Restructuring Charges (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 534	$ 584	$ 6,049
Restructuring Charges	(996)	(1,289)	(1,087)
Payments for restructuring, severance and other charges	(1,080)	(1,339)	(6,552)
Ending Balance	450	534	584
Restructuring Plan Fiscal Two Zero One Four [Member] \| Severance and employment costs [Member]
Restructuring Reserve [Roll Forward]
Restructuring Charges	(628)
Payments for restructuring, severance and other charges	(178)
Ending Balance	450
Fiscal 2012 Restructuring Plan [Member] \| Severance and employment costs [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	534	348
Restructuring Charges	(368)	(1,257)	(1,146)
Payments for restructuring, severance and other charges	(902)	(723)	(6,055)
Ending Balance	$ 0	534	348
Fiscal 2012 Restructuring Plan [Member] \| Facilities costs [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance		0
Restructuring Charges		32	57
Payments for restructuring, severance and other charges		$ (268)	(240)
Ending Balance			0
Fiscal 2009 Restructuring Plan [Member] \| Severance and employment costs [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance		$ 0	0
Restructuring Charges			0
Payments for restructuring, severance and other charges			0
Ending Balance			0
Fiscal 2009 Restructuring Plan [Member] \| Facilities costs [Member]
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 0	236	495
Restructuring Charges		0	2
Payments for restructuring, severance and other charges		(348)	(257)
Ending Balance		$ 0	$ 236

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 5.P.3)
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 5
-Section P
-Subsection 3, 4

+ Details

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 5
-Section P
-Subsection 3, 4

+ Details

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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