Fair Value Measurements	3 Months Ended
Mar. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 10. FAIR VALUE MEASUREMENTS We measure and report certain financial and non-financial assets and liabilities on a fair value basis. Fair value is 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 (exit price). U.S. GAAP specifies a three-level hierarchy that is used when measuring and disclosing fair value. The fair value hierarchy gives the highest priority to quoted prices available in active markets (i.e., observable inputs) and the lowest priority to data lacking transparency (i.e., unobservable inputs). An instrument’s categorization within the fair value hierarchy is based on the lowest level of significant input to its valuation. Transfers into or out of any hierarchy level are recognized at the end of the reporting period in which the transfers occurred. There were no transfers between any levels in 2021 or 2020. As further discussed in Note 7, we entered into interest rate swap contracts during 2020 and remeasure the fair value of such contracts on a recurring basis each balance sheet date. We used an income approach to measure the fair value of these contracts, utilizing a forward LIBOR yield curve for the same period as the future interest rate swap settlements. These fair value measurements are classified as Level 2. As further discussed in Note 11, we have accrued for unvested phantom units and phantom performance units as a liability and adjust that liability on a recurring basis based on the market price of our common units each balance sheet date. These fair value measurements are classified as Level 1. The fair value of our accounts receivable, notes receivable, and accounts payable approximated their carrying values as of March 31, 2021 and December 31, 2020 due to the short-term maturity of these instruments. The fair value of the revolving credit facility approximated its carrying values as of March 31, 2021 and December 31, 2020 due to the frequency with which interest rates are reset and the consistency of the market spread.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

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