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FAIR VALUE ACCOUNTING (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Assets: |  |
Long term debt | $ 49,500 | $ 49,200
Recurring |  |
Assets: |  |
Investments | 1,885 | 3,131
Recurring | Level 1 |  |
Assets: |  |
Investments | 1,885 | 2,718
Recurring | Level 2 |  |
Assets: |  |
Investments |  | 413
Marketable equity securities. | Recurring |  |
Assets: |  |
Investments | 1,885 | 2,718
Marketable equity securities. | Recurring | Level 1 |  |
Assets: |  |
Investments | $ 1,885 | 2,718
Warrants | Recurring |  |
Assets: |  |
Investments |  | 413
Warrants | Recurring | Level 2 |  |
Assets: |  |
Investments |  | $ 413

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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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