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TRADING SECURITY (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
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Investments, Debt and Equity Securities [Abstract] |  |
Amortized cost | $ 9,700 | $ 10,100
Trading security, at fair value | $ 11,210 | $ 11,212

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118954083&loc=d3e26610-111562 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118954083&loc=d3e26610-111562 + Details
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