INCOME TAXES - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Effective income tax rate	21.30%	19.50%	19.80%	18.80%
Unrecognized tax benefits with certainty of deductibility but with uncertainty about the timing of deductions	$ 0		$ 0		$ 0
Unrecognized tax benefits	$ 1,800,000		1,800,000		7,100,000
Accrued interest related to unrecognized tax benefits			$ 700,000		$ 40,000.00