Income Taxes (Narrative1) (Details) (USD $)	12 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Income Taxes Narrative1 Details
Foreign subsidiary income included in income before income taxes	$ 0	$ 0	$ 3,000
Tax interest and penalties	$ 0	$ 0	$ 0
Open Tax Years by Major Tax Jurisdiction	The 1995 through fiscal 2013 tax years generally remain subject to examination by federal and most state tax authorities.

The sum of the amounts of estimated penalties and interest recognized in the period arising from income tax examinations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

Name:	us-gaap_IncomeTaxExaminationPenaltiesAndInterestExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration