Note 7 - Pension, Post-Retirement and Post-Employment Plans (Details) - Components of Net Periodic Benefit Cost of Postretirement Benefits (Domestic Postretirement Benefit Plan of Foreign Entity [Member], USD $) In Millions, unless otherwise specified	9 Months Ended	12 Months Ended	10 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2014	Oct. 31, 2013	Dec. 31, 2012
Successor [Member]
Net periodic benefit expense:
Service cost		$ 0.1
Interest cost on the projected benefit obligation	0.1	0.3
Net periodic cost (benefit)		0.4
Predecessor [Member]
Net periodic benefit expense:
Service cost			0.1	0.1
Interest cost on the projected benefit obligation	0.1		0.2	0.3
Amortization of prior service cost			(0.1)	(0.1)
Net periodic cost (benefit)	$ 0.1		$ 0.2	$ 0.2