Note 1. The Company and Summary of Significant Accounting Policies (Details) (USD $)	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	May 01, 2013	Sep. 19, 2012	Mar. 31, 2011
Note 1. The Company and Summary of Significant Accounting Policies (Details) [Line Items]
Number of Reportable Segments	2
Cash and Cash Equivalents, at Carrying Value (in Dollars)	$ 788,000	$ 2,674,000			$ 9,180,000
Capital Available from Convertible Note (in Dollars)				3,000,000
Other Available Capital (in Dollars)			5,000,000
Investments Maturity Maximum Term Cash and Cash Equivalents	90 days
Property, Plant and Equipment, Useful Life	3 years
Depreciation, Depletion and Amortization (in Dollars)	$ 795,000	$ 832,000
Finite-Lived Intangible Asset, Useful Life	15 years
Minimum [Member] | Sales Revenue, Segment [Member]
Note 1. The Company and Summary of Significant Accounting Policies (Details) [Line Items]
Concentration Risk, Percentage	10.00%
Minimum [Member]
Note 1. The Company and Summary of Significant Accounting Policies (Details) [Line Items]
Finite-Lived Intangible Asset, Useful Life	6 years