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Consolidated Statements of Stockholders' Equity (USD $) In Thousands, except Share data | Common Stock [Member] | Additional Paid-in Capital [Member] | Retained Earnings [Member] | Total
--- | --- | --- | --- | ---
Balance at Dec. 31, 2008 | $ 125 | $ 263,533 | $ (251,252) | $ 12,406
Balance (in Shares) at Dec. 31, 2008 | 12,453,210 |  |  |
Issurance of shares pursuant to stock awards | 1 |  |  | 1
Issurance of shares pursuant to stock awards (in Shares) | 147,026 |  |  |
Issuance of shares pursuant to warrant exercises, Private Placement, and shelf takedown | 8 | 8,827 |  | 8,835
Issuance of shares pursuant to warrant exercises, Private Placement, and shelf takedown (in Shares) | 841,449 |  |  |
Issuance of common stock for services | 1 | 499 |  | 500
Issuance of common stock for services (in Shares) | 59,312 |  |  |
Convertible term loan conversion option |  | 1,617 |  | 1,617
Stock compensation expense |  | 2,273 |  | 2,273
Net loss |  |  | (14,399) | (14,399)
Balance at Dec. 31, 2009 | 135 | 276,749 | (265,651) | 11,233
Balance (in Shares) at Dec. 31, 2009 | 13,500,997 |  |  |
Issurance of shares pursuant to stock awards | 2 |  |  | 2
Issurance of shares pursuant to stock awards (in Shares) | 176,775 |  |  |
Convertible term loan conversion option |  | 1,603 |  | 1,603
Stock compensation expense |  | 4,007 |  | 4,007
Net loss |  |  | (15,899) | (15,899)
Balance at Dec. 31, 2010 | 137 | 282,359 | (281,550) | 946
Balance (in Shares) at Dec. 31, 2010 | 13,677,772 |  |  |
Issurance of shares pursuant to stock awards | 1 |  |  | 1
Issurance of shares pursuant to stock awards (in Shares) | 151,466 |  |  |
Issuance of shares pursuant to warrant exercises, Private Placement, and shelf takedown | 16 | 15,113 |  | 15,129
Issuance of shares pursuant to warrant exercises, Private Placement, and shelf takedown (in Shares) | 1,600,303 |  |  |
Convertible term loan conversion option |  | 343 |  | 343
Stock compensation expense |  | 2,348 |  | 2,348
Net loss |  |  | (16,837) | (16,837)
Balance at Dec. 31, 2011 | $ 154 | $ 300,163 | $ (298,387) | $ 1,930
Balance (in Shares) at Dec. 31, 2011 | 15,429,541 |  |  |

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