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Line Of Credit	12 Months Ended
Line Of Credit	Mar. 31, 2012
Line of Credit Facility [Abstract]
Line Of Credit	Line of Credit We currently have a revolving line of credit for $15.0 million that matures December 1, 2013. Interest accrues on outstanding balances under the line of credit at a rate equal to LIBOR plus 1.5 percent. The credit line is secured by substantially all of our assets and includes certain financial covenants. In December, 2011, the agreement was amended to include a requirement that we maintain cash liquidity of three times the amount of all cumulative quarterly losses. One of the financial covenants relates to reporting after-tax income of not less than $1.00 on an annual basis. Wells Fargo Bank N.A. waived the income and cash liquidity requirements for the year ended March 31, 2012. On May 31, 2012, the credit line was amended to add a requirement that we maintain at least $10.0 million in cash liquidity. At March 31, 2012, we had no outstanding borrowings under this agreement and are in compliance with the remaining covenants.

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

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