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

Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt and Other Financings (Details)

Long-Term Debt and Other Financings (Details) $ / shares in Units, € in Millions			1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 09, 2015 EUR (€) Tranche	Sep. 27, 2012 USD ($) $ / shares shares	Jan. 31, 2015 USD ($)	Jun. 30, 2015 USD ($) $ / shares shares	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) $ / shares shares	Jun. 30, 2014 USD ($)	Dec. 31, 2011 USD ($)	Feb. 27, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2011 EUR (€)
Debt Instrument [Line Items]
Accrued interest						$ (210,000)	$ 1,570,000
Unrealized foreign exchange gain (loss)						1,571,000	241,000
Carrying value of the loan				$ 48,004,000		48,004,000
Loss on extinguishment of debt						(429,000)	0
Aggregate future principal and final fee payments of total interest bearing obligations - long-term [Abstract]
Six months ending December 31, 2015				14,746,000		14,746,000
Year ended 2016				9,118,000		9,118,000
Year ended 2017				14,787,000		14,787,000
Year ended 2018				18,016,000		18,016,000
Long-term debt including current portion				56,667,000		56,667,000
Less: Interest, final payment fee, discount and issuance cost				(8,663,000)		(8,663,000)
Total long-term				48,004,000		48,004,000
Less: current portion				(15,793,000)		(15,793,000)
Total long-term debt				32,211,000		32,211,000
Interest expense and amortization of debt issuance costs [Abstract]
Interest expense				1,007,000	$ 1,110,000	$ 2,123,000	2,236,000
Hercules Loan [Member]
Debt Instrument [Line Items]
Maturity date						Sep. 01, 2018
Variable rate basis						The interest rate will be calculated at a rate equal to 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%, and (ii) 9.40%.
Outstanding principal balance				20,000,000		$ 20,000,000
Unamortized discount on debt				0		0
Amortization of debt discount				100,000		200,000
Carrying value of the loan				$ 20,000,000		20,000,000			$ 20,000,000
Debt issuance costs						$ 500,000
Aggregate number of unregistered shares of common stock called by warrants (in shares) \| shares				181,268		181,268
Warrants exercise price (in dollars per share) \| $ / shares				$ 3.31		$ 3.31
Fair value of warrant liability									500,000
Percentage bearing variable rate (in hundredths)				9.40%		9.40%
Reduction of percentage of interest under loan agreement (in hundredths)				7.25%		7.25%
Period of interest						1 year
Amortization date						Jul. 01, 2016
Date of extension of amortization						Oct. 01, 2016
Period of interest amortized						30 months
Prepayment fee within twelve months of maturity (in hundredths)						3.00%
Prepayment fee after twelve months but before twenty four months of maturity (in hundredths)						2.00%
Prepayment fee after twenty four months of maturity (in hundredths)						1.00%
Additional interest rate in case of default (in hundredths)						5.00%
Final payment fee				$ 1,200,000		$ 1,200,000
Exercisable period of warrants						5 years
Aggregate future principal and final fee payments of total interest bearing obligations - long-term [Abstract]
Total long-term				20,000,000		$ 20,000,000			$ 20,000,000
Interest expense and amortization of debt issuance costs [Abstract]
Interest expense				652,000	0	$ 886,000	0
Servier Loan [Member]
Debt Instrument [Line Items]
Date of agreement						Dec. 30, 2010
Date of agreement, after amendment						Aug. 12, 2013
Maximum borrowing capacity under loan agreement \| €											€ 15.0
Period of interest resetting						6 months
Outstanding principal balance				$ 16,600,000		$ 16,600,000				$ 18,200,000
Proceeds from loan								$ 19,500,000
Initial interest rate during period (in hundredths)								3.22%
Interest rate reset semi-annually during period (in hundredths)						2.16%
Number of tranches \| Tranche	3
Accrued interest			$ 200,000
Euro to US Dollar exchange rates				1.109		1.109				1.216
Unamortized discount on debt				$ 8,900,000		$ 8,900,000
Unrealized foreign exchange gain (loss)				(400,000)	200,000	1,600,000	200,000
Loan discount balance				1,900,000		1,900,000
Amortization of debt discount				200,000	500,000	300,000	900,000
Carrying value of the loan				15,200,000		15,200,000				$ 16,200,000
Unrealized foreign exchange gain (loss) related to re-measurement of loan discount				(35,000)	(26,000)	200,000	(32,000)
Recognition of deferred revenue				200,000	500,000	300,000	900,000
Debt issuance costs						6,000
Aggregate future principal and final fee payments of total interest bearing obligations - long-term [Abstract]
Total long-term				15,200,000		15,200,000				16,200,000
Interest expense and amortization of debt issuance costs [Abstract]
Interest expense				$ 272,000	600,000	$ 527,000	1,188,000
Servier Loan [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest rate reset semi-annually during period (in hundredths)						2.31%
Servier Loan [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Interest rate reset semi-annually during period (in hundredths)						3.83%
Servier Loan [Member] \| Tranche One [Member]
Debt Instrument [Line Items]
Maturity date	Jan. 15, 2016
Principal payment amount \| €	€ 3.0
Servier Loan [Member] \| Tranche Two [Member]
Debt Instrument [Line Items]
Maturity date	Jan. 15, 2017
Principal payment amount \| €	€ 5.0
Servier Loan [Member] \| Tranche Three [Member]
Debt Instrument [Line Items]
Maturity date	Jan. 15, 2018
Principal payment amount \| €	€ 7.0
General Electric Capital Corporation Term Loan [Member]
Debt Instrument [Line Items]
Outstanding principal balance								$ 10,000,000
Aggregate number of unregistered shares of common stock called by warrants (in shares) \| shares		39,346		263,158		263,158
Warrants exercise price (in dollars per share) \| $ / shares		$ 3.54		$ 1.14		$ 1.14
Immediate Term for warrants exercisable (in years)		5 years				5 years
Fair value of warrant liability		$ 100,000						$ 200,000
Loss on extinguishment of debt						$ 400,000
Outstanding principle balance and interest						5,500,000
Interest expense and amortization of debt issuance costs [Abstract]
Interest expense				$ 0	423,000	$ 548,000	870,000
Novartis Note [Member]
Debt Instrument [Line Items]
Maturity date						Jun. 30, 2015
Research and development expenses funded through loan facility, maximum (in hundredths)						75.00%
Maximum borrowing capacity under loan agreement				$ 50,000,000		$ 50,000,000
Interest rate at period end (in hundredths)				2.44%		2.44%
Outstanding principal balance				$ 13,500,000		$ 13,500,000				$ 13,400,000
Interest expense and amortization of debt issuance costs [Abstract]
Interest expense				80,000	78,000	$ 159,000	155,000
Novartis Note [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (in hundredths)						2.00%
Other [Member]
Interest expense and amortization of debt issuance costs [Abstract]
Interest expense				$ 3,000	$ 9,000	$ 3,000	$ 23,000