Warrants - Note 8	6 Months Ended
Jun. 30, 2011
Equity [Abstract]
Warrants	8. WARRANTS Prior to 2011, we had common stock warrants outstanding that were issued in connection with certain notes. The warrants met the definition of derivative instruments that must be accounted for as liabilities because we could not engage in certain corporate transactions affecting the common stock unless we made a cash payment to the holders of the warrants. During 2010 these warrants expired unexercised. We recorded changes in the fair values of the warrants in the statement of operations each period. We valued the warrants at June 30, 2010 using the Black-Scholes option pricing model with the following assumptions: expected volatility of 80%; expected dividend yield of 0%; risk free interest rate of 0.21%; and contractual lives of 0.4 years. The change in value of the warrants of $98,000 and $491,000 for the three and six months ended June 30, 2010, respectively, was recorded as a non-operating loss and is included in "Gain on derivative instruments, net" in the consolidated statement of operations.

- Definition

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

+ References+ Details