INCOME TAXES (Textuals) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Operating Loss Carryforwards [Line Items]
Operating loss carryforward, amount expected to be utilized on an annual basis	$ 6.9
Domestic Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	180.1	$ 208.2
Operating loss carryforward, amount expected to be utilized on an annual basis	21.5
Tax basis bad debt reserves for which no income tax liability has been booked	5.4	5.4
Unrecognized deferred tax liability related to bad debt reserves	1.1
Domestic Tax Authority [Member] | General Business Tax Credit Carryforward [Member]
Operating Loss Carryforwards [Line Items]
Federal and state tax credit carryforwards	3.4	3.4
Domestic Tax Authority [Member] | Alternative Minimum Tax Credit Carryforward [Member]
Operating Loss Carryforwards [Line Items]
Federal and state tax credit carryforwards	4.2	4.2
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	86.8	$ 94.6
Operating loss carryforwards, valuation allowance	0.2
Operating loss carryforward, amount expected to be utilized on an annual basis, valuation allowance	$ 0.2