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BASIS OF PRESENTATION - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended
	May 31, 2018	Jun. 30, 2019	Jan. 01, 2019
New Accounting Pronouncement, Early Adoption [Line Items]
Lease liabilities		$ 107,645
ROU assets		$ 97,783
Accounting Standards Update 2016-02
New Accounting Pronouncement, Early Adoption [Line Items]
Lease liabilities			$ 76,400
ROU assets			$ 67,300
Public Offering
New Accounting Pronouncement, Early Adoption [Line Items]
Stock issued during the period (in shares)	6,000,000.0
Stock issued during the period, value	$ 349,600

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Present value of lessee's discounted obligation for lease payments from operating lease.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

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