Restructuring - Summary of Restructuring Charges (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
|
| Restructuring Cost and Reserve [Line Items] | ||||
| Total Restructuring Expenses | $ (882) | $ 13,445 | $ 24 | $ 13,772 |
| Contractual Lease Obligations | ||||
| Restructuring Cost and Reserve [Line Items] | ||||
| Total Restructuring Expenses | 207 | 11,841 | 926 | 11,318 |
| Employee Severance | ||||
| Restructuring Cost and Reserve [Line Items] | ||||
| Total Restructuring Expenses | 87 | 1,144 | 601 | 1,590 |
| Other Reversals | ||||
| Restructuring Cost and Reserve [Line Items] | ||||
| Total Restructuring Expenses | (1,176) | 0 | (1,176) | 0 |
| Gain on Sale of Closed Store Properties | ||||
| Restructuring Cost and Reserve [Line Items] | ||||
| Total Restructuring Expenses | 0 | 0 | (327) | 0 |
| Fixed Asset Impairment | ||||
| Restructuring Cost and Reserve [Line Items] | ||||
| Total Restructuring Expenses | $ 0 | $ 460 | $ 0 | $ 864 |