Rhino Resource Partners 10-Q 11 Aug 16 2016 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2016	Aug. 08, 2016
Entity Registrant Name	Rhino Resource Partners LP
Entity Central Index Key	1,490,630
Document Type	10-Q
Document Period End Date	Jun. 30, 2016
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Trading Symbol	RHNO
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2,016
Common Stock [Member]
Entity Common Stock, Shares Outstanding		7,905,799
Subordinated Units [Member]
Entity Common Stock, Shares Outstanding		1,235,534

Condensed Consolidated Statemen

Condensed Consolidated Statements of Financial Position (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
CURRENT ASSETS:
Cash and cash equivalents	$ 15	$ 78
Accounts receivable, net of allowance for doubtful accounts ($166 as of June 30, 2016 and $166 as of December 31, 2015)	13,234	14,569
Inventories	7,859	8,570
Advance royalties, current portion	849	753
Prepaid expenses and other	4,145	5,474
Total current assets	26,102	29,444
PROPERTY, PLANT AND EQUIPMENT:
At cost, including coal properties, mine development and construction costs	476,932	604,514
Less accumulated depreciation, depletion and amortization	(270,038)	(271,007)
Net property, plant and equipment	206,894	333,507
Advance royalties, net of current portion	7,708	7,326
Investment in unconsolidated affiliates	7,473	7,578
Intangible assets	489	505
Other non-current assets	28,915	26,307
TOTAL	277,581	404,667
CURRENT LIABILITIES:
Accounts payable	11,537	9,336
Accrued expenses and other	12,223	14,102
Current portion of long-term debt	288	41,479
Current portion of asset retirement obligations	1,646	767
Current portion of postretirement benefits		45
Total current liabilities	25,694	65,729
NON-CURRENT LIABILITIES:
Long-term debt, net of current portion	40,225	2,595
Asset retirement obligations, net of current portion	22,722	22,980
Other non-current liabilities	43,468	45,435
Total non-current liabilities	106,415	71,010
Total liabilities	132,109	136,739
COMMITMENTS AND CONTINGENCIES (NOTE 13)
PARTNERS’ CAPITAL:
Limited partners	140,483	253,312
Subscription receivable from limited partners	(4,000)
General partner	8,989	9,821
Accumulated other comprehensive income		4,795
Total partners’ capital	145,472	267,928
TOTAL	$ 277,581	$ 404,667

Condensed Consolidated Stateme3

Condensed Consolidated Statements of Financial Position (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 166	$ 166

Condensed Consolidated Stateme4

Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
REVENUES:
Coal sales		$ 39,106	$ 48,469	$ 75,786	$ 94,025
Freight and handling revenues		581	668	1,210	1,207
Other revenues		3,053	7,628	6,173	17,717
Total revenues		42,740	56,765	83,169	112,949
COSTS AND EXPENSES:
Cost of operations (exclusive of depreciation, depletion and amortization shown separately below)		33,860	47,318	63,311	93,470
Freight and handling costs		516	670	1,066	1,205
Depreciation, depletion and amortization		5,931	8,596	12,178	17,448
Selling, general and administrative (exclusive of depreciation, depletion and amortization shown separately above)		3,986	4,913	8,040	9,329
Loss on asset impairments		118,705	2,179	118,705	2,179
(Gain)/loss on sale/disposal of assets—net		(25)	48	(295)	25
Total costs and expenses		162,973	63,724	203,005	123,656
(LOSS) FROM OPERATIONS		(120,233)	(6,959)	(119,836)	(10,707)
INTEREST AND OTHER (EXPENSE)/INCOME:
Interest expense		(1,725)	(1,313)	(3,299)	(2,270)
Interest income and other		31	36	64	38
Equity in net (loss)/income of unconsolidated affiliates		(26)	124	(105)	265
Total interest and other (expense)		(1,720)	(1,153)	(3,340)	(1,967)
NET (LOSS) BEFORE INCOME TAXES FROM CONTINUING OPERATIONS		(121,953)	(8,112)	(123,176)	(12,674)
INCOME TAXES
NET (LOSS) FROM CONTINUING OPERATIONS		(121,953)	(8,112)	(123,176)	(12,674)
DISCONTINUED OPERATIONS (NOTE 3)
Income from discontinued operations					722
NET (LOSS)		(121,953)	(8,112)	(123,176)	(11,952)
Other comprehensive income:
Amortization of actuarial gain under ASC Topic 715			(44)	(4,796)	(89)
COMPREHENSIVE (LOSS)		$ (121,953)	$ (8,156)	$ (127,972)	$ (12,041)
Net (loss)/income per limited partner unit, diluted:
Distributions paid per limited partner unit	[1]		$ 0.02		$ 0.07
General Partner [Member]
INTEREST AND OTHER (EXPENSE)/INCOME:
NET (LOSS) FROM CONTINUING OPERATIONS		$ (808)	$ (162)	$ (832)	$ (253)
DISCONTINUED OPERATIONS (NOTE 3)
Income from discontinued operations					14
NET (LOSS)		(808)	(162)	(832)	(239)
Common Unitholders [Member]
INTEREST AND OTHER (EXPENSE)/INCOME:
NET (LOSS) FROM CONTINUING OPERATIONS		(104,558)	(4,563)	(89,511)	(7,128)
DISCONTINUED OPERATIONS (NOTE 3)
Income from discontinued operations					406
NET (LOSS)		$ (104,558)	$ (4,563)	$ (89,511)	$ (6,722)
Net (loss)/income per limited partner unit, basic:
Net (loss) per unit from continuing operations		$ (13.42)	$ (2.73)	$ (26.57)	$ (4.18)
Net income per unit from discontinued operations					0.24
Net (loss)/income per common unit, basic		(13.42)	(2.73)	(26.57)	(3.94)
Net (loss)/income per limited partner unit, diluted:
Net (loss) per unit from continuing operations		(13.42)	(2.73)	(26.57)	(4.18)
Net income per unit from discontinued operations					0.24
Net (loss)/income per common unit, diluted		$ (13.42)	$ (2.73)	$ (26.57)	$ (3.94)
Weighted average number of limited partner units outstanding, basic:
Weighted average number of limited partner units outstanding, basic		7,788,000	1,670,000	3,368,000	1,669,000
Weighted average number of limited partner units outstanding, diluted:
Weighted average number of limited partner units outstanding, diluted		7,788,000	1,670,000	3,368,000	1,669,000
Subordinated Unitholders [Member]
INTEREST AND OTHER (EXPENSE)/INCOME:
NET (LOSS) FROM CONTINUING OPERATIONS		$ (16,587)	$ (3,387)	$ (32,833)	$ (5,293)
DISCONTINUED OPERATIONS (NOTE 3)
Income from discontinued operations					302
NET (LOSS)		$ (16,587)	$ (3,387)	$ (32,833)	$ (4,991)
Net (loss)/income per limited partner unit, basic:
Net (loss) per unit from continuing operations		$ (13.42)	$ (2.73)	$ (26.57)	$ (4.38)
Net income per unit from discontinued operations					0.24
Net (loss)/income per common unit, basic		(13.42)	(2.73)	(26.57)	(4.14)
Net (loss)/income per limited partner unit, diluted:
Net (loss) per unit from continuing operations		(13.42)	(2.73)	(26.57)	(4.38)
Net income per unit from discontinued operations					0.24
Net (loss)/income per common unit, diluted		$ (13.42)	$ (2.73)	$ (26.57)	$ (4.14)
Weighted average number of limited partner units outstanding, basic:
Weighted average number of limited partner units outstanding, basic		1,236,000	1,240,000	1,236,000	1,240,000
Weighted average number of limited partner units outstanding, diluted:
Weighted average number of limited partner units outstanding, diluted		1,236,000	1,240,000	1,236,000	1,240,000
[1]	No distributions were paid on the subordinated units for the three and six months ended June 30, 2016 and 2015

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) (Parenthetical) - $ / shares		3 Months Ended		6 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Distributions paid per limited partner unit	[1]		$ 0.02		$ 0.07
[1]	No distributions were paid on the subordinated units for the three and six months ended June 30, 2016 and 2015

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss)	$ (123,176)	$ (11,952)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	12,178	17,448
Accretion on asset retirement obligations	763	1,101
Accretion on interest-free debt		51
Amortization of deferred revenue	(718)	(1,673)
Amortization of advance royalties	570	398
Amortization of debt issuance costs	998	738
Amortization of actuarial gain	(4,796)	(89)
Provision for doubtful accounts		362
Equity in net loss/(income) of unconsolidated affiliates	105	(265)
Distributions from unconsolidated affiliate		232
Loss on retirement of advance royalties	140	28
Loss on asset impairments	118,705	2,179
(Gain) on sale/disposal of assets—net	(295)	(696)
Equity-based compensation	520	33
Changes in assets and liabilities:
Accounts receivable	1,371	2,309
Inventories	710	(2,528)
Advance royalties	(1,188)	(937)
Prepaid expenses and other assets	(697)	1,754
Accounts payable	1,676	1,505
Accrued expenses and other liabilities	(2,626)	1,444
Asset retirement obligations	(142)	(172)
Postretirement benefits	(45)	120
Net cash provided by operating activities	4,053	11,390
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to property, plant, and equipment	(4,362)	(7,843)
Proceeds from sales of property, plant, and equipment	341	1,094
Return of capital from unconsolidated affiliates		35
Net cash used in investing activities	(4,021)	(6,714)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings on line of credit	48,800	50,900
Repayments on line of credit	(52,250)	(52,750)
Repayments on long-term debt	(111)	(51)
Distributions to unitholders	(24)	(1,267)
General partner’s contributions		1
Payments on debt issuance costs	(1,510)	(2,062)
Limited partner contributions	5,000
Net cash used in financing activities	(95)	(5,229)
NET DECREASE IN CASH AND CASH EQUIVALENTS	(63)	(553)
CASH AND CASH EQUIVALENTS—Beginning of period	78	626
CASH AND CASH EQUIVALENTS—End of period	$ 15	$ 73

Basis of Presentation and Organ

Basis of Presentation and Organization	6 Months Ended
	Jun. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Organization	1. BASIS OF PRESENTATION AND ORGANIZATION Basis of Presentation and Principles of Consolidation Unaudited Interim Financial Information Organization On January 21, 2016, a definitive agreement (“Definitive Agreement”) was completed between Royal Energy Resources, Inc. (“Royal”) and Wexford Capital LP (“Wexford Capital”) whereby Royal acquired 6,769,112 issued and outstanding common units of the Partnership from Wexford Capital for $3.5 million. The Definitive Agreement also included the committed acquisition by Royal within sixty days from the date of the Definitive Agreement of all of the issued and outstanding membership interests of Rhino GP LLC, the general partner of the Partnership (the “General Partner”), as well as 9,455,252 issued and outstanding subordinated units of the Partnership from Wexford Capital for $1.0 million. On March 17, 2016, Royal completed the acquisition of all of the issued and outstanding membership interests of Rhino GP LLC as well as the 9,455,252 issued and outstanding subordinated units from Wexford Capital. Royal obtained control of, and a majority limited partner interest, in the Partnership with the completion of this transaction. On March 21, 2016, the Partnership and Royal entered into a securities purchase agreement (the “Securities Purchase Agreement”) pursuant to which the Partnership issued 60,000,000 common units in the Partnership to Royal in a private placement at $0.15 per common unit for an aggregate purchase price of $9.0 million. Royal paid the Partnership $2.0 million in cash and delivered a promissory note payable to the Partnership in the amount of $7.0 million. The promissory note is payable in three installments: (i) $3.0 million on July 31, 2016; (ii) $2.0 million on or before September 30, 2016 and (iii) $2.0 million on or before December 31, 2016. In the event the disinterested members of the board of directors of the General Partner determine that the Partnership does not need the capital that would be provided by either or both installments set forth in (ii) and (iii) above, in each case, the Partnership has the option to rescind Royal’s purchase of 13,333,333 common units and the applicable installment will not be payable (each, a “Rescission Right”). If the Partnership fails to exercise a Rescission Right, in each case, the Partnership has the option to repurchase 13,333,333 common units at $0.30 per common unit from Royal (each, a “Repurchase Option”). The Repurchase Options terminate on December 31, 2017. Royal’s obligation to pay any installment of the promissory note is subject to certain conditions, including that the Operating Company has entered into an agreement to extend the Amended and Restated Credit Agreement, as amended, to a date no sooner than December 31, 2017. In the event such conditions are not satisfied as of the date each installment is due, Royal has the right to cancel the remaining unpaid balance of the promissory note in exchange for the surrender of such number of common units equal to the principal balance of the promissory note divided by $0.15. On May 13, 2016, Royal paid the Partnership the $3.0 million promissory note installment that was due July 31, 2016. The payment was made in relation to the fifth amendment of the Amended and Restated Credit Agreement completed on May 13, 2016. See Note 9 for more information on the fifth amendment to the Amended and Restated Credit Agreement. On April 18, 2016, the Partnership completed a 1-for-10 reverse split on its common units and subordinated units. Pursuant to the reverse split, common unitholders received one common unit for every 10 common units owned on April 18, 2016 and subordinated unitholders received one subordinated unit for every 10 subordinated units owned on April 18, 2016. Any fractional units resulting from the reverse unit split were rounded to the nearest whole unit. The reverse unit split was intended to increase the market price per unit of Rhino’s common units in order to comply with the New York Stock Exchange’s (“NYSE”) continued listing standards. As previously reported, on December 17, 2015, the Partnership was notified by the NYSE that the NYSE had determined to commence proceedings to delist its common units from the NYSE as a result of the Partnership’s failure to comply with the continued listing standard set forth in Section 802.01B of the NYSE Listed Company Manual to maintain an average global market capitalization over a consecutive 30 trading-day period of at least $15 million. The NYSE also suspended the trading of the Partnership’s common units at the close of trading on December 17, 2015. On January 4, 2016, the Partnership filed an appeal with the NYSE to review the suspension and delisting determination of its common units. The NYSE held a hearing regarding the Partnership’s appeal on April 20, 2016 and affirmed its prior decision to delist the Partnership’s common units. On April 27, 2016, the NYSE filed with the SEC a notification of removal from listing and registration on Form 25 to delist the Partnership’s common units and terminate the registration of the Partnership’s common units under Section 12(b) of the Securities Exchange Act of 1934. The delisting became effective on May 9, 2016. The Partnership’s common units continued to trade on the OTCQB Marketplace under the ticker symbol “RHNOD” until May 16, 2016, at which time the OTCQB ticker symbol reverted to “RHNO.”

