XML 74 R41.htm IDEA: XBRL DOCUMENT v2.4.1.9
Notes Payable (Details) (USD $)
12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended
Dec. 31, 2014
Sep. 30, 2012
tranche
Dec. 31, 2013
May 31, 2014
Jun. 30, 2013
Jun. 19, 2013
Notes payable            
Exercise price of warrant (in dollars per share) 5.13us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights          
Issuance of warrant to purchase shares of common stock 38,997us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights          
Minimum [Member]            
Notes payable            
Prepayment fee (as a percent) 1.00%kbio_DebtInstrumentPrepaymentFeePercentage
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
         
Maximum [Member]            
Notes payable            
Prepayment fee (as a percent) 2.00%kbio_DebtInstrumentPrepaymentFeePercentage
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
         
Loan and Security Agreement [Member]            
Notes payable            
Maximum amount of borrowing under the agreement   $ 15,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
       
Amount of remaining borrowing capacity   5,000,000us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
       
Number of loan tranches   3kbio_NumberOfLoanTranches
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
       
Straight-line principal payments period   36 months        
Percentage of exit fee of drawn amount   3.00%kbio_PercentageOfExitFeeOfDrawnAmount
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
       
Exercise price of warrant (in dollars per share) 12.11us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
        12.11us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
Debt discount related to issuance of warrants 53,000us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
79,000us-gaap_DebtInstrumentUnamortizedDiscount
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
       
Debt issuance cost paid 114,000us-gaap_PaymentsOfDebtIssuanceCosts
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
         
Interest expense related to borrowings 1,200,000us-gaap_InterestExpenseDebt
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
  1,100,000us-gaap_InterestExpenseDebt
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
     
Effective interest rate (as a percent) 10.00%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
         
Loan and Security Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member]            
Notes payable            
Variable rate basis   one month LIBOR        
Spread on variable rate (as a percent)   6.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
       
LIBOR floor rate   3.00%kbio_LiborFloorRate
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
/ us-gaap_VariableRateAxis
= us-gaap_LondonInterbankOfferedRateLIBORMember
       
Loan and Security Agreement [Member] | Debt Instrument, Redemption, Period One [Member]            
Notes payable            
Prepayment fee percentage 5.00%kbio_DebtInstrumentPrepaymentPenaltyAsPercentageOfDebtOutstandingPrincipalAmount
/ us-gaap_DebtInstrumentRedemptionPeriodAxis
= us-gaap_DebtInstrumentRedemptionPeriodOneMember
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
         
Prepayment period end date   Dec. 31, 2014        
Loan and Security Agreement [Member] | Debt Instrument, Redemption, Period Two [Member]            
Notes payable            
Prepayment fee percentage 2.00%kbio_DebtInstrumentPrepaymentPenaltyAsPercentageOfDebtOutstandingPrincipalAmount
/ us-gaap_DebtInstrumentRedemptionPeriodAxis
= us-gaap_DebtInstrumentRedemptionPeriodTwoMember
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
         
Prepayment period start date Jan. 01, 2014          
Prepayment period end date   Dec. 31, 2015        
Loan and Security Agreement [Member] | Debt Instrument, Redemption, Period Three [Member]            
Notes payable            
Prepayment fee percentage 1.00%kbio_DebtInstrumentPrepaymentPenaltyAsPercentageOfDebtOutstandingPrincipalAmount
/ us-gaap_DebtInstrumentRedemptionPeriodAxis
= us-gaap_DebtInstrumentRedemptionPeriodThreeMember
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
         
Prepayment period start date Jan. 01, 2016          
Interest rate for prepayment 5.00%kbio_DebtInstrumentInterestRateIncreaseInEventOfDefault
/ us-gaap_DebtInstrumentRedemptionPeriodAxis
= us-gaap_DebtInstrumentRedemptionPeriodThreeMember
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
         
Loan and Security Agreement [Member] | Minimum [Member]            
Notes payable            
Amount of borrowing required to be drawn   10,000,000us-gaap_LineOfCreditFacilityAmountOutstanding
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
       
Loan and Security Agreement [Member] | Maximum [Member]            
Notes payable            
Issuance of warrant to purchase shares of common stock 49,548us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
        49,548us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
Loan and Security Agreement [Member] | First Tranche [Member]            
Notes payable            
Maximum amount of borrowing under the agreement   5,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= kbio_FirstTrancheMember
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
       
Loan and Security Agreement [Member] | First Tranche [Member] | Series E Preferred Stock [Member]            
Notes payable            
Warrants issued as a percentage of amount drawn under credit facility   4.00%kbio_WarrantPercentageRatioOfAmountDrawnUnderCreditFacilityToPreferredStockExercisePrice
/ us-gaap_DebtInstrumentAxis
= kbio_FirstTrancheMember
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesEPreferredStockMember
       
Exercise price of warrant (in dollars per share)   12.11us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
/ us-gaap_DebtInstrumentAxis
= kbio_FirstTrancheMember
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesEPreferredStockMember
       
Loan and Security Agreement [Member] | Second Tranche [Member]            
Notes payable            
Maximum amount of borrowing under the agreement   5,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= kbio_SecondTrancheMember
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
       
Loan and Security Agreement [Member] | Third Tranche [Member]            
Notes payable            
Maximum amount of borrowing under the agreement   5,000,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
/ us-gaap_DebtInstrumentAxis
= kbio_ThirdTrancheMember
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
       
Exercise price of warrant (in dollars per share)         12.11us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights
/ us-gaap_DebtInstrumentAxis
= kbio_ThirdTrancheMember
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
 
Tranche draw down       5,000,000us-gaap_ProceedsFromIssuanceOfDebt
/ us-gaap_DebtInstrumentAxis
= kbio_ThirdTrancheMember
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
5,000,000us-gaap_ProceedsFromIssuanceOfDebt
/ us-gaap_DebtInstrumentAxis
= kbio_ThirdTrancheMember
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
 
Issuance of warrant to purchase shares of common stock         49,548us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
/ us-gaap_DebtInstrumentAxis
= kbio_ThirdTrancheMember
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember
 
Warrants initial fair value         $ 130,000kbio_CommonStockWarrantsFairValue
/ us-gaap_DebtInstrumentAxis
= kbio_ThirdTrancheMember
/ us-gaap_LongtermDebtTypeAxis
= kbio_LoanAndSecurityAgreementMember