used to compute basic EPU	n/a	15,354	12,397
	Effect of dilutive securities — LTIP awards:
	Dilutive securities for net (loss) from continuing operations	n/a	-	-
	Dilutive securities for net income from discontinued operations	n/a	-	-
	Total dilutive securities	n/a	-	-
	Weighted average units used to compute diluted EPU	n/a	15,354	12,397
	Net (loss)/income per limited partner unit, basic
	Net (loss) per unit from continuing operations	n/a	$               (0.01)	$                 (0.01)
	Net income per unit from discontinued operations	n/a	-	-
	Net (loss) per common unit, basic	n/a	$               (0.01)	$                 (0.01)
	Net (loss)/income per limited partner unit, diluted
	Net (loss) per unit from continuing operations	n/a	$               (0.01)	$                 (0.01)
	Net income per unit from discontinued operations	n/a	-	-
	Net (loss) per common unit, diluted	n/a	$               (0.01)	$                 (0.01)

Major_Customers_Tables

Major Customers (Tables)	3 Months Ended
	Mar. 31, 2014
Major Customers [Abstract]	'
Major Customers	'
		31-Mar	Three months	Three months
		2014	ended	ended
		Receivable	31-Mar	31-Mar
		Balance	2014 Sales	2013 Sales
		(in thousands)
	NRG Energy, Inc. (fka GenOn Energy, Inc.)	$                   1,040	$                   6,820	$                 12,431
	Indiana Harbor Coke Company, L.P	n/a	n/a	7,981
	American Electric Power Company, Inc.	n/a	n/a	9,598

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2014
Segment Information [Abstract]	'
Reportable Segment Results Of Operations	'
	Reportable segment results of operations for the three months ended March 31, 2014 are as follows (Note: “DD&A” refers to depreciation, depletion and amortization):
					Eastern Met
						Equity	Equity
		Central	Northern	Rhino	Complete	Method	Method		Total
		Appalachia	Appalachia	Western	Basis	Eliminations	Presentation	Other	Consolidated
		(in thousands)
	Total revenues	$       30,561	$       18,764	$      9,586	$       7,529	$          (7,529)	$                   -	$      1,031	$         59,942
	DD&A	5,402	1,878	1,418	500	-500	-	534	9,232
	Interest expense	1,053	177	150	15	-15	-	1,804	3,184
	Net Income (loss) from continuing operations	$       (3,818)	$         1,104	$        (346)	$      (1,717)	$              841	$             (876)	$     (1,030)	$          (4,966)
	Reportable segment results of operations for the three months ended March 31, 2013 are as follows:
					Eastern Met
						Equity	Equity
		Central	Northern	Rhino	Complete	Method	Method		Total
		Appalachia	Appalachia	Western	Basis	Eliminations	Presentation	Other	Consolidated
		(in thousands)
	Total revenues	$       41,942	$       21,867	$      9,597	$       6,168	$          (6,168)	$                   -	$      1,061	$         74,467
	DD&A	6,266	2,052	1,350	475	-475	-	424	10,092
	Interest expense	972	190	159	-	-	-	533	1,854
	Net Income (loss) from continuing operations	$       (2,204)	$         4,623	$        (103)	$      (2,397)	$           1,174	$          (1,223)	$     (1,364)	$             (271)
Equity Method Investments, Summarized Financial Information	'
		Three months ended March 31,
		2014		2013
		(in thousands)
	Total costs and expenses	$              9,231		$              8,566
	(Loss) from operations	-1,702		-2,398

Organization_And_Basis_Of_Pres1

Organization And Basis Of Presentation (Details) (USD $)	0 Months Ended	3 Months Ended
	Sep. 13, 2013	Mar. 31, 2014	Mar. 31, 2013
Basis Of Presentation And Organization [Line Items]	'	'	'
Limited partnership common units issued	1,265,000	'	'
Limited partnership common units price	$12.30	'	'
Proceeds from issuance of common units	$14,600,000	'	'
Underwriting discounts and offering expenses	1,000,000	'	'
Partner contributions	300,000	3,000	2,000
Repayments of credit facility	$14,900,000	'	'
Underwriters Option To Purchase Additional Units [Member]	'	'	'
Basis Of Presentation And Organization [Line Items]	'	'	'
Limited partnership common units issued	165,000	'	'

Summary_Of_Significant_Account2

Summary Of Significant Accounting Policies And General (Details) (USD $)	3 Months Ended		1 Months Ended	3 Months Ended		1 Months Ended		3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	31-May-08	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2012	Dec. 31, 2012	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
			Rhino Eastern LLC [Member]	Rhino Eastern LLC [Member]	Rhino Eastern LLC [Member]	Timber Wolf [Member]	Muskie Proppant [Member]	Muskie Proppant [Member]	Muskie Proppant [Member]	Muskie Proppant [Member]
Summary Of Significant Accounting Policies [Line Items]	'	'	'	'	'	'	'	'	'	'
Payments to acquire interest in joint venture	'	'	$16,100,000	$1,000,000	'	$100,000	$2,000,000	$200,000	'	'
Equity method investment	'	'	'	19,500,000	19,400,000	'	'	2,000,000	'	1,800,000
Ownership interest in joint venture	'	'	51.00%	'	'	'	'	'	'	'
Loss from operations	868,000	-2,955,000	'	'	'	'	'	42,000	150,000	'
Loans to joint venture	'	'	'	'	'	'	'	200,000	'	'
Equity in net income (loss) of unconsolidated affiliate	($917,000)	($1,372,000)	'	'	'	'	'	'	'	'

Discontinued_Operations_Detail

Discontinued Operations (Details) (USD $)	3 Months Ended		1 Months Ended	3 Months Ended	1 Months Ended	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Jan. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Sep. 30, 2012	Dec. 31, 2011
			Blackhawk Midstream, LLC [Member]	Blackhawk Midstream, LLC [Member]	Utica Shale Region Of Ohio [Member]	Utica Shale Region Of Ohio [Member]	Utica Shale Region Of Ohio [Member]	Utica Shale Region Of Ohio [Member]	Utica Shale Region Of Ohio [Member]	Utica Shale Region Of Ohio [Member]
			item					acre	acre	acre
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'	'	'	'	'	'	'
Ownership percentage	'	'	'	'	'	'	'	5.00%	5.00%	10.80%
Gross acreage	'	'	'	'	'	'	'	152,300	125,000	80,000
Net acreage	'	'	'	'	'	'	'	7,615	6,250	'
Cumulative investment in pro rata interest in oil and gas leases	'	'	'	'	'	'	'	$31,100,000	'	'
Drilling costs	'	'	'	'	'	'	'	23,300,000	'	'
Revenues	59,942,000	74,467,000	'	'	'	'	300,000	'	'	'
Pre-tax profit from discontinued operations	'	'	'	'	'	'	100,000	'	'	'
Purchase price	'	'	'	'	184,000,000	184,000,000	'	'	'	'
Proceeds from the sale of property	'	'	'	'	179,000,000	'	'	'	'	'
Purchase price receivable	'	'	'	'	5,000,000	5,000,000	'	'	'	'
Gain on sale of property	'	'	'	'	'	121,700,000	'	'	'	'
Proceeds from the sale of interest	'	'	8,400,000	'	'	'	'	'	'	'
Number of equity interests sold	'	'	2	'	'	'	'	'	'	'
Percentage of payout interest	'	'	5.00%	'	'	'	'	'	'	'
Income from discontinued operations	$130,511,000	$94,000	'	$8,400,000	'	'	'	'	'	'

Prepaid_Expenses_And_Other_Cur2

Prepaid Expenses And Other Current Assets (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Prepaid Expenses And Other Current Assets [Abstract]	'	'
Other prepaid expenses	$819	$951
Prepaid insurance	1,005	1,958
Prepaid leases	95	122
Supply inventory	1,429	1,221
Deposits	320	320
Total prepaid expenses and other	$3,668	$4,572

Property_Plant_And_Equipment_N

Property, Plant And Equipment (Narrative) (Details) (USD $)	1 Months Ended	3 Months Ended		12 Months Ended	15 Months Ended
In Millions, unless otherwise specified	31-May-12	Dec. 31, 2013	Sep. 30, 2012	Dec. 31, 2013	Dec. 31, 2013	Mar. 31, 2014
				T
McClane Canyon, Colorado [Member]	'	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'	'
Asset impairment loss	'	'	'	1.7	'	'
Daviess And McLean Counties, Kentucky [Member]	'	'	'	'	'	'
Property, Plant and Equipment [Line Items]	'	'	'	'	'	'
Acquisition of mineral rights	1.5	0.4	1.6	'	2	'
Potential payment not recorded as currently not probable	'	'	'	'	'	$1
Coal tonnage	'	'	'	32,600,000	'	'

