Quarterly report pursuant to Section 13 or 15(d)

Investments (Details)

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Investments (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
6 Months Ended
Sep. 30, 2014
Mar. 31, 2014
Sep. 30, 2014
Nano Vibronix [Member]
Convertible Promissory Note [Member]
Nov. 22, 2011
Nano Vibronix [Member]
Convertible Promissory Note [Member]
Nano Vibronix Transaction [Abstract]        
Investment in convertible promissory note $ 395 $ 378 [1]   $ 300
Interest rate on convertible promissory note (in hundredths)     10.00%  
Maturity date of convertible promissory note     Nov. 15, 2014  
Conversion into Series B-1 Participating Convertible Preferred Stock     $ 3,000  
Conversion price (in dollars per share)     $ 0.284  
[1] Derived from the Company's audited consolidated financial statements.