Note 1. Summary of Significant Accounting Policies (Details) (USD $)	Sep. 30, 2013	Mar. 31, 2013	Sep. 30, 2012	Mar. 31, 2012
Note 1. Summary of Significant Accounting Policies (Details) [Line Items]
Cash and Cash Equivalents, at Carrying Value (in Dollars)	$ 455,000	$ 788,000	$ 3,063,000	$ 2,674,000
Chairman, Lewis C. Pell [Member]
Note 1. Summary of Significant Accounting Policies (Details) [Line Items]
Long Term Debt Maximum Amount Lender Agreed To Provide Financial Assistance (in Dollars)	5,000,000
Stryker [Member] | Sales Revenue, Goods, Net [Member]
Note 1. Summary of Significant Accounting Policies (Details) [Line Items]
Percentage of Total Segment Net Sales and Total Accounts Receivable, Net	10.00%
Convertible Debt [Member]
Note 1. Summary of Significant Accounting Policies (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars)	$ 3,500,000