INCOME TAXES - NARRATIVE (Details) - USD ($) $ in Thousands		12 Months Ended
	Dec. 22, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Tax Credit Carryforward [Line Items]
Deferred tax asset for net operating losses		$ 32,702	$ 0	$ 0
Income tax payable			7,700	100
Operating loss carryforwards not subject to expiration		286,100
Income tax benefit related NOL		103,800
Tax benefit recorded as a reduction to goodwill		74,000
Deferred tax assets		192,066	31,775
Valuation allowance		61,563	14,180
Unrecognized tax benefits including tax interest accrued		1,500	600
Income tax provision		1,500	600
Income tax expense related to TCJA	$ 33,000
Restatement Adjustment | Accounting Standards Update 2016-09
Tax Credit Carryforward [Line Items]
Deferred tax asset for net operating losses		35,800	$ 7,700	$ 100
Federal Tax Authority
Tax Credit Carryforward [Line Items]
Operating loss carryforwards		317,500
State and Local Jurisdiction
Tax Credit Carryforward [Line Items]
Operating loss carryforwards		378,600
Operating loss carryforwards not subject to expiration		121,100
Foreign Tax Authority
Tax Credit Carryforward [Line Items]
Operating loss carryforwards not subject to expiration		116,000
Operating loss carryforwards available to offset future income		298,400
Operating loss carryforwards subject to expiration		12,300
Valuation allowance		47,400
Federal and State Tax Credits
Tax Credit Carryforward [Line Items]
Operating loss carryforwards		3,400
Operating loss carryforwards not subject to expiration		600
Operating loss carryforwards subject to expiration		2,800
Deferred tax assets		$ 84,400