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Equity Plan (Tables) | 12 Months Ended
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Dec. 31, 2012
Statement of Stockholders' Equity [Abstract] |
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block] | The number of remaining shares authorized to be issued under the various equity plans are as follows:
|  | 2003 Equity Plan |  | 2009 Equity Plan
Shares Authorized for Issuance |  | 2,500,000 |  |  | 33,950,000 |
Outstanding Stock Options |  | (1,390,300 | ) |  | (20,296,380 | )
Exercised Stock Options |  | (92,500 | ) |  | (5,000 | )
Restricted stock or equity grants issued under Equity Plans |  | (889,939 | ) |  | (4,606,482 | )
Total common shares remaining to be issued under the Equity Plans |  | 127,261 |  |  | 9,042,138 |

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- Definition Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 718 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (h)(1) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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