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CASH EQUIVALENTS
3 Months Ended
Mar. 31, 2013
Cash and Cash Equivalents [Abstract]  
CASH EQUIVALENTS

(2) CASH EQUIVALENTS

Our available-for-sale securities as of March 31, 2013 and December 31, 2012 consisted of money market funds primarily containing U.S. government-backed securities, with original maturities of ninety days or less. The carrying value of our money market funds is included in cash equivalents and approximates their fair value. The Company's bank accounts have been placed under a control agreement in accordance with the April 2011 convertible note financing (see Note 8).