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Schedule II - Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2019
Notes to Financial Statements |
SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] | Schedule II – Valuation and Qualifying Accounts (in thousands)
|  |  |  |  |  | Additions |  |  |  |  |  |  |  |  |
Description |  | Balance at Beginning of Period |  |  | Charged to Costs and Expenses |  |  | Charged to Other Accounts |  |  | Deductions |  |  | Balance at End of Period |
Year Ended December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 1,385 |  |  | $ | 641 |  |  | $ | - |  |  | $ | (416 | ) |  | $ | 1,610 |
Tax valuation reserve |  | $ | 2,017 |  |  | $ | 362 |  |  | $ | - |  |  | $ | - |  |  | $ | 2,379 |
Year Ended December 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 1,610 |  |  | $ | 575 |  |  | $ | - |  |  | $ | (245 | ) |  | $ | 1,940 |
Tax valuation reserve |  | $ | 2,379 |  |  | $ | - |  |  | $ | - |  |  | $ | (324 | ) |  | $ | 2,055 |
Year Ended December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts |  | $ | 1,940 |  |  | $ | 590 |  |  | $ | - |  |  | $ | (565 | ) |  | $ | 1,965 |
Tax valuation reserve |  | $ | 2,055 |  |  | $ | 160 |  |  | $ | - |  |  | $ | - |  |  | $ | 2,215 |

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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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