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Fair Value of Financial Assets and Liabilities - Derivative Instruments (Valuation Assumptions for June 2016 Offering Warrants) (Details) - $ / shares
3 Months Ended
Jun. 03, 2016
Jun. 30, 2016
Fair Value Assumptions and Methodology for Assets and Liabilities [Line Items]    
Common stock closing price   $ 1.55
June 2016 Offering Liability [Member]    
Fair Value Assumptions and Methodology for Assets and Liabilities [Line Items]    
Volatility 123.00% 122.00%
Expected term (years) 5 years 4 years 11 months 5 days
Risk-free interest rate 1.23% 1.01%
Dividend yield 0.00% 0.00%
Exercise price $ 2.25 $ 2.25
Common stock closing price $ 2.06 $ 1.55