Supplemental Balance Sheet and Cash Flow Information - Changes in Operating Assets and Liabilities (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
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| Organization, Consolidation and Presentation of Financial Statements [Abstract] | |||
| Accounts receivable | $ (1,736) | $ 11,645 | $ (7,048) |
| Center operating supplies and inventories | (4,729) | 8,044 | (2,591) |
| Prepaid expenses and other current assets | (8,050) | 12,545 | 640 |
| Income tax receivable | 660 | 4,768 | 31,786 |
| Other assets | 2,363 | 6,010 | 1,537 |
| Accounts payable | 17,189 | 397 | (3,549) |
| Accrued expenses | 38,299 | (20,585) | 24,055 |
| Deferred revenue | (10,950) | (8,028) | (8,137) |
| Other liabilities | (6,329) | 22,721 | (134) |
| Changes in operating assets and liabilities | $ 26,717 | $ 37,517 | $ 36,559 |
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- Definition The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of increase (decrease) in deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The increase (decrease) during the reporting period in income taxes receivable, which represents the amount due from tax authorities for refunds of overpayments or recoveries of income taxes paid. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The increase (decrease) during the reporting period of all assets and liabilities used in operating activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of increase (decrease) in operating assets classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of increase (decrease) in operating liabilities classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of increase (decrease) in prepaid expenses, and assets classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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