INCOME TAXES - Reconciliation of the Provision for Income Taxes using Statutory Federal Income Tax Rate to the Effective Income Tax Rate (Details)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Federal statutory rate	35.00%	35.00%	35.00%
State income taxes, net of federal benefit	2.60%	2.70%	2.80%
Tax Act impact	(1.70%)	0.00%	0.00%
Section 199 deduction	(2.80%)	(0.00%)	(0.00%)
ASU 2016-09 adoption	(1.90%)	(0.00%)	(0.00%)
Other	(0.50%)	(0.90%)	0.30%
Effective income tax rate	30.70%	36.80%	38.10%