Restructuring By Type (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Mar. 31, 2016
Restructuring Reserve [Roll Forward]
Fiscal year 2016 charges	$ 7,369	$ 0
Brand Realignment
Restructuring Reserve [Roll Forward]
Fiscal year 2016 charges	7,700		$ 24,800
Paid in cash	(14,500)		(1,800)
Non-cash	(400)		(10,100)
Liability as of March 31, 2016	12,900
Liability as of December 31, 2016	5,700		12,900
Lease Termination Costs | Brand Realignment
Restructuring Reserve [Roll Forward]
Fiscal year 2016 charges	4,700		8,900
Paid in cash	(7,800)		(1,200)
Non-cash	0		0
Liability as of March 31, 2016	7,700
Liability as of December 31, 2016	4,600		7,700
Severance Costs | Brand Realignment
Restructuring Reserve [Roll Forward]
Fiscal year 2016 charges	1,000		4,000
Paid in cash	(3,200)		(600)
Non-cash	(300)		0
Liability as of March 31, 2016	3,400
Liability as of December 31, 2016	900		3,400
Leasehold Impairments | Brand Realignment
Restructuring Reserve [Roll Forward]
Fiscal year 2016 charges	100		5,800
Paid in cash	0		0
Non-cash	(100)		(5,800)
Liability as of March 31, 2016	0
Liability as of December 31, 2016	0		0
Software Impairments | Brand Realignment
Restructuring Reserve [Roll Forward]
Fiscal year 2016 charges	0		3,800
Paid in cash	0		0
Non-cash	0		(3,800)
Liability as of March 31, 2016	0
Liability as of December 31, 2016	0		0
Other | Brand Realignment
Restructuring Reserve [Roll Forward]
Fiscal year 2016 charges	1,900		2,300
Paid in cash	(3,500)		0
Non-cash	0		(500)
Liability as of March 31, 2016	1,800
Liability as of December 31, 2016	$ 200		$ 1,800