Property_Plant_And_Equipment_P

Property, Plant And Equipment (Property, Plant And Equipment By Major Classification) (Details) (USD $)

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

In Thousands, unless otherwise specified

Land And Land Improvements [Member]

Land And Land Improvements [Member]

Mining And Other Equipment And Related Facilities [Member]

Mining And Other Equipment And Related Facilities [Member]

Mine Development Costs [Member]

Mine Development Costs [Member]

Coal Properties [Member]

Coal Properties [Member]

Oil And Natural Gas Properties [Member]

Oil And Natural Gas Properties [Member]

Construction Work In Process [Member]

Construction Work In Process [Member]

Minimum [Member]

Minimum [Member]

Minimum [Member]

Maximum [Member]

Maximum [Member]

Maximum [Member]

Mining And Other Equipment And Related Facilities [Member]

Mine Development Costs [Member]

Coal Properties [Member]

Mining And Other Equipment And Related Facilities [Member]

Mine Development Costs [Member]

Coal Properties [Member]

Property, Plant and Equipment [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Useful Lives

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'2 years

'1 year

'1 year

'20 years

'15 years

'15 years

Total

$690,998

$674,708

$35,038

$35,078

$300,796

$302,114

$76,709

$73,344

$238,213

$238,975

$8,093

$8,093

$32,149

$17,104

'

'

'

'

'

'

Less accumulated depreciation, depletion and amortization

-257,144

-249,718

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net

$433,854

$424,990

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property_Plant_And_Equipment_D

Property, Plant And Equipment (Depreciation, Depletion And Amortization) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Property, Plant and Equipment [Line Items]	'	'
Depreciation, depletion and amortization	$9,232	$10,092
Mining And Other Equipment And Related Facilities [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Depreciation, depletion and amortization	7,532	8,120
Coal Properties And Oil And Natural Gas Properties [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Depreciation, depletion and amortization	1,194	1,275
Mine Development Costs [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Depreciation, depletion and amortization	424	671
Intangible Assets [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Depreciation, depletion and amortization	21	21
Asset Retirement Costs [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Depreciation, depletion and amortization	$61	$5

Goodwill_And_Intangible_Assets2

Goodwill And Intangible Assets (Narrative) (Details)	3 Months Ended
	Mar. 31, 2014
Patent And Developed Technology [Member]	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
Intangible assets, useful life	'17 years
Trade Name And Customer List [Member]	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
Intangible assets, useful life	'20 years

Goodwill_And_Intangible_Assets3

Goodwill And Intangible Assets (Schedule Of Intangible Assets By Major Class) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	$1,460	$1,460
Accumulated Amortization	333	312
Net Carrying Amount	1,127	1,148
Patent [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	728	728
Accumulated Amortization	218	207
Net Carrying Amount	510	521
Developed Technology [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	78	78
Accumulated Amortization	23	22
Net Carrying Amount	55	56
Trade Name [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	184	184
Accumulated Amortization	26	23
Net Carrying Amount	158	161
Customer List [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Gross Carrying Amount	470	470
Accumulated Amortization	66	60
Net Carrying Amount	$404	$410

Goodwill_And_Intangible_Assets4

Goodwill And Intangible Assets (Future Amortization Expense) (Details) (USD $)	Mar. 31, 2014
In Thousands, unless otherwise specified
Acquired Finite-Lived Intangible Assets [Line Items]	'
2014 (from Apr 1 to Dec 31)	$60
2015	80
2016	80
2017	80
2018	80
Patent [Member]	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
2014 (from Apr 1 to Dec 31)	32
2015	43
2016	43
2017	43
2018	43
Developed Technology [Member]	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
2014 (from Apr 1 to Dec 31)	3
2015	5
2016	5
2017	5
2018	5
Trade Name [Member]	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
2014 (from Apr 1 to Dec 31)	7
2015	9
2016	9
2017	9
2018	9
Customer List [Member]	'
Acquired Finite-Lived Intangible Assets [Line Items]	'
2014 (from Apr 1 to Dec 31)	18
2015	23
2016	23
2017	23
2018	$23

Other_NonCurrent_Assets_Narrat

Other Non-Current Assets (Narrative) (Details) (USD $)	3 Months Ended		1 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014
			PNC Bank, N.A. [Member]
			Second Amendment [Member]
Other Non-Current Assets [Line Items]	'	'	'
Debt issuance costs, gross	$9,100,000	$9,000,000	'
Accumulated amortization of debt issuance costs	6,900,000	5,500,000	'
Credit facility, maximum available	'	'	200,000,000
Amendment fee	'	'	100,000
Unamortized debt issuance costs written off	1,100,000	'	1,100,000
Workers' compensation insurance receivable	$4,327,000	$4,327,000	'

Other_NonCurrent_Assets_Schedu

Other Non-Current Assets (Schedule Of Other Non-Current Assets) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Other Non-Current Assets [Abstract]	'	'
Deposits and other	$543	$1,223
Debt issuance costs-net	2,229	3,535
Non-current receivable	4,327	4,327
Note receivable	206	206
Deferred expenses	341	349
Total	$7,646	$9,640

Accrued_Expenses_And_Other_Cur2

Accrued Expenses And Other Current Liabilities (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Accrued Expenses And Other Current Liabilities [Abstract]	'	'
Payroll, bonus and vacation expense	$3,024	$3,573
Non income taxes	4,285	2,750
Royalty expenses	1,920	2,001
Accrued interest	383	760
Health claims	856	1,036
Workers' compensation & pneumoconiosis	1,190	1,190
Deferred revenues	3,793	3,592
Accrued insured litigation claims	1,418	2,579
Other	933	3,086
Total	$17,802	$20,567

Debt_Senior_Secured_Credit_Fac

Debt (Senior Secured Credit Facility With PNC Bank, N.A.) (Narrative) (Details) (USD $)

3 Months Ended

3 Months Ended

3 Months Ended

1 Months Ended

3 Months Ended

1 Months Ended

9 Months Ended

24 Months Ended

3 Months Ended

12 Months Ended

21 Months Ended

1 Months Ended

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2014

Apr. 30, 2013

Mar. 31, 2014

Jul. 31, 2011

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Jul. 31, 2011

Dec. 31, 2015

Mar. 31, 2015

Dec. 31, 2015

Dec. 31, 2016

Sep. 30, 2015

Mar. 31, 2014

PNC Bank, N.A. [Member]

PNC Bank, N.A. Amendment [Member]

PNC Bank, N.A. Amendment [Member]

Credit Facility LIBOR Plus Applicable Spread [Member]

Amended And Restated [Member]

Amended And Restated [Member]

Second Amendment [Member]

Letters of Credit [Member]

Letters of Credit [Member]

Forecast [Member]

Forecast [Member]

Forecast [Member]

Forecast [Member]

Forecast [Member]

Utica Shale Region Of Ohio [Member]

PNC Bank, N.A. [Member]

PNC Bank, N.A. [Member]

PNC Bank, N.A. [Member]

PNC Bank, N.A. [Member]

PNC Bank, N.A. [Member]

PNC Bank, N.A. [Member]

PNC Bank, N.A. Amendment [Member]

PNC Bank, N.A. Amendment [Member]

Second Amendment [Member]

Second Amendment [Member]

Second Amendment [Member]

PNC Bank, N.A. [Member]

PNC Bank, N.A. [Member]

PNC Bank, N.A. [Member]

Line of Credit Facility [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Credit facility, maximum available

'

'

'

'

'

'

$300,000,000

'

$200,000,000

'

$75,000,000

'

'

'

'

'

'

Amendment fee

'

'

'

'

1,000,000

'

'

'

100,000

'

'

'

'

'

'

'

'

Line of credit facility option to increase maximum borrowing capacity

'

'

'

'

'

'

50,000,000

'

'

'

'

'

'

'

'

'

'

Line of credit facility, expiration date

'

'

'

'

'

'

'

1-Jul-16

'

'

'

'

'

'

'

'

'

Line of credit facility, maximum investment in joint ventures

'

'

25,000,000

40,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of credit facility, maximum leverage ratio

'

'

'

'

'

'

'

'

'

'

'

3.00%

3.75%

3.25%

3.00%

3.50%

'

