Commitments and Contingencies (Details 3) (USD $)	Dec. 31, 2014
Sublease payments
2014	$ 553,000

Amount of required minimum sublease rental payments receivable in the next fiscal year following the latest fiscal year for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year.

No definition available.

Name:	kbio_OperatingLeasesFutureMinimumSubleasePaymentsReceivableCurrent
Namespace Prefix:	kbio_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant