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CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 65,767 | $ 78,445
Marketable securities | 496 |
Trade and other receivables, net | 4,069 | 3,309
Prepaid expenses and other current assets | 1,887 | 1,859
Total current assets | 72,219 | 83,613
Property and equipment, net | 1,997 | 5,120
Other assets | 664 | 669
Total assets | 74,880 | 89,402
Current liabilities: |  |
Accounts payable | 6,831 | 5,990
Accrued and other liabilities | 7,025 | 9,892
Deferred revenue – current | 3,198 | 1,089
Interest bearing obligations – current | 5,910 | 19,018
Accrued interest on interest bearing obligations – current | 331 | 257
Total current liabilities | 23,295 | 36,246
Deferred revenue – non-current |  | 1,939
Interest bearing obligations – non-current | 42,757 | 16,290
Contingent warrant liabilities | 10,464 | 31,828
Other liabilities – non-current | 673 |
Total liabilities | $ 77,189 | $ 86,303
Commitments and Contingencies (Note 13) |  |
Stockholders’ (deficit) equity: |  |
Preferred stock, $0.05 par value, 1,000,000 shares authorized, 0 issued and outstanding |  |
Common stock, $0.0075 par value, 277,333,332 shares authorized, 119,045,592 and 115,892,450 shares issued and outstanding at December 31, 2015 and 2014, respectively | $ 893 | $ 869
Additional paid-in capital | 1,136,881 | 1,121,707
Accumulated deficit | (1,140,083) | (1,119,477)
Total stockholders’ (deficit) equity | (2,309) | 3,099
Total liabilities and stockholders’ (deficit) equity | $ 74,880 | $ 89,402

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- Definition Accrued and other liabilities current. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
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- Definition Fair value of contingently redeemable warrants. + References No definition available. + Details
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Namespace Prefix: | xoma_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant