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Note 9 - Restructuring and Impairment Activities (Details Textual) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Sep. 30, 2019 | Dec. 31, 2019 | Sep. 30, 2019 | Dec. 31, 2019 | Dec. 31, 2018
Gain (Loss) on Disposition of Property Plant Equipment, Total |  |  |  | $ (163) | $ (43)
Inventory Write-down |  |  |  | 3,200 |
Inventory Write-down, Slow Moving Finished Goods [Member] |  |  |  |  |
Inventory Write-down |  |  |  | 2,600 |
Inventory Write-down, Raw Materials Disposed of [Member] |  |  |  |  |
Inventory Write-down |  |  |  | 600 |
Facility Closing, Old Fort [Member] |  |  |  |  |
Restructuring Charges, Total |  |  |  | 1,800 |
Gain (Loss) on Disposition of Property Plant Equipment, Total |  |  |  | 700 |
Inventory Write-downs and Manufacturing Overhead Costs [Member] |  |  |  |  |
Restructuring Charges, Total |  |  |  | 1,300 |
Inventory Write-downs and Manufacturing Overhead Costs [Member] | Cost of Sales [Member] |  |  |  |  |
Restructuring Charges, Total |  |  |  | 1,300 |
Employee Severance and Other Payroll and Benefit Costs [Member] |  |  |  |  |
Restructuring Charges, Total |  |  |  | 700 |
Other Exit and Relocation Costs [Member] |  |  |  |  |
Restructuring Charges, Total |  |  |  | 400 |
Facility Closing, Passaic [Member] |  |  |  |  |
Proceeds from Divestiture of Businesses, Net of Cash Divested, Total | $ 12,400 |  |  |  |
Payments for Divestiture Selling and Closing Costs | $ 900 |  |  |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal |  |  | $ 11,500 | $ 11,497 |

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- Definition Amount before tax of gain (loss) recognized on the sale or disposal of a disposal group. Excludes discontinued operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2443-110228 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230 + Details
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- Definition Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=116847112&loc=d3e4542-108314 + Details
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