Overview, Basis of Presentation and Significant Accounting Policies - Additional Information (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |||
---|---|---|---|---|---|
Jun. 30, 2021 |
Jun. 30, 2020 |
Jun. 30, 2021 |
Jun. 30, 2020 |
Dec. 31, 2020 |
|
Organization Consolidation And Presentation Of Financial Statements [Line Items] | |||||
Depreciation expense | $ 1.7 | $ 4.1 | $ 3.1 | $ 5.8 | |
Real Estate Held for sale | 5.5 | 5.5 | $ 5.5 | ||
Equity investments carrying value | 13.3 | 13.3 | $ 13.4 | ||
Unrealized loss on investment | 0.2 | ||||
Computer Software, Intangible Asset | |||||
Organization Consolidation And Presentation Of Financial Statements [Line Items] | |||||
Amortization expense related to internally-developed software | $ 8.1 | $ 7.3 | $ 16.3 | $ 14.6 | |
Maximum | Computer Software, Intangible Asset | |||||
Organization Consolidation And Presentation Of Financial Statements [Line Items] | |||||
Estimated useful life of computer software | 3 years |