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Revenue Recognition
 3 Months Ended
Mar. 31, 2022
Revenue Recognition [Abstract]  
Revenue Recognition Revenue Recognition
Revenue from Contracts with Customers
The following tables reflect the disaggregation of our revenues by major category for the three months ended March 31, 2022 and 2021, respectively:
Three Months Ended
March 31, 2022
Offshore Pipeline TransportationSodium Minerals & Sulfur ServicesMarine TransportationOnshore Facilities and TransportationConsolidated
Fee-based revenues$68,068 $— $55,774 $13,631 $137,473 
Product Sales— 258,775 — 208,800 467,575 
Refinery Services— 26,899 — — 26,899 
$68,068 $285,674 $55,774 $222,431 $631,947 
Three Months Ended
March 31, 2021
Offshore Pipeline TransportationSodium Minerals & Sulfur ServicesMarine TransportationOnshore Facilities and TransportationConsolidated
Fee-based revenues$64,384 $— $40,331 $24,394 $129,109 
Product Sales— 204,778 — 164,823 369,601 
Refinery Services— 22,509 — — 22,509 
$64,384 $227,287 $40,331 $189,217 $521,219 
The Company recognizes revenue upon the satisfaction of its performance obligations under its contracts. The timing of revenue recognition varies for our different revenue streams. In general, the timing includes recognition of revenue over time as services are being performed as well as recognition of revenue at a point in time for delivery of products.

Contract Assets and Liabilities
The table below depicts our contract asset and liability balances at December 31, 2021 and March 31, 2022:
Contract AssetsContract Liabilities
Current Assets- OtherAccrued LiabilitiesOther Long-Term Liabilities
Balance at December 31, 2021$13,563 $2,619 $19,028 
Balance at March 31, 20224,687 2,415 18,498 
Transaction Price Allocations to Remaining Performance Obligations
We are required to disclose the amount of our transaction prices that are allocated to unsatisfied performance obligations as of March 31, 2022. We are exempt from disclosing performance obligations with a duration of one year or less, revenue recognized related to performance obligations where the consideration corresponds directly with the value provided to customers and contracts with variable consideration that is allocated wholly to an unsatisfied performance obligation or promise to transfer a good or service that is part of a series in accordance with ASC 606.
The majority of our contracts qualify for one of these expedients or exemptions. For the remaining contract types that involve revenue recognition over a long-term period with long-term fixed consideration (adjusted for indexing as required), we determined our allocations of transaction price that relate to unsatisfied performance obligations. For our tiered pricing offshore transportation contracts, we provide firm capacity for both fixed and variable consideration over a long term period. Therefore, we have allocated the remaining contract value to future periods.
    
The following chart depicts how we expect to recognize revenues for future periods related to these contracts:
Offshore Pipeline TransportationOnshore Facilities and Transportation
Remainder of 2022$55,635 $5,400 
202365,645 7,200 
202459,034 1,800 
202562,699 — 
202644,691 — 
Thereafter57,612 — 
Total$345,316 $14,400