Line of credit facility, maximum investment in hydrocarbons and related assets

'

'

'

'

'

'

'

'

50,000,000

'

'

'

'

'

'

'

'

Line of credit facility, amount outstanding

4,230,000

167,040,000

'

'

'

4,200,000

'

'

'

'

'

'

'

'

'

'

'

Unamortized debt issuance costs written off

1,100,000

'

'

'

'

'

'

'

1,100,000

'

'

'

'

'

'

'

'

Purchase price

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

184,000,000

Proceeds from the sale of property

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

179,000,000

Incremental interest rate above variable rate

'

'

'

'

'

3.00%

'

'

'

'

'

'

'

'

'

'

'

Effective interest rate

5.00%

'

'

'

'

3.16%

'

'

'

'

'

'

'

'

'

'

'

Outstanding letters of credit

'

'

'

'

'

'

'

'

'

20,300,000

'

'

'

'

'

'

'

Fixed interest rate

'

'

'

'

'

'

'

'

'

3.00%

'

'

'

'

'

'

'

Maximum borrowing capacity measured as a multiple of EBITDA

'

'

350.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

EBITDA measurement period for determining maximum borrowing capacity

'

'

'12 months

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of credit facility, remaining borrowing capacity

'

'

$171,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt_Note_Payable_To_HL_Constr

Debt (Note Payable To H&L Construction) (Narrative) (Details) (USD $)	3 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Debt [Abstract]	'	'
Imputed interest discount rate	5.00%	'
Note payable maturity date	1-Jan-15	'
Mineral rights owned and pledged as collateral, carrying amount	$11	$11.10

Debt_Schedule_Of_Debt_Details

Debt (Schedule Of Debt) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt [Abstract]	'	'
Senior secured credit facility with PNC Bank, N.A.	$4,230	$167,040
Notes payable to H&L Construction Co., Inc.	603	800
Other notes payable	3,150	3,206
Total	7,983	171,046
Less current portion	-821	-1,024
Long-term debt	$7,162	$170,022

Asset_Retirement_Obligations_D

Asset Retirement Obligations (Details) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Asset Retirement Obligations [Abstract]	'	'	'
Balance at beginning of period (including current portion)	$34,451	$32,962	$32,962
Accretion expense	589	589	2,356
Adjustments to liability from annual recosting and other	'	'	61
Liabilities settled	-327	'	-928
Balance at end of period	34,713	'	34,451
Less current portion of asset retirement obligation	-2,220	'	-1,614
Long-term portion of asset retirement obligation	$32,493	'	$32,837

Employee_Benefits_Components_O

Employee Benefits (Components Of Net Periodic Benefit Cost) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Employee Benefits [Abstract]	'	'
Service costs	$74	$96
Interest cost	59	46
Amortization of (gain)	-92	-36
Total	$41	$106

Employee_Benefits_Schedule_Of_

Employee Benefits (Schedule Of Expense Under Defined Contribution Savings Plans) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Employee Benefits [Abstract]	'	'
401(k) plan expense	$568	$580

EquityBased_Compensation_Detai

Equity-Based Compensation (Details) (USD $)	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2014
Equity-Based Compensation [Abstract]	'
Phantom units granted	29,657
Vesting period	'3 years
Total fair value of awards granted	$0.40

Commitments_And_Contingencies_1

Commitments And Contingencies (Narrative) (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Dec. 31, 2012	Mar. 31, 2014	Dec. 31, 2012	Dec. 31, 2013
			Diesel Fuel [Member]	Ammonia Nitrate [Member]	Rhino Eastern [Member]	Timber Wolf [Member]	Muskie Proppant [Member]	Muskie Proppant [Member]	Muskie Proppant [Member]
			gal	T
Commitments And Contingencies [Line Items]	'	'	'	'	'	'	'	'	'
Fuel purchase commitments, gallons	'	'	400,000	'	'	'	'	'	'
Purchase commitment, tons	'	'	'	1,800	'	'	'	'	'
Purchase commitments	'	'	$1,400,000	$800,000	'	'	'	'	'
Long-term debt	7,983,000	171,046,000	'	'	'	'	'	'	'
Payments to acquire interest in joint venture	'	'	'	'	1,000,000	100,000	200,000	2,000,000	500,000
Loans to joint venture	'	'	'	'	'	'	$200,000	'	'

