INCOME TAXES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Income Taxes
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
Provisions for interest or penalties related to uncertain tax positions	$ 0.0
U.S. statutory rate (as a percent)	35.00%