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v3.22.1

Schedule II Valuation and Qualifying Accounts (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Valuation Allowances and Reserves, Bad Debt Expense and Reserve for Obsolete Inventory [Table Text Block] |
|  | 2021 |  |  | 2020 |
Bad debt expense |  |  | (28,499 | ) |  |  | 320,270 |
Reserve for obsolete inventory |  |  | 162,651 |  |  |  | 266,021 |
Valuation Allowances and Reserves [Table Text Block] |
|  | Balance Beginning of Year |  |  | Charges to Costs and Expenses |  |  | Deductions (1) |  |  | Balance End of Year |
Year Ended December 31, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for inventory obsolescence |  | $ | 723,949 |  |  | $ | 162,651 |  |  | $ | (618,129 | ) |  | $ | 268,470 |
Allowance for doubtful accounts |  |  | 498,044 |  |  |  | (28,499 | ) |  |  | (60,469 | ) |  |  | 409,076 |
Totals |  | $ | 1,221,993 |  |  | $ | 134,152 |  |  | $ | (678,598 | ) |  | $ | 677,546 |
Year Ended December 31, 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for inventory obsolescence |  | $ | 665,308 |  |  | $ | 266,021 |  |  | $ | (207,380 | ) |  | $ | 723,949 |
Allowance for doubtful accounts |  |  | 612,434 |  |  |  | 320,270 |  |  |  | (434,660 | ) |  |  | 498,044 |
Totals |  | $ | 1,277,742 |  |  | $ | 586,291 |  |  | $ | (642,040 | ) |  | $ | 1,221,993 |
Valuation and Qualifying Accounts, Allowance for Credit Loss [Table Text Block] |
|  | 2021 |  |  | 2020 |
Allowance for doubtful accounts at the beginning of the period |  | $ | 498,044 |  |  | $ | 612,434 |
Bad debt expense |  |  | (28,499 | ) |  |  | 320,270 |
Receivables written off during the periods |  |  | (24,415 | ) |  |  | (484,265 | )
Effect of currency translation |  |  | (36,054 | ) |  |  | 49,605 |
Allowance for doubtful accounts at the end of the period |  | $ | 409,076 |  |  | $ | 498,044 |

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