Fair Value Measurements	12 Months Ended
Fair Value Measurements	Dec. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The fair value of the Company's cash and cash equivalents, accounts receivable, net and short-term borrowings approximate their carrying values due to the short-term nature of the instruments. The fair value of the Company's notes receivable approximates the carrying amount of $11.5 million at December 31, 2020. The fair value and carrying amount of these notes was $15.7 million at December 31, 2019. The fair value of these notes is estimated using a discounted cash flow analysis in which the Company uses unobservable inputs such as market interest rates determined by the loan-to-value and market capitalization rates related to the underlying collateral at which management believes similar loans would be made and classified as a Level 3 measurement in the fair value hierarchy. At December 31, 2020, the carrying amount of the Company's notes payable and other debt was $687.1 million and the corresponding fair value was $704.1 million. At December 31, 2019, the carrying amount of the Company's notes payable and other debt was $704.6 million and the corresponding fair value was $727.3 million. The fair value of debt is calculated by discounting the future cash flows of the debt at rates based on instruments with similar risk, terms and maturities as compared to the Company's existing debt arrangements (Level 3). The Company records its interest rate swaps at fair value. The fair values of the Company's interest rate swaps (Level 2 measurements) are based on the estimated amounts that the Company would receive or pay to terminate the contracts at the reporting date and are determined using interest rate pricing models and interest rate related observable inputs (refer to Note 11 for fair value information regarding the Company's derivative instruments). During the years ended December 31, 2020, 2019 and 2018, the Company recorded aggregate impairment charges of $5.6 million, $49.7 million and $79.4 million related to goodwill and/or other long-lived assets. During the year ended December 31, 2018, the Company recorded an other-than-temporary-impairment charge of $188.6 million related to equity method investments (refer to Note 5). The Company has classified the fair value measurements as a Level 3 measurement in the fair value hierarchy because they involve significant unobservable inputs such as cash flow projections, discount rates and management assumptions.

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.