Rhino Resource Partners 10-Q 9 Nov 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Nov. 02, 2018
Entity Registrant Name	Rhino Resource Partners LP
Entity Central Index Key	1,490,630
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business Flag	true
Entity Emerging Growth Company	false
Entity Ex Transition Period	false
Trading Symbol	RHNO
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2,018
Common Units [Member]
Entity Common Stock, Shares Outstanding		13,098,353
Subordinated Units [Member]
Entity Common Stock, Shares Outstanding		1,145,743

Condensed Consolidated Statemen

Condensed Consolidated Statements of Financial Position (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
CURRENT ASSETS:
Cash and cash equivalents	$ 5,568	$ 8,796
Restricted cash		7,116
Accounts receivable, net of allowance for doubtful accounts ($0.3 million as of September 30, 2018 and -0- as of December 31, 2017)	25,410	20,386
Inventories	9,542	12,860
Advance royalties, current portion	852	495
Investment in available for sale securities	3,029	11,165
Prepaid expenses and other	3,663	2,891
Total current assets	48,064	63,709
PROPERTY, PLANT AND EQUIPMENT:
At cost, including coal properties, mine development and construction costs	450,307	440,843
Less accumulated depreciation, depletion and amortization	(273,518)	(263,520)
Net property, plant and equipment	176,789	177,323
Advance royalties, net of current portion	7,837	7,901
Deposits - Workers' Compensation and Surety Programs	8,209
Investment in unconsolidated affiliates		130
Restricted cash		5,209
Other non-current assets	29,354	28,508
TOTAL	270,253	282,780
CURRENT LIABILITIES:
Accounts payable	18,661	9,329
Accrued expenses and other	10,516	11,186
Accrued preferred distributions	1,788	6,038
Current portion of long-term debt	7,595	5,475
Current portion of asset retirement obligations	498	498
Total current liabilities	39,058	32,526
NON-CURRENT LIABILITIES:
Long-term debt, net of current portion	23,195	28,573
Asset retirement obligations, net of current portion	18,859	18,164
Other non-current liabilities	48,386	48,071
Total non-current liabilities	90,440	94,808
Total liabilities	129,498	127,334
COMMITMENTS AND CONTINGENCIES (NOTE 13)
PARTNERS' CAPITAL:
Limited partners	118,339	130,233
General partner	8,804	8,855
Preferred partners	15,000	15,000
Investment in Royal common stock (NOTE 11)	(4,126)	(4,126)
Common unit warrants	1,264	1,264
Accumulated other comprehensive income	1,474	4,220
Total partners' capital	140,755	155,446
TOTAL	$ 270,253	$ 282,780

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Financial Position (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 300	$ 0

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
REVENUES:
Total revenues	$ 72,565	$ 56,686	$ 182,289	$ 162,918
COSTS AND EXPENSES:
Cost of operations (exclusive of depreciation, depletion and amortization shown separately below)	60,786	44,751	160,031	132,939
Freight and handling costs	5,848	1,237	8,225	1,832
Depreciation, depletion and amortization	5,629	5,060	16,733	16,037
Selling, general and administrative (exclusive of depreciation, depletion and amortization shown separately above)	2,785	2,663	8,281	8,419
(Gain) on sale/disposal of assets-—net	(784)	(83)	(7,217)	(38)
Total costs and expenses	74,264	53,628	186,053	159,189
(LOSS)/INCOME FROM OPERATIONS	(1,699)	3,058	(3,764)	3,729
INTEREST AND OTHER EXPENSE/(INCOME):
Interest expense	2,831	1,011	6,629	3,131
Interest income and other		(86)	(7)	(86)
Equity in net (income) of unconsolidated affiliates				(36)
Total interest and other expense	2,831	925	6,622	3,009
NET (LOSS)/INCOME BEFORE INCOME TAXES FROM CONTINUING OPERATIONS	(4,530)	2,133	(10,386)	720
INCOME TAXES
NET (LOSS)/INCOME FROM CONTINUING OPERATIONS	(4,530)	2,133	(10,386)	720
DISCONTINUED OPERATIONS (NOTE 3)
Loss from discontinued operations		(461)		(787)
NET (LOSS)/INCOME	(4,530)	1,672	(10,386)	(67)
Other comprehensive (loss)/income:
Fair market value adjustment for available-for-sale investment	(506)	(990)	3,874	1,030
Reclass for disposition			(6,621)
Total other comprehensive (loss)/income	(506)	(990)	(2,747)	1,030
COMPREHENSIVE (LOSS)/INCOME	(5,036)	682	(13,133)	963
General Partner's [Member]
INTEREST AND OTHER EXPENSE/(INCOME):
NET (LOSS)/INCOME FROM CONTINUING OPERATIONS	(24)	2	(51)	(15)
DISCONTINUED OPERATIONS (NOTE 3)
Loss from discontinued operations		(1)		(3)
NET (LOSS)/INCOME	$ (24)	$ 1	$ (51)	$ (18)
Net (loss)/income per limited partner unit, basic:
Net (loss)/income per unit from continuing operations
Net (loss)/income per unit from discontinued operations
Net (loss)/income per unit, basic
Net (loss)/income per limited partner unit, diluted:
Net (loss)/income per unit from continuing operations
Net (loss)/income per unit from discontinued operations
Net (loss)/income per unit, diluted
Weighted average number of limited partner units outstanding, basic
Weighted average number of limited partner units outstanding, diluted
Common Unitholders' [Member]
INTEREST AND OTHER EXPENSE/(INCOME):
NET (LOSS)/INCOME FROM CONTINUING OPERATIONS	$ (5,228)	$ 445	$ (11,144)	$ (3,088)
DISCONTINUED OPERATIONS (NOTE 3)
Loss from discontinued operations		(420)		(715)
NET (LOSS)/INCOME	$ (5,228)	$ 25	$ (11,144)	$ (3,803)
Net (loss)/income per limited partner unit, basic:
Net (loss)/income per unit from continuing operations	$ (0.40)	$ 0.03	$ (0.86)	$ (0.24)
Net (loss)/income per unit from discontinued operations		(0.03)		(0.05)
Net (loss)/income per unit, basic	(0.40)		(0.86)	(0.29)
Net (loss)/income per limited partner unit, diluted:
Net (loss)/income per unit from continuing operations	(0.40)	0.03	(0.86)	(0.24)
Net (loss)/income per unit from discontinued operations		(0.03)		(0.05)
Net (loss)/income per unit, diluted	$ (0.40)		$ (0.86)	$ (0.29)
Weighted average number of limited partner units outstanding, basic	13,098,000	12,994,000	13,035,000	12,942,000
Weighted average number of limited partner units outstanding, diluted	13,098,000	12,994,000	13,035,000	12,942,000
Subordinated Unitholders' [Member]
INTEREST AND OTHER EXPENSE/(INCOME):
NET (LOSS)/INCOME FROM CONTINUING OPERATIONS	$ (457)	$ 42	$ (979)	$ (295)
DISCONTINUED OPERATIONS (NOTE 3)
Loss from discontinued operations		(40)		(69)
NET (LOSS)/INCOME	$ (457)	$ 2	$ (979)	$ (364)
Net (loss)/income per limited partner unit, basic:
Net (loss)/income per unit from continuing operations	$ (0.40)	$ 0.03	$ (0.86)	$ (0.24)
Net (loss)/income per unit from discontinued operations		(0.03)		(0.05)
Net (loss)/income per unit, basic	(0.40)		(0.86)	(0.29)
Net (loss)/income per limited partner unit, diluted:
Net (loss)/income per unit from continuing operations	(0.40)	0.03	(0.86)	(0.24)
Net (loss)/income per unit from discontinued operations		(0.03)		(0.05)
Net (loss)/income per unit, diluted	$ (0.40)		$ (0.86)	$ (0.29)
Weighted average number of limited partner units outstanding, basic	1,146,000	1,236,000	1,146,000	1,236,000
Weighted average number of limited partner units outstanding, diluted	1,146,000	1,236,000	1,146,000	1,236,000
Preferred Unitholders' [Member]
INTEREST AND OTHER EXPENSE/(INCOME):
NET (LOSS)/INCOME FROM CONTINUING OPERATIONS	$ 1,179	$ 1,644	$ 1,788	$ 4,118
DISCONTINUED OPERATIONS (NOTE 3)
Loss from discontinued operations
NET (LOSS)/INCOME	$ 1,179	$ 1,644	$ 1,788	$ 4,118
Net (loss)/income per limited partner unit, basic:
Net (loss)/income per unit from continuing operations	$ 0.79	$ 1.10	$ 1.19	$ 2.75
Net (loss)/income per unit from discontinued operations
Net (loss)/income per unit, basic	0.79	1.10	1.19	2.75
Net (loss)/income per limited partner unit, diluted:
Net (loss)/income per unit from continuing operations	0.79	1.10	1.19	2.75
Net (loss)/income per unit from discontinued operations
Net (loss)/income per unit, diluted	$ 0.79	$ 1.10	$ 1.19	$ 2.75
Weighted average number of limited partner units outstanding, basic	1,500,000	1,500,000	1,500,000	1,500,000
Weighted average number of limited partner units outstanding, diluted	1,500,000	1,500,000	1,500,000	1,500,000
Coal Sales [Member]
REVENUES:
Total revenues	$ 71,866	$ 56,266	$ 180,383	$ 161,820
Other Revenues [Member]
REVENUES:
Total revenues	$ 699	$ 420	$ 1,906	$ 1,098

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss)	$ (4,530)	$ 1,672	$ (10,386)	$ (67)
Adjustments to reconcile net (loss) to net cash provided by operating activities:
Depreciation, depletion and amortization			16,733	16,495
Accretion on asset retirement obligations			954	1,422	$ 1,493
Amortization of advance royalties			502	876
Amortization of debt issuance costs			1,432	1,068
Provision for doubtful accounts			294
Amortization of debt discount			316
Equity in net loss/(income) of unconsolidated affiliates				(36)
Loss on retirement of advance royalties			108	136
(Gain) on sale/disposal of assets-—net			(719)	(40)
(Gain) on sale of Mammoth shares			(6,498)
Equity based compensation			230	260
Changes in assets and liabilities:
Accounts receivable			(5,223)	(4,820)
Inventories			3,319	(3,285)
Advance royalties			(904)	(962)
Prepaid expenses and other assets			(1,618)	(1,923)
Accounts payable			8,865	1,239
Accrued expenses and other liabilities			391	2,888
Asset retirement obligations			(259)	(34)
Net cash provided by operating activities			7,537	13,217
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to property, plant, and equipment			(20,525)	(14,306)
Proceeds from sales of property, plant, and equipment			4,802	506
Proceeds from business disposal				890
Proceeds from sale of Mammoth shares			11,887
Net cash used in investing activities			(3,836)	(12,910)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings on line of credit				98,350
Repayments on line of credit				(98,450)
Proceeds from short-term borrowing			5,000
Repayments on long-term debt			(10,208)
Proceeds from issuance of other debt			1,622
Repayments on other debt			(540)
Deposit for workers’ compensation and surety programs			(8,209)
Payments on debt issuance costs			(879)	(227)
Preferred distributions paid			(6,039)
Net cash used in financing activities			(19,253)	(327)
NET (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH			(15,552)	(20)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH—-Beginning of period			21,120	47	47
CASH, CASH EQUIVALENTS AND RESTRICTED CASH—-End of period	5,568	27	5,568	27	21,120
Summary Statement of Financial Position:
Cash and cash equivalents						$ 5,568	$ 8,796	$ 27
Restricted cash							7,116
Total cash, cash equivalents and restricted cash	$ 5,568	$ 27	$ 5,568	$ 27	$ 21,120	$ 5,568	$ 21,120	$ 27

Basis of Presentation and Organ

Basis of Presentation and Organization	9 Months Ended
	Sep. 30, 2018
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. Cash, Cash Equivalents and Restricted Cash. Statement of Cash Flows-Restricted Cash Unaudited Interim Financial Information. Reclassifications. Organization. Through a series of transactions completed in the first quarter of 2016, Royal Energy Resources, Inc. (“Royal”) acquired a majority ownership and control of the Partnership and 100% ownership of the Partnership’s general partner. The Partnership’s common units trade on the OTCQB Marketplace under the ticker symbol “RHNO.”

