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Discontinued Operations - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Mar. 31, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Jun. 30, 2020
Discontinued Operations And Disposal Groups [Abstract] |  |  |  |  |  |
Accelerated depreciation | $ 27,000 |  |  | $ 41,000 |  |
Accelerated amortization | 18,000 |  |  | 24,000 |  |
Reduction in cost of service revenue | 27,400 |  | $ 6,300 | 49,300 | $ 21,400 |
Amortization expenses | 23,000 |  |  | 30,200 |  |
Rental expenses | 5,000 |  |  | 15,600 |  |
Impairmrnt Charges | 0 | $ 46,400 |  |  |  |
Deferred costs |  |  |  |  |  | $ 1,000
Impairment of long-lived assets |  |  |  | 1,000 |  |
2020 |  |  |  |  |  | 28,800
2021 | 12,566 |  |  | 12,566 |  | 138,600
2022 | 11,278 |  |  | 11,278 |  | 118,500
2023 | 7,276 |  |  | 7,276 |  | 92,300
2024 | 5,521 |  |  | 5,521 |  | 59,400
Thereafter | $ 28,956 |  |  | $ 28,956 |  | $ 259,400

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