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Accounts Receivable (Tables) | 12 Months Ended
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Dec. 31, 2019
Receivables [Abstract] |
Schedule of Accounts, Notes, Loans and Financing Receivable [Text Block] | Accounts receivable, net, consists of the following at December 31:
|  | 2019 |  | 2018
Accounts receivable |  | $ | 8,549,422 |  |  | $ | 9,021,051 |
Allowances for doubtful accounts |  | (66,735 | ) |  | (75,588 | )
Accounts receivable, net |  | $ | 8,482,687 |  |  | $ | 8,945,463 |
The company maintains allowances for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments. The allowances for doubtful accounts are determined using a combination of factors, including the length of time the receivables are outstanding, the current business environment, and historical experience. The company also has notes receivables with certain customers, which are included in “Accounts Receivable, net” in the company's consolidated balance sheets.

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- References No definition available. + Details
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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://fasb.org/us-gaap/role/ref/legacyRef -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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