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Goodwill and Other Intangible Assets, Net (Intangible Assets) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017
Schedule of intangible assets |  |
Accumulated Amortization | $ (155,659) | $ (132,779)
Finite-lived intangible assets | 187,160 |
Intangible assets, gross carrying amount | 388,019 | 388,118
Total acquired intangible assets, Net carrying amount | 232,360 | 255,339
Trade names |  |
Schedule of intangible assets |  |
Indefinite lived intangible assets | $ 45,200 | 45,200
Facility management contracts |  |
Goodwill [Line Items] |  |
Amortization period | 16 years 3 months |
Schedule of intangible assets |  |
Gross Carrying Amount | $ 308,419 | 308,518
Accumulated Amortization | (127,481) | (106,724)
Finite-lived intangible assets | $ 180,938 | 201,794
Covenants not to compete |  |
Goodwill [Line Items] |  |
Amortization period | 1 year |
Schedule of intangible assets |  |
Gross Carrying Amount | $ 700 | 700
Accumulated Amortization | (700) | (517)
Finite-lived intangible assets | $ 0 | 183
Technology |  |
Goodwill [Line Items] |  |
Amortization period | 7 years 3 months |
Schedule of intangible assets |  |
Gross Carrying Amount | $ 33,700 | 33,700
Accumulated Amortization | (27,478) | (25,538)
Finite-lived intangible assets | $ 6,222 | $ 8,162

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