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Revenue
 12 Months Ended
Dec. 31, 2021
Revenue from Contract with Customer [Abstract]  
Revenue REVENUE
    The following table disaggregates our revenue by major source:
202120202019
Terminalling and storage segment
Lubricant product sales$103,809 $103,300 $122,257 
Throughput and storage75,223 80,864 87,397 
$179,032 $184,164 $209,654 
Transportation segment
Land transportation$111,611 $88,652 $98,895 
Inland transportation29,536 40,507 54,834 
Offshore transportation3,167 3,333 5,893 
$144,314 $132,492 $159,622 
Sulfur service segment
Sulfur product sales$32,416 $24,176 $30,135 
Fertilizer product sales100,827 72,172 69,771 
Sulfur services 11,799 11,659 11,434 
$145,042 $108,007 $111,340 
Natural gas liquids segment
Natural gas liquids product sales$414,043 $247,479 $366,502 
$414,043 $247,479 $366,502 

    Revenue is measured based on a consideration specified in a contract with a customer and excludes amounts collected on behalf of third parties where the Partnership is acting as an agent. The Partnership recognizes revenue when the Partnership satisfies a performance obligation, which typically occurs when the Partnership transfers control over a product to a customer or as the Partnership delivers a service.

    The following is a description of the principal activities - separated by reportable segments - from which the Partnership generates revenue.

Terminalling and Storage Segment

    Revenue is recognized for storage contracts based on the contracted monthly tank fixed fee.  For throughput contracts, revenue is recognized based on the volume moved through the Partnership’s terminals at the contracted rate.  For the Partnership’s tolling agreement, revenue is recognized based on the contracted monthly reservation fee and throughput volumes moved through the facility.  When lubricants and drilling fluids are sold by truck or rail, revenue is recognized when title is transferred, which is either upon delivering product to the customer or when the product leaves the Partnership's facility, depending on the specific terms of the contract. Delivery of product is invoiced as the transaction occurs and is generally paid within a month. Throughput and storage revenue in the table above includes non-cancelable revenue arrangements that are under the scope of ASC 842, whereby the Partnership has committed certain Terminalling and Storage assets in exchange for a minimum fee.

Natural Gas Liquids Segment

    NGL revenue is recognized when product is delivered by truck, rail, or pipeline to the Partnership's NGL customers. Revenue is recognized on title transfer of the product to the customer. Delivery of product is invoiced as the transaction occurs and is generally paid within a month.
Sulfur Services Segment

    Revenue from sulfur and fertilizer product sales is recognized when the customer takes title to the product.  Delivery of product is invoiced as the transaction occurs and is generally paid within a month. Revenue from sulfur services is recognized as services are performed during each monthly period. The performance of the service is invoiced as the transaction occurs and is generally paid within a month.

Transportation Segment

    Revenue related to land transportation is recognized for line hauls based on a mileage rate. For contracted trips, revenue is recognized upon completion of the particular trip. The performance of the service is invoiced as the transaction occurs and is generally paid within a month.

    Revenue related to marine transportation is recognized for time charters based on a per day rate. For contracted trips, revenue is recognized upon completion of the particular trip. The performance of the service is invoiced as the transaction occurs and is generally paid within a month.

    The table below includes estimated minimum revenue expected to be recognized in the future related to performance obligations that are unsatisfied at the end of the reporting period. The Partnership applies the practical expedient in ASC 606-10-50-14(a) and does not disclose information about remaining performance obligations that have original expected durations of one year or less.
20222023202420252026ThereafterTotal
Terminalling and storage
Throughput and storage$43,527 $42,041 $43,360 $44,661 $45,940 $251,349 $470,878 
Natural Gas Services
Natural Gas Liquids$6,047 $5,391 $5,406 $5,391 $3,131 $— $25,366 
Sulfur services
Sulfur product sales17,703 16,953 14,493 2,156 1,182 295 52,782 
Total$67,277 $64,385 $63,259 $52,208 $50,253 $251,644 $549,026