Annual report pursuant to Section 13 and 15(d)

Accrued Expenses - Schedule of Accrued Expenses (Detail)

v2.4.1.9
Accrued Expenses - Schedule of Accrued Expenses (Detail) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Accrued expenses    
Accrued expenses bonus payments $ 252,953us-gaap_AccruedBonusesCurrent $ 137,660us-gaap_AccruedBonusesCurrent
Accrued expenses severance payments   319,031us-gaap_WorkersCompensationLiabilityCurrent
Payroll related accruals 79,939us-gaap_AccruedSalariesCurrent 90,549us-gaap_AccruedSalariesCurrent
Accrued professional fees 403,451us-gaap_AccruedProfessionalFeesCurrent  
Other accrued expenses 7,523us-gaap_OtherAccruedLiabilitiesCurrent 12,389us-gaap_OtherAccruedLiabilitiesCurrent
Total amount of accrued expenses 743,866us-gaap_AccruedLiabilitiesCurrent 559,629us-gaap_AccruedLiabilitiesCurrent
Accrued expenses non-current    
Reserve for litigation with TUM 327,937us-gaap_LitigationReserveNoncurrent 373,059us-gaap_LitigationReserveNoncurrent
Accrued expenses Restoration 6,051us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent 6,883us-gaap_AccruedEnvironmentalLossContingenciesNoncurrent
Total amount of accrued expenses non-current 333,988us-gaap_OtherAccruedLiabilitiesNoncurrent 379,942us-gaap_OtherAccruedLiabilitiesNoncurrent
Total amount of accrued expenses $ 1,077,854us-gaap_AccruedLiabilitiesCurrentAndNoncurrent $ 939,571us-gaap_AccruedLiabilitiesCurrentAndNoncurrent