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Income Taxes - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Tax carryforwards |  |  |  |  |  |
Net operating loss carryforwards, tax effected |  |  | $ 90,996 | $ 96,710 |  |
Effective tax rate | 19.50% | 23.90% | 28.00% | 7.90% | 18.30% |
Federal tax rate | 21.00% | 21.00% | 21.00% | 21.00% | 21.00% |
Tax adjustment relating to REIT |  |  | $ 8,203 | $ 60,378 | $ 40,577 |
Foreign tax rate differential provision (benefit) |  |  | 9,856 | 9,472 | 8,562 |
Foreign withholding taxes |  |  | 23,654 |  |  |
Increase in valuation allowance (net operating losses) |  |  | (8,406) | 8,337 | (6,211) |
Increase (decrease) in gross interest and penalties recorded |  |  | 823 | (1,499) | 1,780 |
Accrued interest and penalties recorded |  |  | 6,805 | 6,212 |  |
Unrecognized tax benefits |  |  | 27,772 | 25,969 | $ 35,068 | $ 35,320
Unrecognized tax benefits included in other long-term liabilities |  |  | 24,627 | 23,402 |  |
Deferred income taxes including unrecognized tax benefits |  |  | 3,145 | $ 2,567 |  |
Unrecognized tax benefits that would impact tax rate |  |  | 5,364 |  |  |
Foreign |  |  |  |  |  |
Tax carryforwards |  |  |  |  |  |
Net operating loss carryforwards, tax effected |  |  | $ 85,466 |  |  |
Net operating loss carryforwards subject to valuation allowance (as a percent) |  |  | 47.00% |  |  |

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- Definition Amount of current and deferred foreign income tax expense (benefit) attributable to income (loss) from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(h)(1)(Note 1)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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