Summary of Significant Accounti

Summary of Significant Accounting Policies and General	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies and General	2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND GENERAL Revenue Recognition. Freight and handling costs paid directly to third-party carriers and invoiced separately to coal customers are recorded as freight and handling costs and freight and handling revenues, respectively. Freight and handling costs billed to customers as part of the contractual per ton revenue of customer contracts is included in coal sales revenue. Other revenues generally consist of coal royalty revenues, coal handling and processing revenues, rebates and rental income. With respect to other revenues recognized in situations unrelated to the shipment of coal, the Partnership carefully reviews the facts and circumstances of each transaction and does not recognize revenue until the following criteria are met: persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the seller’s price to the buyer is fixed or determinable and collectability is reasonably assured. Investments in Unconsolidated Affiliates. Recently Issued Accounting Standards. Leases (Topic 842) In January 2017, the FASB issued ASU 2017-01, “Business Combinations (Topic 805).” ASU 2017-01 clarifies the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. ASU 2017-01 is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Partnership has adopted this standard on its unaudited condensed consolidated financial statements, which has no current period impact but may impact future periods in which acquisitions are completed. In July 2017, the FASB issued ASU 2017-11, “Earnings Per Share (Topic 260): Distinguishing Liabilities from Equity (Topic 480), I. Derivatives and Hedging (Topic 815): Accounting for Certain Financial Instruments with Down Round Features and II. Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling Interests with a Scope Exception.” Part I of ASU 2017-11 will result in freestanding equity-linked financial instruments, such as warrants, and conversion options in convertible debt or preferred stock to no longer be accounted for as a derivative liability at fair value as a result of the existence of a down round feature. For freestanding equity-classified financial instruments, the amendments require entities that present earnings per share (EPS) in accordance with Topic 260 to recognize the effect of the down round feature when it is triggered. That effect is treated as a dividend and as a reduction of income available to common shareholders in basic EPS. The amendments in Part II recharacterize the indefinite deferral of certain provisions of Topic 480 that now are presented as pending content in the Codification. The amendments in Part II do not require any transition guidance as the amendments do not have an accounting effect. The amendments in ASU 2017-11 will be effective on January 1, 2020, and the Part I amendments must be applied retrospectively. Early application is permitted. The Partnership early adopted ASU 2017-11, which did not have any material impact.

Discontinued Operations

Discontinued Operations	9 Months Ended
	Sep. 30, 2018
Discontinued Operations and Disposal Groups [Abstract]
Discontinued Operations	3. DISCONTINUED OPERATIONS Sands Hill Mining LLC Major components of net (loss) from discontinued operations for the three and nine months ended September 30, 2018 and 2017 are summarized as follows: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Major line items constituting (loss) from discontinued operations for the Sands Hill Mining disposal: Coal sales $ - $ 194 $ - $ 1,131 Limestone sales - 1,003 - 3,089 Other revenues - 462 - 1,294 Total revenues - 1,659 - 5,514 Cost of operations (exclusive of depreciation, depletion and amortization shown separately below) - 1,704 - 5,128 Depreciation, depletion and amortization - 127 - 458 Selling, general and administrative (exclusive of depreciation, depletion and amortization shown separately above) - 8 - 34 Freight and handling costs 281 - 683 (Gain) on sale/disposal of assets, net - - - (2 ) Total costs and expenses - 2,120 - 6,301 (Loss) from discontinued operations before income taxes for the Sands Hill Mining disposal - (461 ) - (787 ) Income taxes - - - - Net (loss) from discontinued operations $ - $ (461 ) $ - $ (787 ) Cash Flows The depreciation, depletion and amortization amounts for Sands Hill Mining LLC for each period presented are listed in the previous table. The Partnership did not fund any material capital expenditures for Sands Hill Mining LLC for any period presented. Sands Hill Mining LLC did not have any material non-cash operating items or non-cash investing items for any period presented.

Prepaid Expenses and Other Curr

Prepaid Expenses and Other Current Assets	9 Months Ended
	Sep. 30, 2018
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 September 30, 2018 and December 31, 2017 consisted of the following: September 30, 2018 December 31, 2017 (in thousands) Other prepaid expenses $ 1,340 $ 920 Prepaid insurance 1,890 1,445 Prepaid leases 127 92 Supply inventory 306 434 Total Prepaid expenses and other $ 3,663 $ 2,891

Property, Plant and Equipment

Property, Plant and Equipment	9 Months Ended
	Sep. 30, 2018
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 September 30, 2018 and December 31, 2017 are summarized by major classification as follows: Useful Lives September 30, 2018 December 31, 2017 (in thousands) Land $ 13,783 $ 14,687 Mining and other equipment and related facilities 2 - 20 Years 305,595 298,293 Mine development costs 1 - 15 Years 60,422 58,566 Coal properties 1 - 15 Years 64,070 64,070 Construction work in process 6,437 5,227 Total 450,307 440,843 Less accumulated depreciation, depletion and amortization (273,518 ) (263,520 ) Net $ 176,789 $ 177,323 Depreciation expense for mining and other equipment and related facilities, depletion expense for coal properties, amortization expense for mine development costs and amortization expense for asset retirement costs for the three and nine months ended September 30, 2018 and 2017 were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (in thousands) Depreciation expense-mining and other equipment and related facilities $ 4,276 $ 3,843 $ 12,607 $ 12,324 Depletion expense for coal properties and oil and natural gas properties 467 450 1,419 1,221 Amortization expense for mine development costs 777 721 2,348 2,265 Amortization expense for asset retirement costs 109 46 359 227 Total depreciation, depletion and amortization $ 5,629 $ 5,060 $ 16,733 $ 16,037 On May 17, 2018, the Partnership entered into a sale leaseback agreement with Wintrust Commercial Finance for certain equipment previously owned by the Partnership. The Partnership received approximately $3.7 million of proceeds, of which $1.7 million was used to reduce debt. The lease agreement has a thirty-six month term. The Partnership recorded a loss of $0.2 million on the sale of the equipment which is included on the (Gain)/Loss on sale/disposal of assets-net line in the Partnership’s unaudited condensed consolidated statements of operations and comprehensive income.

Other Non-Current Assets

Other Non-Current Assets	9 Months Ended
	Sep. 30, 2018
Other Assets, Noncurrent Disclosure [Abstract]
Other Non-Current Assets	6. OTHER NON-CURRENT ASSETS Other non-current assets as of September 30, 2018 and December 31, 2017 consisted of the following: September 30, 2018 December 31, 2017 (in thousands) Deposits and other $ 1,260 $ 423 Due (to)/from Rhino GP (30 ) (61 ) Non-current receivable 27,806 27,806 Deferred expenses 318 340 Total $ 29,354 $ 28,508 Non-current receivable Balance Sheet

Accrued Expenses and Other Curr

Accrued Expenses and Other Current Liabilities	9 Months Ended
	Sep. 30, 2018
Payables and Accruals [Abstract]
Accrued Expenses and Other Current Liabilities	7. ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES Accrued expenses and other current liabilities as of September 30, 2018 and December 31, 2017 consisted of the following: September 30, 2018 December 31, 2017 (in thousands) Payroll, bonus and vacation expense $ 1,988 $ 2,633 Non income taxes 2,878 2,738 Royalty expenses 1,713 2,410 Accrued interest 161 132 Health claims 746 871 Workers’ compensation & pneumoconiosis 1,750 1,750 Other 1,280 652 Total $ 10,516 $ 11,186

Debt

Debt	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Debt	8. DEBT Debt as of September 30, 2018 and December 31, 2017 consisted of the following: September 30, 2018 December 31, 2017 (in thousands) Note payable-Financing Agreement $ 34,778 $ 40,000 Note payable-other debt 1,095 - Net unamortized debt issuance costs (4,135 ) (4,688 ) Net unamortized original issue discount (948 ) (1,264 ) Total 30,790 34,048 Less current portion (7,595 ) (5,475 ) Long-term debt $ 23,195 $ 28,573 Financing Agreement On December 27, 2017, the Operating Company, a wholly-owned subsidiary of the Partnership, certain of the Operating Company’s subsidiaries identified as Borrowers (together with the Operating Company, the “Borrowers”), the Partnership and certain other Operating Company subsidiaries identified as Guarantors (together with the Partnership, the “Guarantors”), entered into a Financing Agreement (the “Financing Agreement”) with Cortland Capital Market Services LLC, as Collateral Agent and Administrative agent, CB Agent Services LLC, as Origination Agent and the parties identified as Lenders therein (the “Lenders”), pursuant to which the Lenders agreed to provide the Borrowers with a multi-draw term loan in the aggregate principal amount of $80 million, subject to the terms and conditions set forth in the Financing Agreement. The total principal amount is divided into a $40 million commitment, the conditions of which were satisfied at the execution of the Financing Agreement (the “Effective Date Term Loan Commitment”) and an additional $40 million commitment that is contingent upon the satisfaction of certain conditions precedent specified in the Financing Agreement (“Delayed Draw Term Loan Commitment”). Loans made pursuant to the Financing Agreement are secured by substantially all of the Borrowers’ and Guarantors’ assets. The Financing Agreement terminates on December 27, 2020. Loans made pursuant to the Financing Agreement are, at the Operating Company’s option, either “Reference Rate Loans” or “LIBOR Rate Loans.” Reference Rate Loans bear interest at the greatest of (a) 4.25% per annum, (b) the Federal Funds Rate plus 0.50% per annum, (c) the LIBOR Rate (calculated on a one-month basis) plus 1.00% per annum or (d) the Prime Rate (as published in the Wall Street Journal) or if no such rate is published, the interest rate published by the Federal Reserve Board as the “bank prime loan” rate or similar rate quoted therein, in each case, plus an applicable margin of 9.00% per annum (or 12.00% per annum if the Operating Company has elected to capitalize an interest payment pursuant to the PIK Option, as described below). LIBOR Rate Loans bear interest at the greater of (x) the LIBOR for such interest period divided by 100% minus the maximum percentage prescribed by the Federal Reserve for determining the reserve requirements in effect with respect to eurocurrency liabilities for any Lender, if any, and (y) 1.00%, in each case, plus 10.00% per annum (or 13.00% per annum if the Borrowers have elected to capitalize an interest payment pursuant to the PIK Option). Interest payments are due on a monthly basis for Reference Rate Loans and one-, two- or three-month periods, at the Operating Company’s option, for LIBOR Rate Loans. If there is no event of default occurring or continuing, the Operating Company may elect to defer payment on interest accruing at 6.00% per annum by capitalizing and adding such interest payment to the principal amount of the applicable term loan (the “PIK Option”). Commencing December 31, 2018, the principal for each loan made under the Financing Agreement will be payable on a quarterly basis in an amount equal to $375,000 per quarter, with all remaining unpaid principal and accrued and unpaid interest due on December 27, 2020. In addition, the Borrowers must make certain prepayments over the term of any loans outstanding, including: (i) the payment of 25% of Excess Cash Flow (as that term is defined in the Financing Agreement) of the Partnership and its subsidiaries for each fiscal year, commencing with respect to the year ending December 31, 2019, (ii) subject to certain exceptions, the payment of 100% of the net cash proceeds from the dispositions of certain assets, the incurrence of certain indebtedness or receipts of cash outside of the ordinary course of business, and (iii) the payment of the excess of the outstanding principal amount of term loans outstanding over the amount of the Collateral Coverage Amount (as that term is defined in the Financing Agreement). In addition, the Lenders are entitled to (i) certain fees, including 1.50% per annum of the unused Delayed Draw Term Loan Commitment for as long as such commitment exists, (ii) for the 12-month period following the execution of the Financing Agreement, a make-whole amount equal to the interest and unused Delayed Draw Term Loan Commitment fees that would have been payable but for the occurrence of certain events, including among others, bankruptcy proceedings or the termination of the Financing Agreement by the Operating Company, and (iii) audit and collateral monitoring fees and origination and exit fees. The Financing Agreement requires the Borrowers and Guarantor to comply with several affirmative covenants at any time loans are outstanding, including, among others: (i) the requirement to deliver monthly, quarterly and annual financial statements, (ii) the requirement to periodically deliver certificates indicating, among other things, (a) compliance with terms of the Financing Agreement and ancillary loan documents, (b) inventory, accounts payable, sales and production numbers, (c) the calculation of the Collateral Coverage Amount (as that term is defined in the Financing Agreement), (d) projections for the Partnership and its subsidiaries and (e) coal reserve amounts; (iii) the requirement to notify the Administrative Agent of certain events, including events of default under the Financing Agreement, dispositions, entry into material contracts, (iv) the requirement to maintain insurance, obtain permits, and comply with environmental and reclamation laws (v) the requirement to sell up to $5.0 million of shares in Mammoth Energy Services Inc. and use the net proceeds therefrom to prepay outstanding term loans, which was completed during the first half of 2018 and (vi) establish and maintain cash management services and establish a cash management account and deliver a control agreement with respect to such account to the Collateral Agent. The Financing Agreement also contains negative covenants that restrict the Borrowers and Guarantors ability to, among other things: (i) incur liens or additional indebtedness or make investments or restricted payments, (ii) liquidate or merge with another entity, or dispose of assets, (iii) change the nature of their respective businesses; (iv) make capital expenditures in excess, or, with respect to maintenance capital expenditures, lower than, specified amounts, (v) incur restrictions on the payment of dividends, (vi) prepay or modify the terms of other indebtedness, (vii) permit the Collateral Coverage Amount to be less than the outstanding principal amount of the loans outstanding under the Financing Agreement or (viii) permit the trailing six month Fixed Charge Coverage Ratio of the Partnership and its subsidiaries to be less than 1.20 to 1.00 commencing with the six-month period ending June 30, 2018. See Note 19 for information relating to the lenders’ waiver of the Fixed Charge Coverage Ratio for the six-month period ending September 30, 2018. The Financing Agreement contains customary events of default, following which the Collateral Agent may, at the request of lenders, terminate or reduce all commitments and accelerate the maturity of all outstanding loans to become due and payable immediately together with accrued and unpaid interest thereon and exercise any such other rights as specified under the Financing Agreement and ancillary loan documents. The Partnership entered into a warrant agreement with certain parties that are also parties to the Financing Agreement discussed above. (See Note 11 for further discussion) On April 17, 2018, Rhino amended its Financing Agreement to allow for certain activities including a sale leaseback of certain pieces of equipment, the extension of the due date for lease consents required under the Financing Agreement to June 30, 2018 and the distribution to holders of the Series A preferred units of $6.0 million (accrued in the consolidated financial statements at December 31, 2017). Additionally, the amendments provided that the Partnership could sell additional shares of Mammoth Energy Services Inc. stock and retain 50% of the proceeds with the other 50% used to reduce debt. The Partnership reduced its outstanding debt by $3.4 million with proceeds from the sale of Mammoth Energy Services Inc. stock in the second quarter of 2018. On July 27, 2018, the Partnership entered into a consent with its Lenders related to the Financing Agreement. The consent included the lenders agreement to make a $5 million loan from the Delayed Draw Term Loan Commitment, which was repaid in full on October 26, 2018 pursuant to the terms of the consent. The consent also included a waiver of the requirements relating to the use of proceeds of any sale of the shares of Mammoth Inc. set forth in the consent to the Financing Agreement, dated as of April 17, 2018 and also waived any Event of Default that arose or would otherwise arise under the Financing Agreement for failing to comply with the Fixed Charge Coverage Ratio for the six months ended June 30, 2018. On November 8, 2018, the Partnership entered into a consent with its Lenders related to the Financing Agreement. The consent includes the lenders agreement to waive any Event of Default that arose or would otherwise arise under the Financing Agreement for failing to comply with the Fixed Charge Coverage Ratio for the six months ended September 30, 2018. At September 30, 2018, the Partnership had $29.8 million of borrowings outstanding at a variable interest rate of Libor plus 10.00% (12.25%) and $5.0 million of borrowings outstanding at a fixed interest rate of 12.34%. Letter of Credit Facility-PNC Bank On December 27, 2017, the Partnership entered into a master letter of credit facility, security agreement and reimbursement agreement (the “LoC Facility Agreement”) with PNC Bank, National Association (“PNC”), pursuant to which PNC agreed to provide the Partnership with a facility for the issuance of standby letters of credit used in the ordinary course of its business (the “LoC Facility”). The LoC Facility Agreement provided that the Partnership pay a quarterly fee at a rate equal to 5% per annum calculated based on the daily average of letters of credit outstanding under the LoC Facility, as well as administrative costs incurred by PNC and a $100,000 closing fee. The LoC Facility Agreement provided that the Partnership reimburse PNC for any drawing under a letter of credit by a specified beneficiary as soon as possible after payment was made. The Partnership’s obligations under the LoC Facility Agreement were secured by a first lien security interest on a cash collateral account that was required to contain no less than 105% of the face value of the outstanding letters of credit. In the event the amount in such cash collateral account was insufficient to satisfy the Partnership’s reimbursement obligations, the amount outstanding would bear interest at a rate per annum equal to the Base Rate (as that term was defined in the LoC Facility Agreement) plus 2.0%. The Partnership was to indemnify PNC for any losses which PNC may have incurred as a result of the issuance of a letter of credit or PNC’s failure to honor any drawing under a letter of credit, subject in each case to certain exceptions. The Partnership provided cash collateral to its counterparties during the third quarter of 2018 and as of September 30, 2018, the LoC Facility was terminated. The Partnership had no outstanding letters of credit at September 30, 2018.

