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Goodwill and Other Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2021 | Dec. 31, 2020
Schedule of intangible assets |  |
Intangible assets, gross carrying amount | $ 387,324 | $ 387,298
Accumulated Amortization | (214,530) | (199,551)
Total acquired intangible assets, Net carrying amount | 172,794 | 187,747
Net Carrying Amount | 127,594 |
Trade names |  |
Schedule of intangible assets |  |
Indefinite lived intangible assets | 45,200 | 45,200
Facility management contracts |  |
Schedule of intangible assets |  |
Gross Carrying Amount | 308,424 | 308,398
Accumulated Amortization | (182,851) | (168,848)
Net Carrying Amount | $ 125,573 | 139,550
Amortization period | 16 years 3 months 18 days |
Technology |  |
Schedule of intangible assets |  |
Gross Carrying Amount | $ 33,700 | 33,700
Accumulated Amortization | (31,679) | (30,703)
Net Carrying Amount | $ 2,021 | $ 2,997
Amortization period | 7 years 3 months 18 days |

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