Summary of Significant Accounti

Summary of Significant Accounting Policies and General	6 Months Ended
	Jun. 30, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies and General	2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND GENERAL Investments in Unconsolidated Affiliates. 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 located in Central Appalachia. The Partnership accounted for the investment in the joint venture and its results of operations under the equity method. In January 2015, the Partnership completed a Membership Transfer Agreement (the “Transfer Agreement”) with an affiliate of Patriot that terminated the Rhino Eastern joint venture. Pursuant to the Transfer Agreement, Patriot sold and assigned its 49% membership interest in the Rhino Eastern joint venture to the Partnership and, in consideration of this transfer, Patriot received certain fixed assets, leased equipment and coal reserves associated with the mining area previously operated by the Rhino Eastern joint venture. Patriot also assumed substantially all of the active workforce related to the Eagle mining area that was previously employed by the Rhino Eastern joint venture. The Partnership retained approximately 34 million tons of coal reserves that are not related to the Eagle mining area as well as a prepaid advanced royalty balance. As part of the closing of the Transfer Agreement, the Partnership and Patriot agreed to a dissolution payment based upon a final working capital adjustment calculation as defined in the Transfer Agreement. Refer to Note 17 for information on the financial statement impact of the Rhino Eastern dissolution completed in January 2015. 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 accounted for the investment in the joint venture and results of operations under the equity method. In November 2014, the Partnership contributed its interest in Muskie to Mammoth Energy Partners LP (“Mammoth”), which is discussed below. In November 2014, the Partnership contributed its investment interest in Muskie to Mammoth in return for a limited partner interest in Mammoth. Mammoth was formed to own various companies that provide services to companies, which engage in the exploration and development of North American onshore unconventional oil and natural gas reserves. Mammoth’s companies provide services that include completion and production services, contract land and directional drilling services and remote accommodation services. The non-cash transaction was a contribution of the Partnership’s investment interest in the Muskie entity for an investment interest in Mammoth. Thus, the Partnership determined that the non-cash exchange of the Partnership’s ownership interest in Muskie did not result in any gain or loss. As of June 30, 2016 and 2015, the Partnership has recorded its investment in Mammoth of $1.9 million as a long-term asset, which the Partnership records as a cost method investment based upon its ownership percentage. The Partnership has included its investment in Mammoth and its prior investment in Muskie in its Other category for segment reporting purposes. In September 2014, the Partnership made an initial investment of $5.0 million in a new joint venture, Sturgeon Acquisitions LLC (“Sturgeon”), with affiliates of Wexford Capital and Gulfport Energy (“Gulfport”), a publicly traded company. Sturgeon subsequently acquired 100% of the outstanding equity interests of certain limited liability companies located in Wisconsin that provide frac sand for oil and natural gas drillers in the United States. The Partnership accounts for the investment in the joint venture and results of operations under the equity method. The Partnership recorded its proportionate share of the operating (loss) for Sturgeon for the three and six months ended June 30, 2016 of approximately ($26,000) and ($0.1) million, respectively. The Partnership recorded its proportionate share of the operating income for Sturgeon for the three and six months ended June 30, 2015 of approximately $0.1 million and $0.3 million, respectively. The Partnership has included the operating activities of Sturgeon in its Other category for segment reporting purposes. Recently Issued Accounting Standards. Revenue Recognition Revenue Recognition—Construction-Type and Production-Type Contracts Property, Plant, and Equipment Intangibles—Goodwill and Other In January 2015, the FASB issued ASU 2015-01, “Income Statement-Extraordinary and Unusual Items”. ASC 225-20, Income Statement—Extraordinary and Unusual Items, required that an entity separately classify, present, and disclose extraordinary events and transactions. ASU 2015-01 eliminates the concept of extraordinary items. The amendments in ASU 2015-01 are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. A reporting entity may apply the amendments prospectively. A reporting entity also may apply the amendments retrospectively to all prior periods presented in the financial statements. Early adoption is permitted provided that the guidance is applied from the beginning of the fiscal year of adoption. The effective date is the same for both public business entities and all other entities. The adoption of ASU 2015-01 on January 1, 2016 did not have a material impact on the Partnership’s financial statements. In February 2015, the FASB issued ASU 2015-02, “Consolidation”. ASU 2015-02 affects reporting entities that are required to evaluate whether they should consolidate certain legal entities. All legal entities are subject to reevaluation under the revised consolidation model. Specifically, the amendments of ASU 2015-02: a) modify the evaluation of whether limited partnerships and similar legal entities are variable interest entities (VIEs) or voting interest entities, b) eliminate the presumption that a general partner should consolidate a limited partnership, c) affect the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships and d) provide a scope exception from consolidation guidance for reporting entities with interests in legal entities that are required to comply with or operate in accordance with requirements that are similar to those in Rule 2a-7 of the Investment Company Act of 1940 for registered money market funds. ASU 2015-02 is effective for public business entities for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. A reporting entity may apply the amendments in this Update using a modified retrospective approach by recording a cumulative-effect adjustment to equity as of the beginning of the fiscal year of adoption. A reporting entity also may apply the amendments retrospectively. The adoption of ASU 2015-02 on January 1, 2016 did not have a material impact on the Partnership’s financial statements. In April 2015, the FASB issued ASU 2015-03, “Interest—Imputation of Interest (Subtopic 835-30)-Simplifying the Presentation of Debt Issuance Costs”. ASU 2015-03 requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. Prior to ASU 2015-03, debt issuance costs have been presented in the balance sheet as a deferred charge, or asset. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this ASU. For public business entities, ASU 2015-03 is effective for financial statements issued for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. Early adoption of ASU 2015-03 is permitted for financial statements that have not been previously issued. In addition, ASU 2015-03 requires entities to apply the new guidance on a retrospective basis, wherein the balance sheet of each individual period presented should be adjusted to reflect the period-specific effects of applying the new guidance. The adoption of ASU 2015-03 on January 1, 2016 did not have a material impact on the Partnership’s financial statements.

Discontinued Operations

Discontinued Operations	6 Months Ended
	Jun. 30, 2016
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	3. DISCONTINUED OPERATIONS Utica Shale Oil and Natural Gas Assets Beginning in 2011, the Partnership and an affiliate of Wexford Capital participated with Gulfport to acquire interests in a portfolio of oil and natural gas leases in the Utica Shale, which consisted of a 5% interest in a total of approximately 152,300 gross acres, or approximately 7,615 net acres. In March 2014, the Partnership completed a purchase and sale agreement with Gulfport to sell the Partnership’s oil and natural gas properties in the Utica Shale region. In addition, 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. In February 2015, the Partnership received approximately $0.7 million in additional proceeds from the sale by Blackhawk that had been held in escrow. For the six months ended June 30, 2015, the Partnership recorded the $0.7 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) 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 Curr

Prepaid Expenses and Other Current Assets	6 Months Ended
	Jun. 30, 2016
Prepaid Expense and Other Assets, Current [Abstract]
Prepaid Expenses and Other Current Assets	4. PREPAID EXPENSES AND OTHER CURRENT ASSETS Prepaid expenses and other current assets as of June 30, 2016 and December 31, 2015 consisted of the following: June 30, 2016 December 31, 2015 (in thousands) Other prepaid expenses $ 474 $ 682 Debt issuance costs—net - 2,155 Prepaid insurance 2,495 1,492 Prepaid leases 57 80 Supply inventory 955 901 Deposits 164 164 Total Prepaid expenses and other $ 4,145 $ 5,474 Debt issuance costs were included in Prepaid expenses and other current assets as of December 31, 2015 since the Partnership classified its credit facility balance as a current liability prior to the fifth amendment to the credit facility completed in May 2016. See Note 7 for further information on debt issuance costs and accumulated amortization of debt issuance costs as of June 30, 2016 and December 31, 2015. See Note 9 for further information on the amendments to the amended and restated senior secured credit facility.

Property, Plant and Equipment

Property, Plant and Equipment	6 Months Ended
	Jun. 30, 2016
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 June 30, 2016 and December 31, 2015 are summarized by major classification as follows: Useful Lives June 30, 2016 December 31, 2015 (in thousands) Land and land improvements $ 23,752 $ 24,157 Mining and other equipment and related facilities 2 - 20 Years 305,606 306,609 Mine development costs 1 - 15 Years 60,340 67,277 Coal properties 1 - 15 Years 85,087 203,791 Construction work in process 2,147 2,680 Total 476,932 604,514 Less accumulated depreciation, depletion and amortization (270,038 ) (271,007 ) Net $ 206,894 $ 333,507 Depreciation expense for mining and other equipment and related facilities, depletion expense for coal properties and oil and natural gas properties, amortization expense for mine development costs, amortization expense for intangible assets and amortization expense for asset retirement costs for the three and six months ended June 30, 2016 and 2015 were as follows: Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 (in thousands) Depreciation expense-mining and other equipment and related facilities $ 5,031 $ 7,391 $ 10,327 $ 14,968 Depletion expense for coal properties and oil and natural gas properties 532 727 1,114 1,534 Amortization expense for mine development costs 379 558 782 1,081 Amortization expense for intangible assets 8 20 16 40 Amortization expense for asset retirement costs (19 ) (100 ) (61 ) (175 ) Total depreciation, depletion and amortization $ 5,931 $ 8,596 $ 12,178 $ 17,448 Asset Impairment The Partnership’s Elk Horn coal leasing company is located in eastern Kentucky and provides the Partnership with coal royalty revenues from coal properties owned by Elk Horn and leased to third party operators. The ongoing weakness in the central Appalachia steam coal markets has adversely affected the price and demand for steam coal produced by operators that mine coal on the Elk Horn properties. Thus, Elk Horn’s royalty revenues have also declined as the operators produce less coal and prices for steam are depressed. During the second quarter of 2016, the Partnership received an inquiry from a third party interested in purchasing Elk Horn. Based upon the price offered by the third party and the continued deterioration of the central Appalachia steam coal markets that has adversely affected Elk Horn’s financial results, the Partnership decided to evaluate the Elk Horn assets for potential impairment as of June 30, 2016. The Partnership’s impairment analysis determined that a potential impairment existed since the carrying amount of the Elk Horn long-lived asset group exceeded the cash flows that would be generated from the purchase price offered from the third party. Based on a market approach used to estimate the fair value of the Elk Horn long-lived asset group, the Partnership recorded total asset impairment charges of approximately $118.7 million related to Coal properties for the three and six months ended June 30, 2016, which is recorded on the Loss on asset impairments line of the unaudited condensed consolidated statements of operations and comprehensive income.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	6 Months Ended
	Jun. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Intangible Assets	6. GOODWILL AND INTANGIBLE ASSETS 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 June 30, 2016 consisted of the following: Gross Net Carrying Accumulated Carrying Intangible Asset Amount Amortization Amount (in thousands) Trade Name $ 184 $ 46 $ 138 Customer List 470 119 351 Total $ 654 $ 165 $ 489 Intangible assets as of December 31, 2015 consisted of the following: Gross Net Carrying Accumulated Carrying Intangible Asset Amount Amortization Amount (in thousands) Trade Name $ 184 $ 42 $ 142 Customer List 470 107 363 Total $ 654 $ 149 $ 505 The Partnership considers the trade name and customer list intangible assets to have a useful life of twenty years and are amortized over their useful life on a straight-line basis. Amortization expense for the three and six months ended June 30, 2016 and 2015 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 June 30, 2016: Customer Trade Name List Total (in thousands) 2016 (from Jul 1 to Dec 31) $ 4 $ 12 $ 16 2017 9 23 32 2018 9 23 32 2019 9 23 32 2020 9 23 32

Other Non-Current Assets

Other Non-Current Assets	6 Months Ended
	Jun. 30, 2016
Other Assets, Noncurrent [Abstract]
Other Non-Current Assets	7. OTHER NON-CURRENT ASSETS Other non-current assets as of June 30, 2016 and December 31, 2015 consisted of the following: June 30, 2016 December 31, 2015 (in thousands) Deposits and other $ 154 $ 138 Debt issuance costs—net 2,555 - Non-current receivable 23,908 23,908 Note Receivable 2,064 2,000 Deferred expenses 234 261 Total $ 28,915 $ 26,307 Debt issuance costs were included in Prepaid expenses and other current assets as of December 31, 2015 since the Partnership classified its credit facility balance as a current liability prior to the fifth amendment to the credit facility completed in May 2016 and discussed further below (see Note 4 for Prepaid expenses and other current assets). Debt issuance costs were $13.1 million and $11.6 million as of June 30, 2016 and December 31, 2015, respectively. Accumulated amortization of debt issuance costs were $10.5 million and $9.4 million as of June 30, 2016 and December 31, 2015, respectively. In April 2015, the Partnership entered into a third amendment of its amended and restated senior secured credit facility that reduced the borrowing commitment to $100 million. As part of executing the third amendment to the amended and restated senior secured credit facility, the Operating Company paid a fee of approximately $2.1 million to the lenders in April 2015, which was recorded as an addition to Debt issuance costs. The Partnership wrote-off approximately $0.2 million of its remaining unamortized debt issuance costs since the third amendment reduced the borrowing commitment under the amended and restated senior secured credit facility. In March 2016, the Partnership entered into a fourth amendment of its amended and restated senior secured credit facility that reduced the borrowing commitment to $80 million. As part of executing the fourth amendment to the amended and restated senior secured credit facility, the Operating Company paid a fee of approximately $0.4 million to the lenders in March 2016, which was recorded as an addition to Debt issuance costs. The Partnership wrote-off approximately $0.2 million of its remaining unamortized debt issuance costs since the fourth amendment reduced the borrowing commitment under the amended and restated senior secured credit facility. In May 2016, the Partnership entered into a fifth amendment of its amended and restated senior secured credit facility that reduced the borrowing commitment to $75 million. As part of executing the fifth amendment to the amended and restated senior secured credit facility, the Operating Company paid a fee of approximately $1.2 million to the lenders in May 2016, which was recorded as an addition to Debt issuance costs. The Partnership wrote-off approximately $0.1 million of its remaining unamortized debt issuance costs since the fifth amendment reduced the borrowing commitment under the amended and restated senior secured credit facility. See Note 9 for further information on the amendments to the amended and restated senior secured credit facility. The non-current receivable balance of $23.9 million as of June 30, 2016 and December 31, 2015 consisted of the amount due from the Partnership’s workers’ compensation insurance providers for potential claims against the Partnership that are the primary responsibility of the Partnership, which are covered under the Partnership’s insurance policies. The $23.9 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, Balance Sheet

