Organization and Summary of Significant Accounting Policies (Details Textual) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	May 31, 2013	Feb. 28, 2013
Summary of Significant Accounting Policies (Textual)
Allowance for doubtful accounts (in dollars)	$ 2	$ 2
Description of inventory valuation policy for Raw material /Work in process	All material purchased, processed, and/or used in the last two fiscal years is valued at the lower of its acquisition cost or market. All material not purchased/used in the last two fiscal years is fully reserved for.
Treasury bills [Member]
Summary of Significant Accounting Policies (Textual)
Maturity term	One year or less
CD [Member]
Summary of Significant Accounting Policies (Textual)
Maturity term	One to three years