East Dubuque Nitrogen Partners (RNF) 10-Q 12 May 14 2014 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2014	Apr. 30, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	31-Mar-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'
Entity Registrant Name	'Rentech Nitrogen Partners, L.P.	'
Entity Central Index Key	'0001525998	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	38,890,048

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets	'	'
Cash	$37,278	$34,060
Accounts receivable	17,177	7,434
Inventories	51,518	31,102
Prepaid expenses and other current assets	4,620	4,942
Other receivables, net	1,488	2,227
Total current assets	112,081	79,765
Property, plant and equipment, net	239,599	234,359
Construction in progress	32,937	33,531
Other assets	'	'
Goodwill	27,202	27,202
Intangible assets	22,002	22,298
Debt issuance costs	8,139	8,404
Other assets	775	785
Total other assets	58,118	58,689
Total assets	442,735	406,344
Current liabilities	'	'
Accounts payable	18,270	9,793
Payable to general partner	4,804	5,353
Accrued liabilities	11,049	18,444
Deferred revenue	49,438	20,365
Accrued interest	9,822	4,622
Total current liabilities	93,383	58,577
Long-term liabilities	'	'
Debt	320,000	320,000
Asset retirement obligation	2,834	2,822
Other	1,754	1,820
Total long-term liabilities	324,588	324,642
Total liabilities	417,971	383,219
Commitments and contingencies (Note 6)	'	'
Partners' Capital	'	'
Common unitholders -38,889 units issued and outstanding at March 31, 2014 and December 31, 2013	23,467	21,816
Accumulated other comprehensive income	1,297	1,309
General partner's interest	'	'
Total partners' capital	24,764	23,125
Total liabilities and partners' capital	$442,735	$406,344

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Statement Of Financial Position [Abstract]	'	'
Common unitholders, units issued	38,889	38,889
Common unitholders, units outstanding	38,889	38,889

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Income Statement [Abstract]	'	'
Revenues	$56,280	$59,564
Cost of sales	42,516	36,845
Gross profit	13,764	22,719
Operating expenses	'	'
Selling, general and administrative expense	5,278	4,741
Depreciation and amortization	333	948
Other (income) expense	-6	15
Total operating expenses	5,605	5,704
Operating income	8,159	17,015
Other expenses, net	'	'
Interest expense	-5,004	-1,803
Other expense, net	'	-123
Total other expenses, net	-5,004	-1,926
Income before income taxes	3,155	15,089
Income tax expense	30	80
Net income	$3,125	$15,009
Net income per common unit allocated to common unitholders - Basic	$0.08	$0.38
Net income per common unit allocated to common unitholders - Diluted	$0.08	$0.38
Weighted-average units used to compute net income per common unit:	'	'
Basic	38,889	38,839
Diluted	38,936	38,891

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Statement Of Income And Comprehensive Income [Abstract]	'	'
Net income	$3,125	$15,009
Other comprehensive income (loss):	'	'
Pension and postretirement plan adjustments	-12	6
Other comprehensive income (loss)	-12	6
Comprehensive income	$3,113	$15,015

Consolidated_Statement_of_Part

Consolidated Statement of Partners' Capital (USD $)	Total	Affiliated Entity [Member]	Non Affiliated Entity [Member]	Common Stock [Member]	Common Stock [Member]	Common Stock [Member]	Accumulated Other Comprehensive Income [Member]
In Thousands					Affiliated Entity [Member]	Non Affiliated Entity [Member]
Beginning Balance at Dec. 31, 2013	$23,125	'	'	$21,816	'	'	$1,309
Beginning Balance, Units at Dec. 31, 2013	'	'	'	38,889	'	'	'
Common units	-16	'	'	-16	'	'	'
Distributions to common unitholders	-1,954	-1,162	-792	'	-1,162	-792	'
Unit-based compensation expense	496	'	'	496	'	'	'
Net income (loss)	3,125	'	'	3,125	'	'	'
Other comprehensive loss	-12	'	'	'	'	'	-12
Ending Balance at Mar. 31, 2014	$24,764	'	'	$23,467	'	'	$1,297
Ending Balance, Units at Mar. 31, 2014	'	'	'	38,889	'	'	'

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities	'	'
Net income	$3,125	$15,009
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	3,304	3,608
Utilization of spare parts	2,084	893
Write-down of inventory	'	545
Non-cash interest expense	260	286
Unit-based compensation	496	629
Other	-7	-84
Changes in operating assets and liabilities:	'	'
Accounts receivable	-9,743	-26
Inventories	-17,877	-23,651
Prepaid expenses and other current assets	1,028	367
Other receivables	739	-105
Other assets	-695	'
Accounts payable	8,790	-2,346
Accrued liabilities, accrued payroll and other	-2,677	-2,962
Deferred revenue	29,074	30,005
Accrued interest	5,156	'
Net cash provided by operating activities	23,057	22,168
Cash flows from investing activities	'	'
Capital expenditures	-17,322	-12,333
Other items	-563	3
Net cash used in investing activities	-17,885	-12,330
Cash flows from financing activities	'	'
Proceeds from credit facilities	'	15,600
Payments of debt	'	-1,938
Net cash used in financing activities	-1,954	-15,584
Increase (decrease) in cash	3,218	-5,746
Cash, beginning of period	34,060	55,799
Cash, end of period	37,278	50,053
Purchase of property, plant, equipment and construction in progress in accounts payable and accrued liabilities	5,441	4,976
Affiliates [Member]	'	'
Cash flows from financing activities	'	'
Distributions to common unitholders - affiliates	-1,162	-17,437
Non Affiliates [Member]	'	'
Cash flows from financing activities	'	'
Distributions to common unitholders - affiliates	($792)	($11,809)

