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SUMMARIZED QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables) | 12 Months Ended
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Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract] |
Summarized quarterly financial data |
|  | 2016 |  |  | 2015 |
|  | First Quarter |  |  | Second Quarter |  |  | Third Quarter |  |  | Fourth Quarter |  |  | First Quarter |  |  | Second Quarter |  |  | Third Quarter |  |  | Fourth Quarter |
Revenue |  | $ | 2,078,000 |  |  |  | 2,462,000 |  |  |  | 2,223,000 |  |  |  | 3,049,000 |  |  | $ | 2,264,000 |  |  |  | 2,104,000 |  |  |  | 2,536,000 |  |  |  | 2,832,000 |
Net income (loss) |  | $ | (501,000 | ) |  |  | (728,000 | ) |  |  | (1,140,000 | ) |  |  | (3,209,000 | )(b) |  | $ | (1,534,000 | ) |  |  | (407,000 | ) |  |  | (728,000 | ) |  |  | (200,000 | )(a)
Net income (loss) per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Continuing operations |  | $ | (.02 | ) |  |  | (.03 | ) |  |  | (.05 | ) |  |  | (.15 | ) |  | $ | (.07 | ) |  |  | (.02 | ) |  |  | (.04 | ) |  |  | (.00 | )
Discontinued operations |  | $ | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  | $ | — |  |  |  | — |  |  |  | .01 |  |  |  | (.01 | )
Basic and diluted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| (a) | Includes $448,000 loss ($0.02 per share) related to disposal of investment in former affiliate.
| (b) | Includes $825,000 loss ($0.04 per share) related to the arbitration settlement and $2,206,000 ($0.10 per share) of expenses related to the change in ownership.

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=68076893&loc=d3e1280-108306 + Details
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