INCOME TAXES - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating Loss Carryforwards [Line Items]
U.S. net tax operating loss carryforward	$ 907.5
U.S. net tax operating loss carryforward recorded to equity when utilized to reduce taxes payable	77.2
Alternative minimum tax credit carryforward	6.0
Unrecognized tax benefits that would impact the entity's effective rate	0.0	$ 0.0
Provisions for interest or penalties related to uncertain tax positions	$ 0.0	$ 0.0
U.S. statutory rate (as a percent)	35.00%	35.00%	35.00%
State [Member]
Operating Loss Carryforwards [Line Items]
Valuation allowance against net operating losses	$ 51.0
Total valuation allowance on net operating losses	$ 70.1