Basis_of_Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
Basis of Presentation	'
	Note 1 — Basis of Presentation
	The accompanying unaudited consolidated financial statements of Rentech Nitrogen Partners, L.P. (the “Partnership”) and its consolidated subsidiaries have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) and in compliance with the instructions to Form 10-Q and Article 10 of Regulation S-X, neither of which requires all of the information and footnotes required by GAAP for complete financial statements. Accordingly, the accompanying financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, the unaudited consolidated financial statements reflect all adjustments, consisting only of normal recurring adjustments, considered necessary for a fair statement of the Partnership’s financial position as of March 31, 2014, and the results of operations and cash flows for the periods presented. The accompanying consolidated financial statements include the accounts of the Partnership and its wholly owned subsidiaries. All significant intercompany accounts and transactions have been eliminated in consolidation. Operating results for the three months ended March 31, 2014 are not necessarily indicative of the results that may be expected for the year ending December 31, 2014 or any other reporting period. The information included in this Form 10-Q should be read in conjunction with the consolidated financial statements and notes thereto included in the Partnership’s Annual Report on Form 10-K for the year ended December 31, 2013 filed with the Securities and Exchange Commission (the “SEC”) on March 17, 2014 (the “Annual Report”).
	The Partnership’s assets consist primarily of all of the equity interests, directly or indirectly held by it, of Rentech Nitrogen, LLC (“RNLLC”), which owns a fertilizer facility in East Dubuque, Illinois (the “East Dubuque Facility”), and Rentech Nitrogen Pasadena, LLC (“RNPLLC”), which owns a fertilizer facility in Pasadena, Texas (the “Pasadena Facility”).
	The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities as of the date of the consolidated financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
	Fair values of cash, receivables, deposits, other current assets, accounts payable, accrued liabilities and other current liabilities were assumed to approximate carrying value since they are short term and can be settled on demand. These items meet the definition of Level 1 financial instruments as defined in Note 2 – Fair Value.
	Accounting guidance establishes accounting and reporting requirements for derivative instruments and hedging activities. This guidance requires recognition of all derivative instruments as assets or liabilities on the Partnership’s balance sheet and measurement of those instruments at fair value. The accounting treatment of changes in fair value is dependent upon whether or not a derivative instrument is designated as a hedge and if so, the type of hedge. The Partnership currently does not designate any of its derivatives as hedges for financial accounting purposes. Gains and losses on derivative instruments not designated as hedges are currently included in earnings and reported under cash from operating activities.
	Goodwill
	Goodwill represents the excess of the purchase price over the fair value of identifiable net assets acquired in a business acquisition. The Partnership tests goodwill for impairment annually, or more often if an event or circumstance indicates that an impairment may have occurred. The analysis of the potential impairment of goodwill is a two step process. Step one of the impairment test consists of comparing the fair value of the reporting unit with the aggregate carrying value, including goodwill. If the carrying value of a reporting unit exceeds the reporting unit’s fair value, step two must be performed to determine the amount, if any, of the goodwill impairment.
	There are significant assumptions involved in performing a goodwill impairment test, which include discount rates, terminal growth rates, future prices of end products and raw materials, terminal values and production volumes. The various valuation methods used (income approach, replacement cost and market approach) are also weighted in determining fair market value. Changes to any of these assumptions could increase or decrease the fair value of the Pasadena reporting unit. The Partnership does not believe any impairment is required at March 31, 2014.
	The Partnership has evaluated events occurring between March 31, 2014 and the date of these financial statements to ensure that such events are properly reflected in these statements.

Fair_Value

Fair Value	3 Months Ended
	Mar. 31, 2014
Derivative Instruments And Hedging Activities Disclosure [Abstract]	'
Fair Value	'
	Note 2 — Fair Value
	Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date in a principal or most advantageous market. Fair value is a market-based measurement that is determined based on inputs, which refer broadly to assumptions that market participants use in pricing assets or liabilities. These inputs can be readily observable, market corroborated or generally unobservable inputs. The Partnership makes certain assumptions it believes that market participants would use in pricing assets or liabilities, including assumptions about risk, and the risks inherent in the inputs to valuation techniques. Credit risk of the Partnership and its counterparties is incorporated in the valuation of assets and liabilities. The Partnership believes it uses valuation techniques that maximize the use of observable market-based inputs and minimize the use of unobservable inputs.
	A fair value hierarchy has been established that prioritizes the inputs to valuation techniques used to measure fair value in three broad levels. The fair value hierarchy gives the highest priority to quoted prices (unadjusted) in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). In some cases, the inputs used to measure fair value might fall in different levels of the fair value hierarchy. All assets and liabilities are required to be classified in their entirety based on the lowest level of input that is significant to the fair value measurement in its entirety. Assessing the significance of a particular input may require judgment considering factors specific to the asset or liability, and may affect the valuation of the asset or liability and its placement within the fair value hierarchy. The Partnership classifies fair value balances based on the fair value hierarchy, defined as follows:
		•		Level 1 — Consists of unadjusted quoted prices in active markets for identical assets or liabilities that the Partnership has the ability to access as of the reporting date.
		•		Level 2 — Consists of inputs other than quoted prices included within Level 1 that are directly observable for the asset or liability or indirectly observable through corroboration with observable market data.
		•		Level 3 — Consists of unobservable inputs for assets or liabilities whose fair value is estimated based on internally developed models or methodologies using inputs that are generally less readily observable and supported by little, if any, market activity at the measurement date. Unobservable inputs are developed based on the best available information and subject to cost-benefit constraints.
	The following table presents the financial instruments that require fair value disclosure as of March 31, 2014.
			Fair Value						Carrying Value
			(in thousands)
			Level 1		Level 2		Level 3
	Liabilities
	Notes		$	315,802	$	—	$	—	$	320,000
	The following table presents the financial instruments that require fair value disclosure as of December 31, 2013.
			Fair Value						Carrying Value
			(in thousands)
			Level 1		Level 2		Level 3
	Liabilities
	Notes		$	318,400	$	—	$	—	$	320,000
	Notes
	The $320.0 million of 6.5% second lien senior secured notes due 2021 (the “Notes”) are deemed to be Level 1 financial instruments because there was an active market for such debt. The fair value of such debt had been determined based on market prices.
	The levels within the fair value hierarchy at which the Partnership’s financial instruments have been evaluated have not changed for any of the Partnership’s financial instruments during the three months ended March 31, 2014.

