INCOME TAXES - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Tax Credit Carryforward [Line Items]
Deferred tax asset payable to parent	$ 75,700
Operating loss carryforwards not subject to expiration	298,000
Income tax benefit related to net operating losses	28,200
Income tax benefit related to net operating losses recorded as a reduction to goodwill	26,900
Deferred tax assets	251,208	$ 175,654
Less valuation allowance	(71,472)	(58,903)
Unrecognized tax benefits including tax interest accrued	4,100	2,400
Unrecognized Tax Benefits Unrelated To Federal Income Taxes Statute Of Limitations Expiring To Be Recognized In Subsequent Periods That Would Income Impact Tax Expense Continuing Operations	4,000
Income tax provision		2,400
Decrease in unrecognized tax benefits is reasonably possible	1,400
Decrease in unrecognized tax benefits is reasonably possible, amount which would reduce income tax provision	1,200
Deferred tax adjustment for enacted changes in tax law and rates	502	$ (1,431)	$ 33,002
Federal Tax Authority
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	372,200
State and Local Jurisdiction
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	365,800
Operating loss carryforwards not subject to expiration	55,800
Foreign Tax Authority
Tax Credit Carryforward [Line Items]
Operating loss carryforwards not subject to expiration	121,200
Operating loss carryforwards available to offset future income	322,400
Operating loss carryforwards subject to expiration	24,400
Less valuation allowance	(12,600)
Federal and State Tax Credits
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	11,700
Operating loss carryforwards not subject to expiration	600
Operating loss carryforwards subject to expiration	11,000
Deferred tax assets	177,700
Portion of deferred tax assets that will be utilized upon future reversal of deferred tax liabilities	61,800
Portion of deferred tax assets that will be utilized based on forecasts of future taxable income	$ 115,900