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Impairment and other charges, net Accrued severance (Details) - USD ($) $ in Thousands | 4 Months Ended |
--- | --- | ---
Jan. 20, 2019 | Jan. 21, 2018 | Sep. 30, 2018
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring Costs |  | $ 5,840 | $ 358 |
Employee Severance [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring Reserve |  | 5,583 |  | $ 5,309
Restructuring Costs | [1] | 4,506 | $ (456) |
Payments for Restructuring |  | (4,200) |  |
Employee Severance & Other [Domain] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Restructuring Costs |  | $ 4,474 |  |
[1] | 2018 reflects a reduction in severance and related costs due to a change in the number of employees to be terminated in connection with our restructuring activities.

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