Inventories

Inventories	3 Months Ended
	Mar. 31, 2014
Inventory Disclosure [Abstract]	'
Inventories	'
	Note 3 — Inventories
	Inventories consisted of the following:
		As of
		March 31,		December 31,
		2014		2013
		(in thousands)
	Finished goods	$	48,074	$	26,690
	Raw materials		3,189		4,193
	Other		255		219
	Total inventory	$	51,518	$	31,102
	During the three months ended March 31, 2013, the Partnership wrote-down the value of the Pasadena Facility’s sulfur and sulfuric acid inventory by approximately $0.5 million to market value. This expense is reflected in cost of goods sold.

Property_Plant_and_Equipment

Property, Plant and Equipment	3 Months Ended
	Mar. 31, 2014
Property Plant And Equipment [Abstract]	'
Property, Plant and Equipment	'
	Note 4 — Property, Plant and Equipment
	Property, plant and equipment consisted of the following:
		As of
		March 31,			December 31,
		2014			2013
		(in thousands)
	Land and land improvements	$	22,569		$	22,540
	Buildings and building improvements		28,430			27,307
	Machinery and equipment and catalysts		256,417			246,963
	Furniture, fixtures and office equipment		300			258
	Computer equipment and computer software		3,833			3,759
	Vehicles		186			186
	Other		210			210
			311,945			301,223
	Less: accumulated depreciation		(72,346	)		(66,864	)
	Total property, plant and equipment, net	$	239,599		$	234,359
	The construction in progress balance at March 31, 2014 of approximately $32.9 million, which includes $1.2 million of capitalized interest costs, represents primarily the costs associated with the power generation project and the sulfuric acid converter replacement project.

Debt

Debt	3 Months Ended
	Mar. 31, 2014
Debt Disclosure [Abstract]	'
Debt	'
	Note 5 — Debt
	Credit Agreement
	On April 12, 2013, the Partnership and Finance Corporation (collectively the “Borrowers”) entered into a credit agreement (the “Credit Agreement”). The Credit Agreement consists of a $35.0 million senior secured revolving credit facility (the “Credit Facility”). The Borrowers may use the Credit Agreement to fund their working capital needs, to fund capital expenditures, to issue letters of credit and for other general partnership purposes. The Credit Agreement also includes a $10.0 million letter of credit sublimit. The commitment under the Credit Facility may be increased by up to $15.0 million upon the Borrowers’ request at the discretion of the lenders and subject to certain customary requirements.
	On March 7, 2014 the Borrowers entered into the First Amendment to the Credit Agreement (the “First Amendment”). In certain circumstances the First Amendment replaces the financial test that the Partnership must satisfy for any borrowing from the Secured Leverage Ratio to a Fixed Charge Coverage Ratio (each as defined in the Credit Agreement) for the period from the date of the amendment until immediately prior to the time the Partnership reports its fiscal year 2014 annual results (the “FCCR End Date”). The Fixed Charge Coverage Ratio that the Partnership has to meet from the date of the First Amendment through the date immediately prior to reporting the Partnership’s 2014 first quarter results is 2.00 to 1.00, and thereafter through the FCCR End Date is 2.25 to 1.00. For the twelve months ended March 31, 2014, the Partnership’s Fixed Charge Coverage Ratio was 2.84 to 1.00.
	The First Amendment also modifies for a specified period the financial test applicable to the announcement or payment of a distribution. In the event that the Partnership has no amounts outstanding under the Credit Agreement on the date of the announcement or payment of a distribution, the minimum Fixed Charge Coverage Ratio that it has to meet in order to pay distributions in the period from the date of the First Amendment through the date immediately prior to reporting the Partnership’s 2014 first quarter results is 2.00 to 1.00, and thereafter through the FCCR End Date is 2.25 to 1.00. If there is any amount outstanding under the Credit Agreement on the date of the announcement or payment of a distribution from the period beginning with the date of the First Amendment through the FCCR End Date, the Partnership must have a Secured Leverage Ratio not in excess of 3.75 to 1.00. Following the FCCR End Date, to announce or pay a distribution the Partnership must have a Secured Leverage Ratio not in excess of 3.75 to 1.00. In addition, before the Partnership can make distributions, the Partnership must have at least $8.75 million available to be drawn under the Credit Agreement on a pro forma basis.
	As of March 31, 2014 and December 31, 2013, the Partnership had no outstanding borrowings under the Credit Agreement, and it was in compliance with all covenants under the Credit Agreement.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2014
Commitments And Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Note 6 — Commitments and Contingencies
	Natural Gas Forward Purchase Contracts
	The Partnership’s policy and practice are to enter into fixed-price forward purchase contracts for natural gas in conjunction with contracted nitrogen fertilizer product sales in order to substantially fix gross margin on those product sales contracts. The Partnership may also enter into a limited amount of additional fixed-price forward purchase contracts for natural gas in order to minimize monthly and seasonal gas price volatility. The Partnership occasionally enters into index-price contracts for the purchase of natural gas. The Partnership has entered into multiple natural gas forward purchase contracts for various delivery dates through April 30, 2014. Commitments for natural gas purchases consist of the following:
		As of
		March 31,		December 31,
		2014		2013
		(in thousands, except weighted
		average rate)
	MMBtus under fixed-price contracts		480		2,071
	MMBtus under index-price contracts		—		81
	Total MMBtus under contracts		480		2,152
	Commitments to purchase natural gas	$	2,283	$	8,571
	Weighted average rate per MMBtu based on the fixed rates and the indexes applicable to each contract	$	4.76	$	3.98
	Subsequent to March 31, 2014 through April 30, 2014, the Partnership entered into additional fixed-quantity forward purchase contracts at fixed and indexed prices for various delivery dates through May 31, 2014. The total MMBtus associated with these additional forward purchase contracts are approximately 0.7 million and the total amount of the purchase commitments are approximately $3.1 million, resulting in a weighted average rate per MMBtu of approximately $4.74 in these new commitments. The Partnership is required to make additional prepayments under these forward purchase contracts in the event that market prices fall below the purchase prices in the contracts.
	Contractual Obligations
	On April 17, 2013, the Partnership entered into an engineering, procurement and construction contract (the “EPC Contract”) with Abeinsa Abener Teyma General Partnership (“Abeinsa”). The EPC Contract provides for Abeinsa to be the contractor on the Partnership’s power generation project at the Pasadena Facility. The value of the contract is approximately $25.0 million and the project is expected to be completed by late 2014. As of March 31, 2014, the Partnership has paid approximately $15.7 million and accrued an additional $0.8 million under the EPC contract.
	Litigation
	The Partnership is party to litigation from time to time in the normal course of business. The Partnership accrues legal liabilities only when it concludes that it is probable that it has an obligation for such costs and can reasonably estimate the amount of such costs. In cases where the Partnership determines that it is not probable, but reasonably possible that it has a material obligation, it discloses such obligations and the possible loss or range of loss, if such estimate can be made. While the outcome of the Partnership’s current matters are not estimable or probable, the Partnership maintains insurance to cover certain actions and believes that resolution of its current litigation matters will not have a material adverse effect on the Partnership’s financial statements.
	Regulation
	The Partnership’s business is subject to extensive and frequently changing federal, state and local, environmental, health and safety regulations governing a wide range of matters, including the emission of air pollutants, the release of hazardous substances into the environment, the treatment and discharge of waste water and the storage, handling, use and transportation of the Partnership’s fertilizer products, raw materials, and other substances that are part of our operations. These laws include the Clean Air Act (the “CAA”), the federal Water Pollution Control Act, the Resource Conservation and Recovery Act, the Comprehensive Environmental Response, Compensation and Liability Act, the Toxic Substances Control Act, and various other federal, state and local laws and regulations. The laws and regulations to which the Partnership is subject are complex, change frequently and have tended to become more stringent over time. The ultimate impact on the Partnership’s business of complying with existing laws and regulations is not always clearly known or determinable due in part to the fact that the Partnership’s operations may change over time and certain implementing regulations for laws, such as the CAA, have not yet been finalized, are under governmental or judicial review or are being revised. These laws and regulations could result in increased capital, operating and compliance costs.
	The Partnership entered into a settlement agreement with the Illinois Environmental Protection Agency in August 2013 requiring it to connect a device at the East Dubuque Facility to an ammonia safety flare by December 1, 2015. The Partnership estimates the cost of the project required by the settlement agreement as being approximately $300,000.