Commitments_And_Contingencies_2

Commitments And Contingencies (Schedule Of Delivery Commitments) (Details)	3 Months Ended
	Mar. 31, 2014
	customer
	T
Commitments And Contingencies [Abstract]	'
Tons, 2014	2,368,000
Tons, 2015	1,796,000
Tons, 2016	1,100,000
Tons 2017	1,100,000
Number of customers, 2014	20
Number of customers, 2015	4
Number of customers, 2016	2
Number of customers, 2017	2

Commitments_And_Contingencies_3

Commitments And Contingencies (Schedule Of Purchased Coal Expenses) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Commitments And Contingencies [Abstract]	'	'
Purchased coal expense	$1,850	$972

Commitments_And_Contingencies_4

Commitments And Contingencies (Schedule Of Lease And Royalty Expense) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Commitments And Contingencies [Abstract]	'	'
Lease expense	$799	$867
Royalty expense	$2,760	$2,908

Earnings_Per_Unit_EPU_Narrativ

Earnings Per Unit ("EPU") (Narrative) (Details)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Unit ("EPU") [Abstract]	'	'
Anti-dilutive LTIP phantom units	6,000	0

Earnings_Per_Unit_EPU_Schedule

Earnings Per Unit ("EPU") (Schedule Of Calculation Of Numerator And Denominator In Earnings Per Share) (Details) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Unit [Line Items]	'	'
Net (loss) from continuing operations	($4,966)	($271)
Net income from discontinued operations	130,511	94
Total interest in net income (loss)	125,545	-177
General Partner [Member]	'	'
Earnings Per Unit [Line Items]	'	'
Net (loss) from continuing operations	-99	-6
Net income from discontinued operations	2,610	2
Total interest in net income (loss)	2,511	-4
Common Unitholders [Member]	'	'
Earnings Per Unit [Line Items]	'	'
Net (loss) from continuing operations	-2,795	-152
Net income from discontinued operations	73,343	51
Total interest in net income (loss)	70,548	-101
Weighted average units used to compute basic EPU	16,667	15,354
Dilutive securities for net income from discontinued operations	6	'
Total dilutive securities	6	'
Weighted average units used to compute diluted EPU	16,673	15,354
Net (loss) per unit from continuing operations	($0.17)	($0.01)
Net income per unit from discontinued operations	$4.40	'
Net (loss) per common unit, basic	$4.23	($0.01)
Net (loss) per unit from continuing operations	($0.17)	($0.01)
Net income per unit from discontinued operations	$4.40	'
Net income per common unit, diluted	$4.23	($0.01)
Subordinated Unitholders[Member]	'	'
Earnings Per Unit [Line Items]	'	'
Net (loss) from continuing operations	-2,072	-113
Net income from discontinued operations	54,558	41
Total interest in net income (loss)	$52,486	($72)
Weighted average units used to compute basic EPU	12,397	12,397
Weighted average units used to compute diluted EPU	12,397	12,397
Net (loss) per unit from continuing operations	($0.17)	($0.01)
Net income per unit from discontinued operations	$4.40	'
Net (loss) per common unit, basic	$4.23	($0.01)
Net (loss) per unit from continuing operations	($0.17)	($0.01)
Net income per unit from discontinued operations	$4.40	'
Net income per common unit, diluted	$4.23	($0.01)

Major_Customers_Details

Major Customers (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Revenue, Major Customer [Line Items]	'	'	'
Receivable balance	$24,034,000	'	$25,461,000
Revenue	59,942,000	74,467,000	'
NRG Energy, Inc. (fka GenOn Energy, Inc.) [Member]	'	'	'
Revenue, Major Customer [Line Items]	'	'	'
Receivable balance	1,040,000	'	'
Revenue	6,820,000	12,431,000	'
American Electric Power Company, Inc. [Member]	'	'	'
Revenue, Major Customer [Line Items]	'	'	'
Revenue	'	9,598,000	'
Indiana Harbor Coke Company, L.P. [Member]	'	'	'
Revenue, Major Customer [Line Items]	'	'	'
Revenue	'	$7,981,000	'

