XOMA Corporation Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Basis of Presentation and Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Long-Term Debt - Hercules Term Loan - Additional Information (Details)

v3.8.0.1

Long-Term Debt - Hercules Term Loan - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended
	Mar. 21, 2017	Feb. 27, 2015	Mar. 31, 2018	Mar. 31, 2017
Debt Instrument [Line Items]
Loss on extinguishment of debt				$ 515
Hercules Term Loan [Member]
Debt Instrument [Line Items]
Variable rate basis			The Hercules Term Loan had a variable interest rate that was the greater of either (i) 9.40% plus the prime rate as reported from time to time in The Wall Street Journal minus 7.25%, or (ii) 9.40%.
Prepayment charge not required to pay	1.00%
Loss on extinguishment of debt				$ 500
Aggregate number of unregistered shares of common stock called by warrants (in shares)		9,063
Exercise price of warrants (in dollars per share)		$ 66.20
Exercisable period of warrants		5 years
Warrants expiration period		2020-02
Minimum [Member] \| Hercules Term Loan [Member]
Debt Instrument [Line Items]
Percentage bearing variable rate		9.40%
Prime Rate [Member] \| Hercules Term Loan [Member]
Debt Instrument [Line Items]
Basis spread, addition		9.40%
Basis spread, subtraction		7.25%

- 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

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- 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

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- Definition

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

+ References

No definition available.

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- 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.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-SubTopic 50
-Section 40
-Paragraph 4
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- Definition

The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a rate subject to change from time to time.

+ 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 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

The month and year (YYYY-MM) in which the warrants or rights expire.

+ References

No definition available.

+ Details

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- Definition

Represents the exercisable period for warrants beginning on the date of issuance and ending on the earlier to occurrence.

+ References

No definition available.

+ Details

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- Definition

Percentage of prepayment charge on debt.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Reduction of percentage of interest under loan agreement.

+ References

No definition available.

+ Details

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