Partners_Capital_and_Partnersh

Partners' Capital and Partnership Distributions	3 Months Ended
	Mar. 31, 2014
Equity [Abstract]	'
Partners' Capital and Partnership Distributions	'
	Note 7 — Partners’ Capital and Partnership Distributions
	The Partnership’s policy is to distribute all of the cash available for distribution which it generates each quarter. Cash available for distribution for each quarter will be determined by the board of directors (the “Board”) of the Partnership’s general partner (the “General Partner”) following the end of each quarter. The Partnership expects that cash available for distribution for each quarter will generally be calculated as the cash it generates during the quarter, less cash needed for maintenance capital expenditures not funded by capital proceeds, debt service and other contractual obligations, and reserves for future operating or capital needs that the Board of the General Partner deems necessary or appropriate. The Partnership does not intend to maintain excess distribution coverage for the purpose of maintaining stability or growth in its quarterly distribution or otherwise to reserve cash for distributions, nor does it intend to incur debt to pay quarterly distributions. The Partnership has no legal obligation to pay distributions. Distributions are not required by the Partnership’s partnership agreement and the Partnership’s distribution policy is subject to change at any time at the discretion of the Board of the General Partner. Any distributions made by the Partnership to its unitholders will be done on a pro rata basis. At March 31, 2014, the Partnership had outstanding 192,500 unit-settled phantom units. Each phantom unit entitles the holder to payments in amounts equal to the amounts of any distributions made to an outstanding unit by the Partnership. Payments to outstanding phantom units are not subtracted from operating cash flow in the calculation of cash available for distribution, but the payments made to phantom unitholders are recorded as distributions for accounting purposes. For information on the announcement of cash distributions refer to Note 12 — Subsequent Events.
	The following is a summary of cash distributions paid to common unitholders and holders of phantom units during the three months ended March 31, 2014 for the respective quarter to which the distributions relate:
		December 31,		Total Cash
		2013		Distributions
				Paid in 2014
		(in thousands, except for per
		unit amounts)
	Distribution to common unitholders — affiliates	$	1,162	$	1,162
	Distribution to common unitholders — non-affiliates		792		792
	Total amount paid	$	1,954	$	1,954
	Per common unit	$	0.05	$	0.05
	Common and phantom units outstanding		39,081

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Note 8 — Income Taxes
	The Partnership and its subsidiaries are not directly subject to federal and state income taxes. Instead, their taxable income or loss is allocated to their individual partners or members. However, the Partnership and its subsidiaries are subject to Illinois replacement tax, Texas margin tax and California annual minimum franchise tax. For the three months ended March 31, 2014, Illinois replacement tax and Texas margin tax of approximately $3,000 and $27,000, respectively, were recorded.

