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Accounts Receivable (Tables) | 12 Months Ended
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Dec. 31, 2012
Receivables [Abstract] |
Schedule of Accounts, Notes, Loans and Financing Receivable [Text Block] | Accounts receivable, net, consists of the following at December 31:
|  | 2012 |  | 2011
Accounts receivable |  | $ | 4,978,136 |  |  | $ | 4,530,242 |
Allowances for doubtful accounts |  | (54,238 | ) |  | (48,125 | )
Accounts receivable, net |  | $ | 4,923,898 |  |  | $ | 4,482,117 |

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- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3, 4 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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