Restructuring and other related costs - Restructuring related liabilities (Details) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||
---|---|---|---|---|---|
Mar. 31, 2019 |
Mar. 31, 2018 |
Mar. 31, 2020 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|
Restructuring Reserve [Roll Forward] | |||||
Restructuring (income) loss | $ 22,176 | $ 0 | $ (5,982) | $ 0 | $ 0 |
Employee severance and related expenses | |||||
Restructuring Reserve [Roll Forward] | |||||
Beginning balance | 0 | 96 | |||
Restructuring (income) loss | 600 | (22) | |||
Cash disbursements | (504) | (74) | |||
Ending balance | 96 | 0 | 0 | ||
Other costs | |||||
Restructuring Reserve [Roll Forward] | |||||
Beginning balance | 0 | 675 | |||
Restructuring (income) loss | 1,118 | 1,634 | |||
Cash disbursements | (443) | (2,309) | |||
Ending balance | 675 | 0 | 0 | ||
Employee severance and related expenses and other costs | |||||
Restructuring Reserve [Roll Forward] | |||||
Beginning balance | 0 | 771 | |||
Restructuring (income) loss | 1,718 | 1,612 | |||
Cash disbursements | (947) | (2,383) | |||
Ending balance | $ 771 | $ 0 | $ 0 |