Restructuring - Narrative (Details) $ in Thousands	3 Months Ended		36 Months Ended	39 Months Ended
	Mar. 31, 2019 USD ($) store	Mar. 31, 2018 USD ($)	Dec. 31, 2018 store	Mar. 31, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Document Period End Date	Mar. 31, 2019
Restructuring and related cost, number of store closures | store	84
Total Restructuring Expenses	$ 13,281	$ 906
Restructuring Program 2019
Restructuring Cost and Reserve [Line Items]
Total Restructuring Expenses	12,900
Restructuring Program 2016 and 2017
Restructuring Cost and Reserve [Line Items]
Total Restructuring Expenses	400	900		$ 39,700
Gain on Sale of Closed Store Properties
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, number of store closures | store			139
Total Restructuring Expenses	$ 0	$ (327)