Segment_Information

Segment Information	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Segment Information	'
	Note 9 — Segment Information
	The Partnership operates in two business segments, as described below:
		•		East Dubuque – The operations of the East Dubuque Facility, which produces primarily ammonia and urea ammonium nitrate solution (“UAN”).
		•		Pasadena – The operations of the Pasadena Facility, which produces primarily ammonium sulfate.
	The Partnership’s reportable operating segments have been determined in accordance with the Partnership’s internal management structure, which is organized based on operating activities. The Partnership evaluates performance based upon several factors, of which the primary financial measure is segment-operating income.
			For the Three Months Ended
			March 31,
			2014			2013
			(in thousands)
	Revenues
	East Dubuque		$	28,491		$	34,549
	Pasadena			27,789			25,015
	Total revenues		$	56,280		$	59,564
	Operating income (loss)
	East Dubuque		$	11,234		$	17,313
	Pasadena			(759	)		1,856
	Total segment operating income		$	10,475		$	19,169
	Net income (loss)
	East Dubuque		$	11,209		$	17,270
	Pasadena			(786	)		1,816
	Total segment net income		$	10,423		$	19,086
	Reconciliation of segment net income to consolidated net income:
	Segment net income		$	10,423		$	19,086
	Partnership and unallocated expenses recorded as selling, general and administrative expenses			(2,316	)		(2,154	)
	Partnership and unallocated expenses recorded as other expense			—			(212	)
	Unallocated interest expense and loss on interest rate swaps			(4,982	)		(1,711	)
	Consolidated net income		$	3,125		$	15,009
			As of			As of
			March 31,			December 31,
			2014			2013
			(in thousands)
	Total assets
	East Dubuque		$	193,843		$	175,430
	Pasadena			204,659			188,836
	Total segment assets		$	398,502		$	364,266
	Reconciliation of segment total assets to consolidated total assets:
	Segment total assets		$	398,502		$	364,266
	Partnership and other			44,233			42,078
	Consolidated total assets		$	442,735		$	406,344

Net_Income_Per_Common_Unit

Net Income Per Common Unit	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Net Income Per Common Unit	'
	Note 10 — Net Income Per Common Unit
	The Partnership’s net income is allocated wholly to the common unitholders since the General Partner has a non-economic interest.
	Basic income per common unit is calculated by dividing net income by the weighted average number of common units outstanding for the period. Diluted net income per common unit is calculated by dividing net income by the weighted average number of common units outstanding plus the dilutive effect, calculated using the “treasury stock” method for the unvested phantom units. Phantom units are settled for common units upon vesting and are issued in tandem with distribution rights during the vesting period.
	The following table sets forth the computation of basic and diluted net income per common unit (in thousands, except for per unit data).
		For the Three Months Ended
		March 31,
		2014		2013
	Numerator:
	Net income	$	3,125	$	15,009
	Less: Income allocated to unvested units		15		117
	Net income allocated to common unitholders	$	3,110	$	14,892
	Denominator:
	Weighted average common units outstanding		38,889		38,839
	Effect of dilutive units:
	Phantom units		47		52
	Diluted units outstanding		38,936		38,891
	Basic net income per common unit	$	0.08	$	0.38
	Diluted net income per common unit	$	0.08	$	0.38
	For the three months ended March 31, 2014 and 2013, no phantom units were excluded from the calculation of diluted net income per common unit because their inclusion would have been anti-dilutive.

Related_Parties

Related Parties	3 Months Ended
	Mar. 31, 2014
Related Party Transactions [Abstract]	'
Related Parties	'
	Note 11 — Related Parties
	The Partnership, the General Partner and Rentech, Inc. (“Rentech”) have entered into a services agreement, pursuant to which the Partnership and the General Partner obtain certain management and other services from Rentech. Under the services agreement, the Partnership, its subsidiaries and the General Partner are obligated to reimburse Rentech for (i) all costs, excluding share-based compensation, incurred by Rentech or its affiliates in connection with the employment of its employees who are seconded to the Partnership and who provide the Partnership services under the agreement on a full-time basis; (ii) a prorated share of costs, excluding share-based compensation, incurred by Rentech or its affiliates in connection with the employment of its employees, excluding seconded personnel, who provide the Partnership services under the agreement on a part-time basis, with such prorated share determined by Rentech on a commercially reasonable basis, based on the estimated percent of total working time that such personnel are engaged in performing services for the Partnership; (iii) a prorated share of certain administrative costs, in accordance with the agreement, including office costs, services by outside vendors, other general and administrative costs; and (iv) any taxes (other than income taxes, gross receipt taxes and similar taxes) incurred by Rentech or its affiliates for the services provided under the agreement. During the three months ended March 31, 2014 and 2013, Rentech, in accordance with the services agreement, billed the Partnership approximately $2.6 million and $4.0 million, respectively.

Subsequent_Events

Subsequent Events	3 Months Ended
	Mar. 31, 2014
Subsequent Events [Abstract]	'
Subsequent Events	'
	Note 12 — Subsequent Events
	On May 6, 2014, the Board of the General Partner declared a cash distribution to its common unitholders for the period January 1, 2014 through and including March 31, 2014 of $0.08 per unit, which will result in total distributions in the amount of approximately $3.1 million, including payments to phantom unitholders. The cash distribution will be paid on May 30, 2014 to unitholders of record at the close of business on May 23, 2014.

Basis_of_Presentation_Policies

Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2014
Accounting Policies [Abstract]	'
Goodwill	'
	Goodwill
	Goodwill represents the excess of the purchase price over the fair value of identifiable net assets acquired in a business acquisition. The Partnership tests goodwill for impairment annually, or more often if an event or circumstance indicates that an impairment may have occurred. The analysis of the potential impairment of goodwill is a two step process. Step one of the impairment test consists of comparing the fair value of the reporting unit with the aggregate carrying value, including goodwill. If the carrying value of a reporting unit exceeds the reporting unit’s fair value, step two must be performed to determine the amount, if any, of the goodwill impairment.
	There are significant assumptions involved in performing a goodwill impairment test, which include discount rates, terminal growth rates, future prices of end products and raw materials, terminal values and production volumes. The various valuation methods used (income approach, replacement cost and market approach) are also weighted in determining fair market value. Changes to any of these assumptions could increase or decrease the fair value of the Pasadena reporting unit. The Partnership does not believe any impairment is required at March 31, 2014.