Asset Retirement Obligations

Asset Retirement Obligations	9 Months Ended
	Sep. 30, 2018
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligations	9. ASSET RETIREMENT OBLIGATIONS The changes in asset retirement obligations for the nine months ended September 30, 2018 and the year ended December 31, 2017 are as follows: Nine months ended Year ended September 30, 2018 December 31, 2017 (in thousands) Balance at beginning of period (including current portion) $ 18,662 $ 19,108 Accretion expense 954 1,493 Adjustment resulting from disposal of property - (223 ) Adjustments to the liability from annual recosting and other - (1,656 ) Liabilities settled (259 ) (60 ) Balance at end of period 19,357 18,662 Less current portion of asset retirement obligation (498 ) (498 ) Long-term portion of asset retirement obligation $ 18,859 $ 18,164

Employee Benefits

Employee Benefits	9 Months Ended
	Sep. 30, 2018
Retirement Benefits [Abstract]
Employee Benefits	10. EMPLOYEE BENEFITS 401(k) Plans The Operating Company sponsors a defined contribution savings plans for all employees. Under the defined contribution savings plan, the Operating Company matches voluntary contributions of participants up to a maximum contribution based upon a percentage of a participant’s salary with an additional matching contribution possible at the Partnership’s discretion. The expense under these plans for the three and nine months ended September 30, 2018 and 2017 is included in Cost of operations and Selling, general and administrative expense in the Partnership’s unaudited condensed consolidated statements of operations and comprehensive income and was as follows: Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 (in thousands) 401(k) plan expense $ 459 $ 376 $ 1,288 $ 1,070

Partners' Capital

Partners' Capital	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Partners' Capital	11. PARTNERS’ CAPITAL Common Unit Warrants In December 2017, the Partnership entered into a warrant agreement with certain parties that are also parties to the Financing Agreement discussed above. The warrant agreement included the issuance of a total of 683,888 warrants for common units (“Common Unit Warrants”) of the Partnership at an exercise price of $1.95 per unit, which was the closing price of the Partnership’s common units on the OTC market as of December 27, 2017. The Common Unit Warrants have a five year expiration date. The Common Unit Warrants and the Partnership’s common units after exercise are both transferable, subject to applicable US securities laws. The Common Unit Warrant exercise price is $1.95 per unit, but the price per unit will be reduced by future common unit distributions and other further adjustments in price included in the warrant agreement for transactions that are dilutive to the amount of the Partnership’s common units outstanding. The warrant agreement includes a provision for a cashless exercise where the warrant holders can receive a net number of common units. Per the warrant agreement, the warrants are detached from the Financing Agreement and fully transferable. The Partnership analyzed the Common Unit Warrants in accordance with the applicable accounting literature and concluded the Common Unit Warrants should be classified as equity. The Partnership allocated the $40.0 million proceeds from the Financing Agreement between the Common Unit Warrants and the Financing Agreement based upon their relative fair values. The allocation based upon relative fair values resulted in approximately $1.3 million being recorded for the Common Unit Warrants in the Partner’s Capital equity section and a corresponding reduction in Long-term debt, net on the Partnership’s consolidated statements of financial position. Series A Preferred Units On December 30, 2016, the general partner entered into the Fourth Amended and Restated Agreement of Limited Partnership of the Partnership (“Amended and Restated Partnership Agreement”) to create, authorize and issue the Series A preferred units. The Series A preferred units rank senior to all classes or series of equity securities of the Partnership with respect to distribution rights and rights upon liquidation. The holders of the Series A preferred units are entitled to receive annual distributions equal to the greater of (i) 50% of the CAM Mining free cash flow (as defined below) and (ii) an amount equal to the number of outstanding Series A preferred units multiplied by $0.80. “CAM Mining free cash flow” is defined in the Amended and Restated Partnership Agreement as (i) the total revenue of the Partnership’s Central Appalachia business segment, minus (ii) the cost of operations (exclusive of depreciation, depletion and amortization) for the Partnership’s Central Appalachia business segment, minus (iii) an amount equal to $6.50, multiplied by the aggregate number of coal tons sold by the Partnership from its Central Appalachia business segment. If the Partnership fails to pay any or all of the distributions in respect of the Series A preferred units, such deficiency will accrue until paid in full and the Partnership will not be permitted to pay any distributions on its Partnership interests that rank junior to the Series A preferred units, including its common units. The Series A preferred units will be liquidated in accordance with their capital accounts and upon liquidation will be entitled to distributions of property and cash in accordance with the balances of their capital accounts prior to such distributions on equity securities that rank junior to the Series A preferred units. The Series A preferred units vote on an as-converted basis with the common units, and the Partnership is restricted from taking certain actions without the consent of the holders of a majority of the Series A preferred units, including: (i) the issuance of additional Series A preferred units, or securities that rank senior or equal to the Series A preferred units; (ii) the sale or transfer of CAM Mining or a material portion of its assets; (iii) the repurchase of common units, or the issuance of rights or warrants to holders of common units entitling them to purchase common units at less than fair market value; (iv) consummation of a spin off; (v) the incurrence, assumption or guaranty of indebtedness for borrowed money in excess of $50.0 million except indebtedness relating to entities or assets that are acquired by the Partnership or its affiliates that is in existence at the time of such acquisition or (vi) the modification of CAM Mining’s accounting principles or the financial or operational reporting principles of the Partnership’s Central Appalachia business segment, subject to certain exceptions. The Partnership has the option to convert the outstanding Series A preferred units at any time on or after the time at which the amount of aggregate distributions paid in respect of each Series A preferred unit exceeds $10.00 per unit. Each Series A preferred unit will convert into a number of common units equal to the quotient (the “Series A Conversion Ratio”) of (i) the sum of $10.00 and any unpaid distributions in respect of such Series A Preferred Unit divided by (ii) 75% of the volume-weighted average closing price of the common units for the preceding 90 trading days (the “VWAP”); provided however, that the VWAP will be capped at a minimum of $2.00 and a maximum of $10.00. On December 31, 2021, all outstanding Series A preferred units will convert into common units at the then applicable Series A Conversion Ratio. During the first quarter of 2018, the Partnership paid $6.0 million in distributions earned for the year ended December 31, 2017 to holders of the Series A preferred units. The Partnership has accrued $1.8 million for distributions to holders of the Series A preferred units for the nine months ended September 30, 2018. Investment in Royal Common Stock On September 1, 2017, Royal elected to convert certain obligations to the Partnership totaling $4.1 million to shares of Royal common stock. Royal issued 914,797 shares of its common stock to the Partnership at a conversion price of $4.51 per share. The price per share was equal to the outstanding balance multiplied by seventy-five percent (75%) of the volume-weighted average closing price of Royal’s common stock for the 90 days preceding the date of conversion (“Royal VWAP”), subject to a minimum Royal VWAP of $3.50 and a maximum Royal VWAP of $7.50. The Partnership recorded the $4.1 million conversion as Investment in Royal common stock in the Partners’ Capital section of the Partnership’s unaudited condensed consolidated statements of financial position since Royal does not have significant economic activity apart from its investment in the Partnership. Other Comprehensive Income On April 12, 2018 the Partnership sold 232,347 shares of Mammoth Energy Services, Inc. (NASDAQ: TUSK) (“Mammoth Inc.”) for net cash consideration of $7.1 million. The Partnership used $3.4 million of the proceeds to reduce its debt balance. The Partnership recorded a gain on the sale of approximately $3.6 million and reduced Other Comprehensive income by $4.0 million as a result of the disposition. On January 19, 2018 the Partnership sold 232,347 shares of Mammoth Inc. for net cash consideration of $4.8 million. The proceeds were used to reduce the Partnership’s debt balance. The Partnership recorded a gain on the sale of $2.9 million and reduced Other Comprehensive income by $2.6 million as a result of the disposition. As of September 30, 2018 and December 31, 2017, the Partnership recorded fair market value adjustments of $3.9 million and $2.6 million, respectively, for its available-for-sale investment in Mammoth Inc. based on the market value of the shares at September 30, 2018 and December 31, 2017, respectively, which was recorded in Other Comprehensive Income. As of September 30, 2018 and December 31, 2017, the Partnership recorded its investment in Mammoth Inc. as a current asset, which was classified as available-for-sale. The Partnership has included its investment in Mammoth Inc. in its Other category for segment reporting purposes. As of September 30, 2018, the Partnership owned 104,100 shares of Mammoth Inc. Accumulated Distribution Arrearages Pursuant to the Partnership’s partnership agreement, the Partnership’s common units accrue arrearages every quarter when the distribution level is below the minimum level of $4.45 per unit. Beginning with the quarter ended June 30, 2015 and continuing through the quarter ended September 30, 2018, the Partnership has suspended the cash distribution on its common units. For each of the quarters ended September 30, 2014, December 31, 2014 and March 31, 2015, the Partnership announced cash distributions per common unit at levels lower than the minimum quarterly distribution. The Partnership has not paid any distribution on its subordinated units for any quarter after the quarter ended March 31, 2012. As of September 30, 2018, the Partnership had accumulated arrearages of $614.5 million.

