Restructuring Charges - Schedule of Restructuring Activities (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Dec. 31, 2012	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Restructuring Reserve [Roll Forward]
Liability, Beginning of Period	$ 0	$ 548	$ 0
Restructuring charges	6,200	1,134	6,435	875
Cash payments		1,410	1,168
Non-cash items		(272)	(4,719)
Liability, End of Period		0	548	0
Workforce Reduction
Restructuring Reserve [Roll Forward]
Liability, Beginning of Period	0	548	0
Restructuring charges		862	1,716
Cash payments		1,410	1,168
Non-cash items		0	0
Liability, End of Period		0	548
Asset Impairment
Restructuring Reserve [Roll Forward]
Liability, Beginning of Period	0	0	0
Restructuring charges		272	4,719
Cash payments		0	0
Non-cash items		(272)	(4,719)
Liability, End of Period		$ 0	$ 0