ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income tax expense (benefit)	$ (14,215,000)	$ (3,985,000)
Accumulated Other Comprehensive (Loss) Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Income tax expense (benefit)	$ 0	$ 0