Condensed Consolidated Statements of Cash Flows (Unaudited) (Parentheticals) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Capital expenditures, discontinued operations			$ 0.8	$ 1.6
Restricted cash	$ 1.0	$ 8.7	1.0	8.7	$ 8.7
Restricted cash, current	0.0	7.7	0.0	7.7	7.7
Restricted cash, noncurrent	1.0	1.0	1.0	1.0	$ 1.0
Held-for-sale
Depreciation expense, discontinued operations	0.4	0.4	1.3	1.2
Amortization expense	$ 0.6	$ 0.7	$ 1.8	$ 2.2