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Restructuring Charges - Changes to accrued liability balance (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Changes to accrued liability balance related to restructuring |  |
Balance at beginning of period | $ 201 |
Restructuring charges | 2,903 | $ 8,450
Payments | (3,104) |
Balance at end of period |  | 201
Severance costs |  |
Changes to accrued liability balance related to restructuring |  |
Restructuring charges | 1,717 | 6,952
Pandemic Restructuring |  |
Restructuring charges |  |
Estimated additional charges | 0 |
Changes to accrued liability balance related to restructuring |  |
Balance at beginning of period | 201 |
Restructuring charges | 1,717 | 5,257
Payments | (1,918) |
Balance at end of period |  | 201
Pandemic Restructuring | Severance costs |  |
Restructuring charges |  |
Restructuring charges incurred to date | 7,000 |
Changes to accrued liability balance related to restructuring |  |
Restructuring charges | 1,717 | 5,257
2020 Property Restructuring |  |
Restructuring charges |  |
Restructuring charges incurred to date | 1,500 |
Estimated additional charges | 0 |
Changes to accrued liability balance related to restructuring |  |
Balance at beginning of period | 0 |
Restructuring charges | 35 | 1,498
Payments | (35) |
Balance at end of period |  | 0
Loss on sale |  | 915
Impairment loss |  | 583
2021 Property Restructuring |  |
Changes to accrued liability balance related to restructuring |  |
Balance at beginning of period | 0 |
Restructuring charges | 929 |
Payments | (929) |
Balance at end of period |  | 0
Other Restructuring |  |
Changes to accrued liability balance related to restructuring |  |
Balance at beginning of period | 0 |
Restructuring charges | 222 |
Payments | (222) |
Balance at end of period |  | 0
Organizational Restructuring |  |
Restructuring charges |  |
Estimated additional charges | $ 0 |
Changes to accrued liability balance related to restructuring |  |
Restructuring charges |  | 1,695
Organizational Restructuring | Severance costs |  |
Changes to accrued liability balance related to restructuring |  |
Restructuring charges |  | $ 1,695

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