Earnings Per Unit ('EPU')

Earnings Per Unit ('EPU')	9 Months Ended
	Sep. 30, 2018
Earnings Per Unit [Abstract]
Earnings Per Unit ("EPU")	12. EARNINGS PER UNIT (“EPU”) The following table presents a reconciliation of the numerators and denominators of the basic and diluted EPU calculations for the periods ended September 30, 2018 and 2017: Three months ended September 30, 2018 General Partner Common Unitholders Subordinated Unitholders Preferred Unitholders (in thousands, except per unit data) Numerator: Interest in net (loss)/income: Net (loss)/income from continuing operations $ (24 ) $ (5,228 ) $ (457 ) $ 1,179 Net(loss)/income from discontinued operations - - - - Total interest in net (loss)/income $ (24 ) $ (5,228 ) $ (457 ) $ 1,179 Denominator: Weighted average units used to compute basic EPU n/a 13,098 1,146 1,500 Weighted average units used to compute diluted EPU n/a 13,098 1,146 1,500 Net (loss)/income per limited partner unit, basic Net (loss)/income per unit from continuing operations n/a $ (0.40 ) $ (0.40 ) $ 0.79 Net(loss/income) per unit from discontinued operations n/a - - - Net (loss)/income per common unit, basic n/a $ (0.40 ) $ (0.40 ) $ 0.79 Net (loss)/income per limited partner unit, diluted Net (loss)/income per unit from continuing operations n/a $ (0.40 ) $ (0.40 ) 0.79 Net (loss)/income per unit from discontinued operations n/a - - - Net (loss)/income per common unit, diluted n/a $ (0.40 ) $ (0.40 ) 0.79 Three months ended September 30, 2017 General Partner Common Unitholders Subordinated Unitholders Preferred Unitholders (in thousands, except per unit data) Numerator: Interest in net (loss)/income: Net income from continuing operations $ 2 $ 445 $ 42 $ 1,644 Net (loss) from discontinued operations (1 ) (420 ) (40 ) - Total interest in net income $ 1 $ 25 $ 2 1,644 Denominator: Weighted average units used to compute basic EPU n/a 12,994 1,236 1,500 Weighted average units used to compute diluted EPU n/a 12,994 1,236 1,500 Net (loss)/income per limited partner unit, basic Net (loss)/income per unit from continuing operations n/a $ 0.03 $ 0.03 $ 1.10 Net (loss) per unit from discontinued operations n/a (0.03 ) (0.03 ) - Net (loss)/income per common unit, basic n/a $ - $ - $ 1.10 Net (loss)/income per limited partner unit, diluted Net (loss)/income per unit from continuing operations n/a $ 0.03 $ 0.03 $ 1.10 Net (loss) per unit from discontinued operations n/a (0.03 ) (0.03 ) - Net (loss)/income per common unit, diluted n/a $ - $ - $ 1.10 Nine months ended September 30, 2018 General Partner Common Unitholders Subordinated Unitholders Preferred Unitholders (in thousands, except per unit data) Numerator: Interest in net (loss)/income: Net (loss)/income from continuing operations $ (51 ) $ (11,144 ) $ (979 ) $ 1,788 Net (loss)/income from discontinued operations - - - - Total interest in net (loss)/income $ (51 ) $ (11,144 ) $ (979 ) $ 1,788 Denominator: Weighted average units used to compute basic EPU n/a 13,035 1,146 1,500 Weighted average units used to compute diluted EPU n/a 13,035 1,146 1,500 Net (loss)/income per limited partner unit, basic Net (loss)/income per unit from continuing operations n/a $ (0.86 ) $ (0.86 ) $ 1.19 Net (loss)/income per unit from discontinued operations n/a - - - Net (loss)/income per common unit, basic n/a $ (0.86 ) $ (0.86 ) $ 1.19 Net (loss)/income per limited partner unit, diluted Net (loss)/income per unit from continuing operations n/a $ (0.86 ) $ (0.86 ) 1.19 Net (loss)/income per unit from discontinued operations n/a - - - Net (loss)/income per common unit, diluted n/a $ (0.86 ) $ (0.86 ) 1.19 Nine months ended September 30, 2017 General Partner Common Unitholders Subordinated Unitholders Preferred Unitholders (in thousands, except per unit data) Numerator: Interest in net (loss/income): Net (loss)/income from continuing operations $ (15 ) $ (3,088 ) $ (295 ) 4,118 Net (loss) from discontinued operations (3 ) (715 ) (69 ) - Total interest in net (loss)/income $ (18 ) $ (3,803 ) $ (364 ) 4,118 Denominator: Weighted average units used to compute basic EPU n/a 12,942 1,236 1,500 Weighted average units used to compute diluted EPU n/a 12,942 1,236 1,500 Net (loss)/income per limited partner unit, basic Net (loss)/income per unit from continuing operations n/a $ (0.24 ) $ (0.24 ) $ 2.75 Net (loss) per unit from discontinued operations n/a (0.05 ) (0.05 ) - Net (loss)/income per common unit, basic n/a $ (0.29 ) $ (0.29 ) $ 2.75 Net (loss)/income per limited partner unit, diluted Net (loss)/income per unit from continuing operations n/a $ (0.24 ) $ (0.24 ) $ 2.75 Net (loss) per unit from discontinued operations n/a (0.05 ) (0.05 ) - Net (loss)/income per common unit, diluted n/a $ (0.29 ) $ (0.29 ) $ 2.75 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 a total net loss for three and nine months ended September 30, 2018 and the nine months ended September 30, 2017, 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. The Partnership earned total net income for the three months ended September 30, 2017 but did not have any potential dilutive units outstanding during the period. There were 683,888 potential dilutive common units related to the Common Unit Warrants as discussed in Note 11 for the nine months ended September 30, 2018.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	13. COMMITMENTS AND CONTINGENCIES Coal Sales Contracts and Contingencies Year Tons (in thousands) Number of customers 2018 Q4 1,283 14 2019 2,107 10 2020 1,446 6 Some of the contracts have sales price adjustment provisions, subject to certain limitations and adjustments, based on a variety of factors and indices. Purchased Coal Expenses Leases Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 (in thousands) Lease expense $ 1,242 $ 725 $ 2,648 $ 3,198 Royalty expense $ 3,320 $ 3,602 $ 10,431 $ 10,888

Major Customers

Major Customers	9 Months Ended
	Sep. 30, 2018
Risks and Uncertainties [Abstract]
Major Customers	14. MAJOR CUSTOMERS The Partnership had sales or receivables from the following major customers that in each period equaled or exceeded 10% of revenues: September 30, December 31, Nine months Nine months 2018 2017 ended ended Receivable Receivable September 30, September 30, Balance Balance 2018 Sales 2017 Sales (in thousands) Javelin Global $ 4,628 $ 2,470 $ 29,267 $ - Dominion Energy 593 1,232 17,166 17,148 Integrity Coal - 2,238 15,534 18,152 Big Rivers Electric Corporation 642 - 15,586 18,387 LG&E 700 1,483 10,309 30,971

Revenue

Revenue	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Revenue	15. REVENUE The Partnership adopted ASC Topic 606 on January 1, 2018, using the modified retrospective method. The adoption of Topic 606 has no impact on revenue amounts recorded on the Partnership’s financial statements. The new disclosures required by ASC Topic 606, as applicable, are presented below. The majority of the Partnership’s revenues are generated under coal sales contracts. Coal sales accounted for approximately 99.0% of the Partnership’s total revenues for the three and nine months ended September 30, 2018 and 2017. Other revenues generally consist of coal royalty revenues, coal handling and processing revenues, rebates and rental income, which accounted for approximately 1.0% of the Partnership’s total revenues for the three and nine months ended September 30, 2018 and 2017. The majority of the Partnership’s coal sales contracts have a single performance obligation (shipment or delivery of coal according to terms of the sales agreement) and as such, the Partnership is not required to allocate the contract’s transaction price to multiple performance obligations. All of the Partnership’s coal sales revenue is recognized when shipment or delivery to the customer has occurred, prices are fixed or determinable and the title or risk of loss has passed in accordance with the terms of the coal sales agreement. With respect to other revenues recognized in situations unrelated to the shipment of coal, the Partnership carefully reviews the facts and circumstances of each transaction and does not recognize revenue until the following criteria are met: persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the seller’s price to the buyer is fixed or determinable and collectability is reasonably assured. In the tables below, the Partnership has disaggregated its revenue by category for each reportable segment as required by ASC Topic 606. The following table disaggregates revenue by type for each reportable segment for the three months ended September 30, 2018: Central Appalachia Northern Appalachia Rhino Western Illinois Basin Other Total Consolidated (in thousands) Coal sales Steam coal $ 13,979 $ 5,229 $ 10,254 $ 12,529 $ - $ 41,991 Met coal 29,875 - - - - 29,875 Other revenue 36 602 - - 61 699 Total $ 43,890 $ 5,831 $ 10,254 $ 12,529 $ 61 $ 72,565 The following table disaggregates revenue by type for each reportable segment for the three months ended September 30, 2017: Central Appalachia Northern Appalachia Rhino Western Illinois Basin Other Total Consolidated (in thousands) Coal sales Steam coal $ 9,580 $ 4,361 $ 9,080 $ 14,960 $ - $ 37,981 Met coal 18,285 - - - - 18,285 Other revenue 27 377 - 5 11 420 Total $ 27,892 $ 4,738 $ 9,080 $ 14,965 $ 11 $ 56,686 The following table disaggregates revenue by type for each reportable segment for the nine months ended September 30, 2018: Central Appalachia Northern Appalachia Rhino Western Illinois Basin Other Total Consolidated (in thousands) Coal sales Steam coal $ 38,840 $ 12,821 $ 26,970 $ 37,748 $ - $ 116,379 Met coal 64,004 - - - - 64,004 Other revenue 154 1,576 10 - 166 1,906 Total $ 102,998 $ 14,397 $ 26,980 $ 37,748 $ 166 $ 182,289 The following table disaggregates revenue by type for each reportable segment for the nine months ended September 30, 2017: Central Appalachia Northern Appalachia Rhino Western Illinois Basin Other Total Consolidated (in thousands) Coal sales Steam coal $ 26,634 $ 10,544 $ 25,138 $ 49,373 $ - $ 111,689 Met coal 50,131 - - - - 50,131 Other revenue 114 955 3 5 21 1,098 Total $ 76,879 $ 11,499 $ 25,141 $ 49,378 $ 21 $ 162,918

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements	16. FAIR VALUE MEASUREMENTS The Partnership determines the fair value of assets and liabilities based on the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants. The fair values are based on assumptions that market participants would use when pricing an asset or liability, including assumptions about risk and the risks inherent in valuation techniques and the inputs to valuations. The fair value hierarchy is based on whether the inputs to valuation techniques are observable or unobservable. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect the Partnership’s assumptions of what market participants would use. The fair value hierarchy includes three levels of inputs that may be used to measure fair value as described below: Level One - Quoted prices for identical instruments in active markets. Level Two - The fair value of the assets and liabilities included in Level 2 are based on standard industry income approach models that use significant observable inputs. Level Three - Unobservable inputs significant to the fair value measurement supported by little or no market activity. In those cases when the inputs used to measure fair value meet the definition of more than one level of the fair value hierarchy, the lowest level input that is significant to the fair value measurement in its totality determines the applicable level in the fair value hierarchy. 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 Financing Agreement was determined based upon a market approach and approximates the carrying value at September 30, 2018. The fair value of the Partnership’s Financing Agreement is a Level 2 measurement. As of September 30, 2018 and December 31, 2017, the Partnership had a recurring fair value measurement relating to its investment in Mammoth Inc. As discussed in Note 11, the Partnership owned 104,100 shares of Mammoth Inc. as of September 30, 2018. The Partnership’s shares of Mammoth Inc. are classified as an available-for-sale investment on the Partnership’s unaudited condensed consolidated statements of financial position. Based on the availability of a quoted price, the recurring fair value measurement of the Mammoth Inc. shares is a Level 1 measurement.

