INCOME TAXES - Income Tax Rate Reconciliation (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Contingency [Line Items]
Pre-tax loss from continuing operations		$ (251,918)	$ (32,853)	$ (94,209)
Computed income taxes at statutory rate		(52,903)	(6,899)	(19,784)
State income taxes, net of federal benefit	[1]	(114)	(820)	(974)
Foreign tax rate differential		404	(300)	(52)
Deferred taxes on investment in foreign subsidiaries		525	18	(7,284)
Non-deductible expenses		518	658	686
Non-deductible compensation		89	559	829
Foreign withholding		1,063	670	1,615
Convertible debt1		2,949	0	(2,865)
Other tax credits		0	0	(1,995)
Deemed repatriation tax		0	0	(1,751)
Goodwill impairment		12,586	0	0
Valuation allowance		32,957	3,682	2,923
Cares Act rate benefit		(7,267)	0	0
Rate change		(551)	684	81
Other	[1]	927	1,312	(8,222)
Total benefit for income tax on continuing operations		$ (14,715)	(436)	$ (31,063)
Adjustments
Income Tax Contingency [Line Items]
State income taxes, net of federal benefit			(1,400)
Other	[1]		$ 1,400

[1] Compared to our previously filed 2018 Annual Report on Form 10-K, $1.4 million was reclassified from “Other” to “State income taxes, net of federal benefit” for the twelve months ended December 31, 2018. Additionally, “Non-deductible compensation”, “Convertible debt “and “Foreign withholding tax” were moved from “Other” to separate line disclosures.