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Earnings Per Share (Details Textual) (USD $)
In Millions, except Per Share data, unless otherwise specified
 3 Months Ended
Jun. 30, 2014
2.25% Convertible Notes [Member]
  
Earnings Per Share (Textual) [Abstract]  
Debt interest rate 2.25%
Dividend Threshold for Adjustment to Conversion Price $ 0.14
2.25% Warrants [Member]
  
Earnings Per Share (Textual) [Abstract]  
Debt interest rate 2.25%
2.25% Purchased Options [Member]
  
Earnings Per Share (Textual) [Abstract]  
Debt interest rate 2.25%
3.00% Notes [Member]
  
Earnings Per Share (Textual) [Abstract]  
Debt interest rate 3.00%
3.00% Warrants [Member]
  
Earnings Per Share (Textual) [Abstract]  
Debt interest rate 3.00%
3.00% Purchased Options [Member]
  
Earnings Per Share (Textual) [Abstract]  
Debt interest rate 3.00%
3.00% Convertible Notes [Member]
  
Earnings Per Share (Textual) [Abstract]  
Debt Instrument, Repurchased Face Amount $ 92.5