Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements (Details 2)

v2.4.1.9
Fair Value Measurements (Details 2) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 31, 2013
Mar. 31, 2015
Mar. 31, 2014
Warrants | Minimum      
Assumptions for calculating fair value of warrants      
Risk-free interest rates range (as a percent) 0.10%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_FinancialInstrumentAxis
= us-gaap_WarrantMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Contractual term 6 months    
Expected volatility range (as a percent) 37.20%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_FinancialInstrumentAxis
= us-gaap_WarrantMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
   
Warrants | Maximum      
Assumptions for calculating fair value of warrants      
Risk-free interest rates range (as a percent) 0.20%us-gaap_FairValueAssumptionsRiskFreeInterestRate
/ us-gaap_FinancialInstrumentAxis
= us-gaap_WarrantMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
   
Contractual term 1 year 2 months 12 days    
Expected volatility range (as a percent) 65.80%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ us-gaap_FinancialInstrumentAxis
= us-gaap_WarrantMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
   
Carrying Value      
Fair Value Measurements      
Obligations under the credit facility   $ 12,953us-gaap_LinesOfCreditFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
$ 13,228us-gaap_LinesOfCreditFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_CarryingReportedAmountFairValueDisclosureMember
Total      
Fair Value Measurements      
Obligations under the credit facility   $ 12,953us-gaap_LinesOfCreditFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember
$ 13,228us-gaap_LinesOfCreditFairValueDisclosure
/ us-gaap_FairValueByMeasurementBasisAxis
= us-gaap_EstimateOfFairValueFairValueDisclosureMember