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Supplementary Disclosures of Cash Flow Information (Tables) | 12 Months Ended
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Dec. 31, 2012
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block] |
|  | Years ended December 31, |
|  | 2012 |  |  | 2011 |
Cash paid for: |  |  |  |  |  |
Interest |  | $ | — |  |  | $ | 80,286 |
Income taxes |  |  | 41,169 |  |  |  | 12,393 |

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- Definition Tabular disclosure of supplemental cash flow information for the periods presented. + References No definition available. + Details
Name: | us-gaap_ScheduleOfCashFlowSupplementalDisclosuresTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration