Restructuring and Related Charges (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Mar. 31, 2012
Restructuring Reserve [Roll Forward]
Balance at March 31, 2013		$ 584
Provision	55
Payments and settlements for restructuring	(354)
Balance at June 30, 2013	285	584
Severance and employment costs [Member] | Fiscal 2012 Restructuring Plan [Member]
Restructuring Reserve [Roll Forward]
Balance at March 31, 2013		348
Provision	7
Payments and settlements for restructuring	(279)
Balance at June 30, 2013	76	348
Severance and employment costs [Member] | Restructuring Plan Fiscal Two Zero One Four [Member]
Restructuring Reserve [Roll Forward]
Balance at March 31, 2013		0
Provision	44
Payments and settlements for restructuring	0
Balance at June 30, 2013	44	0
Facilities costs [Member] | Fiscal 2009 Restructuring Plan [Member]
Restructuring Reserve [Roll Forward]
Balance at March 31, 2013		236
Provision	4
Payments and settlements for restructuring	(75)
Balance at June 30, 2013	$ 165	$ 236