| 3. Summary of Significant Accounting Policies (Details Narrative) (USD $) In Thousands, except Share data, unless otherwise specified | Sep. 30, 2014 | Mar. 31, 2014 | 
|---|---|---|
| Allowance for uncollectible accounts receivable | $ 19 | $ 8 | 
| Ruthigen [Member] | ||
| Common shares owned, investment | 2,000,000 | 2,000,000 | 
| X | ||||||||||
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- Definition No authoritative reference available. No definition available. 
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| X | ||||||||||
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- Definition For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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