Accrued Expenses and Other Curr

Accrued Expenses and Other Current Liabilities	6 Months Ended
	Jun. 30, 2016
Payables and Accruals [Abstract]
Accrued Expenses and Other Current Liabilities	8. ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES Accrued expenses and other current liabilities as of June 30, 2016 and December 31, 2015 consisted of the following: June 30, 2016 December 31, 2015 (in thousands) Payroll, bonus and vacation expense $ 1,451 $ 1,447 Non income taxes 3,576 3,774 Royalty expenses 1,466 1,566 Accrued interest 1,120 575 Health claims 839 817 Workers’ compensation & pneumoconiosis 1,150 1,150 Deferred revenues 1,800 2,260 Accrued insured litigation claims 302 266 Other 519 2,247 Total $ 12,223 $ 14,102 The $0.3 million accrued for insured litigation claims as of June 30, 2016 and December 31, 2015 consists of probable and estimable litigation claims that are the primary obligation of the Partnership. 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, Balance Sheet

Debt

Debt	6 Months Ended
	Jun. 30, 2016
Debt Disclosure [Abstract]
Debt	9. DEBT Debt as of June 30, 2016 and December 31, 2015 consisted of the following: June 30, 2016 December 31, 2015 (in thousands) Senior secured credit facility with PNC Bank, N.A. $ 37,750 $ 41,200 Other notes payable 2,763 2,874 Total 40,513 44,074 Less current portion (288 ) (41,479 ) Long-term debt $ 40,225 $ 2,595 Senior Secured Credit Facility with PNC Bank, N.A. In April 2015, the Partnership entered into a third amendment of its amended and restated senior secured credit facility. The third amendment reduced the borrowing commitment under the credit facility to a maximum of $100 million and reduced the amount available for letters of credit to $50 million. The third amendment also provides that the disposition of any assets by the Partnership consisting of net cash proceeds up to an aggregate $35 million shall reduce the total commitment under the facility on a dollar-for-dollar basis by up to a total of $10 million, and any dispositions of assets in excess of $35 million in the aggregate shall reduce the commitment under the facility on a dollar-for-dollar basis. The third amendment limits the Partnership’s quarterly distributions to a maximum of $0.035 per unit unless (i) the pro forma leverage ratio of the Partnership, immediately prior to and after giving effect to such distribution, is less than or equal to 3.0 to 1.0 and (ii) the amount of borrowings available under the credit facility, immediately prior to and after giving effect to such distribution, is at least $20 million. In addition, the third amendment removed the interest coverage ratio covenant and replaced it with a minimum fixed charge coverage ratio, which consists of the ratio of consolidated EBITDA minus maintenance capital expenditures to fixed charges. Fixed charges are defined in the third amendment to include the sum of cash interest expense, scheduled principal installments on indebtedness (as adjusted for prepayments), dividends and distributions. Commencing with the quarter ended September 30, 2015, the fixed charge coverage ratio for the trailing four quarters must be a minimum of 1.1 to 1.0. The third amendment also limits any investments made by the Partnership, including investments in hydrocarbons, to $10 million provided that the leverage ratio is less than or equal to 3.0 to 1.0 and the borrowers’ available liquidity is at least $20 million. The third amendment does not permit the Partnership to issue any new equity of the Partnership unless the proceeds of such equity issuance are used to reduce the outstanding borrowings under the facility. Issuances of equity under the Partnership’s long-term incentive plan are excluded from this requirement. The third amendment limits the amount of the Partnership’s capital expenditures to $20.0 million for fiscal year 2015 and limited capital expenditures to $27.5 million for each fiscal year after 2015. However, to the extent that capital expenditures for any fiscal year are less than indicated above, the Partnership may increase the following year’s capital expenditures by the lesser of such unused amount or $5.0 million. As part of executing the third amendment to the amended and restated senior secured credit facility, the Operating Company paid a fee of approximately $2.1 million to the lenders in April 2015, 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 $0.2 million to write-off a portion of its unamortized debt issuance costs since the third amendment reduced the borrowing commitment under the amended and restated senior secured credit facility, which was recorded in Interest expense on the Partnership’s unaudited condensed consolidated statements of operations and comprehensive income. In March 2016, the Partnership entered into a fourth amendment (the “Fourth Amendment”) of its amended and restated senior secured credit facility. The Fourth Amendment amended the definition of change of control in the amended and restated credit agreement to permit Royal to purchase the membership interests of the General Partner and set the expiration of the facility to July 29, 2016. The Fourth Amendment reduced the borrowing capacity under the credit facility to a maximum of $80 million and reduced the amount available for letters of credit to $30 million. The Fourth Amendment eliminated the option to borrow funds utilizing the LIBOR rate plus an applicable margin and established the borrowing rate for all borrowings under the facility to be based upon the current PRIME rate plus an applicable margin of 3.50%. The Fourth Amendment eliminated the capability to make Swing Loans under the facility and eliminated the ability of the Partnership to pay distributions to its common or subordinated unitholders. The Fourth Amendment altered the maximum leverage ratio, calculated as of the end of the most recent month, on a trailing twelve-month basis, to 6.75 to 1.00. The leverage ratio shall be reduced by 0.50 to 1.00 for every $10 million of net cash proceeds, in the aggregate, received by the Partnership after the date of the Fourth Amendment from a liquidity event; provided, however, that in no event shall the maximum permitted leverage ratio be reduced below 3.00 to 1.00. A liquidity event is defined in the Fourth Amendment as the issuance of any equity by the Partnership on or after the Fourth Amendment effective date (other than the Royal equity contribution discussed above), or the disposition of any assets by the Partnership. The Fourth Amendment requires the Partnership to maintain minimum liquidity of $5 million and minimum EBITDA (as defined in the credit agreement), calculated as of the end of the most recent month, on a trailing twelve month basis, of $8 million. The Fourth Amendment limits the amount of the Partnership’s capital expenditures to $15 million, calculated as of end of the most recent month, on a trailing twelve-month basis. The Fourth Amendment requires the Partnership to provide monthly financial statements and a weekly rolling thirteen-week cash flow forecast to the administrative agent. On May 13, 2016, the Partnership entered into a fifth amendment (the “Fifth Amendment”) of its amended and restated senior secured credit facility that extends the term of the senior secured credit facility to July 31, 2017. Per the Fifth Amendment, the credit facility will be automatically extended to December 31, 2017 if revolving credit commitments are reduced to $55 million or less on or before July 31, 2017. The Fifth Amendment immediately reduces the revolving credit commitments under the credit facility to a maximum of $75 million and maintains the amount available for letters of credit at $30 million. The Fifth Amendment further reduces the revolving credit commitments over time on a dollar-for-dollar basis in amounts equal to each of the following: (i) the face amount of any letter of credit that expires or whose face amount is reduced by any such dollar amount, (ii) the net proceeds received from any asset sales, (iii) the Royal scheduled capital contributions (as outlined below), (iv) the net proceeds from the issuance of any equity by the Partnership up to $20.0 million (other than equity issued in exchange for any Royal contribution as outlined in the Securities Purchase Agreement or the Royal scheduled capital contributions to the Partnership as outlined below), and (v) the proceeds from the incurrence of any subordinated debt. The first $11 million of proceeds received from any equity issued by the Partnership described in clause (iv) above shall also satisfy the Royal scheduled capital contributions as outlined below. The Fifth Amendment requires Royal to contribute $2 million each quarter beginning September 30, 2016 through September 30, 2017 and $1 million on December 1, 2017, for a total of $11 million. The Fifth Amendment further reduces the revolving credit commitments as follows: Date of Reduction Reduction Amount September 30, 2016 The lesser of (i) $2 million or (ii) the positive difference (if any) of $2 million minus the proceeds from the issuance of any Partnership equity (excluding any Royal equity contributions) December 31, 2016 The lesser of (i) $2 million or (ii) the positive difference (if any) of $4 million minus the proceeds from the issuance of any Partnership equity (excluding any Royal equity contributions) March 31, 2017 The lesser of (i) $2 million or (ii) the positive difference (if any) of $6 million minus the proceeds from the issuance of any Partnership equity (excluding any Royal equity contributions) June 30, 2017 The lesser of (i) $2 million or (ii) the positive difference (if any) of $8 million minus the proceeds from the issuance of any Partnership equity (excluding any Royal equity contributions) September 30, 2017 The lesser of (i) $2 million or (ii) the positive difference (if any) of $10 million minus the proceeds from the issuance of any Partnership equity (excluding any Royal equity contributions) December 1, 2017 The lesser of (i) $1 million or (ii) the positive difference (if any) of $11 million minus the proceeds from the issuance of any Partnership equity (excluding any Royal equity contributions) The Fifth Amendment requires that on or before March 31, 2017, the Partnership shall have solicited bids for the potential sale of certain non-core assets, satisfactory to the administrative agent, and provided the administrative agent, and any other lender upon its request, with a description of the solicitation process, interested parties and any potential bids. The Fifth Amendment limits any payments by the Partnership to the General Partner to: (i) the usual and customary payroll and benefits of the Partnership’s management team so long as the Partnership’s management team remains employees of the General Partner, (2) the usual and customary board fees of the General Partner, and (3) the usual and customary general and administrative costs and expenses of the General Partner incurred in connection with the operation of its business in an amount not to exceed $0.3 million per fiscal year. The Fifth Amendment limits asset sales to a maximum of $5 million unless the Partnership receives consent from the lenders. The Fifth Amendment alters the maximum leverage ratio, calculated as of the end of the most recent month, on a trailing twelve-month basis, as follows: Period Ratio For the month ending April 30, 2016, through the month ending May 31, 2016 7.50 to 1.00 For the month ending June 30, 2016, through the month ending August 31, 2016 7.25 to 1.00 For the month ending September 30, 2016, through the month ending November 30, 2016 7.00 to 1.00 For the month ending December 31, 2016, through the month ending March 31, 2017 6.75 to 1.00 For the month ending April 30, 2017, through the month ending June 30, 2017 6.25 to 1.00 For the month ending July 31, 2017, through the month ending November 30, 2017 6.0 to 1.00 For the month ending December 31, 2017 5.50 to 1.00 The leverage ratios above shall be reduced by 0.50 to 1.00 for every $10 million of aggregate proceeds received by the Partnership from: (i) the issuance of equity by the Partnership (excluding any Royal capital contributions) and/or (ii) the proceeds received from the sale of assets, provided that the leverage ratio shall not be reduced below 3.50 to 1.00. The Fifth Amendment removes the $5.0 million minimum liquidity requirement and requires the Partnership to have any deposit, securities or investment accounts with a member of the lending group. At June 30, 2016, the Operating Company had borrowings outstanding (excluding letters of credit) of $37.8 million at a variable interest rate of PRIME plus 3.50% (7.00% at June 30, 2016). In addition, the Operating Company had outstanding letters of credit of approximately $27.8 million at a fixed interest rate of 5.00% at June 30, 2016. Based upon a maximum borrowing capacity of 7.25 times a trailing twelve-month EBITDA calculation (as defined in the credit agreement), the Operating Company had available borrowing capacity of approximately $6.7 million at June 30, 2016.

Asset Retirement Obligations

Asset Retirement Obligations	6 Months Ended
	Jun. 30, 2016
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligations	10. ASSET RETIREMENT OBLIGATIONS The changes in asset retirement obligations for the six months ended June 30, 2016 and the year ended December 31, 2015 are as follows: June 30, 2016 December 31, 2015 (in thousands) Balance at beginning of period (including current portion) $ 23,747 $ 29,883 Accretion expense 763 2,082 Adjustment resulting from addition of property - 1,235 Adjustment resulting from disposal of property (1) - (6,861 ) Adjustments to the liability from annual recosting and other - (2,078 ) Liabilities settled (142 ) (514 ) Balance at end of period 24,368 23,747 Less current portion of asset retirement obligation (1,646 ) (767 ) Long-term portion of asset retirement obligation $ 22,722 $ 22,980 (1) The ($6.9) million adjustment for the year ended December 31, 2015 relates to the sale of the Partnership’s Deane mining complex.

Employee Benefits

Employee Benefits	6 Months Ended
	Jun. 30, 2016
Compensation and Retirement Disclosure [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 that provided healthcare to eligible employees at its Hopedale operations. The Partnership has no other postretirement plans. On December 10, 2015, the Partnership notified the employees at its Hopedale operations that healthcare benefits from the postretirement benefit plan would cease on January 31, 2016. The negative plan amendment that arose on December 10, 2015 resulted in an approximate $6.5 million prior service cost benefit. The Partnership amortized the prior service cost benefit over the remaining term of the benefits provided through January 31, 2016. For the six months ended June 30, 2016, the Partnership recognized a benefit of approximately $3.9 million from the plan amendment in the Cost of operations line of the unaudited condensed consolidated statements of operations and comprehensive income. Net periodic benefit cost for the three and six months ended June 30, 2016 and 2015 are as follows: Three months ended June 30, Six months ended June 30, 2016 2015 2016 2015 (in thousands) Service costs $ - $ 67 $ - $ 135 Interest cost - 51 - 101 Amortization of (gain) - (44 ) (4,796 ) (89 ) Total $ - $ 74 $ (4,796 ) $ 147 For the three and six months ended June 30, 2016 and 2015, 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 Three months ended June 30, Six months ended June 30, 2016 2015 2016 2015 (in thousands) 401(k) plan expense $ 405 $ 595 $ 713 $ 1,153

Equity-Based Compensation

Equity-Based Compensation	6 Months Ended
	Jun. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [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 June 30, 2016, 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 from 2012 through 2015 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. 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. As discussed in Note 1, on March 17, 2016, Royal completed the acquisition of all of the issued and outstanding membership interests of Rhino GP LLC as well as 9,455,252 issued and outstanding subordinated units from Wexford Capital. Royal obtained control of, and a majority limited partner interest, in the Partnership with the completion of this transaction, which constituted a change in control of the Partnership. The language in the Partnership’s phantom unit and restricted unit grant agreements states that all outstanding, unvested units will become immediately vested upon a change in control. The Partnership recognized approximately $10,000 of expense from the vesting of these units as a result of the change in control. During the three months ended June 30, 2016, the General Partner granted fully vested common units to its board of directors as well as certain members of management. The Partnership recognized approximately $0.6 million of expense for the three months ended June 30, 2016 in relation to the common units granted.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	13. COMMITMENTS AND CONTINGENCIES Coal Sales Contracts and Contingencies Year Tons (in thousands) Number of customers 2016 Q3-Q4 1,702 13 2017 1,826 4 2018 414 2 Some of the contracts have sales price adjustment provisions, subject to certain limitations and adjustments, based on a variety of factors and indices. Leases Three months ended June 30, Six months ended June 30, 2016 2015 2016 2015 (in thousands) Lease expense $ 1,049 $ 1,298 $ 2,092 $ 2,419 Royalty expense $ 2,606 $ 3,592 $ 4,948 $ 6,426 Joint Ventures The Partnership may contribute additional capital to the Sturgeon joint venture that was formed in the third quarter of 2014. The Partnership made an initial capital contribution of $5.0 million during the third quarter ended September 30, 2014 based upon its proportionate ownership interest. The Partnership did not make any capital contributions to the Sturgeon joint venture during the six months ended June 30, 2016 or 2015.

