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Goodwill and Other Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
Schedule of intangible assets |  |
Intangible assets, gross carrying amount | $ 387,298 | $ 387,332
Accumulated Amortization | (199,551) | (177,262)
Total acquired intangible assets, Net carrying amount | 187,747 | 210,070
Net Carrying Amount | 142,547 |
Trade names |  |
Schedule of intangible assets |  |
Indefinite lived intangible assets | 45,200 | 45,200
Facility management contracts |  |
Schedule of intangible assets |  |
Gross Carrying Amount | 308,398 | 308,432
Accumulated Amortization | (168,848) | (148,171)
Net Carrying Amount | $ 139,550 | 160,261
Amortization period | 16 years 3 months 18 days |
Technology |  |
Schedule of intangible assets |  |
Gross Carrying Amount | $ 33,700 | 33,700
Accumulated Amortization | (30,703) | (29,091)
Net Carrying Amount | $ 2,997 | $ 4,609
Amortization period | 7 years 3 months 18 days |

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