Supplemental Disclosures of Cas

Supplemental Disclosures of Cash Flow Information	9 Months Ended
	Sep. 30, 2018
Supplemental Cash Flow Information [Abstract]
Supplemental Disclosures of Cash Flow Information	17. SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION Cash payments for interest were $4.9 million and $2.1 million for the nine months ended September 30, 2018 and 2017, respectively. The unaudited condensed consolidated statement of cash flows for the nine months ended September 30, 2018 and 2017 excludes approximately $1.1 million and $1.3 million, respectively, of property, plant and equipment additions which are recorded in Accounts payable.

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Segment Information	18. SEGMENT INFORMATION The Partnership primarily 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. As of September 30, 2018, the Partnership has four reportable business segments: Central Appalachia, Northern Appalachia, Rhino Western and Illinois Basin. Additionally, the Partnership has an Other category that includes its ancillary businesses. Held for sale assets are included in the applicable segment for reporting purposes. 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 September 30, 2018 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 $ 43,890 $ 5,831 $ 10,255 $ 12,529 $ 60 $ 72,565 DD&A 2,200 385 978 1,974 92 5,629 Interest expense - - - - 2,831 2,831 Net income (loss) from continuing operations $ 3,619 $ (881 ) $ 56 $ (3,232 ) $ (4,092 ) $ (4,530 ) Reportable segment results of operations for the three months ended September 30, 2017 are as follows: Central Northern Rhino Illinois Total Appalachia Appalachia Western Basin Other Consolidated (in thousands) Total revenues $ 27,891 $ 4,738 $ 9,080 $ 14,965 $ 12 $ 56,686 DD&A 1,890 251 1,080 1,755 84 5,060 Interest expense - - - - 1,011 1,011 Net income (loss) from continuing operations $ 3,785 $ (449 ) $ 1,416 $ 107 $ (2,726 ) $ 2,133 Reportable segment results of operations for the nine months ended September 30, 2018 are as follows: Central Northern Rhino Illinois Total Appalachia Appalachia Western Basin Other Consolidated (in thousands) Total revenues $ 102,998 $ 14,397 $ 26,980 $ 37,748 $ 166 $ 182,289 DD&A 6,659 825 3,080 5,892 277 16,733 Interest expense 1 - - - 6,628 6,629 Net income (loss) from continuing operations $ 5,546 $ (3,473 ) $ 956 $ (7,441 ) $ (5,974 ) $ (10,386 ) Reportable segment results of operations for the nine months ended September 30, 2017 are as follows: Central Northern Rhino Illinois Total Appalachia Appalachia Western Basin Other Consolidated (in thousands) Total revenues $ 76,880 $ 11,500 $ 25,141 $ 49,377 $ 20 $ 162,918 DD&A 5,812 836 3,396 5,708 285 16,037 Interest expense - - - - 3,131 3,131 Net income (loss) from continuing operations $ 9,416 $ (2,480 ) $ 1,570 $ 1,736 $ (9,522 ) $ 720

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	19. SUBSEQUENT EVENTS On November 8, 2018, the Partnership entered into a consent with its Lenders related to the Financing Agreement. The consent includes the lenders agreement to waive any Event of Default that arose or would otherwise arise under the Financing Agreement for failing to comply with the Fixed Charge Coverage Ratio for the six months ended September 30, 2018.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies and General (Policies)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Revenue Recognition	Revenue Recognition. Freight and handling costs paid directly to third-party carriers and invoiced separately to coal customers are recorded as freight and handling costs and freight and handling revenues, respectively. Freight and handling costs billed to customers as part of the contractual per ton revenue of customer contracts is included in coal sales revenue. Other revenues generally consist of coal royalty revenues, coal handling and processing revenues, rebates and rental income. With respect to other revenues recognized in situations unrelated to the shipment of coal, the Partnership carefully reviews the facts and circumstances of each transaction and does not recognize revenue until the following criteria are met: persuasive evidence of an arrangement exists, delivery has occurred or services have been rendered, the seller’s price to the buyer is fixed or determinable and collectability is reasonably assured.
Investments in Unconsolidated Affiliates	Investments in Unconsolidated Affiliates.
Recently Issued Accounting Standards	Recently Issued Accounting Standards. Leases (Topic 842) In January 2017, the FASB issued ASU 2017-01, “Business Combinations (Topic 805).” ASU 2017-01 clarifies the definition of a business with the objective of adding guidance to assist entities with evaluating whether transactions should be accounted for as acquisitions (or disposals) of assets or businesses. ASU 2017-01 is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Partnership has adopted this standard on its unaudited condensed consolidated financial statements, which has no current period impact but may impact future periods in which acquisitions are completed. In July 2017, the FASB issued ASU 2017-11, “Earnings Per Share (Topic 260): Distinguishing Liabilities from Equity (Topic 480), I. Derivatives and Hedging (Topic 815): Accounting for Certain Financial Instruments with Down Round Features and II. Replacement of the Indefinite Deferral for Mandatorily Redeemable Financial Instruments of Certain Nonpublic Entities and Certain Mandatorily Redeemable Noncontrolling Interests with a Scope Exception.” Part I of ASU 2017-11 will result in freestanding equity-linked financial instruments, such as warrants, and conversion options in convertible debt or preferred stock to no longer be accounted for as a derivative liability at fair value as a result of the existence of a down round feature. For freestanding equity-classified financial instruments, the amendments require entities that present earnings per share (EPS) in accordance with Topic 260 to recognize the effect of the down round feature when it is triggered. That effect is treated as a dividend and as a reduction of income available to common shareholders in basic EPS. The amendments in Part II recharacterize the indefinite deferral of certain provisions of Topic 480 that now are presented as pending content in the Codification. The amendments in Part II do not require any transition guidance as the amendments do not have an accounting effect. The amendments in ASU 2017-11 will be effective on January 1, 2020, and the Part I amendments must be applied retrospectively. Early application is permitted. The Partnership early adopted ASU 2017-11, which did not have any material impact.

Discontinued Operations (Tables

Discontinued Operations (Tables)	9 Months Ended
	Sep. 30, 2018
Discontinued Operations and Disposal Groups [Abstract]
Schedule of Major Components of Net (Loss) from Discontinued Operations	Sands Hill Mining LLC Major components of net (loss) from discontinued operations for the three and nine months ended September 30, 2018 and 2017 are summarized as follows: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 Major line items constituting (loss) from discontinued operations for the Sands Hill Mining disposal: Coal sales $ - $ 194 $ - $ 1,131 Limestone sales - 1,003 - 3,089 Other revenues - 462 - 1,294 Total revenues - 1,659 - 5,514 Cost of operations (exclusive of depreciation, depletion and amortization shown separately below) - 1,704 - 5,128 Depreciation, depletion and amortization - 127 - 458 Selling, general and administrative (exclusive of depreciation, depletion and amortization shown separately above) - 8 - 34 Freight and handling costs 281 - 683 (Gain) on sale/disposal of assets, net - - - (2 ) Total costs and expenses - 2,120 - 6,301 (Loss) from discontinued operations before income taxes for the Sands Hill Mining disposal - (461 ) - (787 ) Income taxes - - - - Net (loss) from discontinued operations $ - $ (461 ) $ - $ (787 )

Prepaid Expenses and Other Cu_2

Prepaid Expenses and Other Current Assets (Tables)	9 Months Ended
	Sep. 30, 2018
Prepaid Expense and Other Assets, Current [Abstract]
Schedule of Prepaid Expenses and Other Current Assets	Prepaid expenses and other current assets as of September 30, 2018 and December 31, 2017 consisted of the following: September 30, 2018 December 31, 2017 (in thousands) Other prepaid expenses $ 1,340 $ 920 Prepaid insurance 1,890 1,445 Prepaid leases 127 92 Supply inventory 306 434 Total Prepaid expenses and other $ 3,663 $ 2,891

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	9 Months Ended
	Sep. 30, 2018
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant and Equipment by Major Classification	Property, plant and equipment, including coal properties and mine development and construction costs, as of September 30, 2018 and December 31, 2017 are summarized by major classification as follows: Useful Lives September 30, 2018 December 31, 2017 (in thousands) Land $ 13,783 $ 14,687 Mining and other equipment and related facilities 2 - 20 Years 305,595 298,293 Mine development costs 1 - 15 Years 60,422 58,566 Coal properties 1 - 15 Years 64,070 64,070 Construction work in process 6,437 5,227 Total 450,307 440,843 Less accumulated depreciation, depletion and amortization (273,518 ) (263,520 ) Net $ 176,789 $ 177,323
Schedule of Depreciation, Depletion and Amortization	Depreciation expense for mining and other equipment and related facilities, depletion expense for coal properties, amortization expense for mine development costs and amortization expense for asset retirement costs for the three and nine months ended September 30, 2018 and 2017 were as follows: Three Months Ended September 30, Nine Months Ended September 30, 2018 2017 2018 2017 (in thousands) Depreciation expense-mining and other equipment and related facilities $ 4,276 $ 3,843 $ 12,607 $ 12,324 Depletion expense for coal properties and oil and natural gas properties 467 450 1,419 1,221 Amortization expense for mine development costs 777 721 2,348 2,265 Amortization expense for asset retirement costs 109 46 359 227 Total depreciation, depletion and amortization $ 5,629 $ 5,060 $ 16,733 $ 16,037

Other Non-Current Assets (Table

Other Non-Current Assets (Tables)	9 Months Ended
	Sep. 30, 2018
Other Assets, Noncurrent Disclosure [Abstract]
Schedule of Other Non-Current Assets	Other non-current assets as of September 30, 2018 and December 31, 2017 consisted of the following: September 30, 2018 December 31, 2017 (in thousands) Deposits and other $ 1,260 $ 423 Due (to)/from Rhino GP (30 ) (61 ) Non-current receivable 27,806 27,806 Deferred expenses 318 340 Total $ 29,354 $ 28,508

Accrued Expenses and Other Cu_2

Accrued Expenses and Other Current Liabilities (Tables)	9 Months Ended
	Sep. 30, 2018
Payables and Accruals [Abstract]
Schedule of Accrued Expenses and Other Current Liabilities	Accrued expenses and other current liabilities as of September 30, 2018 and December 31, 2017 consisted of the following: September 30, 2018 December 31, 2017 (in thousands) Payroll, bonus and vacation expense $ 1,988 $ 2,633 Non income taxes 2,878 2,738 Royalty expenses 1,713 2,410 Accrued interest 161 132 Health claims 746 871 Workers’ compensation & pneumoconiosis 1,750 1,750 Other 1,280 652 Total $ 10,516 $ 11,186

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Schedule of Debt	Debt as of September 30, 2018 and December 31, 2017 consisted of the following: September 30, 2018 December 31, 2017 (in thousands) Note payable-Financing Agreement $ 34,778 $ 40,000 Note payable-other debt 1,095 - Net unamortized debt issuance costs (4,135 ) (4,688 ) Net unamortized original issue discount (948 ) (1,264 ) Total 30,790 34,048 Less current portion (7,595 ) (5,475 ) Long-term debt $ 23,195 $ 28,573

Asset Retirement Obligations (T

Asset Retirement Obligations (Tables)	9 Months Ended
	Sep. 30, 2018
Asset Retirement Obligation Disclosure [Abstract]
Schedule of Asset Retirement Obligations	The changes in asset retirement obligations for the nine months ended September 30, 2018 and the year ended December 31, 2017 are as follows: Nine months ended Year ended September 30, 2018 December 31, 2017 (in thousands) Balance at beginning of period (including current portion) $ 18,662 $ 19,108 Accretion expense 954 1,493 Adjustment resulting from disposal of property - (223 ) Adjustments to the liability from annual recosting and other - (1,656 ) Liabilities settled (259 ) (60 ) Balance at end of period 19,357 18,662 Less current portion of asset retirement obligation (498 ) (498 ) Long-term portion of asset retirement obligation $ 18,859 $ 18,164