Fair_Value_Tables

Fair Value (Tables)	3 Months Ended
	Mar. 31, 2014
Derivative Instruments And Hedging Activities Disclosure [Abstract]	'
Fair Value Disclosure	'
	The following table presents the financial instruments that require fair value disclosure as of March 31, 2014.
		Fair Value						Carrying Value
		(in thousands)
		Level 1		Level 2		Level 3
	Liabilities
	Notes	$	315,802	$	—	$	—	$	320,000
	The following table presents the financial instruments that require fair value disclosure as of December 31, 2013.
		Fair Value						Carrying Value
		(in thousands)
		Level 1		Level 2		Level 3
	Liabilities
	Notes	$	318,400	$	—	$	—	$	320,000

Inventories_Tables

Inventories (Tables)	3 Months Ended
	Mar. 31, 2014
Inventory Disclosure [Abstract]	'
Inventories	'
	Inventories consisted of the following:
		As of
		March 31,		December 31,
		2014		2013
		(in thousands)
	Finished goods	$	48,074	$	26,690
	Raw materials		3,189		4,193
	Other		255		219
	Total inventory	$	51,518	$	31,102

Property_Plant_and_Equipment_T

Property, Plant and Equipment (Tables)	3 Months Ended
	Mar. 31, 2014
Property Plant And Equipment [Abstract]	'
Summary of Property, Plant and Equipment	'
	Property, plant and equipment consisted of the following:
		As of
		March 31,			December 31,
		2014			2013
		(in thousands)
	Land and land improvements	$	22,569		$	22,540
	Buildings and building improvements		28,430			27,307
	Machinery and equipment and catalysts		256,417			246,963
	Furniture, fixtures and office equipment		300			258
	Computer equipment and computer software		3,833			3,759
	Vehicles		186			186
	Other		210			210
			311,945			301,223
	Less: accumulated depreciation		(72,346	)		(66,864	)
	Total property, plant and equipment, net	$	239,599		$	234,359

Commitments_and_Contingencies_

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2014
Commitments And Contingencies Disclosure [Abstract]	'
Summary of Commitments to Purchase Natural Gas	'
	Commitments for natural gas purchases consist of the following:
		As of
		March 31,		December 31,
		2014		2013
		(in thousands, except weighted
		average rate)
	MMBtus under fixed-price contracts		480		2,071
	MMBtus under index-price contracts		—		81
	Total MMBtus under contracts		480		2,152
	Commitments to purchase natural gas	$	2,283	$	8,571
	Weighted average rate per MMBtu based on the fixed rates and the indexes applicable to each contract	$	4.76	$	3.98

Partners_Capital_and_Partnersh1

Partners' Capital and Partnership Distributions (Tables)	3 Months Ended
	Mar. 31, 2014
Equity [Abstract]	'
Schedule of Cash Distributions Made to Partners by Distribution	'
	The following is a summary of cash distributions paid to common unitholders and holders of phantom units during the three months ended March 31, 2014 for the respective quarter to which the distributions relate:
		December 31,		Total Cash
		2013		Distributions
				Paid in 2014
		(in thousands, except for per
		unit amounts)
	Distribution to common unitholders — affiliates	$	1,162	$	1,162
	Distribution to common unitholders — non-affiliates		792		792
	Total amount paid	$	1,954	$	1,954
	Per common unit	$	0.05	$	0.05
	Common and phantom units outstanding		39,081

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2014
Segment Reporting [Abstract]	'
Evaluation of Performance Based on Several Factors	'
	The Partnership evaluates performance based upon several factors, of which the primary financial measure is segment-operating income.
		For the Three Months Ended
		March 31,
		2014			2013
		(in thousands)
	Revenues
	East Dubuque	$	28,491		$	34,549
	Pasadena		27,789			25,015
	Total revenues	$	56,280		$	59,564
	Operating income (loss)
	East Dubuque	$	11,234		$	17,313
	Pasadena		(759	)		1,856
	Total segment operating income	$	10,475		$	19,169
	Net income (loss)
	East Dubuque	$	11,209		$	17,270
	Pasadena		(786	)		1,816
	Total segment net income	$	10,423		$	19,086
	Reconciliation of segment net income to consolidated net income:
	Segment net income	$	10,423		$	19,086
	Partnership and unallocated expenses recorded as selling, general and administrative expenses		(2,316	)		(2,154	)
	Partnership and unallocated expenses recorded as other expense		—			(212	)
	Unallocated interest expense and loss on interest rate swaps		(4,982	)		(1,711	)
	Consolidated net income	$	3,125		$	15,009
		As of			As of
		March 31,			December 31,
		2014			2013
		(in thousands)
	Total assets
	East Dubuque	$	193,843		$	175,430
	Pasadena		204,659			188,836
	Total segment assets	$	398,502		$	364,266
	Reconciliation of segment total assets to consolidated total assets:
	Segment total assets	$	398,502		$	364,266
	Partnership and other		44,233			42,078
	Consolidated total assets	$	442,735		$	406,344

Net_Income_Per_Common_Unit_Tab

Net Income Per Common Unit (Tables)	3 Months Ended
	Mar. 31, 2014
Earnings Per Share [Abstract]	'
Basic and Diluted Net Income Per Common Unit	'
	The following table sets forth the computation of basic and diluted net income per common unit (in thousands, except for per unit data).
		For the Three Months Ended
		March 31,
		2014		2013
	Numerator:
	Net income	$	3,125	$	15,009
	Less: Income allocated to unvested units		15		117
	Net income allocated to common unitholders	$	3,110	$	14,892
	Denominator:
	Weighted average common units outstanding		38,889		38,839
	Effect of dilutive units:
	Phantom units		47		52
	Diluted units outstanding		38,936		38,891
	Basic net income per common unit	$	0.08	$	0.38
	Diluted net income per common unit	$	0.08	$	0.38

