Quarterly Financial Information (Unaudited) - Narrative (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Business Acquisition [Line Items] | |||||||||||
| Asset Impairment Charges | $ 20,098 | $ 0 | $ 0 | ||||||||
| Restructuring Expenses | $ (600) | $ (500) | $ 900 | $ (900) | $ (3,400) | $ (800) | $ (13,500) | $ (300) | $ (1,105) | (17,994) | $ (20,218) |
| Non-cash provisional income tax benefit | 137,000 | ||||||||||
| Remeasurement of net deferred tax liabilities | 140,000 | ||||||||||
| Estimated expense from loss of manufacturing deduction and other | $ 3,000 | ||||||||||
| Disposal Group, Disposed of by Sale, Not Discontinued Operations | HomeSmart | |||||||||||
| Business Acquisition [Line Items] | |||||||||||
| Impairment of long-lived assets to be disposed of | $ 1,100 | ||||||||||