| **Net Income (Loss) Per Share**   | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
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| **Net Loss Per Share [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |
| Net Loss Per Share                | 13. Net Income (Loss) Per ShareOur basic net income (loss) per share amounts have been computed by dividing net income (loss) by the weighted-average number of common shares outstanding during the period. For the year ended December 31, 2011, we reported net income, and the computation of diluted earnings per share is based upon the weighted-average number of our common shares and dilutive effect, determined using the treasury stock method, of potential common shares outstanding. As of December 31, 2011, our 98 shares of unvested restricted stock outstanding have non-forfeitable rights to dividends. The allocation of 2011 net income to these participating securities pursuant to the two-class method is not material to both basic and diluted earnings per share. For the years ended December 31, 2010 and 2009, we reported net losses and, therefore, potential common shares were not included since such inclusion would have been anti-dilutive. The calculations of net loss per share, basic and diluted, are as follows:  Net Income (Loss)(Numerator)    Weighted AverageCommon Shares(Denominator)  Per ShareAmount  2011:              Basic$           10,381    33,375  $        0.31    Dilutive effect of stock options-    66        Dilutive effect of restricted stock-    53      Diluted$           10,381    33,494  $        0.31  2010:              Basic and diluted$          (69,725)  32,590  $       (2.14)2009:              Basic and diluted$          (30,612)  31,219  $       (0.98)During 2011, 2010 and 2009, anti-dilutive common shares excluded from diluted per share amounts consist of the following:  2011  2010  2009  WeightedAverageNumberWeightedAverageExercise Price  WeightedAverageNumberWeightedAverageExercise Price  WeightedAverageNumberWeightedAverageExercise PriceOptions4,543$      14.92  5,037$      15.17  4,705$     17.48Restricted stock45    45    34  Total4,588    5,082    4,739  |

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| - Definition
The entire disclosure for earnings per share.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6920599&loc=d3e1252-109256Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=6945512&loc=d3e4984-109258Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 128 -Paragraph 40 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6920599&loc=d3e1278-109256Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688
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