Earnings Per Unit ('EPU')

Earnings Per Unit ('EPU')	6 Months Ended
	Jun. 30, 2016
Earnings Per Unit [Abstract]
Earnings Per Unit ("EPU")	14. EARNINGS PER UNIT (“EPU”) On April 18, 2016, the Partnership completed a 1-for-10 reverse split on its common units and subordinated units. The following tables present a reconciliation of the numerators and denominators of the basic and diluted EPU calculations for the periods ended June 30, 2016 and 2015, which include the retrospective application of the 1-for-10 reverse unit split: Three months ended June 30, 2016 General Partner Common Unitholders Subordinated Unitholders (in thousands, except per unit data) Numerator: Interest in net (loss): Net (loss) from continuing operations $ (808 ) $ (104,558 ) $ (16,587 ) Net income from discontinued operations - - - Total interest in net (loss) $ (808 ) $ (104,558 ) $ (16,587 ) Impact of subordinated distribution suspension: Net income/(loss) from continuing operations $ - $ - $ - Net income from discontinued operations - - - Interest in net income $ - $ - $ - Interest in net (loss) for EPU purposes: Net (loss) from continuing operations $ (808 ) $ (104,558 ) $ (16,587 ) Net income from discontinued operations - - - Interest in net (loss) $ (808 ) $ (104,558 ) $ (16,587 ) Denominator: Weighted average units used to compute basic EPU n/a 7,788 1,236 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 7,788 1,236 Net (loss)/income per limited partner unit, basic Net (loss) per unit from continuing operations n/a $ (13.42 ) $ (13.42 ) Net income per unit from discontinued operations n/a - - Net (loss) per common unit, basic n/a $ (13.42 ) $ (13.42 ) Net (loss)/income per limited partner unit, diluted Net (loss) per unit from continuing operations n/a $ (13.42 ) $ (13.42 ) Net income per unit from discontinued operations n/a - - Net (loss) per common unit, diluted n/a $ (13.42 ) $ (13.42 ) Six months ended June 30, 2016 General Partner Common Unitholders Subordinated Unitholders (in thousands, except per unit data) Numerator: Interest in net (loss)/income: Net (loss) from continuing operations $ (832 ) $ (89,511 ) $ (32,833 ) Net income from discontinued operations - - - Total interest in net (loss) $ (832 ) $ (89,511 ) $ (32,833 ) Impact of subordinated distribution suspension: Net income/(loss) from continuing operations $ - $ - $ - Net income from discontinued operations - - - Interest in net income/(loss) $ - $ - $ - Interest in net (loss)/income for EPU purposes: Net (loss) from continuing operations $ (832 ) $ (89,511 ) $ (32,833 ) Net income from discontinued operations - - - Interest in net (loss) $ (832 ) $ (89,511 ) $ (32,833 ) Denominator: Weighted average units used to compute basic EPU n/a 3,368 1,236 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 3,368 1,236 Net (loss)/income per limited partner unit, basic Net (loss) per unit from continuing operations n/a $ (26.57 ) $ (26.57 ) Net income per unit from discontinued operations n/a - - Net income per common unit, basic n/a $ (26.57 ) $ (26.57 ) Net (loss)/income per limited partner unit, diluted Net (loss) per unit from continuing operations n/a $ (26.57 ) $ (26.57 ) Net income per unit from discontinued operations n/a - - Net income per common unit, diluted n/a $ (26.57 ) $ (26.57 ) Three months ended June 30, 2015 General Partner Common Unitholders Subordinated Unitholders (in thousands, except per unit data) Numerator: Interest in net (loss): Net (loss) from continuing operations $ (162 ) $ (4,563 ) $ (3,387 ) Net income from discontinued operations - - - Total interest in net (loss) $ (162 ) $ (4,563 ) $ (3,387 ) Impact of subordinated distribution suspension: Net income/(loss) from continuing operations $ - $ - $ - Net income from discontinued operations - - - Interest in net income/(loss) $ - $ - $ - Interest in net (loss) for EPU purposes: Net (loss) from continuing operations $ (162 ) $ (4,563 ) $ (3,387 ) Net income from discontinued operations - - - Interest in net (loss) $ (162 ) $ (4,563 ) $ (3,387 ) Denominator: Weighted average units used to compute basic EPU n/a 1,670 1,240 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 1,670 1,240 Net (loss)/income per limited partner unit, basic Net (loss) per unit from continuing operations n/a $ (2.73 ) $ (2.73 ) Net income per unit from discontinued operations n/a - - Net (loss) per common unit, basic n/a $ (2.73 ) $ (2.73 ) Net (loss)/income per limited partner unit, diluted Net (loss) per unit from continuing operations n/a $ (2.73 ) $ (2.73 ) Net income per unit from discontinued operations n/a - - Net (loss) per common unit, diluted n/a $ (2.73 ) $ (2.73 ) Six months ended June 30, 2015 General Partner Common Unitholders Subordinated Unitholders (in thousands, except per unit data) Numerator: Interest in net (loss)/income: Net (loss) from continuing operations $ (253 ) $ (7,128 ) $ (5,293 ) Net income from discontinued operations 14 406 302 Total interest in net income $ (239 ) $ (6,722 ) $ (4,991 ) Impact of subordinated distribution suspension: Net income/(loss) from continuing operations $ 5 $ 140 $ (145 ) Net income from discontinued operations - - - Interest in net income/(loss) $ 5 $ 140 $ (145 ) Interest in net (loss)/income for EPU purposes: Net (loss) from continuing operations $ (248 ) $ (6,988 ) $ (5,438 ) Net income from discontinued operations 14 406 302 Interest in net income $ (234 ) $ (6,582 ) $ (5,136 ) Denominator: Weighted average units used to compute basic EPU n/a 1,669 1,240 Effect of dilutive securities — LTIP awards: Dilutive securities for net income from continuing operations and discontinued operations n/a - - Weighted average units used to compute diluted EPU n/a 1,669 1,240 Net income per limited partner unit, basic Net income per unit from continuing operations n/a $ (4.18 ) $ (4.38 ) Net income per unit from discontinued operations n/a 0.24 0.24 Net income per common unit, basic n/a $ (3.94 ) $ (4.14 ) Net income per limited partner unit, diluted Net income per unit from continuing operations n/a $ (4.18 ) $ (4.38 ) Net income per unit from discontinued operations n/a 0.24 0.24 Net income per common unit, diluted n/a $ (3.94 ) $ (4.14 ) 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. Since the Partnership incurred total net losses for the three and six months ended June 30, 2016 and 2015, all potential dilutive units were excluded from the diluted EPU calculation for these periods because when an entity incurs a net loss in a period, potential dilutive units shall not be included in the computation of diluted EPU since their effect will always be anti-dilutive.

Major Customers

Major Customers	6 Months Ended
	Jun. 30, 2016
Risks and Uncertainties [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): June 30, 2016 December 31, 2015 Six months ended Six months ended Receivable Balance Receivable Balance June 30, 2016 Sales June 30, 2015 Sales (in thousands) PPL Corporation $ 1,274 $ 1,881 $ 20,624 16,335 PacifiCorp Energy 1,009 1,969 10,511 11,810 Big Rivers Electric Corporation 686 n/a 10,119 n/a NRG Energy, Inc. (fka GenOn Energy, Inc.) n/a - n/a 16,336

Fair Value of Financial Instrum

Fair Value of Financial Instruments	6 Months Ended
	Jun. 30, 2016
Fair Value Disclosures [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 amended and restated senior secured credit facility was based upon a Level 2 measurement utilizing a market approach, which incorporated market-based interest rate information with credit risks similar to the Partnership. The fair value of the Partnership’s amended and restated senior secured credit facility approximates the carrying value at June 30, 2016. As of June 30, 2016, the Partnership had a nonrecurring fair value measurement related to its Elk Horn asset impairment as described in Note 5. The nonrecurring fair value measurement for the Elk Horn asset impairment described in Note 5 as of June 30, 2016 was a Level 2 measurement. For the year ended December 31, 2015, the Partnership had nonrecurring fair value measurements related to its asset impairment actions. The nonrecurring fair value measurements for the asset impairments for the year ended December 31, 2015 were Level 3 measurements.

Supplemental Disclosures of Cas

Supplemental Disclosures of Cash Flow Information	6 Months Ended
	Jun. 30, 2016
Supplemental Cash Flow Information [Abstract]
Supplemental Disclosures of Cash Flow Information	17. SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION The unaudited condensed consolidated statements of cash flows for the six months ended June 30, 2016 and 2015 excludes approximately $1.2 million and $0.4 million, respectively, of property additions, which are recorded in accounts payable. In January 2015, the Partnership dissolved the Rhino Eastern joint venture with Patriot. As part of the dissolution, the Partnership retained coal reserves, a prepaid advanced royalty balance and other assets and liabilities. In addition, the Partnership and Patriot agreed to a dissolution payment as part of the dissolution based upon a final working capital adjustment calculation, which is a liability of the Partnership. The Partnership recorded the dissolution of the joint venture by removing the investment in the Rhino Eastern unconsolidated subsidiary and recording the specific assets and liabilities retained in the dissolution. The dissolution of the Rhino Eastern joint venture completed in January 2015 had no impact on the Partnership’s unconsolidated statements of operations and comprehensive income for the three and six months ended June 30, 2015. The unaudited condensed consolidated statement of cash flows for the six months ended June 30, 2015 excludes the removal of the investment in the unconsolidated subsidiary and the recognition of the retained assets and liabilities, which are detailed in the table below. (in thousands) Coal properties (incl asset retirement costs) $ 12,104 Advance royalties, net of current portion 4,706 Other non-current assets - acquired 229 Other non-current assets - written off (642 ) Accrued expenses and other (2,012 ) Asset retirement obligations (1,235 ) Net assets acquired 13,150 Investment in unconsolidated affiliates-Rhino Eastern - written off $ (13,150 )

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2016
Segment Reporting [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 and six months ended June 30, 2016, 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 Illinois Basin (comprised of an underground mine in western Kentucky). 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. Reportable segment results of operations for the three months ended June 30, 2016 are as follows (Note: “DD&A” refers to depreciation, depletion and amortization): Central Northern Rhino Illinois Total Appalachia Appalachia Western Basin Other Consolidated (in thousands) Total revenues $ 6,756 $ 11,581 $ 8,324 $ 16,000 $ 79 $ 42,740 DD&A 1,707 811 1,404 1,867 142 5,931 Interest expense 696 101 102 256 570 1,725 Net income (loss) from continuing operations $ (122,199 ) $ 1,858 $ (30 ) $ (747 ) $ (835 ) $ (121,953 ) Reportable segment results of operations for the six months ended June 30, 2016 are as follows: Central Northern Rhino Illinois Total Appalachia Appalachia Western Basin Other Consolidated (in thousands) Total revenues $ 13,467 $ 20,733 $ 17,921 $ 30,880 $ 168 $ 83,169 DD&A 3,635 1,764 2,815 3,680 284 12,178 Interest expense 1,268 230 188 461 1,152 3,299 Net income (loss) from continuing operations $ (125,948 ) $ 5,839 $ (627 ) $ (1,437 ) $ (1,003 ) $ (123,176 ) Reportable segment results of operations for the three months ended June 30, 2015 are as follows: Central Northern Rhino Illinois Total Appalachia Appalachia Western Basin Other Consolidated (in thousands) Total revenues $ 19,013 $ 16,757 $ 10,092 $ 10,583 $ 320 $ 56,765 DD&A 3,392 1,958 1,619 1,436 191 8,596 Interest expense 456 122 67 136 532 1,313 Net income (loss) from continuing operations $ (3,824 ) $ 1,505 $ (1,232 ) $ (2,648 ) $ (1,913 ) $ (8,112 ) Reportable segment results of operations for the six months ended June 30, 2015 are as follows: Central Northern Rhino Illinois Total Appalachia Appalachia Western Basin Other Consolidated (in thousands) Total revenues $ 41,263 $ 34,088 $ 18,552 $ 17,762 $ 1,284 $ 112,949 DD&A 7,340 3,805 3,229 2,650 424 17,448 Interest expense 847 236 130 255 802 2,270 Net income (loss) from continuing operations $ (4,054 ) $ 2,684 $ (2,529 ) $ (7,188 ) $ (1,587 ) $ (12,674 )

Subsequent Events

Subsequent Events	6 Months Ended
	Jun. 30, 2016
Subsequent Events [Abstract]
Subsequent Events	19. SUBSEQUENT EVENTS On July 7, 2016, the Partnership executed an agreement with the third party that held the approximately $2.8 million of other notes payable, as detailed in Note 9, to settle the debt for $1.1 million of cash consideration. The Partnership paid the $1.1 million in July 2016 and will recognize an approximate $1.7 million gain from the extinguishment of this debt. For the quarter ended June 30, 2016, the Partnership continued the suspension of the cash distribution for its common units, which was initially suspended for the quarter ended June 30, 2015. No distribution will be paid for common or subordinated units for the quarter ended June 30, 2016. The Partnership’s common units accrue arrearages every quarter when the distribution level is below the minimum level of $0.445 per unit, as outlined in the Partnership’s limited partnership agreement. The Partnership initially lowered its quarterly common unit distribution below the minimum level of $0.445 per unit with the quarter ended September 30, 2014. Thus, the Partnership’s distributions for each of the quarters ended September 30, 2014 through the quarter ended June 30, 2016 were below the minimum level and the current amount of accumulated arrearages as of June 30, 2016 related to the common unit distribution was approximately $114.2 million.

