CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue
Revenue	$ 150.8	$ 221.6
Revenue from related parties	0.7	0.9
Total revenue	151.5	222.5
Operating expenses
Costs of revenue (excluding depreciation of $20.5 and $20.4, respectively, included in depreciation and amortization below)	115.2	163.1
Selling, general and administrative	17.7	23.6
Depreciation and amortization	21.4	22.4
Impairments and other charges	3.7	60.8
Gain on disposal of assets, net	(0.1)	0.3
Total operating expenses	157.9	270.2
Operating loss	(6.4)	(47.7)
Interest expense, net	(7.3)	(8.2)
Gain on extinguishment of debt, net	2.0	0.5
Equity in net income of joint venture affiliate		0.6
Loss before income taxes	(11.7)	(54.8)
Income tax expense		0.2
Net loss	(11.7)	(55.0)
Net loss used for basic and diluted EPS computations	$ (11.7)	$ (55.0)
Basic and diluted loss per share	$ (0.11)	$ (0.50)
Shares used in computing basic and diluted loss per share	107.3	109.7