Restructuring - Narrative (Details) $ in Thousands	12 Months Ended			26 Months Ended
	Mar. 31, 2018 USD ($) store	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Mar. 31, 2018 USD ($) store
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,667	$ 28,984	$ 24,673
Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Cost incurred to date	55,324			$ 55,324
Restructuring charges	1,667	28,984	24,673	55,324
Restructuring reserve	$ 4,728	11,080	12,874	$ 4,728
Fiscal Year 2016 Restructuring Plan | Facility Closing
Restructuring Cost and Reserve [Line Items]
Number of stores closed | store	32			32
Short Term Liabilities | Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	$ 1,347			$ 1,347
Long Term Liabilities | Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	3,381			$ 3,381
Selling, General and Administrative Expenses | Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,667	$ 28,984	22,824
Cost of Sales | Fiscal Year 2016 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges			$ 1,849