Summary of Significant Accoun26

Summary of Significant Accounting Policies and General (Policies)	6 Months Ended
	Jun. 30, 2016
Accounting Policies [Abstract]
Investments in Unconsolidated Affiliates	Investments in Unconsolidated Affiliates. 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 located in Central Appalachia. The Partnership accounted for the investment in the joint venture and its results of operations under the equity method. In January 2015, the Partnership completed a Membership Transfer Agreement (the “Transfer Agreement”) with an affiliate of Patriot that terminated the Rhino Eastern joint venture. Pursuant to the Transfer Agreement, Patriot sold and assigned its 49% membership interest in the Rhino Eastern joint venture to the Partnership and, in consideration of this transfer, Patriot received certain fixed assets, leased equipment and coal reserves associated with the mining area previously operated by the Rhino Eastern joint venture. Patriot also assumed substantially all of the active workforce related to the Eagle mining area that was previously employed by the Rhino Eastern joint venture. The Partnership retained approximately 34 million tons of coal reserves that are not related to the Eagle mining area as well as a prepaid advanced royalty balance. As part of the closing of the Transfer Agreement, the Partnership and Patriot agreed to a dissolution payment based upon a final working capital adjustment calculation as defined in the Transfer Agreement. Refer to Note 17 for information on the financial statement impact of the Rhino Eastern dissolution completed in January 2015. 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 accounted for the investment in the joint venture and results of operations under the equity method. In November 2014, the Partnership contributed its interest in Muskie to Mammoth Energy Partners LP (“Mammoth”), which is discussed below. In November 2014, the Partnership contributed its investment interest in Muskie to Mammoth in return for a limited partner interest in Mammoth. Mammoth was formed to own various companies that provide services to companies, which engage in the exploration and development of North American onshore unconventional oil and natural gas reserves. Mammoth’s companies provide services that include completion and production services, contract land and directional drilling services and remote accommodation services. The non-cash transaction was a contribution of the Partnership’s investment interest in the Muskie entity for an investment interest in Mammoth. Thus, the Partnership determined that the non-cash exchange of the Partnership’s ownership interest in Muskie did not result in any gain or loss. As of June 30, 2016 and 2015, the Partnership has recorded its investment in Mammoth of $1.9 million as a long-term asset, which the Partnership records as a cost method investment based upon its ownership percentage. The Partnership has included its investment in Mammoth and its prior investment in Muskie in its Other category for segment reporting purposes. In September 2014, the Partnership made an initial investment of $5.0 million in a new joint venture, Sturgeon Acquisitions LLC (“Sturgeon”), with affiliates of Wexford Capital and Gulfport Energy (“Gulfport”), a publicly traded company. Sturgeon subsequently acquired 100% of the outstanding equity interests of certain limited liability companies located in Wisconsin that provide frac sand for oil and natural gas drillers in the United States. The Partnership accounts for the investment in the joint venture and results of operations under the equity method. The Partnership recorded its proportionate share of the operating (loss) for Sturgeon for the three and six months ended June 30, 2016 of approximately ($26,000) and ($0.1) million, respectively. The Partnership recorded its proportionate share of the operating income for Sturgeon for the three and six months ended June 30, 2015 of approximately $0.1 million and $0.3 million, respectively. The Partnership has included the operating activities of Sturgeon in its Other category for segment reporting purposes.
Recently Issued Accounting Standards	Recently Issued Accounting Standards. Revenue Recognition Revenue Recognition—Construction-Type and Production-Type Contracts Property, Plant, and Equipment Intangibles—Goodwill and Other In January 2015, the FASB issued ASU 2015-01, “Income Statement-Extraordinary and Unusual Items”. ASC 225-20, Income Statement—Extraordinary and Unusual Items, required that an entity separately classify, present, and disclose extraordinary events and transactions. ASU 2015-01 eliminates the concept of extraordinary items. The amendments in ASU 2015-01 are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2015. A reporting entity may apply the amendments prospectively. A reporting entity also may apply the amendments retrospectively to all prior periods presented in the financial statements. Early adoption is permitted provided that the guidance is applied from the beginning of the fiscal year of adoption. The effective date is the same for both public business entities and all other entities. The adoption of ASU 2015-01 on January 1, 2016 did not have a material impact on the Partnership’s financial statements. In February 2015, the FASB issued ASU 2015-02, “Consolidation”. ASU 2015-02 affects reporting entities that are required to evaluate whether they should consolidate certain legal entities. All legal entities are subject to reevaluation under the revised consolidation model. Specifically, the amendments of ASU 2015-02: a) modify the evaluation of whether limited partnerships and similar legal entities are variable interest entities (VIEs) or voting interest entities, b) eliminate the presumption that a general partner should consolidate a limited partnership, c) affect the consolidation analysis of reporting entities that are involved with VIEs, particularly those that have fee arrangements and related party relationships and d) provide a scope exception from consolidation guidance for reporting entities with interests in legal entities that are required to comply with or operate in accordance with requirements that are similar to those in Rule 2a-7 of the Investment Company Act of 1940 for registered money market funds. ASU 2015-02 is effective for public business entities for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2015. Early adoption is permitted, including adoption in an interim period. If an entity early adopts the amendments in an interim period, any adjustments should be reflected as of the beginning of the fiscal year that includes that interim period. A reporting entity may apply the amendments in this Update using a modified retrospective approach by recording a cumulative-effect adjustment to equity as of the beginning of the fiscal year of adoption. A reporting entity also may apply the amendments retrospectively. The adoption of ASU 2015-02 on January 1, 2016 did not have a material impact on the Partnership’s financial statements. In April 2015, the FASB issued ASU 2015-03, “Interest—Imputation of Interest (Subtopic 835-30)-Simplifying the Presentation of Debt Issuance Costs”. ASU 2015-03 requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. Prior to ASU 2015-03, debt issuance costs have been presented in the balance sheet as a deferred charge, or asset. The recognition and measurement guidance for debt issuance costs are not affected by the amendments in this ASU. For public business entities, ASU 2015-03 is effective for financial statements issued for fiscal years beginning after December 15, 2015, and interim periods within those fiscal years. Early adoption of ASU 2015-03 is permitted for financial statements that have not been previously issued. In addition, ASU 2015-03 requires entities to apply the new guidance on a retrospective basis, wherein the balance sheet of each individual period presented should be adjusted to reflect the period-specific effects of applying the new guidance. The adoption of ASU 2015-03 on January 1, 2016 did not have a material impact on the Partnership’s financial statements.

Prepaid Expenses And Other Cu27

Prepaid Expenses And Other Current Assets (Tables)	6 Months Ended
	Jun. 30, 2016
Prepaid Expense and Other Assets, Current [Abstract]
Schedule of Prepaid Expenses and Other Current Assets	Prepaid expenses and other current assets as of June 30, 2016 and December 31, 2015 consisted of the following: June 30, 2016 December 31, 2015 (in thousands) Other prepaid expenses $ 474 $ 682 Debt issuance costs—net - 2,155 Prepaid insurance 2,495 1,492 Prepaid leases 57 80 Supply inventory 955 901 Deposits 164 164 Total Prepaid expenses and other $ 4,145 $ 5,474

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	6 Months Ended
	Jun. 30, 2016
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment by Major Classification	Property, plant and equipment, including coal properties and mine development and construction costs, as of June 30, 2016 and December 31, 2015 are summarized by major classification as follows: Useful Lives June 30, 2016 December 31, 2015 (in thousands) Land and land improvements $ 23,752 $ 24,157 Mining and other equipment and related facilities 2 - 20 Years 305,606 306,609 Mine development costs 1 - 15 Years 60,340 67,277 Coal properties 1 - 15 Years 85,087 203,791 Construction work in process 2,147 2,680 Total 476,932 604,514 Less accumulated depreciation, depletion and amortization (270,038 ) (271,007 ) Net $ 206,894 $ 333,507
Depreciation, Depletion, and Amortization	Depreciation expense for mining and other equipment and related facilities, depletion expense for coal properties and oil and natural gas properties, amortization expense for mine development costs, amortization expense for intangible assets and amortization expense for asset retirement costs for the three and six months ended June 30, 2016 and 2015 were as follows: Three Months Ended June 30, Six Months Ended June 30, 2016 2015 2016 2015 (in thousands) Depreciation expense-mining and other equipment and related facilities $ 5,031 $ 7,391 $ 10,327 $ 14,968 Depletion expense for coal properties and oil and natural gas properties 532 727 1,114 1,534 Amortization expense for mine development costs 379 558 782 1,081 Amortization expense for intangible assets 8 20 16 40 Amortization expense for asset retirement costs (19 ) (100 ) (61 ) (175 ) Total depreciation, depletion and amortization $ 5,931 $ 8,596 $ 12,178 $ 17,448

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets by Major Class	Intangible assets as of June 30, 2016 consisted of the following: Gross Net Carrying Accumulated Carrying Intangible Asset Amount Amortization Amount (in thousands) Trade Name $ 184 $ 46 $ 138 Customer List 470 119 351 Total $ 654 $ 165 $ 489 Intangible assets as of December 31, 2015 consisted of the following: Gross Net Carrying Accumulated Carrying Intangible Asset Amount Amortization Amount (in thousands) Trade Name $ 184 $ 42 $ 142 Customer List 470 107 363 Total $ 654 $ 149 $ 505
Schedule of Future Amortization Expense of Intangible Assets	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 June 30, 2016: Customer Trade Name List Total (in thousands) 2016 (from Jul 1 to Dec 31) $ 4 $ 12 $ 16 2017 9 23 32 2018 9 23 32 2019 9 23 32 2020 9 23 32

Other Non-Current Assets (Table

Other Non-Current Assets (Tables)	6 Months Ended
	Jun. 30, 2016
Other Assets, Noncurrent [Abstract]
Schedule of Other Non-current Assets	Other non-current assets as of June 30, 2016 and December 31, 2015 consisted of the following: June 30, 2016 December 31, 2015 (in thousands) Deposits and other $ 154 $ 138 Debt issuance costs—net 2,555 - Non-current receivable 23,908 23,908 Note Receivable 2,064 2,000 Deferred expenses 234 261 Total $ 28,915 $ 26,307

Accrued Expenses and Other Cu31

Accrued Expenses and Other Current Liabilities (Tables)	6 Months Ended
	Jun. 30, 2016
Payables and Accruals [Abstract]
Schedule of Accrued Expenses and Other Current Liabilities	Accrued expenses and other current liabilities as of June 30, 2016 and December 31, 2015 consisted of the following: June 30, 2016 December 31, 2015 (in thousands) Payroll, bonus and vacation expense $ 1,451 $ 1,447 Non income taxes 3,576 3,774 Royalty expenses 1,466 1,566 Accrued interest 1,120 575 Health claims 839 817 Workers’ compensation & pneumoconiosis 1,150 1,150 Deferred revenues 1,800 2,260 Accrued insured litigation claims 302 266 Other 519 2,247 Total $ 12,223 $ 14,102

Debt (Tables)

Debt (Tables)	6 Months Ended
	Jun. 30, 2016
Debt Disclosure [Abstract]
Schedule of Debt	Debt as of June 30, 2016 and December 31, 2015 consisted of the following: June 30, 2016 December 31, 2015 (in thousands) Senior secured credit facility with PNC Bank, N.A. $ 37,750 $ 41,200 Other notes payable 2,763 2,874 Total 40,513 44,074 Less current portion (288 ) (41,479 ) Long-term debt $ 40,225 $ 2,595
Schedule of Changes to Borrowing Capacity of Credit Facility	Date of Reduction Reduction Amount September 30, 2016 The lesser of (i) $2 million or (ii) the positive difference (if any) of $2 million minus the proceeds from the issuance of any Partnership equity (excluding any Royal equity contributions) December 31, 2016 The lesser of (i) $2 million or (ii) the positive difference (if any) of $4 million minus the proceeds from the issuance of any Partnership equity (excluding any Royal equity contributions) March 31, 2017 The lesser of (i) $2 million or (ii) the positive difference (if any) of $6 million minus the proceeds from the issuance of any Partnership equity (excluding any Royal equity contributions) June 30, 2017 The lesser of (i) $2 million or (ii) the positive difference (if any) of $8 million minus the proceeds from the issuance of any Partnership equity (excluding any Royal equity contributions) September 30, 2017 The lesser of (i) $2 million or (ii) the positive difference (if any) of $10 million minus the proceeds from the issuance of any Partnership equity (excluding any Royal equity contributions) December 1, 2017 The lesser of (i) $1 million or (ii) the positive difference (if any) of $11 million minus the proceeds from the issuance of any Partnership equity (excluding any Royal equity contributions)
Schedule of Changes to Maximum Leverage Ratio Allowed by Credit Facility Covenants	The Fifth Amendment alters the maximum leverage ratio, calculated as of the end of the most recent month, on a trailing twelve-month basis, as follows: Period Ratio For the month ending April 30, 2016, through the month ending May 31, 2016 7.50 to 1.00 For the month ending June 30, 2016, through the month ending August 31, 2016 7.25 to 1.00 For the month ending September 30, 2016, through the month ending November 30, 2016 7.00 to 1.00 For the month ending December 31, 2016, through the month ending March 31, 2017 6.75 to 1.00 For the month ending April 30, 2017, through the month ending June 30, 2017 6.25 to 1.00 For the month ending July 31, 2017, through the month ending November 30, 2017 6.0 to 1.00 For the month ending December 31, 2017 5.50 to 1.00

Asset Retirement Obligations (T

Asset Retirement Obligations (Tables)	6 Months Ended
	Jun. 30, 2016
Asset Retirement Obligation Disclosure [Abstract]
Schedule of Asset Retirement Obligations	The changes in asset retirement obligations for the six months ended June 30, 2016 and the year ended December 31, 2015 are as follows: June 30, 2016 December 31, 2015 (in thousands) Balance at beginning of period (including current portion) $ 23,747 $ 29,883 Accretion expense 763 2,082 Adjustment resulting from addition of property - 1,235 Adjustment resulting from disposal of property (1) - (6,861 ) Adjustments to the liability from annual recosting and other - (2,078 ) Liabilities settled (142 ) (514 ) Balance at end of period 24,368 23,747 Less current portion of asset retirement obligation (1,646 ) (767 ) Long-term portion of asset retirement obligation $ 22,722 $ 22,980 (1) The ($6.9) million adjustment for the year ended December 31, 2015 relates to the sale of the Partnership’s Deane mining complex.

Employee Benefits (Tables)

Employee Benefits (Tables)	6 Months Ended
	Jun. 30, 2016
Compensation and Retirement Disclosure [Abstract]
Components of Net Periodic Benefit Cost	Net periodic benefit cost for the three and six months ended June 30, 2016 and 2015 are as follows: Three months ended June 30, Six months ended June 30, 2016 2015 2016 2015 (in thousands) Service costs $ - $ 67 $ - $ 135 Interest cost - 51 - 101 Amortization of (gain) - (44 ) (4,796 ) (89 ) Total $ - $ 74 $ (4,796 ) $ 147
Schedule of Expense Under Defined Contribution Savings Plans	Three months ended June 30, Six months ended June 30, 2016 2015 2016 2015 (in thousands) 401(k) plan expense $ 405 $ 595 $ 713 $ 1,153

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Schedule of Delivery Commitments	Coal Sales Contracts and Contingencies Year Tons (in thousands) Number of customers 2016 Q3-Q4 1,702 13 2017 1,826 4 2018 414 2
Schedule of Lease and Royalty Expense	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 and six months ended June 30, 2016 and 2015 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 June 30, Six months ended June 30, 2016 2015 2016 2015 (in thousands) Lease expense $ 1,049 $ 1,298 $ 2,092 $ 2,419 Royalty expense $ 2,606 $ 3,592 $ 4,948 $ 6,426

Earnings Per Unit ('EPU') (Tabl

Earnings Per Unit ('EPU') (Tables)	6 Months Ended
	Jun. 30, 2016
Earnings Per Unit [Abstract]
Schedule of Calculation of Numerator and Denominator in Earnings Per Share	The following tables present a reconciliation of the numerators and denominators of the basic and diluted EPU calculations for the periods ended June 30, 2016 and 2015, which include the retrospective application of the 1-for-10 reverse unit split: Three months ended June 30, 2016 General Partner Common Unitholders Subordinated Unitholders (in thousands, except per unit data) Numerator: Interest in net (loss): Net (loss) from continuing operations $ (808 ) $ (104,558 ) $ (16,587 ) Net income from discontinued operations - - - Total interest in net (loss) $ (808 ) $ (104,558 ) $ (16,587 ) Impact of subordinated distribution suspension: Net income/(loss) from continuing operations $ - $ - $ - Net income from discontinued operations - - - Interest in net income $ - $ - $ - Interest in net (loss) for EPU purposes: Net (loss) from continuing operations $ (808 ) $ (104,558 ) $ (16,587 ) Net income from discontinued operations - - - Interest in net (loss) $ (808 ) $ (104,558 ) $ (16,587 ) Denominator: Weighted average units used to compute basic EPU n/a 7,788 1,236 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 7,788 1,236 Net (loss)/income per limited partner unit, basic Net (loss) per unit from continuing operations n/a $ (13.42 ) $ (13.42 ) Net income per unit from discontinued operations n/a - - Net (loss) per common unit, basic n/a $ (13.42 ) $ (13.42 ) Net (loss)/income per limited partner unit, diluted Net (loss) per unit from continuing operations n/a $ (13.42 ) $ (13.42 ) Net income per unit from discontinued operations n/a - - Net (loss) per common unit, diluted n/a $ (13.42 ) $ (13.42 ) Six months ended June 30, 2016 General Partner Common Unitholders Subordinated Unitholders (in thousands, except per unit data) Numerator: Interest in net (loss)/income: Net (loss) from continuing operations $ (832 ) $ (89,511 ) $ (32,833 ) Net income from discontinued operations - - - Total interest in net (loss) $ (832 ) $ (89,511 ) $ (32,833 ) Impact of subordinated distribution suspension: Net income/(loss) from continuing operations $ - $ - $ - Net income from discontinued operations - - - Interest in net income/(loss) $ - $ - $ - Interest in net (loss)/income for EPU purposes: Net (loss) from continuing operations $ (832 ) $ (89,511 ) $ (32,833 ) Net income from discontinued operations - - - Interest in net (loss) $ (832 ) $ (89,511 ) $ (32,833 ) Denominator: Weighted average units used to compute basic EPU n/a 3,368 1,236 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 3,368 1,236 Net (loss)/income per limited partner unit, basic Net (loss) per unit from continuing operations n/a $ (26.57 ) $ (26.57 ) Net income per unit from discontinued operations n/a - - Net income per common unit, basic n/a $ (26.57 ) $ (26.57 ) Net (loss)/income per limited partner unit, diluted Net (loss) per unit from continuing operations n/a $ (26.57 ) $ (26.57 ) Net income per unit from discontinued operations n/a - - Net income per common unit, diluted n/a $ (26.57 ) $ (26.57 ) Three months ended June 30, 2015 General Partner Common Unitholders Subordinated Unitholders (in thousands, except per unit data) Numerator: Interest in net (loss): Net (loss) from continuing operations $ (162 ) $ (4,563 ) $ (3,387 ) Net income from discontinued operations - - - Total interest in net (loss) $ (162 ) $ (4,563 ) $ (3,387 ) Impact of subordinated distribution suspension: Net income/(loss) from continuing operations $ - $ - $ - Net income from discontinued operations - - - Interest in net income/(loss) $ - $ - $ - Interest in net (loss) for EPU purposes: Net (loss) from continuing operations $ (162 ) $ (4,563 ) $ (3,387 ) Net income from discontinued operations - - - Interest in net (loss) $ (162 ) $ (4,563 ) $ (3,387 ) Denominator: Weighted average units used to compute basic EPU n/a 1,670 1,240 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 1,670 1,240 Net (loss)/income per limited partner unit, basic Net (loss) per unit from continuing operations n/a $ (2.73 ) $ (2.73 ) Net income per unit from discontinued operations n/a - - Net (loss) per common unit, basic n/a $ (2.73 ) $ (2.73 ) Net (loss)/income per limited partner unit, diluted Net (loss) per unit from continuing operations n/a $ (2.73 ) $ (2.73 ) Net income per unit from discontinued operations n/a - - Net (loss) per common unit, diluted n/a $ (2.73 ) $ (2.73 ) Six months ended June 30, 2015 General Partner Common Unitholders Subordinated Unitholders (in thousands, except per unit data) Numerator: Interest in net (loss)/income: Net (loss) from continuing operations $ (253 ) $ (7,128 ) $ (5,293 ) Net income from discontinued operations 14 406 302 Total interest in net income $ (239 ) $ (6,722 ) $ (4,991 ) Impact of subordinated distribution suspension: Net income/(loss) from continuing operations $ 5 $ 140 $ (145 ) Net income from discontinued operations - - - Interest in net income/(loss) $ 5 $ 140 $ (145 ) Interest in net (loss)/income for EPU purposes: Net (loss) from continuing operations $ (248 ) $ (6,988 ) $ (5,438 ) Net income from discontinued operations 14 406 302 Interest in net income $ (234 ) $ (6,582 ) $ (5,136 ) Denominator: Weighted average units used to compute basic EPU n/a 1,669 1,240 Effect of dilutive securities — LTIP awards: Dilutive securities for net income from continuing operations and discontinued operations n/a - - Weighted average units used to compute diluted EPU n/a 1,669 1,240 Net income per limited partner unit, basic Net income per unit from continuing operations n/a $ (4.18 ) $ (4.38 ) Net income per unit from discontinued operations n/a 0.24 0.24 Net income per common unit, basic n/a $ (3.94 ) $ (4.14 ) Net income per limited partner unit, diluted Net income per unit from continuing operations n/a $ (4.18 ) $ (4.38 ) Net income per unit from discontinued operations n/a 0.24 0.24 Net income per common unit, diluted n/a $ (3.94 ) $ (4.14 )

Major Customers (Tables)

Major Customers (Tables)	6 Months Ended
	Jun. 30, 2016
Risks and Uncertainties [Abstract]
Summary of 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): June 30, 2016 December 31, 2015 Six months ended Six months ended Receivable Balance Receivable Balance June 30, 2016 Sales June 30, 2015 Sales (in thousands) PPL Corporation $ 1,274 $ 1,881 $ 20,624 16,335 PacifiCorp Energy 1,009 1,969 10,511 11,810 Big Rivers Electric Corporation 686 n/a 10,119 n/a NRG Energy, Inc. (fka GenOn Energy, Inc.) n/a - n/a 16,336

Supplemental Disclosures of C38

Supplemental Disclosures of Cash Flow Information (Tables)	6 Months Ended
	Jun. 30, 2016
Supplemental Cash Flow Elements [Abstract]
Schedule of Cash Flow Supplemental Disclosures	The unaudited condensed consolidated statement of cash flows for the six months ended June 30, 2015 excludes the removal of the investment in the unconsolidated subsidiary and the recognition of the retained assets and liabilities, which are detailed in the table below. (in thousands) Coal properties (incl asset retirement costs) $ 12,104 Advance royalties, net of current portion 4,706 Other non-current assets - acquired 229 Other non-current assets - written off (642 ) Accrued expenses and other (2,012 ) Asset retirement obligations (1,235 ) Net assets acquired 13,150 Investment in unconsolidated affiliates-Rhino Eastern - written off $ (13,150 )

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2016
Segment Reporting [Abstract]
Schedule of Reportable Segment Results of Operations	Reportable segment results of operations for the three months ended June 30, 2016 are as follows (Note: “DD&A” refers to depreciation, depletion and amortization): Central Northern Rhino Illinois Total Appalachia Appalachia Western Basin Other Consolidated (in thousands) Total revenues $ 6,756 $ 11,581 $ 8,324 $ 16,000 $ 79 $ 42,740 DD&A 1,707 811 1,404 1,867 142 5,931 Interest expense 696 101 102 256 570 1,725 Net income (loss) from continuing operations $ (122,199 ) $ 1,858 $ (30 ) $ (747 ) $ (835 ) $ (121,953 ) Reportable segment results of operations for the six months ended June 30, 2016 are as follows: Central Northern Rhino Illinois Total Appalachia Appalachia Western Basin Other Consolidated (in thousands) Total revenues $ 13,467 $ 20,733 $ 17,921 $ 30,880 $ 168 $ 83,169 DD&A 3,635 1,764 2,815 3,680 284 12,178 Interest expense 1,268 230 188 461 1,152 3,299 Net income (loss) from continuing operations $ (125,948 ) $ 5,839 $ (627 ) $ (1,437 ) $ (1,003 ) $ (123,176 ) Reportable segment results of operations for the three months ended June 30, 2015 are as follows: Central Northern Rhino Illinois Total Appalachia Appalachia Western Basin Other Consolidated (in thousands) Total revenues $ 19,013 $ 16,757 $ 10,092 $ 10,583 $ 320 $ 56,765 DD&A 3,392 1,958 1,619 1,436 191 8,596 Interest expense 456 122 67 136 532 1,313 Net income (loss) from continuing operations $ (3,824 ) $ 1,505 $ (1,232 ) $ (2,648 ) $ (1,913 ) $ (8,112 ) Reportable segment results of operations for the six months ended June 30, 2015 are as follows: Central Northern Rhino Illinois Total Appalachia Appalachia Western Basin Other Consolidated (in thousands) Total revenues $ 41,263 $ 34,088 $ 18,552 $ 17,762 $ 1,284 $ 112,949 DD&A 7,340 3,805 3,229 2,650 424 17,448 Interest expense 847 236 130 255 802 2,270 Net income (loss) from continuing operations $ (4,054 ) $ 2,684 $ (2,529 ) $ (7,188 ) $ (1,587 ) $ (12,674 )

Basis of Presentation and Org40

Basis of Presentation and Organization (Details Narrative) $ / shares in Units, $ in Thousands	May 13, 2016USD ($)	Apr. 18, 2016	Mar. 21, 2016USD ($)$ / sharesshares	Mar. 17, 2016shares	Jan. 21, 2016USD ($)shares
Reverse stock split conversion ratio		10
Common Units [Member]
Reverse stock split conversion ratio		10
Subordinated Units [Member]
Reverse stock split conversion ratio		10
Royal Energy Resources, Inc [Member]
Common stock price per unit | $ / shares			$ 0.30
Number of common units rescind of purchase during the period | shares			13,333,333
Number of common units repurchase during the period | shares			13,333,333
Repurchase options termination date			Dec. 31, 2017
Debt conversion price per share | $ / shares			$ 0.15
Repayment of debt	$ 3,000
Debt due date	Jul. 31, 2016
Wexford Capital L P [Member] | Royal Energy Resources, Inc [Member] | Subordinated Units [Member]
Number of common unit shares acquired during the period | shares				9,455,252
Definitive Agreement [Member] | Royal Energy Resources, Inc [Member] | Wexford Capital L P [Member]
Number of common unit shares acquired during the period | shares					6,769,112
Number of common unit acquired during the period					$ 3,500
Definitive Agreement [Member] | Wexford Capital L P [Member] | Subordinated Units [Member]
Number of common unit shares acquired during the period | shares					9,455,252
Number of common unit acquired during the period					$ 1,000
Securities Purchase Agreement [Member] | Royal Energy Resources, Inc [Member]
Number of common unit shares issued during the period | shares			60,000,000
Common stock price per unit | $ / shares			$ 0.15
Number of common unit issued during the period			$ 9,000
Proceeds from shares issued			2,000
Promissory note payable face value			7,000
Securities Purchase Agreement [Member] | Royal Energy Resources, Inc [Member] | July 31, 2016 [Member]
Promissory note payable periodic amount			3,000
Securities Purchase Agreement [Member] | Royal Energy Resources, Inc [Member] | On or Before September 30, 2016 [Member]
Promissory note payable periodic amount			2,000
Securities Purchase Agreement [Member] | Royal Energy Resources, Inc [Member] | On or Before December 31, 2016 [Member]
Promissory note payable periodic amount			$ 2,000

Summary of Significant Accoun41

Summary of Significant Accounting Policies and General (Details Narrative) $ in Thousands	1 Months Ended			3 Months Ended		6 Months Ended
	Jan. 31, 2015T	Sep. 30, 2014USD ($)	Dec. 31, 2012USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)
Equity in net income (loss) of unconsolidated affiliate				$ (26)	$ 124	$ (105)	$ 265
Mammoth Energy Partners LP [Member]
Equity method investment				1,900	1,900	1,900	1,900
Rhino Eastern LLC [Member] | Membership Transfer Agreement [Member]
Interest acquired	49.00%
Coal reserves | T	34,000,000
Muskie Proppant LLC [Member]
Payments to acquire interest in joint venture			$ 2,000
Sturgeon Acquisitions LLC [Member]
Payments to acquire interest in joint venture		$ 5,000
Ownership interest		100.00%
Equity in net income (loss) of unconsolidated affiliate				$ 26	$ 100	$ 100	$ 300

Discontinued Operations (Detail

Discontinued Operations (Details Narrative) $ in Thousands	1 Months Ended		3 Months Ended		6 Months Ended
	Feb. 28, 2015USD ($)	Jan. 31, 2014USD ($)Entities	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2015USD ($)	Dec. 31, 2011a
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income from discontinued operations						$ 722
Utica Shale Region Of Ohio [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage of ownership interest							5.00%
Gross acreage | a							152,300
Net acreage | a							7,615
Proceeds from sale of interest	$ 700
Blackhawk Midstream Llc [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of interest		$ 8,400
Number of equity interests sold | Entities		2
Percentage of payout interest		5.00%

