Quarterly report pursuant to Section 13 or 15(d)

Investments (Details)

v2.4.0.6
Investments (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 3 Months Ended 12 Months Ended
Jun. 30, 2012
Mar. 31, 2012
Jun. 30, 2012
Nano Vibronix [Member]
Jun. 30, 2012
Nano Vibronix [Member]
Convertible promissory note [Member]
Nov. 22, 2011
Nano Vibronix [Member]
Convertible promissory note [Member]
Jun. 30, 2012
Sequel Power [Member]
Mar. 31, 2011
Sequel Power [Member]
Jan. 14, 2011
Sequel Power [Member]
Jan. 14, 2009
Sequel Power [Member]
Nano Vibronix Transaction [Abstract]                  
Strategic investment $ 320 $ 312     $ 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            
Sequel Power Transaction [Abstract]                  
Cash contribution towards economic interest           2,000      
Economic interest (in hundredths) 100.00%         25.00%      
Warrants outstanding to purchase shares of common stock (in shares) 285,454         137,466     185,777
Exercise price of warrants (in dollars per share)                 $ 3.15
Exercisable period for warrants           P4Y      
Warrants transferred to purchase shares of common stock (in shares)           48,311      
Results of Sequel Power Operations [Abstract]                  
Solar development model value           1,377   1,730  
Estimated useful life of solar development model (in years)             10 years    
Intangible assets value           $ 0