Net Proceeds From Issuance Of Common Stock.

No definition available.

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- Definition

Other Offering Expenses.

+ References

No definition available.

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- Definition

Represents the maximum amount of securities for which the entity filed shelf registration statement on Form S-3 with the Securities and Exchange Commission under the Securities Act.

+ References

No definition available.

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- Definition

Underwriting Discounts Commissions And Offering Expenses.

+ References

No definition available.

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- Details

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ 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 210.5-02.29)

-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 30

-Article 5

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- Definition

Cash paid for expenses incurred during underwriting activities (the process to review insurance applications, evaluate risks, accept or reject applications, and determine the premiums to be charged) for insurance companies.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585

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- Definition

The cash inflow from the additional capital contribution to the entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585

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- Definition

Amount per share or per unit of equity securities issued by non-development stage entity.

+ References

No definition available.

+ Details

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- Definition

Number of new stock issued during the period.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

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- Definition

The maximum number of securities classified as temporary equity that are permitted to be issued by an entity's charter and bylaws. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

+ 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 210.5-02.27(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 28

-Subparagraph b

-Article 5

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Stockholders' Equity (Details) (USD $)	1 Months Ended		12 Months Ended	1 Months Ended
Stockholders' Equity (Details) (USD $)	Oct. 31, 2013	Sep. 30, 2013	Dec. 31, 2013	Feb. 28, 2013	Dec. 31, 2014
Stockholders' Equity
Issued during the period (in shares)	8,625,000
Public offering price for common stock (in dollars per share)	$ 4.00us-gaap_SharesIssuedPricePerShare
Proceeds from Issuance of Common Stock	$ 34,500,000		$ 32,430,000
Net proceeds from issuance of common stock	32,000,000
Underwriting expenses	2,500,000us-gaap_PaymentsForUnderwritingExpense
Underwriting discounts and commissions	2,100,000
Other offering expenses	400,000kbio_OtherOfferingExpenses
Maximum amount of securities for which the entity filed and permitted		100,000,000
Common Stock, shares authorized upon the completion of the IPO			47,500,000us-gaap_CommonStockSharesAuthorized	47,500,000us-gaap_CommonStockSharesAuthorized	85,000,000us-gaap_CommonStockSharesAuthorized
IPO [Member]
Stockholders' Equity
Issued during the period (in shares)				8,750,000
Public offering price for common stock (in dollars per share)				$ 8.00
Proceeds from Issuance of Common Stock				70,000,000
Net proceeds from issuance of common stock				61,500,000
Underwriting expenses				8,500,000
Underwriting discounts and commissions				4,900,000
Other offering expenses				$ 3,600,000
Redeemable Convertible Preferred Stock [Member]
Stockholders' Equity
Shares authorized				0