Employee Benefits (Tables)

Employee Benefits (Tables)	9 Months Ended
	Sep. 30, 2018
Retirement Benefits [Abstract]
Schedule of Expense Under Defined Contribution Savings Plan	The expense under these plans for the three and nine months ended September 30, 2018 and 2017 is included in Cost of operations and Selling, general and administrative expense in the Partnership’s unaudited condensed consolidated statements of operations and comprehensive income and was as follows: Three months ended September 30, Nine months ended September 30, 2018 2017 2018 2017 (in thousands) 401(k) plan expense $ 459 $ 376 $ 1,288 $ 1,070

Earnings Per Unit ('EPU') (Tabl

Earnings Per Unit ('EPU') (Tables)	9 Months Ended
	Sep. 30, 2018
Earnings Per Unit [Abstract]
Schedule of Calculation of Numerator and Denominator in Earnings Per Unit	The following table presents a reconciliation of the numerators and denominators of the basic and diluted EPU calculations for the periods ended September 30, 2018 and 2017: Three months ended September 30, 2018 General Partner Common Unitholders Subordinated Unitholders Preferred Unitholders (in thousands, except per unit data) Numerator: Interest in net (loss)/income: Net (loss)/income from continuing operations $ (24 ) $ (5,228 ) $ (457 ) $ 1,179 Net(loss)/income from discontinued operations - - - - Total interest in net (loss)/income $ (24 ) $ (5,228 ) $ (457 ) $ 1,179 Denominator: Weighted average units used to compute basic EPU n/a 13,098 1,146 1,500 Weighted average units used to compute diluted EPU n/a 13,098 1,146 1,500 Net (loss)/income per limited partner unit, basic Net (loss)/income per unit from continuing operations n/a $ (0.40 ) $ (0.40 ) $ 0.79 Net(loss/income) per unit from discontinued operations n/a - - - Net (loss)/income per common unit, basic n/a $ (0.40 ) $ (0.40 ) $ 0.79 Net (loss)/income per limited partner unit, diluted Net (loss)/income per unit from continuing operations n/a $ (0.40 ) $ (0.40 ) 0.79 Net (loss)/income per unit from discontinued operations n/a - - - Net (loss)/income per common unit, diluted n/a $ (0.40 ) $ (0.40 ) 0.79 Three months ended September 30, 2017 General Partner Common Unitholders Subordinated Unitholders Preferred Unitholders (in thousands, except per unit data) Numerator: Interest in net (loss)/income: Net income from continuing operations $ 2 $ 445 $ 42 $ 1,644 Net (loss) from discontinued operations (1 ) (420 ) (40 ) - Total interest in net income $ 1 $ 25 $ 2 1,644 Denominator: Weighted average units used to compute basic EPU n/a 12,994 1,236 1,500 Weighted average units used to compute diluted EPU n/a 12,994 1,236 1,500 Net (loss)/income per limited partner unit, basic Net (loss)/income per unit from continuing operations n/a $ 0.03 $ 0.03 $ 1.10 Net (loss) per unit from discontinued operations n/a (0.03 ) (0.03 ) - Net (loss)/income per common unit, basic n/a $ - $ - $ 1.10 Net (loss)/income per limited partner unit, diluted Net (loss)/income per unit from continuing operations n/a $ 0.03 $ 0.03 $ 1.10 Net (loss) per unit from discontinued operations n/a (0.03 ) (0.03 ) - Net (loss)/income per common unit, diluted n/a $ - $ - $ 1.10 Nine months ended September 30, 2018 General Partner Common Unitholders Subordinated Unitholders Preferred Unitholders (in thousands, except per unit data) Numerator: Interest in net (loss)/income: Net (loss)/income from continuing operations $ (51 ) $ (11,144 ) $ (979 ) $ 1,788 Net (loss)/income from discontinued operations - - - - Total interest in net (loss)/income $ (51 ) $ (11,144 ) $ (979 ) $ 1,788 Denominator: Weighted average units used to compute basic EPU n/a 13,035 1,146 1,500 Weighted average units used to compute diluted EPU n/a 13,035 1,146 1,500 Net (loss)/income per limited partner unit, basic Net (loss)/income per unit from continuing operations n/a $ (0.86 ) $ (0.86 ) $ 1.19 Net (loss)/income per unit from discontinued operations n/a - - - Net (loss)/income per common unit, basic n/a $ (0.86 ) $ (0.86 ) $ 1.19 Net (loss)/income per limited partner unit, diluted Net (loss)/income per unit from continuing operations n/a $ (0.86 ) $ (0.86 ) 1.19 Net (loss)/income per unit from discontinued operations n/a - - - Net (loss)/income per common unit, diluted n/a $ (0.86 ) $ (0.86 ) 1.19 Nine months ended September 30, 2017 General Partner Common Unitholders Subordinated Unitholders Preferred Unitholders (in thousands, except per unit data) Numerator: Interest in net (loss/income): Net (loss)/income from continuing operations $ (15 ) $ (3,088 ) $ (295 ) 4,118 Net (loss) from discontinued operations (3 ) (715 ) (69 ) - Total interest in net (loss)/income $ (18 ) $ (3,803 ) $ (364 ) 4,118 Denominator: Weighted average units used to compute basic EPU n/a 12,942 1,236 1,500 Weighted average units used to compute diluted EPU n/a 12,942 1,236 1,500 Net (loss)/income per limited partner unit, basic Net (loss)/income per unit from continuing operations n/a $ (0.24 ) $ (0.24 ) $ 2.75 Net (loss) per unit from discontinued operations n/a (0.05 ) (0.05 ) - Net (loss)/income per common unit, basic n/a $ (0.29 ) $ (0.29 ) $ 2.75 Net (loss)/income per limited partner unit, diluted Net (loss)/income per unit from continuing operations n/a $ (0.24 ) $ (0.24 ) $ 2.75 Net (loss) per unit from discontinued operations n/a (0.05 ) (0.05 ) - Net (loss)/income per common unit, diluted n/a $ (0.29 ) $ (0.29 ) $ 2.75

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Schedule of Delivery Commitments	Coal Sales Contracts and Contingencies Year Tons (in thousands) Number of customers 2018 Q4 1,283 14 2019 2,107 10 2020 1,446 6
Schedule of Lease and Royalty Expense	Lease and royalty expense for the three and nine months ended September 30, 2018 and 2017 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 September 30, Nine months ended September 30, 2018 2017 2018 2017 (in thousands) Lease expense $ 1,242 $ 725 $ 2,648 $ 3,198 Royalty expense $ 3,320 $ 3,602 $ 10,431 $ 10,888

Major Customers (Tables)

Major Customers (Tables)	9 Months Ended
	Sep. 30, 2018
Risks and Uncertainties [Abstract]
Summary of Major Customers	The Partnership had sales or receivables from the following major customers that in each period equaled or exceeded 10% of revenues: September 30, December 31, Nine months Nine months 2018 2017 ended ended Receivable Receivable September 30, September 30, Balance Balance 2018 Sales 2017 Sales (in thousands) Javelin Global $ 4,628 $ 2,470 $ 29,267 $ - Dominion Energy 593 1,232 17,166 17,148 Integrity Coal - 2,238 15,534 18,152 Big Rivers Electric Corporation 642 - 15,586 18,387 LG&E 700 1,483 10,309 30,971

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Sep. 30, 2018
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue	The following table disaggregates revenue by type for each reportable segment for the three months ended September 30, 2018: Central Appalachia Northern Appalachia Rhino Western Illinois Basin Other Total Consolidated (in thousands) Coal sales Steam coal $ 13,979 $ 5,229 $ 10,254 $ 12,529 $ - $ 41,991 Met coal 29,875 - - - - 29,875 Other revenue 36 602 - - 61 699 Total $ 43,890 $ 5,831 $ 10,254 $ 12,529 $ 61 $ 72,565 The following table disaggregates revenue by type for each reportable segment for the three months ended September 30, 2017: Central Appalachia Northern Appalachia Rhino Western Illinois Basin Other Total Consolidated (in thousands) Coal sales Steam coal $ 9,580 $ 4,361 $ 9,080 $ 14,960 $ - $ 37,981 Met coal 18,285 - - - - 18,285 Other revenue 27 377 - 5 11 420 Total $ 27,892 $ 4,738 $ 9,080 $ 14,965 $ 11 $ 56,686 The following table disaggregates revenue by type for each reportable segment for the nine months ended September 30, 2018: Central Appalachia Northern Appalachia Rhino Western Illinois Basin Other Total Consolidated (in thousands) Coal sales Steam coal $ 38,840 $ 12,821 $ 26,970 $ 37,748 $ - $ 116,379 Met coal 64,004 - - - - 64,004 Other revenue 154 1,576 10 - 166 1,906 Total $ 102,998 $ 14,397 $ 26,980 $ 37,748 $ 166 $ 182,289 The following table disaggregates revenue by type for each reportable segment for the nine months ended September 30, 2017: Central Appalachia Northern Appalachia Rhino Western Illinois Basin Other Total Consolidated (in thousands) Coal sales Steam coal $ 26,634 $ 10,544 $ 25,138 $ 49,373 $ - $ 111,689 Met coal 50,131 - - - - 50,131 Other revenue 114 955 3 5 21 1,098 Total $ 76,879 $ 11,499 $ 25,141 $ 49,378 $ 21 $ 162,918

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Schedule of Reportable Segment Results of Operations	Reportable segment results of operations for the three months ended September 30, 2018 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 $ 43,890 $ 5,831 $ 10,255 $ 12,529 $ 60 $ 72,565 DD&A 2,200 385 978 1,974 92 5,629 Interest expense - - - - 2,831 2,831 Net income (loss) from continuing operations $ 3,619 $ (881 ) $ 56 $ (3,232 ) $ (4,092 ) $ (4,530 ) Reportable segment results of operations for the three months ended September 30, 2017 are as follows: Central Northern Rhino Illinois Total Appalachia Appalachia Western Basin Other Consolidated (in thousands) Total revenues $ 27,891 $ 4,738 $ 9,080 $ 14,965 $ 12 $ 56,686 DD&A 1,890 251 1,080 1,755 84 5,060 Interest expense - - - - 1,011 1,011 Net income (loss) from continuing operations $ 3,785 $ (449 ) $ 1,416 $ 107 $ (2,726 ) $ 2,133 Reportable segment results of operations for the nine months ended September 30, 2018 are as follows: Central Northern Rhino Illinois Total Appalachia Appalachia Western Basin Other Consolidated (in thousands) Total revenues $ 102,998 $ 14,397 $ 26,980 $ 37,748 $ 166 $ 182,289 DD&A 6,659 825 3,080 5,892 277 16,733 Interest expense 1 - - - 6,628 6,629 Net income (loss) from continuing operations $ 5,546 $ (3,473 ) $ 956 $ (7,441 ) $ (5,974 ) $ (10,386 ) Reportable segment results of operations for the nine months ended September 30, 2017 are as follows: Central Northern Rhino Illinois Total Appalachia Appalachia Western Basin Other Consolidated (in thousands) Total revenues $ 76,880 $ 11,500 $ 25,141 $ 49,377 $ 20 $ 162,918 DD&A 5,812 836 3,396 5,708 285 16,037 Interest expense - - - - 3,131 3,131 Net income (loss) from continuing operations $ 9,416 $ (2,480 ) $ 1,570 $ 1,736 $ (9,522 ) $ 720

Basis of Presentation and Org_2

Basis of Presentation and Organization (Details Narrative)	Jun. 30, 2016
Royal Energy Resources, Inc [Member]
Ownership percentage	100.00%

Discontinued Operations - Sched

Discontinued Operations - Schedule of Major Components of Net (Loss) from Discontinued Operations (Details) - Sands Hill Mining LLC [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total revenues		$ 1,659		$ 5,514
Cost of operations (exclusive of depreciation, depletion and amortization shown separately below)		1,704		5,128
Depreciation, depletion and amortization		127		458
Selling, general and administrative (exclusive of depreciation, depletion and amortization shown separately above)		8		34
Freight and handling costs		281		683
(Gain) on sale/disposal of assets, net				(2)
Total costs and expenses		2,120		6,301
(Loss) from discontinued operations before income taxes for the Sands Hill Mining disposal		(461)		(787)
Income taxes
Net (loss) from discontinued operations		(461)		(787)
Coal Sales [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total revenues		194		1,131
Limestone Sales [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total revenues		1,003		3,089
Other Revenues [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total revenues		$ 462		$ 1,294

