Fair Value Measurements	6 Months Ended
Fair Value Measurements	Jun. 30, 2022
Fair Value Disclosures [Abstract]
Fair Value Measurements	4. Fair Value Measurements Marketable Securities As of June 30, 2022 and December 31, 2021, marketable securities of $165.5 million and $182.4 million, respectively, are stated at fair value based on valuations provided by third-party pricing services and are classified within Level 2 of the valuation hierarchy. Debt The Company estimates the fair value of its debt using a discounted cash flow analysis based upon the Company's current borrowing rate for debt with similar maturities and collateral securing the indebtedness. The Company had outstanding long-term debt with a carrying amount of approximately $3.8 billion as of both June 30, 2022 and December 31, 2021. Fair value of the long-term debt is approximately $3.4 billion as of June 30, 2022 and approximates the carrying amount as of December 31, 2021. The Company's fair value of long-term debt disclosure is classified within Level 2 of the valuation hierarchy.

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.