INCOME TAXES (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2019
Operating Loss Carryforwards [Line Items]
Income tax benefit recognition threshold more likely than not			50.00%
Income tax expense	$ 53,472	$ 40,663	$ 111,764	$ 75,805
Forecast [Member]
Operating Loss Carryforwards [Line Items]
State net operating loss carryforwards					$ 67,064
Net operating loss carryforwards, valuation allowance					29,678
Alabama [Member] | State [Member] | Earliest Tax Year [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards expiration year			2023
Alabama [Member] | State [Member] | Latest Tax Year [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards expiration year			2032
Alabama [Member] | Forecast [Member]
Operating Loss Carryforwards [Line Items]
State net operating loss carryforwards					64,619
Net operating loss carryforwards, valuation allowance					$ 29,183