Prepaid Expenses and Other Cu_3

Prepaid Expenses and Other Current Assets - Schedule of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Prepaid Expense and Other Assets, Current [Abstract]
Other prepaid expenses	$ 1,340	$ 920
Prepaid insurance	1,890	1,445
Prepaid leases	127	92
Supply inventory	306	434
Total Prepaid expenses and other	$ 3,663	$ 2,891

Property, Plant and Equipment_2

Property, Plant and Equipment (Details Narrative) - Sale Leaseback Agreement [Member] - Wintrust Commercial Finance [Member] $ in Thousands	May 17, 2018USD ($)
Proceeds from sale leaseback transactions, gross	$ 3,700
Proceeds used to reduce debt	$ 1,700
Lease agreement, term	Lease agreement has a thirty-six month term
Loss on sale of equipment	$ 200

Property, Plant and Equipment -

Property, Plant and Equipment - Schedule of Property, Plant and Equipment by Major Classification (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Total	$ 450,307	$ 440,843
Less accumulated depreciation, depletion and amortization	(273,518)	(263,520)
Net	176,789	177,323
Mining and Other Equipment and Related Facilities [Member]
Property, Plant and Equipment [Line Items]
Total	$ 305,595	298,293
Mining and Other Equipment and Related Facilities [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful Lives	2 years
Mining and Other Equipment and Related Facilities [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful Lives	20 years
Mine Development Costs [Member]
Property, Plant and Equipment [Line Items]
Total	$ 60,422	58,566
Mine Development Costs [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful Lives	1 year
Mine Development Costs [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful Lives	15 years
Coal Properties [Member]
Property, Plant and Equipment [Line Items]
Total	$ 64,070	64,070
Coal Properties [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful Lives	1 year
Coal Properties [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful Lives	15 years
Land [Member]
Property, Plant and Equipment [Line Items]
Total	$ 13,783	14,687
Construction Work in Process [Member]
Property, Plant and Equipment [Line Items]
Total	$ 6,437	$ 5,227

Property, Plant and Equipment_3

Property, Plant and Equipment - Schedule of Depreciation, Depletion and Amortization (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Property, Plant and Equipment [Line Items]
Total depreciation, depletion and amortization	$ 5,629	$ 5,060	$ 16,733	$ 16,037
Mining and Other Equipment and Related Facilities [Member]
Property, Plant and Equipment [Line Items]
Total depreciation, depletion and amortization	4,276	3,843	12,607	12,324
Coal Properties and Oil and Natural Gas Properties [Member]
Property, Plant and Equipment [Line Items]
Total depreciation, depletion and amortization	467	450	1,419	1,221
Mine Development Costs [Member]
Property, Plant and Equipment [Line Items]
Total depreciation, depletion and amortization	777	721	2,348	2,265
Asset Retirement Costs [Member]
Property, Plant and Equipment [Line Items]
Total depreciation, depletion and amortization	$ 109	$ 46	$ 359	$ 227

Other Non-Current Assets (Detai

Other Non-Current Assets (Details Narrative) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Other Assets, Noncurrent Disclosure [Abstract]
Non-current receivable	$ 27,806	$ 27,806
Workers' compensation liability, noncurrent	$ 27,800	$ 27,800

Other Non-Current Assets - Sche

Other Non-Current Assets - Schedule of Other Non-Current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Other Assets, Noncurrent Disclosure [Abstract]
Deposits and other	$ 1,260	$ 423
Due (to)/from Rhino GP	(30)	(61)
Non-current receivable	27,806	27,806
Deferred expenses	318	340
Total	$ 29,354	$ 28,508

Accrued Expenses and Other Cu_3

Accrued Expenses and Other Current Liabilities - Schedule of Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Payables and Accruals [Abstract]
Payroll, bonus and vacation expense	$ 1,988	$ 2,633
Non income taxes	2,878	2,738
Royalty expenses	1,713	2,410
Accrued interest	161	132
Health claims	746	871
Workers' compensation & pneumoconiosis	1,750	1,750
Other	1,280	652
Total	$ 10,516	$ 11,186

Debt (Details Narrative)

Debt (Details Narrative) - USD ($) $ in Thousands	Apr. 17, 2018	Dec. 27, 2017	Sep. 30, 2018	Sep. 30, 2018	Dec. 31, 2017
Line of Credit Facility [Line Items]
Accrued preferred distributions			$ 1,788	$ 1,788	$ 6,038
Base Rate [Member]
Line of Credit Facility [Line Items]
Debt instrument bear interest percentage		2.00%
Financing Agreement [Member]
Line of Credit Facility [Line Items]
Debt instruments interest terms				Loans made pursuant to the Financing Agreement are, at the Operating Company's option, either "Reference Rate Loans" or "LIBOR Rate Loans." Reference Rate Loans bear interest at the greatest of (a) 4.25% per annum, (b) the Federal Funds Rate plus 0.50% per annum, (c) the LIBOR Rate (calculated on a one-month basis) plus 1.00% per annum or (d) the Prime Rate (as published in the Wall Street Journal) or if no such rate is published, the interest rate published by the Federal Reserve Board as the "bank prime loan" rate or similar rate quoted therein, in each case, plus an applicable margin of 9.00% per annum (or 12.00% per annum if the Operating Company has elected to capitalize an interest payment pursuant to the PIK Option, as described below). LIBOR Rate Loans bear interest at the greater of (x) the LIBOR for such interest period divided by 100% minus the maximum percentage prescribed by the Federal Reserve for determining the reserve requirements in effect with respect to eurocurrency liabilities for any Lender, if any, and (y) 1.00%, in each case, plus 10.00% per annum (or 13.00% per annum if the Borrowers have elected to capitalize an interest payment pursuant to the PIK Option). Interest payments are due on a monthly basis for Reference Rate Loans and one-, two- or three-month periods, at the Operating Company's option, for LIBOR Rate Loans. If there is no event of default occurring or continuing, the Operating Company may elect to defer payment on interest accruing at 6.00% per annum by capitalizing and adding such interest payment to the principal amount of the applicable term loan (the "PIK Option").
Debt covenant description				Fixed Charge Coverage Ratio of the Partnership and its subsidiaries to be less than 1.20 to 1.00
Partnership borrowed amount			$ 29,800	$ 29,800
Short term variable interest rate			12.25%	12.25%
Fixed interest rate on borrowings percentage				12.34%
Financing Agreement [Member] | Libor Plus [Member]
Line of Credit Facility [Line Items]
Short term variable interest rate			10.00%	10.00%
Financing Agreement [Member] | Series A Preferred Units [Member]
Line of Credit Facility [Line Items]
Accrued preferred distributions					$ 6,038
Financing Agreement [Member] | December 31, 2018 [Member]
Line of Credit Facility [Line Items]
Debt due date				Dec. 27, 2020
Loan payable on quarterly basis				$ 375
Debt instrument description				Borrowers must make certain prepayments over the term of any loans outstanding, including: (i) the payment of 25% of Excess Cash Flow (as that term is defined in the Financing Agreement) of the Partnership and its subsidiaries for each fiscal year, commencing with respect to the year ending December 31, 2019, (ii) subject to certain exceptions, the payment of 100% of the net cash proceeds from the dispositions of certain assets, the incurrence of certain indebtedness or receipts of cash outside of the ordinary course of business, and (iii) the payment of the excess of the outstanding principal amount of term loans outstanding over the amount of the Collateral Coverage Amount (as that term is defined in the Financing Agreement). In addition, the Lenders are entitled to (i) certain fees, including 1.50% per annum of the unused Delayed Draw Term Loan Commitment for as long as such commitment exists, (ii) for the 12-month period following the execution of the Financing Agreement, a make-whole amount equal to the interest and unused Delayed Draw Term Loan Commitment fees that would have been payable but for the occurrence of certain events, including among others, bankruptcy proceedings or the termination of the Financing Agreement by the Operating Company, and (iii) audit and collateral monitoring fees and origination and exit fees.
Financing Agreement [Member] | October 26, 2018 [Member]
Line of Credit Facility [Line Items]
Repayments of loan				$ 5,000
Financing Agreement [Member] | Effective Date Term Loan Commitment [Member]
Line of Credit Facility [Line Items]
Debt instrument principal amount		$ 40,000
Financing Agreement [Member] | Delayed Draw Term Loan Commitment [Member]
Line of Credit Facility [Line Items]
Debt instrument principal amount		40,000
Financing Agreement [Member] | Cortland Capital Market Services LLC [Member]
Line of Credit Facility [Line Items]
Debt instrument principal amount		$ 80,000
Debt due date		Dec. 27, 2020
Financing Agreement [Member] | Mammoth Energy Services, Inc. [Member]
Line of Credit Facility [Line Items]
Proceed from sale of shares				$ 5,000
Percentage of additional shares sold, description	Additionally, the amendments provided that the Partnership could sell additional shares of Mammoth Energy Services Inc. stock and retain 50% of the proceeds with the other 50% used to reduce debt.
Proceeds from sale of stock reduced of outstanding debt			$ 3,400
Letter of Credit Facility Agreement [Member]
Line of Credit Facility [Line Items]
Percentage of quarterly fee description		5.00%
Commitment Fee Amount		$ 100
Letter of credit facility description		The Partnership's obligations under the LoC Facility Agreement were secured by a first lien security interest on a cash collateral account that was required to contain no less than 105% of the face value of the outstanding letters of credit.

Debt - Schedule of Debt (Detail

Debt - Schedule of Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
Note payable-Financing Agreement	$ 34,778	$ 40,000
Note payable-other debt	1,095
Net unamortized debt issuance costs	(4,135)	(4,688)
Net unamortized original issue discount	(948)	(1,264)
Total	30,790	34,048
Less current portion	(7,595)	(5,475)
Long-term debt	$ 23,195	$ 28,573

Asset Retirement Obligations -

Asset Retirement Obligations - Schedule of Asset Retirement Obligations (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Asset Retirement Obligation Disclosure [Abstract]
Balance at beginning of period (including current portion)	$ 18,662	$ 19,108	$ 19,108
Accretion expense	954	$ 1,422	1,493
Adjustment resulting from disposal of property			(223)
Adjustments to the liability from annual recosting and other			(1,656)
Liabilities settled	(259)		(60)
Balance at end of period	19,357		18,662
Less current portion of asset retirement obligation	(498)		(498)
Long-term portion of asset retirement obligation	$ 18,859		$ 18,164

Employee Benefits - Schedule of

Employee Benefits - Schedule of Expense Under Defined Contribution Savings Plan (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Retirement Benefits [Abstract]
401(k) plan expense	$ 459	$ 376	$ 1,288	$ 1,070

Partners' Capital (Details Narr

Partners' Capital (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands	Apr. 12, 2018	Jan. 19, 2018	Sep. 02, 2017	Dec. 30, 2016	Mar. 31, 2018	Sep. 30, 2018	Dec. 31, 2017	Sep. 30, 2018
Mammoth Energy Services, Inc. [Member]
Number of shares sold	232,347	232,347
Cash consideration received from sale of stock	$ 7,100	$ 4,800
Reduction in debt with proceeds from sale of stock	3,400
Gain on sale of partnership capital	3,600	2,900
Other comprehensive income	$ 4,000	$ 2,600
Fair value of market adjustments						$ 3,900	$ 2,600	$ 3,900
Shares owned by partnership						104,100		104,100
Series A Preferred Units [Member]
Partnership paid for distributions earned					$ 6,000
Partnership accrued						$ 1,800
Series A Preferred Units [Member] | Minimum [Member]
Debt conversion price per share				$ 2
Series A Preferred Units [Member] | Maximum [Member]
Debt conversion price per share				$ 10
Royal Common Stock [Member]
Weighted average closing price, conversion percent			75.00%
Debt conversion price per share			$ 4.51
Conversion of debt			$ 4,100
Common stock issued for conversion			914,797
Royal Common Stock [Member] | Minimum [Member]
Debt conversion price per share			$ 3.50
Royal Common Stock [Member] | Maximum [Member]
Debt conversion price per share			$ 7.50
Fourth Amended and Restated Agreement [Member] | Series A Preferred Units [Member]
Units of partnership interest, description				(i) 50% of the CAM Mining free cash flow (as defined below) and (ii) an amount equal to the number of outstanding Series A preferred units multiplied by $0.80. "CAM Mining free cash flow" is defined in the Amended and Restated Partnership Agreement as (i) the total revenue of the Partnership's Central Appalachia business segment, minus (ii) the cost of operations (exclusive of depreciation, depletion and amortization) for the Partnership's Central Appalachia business segment, minus (iii) an amount equal to $6.50, multiplied by the aggregate number of coal tons sold by the Partnership from its Central Appalachia business segment.
Indebtedness				$ 50,000
Unpaid distribution				$ 10
Weighted average closing price, conversion percent				75.00%
Common Unit Warrants [Member]
Number of warrant issuance shares							683,888
Warrant exercise price per share							$ 1.95
Warrant expiration term							5 years
Common Unit Warrants [Member] | Warrant Agreement [Member]
Proceeds from warrant							$ 40,000
Fair value of warrants							$ 1,300
Partnership's Common Units [Member]
Partnership accumulated arrearages						$ 614,500		$ 614,500
Partnership's Common Units [Member] | Minimum [Member]
Unpaid distribution								$ 4.45

