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LEASES - Additional Information (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2019
Lessee, Lease, Description [Line Items] |  |
Operating leases, rental expense | $ 37.5 |
Minimum |  |
Lessee, Lease, Description [Line Items] |  |
Operating lease term |  | 1 year
Maximum |  |
Lessee, Lease, Description [Line Items] |  |
Operating lease term |  | 15 years
Buildings |  |
Lessee, Lease, Description [Line Items] |  |
Operating lease term |  | 6 years
Operating lease renewal term |  | 68 months
Vehicles | Minimum |  |
Lessee, Lease, Description [Line Items] |  |
Operating lease term |  | 1 year
Vehicles | Maximum |  |
Lessee, Lease, Description [Line Items] |  |
Operating lease term |  | 7 years
Equipment | Minimum |  |
Lessee, Lease, Description [Line Items] |  |
Operating lease term |  | 1 year
Equipment | Maximum |  |
Lessee, Lease, Description [Line Items] |  |
Operating lease term |  | 6 years

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41499-112717 + Details
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- Details
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