8. FAIR VALUE MEASUREMENTS
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3 Months Ended | 12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Mar. 31, 2013
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Dec. 31, 2012
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Fair Value Measurements | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
8. FAIR VALUE MEASUREMENTS |
The fair value hierarchy prioritizes the inputs used in valuation techniques into three levels as follows:
The Company recorded its warrants issued from 2010 through 2013 at fair value and designated them as Level 3 on their issuance dates. Warrants Except for the warrants issued September 26, 2012, the warrants were valued using a Monte Carlo Binomial Lattice-Based valuation methodology, adjusted for marketability restrictions. The warrants issued September 26, 2012, did not contain any anti-dilution protection features. As a result, the warrants were valued using the Black-Scholes Valuation Model. Of the various inputs used, the volatility and the current price of the Companys common stock most significantly impact the fair value adjustments of the warrants. As the Companys common stock increases or decreases, the valuation of the warrants will increase or decrease, respectively. As the estimated volatility of the Companys common stock increases or decreases, the valuation of the warrants will increase or decrease, respectively. These changes may result in significantly higher or lower fair value measurements from period to period. Significant assumptions used and related fair values for the warrants as of March 31, 2013 were as follows:
Significant assumptions used and related fair values for the warrants as of December 31, 2012 were as follows:
Convertible Notes The conversion feature imbedded in the convertible notes was valued using a combination of a Monte Carlo Binomial Lattice-Based valuation methodology, adjusted for marketability restrictions. Significant assumptions used and related fair value for the conversion feature as of March 31, 2013 were as follows:
Other Derivative Instruments The Companys other derivative instruments consist of commodity positions. The fair value of the commodity positions are based on quoted prices on the commodity exchanges and are designated as Level 1. The following table summarizes fair value measurements by level at March 31, 2013 (in thousands):
(1) Included in other current assets in the consolidated balance sheets. (2) Included in warrant liabilities and conversion feature at fair value in the consolidated balance sheets. (3) Included in accrued liabilities in the consolidated balance sheets.
The following table summarizes fair value measurements by level at December 31, 2012 (in thousands):
(1) Included in other current assets in the consolidated balance sheets. (2) Included in accrued liabilities in the consolidated balance sheets. For fair value measurements using significant unobservable inputs (Level 3), a description of the inputs and the information used to develop the inputs is required along with a reconciliation of Level 3 values from the prior reporting period. The changes in the Companys fair value of its Level 3 inputs were as follows (in thousands):
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The fair value hierarchy prioritizes the inputs used in valuation techniques into three levels, as follows:
The Company recorded its warrants issued from 2010 through 2012 and its Convertible Notes at fair value and designated them as Level 3 on their issuance date.
Warrants Except for the warrants issued September 26, 2012, the warrants were valued using a Monte Carlo Binomial Lattice-Based valuation methodology, adjusted for marketability restrictions. The warrants issued September 26, 2012, due to no anti-dilution protection features, were valued using the Black-Scholes Valuation Model.
Significant assumptions used and related fair values for the warrants as of December 31, 2012 were as follows:
Significant assumptions used and related fair values for the warrants as of December 31, 2011 were as follows:
Convertible Notes The Convertible Notes were valued using a combination of a Monte Carlo Binomial Lattice-Based valuation methodology for the embedded conversion feature, adjusted for marketability restrictions, combined with a discounted cash flow model for the payment stream of the debt instrument. The Company continued estimating the fair value of the Convertible Notes quarterly until their retirement on November 14, 2011.
Other Derivative Instruments The Companys other derivative instruments consist of commodity positions. The fair value of the commodity positions are based on quoted prices on the commodity exchanges and are designated as Level 1.
The following table summarizes fair value measurements by level at December 31, 2012 (in thousands):
(1) Included in other current assets in the consolidated balance sheets. (2) Included in other current liabilities in the consolidated balance sheets.
The following table summarizes fair value measurements by level at December 31, 2011 (in thousands):
(1) Included in other assets in the consolidated balance sheets. (2) Included in other liabilities in the consolidated balance sheets.
For fair value measurements using significant unobservable inputs (Level 3), a description of the inputs and the information used to develop the inputs is required along with a reconciliation of Level 3 values from the prior reporting period. The changes in the Companys fair value of its Level 3 inputs were as follows (in thousands):
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