INCOME TAXES (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2020
Operating Loss Carryforwards [Line Items]
Income tax benefit recognition threshold more likely than not	50.00%
Income tax expense	$ 12,194	$ 10,693
Cash tax benefit	$ 13,301
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			$ 63,384
Net operating loss carryforwards, valuation allowance			$ 29,183