Fair_Value_Fair_Value_Disclosu

Fair Value - Fair Value Disclosure (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Carrying Value [Member]	'	'
Liabilities	'	'
Notes	$320,000	$320,000
Level 1 [Member]	'	'
Liabilities	'	'
Notes	315,802	318,400
Level 2 [Member]	'	'
Liabilities	'	'
Notes	'	'
Level 3 [Member]	'	'
Liabilities	'	'
Notes	'	'

Fair_Value_Additional_Informat

Fair Value - Additional Information (Detail) (Level 1 [Member], USD $)	Mar. 31, 2014
In Millions, unless otherwise specified
Level 1 [Member]	'
Fair Value Inputs, Liabilities, Quantitative Information [Line Items]	'
Senior secured notes interest percentage	6.50%
Senior secured notes issued	$320

Inventories_Inventories_Detail

Inventories - Inventories (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Finished goods	$48,074	$26,690
Raw materials	3,189	4,193
Other	255	219
Total inventory	$51,518	$31,102

Inventories_Additional_Informa

Inventories - Additional Information (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2013
Inventory [Line Items]	'
Write down Inventory	$545
Pasadena [Member]	'
Inventory [Line Items]	'
Write down Inventory	$500

Property_Plant_and_Equipment_S

Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	$311,945	$301,223
Less: accumulated depreciation	-72,346	-66,864
Total property, plant and equipment, net	239,599	234,359
Land and Land Improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	22,569	22,540
Building and Building Improvements [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	28,430	27,307
Machinery Equipment and Catalysts [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	256,417	246,963
Furniture, Fixtures and Office Equipment [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	300	258
Computers Equipment And Software [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	3,833	3,759
Vehicles [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	186	186
Property, Plant and Equipment, Other Types [Member]	'	'
Property, Plant and Equipment [Line Items]	'	'
Property and equipment, gross	$210	$210

Property_Plant_and_Equipment_A

Property, Plant and Equipment - Additional Information (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Property Plant And Equipment Useful Life And Values [Abstract]	'	'
Construction in progress	$32,937,000	$33,531,000
Capitalized interest costs	$1,200,000	'

Debt_Additional_Information_De

Debt - Additional Information (Detail) (USD $)	Mar. 31, 2014	Dec. 31, 2013	Apr. 12, 2013	Mar. 07, 2014	Mar. 31, 2014	Apr. 12, 2013	Mar. 07, 2014
				2013 Credit Agreement [Member]	2013 Credit Agreement [Member]	2013 Credit Agreement [Member]	2013 Credit Agreement [Member]
							Minimum [Member]
Debt Instrument [Line Items]	'	'	'	'	'	'	'
Multiple draw term loan	'	'	'	'	'	$35,000,000	'
Amount of letter of credit sublimit	'	'	'	'	'	10,000,000	'
Line of credit facility expected increase in borrowing capacity maximum	'	'	15,000,000	'	'	'	'
Fixed charge coverage ratio after first amendment	'	'	'	2	'	'	'
Fixed charge coverage ratio end date	'	'	'	2.25	'	'	'
Partnership's fixed charge coverage ratio	'	'	'	'	2.84	'	'
Maximum secured leverage ratio	'	'	'	3.75	'	'	'
Maximum secured leverage ratio following the FCCR end date	'	'	'	3.75	'	'	'
Amount available under credit agreement before Partnership make distributions	'	'	'	'	'	'	8,750,000
Outstanding borrowings under credit agreement	$0	$0	'	'	'	'	'

Commitments_and_Contingencies_1

Commitments and Contingencies - Summary of Commitments to Purchase Natural Gas (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
	MMBTU	MMBTU
Oil and Gas Delivery Commitments and Contracts [Line Items]	'	'
Total MMBtus associated with additional forward purchase contracts	480,000	2,152,000
Commitments to purchase natural gas	$2,283	$8,571
Weighted average rate per MMBtu	4.76	3.98
MMBtus Under Fixed-Price Contracts [Member]	'	'
Oil and Gas Delivery Commitments and Contracts [Line Items]	'	'
Total MMBtus associated with additional forward purchase contracts	480,000	2,071,000
MMBtus Under Index-Price Contracts [Member]	'	'
Oil and Gas Delivery Commitments and Contracts [Line Items]	'	'
Total MMBtus associated with additional forward purchase contracts	'	81,000

Commitments_and_Contingencies_2

Commitments and Contingencies - Additional Information (Detail) (USD $)	3 Months Ended	12 Months Ended			1 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Aug. 31, 2013	Apr. 17, 2013	Apr. 30, 2014	Apr. 30, 2014
	MMBTU	MMBTU			Subsequent Event [Member]	Fixed Quantity Forward Purchase Contracts [Member]
						Subsequent Event [Member]
						MMBTU
Subsequent Event [Line Items]	'	'	'	'	'	'
Total MMBtus associated with additional forward purchase contracts	480,000	2,152,000	'	'	'	700,000
Purchase commitments	'	'	'	'	$3,100,000	'
Weighted average rate per MMBtu	4.76	3.98	'	'	'	4.74
Engineering, Procurement and Construction Contract value	'	'	'	25,000,000	'	'
Payment of contractual obligation	15,700,000	'	'	'	'	'
Accrued contractual obligation	800,000	'	'	'	'	'
Cost of Project Under Settlement Agreement With Environmental Protection Agency	'	'	$300,000	'	'	'
Estimated Time of Installation of Ammonia Safety Flare	1-Dec-15	'	'	'	'	'

