Restructuring Charges - Restructuring Activities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Restructuring Reserve [Roll Forward]
Liability, beginning balance			$ 577
Restructuring charges	$ 15	$ (110)	111	$ 1,101
Cash payments			(320)
Non-cash items			(2)
Liability, ending balance	366		366
Workforce Reduction [Member]
Restructuring Reserve [Roll Forward]
Liability, beginning balance			449
Restructuring charges			109
Cash payments			(270)
Non-cash items			(14)
Liability, ending balance	274		274
Operating Lease Commitments [Member]
Restructuring Reserve [Roll Forward]
Liability, beginning balance			113
Restructuring charges			0
Cash payments			(41)
Non-cash items			12
Liability, ending balance	84		84
Other [Member]
Restructuring Reserve [Roll Forward]
Liability, beginning balance			15
Restructuring charges			2
Cash payments			(9)
Non-cash items			0
Liability, ending balance	$ 8		$ 8