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SUPPLEMENTAL UNAUDITED QUARTERLY FINANCIAL INFORMATION OF CONTINUING OPERATIONS (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Quarterly Financial Data [Abstract] |  |  |  |  |  |  |  |  |  |  |
Sales | $ 5,926,000 | $ 3,672,000 | $ 3,691,000 | $ 3,397,000 | $ 3,658,000 | $ 2,651,000 | $ 2,311,000 | $ 1,614,000 | $ 16,686,000 | $ 10,234,000 | $ 8,819,000
Gross profit | 3,523,000 | 2,521,000 | 2,537,000 | 2,212,000 | 2,696,000 | 1,913,000 | 1,572,000 | 777,000 | 10,793,000 | 6,958,000 | 5,116,000
Net income (loss) | $ (3,327,000) | $ (438,000) | $ (2,938,000) | $ (2,791,000) | $ (2,973,000) | $ (2,944,000) | $ (3,867,000) | $ (3,898,000) | $ 64,009,000 | $ (5,062,000) | $ (3,950,000)
Basic income (loss) per common share (in dollars per share) | $ (100) | $ (10) | $ (0.09) | $ (0.08) | $ (90) | $ (90) | $ (130) | $ (130) | $ 1.93 | $ (0.16) | $ (0.14)
Severance and related expense | $ 700,000 |  |  |  | $ 1,500,000 |  |  |  | $ 741,000 | $ 1,524,000 | $ 0

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- Definition Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 + Details
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