Partners_Capital_and_Partnersh2

Partners' Capital and Partnership Distributions - Additional Information (Detail) (Phantom Share Units (PSUs) [Member])	Mar. 31, 2014
Phantom Share Units (PSUs) [Member]	'
Partnership Equity And Distribution [Line Items]	'
Settled phantom units	192,500

Partners_Capital_and_Partnersh3

Partners' Capital and Partnership Distributions - Schedule of Cash Distributions Made to Partners by Distribution (Detail) (USD $)	3 Months Ended	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Distribution Made to Limited Partner [Line Items]	'	'
Distribution to common unitholders	$1,954	$1,954
Per common unit	$0.05	$0.05
Common and phantom units outstanding	'	39,081
Affiliated Entity [Member]	'	'
Distribution Made to Limited Partner [Line Items]	'	'
Distribution to common unitholders	1,162	1,162
Non Affiliated Entity [Member]	'	'
Distribution Made to Limited Partner [Line Items]	'	'
Distribution to common unitholders	$792	$792

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014
Illinois [Member]	'
Income Tax Examination [Line Items]	'
State income tax provision	$3,000
Texas [Member]	'
Income Tax Examination [Line Items]	'
State income tax provision	$27,000

Segment_Information_Additional

Segment Information - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2014
	Segment
Segment Reporting [Abstract]	'
Number of operating segments	2

Segment_Information_Evaluation

Segment Information - Evaluation of Performance Based on Several Factors (Detail) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Revenues	'	'	'
Total revenues	$56,280	$59,564	'
Operating income (loss)	'	'	'
Operating income (loss)	8,159	17,015	'
Net income (loss)	'	'	'
Net income (loss)	3,125	15,009	'
Reconciliation of segment net income to consolidated net income:	'	'	'
Net income (loss)	3,125	15,009	'
Total selling, general and administrative expense	-5,278	-4,741	'
Other expense	-6	15	'
Interest expense	-5,004	-1,803	'
Net income	3,125	15,009	'
Total assets	'	'	'
Total assets	442,735	406,344	406,344
Reconciliation of segment total assets to consolidated total assets:	'	'	'
Partnership and other	44,233	42,078	'
Total assets	442,735	406,344	406,344
Segment net income [Member]	'	'	'
Revenues	'	'	'
Total revenues	56,280	59,564	'
Operating income (loss)	'	'	'
Operating income (loss)	10,475	19,169	'
Net income (loss)	'	'	'
Net income (loss)	10,423	19,086	'
Reconciliation of segment net income to consolidated net income:	'	'	'
Net income (loss)	10,423	19,086	'
Net income	10,423	19,086	'
East Dubuque [Member]	'	'	'
Total assets	'	'	'
Total assets	193,843	175,430	'
Reconciliation of segment total assets to consolidated total assets:	'	'	'
Total assets	193,843	175,430	'
East Dubuque [Member] | Operating Segments [Member]	'	'	'
Revenues	'	'	'
Total revenues	28,491	34,549	'
Operating income (loss)	'	'	'
Operating income (loss)	11,234	17,313	'
Net income (loss)	'	'	'
Net income (loss)	11,209	17,270	'
Reconciliation of segment net income to consolidated net income:	'	'	'
Net income (loss)	11,209	17,270	'
Net income	11,209	17,270	'
Pasadena [Member]	'	'	'
Total assets	'	'	'
Total assets	204,659	188,836	'
Reconciliation of segment total assets to consolidated total assets:	'	'	'
Total assets	204,659	188,836	'
Pasadena [Member] | Operating Segments [Member]	'	'	'
Revenues	'	'	'
Total revenues	27,789	25,015	'
Operating income (loss)	'	'	'
Operating income (loss)	-759	1,856	'
Net income (loss)	'	'	'
Net income (loss)	-786	1,816	'
Reconciliation of segment net income to consolidated net income:	'	'	'
Net income (loss)	-786	1,816	'
Net income	-786	1,816	'
Reportable Segments [Member]	'	'	'
Total assets	'	'	'
Total assets	398,502	364,266	'
Reconciliation of segment total assets to consolidated total assets:	'	'	'
Total assets	398,502	364,266	'
Corporate Segment [Member]	'	'	'
Reconciliation of segment net income to consolidated net income:	'	'	'
Total selling, general and administrative expense	-2,316	-2,154	'
Other expense	'	-212	'
Interest expense	($4,982)	($1,711)	'

Net_Income_Per_Common_Unit_Bas

Net Income Per Common Unit - Basic and Diluted Net Income Per Common Unit (Detail) (USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Numerator:	'	'
Net income	$3,125	$15,009
Less: Income allocated to unvested units	15	117
Net income allocated to common unitholders	$3,110	$14,892
Denominator:	'	'
Weighted average common units outstanding	38,889	38,839
Effect of dilutive units:	'	'
Phantom units	47	52
Diluted units outstanding	38,936	38,891
Basic net income per common unit	$0.08	$0.38
Diluted net income per common unit	$0.08	$0.38

Net_Income_Per_Common_Unit_Add

Net Income Per Common Unit - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Earnings Per Share [Abstract]	'	'
Phantom units excluded from calculation of diluted net income per common unit	0	0

Related_Parties_Additional_Inf

Related Parties - Additional Information (Detail) (Partnership [Member], USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Partnership [Member]	'	'
Related Party Transaction [Line Items]	'	'
Partnership billed related to services agreement	$2.60	$4

Subsequent_Events_Additional_I

Subsequent Events - Additional Information (Detail) (Subsequent Event [Member], USD $)	0 Months Ended
In Millions, except Per Share data, unless otherwise specified	6-May-14
Subsequent Event [Member]	'
Subsequent Event [Line Items]	'
Date of declaration for distribution of cash to partnership's common unitholders	6-May-14
Cash distribution per unit declared to the partnership's common unitholders	$0.08
Total distributions to partnership's common unitholders	$3.10
Date of distribution for distribution of cash to partnership's common unitholders	30-May-14
Limited partner distribution record date	23-May-14