Prepaid Expenses and Other Cu43

Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Prepaid Expense and Other Assets, Current [Abstract]
Other prepaid expenses	$ 474	$ 682
Debt issuance costs-net		2,155
Prepaid insurance	2,495	1,492
Prepaid leases	57	80
Supply inventory	955	901
Deposits	164	164
Total Prepaid expenses and other	$ 4,145	$ 5,474

Property, Plant and Equipment44

Property, Plant and Equipment (Details Narrative) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Property, Plant and Equipment [Abstract]
Assets impairment charges	$ 118,705	$ 2,179	$ 118,705	$ 2,179

Property, Plant and Equipment -

Property, Plant and Equipment - Property, Plant and Equipment by Major Classification (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Total	$ 476,932	$ 604,514
Less accumulated depreciation, depletion and amortization	(270,038)	(271,007)
Net property, plant and equipment	206,894	333,507
Depreciation Expense-mining And Other Equipment And Related Facilities [Member]
Property, Plant and Equipment [Line Items]
Total	$ 305,606	306,609
Depreciation Expense-mining And Other Equipment And Related Facilities [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful Lives	2 years
Depreciation Expense-mining And Other Equipment And Related Facilities [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful Lives	20 years
Amortization Expense For Mine Development Costs [Member]
Property, Plant and Equipment [Line Items]
Total	$ 60,340	67,277
Amortization Expense For Mine Development Costs [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful Lives	1 year
Amortization Expense For Mine Development Costs [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful Lives	15 years
Coal Properties [Member]
Property, Plant and Equipment [Line Items]
Total	$ 85,087	203,791
Coal Properties [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Useful Lives	1 year
Coal Properties [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Useful Lives	15 years
Land And Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Total	$ 23,752	24,157
Construction Work In Process [Member]
Property, Plant and Equipment [Line Items]
Total	$ 2,147	$ 2,680

Property, Plant and Equipment46

Property, Plant and Equipment - Schedule of Depreciation, Depletion, and Amortization (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Property, Plant and Equipment [Line Items]
Total depreciation, depletion and amortization	$ 5,931	$ 8,596	$ 12,178	$ 17,448
Amortization Expense For Asset Retirement Costs [Member]
Property, Plant and Equipment [Line Items]
Total depreciation, depletion and amortization	(19)	(100)	(61)	(175)
Amortization Expense For Intangible Assets [Member]
Property, Plant and Equipment [Line Items]
Total depreciation, depletion and amortization	8	20	16	40
Depreciation Expense-mining And Other Equipment And Related Facilities [Member]
Property, Plant and Equipment [Line Items]
Total depreciation, depletion and amortization	5,031	7,391	10,327	14,968
Depletion Expense For Coal Properties And Oil And Natural Gas Properties [Member]
Property, Plant and Equipment [Line Items]
Total depreciation, depletion and amortization	532	727	1,114	1,534
Amortization Expense For Mine Development Costs [Member]
Property, Plant and Equipment [Line Items]
Total depreciation, depletion and amortization	$ 379	$ 558	$ 782	$ 1,081

Goodwill and Intangible Asset47

Goodwill and Intangible Assets (Details Narrative)	6 Months Ended
	Jun. 30, 2016
Trade Name And Customer List [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets, useful life	20 years

Goodwill and Intangible Asset48

Goodwill and Intangible Assets - Schedule of Intangible Assets by Major Class (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 654	$ 654
Accumulated Amortization	165	149
Net Carrying Amount	489	505
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	184	184
Accumulated Amortization	46	42
Net Carrying Amount	138	142
Customer List [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	470	470
Accumulated Amortization	119	107
Net Carrying Amount	$ 351	$ 363

Goodwill and Intangible Asset49

Goodwill and Intangible Assets - Schedule of Future Amortization Expense of Intangible Assets (Details) $ in Thousands	Jun. 30, 2016USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
2016 (from Jul 1 to Dec 31)	$ 16
2,017	32
2,018	32
2,019	32
2,020	32
Trade Name [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
2016 (from Jul 1 to Dec 31)	4
2,017	9
2,018	9
2,019	9
2,020	9
Customer List [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
2016 (from Jul 1 to Dec 31)	12
2,017	23
2,018	23
2,019	23
2,020	$ 23

Other Non-Current Assets (Detai

Other Non-Current Assets (Details Narrative) - USD ($) $ in Thousands	1 Months Ended
	May 31, 2016	Mar. 31, 2016	Apr. 30, 2015	Jun. 30, 2016	May 13, 2016	Dec. 31, 2015
Prepaid Expenses And Other Current Assets Disclosure [Line Items]
Debt issuance costs				$ 13,100		$ 11,600
Accumulated amortization of debt issuance costs				10,500		9,400
Workers' compensation insurance receivable				23,908		$ 23,908
Accrued workers' compensation benefits liability balance				$ 23,900
Third Amendment [Member]
Prepaid Expenses And Other Current Assets Disclosure [Line Items]
Credit facility maximum available			$ 100,000
Amendment fee			2,100
Unamortized debt issuance costs written off			$ 200
Fourth Amendment [Member]
Prepaid Expenses And Other Current Assets Disclosure [Line Items]
Credit facility maximum available	$ 75,000	$ 80,000
Amendment fee		400
Unamortized debt issuance costs written off		$ 200
Fifth Amendment [Member]
Prepaid Expenses And Other Current Assets Disclosure [Line Items]
Credit facility maximum available	75,000				$ 75,000
Amendment fee	1,200
Unamortized debt issuance costs written off	$ 100

Other Non-Current Assets - Sche

Other Non-Current Assets - Schedule Of Other Non-Current Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Other Assets, Noncurrent [Abstract]
Deposits and other	$ 154	$ 138
Debt issuance costs-net	2,555
Non-current receivable	23,908	23,908
Note receivable	2,064	2,000
Deferred expenses	234	261
Total	$ 28,915	$ 26,307

Accrued Expenses and Other Cu52

Accrued Expenses and Other Current Liabilities (Details Narrative) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Payables and Accruals [Abstract]
Accrued insured litigation claims	$ 302	$ 266

Accrued Expenses and Other Cu53

Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Payables and Accruals [Abstract]
Payroll, bonus and vacation expense	$ 1,451	$ 1,447
Non income taxes	3,576	3,774
Royalty expenses	1,466	1,566
Accrued interest	1,120	575
Health claims	839	817
Workers’ compensation & pneumoconiosis	1,150	1,150
Deferred revenues	1,800	2,260
Accrued insured litigation claims	302	266
Other	519	2,247
Total	$ 12,223	$ 14,102

Debt (Details Narrative)

Debt (Details Narrative) $ / shares in Units, $ in Thousands	May 13, 2016USD ($)	Jul. 29, 2011USD ($)	Jun. 30, 2016USD ($)	May 31, 2016USD ($)	Mar. 31, 2016USD ($)	Apr. 30, 2015USD ($)$ / shares	Sep. 30, 2015	Jun. 30, 2016USD ($)	Dec. 31, 2015USD ($)
Line of Credit Facility [Line Items]
Line of credit facility, amount outstanding			$ 37,750					$ 37,750	$ 41,200
First Amendment [Member]
Line of Credit Facility [Line Items]
Credit facility, maximum available		$ 300,000
Line of credit facility option to increase maximum borrowing capacity		50,000
First Amendment [Member] | Letter Of Credit [Member]
Line of Credit Facility [Line Items]
Credit facility, maximum available		$ 75,000
Fourth Amendment [Member]
Line of Credit Facility [Line Items]
Credit facility, maximum available				$ 75,000	$ 80,000
Incremental interest rate above variable rate					3.50%
Line of credit facility, expiration date				Jul. 31, 2017
Line of credit facility,extended expiration date				Dec. 31, 2017
Line of credit facility, maximum leverage ratio related to limited investments					3
Amendment fee					$ 400
Unamortized debt issuance costs written off					$ 200
Line of credit facility, maximum leverage ratio					6.75
Line of credit facility maximum leverage ratio reduction when threshold met					0.50
Line of credit facility, threshold for reduction of maximum leverage ratio					$ 10,000
Line of credit facility, miniumum liquidity					5,000
Liquidity					8,000
Line of credit facility, maximum capital expenditures					$ 15,000
Fourth Amendment [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum leverage ratio					3
Fourth Amendment [Member] | Prime Rate [Member]
Line of Credit Facility [Line Items]
Incremental interest rate above variable rate			3.50%		3.50%
Fourth Amendment [Member] | Letter Of Credit [Member]
Line of Credit Facility [Line Items]
Credit facility, maximum available				$ 30,000
Fourth Amendment [Member] | Letters Of Credit [Member]
Line of Credit Facility [Line Items]
Credit facility, maximum available					$ 30,000
Third Amendment [Member]
Line of Credit Facility [Line Items]
Credit facility, maximum available						$ 100,000
Line of credit facility, threshold for proceeds from disposition of assets that determines amount used to reduce commitments						35,000
Line of credit facility, amount by which commitments must be reduced if proceeds from sale of assets are below threshold						$ 10,000
Line of credit facility, maximum quarterly distributions per unit | $ / shares						$ 0.035
Line of credit facility, maximum leverage ratio related to limited investments						3
Line of credit facility, minimum borrowing availability required for distributions in excess of maximum stated amount						$ 20,000
Line of credit facility, minimum fixed charge coverage ratio							1.1
Line of credit facility, maximum investments						$ 10,000
Line of credit facility, maximum leverage ratio required for distributions in excess of maximum stated amount						3
Line of credit facility, minimum available liquidity for limited investments						$ 20,000
Line of credit facility, maximum capital expenditures for remainder of fiscal year						20,000
Line of credit facility maximum capital expenditures after current fiscal year						27,500
Line of credit facility, maximum carryover of unused capital expenditures						5,000
Amendment fee						2,100
Unamortized debt issuance costs written off						200
Third Amendment [Member] | Letter Of Credit [Member]
Line of Credit Facility [Line Items]
Credit facility, maximum available						$ 50,000
Fifth Amendment [Member]
Line of Credit Facility [Line Items]
Credit facility, maximum available	$ 75,000			75,000
Amendment fee				1,200
Unamortized debt issuance costs written off				$ 100
Line of credit facility maximum leverage ratio reduction when threshold met	0.50
Line of credit facility, threshold for reduction of maximum leverage ratio	$ 10,000
Threshold for revolving credit commitments	55,000
Amount of proceeds from equity issuance that will be used to satisfy schedule capital contributions	11,000
Covenant compliance, asset sales	$ 5,000
Outstanding letters of credit			$ 27,800					$ 27,800
Fixed interest rate			5.00%					5.00%
Maximum borrowing capacity measured as a multiple of EBITDA								7.25
EBITDA measurement period for determining maximum borrowing capacity								12 months
Line of credit facility, remaining borrowing capacity			$ 6,700					$ 6,700
Fifth Amendment [Member] | Royal Energy Resources Inc. [Member] | September 30, 2016 [Member]
Line of Credit Facility [Line Items]
Partner's required capital contribution			2,000					2,000
Fifth Amendment [Member] | Royal Energy Resources Inc. [Member] | December 31, 2016 [Member]
Line of Credit Facility [Line Items]
Partner's required capital contribution			2,000					2,000
Fifth Amendment [Member] | Royal Energy Resources Inc. [Member] | March 31, 2017 [Member]
Line of Credit Facility [Line Items]
Partner's required capital contribution			2,000					2,000
Fifth Amendment [Member] | Royal Energy Resources Inc. [Member] | June 30, 2017 [Member]
Line of Credit Facility [Line Items]
Partner's required capital contribution			2,000					2,000
Fifth Amendment [Member] | Royal Energy Resources Inc. [Member] | September 30, 2017 [Member]
Line of Credit Facility [Line Items]
Partner's required capital contribution			2,000					2,000
Fifth Amendment [Member] | Royal Energy Resources Inc. [Member] | December 1, 2017 [Member]
Line of Credit Facility [Line Items]
Partner's required capital contribution			1,000					$ 1,000
Fifth Amendment [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum leverage ratio	3.50
Fifth Amendment [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Proceeds from issuance of equity that will be used to reduce credit commitments	$ 20,000
Covenant compliance, general and administrative costs incurred by general partner	300
Fifth Amendment [Member] | Prime Rate [Member]
Line of Credit Facility [Line Items]
Incremental interest rate above variable rate								3.50%
Line of credit facility, amount outstanding			$ 37,800					$ 37,800
Effective interest rate			7.00%					7.00%
Fifth Amendment [Member] | Letter Of Credit [Member]
Line of Credit Facility [Line Items]
Credit facility, maximum available	$ 30,000

Debt - Schedule Of Debt (Detail

Debt - Schedule Of Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Debt Disclosure [Abstract]
Senior secured credit facility with PNC Bank, N.A.	$ 37,750	$ 41,200
Other notes payable	2,763	2,874
Total	40,513	44,074
Less current portion	(288)	(41,479)
Long-term debt	$ 40,225	$ 2,595

Debt - Schedule of Changes to B

Debt - Schedule of Changes to Borrowing Capacity of Credit Facility (Details) - Fifth Amendment [Member] $ in Thousands	Jun. 30, 2016USD ($)
September 30, 2016 [Member]
Scheduled amount of decrease in borrowing capacity	$ 2,000
Scheduled amount of decrease in borrowing capacity, less proceeds from issuance of equity	2,000
December 31, 2016 [Member]
Scheduled amount of decrease in borrowing capacity	2,000
Scheduled amount of decrease in borrowing capacity, less proceeds from issuance of equity	4,000
March 31, 2017 [Member]
Scheduled amount of decrease in borrowing capacity	2,000
Scheduled amount of decrease in borrowing capacity, less proceeds from issuance of equity	6,000
June 30, 2017 [Member]
Scheduled amount of decrease in borrowing capacity	2,000
Scheduled amount of decrease in borrowing capacity, less proceeds from issuance of equity	8,000
September 30, 2017 [Member]
Scheduled amount of decrease in borrowing capacity	2,000
Scheduled amount of decrease in borrowing capacity, less proceeds from issuance of equity	10,000
December 1, 2017 [Member]
Scheduled amount of decrease in borrowing capacity	1,000
Scheduled amount of decrease in borrowing capacity, less proceeds from issuance of equity	$ 11,000

Debt - Schedule of Changes to M

Debt - Schedule of Changes to Maximum Leverage Ratio Allowed by Credit Facility Covenants (Details) - Fifth Amendment [Member]	6 Months Ended
	Jun. 30, 2016
For The Month Ending April 30, 2016, Through The Month Ending May 31, 2016 [Member]
Line of credit facility, maximum leverage ratio	7.50
For the Month Ending June 30, 2016, Through the Month Ending August 31, 2016 [Member]
Line of credit facility, maximum leverage ratio	7.25
For The Month Ending September 30, 2016, Through The Month Ending November 30, 2016 [Member]
Line of credit facility, maximum leverage ratio	7
For The Month Ending December 31, 2016, Through The Month Ending March 31, 2017 [Member]
Line of credit facility, maximum leverage ratio	6.75
For The Month Ending April 30, 2017, Through The Month Ending June 30, 2017 [Member]
Line of credit facility, maximum leverage ratio	6.25
For The Month Ending July 31, 2017, Through The Month Ending November 30, 2017 [Member]
Line of credit facility, maximum leverage ratio	6
For The Month Ending December 31, 2017 [Member]
Line of credit facility, maximum leverage ratio	5.50

Asset Retirement Obligations -

Asset Retirement Obligations - Schedule of Asset Retirement Obligations (Details) - USD ($) $ in Thousands		6 Months Ended		12 Months Ended
		Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015	Jun. 30, 2016	Dec. 31, 2015
Asset Retirement Obligation Disclosure [Abstract]
Balance at beginning of period (including current portion)		$ 23,747	$ 29,883	$ 29,883
Accretion expense		763	1,101	2,082
Adjustment resulting from addition of property				1,235
Adjustment resulting from disposal of property	[1]			(6,861)
Adjustments to the liability from annual recosting and other				(2,078)
Liabilities settled		(142)		(514)
Balance at end of period		$ 23,747	$ 29,883	$ 29,883	$ 24,368	$ 23,747
Less current portion of asset retirement obligation					(1,646)	(767)
Long-term portion of asset retirement obligation					$ 22,722	$ 22,980
[1]	The ($6.9) million adjustment for the year ended December 31, 2015 relates to the sale of the Partnership's Deane mining complex.

