| **Unaudited Quarterly Results (unaudited)**            | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |
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| **Unaudited Quarterly Results (unaudited) [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |
| Unaudited Quarterly Results (unaudited)                | 14. Unaudited Quarterly Results (unaudited)Summarized quarterly financial data during 2011 and 2010 are as follows:   2011 Quarter Ended    March 31  June 30  September 30  December 31 Revenues $2,388  $74,407  $5,804  $2,197 Net income (loss)  (22,927 )  55,486   (11,432 )  (10,746 )Net income (loss) per share - basic  (0.69 )  1.66   (0.34 )  (0.32 )Net income (loss) per share - diluted  (0.69 )  1.64   (0.34 )  (0.32 )                     2010 Quarter Ended    March 31  June 30  September 30  December 31 Revenues $1,523  $2,305  $1,967  $2,157 Net loss  (18,583 )  (15,241 )  (17,101 )  (18,800 )Net loss per share - basic and diluted  (0.58 )  (0.47 )  (0.52 )  (0.57 )                   |

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The entire disclosure for the quarterly financial data in the annual financial statements.  The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.
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