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Income Taxes (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Operating Loss Carryforwards [Line Items] |  |  |
Income tax expense (benefit), CARES Act | $ 43,200 |  |
Permanent income tax expense (benefit), CARES Act | 9,600 |  |
Valuation allowance | 245,000 | $ 188,100 |
Tax positions related to prior years for settlement with tax authorities | 1,434 | 13,989 | $ 2,104
Decrease resulting from deferred tax assets |  |  | 11,400
Income tax penalties and interest accrued | 200 | 400 | $ 5,700
Unrecognized tax benefits that would impact effective tax rate | 1,700 |  |
Amount of possible decrease in unrecognized tax benefits in the next 12 months | $ 600 |  |
Cobe Tax Litigation |  |  |
Operating Loss Carryforwards [Line Items] |  |  |
Tax positions related to prior years for settlement with tax authorities |  | $ 13,300 |

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- Definition Effective Income Tax Rate Reconciliation, CARES Act, Amount + References No definition available. + Details
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- Definition Amount of decrease reasonably possible in the next twelve months for the unrecognized tax benefit. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(3) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32718-109319 + Details
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- Definition The portion of the valuation allowance pertaining to the deferred tax asset representing potential future taxable deductions from net operating loss carryforwards for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32718-109319 + Details
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