Asset Retirement Obligations 59

Asset Retirement Obligations - Schedule of Asset Retirement Obligations (Details) (Parenthetical) - USD ($) $ in Thousands		6 Months Ended	12 Months Ended
		Jun. 30, 2016	Dec. 31, 2015
Asset Retirement Obligation Disclosure [Abstract]
Adjustment from sale of property	[1]		$ 6,861
[1]	The ($6.9) million adjustment for the year ended December 31, 2015 relates to the sale of the Partnership's Deane mining complex.

Employee Benefits (Details Narr

Employee Benefits (Details Narrative) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Dec. 10, 2015
Compensation and Retirement Disclosure [Abstract]
Prior service cost benefit		$ 6,500
Benefit recognized	$ 3,900

Employee Benefits - Components

Employee Benefits - Components of Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]
Service costs		$ 67		$ 135
Interest cost		51		101
Amortization of (gain)		(44)	(4,796)	(89)
Total		$ 74	$ (4,796)	$ 147

Employee Benefits - Schedule of

Employee Benefits - Schedule of Expense Under Defined Contribution Savings Plans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Compensation and Retirement Disclosure [Abstract]
401(k) plan expense	$ 405	$ 595	$ 713	$ 1,153

Equity-Based Compensation (Deta

Equity-Based Compensation (Details Narrative) - USD ($) $ in Thousands	Mar. 17, 2016	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Accelerated vesting expense	$ 10
Equity-based compensation expense		$ 600
Royal Energy Resources Inc. [Member] | Wexford Capital L P [Member] | Subordinated Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common unit shares acquired during the period	9,455,252

Commitments and Contingencies64

Commitments and Contingencies (Details Narrative) $ in Thousands	3 Months Ended
	Sep. 30, 2014USD ($)
Sturgeon Acquisitions [Member]
Commitments And Contingencies [Line Items]
Payments to acquire interest in joint venture	$ 5,000

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Delivery Commitments (Details)	6 Months Ended
	Jun. 30, 2016CustomersT
Commitments and Contingencies Disclosure [Abstract]
Tons, 2016 Q3-Q4 | T	1,702,000
Tons, 2017 | T	1,826,000
Tons, 2018 | T	414,000
Number of customers, 2016 Q3-Q4 | Customers	13
Number of customers, 2017 | Customers	4
Number of customers, 2018 | Customers	2

Commitments and Contingencies66

Commitments and Contingencies - Schedule of Lease And Royalty Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Lease expense	$ 1,049	$ 1,298	$ 2,092	$ 2,419
Royalty expense	$ 2,606	$ 3,592	$ 4,948	$ 6,426

Earnings Per Unit ('EPU') (Deta

Earnings Per Unit ('EPU') (Details Narrative)	Apr. 18, 2016
Earnings Per Unit [Abstract]
Reverse stock split conversion ratio	10

Earnings Per Unit ('EPU') - Sch

Earnings Per Unit ('EPU') - Schedule of Calculation of Numerator and Denominator in Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Earnings Per Unit [Line Items]
Interest in net (loss)/income: Net (loss) from continuing operations	$ (121,953)	$ (8,112)	$ (123,176)	$ (12,674)
Interest in net (loss)/income: Net income from discontinued operations				722
Interest in net (loss)/income: Total interest in net income (loss)	(121,953)	(8,112)	(123,176)	(11,952)
General Partner [Member]
Earnings Per Unit [Line Items]
Interest in net (loss)/income: Net (loss) from continuing operations	(808)	(162)	(832)	(253)
Interest in net (loss)/income: Net income from discontinued operations				14
Interest in net (loss)/income: Total interest in net income (loss)	(808)	(162)	(832)	(239)
Impact of subordinated distribution suspension: Net income/(loss) from continuing operations				5
Impact of subordinated distribution suspension: Net income/(loss) from discontinued continuing operations
Impact of subordinated distribution suspension: Interest in net income/(loss)				5
Interest in net (loss)/income for EPU purposes: Net income/(loss) from continuing operations	(808)	(162)	(832)	(248)
Interest in net (loss)/income for EPU purposes: Net income from discontinued operations				14
Interest in net (loss)/income for EPU purposes: Interest in net (loss)/income	(808)	(162)	(832)	(234)
Common Unitholders [Member]
Earnings Per Unit [Line Items]
Interest in net (loss)/income: Net (loss) from continuing operations	(104,558)	(4,563)	(89,511)	(7,128)
Interest in net (loss)/income: Net income from discontinued operations				406
Interest in net (loss)/income: Total interest in net income (loss)	(104,558)	(4,563)	(89,511)	(6,722)
Impact of subordinated distribution suspension: Net income/(loss) from continuing operations				140
Impact of subordinated distribution suspension: Net income/(loss) from discontinued continuing operations
Impact of subordinated distribution suspension: Interest in net income/(loss)				140
Interest in net (loss)/income for EPU purposes: Net income/(loss) from continuing operations	(104,558)	(4,563)	(89,511)	(6,988)
Interest in net (loss)/income for EPU purposes: Net income from discontinued operations				402
Interest in net (loss)/income for EPU purposes: Interest in net (loss)/income	$ (104,558)	$ (4,563)	$ (89,511)	$ (6,582)
Weighted average units used to compute basic EPU	7,788,000	1,670,000	3,368,000	1,669,000
Weighted average units used to compute diluted EPU	7,788,000	1,670,000	3,368,000	1,669,000
Net (loss) per unit from continuing operations	$ (13.42)	$ (2.73)	$ (26.57)	$ (4.18)
Net income per unit from discontinued operations				0.24
Net (loss)/income per common unit, basic	(13.42)	(2.73)	(26.57)	(3.94)
Net (loss)/income per unit from continuing operations	(13.42)	(2.73)	(26.57)	(4.18)
Net income per unit from discontinued operations				0.24
Net income per common unit, diluted	$ (13.42)	$ (2.73)	$ (26.57)	$ (3.94)
Subordinated Unitholders [Member]
Earnings Per Unit [Line Items]
Interest in net (loss)/income: Net (loss) from continuing operations	$ (16,587)	$ (3,387)	$ (32,833)	$ (5,293)
Interest in net (loss)/income: Net income from discontinued operations				302
Interest in net (loss)/income: Total interest in net income (loss)	(16,587)	(3,387)	(32,833)	(4,991)
Impact of subordinated distribution suspension: Net income/(loss) from continuing operations				(145)
Impact of subordinated distribution suspension: Net income/(loss) from discontinued continuing operations
Impact of subordinated distribution suspension: Interest in net income/(loss)				(145)
Interest in net (loss)/income for EPU purposes: Net income/(loss) from continuing operations	(16,587)	(3,387)	(32,833)	(5,438)
Interest in net (loss)/income for EPU purposes: Net income from discontinued operations				302
Interest in net (loss)/income for EPU purposes: Interest in net (loss)/income	$ (16,587)	$ (3,387)	$ (32,833)	$ (5,136)
Weighted average units used to compute basic EPU	1,236,000	1,240,000	1,236,000	1,240,000
Weighted average units used to compute diluted EPU	1,236,000	1,240,000	1,236,000	1,240,000
Net (loss) per unit from continuing operations	$ (13.42)	$ (2.73)	$ (26.57)	$ (4.38)
Net income per unit from discontinued operations				0.24
Net (loss)/income per common unit, basic	(13.42)	(2.73)	(26.57)	(4.14)
Net (loss)/income per unit from continuing operations	(13.42)	(2.73)	(26.57)	(4.38)
Net income per unit from discontinued operations				0.24
Net income per common unit, diluted	$ (13.42)	$ (2.73)	$ (26.57)	$ (4.14)

Major Customers - Summary of Ma

Major Customers - Summary of Major Customers (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Revenue, Major Customer [Line Items]
Receivable balance	$ 13,234		$ 13,234		$ 14,569
Revenue	42,740	$ 56,765	83,169	$ 112,949
PPL Corporation [Member]
Revenue, Major Customer [Line Items]
Receivable balance	1,274		1,274		1,881
Revenue			20,624	16,335
PacifiCorp Energy [Member]
Revenue, Major Customer [Line Items]
Receivable balance	1,009		1,009		$ 1,969
Revenue			10,511	11,810
Big Rivers Electric Corporation [Member]
Revenue, Major Customer [Line Items]
Receivable balance	$ 686		686
Revenue			$ 10,119
NRG Energy, Inc [Member]
Revenue, Major Customer [Line Items]
Revenue				$ 16,336

Major Customers - Summary of 70

Major Customers - Summary of Major Customers (Details) (Parenthetical)	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
PPL Corporation [Member]
Percentage of concentration risk	10.00%	10.00%
PacifiCorp Energy [Member]
Percentage of concentration risk	10.00%	10.00%
Big Rivers Electric Corporation [Member]
Percentage of concentration risk	10.00%
NRG Energy, Inc [Member]
Percentage of concentration risk		10.00%

Supplemental Disclosures of C71

Supplemental Disclosures of Cash Flow Information (Details Narrative) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Accounts Payable [Member]
Other Significant Noncash Transactions [Line Items]
Property additions	$ 1,200	$ 400

Supplemental Disclosures of C72

Supplemental Disclosures of Cash Flow Information - Schedule of Cash Flow Supplemental Disclosures (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2016	Dec. 31, 2015
Other Significant Noncash Transactions [Line Items]
Coal properties (incl asset retirement costs)		$ 476,932	$ 604,514
Advance royalties, net of current portion		849	753
Other non-current assets - acquired		$ 28,915	$ 26,307
Rhino Eastern [Member]
Other Significant Noncash Transactions [Line Items]
Coal properties (incl asset retirement costs)	$ 12,104
Advance royalties, net of current portion	4,706
Other non-current assets - acquired	229
Other non-current assets - written off	(642)
Accrued expenses and other	(2,012)
Asset retirement obligations	(1,235)
Net assets acquired	13,150
Investment in unconsolidated affiliates-Rhino Eastern - written off	$ (13,150)

Segment Information (Details Na

Segment Information (Details Narrative)	6 Months Ended
	Jun. 30, 2016Segments
Segment Reporting [Abstract]
Number of reportable business segments	4

Segment Information - Schedule

Segment Information - Schedule of Reportable Segment Results of Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Segment Reporting Information [Line Items]
Total revenues	$ 42,740	$ 56,765	$ 83,169	$ 112,949
DD&A	5,931	8,596	12,178	17,448
Interest expense	1,725	1,313	3,299	2,270
Net Income (loss) from continuing operations	(121,953)	(8,112)	(123,176)	(12,674)
Central Appalachia [Member]
Segment Reporting Information [Line Items]
Total revenues	6,756	19,013	13,467	41,263
DD&A	1,707	3,392	3,635	7,340
Interest expense	696	456	1,268	847
Net Income (loss) from continuing operations	(122,199)	(3,824)	(125,948)	(4,054)
Northern Appalachia [Member]
Segment Reporting Information [Line Items]
Total revenues	11,581	16,757	20,733	34,088
DD&A	811	1,958	1,764	3,805
Interest expense	101	122	230	236
Net Income (loss) from continuing operations	1,858	1,505	5,839	2,684
Rhino Western [Member]
Segment Reporting Information [Line Items]
Total revenues	8,324	10,092	17,921	18,552
DD&A	1,404	1,619	2,815	3,229
Interest expense	102	67	188	130
Net Income (loss) from continuing operations	(30)	(1,232)	(627)	(2,529)
Illinois Basin [Member]
Segment Reporting Information [Line Items]
Total revenues	16,000	10,583	30,880	17,762
DD&A	1,867	1,436	3,680	2,650
Interest expense	256	136	461	255
Net Income (loss) from continuing operations	(747)	(2,648)	(1,437)	(7,188)
Segment Other [Member]
Segment Reporting Information [Line Items]
Total revenues	79	320	168	1,284
DD&A	142	191	284	424
Interest expense	570	532	1,152	802
Net Income (loss) from continuing operations	$ (835)	$ (1,913)	$ (1,003)	$ (1,587)

Subsequent Events (Details Narr

Subsequent Events (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands		Jul. 07, 2016	Jun. 30, 2016	Jun. 30, 2015	Sep. 30, 2014	Jun. 30, 2016	Jun. 30, 2015
Subsequent Event [Line Items]
Cash distribution	[1]			$ 0.02			$ 0.07
Distribution arrearages outstanding			$ 114,200			$ 114,200
Subordinated Units [Member]
Subsequent Event [Line Items]
Cash distribution						$ 0
Common Units [Member]
Subsequent Event [Line Items]
Cash distribution						0
Minimum required distributions per unit					$ 0.445	$ 0.445
Subsequent Event [Member] | Third Party [Member]
Subsequent Event [Line Items]
Other notes payable		$ 2,800
Settlement of debt on cash consideration		1,100
Repayment of debt		1,100
Gain from extinguishment of debt		$ 1,700
[1]	No distributions were paid on the subordinated units for the three and six months ended June 30, 2016 and 2015