Represents the amount of initial fair value of warrants issued.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents the penalty as a percentage of the outstanding principal amount, in case of redemption prior to maturity date.

+ References

No definition available.

+ Details

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Namespace Prefix:	kbio_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Libor floor rate.

+ References

No definition available.

+ Details

Name:	kbio_LiborFloorRate
Namespace Prefix:	kbio_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of loan tranches.

+ References

No definition available.

+ Details

Name:	kbio_NumberOfLoanTranches
Namespace Prefix:	kbio_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of exit fee of the drawn amount.

+ References

No definition available.

+ Details

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Namespace Prefix:	kbio_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Period of time between commencement of periodic monthly principal payments and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Warrant percentage ratio of amount drawn under credit facility to preferred stock exercise price.

+ References

No definition available.

+ Details

Name:	kbio_WarrantPercentageRatioOfAmountDrawnUnderCreditFacilityToPreferredStockExercisePrice
Namespace Prefix:	kbio_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(i)(4))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph i

-Subparagraph 4

-Article 4

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(i)(2))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph i

-Subparagraph 2

-Article 4

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

End date of debt instrument redemption period, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 470

-Section 50

-Paragraph 3

-Subparagraph e

-URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Start date of debt instrument redemption period, in CCYY-MM-DD format.

+ References

+ Details

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Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 1A

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount borrowed under the credit facility as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b),22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Notes Payable (Details) (USD $)		1 Months Ended			1 Months Ended		6 Months Ended	1 Months Ended	6 Months Ended	1 Months Ended	6 Months Ended					1 Months Ended
Notes Payable (Details) (USD $)	Jun. 30, 2014	Sep. 30, 2012 Loan And Security Agreement [Member] tranche	Jun. 30, 2014 Loan And Security Agreement [Member]	Jun. 19, 2013 Loan And Security Agreement [Member]	Sep. 30, 2012 Loan And Security Agreement [Member] London Interbank Offered Rate L I B O R [Member]	Sep. 30, 2012 Loan And Security Agreement [Member] Debt Instrument Redemption Period One [Member]	Jun. 30, 2014 Loan And Security Agreement [Member] Debt Instrument Redemption Period One [Member]	Sep. 30, 2012 Loan And Security Agreement [Member] Debt Instrument Redemption Period Two [Member]	Jun. 30, 2014 Loan And Security Agreement [Member] Debt Instrument Redemption Period Two [Member]	Sep. 30, 2012 Loan And Security Agreement [Member] Debt Instrument Redemption Period Three [Member]	Jun. 30, 2014 Loan And Security Agreement [Member] Debt Instrument Redemption Period Three [Member]	Sep. 30, 2012 Loan And Security Agreement [Member] Minimum [Member]	Sep. 30, 2012 Loan And Security Agreement [Member] First Tranche [Member]	Sep. 30, 2012 Loan And Security Agreement [Member] First Tranche [Member] Series E Preferred Stock [Member]	Sep. 30, 2012 Loan And Security Agreement [Member] Second Tranche [Member]	May 31, 2014 Loan And Security Agreement [Member] Third Tranche [Member]	Jun. 30, 2013 Loan And Security Agreement [Member] Third Tranche [Member]	Sep. 30, 2012 Loan And Security Agreement [Member] Third Tranche [Member]
Notes payable
Maximum amount of borrowing under the agreement		$ 15,000,000											$ 5,000,000		$ 5,000,000			$ 5,000,000
Amount of borrowing required to be drawn												10,000,000
Amount of remaining borrowing capacity		5,000,000
Number of loan tranches		3
Variable rate basis					one month LIBOR
Spread on variable rate (as a percent)					6.00%
LIBOR floor rate					3.00%
Straight-line principal payments period		36 months
Percentage of exit fee of drawn amount		3.00%
Warrants issued as a percentage of amount drawn under credit facility														4.00%
Exercise price of warrant (in dollars per share)	5.13			12.11										12.11			12.11
Prepayment fee percentage							5.00%		2.00%		1.00%
Prepayment period start date								Jan. 01, 2014		Jan. 01, 2016
Prepayment period end date						Dec. 31, 2014		Dec. 31, 2015
Tranche draw down																5,000,000	5,000,000
Debt discount related to issuance of warrants			82,000
Issuance of warrant to purchase shares of common stock	38,997																49,548
Warrants initial fair value																	$ 130,000