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Supplemental Financial Information - Restructuring Charges (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Condensed Financial Statements, Captions [Line Items] |  |  |
Restructuring charges | $ 948 | $ 2,532 | $ 2,760
Fixed assets impairment charges | 1,537 | 1,506 | 0
Other impairment charges | 0 | 0 | 807
Total impairment charges | 1,537 | 1,506 | 807
Total restructuring and impairment charges | 2,485 | 4,038 | 3,567
Global Headquarters Move |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Restructuring charges | 0 | 550 | 2,760
Facility Closing |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Restructuring charges | $ 948 | $ 1,982 | $ 0

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