Earnings Per Unit ('EPU') (Deta

Earnings Per Unit ('EPU') (Details Narrative)	9 Months Ended
	Sep. 30, 2018shares
Earnings Per Unit [Abstract]
Potential antidilutive common units warrants	683,888

Earnings Per Unit ('EPU') - Sch

Earnings Per Unit ('EPU') - Schedule of Calculation of Numerator and Denominator in Earnings Per Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Unit [Line Items]
Interest in net (loss)/income: Net (loss)/income from continuing operations	$ (4,530)	$ 2,133	$ (10,386)	$ 720
Interest in net (loss)/income: Net (loss)/income from discontinued operations		(461)		(787)
Total interest in net (loss)/income	(4,530)	1,672	(10,386)	(67)
General Partner's [Member]
Earnings Per Unit [Line Items]
Interest in net (loss)/income: Net (loss)/income from continuing operations	(24)	2	(51)	(15)
Interest in net (loss)/income: Net (loss)/income from discontinued operations		(1)		(3)
Total interest in net (loss)/income	$ (24)	$ 1	$ (51)	$ (18)
Weighted average units used to compute basic EPU
Weighted average units used to compute diluted EPU
Net (loss)/income per unit from continuing operations, basic
Net (loss)/income per unit from discontinued operations, basic
Net (loss)/income per common unit, basic
Net (loss)/income per unit from continuing operations, diluted
Net (loss)/income per unit from discontinued operations, diluted
Net (loss)/income per common unit, diluted
Common Unitholders' [Member]
Earnings Per Unit [Line Items]
Interest in net (loss)/income: Net (loss)/income from continuing operations	$ (5,228)	$ 445	$ (11,144)	$ (3,088)
Interest in net (loss)/income: Net (loss)/income from discontinued operations		(420)		(715)
Total interest in net (loss)/income	$ (5,228)	$ 25	$ (11,144)	$ (3,803)
Weighted average units used to compute basic EPU	13,098,000	12,994,000	13,035,000	12,942,000
Weighted average units used to compute diluted EPU	13,098,000	12,994,000	13,035,000	12,942,000
Net (loss)/income per unit from continuing operations, basic	$ (0.40)	$ 0.03	$ (0.86)	$ (0.24)
Net (loss)/income per unit from discontinued operations, basic		(0.03)		(0.05)
Net (loss)/income per common unit, basic	(0.40)		(0.86)	(0.29)
Net (loss)/income per unit from continuing operations, diluted	(0.40)	0.03	(0.86)	(0.24)
Net (loss)/income per unit from discontinued operations, diluted		(0.03)		(0.05)
Net (loss)/income per common unit, diluted	$ (0.40)		$ (0.86)	$ (0.29)
Subordinated Unitholders' [Member]
Earnings Per Unit [Line Items]
Interest in net (loss)/income: Net (loss)/income from continuing operations	$ (457)	$ 42	$ (979)	$ (295)
Interest in net (loss)/income: Net (loss)/income from discontinued operations		(40)		(69)
Total interest in net (loss)/income	$ (457)	$ 2	$ (979)	$ (364)
Weighted average units used to compute basic EPU	1,146,000	1,236,000	1,146,000	1,236,000
Weighted average units used to compute diluted EPU	1,146,000	1,236,000	1,146,000	1,236,000
Net (loss)/income per unit from continuing operations, basic	$ (0.40)	$ 0.03	$ (0.86)	$ (0.24)
Net (loss)/income per unit from discontinued operations, basic		(0.03)		(0.05)
Net (loss)/income per common unit, basic	(0.40)		(0.86)	(0.29)
Net (loss)/income per unit from continuing operations, diluted	(0.40)	0.03	(0.86)	(0.24)
Net (loss)/income per unit from discontinued operations, diluted		(0.03)		(0.05)
Net (loss)/income per common unit, diluted	$ (0.40)		$ (0.86)	$ (0.29)
Preferred Unitholders' [Member]
Earnings Per Unit [Line Items]
Interest in net (loss)/income: Net (loss)/income from continuing operations	$ 1,179	$ 1,644	$ 1,788	$ 4,118
Interest in net (loss)/income: Net (loss)/income from discontinued operations
Total interest in net (loss)/income	$ 1,179	$ 1,644	$ 1,788	$ 4,118
Weighted average units used to compute basic EPU	1,500,000	1,500,000	1,500,000	1,500,000
Weighted average units used to compute diluted EPU	1,500,000	1,500,000	1,500,000	1,500,000
Net (loss)/income per unit from continuing operations, basic	$ 0.79	$ 1.10	$ 1.19	$ 2.75
Net (loss)/income per unit from discontinued operations, basic
Net (loss)/income per common unit, basic	0.79	1.10	1.19	2.75
Net (loss)/income per unit from continuing operations, diluted	0.79	1.10	1.19	2.75
Net (loss)/income per unit from discontinued operations, diluted
Net (loss)/income per common unit, diluted	$ 0.79	$ 1.10	$ 1.19	$ 2.75

Commitments and Contingencies_2

Commitments and Contingencies (Details Narrative) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Purchase coal expense	$ 31		$ 31

Commitments and Contingencies -

Commitments and Contingencies - Schedule of Delivery Commitments (Details)	9 Months Ended
	Sep. 30, 2018NumberT
Commitments and Contingencies Disclosure [Abstract]
Tons, 2018 Q4 | T	1,283,000
Tons, 2019 | T	2,107,000
Tons, 2020 | T	1,146,000
Number of customers, 2018 Q4 | Number	14
Number of customers, 2019 | Number	10
Number of customers, 2020 | Number	6

Commitments and Contingencies_3

Commitments and Contingencies - Schedule of Lease and Royalty Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Lease expense	$ 1,242	$ 725	$ 2,648	$ 3,198
Royalty expense	$ 3,320	$ 3,602	$ 10,431	$ 10,888

Major Customers - Summary of Ma

Major Customers - Summary of Major Customers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Revenue, Major Customer [Line Items]
Receivable balance	$ 25,410		$ 25,410		$ 20,386
Sales	72,565	$ 56,686	182,289	$ 162,918
Javelin Global [Member]
Revenue, Major Customer [Line Items]
Receivable balance	4,628		4,628		2,470
Sales			29,267
Dominion Energy [Member]
Revenue, Major Customer [Line Items]
Receivable balance	593		593		1,232
Sales			17,166	17,148
Integrity Coal [Member]
Revenue, Major Customer [Line Items]
Receivable balance					2,238
Sales			15,534	18,152
Big Rivers Electric Corporation [Member]
Revenue, Major Customer [Line Items]
Receivable balance	642		642
Sales			15,586
LG&E [Member]
Revenue, Major Customer [Line Items]
Receivable balance	$ 700		700		$ 1,483
Sales			$ 10,309	30,971
Big Rivers Electric Corporation [Member]
Revenue, Major Customer [Line Items]
Sales				$ 18,387

Revenue (Details Narrative)

Revenue (Details Narrative)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Sales Revenue, Net [Member]
Partnership total revenue, percentage	99.00%	99.00%	99.00%	99.00%
Other Revenues [Member]
Partnership total revenue, percentage	1.00%	1.00%	1.00%	1.00%

Revenue - Schedule of Disaggreg

Revenue - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Total revenue	$ 72,565	$ 56,686	$ 182,289	$ 162,918
Steam Coal Revenue [Member]
Total revenue	41,991	37,981	116,379	111,689
Met Coal Revenue [Member]
Total revenue	29,875	18,285	64,004	50,131
Other Revenue [Member]
Total revenue	699	420	1,906	1,098
Central Appalachia [Member]
Total revenue	43,890	27,892	102,998	76,879
Central Appalachia [Member] | Steam Coal Revenue [Member]
Total revenue	13,979	9,580	38,840	26,634
Central Appalachia [Member] | Met Coal Revenue [Member]
Total revenue	29,875	18,285	64,004	50,131
Central Appalachia [Member] | Other Revenue [Member]
Total revenue	36	27	154	114
Northern Appalachia [Member]
Total revenue	5,831	4,738	14,397	11,499
Northern Appalachia [Member] | Steam Coal Revenue [Member]
Total revenue	5,229	4,361	12,821	10,544
Northern Appalachia [Member] | Met Coal Revenue [Member]
Total revenue
Northern Appalachia [Member] | Other Revenue [Member]
Total revenue	602	377	1,576	955
Rhino Western [Member]
Total revenue	10,254	9,080	26,980	25,141
Rhino Western [Member] | Steam Coal Revenue [Member]
Total revenue	10,254	9,080	26,970	25,138
Rhino Western [Member] | Met Coal Revenue [Member]
Total revenue
Rhino Western [Member] | Other Revenue [Member]
Total revenue			10	3
Illinois Basin [Member]
Total revenue	12,529	14,965	37,748	49,378
Illinois Basin [Member] | Steam Coal Revenue [Member]
Total revenue	12,529	14,960	37,748	49,373
Illinois Basin [Member] | Met Coal Revenue [Member]
Total revenue
Illinois Basin [Member] | Other Revenue [Member]
Total revenue		5		5
Other [Member]
Total revenue	61	11	166	21
Other [Member] | Steam Coal Revenue [Member]
Total revenue
Other [Member] | Met Coal Revenue [Member]
Total revenue
Other [Member] | Other Revenue [Member]
Total revenue	$ 61	$ 11	$ 166	$ 21

Fair Value Measurements (Detail

Fair Value Measurements (Details Narrative)	Sep. 30, 2018shares
Mammoth Energy Services, Inc. [Member]
Shares owned by partnership	104,100

Supplemental Disclosures of C_2

Supplemental Disclosures of Cash Flow Information (Details Narrative) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Other Significant Noncash Transactions [Line Items]
Interest paid	$ 4,900	$ 2,100
Accounts Payable [Member]
Other Significant Noncash Transactions [Line Items]
Additions to property, plant, and equipment	$ 1,100	$ 1,300

Segment Information (Details Na

Segment Information (Details Narrative)	9 Months Ended
	Sep. 30, 2018Segments
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		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Segment Reporting Information [Line Items]
Total revenues	$ 72,565	$ 56,686	$ 182,289	$ 162,918
DD&A	5,629	5,060	16,733	16,037
Interest expense	2,831	1,011	6,629	3,131
Net Income (loss) from continuing operations	(4,530)	2,133	(10,386)	720
Central Appalachia [Member]
Segment Reporting Information [Line Items]
Total revenues	43,890	27,891	102,998	76,880
DD&A	2,200	1,890	6,659	5,812
Interest expense			1
Net Income (loss) from continuing operations	3,619	3,785	5,546	9,416
Northern Appalachia [Member]
Segment Reporting Information [Line Items]
Total revenues	5,831	4,738	14,397	11,500
DD&A	385	251	825	836
Interest expense
Net Income (loss) from continuing operations	(881)	(449)	(3,473)	(2,480)
Rhino Western [Member]
Segment Reporting Information [Line Items]
Total revenues	10,255	9,080	26,980	25,141
DD&A	978	1,080	3,080	3,396
Interest expense
Net Income (loss) from continuing operations	56	1,416	956	1,570
Illinois Basin [Member]
Segment Reporting Information [Line Items]
Total revenues	12,529	14,965	37,748	49,377
DD&A	1,974	1,755	5,892	5,708
Interest expense
Net Income (loss) from continuing operations	(3,232)	107	(7,441)	1,736
Segment Other [Member]
Segment Reporting Information [Line Items]
Total revenues	60	12	166	20
DD&A	92	84	277	285
Interest expense	2,831	1,011	6,628	3,131
Net Income (loss) from continuing operations	$ (4,092)	$ (2,726)	$ (5,974)	$ (9,522)