HELD FOR SALE (Details) - USD ($) $ in Thousands		1 Months Ended
	Apr. 28, 2020	May 31, 2020	Mar. 31, 2020	Mar. 30, 2020	Dec. 31, 2019
Assets classified as held for sale:
Cash and cash equivalents			$ 30,869		$ 0
Clear Media Limited | Disposal Group, Held-for-sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage sold				50.91%
Assets classified as held for sale:
Cash and cash equivalents			30,869
Accounts receivable, net			109,460
Property, plant and equipment, net			206,540
Intangible assets, net			15,363
Operating lease right-of-use assets			279,051
Other			37,661
Assets held for sale			678,944
Liabilities classified as held for sale:
Accounts payable and accrued expenses			73,933
Operating lease liabilities			309,161
Other			961
Liabilities held for sale			$ 384,055
Subsequent Event | Clear Media Limited | Disposal Group, Held-for-sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale Clear Media	$ 253,000
Forecast | Subsequent Event | Clear Media Limited | Disposal Group, Held-for-sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale Clear Media		$ 220,000