Supplemental_Disclosures_Of_Ca1

Supplemental Disclosures Of Cash Flow Information (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Units Issued [Member]	'	'
Other Significant Noncash Transactions [Line Items]	'	'
Value of units issued	$0.20	$0.10
Recorded In Accounts Payable [Member]	'	'
Other Significant Noncash Transactions [Line Items]	'	'
Property additions	$3	$2.70

Segment_Information_Narrative_

Segment Information (Narrative) (Details)	3 Months Ended
	Mar. 31, 2014
	segment
Segment Information [Abstract]	'
Number of reportable business segments	4

Segment_Information_Reportable

Segment Information (Reportable Segment Results Of Operations) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]	'	'	'
Total assets	$515,848,000	'	$567,767,000
Total revenues	59,942,000	74,467,000	'
DD&A	9,232,000	10,092,000	'
Interest expense	3,184,000	1,854,000	'
Net Income (loss) from continuing operations	-4,966,000	-271,000	'
Central Appalachia [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Total revenues	30,561,000	41,942,000	'
DD&A	5,402,000	6,266,000	'
Interest expense	1,053,000	972,000	'
Net Income (loss) from continuing operations	-3,818,000	-2,204,000	'
Northern Appalachia [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Total revenues	18,764,000	21,867,000	'
DD&A	1,878,000	2,052,000	'
Interest expense	177,000	190,000	'
Net Income (loss) from continuing operations	1,104,000	4,623,000	'
Rhino Western [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Total revenues	9,586,000	9,597,000	'
DD&A	1,418,000	1,350,000	'
Interest expense	150,000	159,000	'
Net Income (loss) from continuing operations	-346,000	-103,000	'
Complete Basis [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Total revenues	'	6,168,000	'
DD&A	'	475,000	'
Net Income (loss) from continuing operations	'	-2,397,000	'
Complete Basis [Member] | Eastern Met [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Total revenues	7,529,000	'	'
DD&A	500,000	'	'
Interest expense	15,000	'	'
Net Income (loss) from continuing operations	-1,717,000	'	'
Equity Method Eliminations [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Total revenues	'	-6,168,000	'
DD&A	'	-475,000	'
Net Income (loss) from continuing operations	'	1,174,000	'
Equity Method Eliminations [Member] | Eastern Met [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Total revenues	-7,529,000	'	'
DD&A	-500,000	'	'
Interest expense	-15,000	'	'
Net Income (loss) from continuing operations	841,000	'	'
Equity Method Presentation [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Net Income (loss) from continuing operations	'	-1,223,000	'
Equity Method Presentation [Member] | Eastern Met [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Net Income (loss) from continuing operations	-876,000	'	'
Other [Member]	'	'	'
Segment Reporting Information [Line Items]	'	'	'
Total revenues	1,031,000	1,061,000	'
DD&A	534,000	424,000	'
Interest expense	1,804,000	533,000	'
Net Income (loss) from continuing operations	($1,030,000)	($1,364,000)	'

Segment_Information_Equity_Met

Segment Information (Equity Method Investments, Summarized Financial Information) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Segment Information [Abstract]	'	'
Total costs and expenses	$9,231	$8,566
(Loss) from operations	($1,702)	($2,398)

Subsequent_Events_Details

Subsequent Events (Details) (USD $)	3 Months Ended						0 Months Ended		3 Months Ended	0 Months Ended
	Mar. 31, 2014		Mar. 31, 2013		Mar. 31, 2014	Mar. 31, 2013	Apr. 21, 2014	Apr. 21, 2014	Mar. 31, 2014	Apr. 21, 2014
					Subordinated Units [Member]	Subordinated Units [Member]	Subsequent Event [Member]	Subsequent Event [Member]	Subsequent Event [Member]	Subsequent Event [Member]
								Common Units [Member]	Common Units [Member]	Subordinated Units [Member]
Subsequent Event [Line Items]	'		'		'	'	'	'	'	'
Cash distribution, date declared	'		'		'	'	21-Apr-14	'	'	'
Cash distribution	$0.45	[1]	$0.45	[1]	$0	$0	'	$0.45	'	$0
Cash distribution, annualized	'		'		'	'	'	$1.78	'	'
Cash distribution, date of distribution	'		'		'	'	'	'	15-May-14	'
Cash distribution, date of record	'		'		'	'	'	'	1-May-14	'
[1]	No distributions were paid on the subordinated units for the three months ended March 31, 2014 and 2013