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15. Commitments and contingencies (Details) (USD $)
Mar. 31, 2014
Contractual Obligation  
Total $ 11,112,059
2014 7,779,407
2015 1,680,958
2016 1,516,681
2017 and Later 135,013
Notes payable
  
Contractual Obligation  
Total 2,931,593
2014 2,931,593
2015   
2016   
2017 and Later   
Deferred salary
  
Contractual Obligation  
Total 838,476
2014 838,476
2015   
2016   
2017 and Later   
Rent obligations
  
Contractual Obligation  
Total 1,260,644
2014 677,737
2015 339,958
2016 242,949
2017 and Later   
Accrued board fees
  
Contractual Obligation  
Total 1,515,820
2014 1,515,820
2015   
2016   
2017 and Later   
Employee contracts: other
  
Contractual Obligation  
Total 3,931,156
2014 1,181,411
2015 1,341,000
2016 1,273,732
2017 and Later 135,013
Accrued interest
  
Contractual Obligation  
Total 634,370
2014 634,370
2015   
2016   
2017 and Later