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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Gain on Litigation Settlement (Details) - USD ($) | 3 Months Ended | 6 Months Ended
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Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Accounting Policies [Abstract] |  |  |  |
Gain (loss) on litigation settlement | $ 6,286,000 | $ 0 | $ 6,286,000 | $ 0
Cash received from gain on litigation settlement | 4,000,000.0 |  |  |
Cash receivable from gain on litigation settlement | 937,000 |  |  |
Liabilities waived due to litigation settlement | $ 1,400,000 |  |  |

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- Definition Gain (Loss) Related To Litigation Settlement, Liability Waived + References No definition available. + Details
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- Definition Gain (Loss) Related To Litigation Settlement, Receivable + References No definition available. + Details
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- References No definition available. + Details
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- Definition Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349 + Details
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- Definition Cash received for the settlement of litigation during the current period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585 + Details
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