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NATURE OF OPERATIONS AND BASIS OF PRESENTATION (Details) (USD $) | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |  |  | 1 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | ---
May 31, 2012 | Jun. 30, 2012 | Jun. 30, 2012 | Dec. 31, 2011 | Jun. 30, 2011 | Dec. 31, 2010 | Aug. 31, 2012 Subsequent event Sinclair | Aug. 10, 2012 Subsequent event Sinclair Minimum
Nature of Operations |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ 19,964,000 | $ 19,964,000 | $ 24,449,000 | $ 20,614,000 | $ 29,495,000 |  |
Period for which cash and cash equivalents are sufficient to meet anticipated short-term working capital needs and to fund our on-going sapacitabine clinical trials |  |  | 12 months |  |  |  |  |
Preferred stock dividend |  |  |  |  |  |  |  |
Dividend rate (as a percent) |  | 6.00% |  |  |  |  |  |
NASDAQ appeal |  |  |  |  |  |  |  |
Regain compliance period |  |  | 180 days |  |  |  |  |
Maximum exception period | 180 days |  |  |  |  |  |  |
Closing bid price of common stock that should be evidenced to regain compliance (in dollars per share) | $ 1.00 |  |  |  |  |  |  |
Period from NASDAQ Staff's notification, during which the closing bid price of the common stock must equals to or exceed the specified closing bid price to regain compliance | 10 days |  |  |  |  |  |  |
Subsequent Developments |  |  |  |  |  |  |  |
Quarterly installments receivable under royalty arrangement |  |  |  |  |  |  |  | $ 1,000,000
Period of royalty arrangement |  |  |  |  |  |  | 3 years |

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