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LITIGATION - Additional Information (Details) $ in Millions | Sep. 26, 2017 defendant | Sep. 05, 2017 USD ($) | Jun. 30, 2018 USD ($)
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Loss Contingencies [Line Items] |  |  |
Accrued litigation expense |  |  | $ 1.1
Shareholder Derivative Action |  |  |
Loss Contingencies [Line Items] |  |  |
Number of defendants | defendant | 4 |  |
Jeffrey Seabold Matter |  |  |
Loss Contingencies [Line Items] |  |  |
Damages sought |  | $ 5.0 |

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- Definition The value (monetary amount) of the award the plaintiff seeks in the legal matter. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14557-108349 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14435-108349 Reference 3: 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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