Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements (Details 2)

v2.4.0.6
Fair Value Measurements (Details 2) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Warrants | Minimum
   
Assumptions for calculating fair value of warrants    
Risk-free interest rates range (as a percent) 0.10% 0.00%
Contractual term 6 months 1 month 6 days
Expected volatility range (as a percent) 37.20% 60.50%
Warrants | Maximum
   
Assumptions for calculating fair value of warrants    
Risk-free interest rates range (as a percent) 0.20% 1.50%
Contractual term 1 year 2 months 12 days 4 years 10 months 24 days
Expected volatility range (as a percent) 65.80% 84.90%
Carrying Value
   
Fair Value Measurements    
Obligations under the credit facility 13,476 10,431
Estimated Fair Value
   
Fair Value Measurements    
Obligations under the credit facility 13,476 10,431