Summary of Significant Accounting Policies (Details)	12 Months Ended
Dec. 31, 2017
Maximum
Property, Plant and Equipment
Turnaround period	5 years
Buildings \| Minimum
Property, Plant and Equipment
Depreciable life	10 years
Buildings \| Maximum
Property, Plant and Equipment
Depreciable life	40 years
Machinery and equipment \| Minimum
Property, Plant and Equipment
Depreciable life	3 years
Machinery and equipment \| Maximum
Property, Plant and Equipment
Depreciable life	30 years
Limited Partner [Member]
Property, Plant and Equipment
Ownership interest in the partnership (as a percent)	99.00%
General Partner's Interest
Property, Plant and Equipment
Ownership interest in the partnership (as a percent)	0.025%
Affiliate of General Partner \| Terra LP Holdings LLC [Member] \| Limited Partner [Member]
Property, Plant and Equipment
Ownership interest in the partnership (as a percent)	0.975%

Represents the period in which plant turnarounds are periodically performed to extend the useful life, increase output and/or efficiency and ensure the long-term reliability and safety of the integrated plant machinery at the entity's continuous process production facilities.

No definition available.

+ Details

Name:	tnh_PropertyPlantAndEquipmentTurnaroundPeriod
Namespace Prefix:	tnh_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055

+ Details

Name:	us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_MachineryAndEquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PartnerTypeOfPartnersCapitalAccountAxis=us-gaap_LimitedPartnerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_PartnerTypeOfPartnersCapitalAccountAxis=us-gaap_GeneralPartnerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConsolidatedEntitiesAxis=us-gaap_AffiliatedEntityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=tnh_TerraLPHoldingsLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: